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Power battery module equalization system and control method thereof

A battery module and power battery technology, which is applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of increasing the volume and cost of power battery packs, voltage imbalance, damage, etc.

Pending Publication Date: 2022-07-08
AUTEL INTELLIGENT TECHNOLOGY CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of realizing the embodiment of the present invention, the inventors found that there are at least the following problems in the above related technologies: the voltage imbalance of the cells in the battery module is partly due to the deterioration of the performance of the battery cells, resulting in irreversible damage and must be replaced; Partly due to charging habits, long-term high-current charging, the balance capability of the battery management system (BATTERY MANAGEMENT SYSTEM, BMS) has been unable to reduce the growth trend of the voltage difference between the cells, the current common solution to the above problems on the market is in Adding module equalization equipment to the system for adjustment will greatly increase the size and cost of the power battery pack, and usually the module equalization equipment can only realize the function of equalization control

Method used

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  • Power battery module equalization system and control method thereof
  • Power battery module equalization system and control method thereof
  • Power battery module equalization system and control method thereof

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Embodiment 1

[0039] The embodiment of the present invention provides a power battery module equalization system, please refer to figure 1 , which shows the structure of a power battery module balancing system provided by an embodiment of the present invention. The power battery module balancing system 100 includes: a commercial power conversion module 110 , a strong power management module 120 , an output module 130 , and a battery Module 140, electronic load 150 and / or power transfer module 160, sampling module 170 and microcontroller unit MCU.

[0040] The mains conversion module 110 is connected to the alternating current mains AC, and is configured to output direct current; for details, please refer to figure 2 , which shows the structure of another power battery module balancing system provided by the embodiment of the present invention. The mains conversion module 110 includes: a filter module 111, connected to the alternating current mains AC, and configured to The electric AC is ...

Embodiment 2

[0055] The embodiment of the present invention provides a control method of the power battery module balancing system as described in the first embodiment, please refer to Figure 5 , which shows the flow of a control method for a power battery module balancing system provided by an embodiment of the present invention. The method includes but is not limited to the following steps:

[0056] Step S100: connect to the cloud platform and obtain module parameters of the connected battery module;

[0057]In the embodiment of the present invention, the module parameters of different types of battery modules or power batteries in the battery modules are stored in the cloud platform, and the system reads or recognizes when a new battery module or power battery is connected. The serial number or model of the battery module or power battery, and then query the module parameters of the battery module or power battery through the cloud platform to further configure battery capacity, batter...

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Abstract

The embodiment of the invention relates to the field of battery equalization design, and discloses a power battery module equalization system and a control method thereof, and the system comprises a commercial power conversion module, a strong current management module, an output module, a battery module, an electronic load, a power transfer module, a sampling module and a micro-control unit. According to the system, the electronic load and / or the power transfer module can be accessed to realize equalization when the sampling module acquires that the voltage difference of each power battery in the battery module is relatively large, and the output power is adjusted by adjusting the on-off of a switching tube in the strong current management module to carry out rapid charging when the voltage difference of each power battery is relatively small; the system is simple in structure and easy to control.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of battery balancing design, and in particular, to a power battery module balancing system and a control method thereof. Background technique [0002] At present, among the faults of new energy vehicle power battery packs, the proportion of faults with unbalanced unit voltages accounts for a large proportion. The practice of most repair shops is to replace the modules with unbalanced unit voltages. When the new module is replaced in the battery pack, it is necessary to ensure that the voltage of the new module is consistent with the voltage of other modules in the battery pack. Usually, the module voltage is adjusted by the module equalization device. The voltage of the new module is higher than that of other modules. When the voltage of the new module is lower than the voltage of other modules, the new module is charged, and finally the voltage of the new module is adjusted to be consi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/04H02M7/04H02M3/04H02M1/42H02M1/14
CPCH02J7/00032H02J7/0014H02J7/0047H02J7/00714H02J7/04H02M7/04H02M3/04H02M1/42H02M1/14Y02T10/70
Inventor 王维林李宏
Owner AUTEL INTELLIGENT TECHNOLOGY CORP LTD