CN107453446B - Battery equalization repair system and method - Google Patents
Battery equalization repair system and method Download PDFInfo
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- CN107453446B CN107453446B CN201710833553.9A CN201710833553A CN107453446B CN 107453446 B CN107453446 B CN 107453446B CN 201710833553 A CN201710833553 A CN 201710833553A CN 107453446 B CN107453446 B CN 107453446B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
A battery equalization repair system comprises a control device, a battery repair module, a battery state monitoring module and a battery charging and discharging device; the battery state monitoring module is used for acquiring the voltages of all the single batteries in the battery pack and transmitting the voltage information of all the single batteries to the control device; the control device is used for calculating the average value of the battery pack voltage according to all the single battery voltages, and when the difference value between a certain battery voltage and the average value exceeds a preset threshold value, the control device sends a repair instruction to the battery repair module; the battery repair module is used for charging and discharging the single battery according to the repair instruction sent by the control device and stopping the charging and discharging operation of the single battery according to the stop instruction sent by the control device; the battery charging and discharging device consists of a charging module, a discharging module and a charging and discharging multiplying power adjusting module. The invention can effectively repair the difference between batteries, and improves the performance, the safety performance and the cycle life of the battery pack.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery equalization repairing system and method.
Background
The battery is used as a power source, and the performance of the battery pack and whether maintenance measures are proper are important factors for directly determining the service life and the use safety of the battery pack. The batteries are generally used in series-parallel to meet the requirements of voltage and energy storage capacity, and due to the fact that the internal structure, the working environment and the like of the batteries are different, after the battery pack is used for a period of time, state differences among the single batteries are gradually revealed, the single batteries are caused to be undercharged, overcharged and overdischarged, the performance and the service life of the battery pack are affected, and potential safety hazards exist.
In order to improve the difference between batteries, the batteries are generally subjected to equalization treatment, the battery equalization technology can improve the difference between the batteries, the existing battery equalization treatment technology mostly adopts an online equalization mode, and equalization parameters are usually smaller and equalization effects are very limited due to the limitation of factors such as cost, volume and weight. In addition, along with the improvement of the battery production process, the consistency of the battery is better, and in the use process, the battery is required to be balanced when the difference of the battery reaches a certain value. However, the existing battery equalization processing technology is not improved and improved, and the requirements on the performance and service life of the battery pack are not met.
In view of the foregoing, it is desirable to provide a system and method for battery equalization repair.
Disclosure of Invention
The invention aims to provide a battery balance repair system which can effectively repair the difference between batteries, improve the safety performance of a battery pack and prolong the service life of the battery pack.
The invention also provides a battery equalization repairing method.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a battery equalization repair system comprises a control device, a battery repair module, a battery state monitoring module and a battery charging and discharging device;
the input end of the battery state monitoring module is connected with the junction of the single battery, the output end of the battery state monitoring module is connected with the input end of the control device, the input end of the battery repairing module is connected with the output end of the control device, and the output end of the battery repairing module is connected with the junction of the single battery;
the battery state monitoring module is used for acquiring the voltages of all the single batteries in the battery pack and transmitting the voltage information of all the single batteries to the control device;
the control device is used for calculating the average value of the battery pack voltage according to all the single battery voltages, sending a repairing instruction to the battery repairing module when the difference value between a certain battery voltage and the average value exceeds a preset threshold value, and sending a stopping instruction to the battery repairing module when the difference value between the certain battery voltage and the average value is lower than the preset threshold value;
the battery repair module is used for carrying out balanced charge and discharge on the single battery according to the repair instruction sent by the control device and stopping balanced charge and discharge operation on the single battery according to the stop instruction sent by the control device;
the battery charging and discharging device is used for charging and discharging the battery and consists of a charging module, a discharging module and a charging and discharging multiplying power adjusting module; the charge-discharge multiplying power of the charge-discharge multiplying power regulating module is provided with three grades, namely 0.2C, 0.5C and 1C, and the balance current of the battery repairing module is 0.25 times of the charge-discharge current multiplying power of the battery charge-discharge device, when a charge-discharge repairing mode is started, the battery charge-discharge device automatically sets the current multiplying power, the battery is charged and discharged by adopting the 0.2C charge-discharge multiplying power first, after one charge-discharge operation, the current multiplying power is regulated to 0.5C, the second charge-discharge is carried out, and then the current multiplying power is regulated to 1C, and the third charge-discharge is carried out, so that the cycle is carried out until the charge-discharge repairing mode is completed.
According to the invention, the batteries are repaired periodically or when the capacity difference between the batteries reaches a certain value, so that the difference between the batteries can be effectively repaired, and the performance, the safety performance, the available capacity and the cycle life of the battery pack are improved.
As an improvement of the invention, the battery repair module comprises a variable constant current power supply module and a dissipation resistance device, wherein the variable constant current power supply module consists of an isolated digital constant current power supply, the variable constant current power supply module is used for carrying out equalizing charge on a single battery, the variable constant current power supply module is used for adjusting equalizing current according to the current multiplying power of a charging and discharging device, the dissipation resistance group is used for consuming the electric quantity of the single battery, and the dissipation resistance device consists of resistors which are connected in series and parallel.
As an improvement of the invention, the invention also comprises a man-machine interaction module which is connected with the control device.
As an improvement of the invention, the battery temperature sensor is also included, the temperature sensor is used for collecting the temperature of the battery and transmitting the temperature data to the control device,
a battery equalization repair method, comprising the steps of;
the battery state monitoring module collects the voltages of all the single batteries in the battery pack in real time and transmits the voltage information of all the single batteries to the control device;
the control device calculates the average value of the battery pack voltage according to all the single battery voltages;
when the difference value between a certain battery voltage and the average value exceeds a preset threshold value, the control device sends a repairing instruction to the battery repairing module, and the battery repairing module carries out balanced charge and discharge on the single battery according to the repairing instruction sent by the control device;
when the difference value between a certain battery voltage and the average value is lower than a preset threshold value, the control device sends a stop instruction to the battery repair module, and the battery repair module stops balanced charge and discharge operation on a single battery according to the stop instruction sent by the control device;
when the battery is subjected to balanced charge and discharge repair, the charge and discharge multiplying power is regulated by a battery charge and discharge device, and the battery charge and discharge device consists of a charge module, a discharge module and a charge and discharge multiplying power regulation module; the charge-discharge multiplying power of the charge-discharge multiplying power regulating module is provided with three grades, namely 0.2C, 0.5C and 1C, and the balance current of the battery repairing module is 0.25 times of the charge-discharge current multiplying power of the battery charge-discharge device, when a charge-discharge repairing mode is started, the battery charge-discharge device automatically sets the current multiplying power, the battery is charged and discharged by adopting the 0.2C charge-discharge multiplying power first, after one charge-discharge operation, the current multiplying power is regulated to 0.5C, the second charge-discharge is carried out, and then the current multiplying power is regulated to 1C, and the third charge-discharge is carried out, so that the cycle is carried out until the charge-discharge repairing mode is completed.
The single battery repair mode adopts a variable threshold value segmentation repair strategy: a first-level repair threshold A and a second-level repair threshold B are arranged, a difference value N between the voltage of a single battery and the average value is arranged,
when 15% < SOC <85%, and when A < N < B, pulse repairing mode is adopted, namely pulse mode is adopted to carry out balanced charge and discharge on single battery;
when 15% < SOC <85%, and B < N, adopting a continuous repairing mode to perform balanced charge and discharge on the single battery;
when the SOC is more than 85% or the SOC is less than 15%, and B is less than N, carrying out balanced charge and discharge on the single battery in a continuous repair mode; where SOC is the state of charge value of the battery.
Further, the primary repair threshold a is 0.02V, and the secondary repair threshold B is 0.04V.
Further, the pulse frequency of the pulse repairing mode is 1 time/s.
Compared with the prior art, the invention has the following advantages:
according to the invention, when the capacity difference between the batteries reaches a certain value, the batteries are repaired, so that the difference between the batteries can be effectively repaired, and the performance, the safety performance, the available capacity and the cycle life of the battery pack are improved.
Drawings
Fig. 1 is a schematic diagram of a battery equalization repair system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and detailed description. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present invention are shown in the accompanying drawings.
According to the invention, the difference between the single battery voltage and the average value of the battery voltage is analyzed, and then the single battery is repaired according to the fact that the difference is too small, so that the difference between the batteries can be effectively repaired, and the performance, the safety performance, the available capacity and the cycle life of the battery are improved. The specific inventive concept is explained in detail by the following examples.
Examples
Referring to fig. 1, a battery equalization repair system includes a control device 20, a battery repair module 40, a battery status monitoring module 30, and a battery charging/discharging device 50.
The input end of the battery state monitoring module 30 is connected with the junction of the single battery 11, the output end is connected with the input end of the control device 20, the input end of the battery repairing module 40 is connected with the output end of the control device 20, and the output end is connected with the junction of the single battery 11.
The battery state monitoring module 30 is configured to obtain voltages of all the individual batteries 11 in the battery pack 10, and transmit voltage information of all the individual batteries 11 to the control device 20.
The control device 20 is configured to calculate an average value of voltages of the battery pack 10 according to voltages of all the individual batteries 11, and when a difference between a certain battery voltage and the average value exceeds a preset threshold value, the control device 20 sends a repair instruction to the battery repair module 40, and when the difference between the certain battery voltage and the average value is lower than the preset threshold value, the control device 20 sends a stop instruction to the battery repair module 40.
The battery repair module 40 is configured to perform balanced charge and discharge on the single battery 11 according to the repair instruction sent by the control device 20, and stop the balanced charge and discharge operation on the single battery 11 according to the stop instruction sent by the control device 20.
The battery charging and discharging device 50 is used for charging and discharging the battery, and consists of a charging module, a discharging module and a charging and discharging multiplying power adjusting module; the charge-discharge multiplying power of the charge-discharge multiplying power regulating module is provided with three grades, namely 0.2C, 0.5C and 1C, and the balance current of the battery repairing module is 0.25 times of the charge-discharge current multiplying power of the battery charge-discharge device, when a charge-discharge repairing mode is started, the battery charge-discharge device automatically sets the current multiplying power, the battery is charged and discharged by adopting the 0.2C charge-discharge multiplying power first, after one charge-discharge operation, the current multiplying power is regulated to 0.5C, the second charge-discharge is carried out, and then the current multiplying power is regulated to 1C, and the third charge-discharge is carried out, so that the cycle is carried out until the charge-discharge repairing mode is completed. And the battery charging and discharging device provides charging and discharging currents with different multiplying powers, so that the battery is repaired under different current multiplying powers. The battery is repaired under the current multiplying power of the large, medium and small main circuits, so that the difference between the single batteries can be reduced to the maximum extent, and the balance effect is optimal.
According to the invention, the batteries are repaired periodically or when the capacity difference between the batteries reaches a certain value, so that the difference between the batteries can be effectively repaired, and the performance, the safety performance, the available capacity and the cycle life of the battery pack are improved. Meanwhile, the battery can be repaired under the current multiplying power of the large, medium and small main circuits, so that the difference between single batteries can be reduced to the maximum extent, and the balance effect is optimal.
In this embodiment, the battery repair module 40 includes a variable constant current power module and a dissipation resistor device, the variable constant current power module is composed of an isolated digital constant current power source, the variable constant current power module is used for equalizing charge of a single battery, the variable constant current power module adjusts equalizing current according to the current multiplying power of the charging and discharging device, the dissipation resistor group is used for consuming the electric quantity of the single battery, and the dissipation resistor device is composed of resistors connected in series and parallel. When the charge-discharge current multiplying power is unchanged, the output current value of the variable constant current module is unchanged, wherein the output current value of the variable constant current module is 0.25 times of the charge-discharge current multiplying power. The dissipation resistor module consists of resistors connected in series and parallel, changes the resistance parameters according to the charge-discharge current multiplying power change-over switch, adjusts the repair current and consumes the electric quantity of the battery.
In this embodiment, the system further includes a man-machine interaction module 70, where the man-machine interaction module 70 is connected to the control device 20. The man-machine interaction module realizes bidirectional communication with the control device, can set charge and discharge parameters and repair parameters, and displays battery state, repair state and repair evaluation effect.
The control device 20 is provided with a battery charge and discharge electric quantity calculation module 21, a battery repair electric quantity calculation module 22 and a battery repair effect analysis module 23 through language programs, wherein the battery charge and discharge electric quantity calculation module 21 is used for calculating the total electric quantity charged or discharged by the charge and discharge control device; the battery repair power calculation module 22 is configured to calculate the power that the battery repair module supplements the power entering the battery or the power released from the battery in an energy consumption manner; the battery repair effect analysis module 23 is used for calculating battery repair effects.
In one embodiment of the present invention, a battery temperature sensor 60 is also included, the temperature sensor 60 being configured to collect the temperature of the battery and transmit temperature data to the control device 20. The temperature of the battery can be monitored in real time through the temperature sensor.
The method for carrying out balanced repair on the battery by adopting the repair system comprises the following steps of;
the battery state monitoring module collects the voltages of all the single batteries in the battery pack in real time and transmits the voltage information of all the single batteries to the control device;
the control device calculates the average value of the battery pack voltage according to all the single battery voltages;
when the difference value between a certain battery voltage and the average value exceeds a preset threshold value, the control device sends a repairing instruction to the battery repairing module, and the battery repairing module carries out balanced charge and discharge on the single battery according to the repairing instruction sent by the control device;
when the difference value between a certain battery voltage and the average value is lower than a preset threshold value, the control device sends a stop instruction to the battery repair module, and the battery repair module stops balanced charge and discharge operation on a single battery according to the stop instruction sent by the control device;
when the battery is subjected to balanced charge and discharge repair, the charge and discharge multiplying power is regulated by a battery charge and discharge device, and the battery charge and discharge device consists of a charge module, a discharge module and a charge and discharge multiplying power regulation module; the charge-discharge multiplying power of the charge-discharge multiplying power regulating module is provided with three grades, namely 0.2C, 0.5C and 1C, and the balance current of the battery repairing module is 0.25 times of the charge-discharge current multiplying power of the battery charge-discharge device, when a charge-discharge repairing mode is started, the battery charge-discharge device automatically sets the current multiplying power, the battery is charged and discharged by adopting the 0.2C charge-discharge multiplying power first, after one charge-discharge operation, the current multiplying power is regulated to 0.5C, the second charge-discharge is carried out, and then the current multiplying power is regulated to 1C, and the third charge-discharge is carried out, so that the cycle is carried out until the charge-discharge repairing mode is completed.
In this embodiment, the single battery repair method adopts a variable-threshold segment repair strategy, and the variable-threshold segment repair strategy: a first-level repair threshold A and a second-level repair threshold B are arranged, a difference value N between the voltage of a single battery and the average value is set, wherein the first-level repair threshold A is 0.02V, the second-level repair threshold B is 0.04V,
when 15% < SOC <85%, and when A < N < B, adopting a pulse repairing mode, namely adopting a pulse mode to carry out balanced charge and discharge on a single battery, wherein the pulse frequency of the pulse repairing mode is 1 time/s;
when 15% < SOC <85%, and B < N, adopting a continuous repairing mode to perform balanced charge and discharge on the single battery;
when the SOC is more than 85% or the SOC is less than 15%, and B is less than N, carrying out balanced charge and discharge on the single battery in a continuous repair mode; where SOC is the state of charge value of the battery.
Taking lithium iron phosphate as an example, in the charge and discharge process, when the SOC of the battery is less than 15% and the SOC of the battery is more than 85% (the time of the battery in the process is shorter), the voltage change is rapid, and the difference between the batteries is obvious, so that the difference between the batteries can be reduced rapidly by adopting a continuous repair mode; when 15% < SOC <85%, and when 0.02 < N < 0.04V, the battery voltage change is gentle (the time that the battery is in the process is longer), the difference between batteries is smaller, in order to obtain better repairing effect in the whole charging and discharging process, when the battery voltage is in different areas, variable threshold value subsection repairing is adopted, so that the expansion of the difference between batteries and the consumption of electric energy can be avoided by adopting a pulse repairing mode; when 15% < SOC <85%, and B < 0.04V, the voltage of the battery changes rapidly, and the difference between the batteries is remarkable, so that the difference between the batteries can be reduced rapidly by adopting a continuous repair mode. And a repair mode of combining variable constant current supplementary electric quantity and passive consumed electric quantity is adopted. Each battery corresponds to an independent battery repair module.
The above embodiments are only for illustrating the present patent and not for limiting the technical solutions described in the present patent; thus, although the present patent has been described in detail with reference to the embodiments described above, it will be understood by those skilled in the art that the present patent may be modified or equivalents; all technical solutions and modifications thereof that do not depart from the spirit and scope of the present patent are intended to be covered by the scope of the claims of the present patent.
Claims (8)
1. A battery equalization repair system is characterized in that: the device comprises a control device, a battery repair module, a battery state monitoring module and a battery charging and discharging device;
the input end of the battery state monitoring module is connected with the junction of the single battery, the output end of the battery state monitoring module is connected with the input end of the control device, the input end of the battery repairing module is connected with the output end of the control device, and the output end of the battery repairing module is connected with the junction of the single battery;
the battery state monitoring module is used for acquiring the voltages of all the single batteries in the battery pack and transmitting the voltage information of all the single batteries to the control device;
the control device is used for calculating the average value of the battery pack voltage according to all the single battery voltages, sending a repairing instruction to the battery repairing module when the difference value between a certain battery voltage and the average value exceeds a preset threshold value, and sending a stopping instruction to the battery repairing module when the difference value between the certain battery voltage and the average value is lower than the preset threshold value;
the battery repair module is used for carrying out balanced charge and discharge on the single battery according to the repair instruction sent by the control device and stopping balanced charge and discharge operation on the single battery according to the stop instruction sent by the control device;
the battery charging and discharging device is used for charging and discharging the battery and consists of a charging module, a discharging module and a charging and discharging multiplying power adjusting module; the charge-discharge multiplying power of the charge-discharge multiplying power regulating module is provided with three grades, namely 0.2C, 0.5C and 1C, and the balance current of the battery repairing module is 0.25 times of the charge-discharge current multiplying power of the battery charge-discharge device, when a charge-discharge repairing mode is started, the battery charge-discharge device automatically sets the current multiplying power, the battery is charged and discharged by adopting the 0.2C charge-discharge multiplying power first, after one charge-discharge operation, the current multiplying power is regulated to 0.5C, the second charge-discharge is carried out, and then the current multiplying power is regulated to 1C, and the third charge-discharge is carried out, so that the cycle is carried out until the charge-discharge repairing mode is completed.
2. The battery equalization repair system of claim 1, wherein: the battery repair module comprises a variable constant current power supply module and a dissipation resistance device, wherein the variable constant current power supply module is composed of an isolated digital constant current power supply, the variable constant current power supply module is used for carrying out equalizing charge on a single battery, the variable constant current power supply module is used for adjusting equalizing current according to the current multiplying power of the charging and discharging device, the dissipation resistance group is used for consuming the electric quantity of the single battery, and the dissipation resistance device is composed of resistors which are connected in series and parallel.
3. The battery equalization repair system of claim 1, wherein: the system also comprises a man-machine interaction module, wherein the man-machine interaction module is connected with the control device.
4. The battery equalization repair system of claim 1, wherein: the battery temperature sensor is used for collecting the temperature of the battery and transmitting the temperature data to the control device.
5. A battery equalization repair method employing the battery equalization repair system of any one of claims 1 to 4, comprising the steps of;
the battery state monitoring module collects the voltages of all the single batteries in the battery pack in real time and transmits the voltage information of all the single batteries to the control device;
the control device calculates the average value of the battery pack voltage according to all the single battery voltages;
when the difference value between a certain battery voltage and the average value exceeds a preset threshold value, the control device sends a repairing instruction to the battery repairing module, and the battery repairing module carries out balanced charge and discharge on the single battery according to the repairing instruction sent by the control device;
when the difference value between a certain battery voltage and the average value is lower than a preset threshold value, the control device sends a stop instruction to the battery repair module, and the battery repair module stops balanced charge and discharge operation on a single battery according to the stop instruction sent by the control device;
when the battery is subjected to balanced charge and discharge repair, the charge and discharge multiplying power is regulated by a battery charge and discharge device, and the battery charge and discharge device consists of a charge module, a discharge module and a charge and discharge multiplying power regulation module; the charge-discharge multiplying power of the charge-discharge multiplying power regulating module is provided with three grades, namely 0.2C, 0.5C and 1C, and the balance current of the battery repairing module is 0.25 times of the charge-discharge current multiplying power of the battery charge-discharge device, when a charge-discharge repairing mode is started, the battery charge-discharge device automatically sets the current multiplying power, the battery is charged and discharged by adopting the 0.2C charge-discharge multiplying power first, after one charge-discharge operation, the current multiplying power is regulated to 0.5C, the second charge-discharge is carried out, and then the current multiplying power is regulated to 1C, and the third charge-discharge is carried out, so that the cycle is carried out until the charge-discharge repairing mode is completed.
6. The battery equalization repair method of claim 5, wherein: the single battery repair mode adopts a variable threshold value segmentation repair strategy: a first-level repair threshold A and a second-level repair threshold B are arranged, a difference value N between the voltage of a single battery and the average value is arranged,
when 15% < SOC <85%, and when A < N < B, pulse repairing mode is adopted, namely pulse mode is adopted to carry out balanced charge and discharge on single battery;
when 15% < SOC <85%, and B < N, adopting a continuous repairing mode to perform balanced charge and discharge on the single battery;
when the SOC is more than 85% or the SOC is less than 15%, and B is less than N, carrying out balanced charge and discharge on the single battery in a continuous repair mode; where SOC is the state of charge value of the battery.
7. The battery equalization repair method of claim 6, wherein: the primary repair threshold A is 0.02V, and the secondary repair threshold B is 0.04V.
8. The battery equalization repair method of claim 6, wherein: the pulse frequency of the pulse repairing mode is 1 time/s.
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| CN110858722A (en) * | 2018-08-23 | 2020-03-03 | 深圳沃达泰克科技有限公司 | Electric quantity equalization method of battery pack |
| CN110224474A (en) * | 2019-07-12 | 2019-09-10 | 重电智能科技扬州股份有限公司 | Photovoltaic cell system, street lamp and control method based on wireless equalization discharge |
| CN113696786B (en) * | 2021-08-23 | 2023-05-23 | 深圳市道通科技股份有限公司 | Battery equalization method and system |
| CN113809416B (en) * | 2021-08-26 | 2023-04-07 | 福建星云电子股份有限公司 | Method and system for rapidly repairing battery |
| CN113839106A (en) * | 2021-09-22 | 2021-12-24 | 国网山东省电力公司莱芜供电公司 | Battery repair management system |
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