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Battery module parallel tooling and battery module parallel system

A battery module and parallel technology, applied in battery circuit devices, secondary batteries, circuit devices, etc., can solve problems such as complex system structure, and achieve the effects of reducing system complexity, system cost, and system complexity.

Active Publication Date: 2018-08-03
CALB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a battery module parallel connection tool to solve the problem that each battery module is provided with a pre-charging circuit when the battery modules are connected in parallel, which increases the complexity of the system structure

Method used

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  • Battery module parallel tooling and battery module parallel system
  • Battery module parallel tooling and battery module parallel system
  • Battery module parallel tooling and battery module parallel system

Examples

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Embodiment Construction

[0031] Example of battery module parallel system

[0032] In this embodiment, the battery module is a lithium battery module, and the battery module is defined as a lithium battery pack composed of multiple single lithium batteries and other related components.

[0033] The number of batteries connected in series in each lithium battery pack is the same, and the batteries are the same type of lithium battery, but the capacity can be different. like figure 1 Shown is a specific implementation of the lithium battery pack. The lithium battery pack includes m×m series lithium batteries, m battery management units, 1 battery pack management unit and 1 or 2 fuses (other high-voltage protection devices can also be used), all of which are connected by cables. The battery management unit is responsible for monitoring the corresponding m strings of single cells and transmitting the monitoring content to the battery pack management unit. The monitoring content includes status informati...

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Abstract

The invention relates to a battery module parallel tooling and a battery module parallel system. The parallel tooling comprises two detecting joints, a pre-charging line is connected between the two detecting joints, when the detecting joints are connected in parallel, the two detecting joints are respectively connected to one end of a battery module and a parallel end, a pre-charging branch is connected, pre-charging is started, when the pre-charging is completed, a main branch is connected, and the battery module and the parallel end are connected through a connecting line to complete the parallel connection of the battery module. Through the parallel connection method, all battery modules can be connected in parallel by only one pre-charging line without adding parts such as redundant relays, pre-charging resistors or diodes and the like, which greatly reduces complexity of the system and saves cost of the system, moreover, the system does not require complex parallel control strategies, and reliability of the system is improved. In addition, the more battery modules, the more complexity and cost of the system can be reduced, and the circulation problem existing when large powersystems are connected in parallel is completely solved.

Description

technical field [0001] The invention relates to a battery module parallel connection tooling and a battery module parallel connection system. Background technique [0002] With the promotion and application of electric vehicles, the cost of batteries has been decreasing year by year, and has been gradually accepted by the market. At the same time, with the depletion of traditional energy sources, the application of new electrochemical energy storage power stations led by lithium batteries is becoming more and more common, and energy storage systems Unlike the electric vehicle system, which can be completed with one battery pack, it requires multiple high-voltage battery packs to be used in parallel to form a large-scale energy storage power station system to meet the application needs. The parallel connection of battery packs refers to the connection of two or more battery packs with the same or different capacity specifications through positive and negative busbars. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42
CPCH01M10/4207H01M10/4257H01M2010/4271H01M2010/4278H02J7/0013H02J7/0021H02J7/0027H02J7/0077Y02E60/10
Inventor 刘祖凡郝书奎臧思佳徐海锋
Owner CALB CO LTD
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