89 results about "Battery pack" patented technology

The present invention relates to one kind of battery loading and unloading bogie for electromobile and its track type battery tray and built-in battery tray, and belongs to the field of electromobile technology. The battery loading and unloading bogie has elevating track upright in the front end, fast battery unloading mechanical arm on the upright and main elevating mechanism to shift the mechanical arm. The mechanical arm is provided with longitudinal bearing arm possessing special interface for fitting the battery tray, horizontal longitudinal push mechanism under the longitudinal bearing arm, and horizontal transverse telescopic cross bearing arm pushed with the longitudinal push mechanism and possessing battery hoisting part. The present invention has the advantages of convenient battery loading and unloading.

The invention discloses a power battery thermal management system with functions of efficient heat dissipation and efficient heating. The power battery thermal management system comprises a power battery case and a thermal management system, wherein a plurality of battery monomers are adjacently aligned to form a battery pack placed inside a battery case housing, a composite phase change material plate is sandwiched between the gap of the adjacent batteries and the surface of the outermost side battery in the battery pack width direction, the composite phase change material plates and thermal pipes are combined to form composite phase change material thermal pipe coupling components, the composite phase change material thermal pipe coupling components are additionally arranged on both sides of the battery pack, the thermal pipes extends from the through holes on the battery module housing, the extending ends are connected to heating devices and heat dissipation fans, and a programmable automatic temperature regulator treats the signal from a temperature sensor by programming so as to determine whether the fans and the heating devices are started. The power battery thermal management system of the present invention has advantages of simple and firm whole structure, high efficiency, stable operating, and the like. In addition, the battery pack can be subjected to direct, unified and uniform cooling and heating, such that the battery can work at the appropriate temperature range, and the electric vehicle battery thermal management system is improved.

A press apparatus for assembly of a battery pack includes a tooling table having an aperture formed therein. The tooling table includes a plurality of index pawls disposed adjacent the aperture. The index pawls militate against the components passing upwardly through the aperture after the components have passed downwardly through the aperture. A first press is disposed on a first side of the tooling table and configured to advance the components downwardly through the aperture and past the index pawls on the tooling table. A second press is disposed on a second side of the tooling table. The second press is configured to retract a distance that the components are pressed downwardly through the aperture and maintain a substantially constant upward force on the components. A third press is disposed on the first side of the tooling table and configured to compress the battery pack to a desired size and load.

The present invention relates to an electric car which has a battery pack at a constant state of maximum power discharge and to a method of efficiently controlling a motor with due consideration for rechargeable power levels. The control method according to one embodiment of the present invention, comprises the steps of: calculating estimated power levels required, based on current power consumption levels, for providing current from the battery pack to all parts of an electric car, and the required torque according to a driver's activation of the accelerator; comparing the estimated power levels required with the maximum possible power discharge from the battery pack; and enabling maximum possible torque from the motor when the estimated power levels required exceeds the current maximum possible power discharge from the battery pack.

The invention relates to the field of lithium ion battery designs, and discloses a lithium ion battery pack and a soldering method for single batteries therein. The lithium ion battery pack comprises a plurality of single batteries which are connected in series or in parallel through soldered lugs; and the soldering method for soldering the first lug and the second lug of any two single batteries includes the following steps: a rigid plate is arranged on the backs of the horizontal bent sections of the first lug and the second lug, and is in plane contact with the backs of both the first lug and the second lug, wherein a predetermined gap is reserved between the first lug and the second lug which are horizontally opposite to each other; soldering is carried out on the top of the rigid plate in the gap between the first lug and the second lug, a tin bar is melted, the gap is covered by and filled with the melted tin, and the melted tin permeates to the top of the rigid plate; and the melted tin is solidified and shaped. The heat-dissipating effect of the method is better, and moreover, the structure of the soldered parts of the lugs is firmer, which can help to enhance the conductivity of the lithium ion battery pack.

The invention provides a thermal runaway control system for a lithium ion battery pack of a new energy automobile, and the battery pack. The control system comprises a water pump, a water tank and at least two groups of battery packs; each battery pack is matched with a three-way valve which is controlled and gated by a BMS; each battery pack liquid cooling plate is provided with a discharging valve which also can be controlled to be opened by the BMS; and a floating pipeline, which can be lowered along with a liquid surface and is connected with inlet water and outlet water of the water tank, is arranged in the water tank. By means of controlling the flow of the water pump and the flowing direction of an anti-freezing solution, the battery pack in thermal runaway can be full by the anti-freezing solution within 10s; when battery pack thermal runaway occurs in certain several packs, the liquid cooling plate valve in the battery pack in thermal runaway is controlled to be opened, and meanwhile, the three-way valves of other packs are controlled to be connected with the water tank; and therefore, spreading of heat to other battery packs can be blocked by means of controlling the thermal runway of a single battery pack or a few battery packs.

A tearable low adhesive sheet (29) is attached to a battery pack (19). This low adhesive sheet (29) is bonded with a double-sided adhesive tape (31) to a bottom face (17a) of a battery accommodating part (17) shaped into a recess and provided to a front cabinet (7) included in a casing (3), so that the battery pack (19) is secured to the battery accommodating part (17).

The invention discloses a heating circuit of a battery. The heating circuit comprises a temperature sensor, a battery management device and a charging circuit. The temperature sensor is mounted in a battery pack; the temperature sensor detects the real-time temperature of the battery pack and sends a temperature signal. The battery management device is connected with the temperature sensor; the battery management device receives the temperature signal sent by the temperature sensor. The charging circuit is connected with the battery management device, wherein the battery management device compares the temperature signal with a critical temperature; when the temperature signal is lower than or equal to the critical temperature, the battery management device controls the charging circuit towork in a high-frequency heating mode and the charging circuit heats the battery pack; when the temperature signal is higher than the critical temperature, the battery management device controls the charging circuit to work in a charging mode and the charging circuit charges the battery pack. The heating circuit of the battery is used for realizing heating the battery through the high-frequency charging and discharging to the battery by utilizing the properties that the battery is high in internal resistance at a low temperature and generates much heat, and the influence cannot be generated tothe safety of the battery by high-frequency alternating-current charging and heating.

The invention provides a battery pack charging method, wherein a battery pack comprises a plurality of battery monomers or modules. The battery pack charging method comprises the following steps of: carrying out constant-current charging on the battery pack; and carrying out monomer voltage closed loop feedback charging on the battery pack. According to the battery charging method provided by the invention, on the condition of high safety, the battery pack is most rapidly charged.

The invention relates to a portable rechargeable direct-current electric welding machine. A battery pack is connected to the outside of a shell and comprises a positive main wire, a positive sub-wire, a negative main wire and a negative sub-wire, wherein the positive main wire of the battery pack is connected with a weld handle connection terminal; the weld handle connection terminal is connected with a switch; the switch is connected with a voltage stabilizer; the voltage stabilizer is connected with a control panel; the control panel is connected with the voltage regulator; the voltage regulator is connected with the current regulator; the current regulator is connected with a contactor; the contactor is connected with a welding voltage meter; the welding voltage meter is connected with a welding current meter; the welding current meter is connected with the weld handle; the negative main wire of the battery pack is connected with a ground wire terminal; and the negative sub-wire of the battery pack is connected with the voltage stabilizer, the control panel, the voltage regulator, the current regulator, the contactor, the welding voltage meter and the welding current meter respectively. The portable rechargeable direct-current electric welding machine has low cost, is convenient to assemble, disassemble and carry, is not limited by a power supply, can work anytime and anywhere.

The invention discloses a temperature pre-regulation system and method of a power battery pack and a thermal management system control method, and relates to the technical field of power batteries. The temperature pre-regulation control system comprises a battery pack, a thermal management system, an automobile electricity utilization load and a control system, wherein the control system comprisesa controller, an acquisition module and an instruction module; the acquisition module acquires battery pack parameter information, compares the battery pack parameter information with a preset parameter value in the controller, and controls the automobile electricity utilization load and the thermal management system through the instruction module to realize battery pack temperature pre-regulation. According to the invention, the battery pack can work in a relatively large temperature range, responses can be made in time for various problems of the battery pack, and especially when the discharge current is relatively large and the temperature rise of the battery is delayed, the flow of the cooling liquid is pre-adjusted, so that the uncontrollable condition of the battery is avoided; andmeanwhile, the controller has the functions of continuously learning and optimizing control parameters, and can carry out continuous adjustment according to the driving habit of a driver and the gradual aging of the battery.

The invention discloses a battery pack active equalization method and a battery pack active equalization device. The battery pack active equalization device is composed of an intelligent control unit, a BMS communication unit, a differential-amplification pressure difference detection unit, and an electric energy transfer unit. The BMS communication unit acquires the current value and ampere hour from a BMS. The differential-amplification pressure difference detection unit detects the voltage of batteries one by one through a differential amplifier and sends the detection values to the intelligent control unit. The electric energy transfer unit is used for transferring energy from a battery cell to a battery cell, from a battery cell to a battery module or from a battery cell to a battery pack. The intelligent control unit receives the current value and ampere hour information acquired by the BMS communication unit and the test values of the differential-amplification pressure difference detection unit, and makes operational analysis according to the received current value and ampere hour information acquired by the BMS communication unit and the test values of the differential-amplification pressure difference detection unit so as to make the electric energy transfer unit transfer the energy of battery cells. The method and the device of the invention have the characteristics of high equalization efficiency, accurate equalization current flow and high cost performance.

The invention discloses a multichannel battery sampling circuit and a sampling method thereof. The multichannel battery sampling circuit includes a battery pack, a channel switch unit, a battery voltage difference processing unit, a channel switch control unit, a micro-processing unit and a switch control circuit, wherein the battery pack is connected with an input end of the channel switch unit; an output end of the channel switch unit is connected with the battery voltage difference processing unit; an output end of the battery voltage difference processing unit is connected with the micro-processing unit; and an output end of the micro-processing unit is connected with the channel switch unit through the channel switch control unit. By adopting the structure, the invention has the advantages that, firstly, as the battery voltage sampling channels can be switched according to the logic control signals issued by the mirco-processing unit, the sampling method can improve the battery voltage detection precision and avoid the big power consumption during system hibernation; secondly, the system performance is improved; and thirdly, the system structure is optimized, and the reliability, the flexibility and the performance price ratio of the system are improved.

An electric vehicle three-system integrated test platform belongs to the field of electric vehicles. The electric vehicle three-system integrated test platform is composed of a battery and battery management system, a motor and motor control system, and an industrial personal computer. The battery and battery management system comprises a battery cooling/heating system, a battery management system, and a battery pack. The motor and motor control system comprises a current sensor, a voltage sensor, a motor, a speed/torque sensor, an inertia disc, a dynamometer, a motor controller, and a tension controller. The battery cooling/heating system makes the batteries work within an optimal temperature range. Through the battery management system, the voltage and current of the battery can be monitored, and functions like battery equalization can be achieved. Through the motor and motor control system, the performance and properties of the motor under various conditions can be tested and analyzed. A finished vehicle control system simulates different driving conditions of an electric vehicle so as to test and optimize the regenerative braking control effect.

The invention discloses a method for detecting an inner connecting resistor of a power battery pack. The method includes the following steps that (1) the alternating current inner resistance Zi of each battery cell is tested before battery modules are assembled; (2) the alternating current inner resistance Zm of each battery module is tested after the battery modules are assembled and before the battery pack is assembled, and the inner connecting resistor comprehensive value Rci of each battery module is calculated through the Zi and the Zm; (3) constant-current discharge is conducted on the power battery pack, the direct current resistance Di of each battery module and the direct current resistance Dp of the battery pack are calculated, and the connecting resistor comprehensive value Rco between the modules is calculated through the Di and the Dp; (4) the inner connecting resistor comprehensive value Rc of the battery pack is calculated through the formula Rc=Rci+Rco; (5) the inner connecting resistor of the power battery pack is evaluated through the Rc. According to the method for detecting the inner connecting resistor of the power battery pack, the structure of the battery pack does not need to be damaged, the Rc can be calculated effectively and conveniently, and therefore support is provided for the connecting resistor design of the battery pack and the electrical property and health condition judgment.

A method and apparatus for evaluating CEW performance, in particular by evaluating a battery pack condition state via direct or indirect means. A two-tier load test for a CEW battery pack and an indirect wireless spark analysis tool are disclosed.

Power control systems and methods are provided to control when and how power is removed from devices. A power control system includes a sensing module that detects an output voltage level of a battery pack. A shutoff module initiates a shutoff routine when the output voltage level decreases to a device shutoff voltage level. The device shutoff voltage level is greater than the battery pack shutoff voltage level. A bypass module prevents the initiation of the shutoff routine when the device performs one or more operations that are known to cause high battery current spikes that will resultant in significant voltage drops from the battery pack.

The invention relates to the field of energy storage devices, in particular to a battery pack. The battery pack comprises batteries, a lower box body, a fan, cooling plates and an air duct baffle plate, wherein the lower box body comprises a battery chamber, a bottom groove and a side opening; the batteries are arranged in the battery chamber; the bottom groove is located in the bottom part of the battery chamber and is separated from the battery chamber through a bottom plate of the battery chamber; the bottom plate is made of a heat-conducting material; the bottom groove extends to one side of the battery chamber; the side opening is located at the side part of the battery chamber and communicates with the bottom groove; the cooling plates are arranged in the bottom groove; and the air duct baffle plate covers the bottom part of the bottom groove; and the fan is arranged at the outer side of the side opening. According to the battery pack provided by the invention, moisture or dust can be effectively prevented from entering to cause a short circuit during the cooling process, so that the IP protection grade of the battery pack is ensured.

The invention discloses an air tightness detection device and an air tightness detection method. The air tightness detection device provides special equipment for detecting the air tightness of a battery pack PACK upper cover, a workpiece sealing mold is arranged to form a sealable cavity with the battery pack PACK upper cover, and the position precision of the workpiece sealing mold is ensured through a positioning structure. An edge sealing mechanism and an anti-deformation mechanism are combined to guarantee the sealing performance and prevent the battery pack PACK upper cover from deforming during detection, so that reliable conditions are created for airtightness detection, airtightness detection of the battery pack PACK upper cover can be effectively carried out, and a basic guarantee is provided for improving the airtightness of the battery pack.

The invention discloses a method, device and equipment for predicting overlarge differential pressure of a battery pack, and the method comprises the steps of determining a single battery cell with apotential problem in the battery pack; acquiring voltage sampling data of a battery pack of a single battery cell with a potential problem; when the voltage sampling data is located in the same temperature interval and the same battery remaining capacity interval, calculating the maximum slope under two adjacent groups of voltage sampling data of the battery pack; judging whether the maximum slopeexceeds a preset slope threshold value or not, and when the maximum slope exceeds the preset threshold value, judging that the voltage difference of the battery pack is too large. The method achievesthe prediction of the overlarge differential pressure of the battery pack, can take corresponding measures in advance when the overlarge differential pressure of the battery pack is predicted, and prevents the overlarge differential pressure of the battery pack from affecting the energy of the battery pack.

The invention discloses an electric automobile battery pack fixing device. The electric automobile battery pack fixing device comprises a shell and a supporting plate arranged in the shell and used for supporting a battery pack, wherein a clamping mechanism capable of movably clamping and positioning the battery pack is arranged in the shell, the clamping mechanism comprises a pair of inner clamping plates oppositely arranged and used for positioning the battery pack, an outer clamping plate is arranged on the outer side of each inner clamping plate, a vibration reducing positioning mechanismis arranged between the inner clamping plates and the outer clamping plates, and a driving structure for driving the pair of outer clamping plates to move relatively is arranged in the shell. The battery pack can be quickly and effectively fixed and released, the operation is simple, and the battery pack replacement efficiency can be effectively improved, so that the problem of poor cruising ability of an electric vehicle is effectively solved, meanwhile, the vibration reducing positioning mechanism plays a better role in buffer and vibration reduction on the battery pack, so that the batterypack is well protected, and the service life of the battery pack is prolonged.

The invention discloses a real-time testing and wireless transmission device and method for a sucker-rod pump indicator diagram of a pumping well. The real-time testing and wireless transmission device comprises a battery pack, a magnetic acoustic energy converter, a system power supply, a displacement sensor, a circuit board, a load sensor, a shell and a ground controller, wherein the battery pack, the magnetic acoustic energy converter, the system power supply, the displacement sensor, the circuit board and the load sensor are arranged in the shell, the ground controller is arranged on the ground of the pumping well and is close to a wellhead, the battery pack is electrically connected with the system power supply, the system power supply is electrically connected with the displacement sensor and the load sensor, the displacement sensor and the load sensor are respectively connected with the circuit board, the circuit board is electrically connected with the magnetic acoustic energy converter, and the magnetic acoustic energy converter is in wireless connection with the ground controller.