Control system for battery module

A technology of control system and battery module, applied in the arrangement of multiple synchronous batteries, parallel conversion of batteries, battery circuit device, etc.

Pending Publication Date: 2018-02-02
OPTIMUM BATTERY CO LTD
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  • Abstract
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Problems solved by technology

However, since the active equalization module only works when charging is about to end, and does not work when discharging (the reason is that the discharge current is extremely complicated and the discharge current is irregular, and it is large and small), which leads to high charge and low discharge. The phenomenon occurs, that is, the battery module does not fully charge each single cell when charging, and does not put all the single cells to the specified level when discharging, which eventually leads to a shorter electric vehicle range

Method used

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  • Control system for battery module
  • Control system for battery module
  • Control system for battery module

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Embodiment Construction

[0011] In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

[0012] When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0013] see f...

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Abstract

The present invention provides a battery module control system, which includes multiple battery packs, multiple switch units, charging and discharging devices, and a control unit; multiple switch units are connected in pairs to form a series circuit and are located at the head end of the series line and The switch units at the end are also connected to the charging and discharging device respectively; each switch unit located in the middle of the series line is also connected to the positive interface of one battery group and the negative interface of the other battery group in two adjacent battery groups; When a battery pack is in a discharging state, the control unit controls each switch unit to be turned on in the first manner, and when the control unit detects that a certain battery pack has reached the discharge cut-off voltage, the control unit controls to connect to the negative terminal of a certain battery pack. The switch unit is turned on in the second manner until the plurality of battery packs reach the discharge cut-off voltage. The control system of the battery module provided by the invention improves the utilization rate of the battery, thereby increasing the mileage of the electric vehicle.

Description

【Technical field】 [0001] The invention relates to the technical field of electric vehicles, in particular to a control system of a battery module. 【Background technique】 [0002] Existing battery modules usually connect several single batteries in series and parallel to form a battery module to meet the electricity demand of electric vehicles. For example, the existing composition method is a strong string structure. First, multiple single cells are connected in parallel to form a battery pack, and then the multiple battery packs are fixed and assembled into a battery module by screws and nuts to realize the series connection of multiple battery packs. [0003] In order to improve the consistency among multiple battery packs, an active equalization module is usually used to balance the multiple battery packs. However, since the active equalization module only works when charging is about to end, and does not work when discharging (the reason is that the discharge current is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0024H02J7/0019
Inventor 吴华
Owner OPTIMUM BATTERY CO LTD
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