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Battery pack and bus bar open circuit detection method using the battery pack

A technology for bus bars and battery packs, applied in battery pack components, charge balancing circuits, arrangement of multiple synchronous batteries, etc. The effect of preventing burnout

Active Publication Date: 2022-06-03
SK ON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For example, the technology in the existing literature only uses fuses to short-circuit the path of current flow, and in the existing literature, the unit cells are connected in parallel, but in this patent, the unit cells are connected in series when solving the problem, so the circuit structure itself is completely different
That is, it is difficult to solve the above-mentioned problem of reverse voltage generated by the current flowing in the balance circuit when the bus bar is open circuit and the problem of damage to the battery management board caused by it using the method as in the existing literature

Method used

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  • Battery pack and bus bar open circuit detection method using the battery pack
  • Battery pack and bus bar open circuit detection method using the battery pack
  • Battery pack and bus bar open circuit detection method using the battery pack

Examples

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Embodiment Construction

[0040] Below, with reference to the accompanying drawings, the present invention with the above-mentioned structure is used for bus bar open circuit detection and reverse reverse prevention.

[0043] The module includes unit cells, which are respectively connected in parallel with the balancing circuit. The module can

[0044] The bus bars are connected in series with the adjacent modules. When the modules are two, only one of the sinks is required

[0045] In the prior art, a battery pack consists only of the modules and at least one bus bar connecting the modules in series.

[0046] In order to solve this problem, in the present invention, as shown in FIG. 4, the battery pack also includes a parallel connection with the bus bar

[0047] The connection state of the protection resistor is described in more detail below. As mentioned above, a said unit

[0049] Typically a bus bar is considered the same as a wire, ie, ideally, the resistance is zero. In addition, the protection r...

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Abstract

The invention discloses a battery pack and a bus bar open-circuit detection method using the battery pack. The battery pack includes: a plurality of modules, including unit cells connected in parallel with a balancing circuit, and is composed of a single unit cell, or consists of multiple modules. The unit cells are connected in series; at least one bus bar, one end of which is connected to the positive pole of one of the modules, and the other end is connected to the negative pole of the other module, so as to connect the adjacent modules in series; and protection resistor, connected in parallel with the bus bar. The battery pack of the present invention detects whether a bus bar connecting unit cells is open due to damage or the like, and prevents the battery management board from being damaged due to reverse voltage generated when the bus bar is damaged.

Description

Battery pack and method for detecting open bus bar using the same technical field [0001] The present invention relates to a bus bar connection state protection device for detecting open bus bars and preventing reverse voltage. A battery pack for protecting a circuit and a bus bar open circuit detection method using the battery pack are provided. Background technique [0002] In recent years, as the problem of environmental pollution has gradually become serious, various fields are widely carried out to reduce fossil fuels. the use of, but the use of alternative kinetic studies. One of them is in the automotive sector, where electric vehicles are being developed or at the same time using Hybrid vehicles, etc., which use fossil fuels and electricity to reduce the consumption of fossil fuels, have been commercialized. [0003] In order to operate such an electric vehicle, a very high capacity battery pack is required, such a battery pack comprising unit cells and a bus b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/507H01M50/502G01R31/36H01M50/249H01M50/505H01M50/51
CPCG01R31/50H02J7/0029H01M50/51H01M50/505H01M50/249H01M10/482H02J7/0016G01R31/385H01M10/4207G01R31/3835H01M10/425H02J7/0019H01M2010/4271H01M2220/20H01M2200/30Y02T10/70H01M50/597H01M50/502H01M50/204G01R31/54Y02E60/10
Inventor 黄圭敏
Owner SK ON CO LTD
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