CN201303013Y - Battery module - Google Patents

Abstract

The utility model discloses a battery module, it includes a fixed battery device, a plurality of group battery and an at least battery protection circuit module. The fixed battery device comprises a positive conductive plate and a negative conductive plate. Each battery pack has a plurality of cells connected in series, the plurality of battery packs being connected in parallel between a positive conductive plate and a negative conductive plate. The battery protection circuit module is provided with a plurality of signal connecting ends, and the positive electrode and the negative electrode of each battery are respectively and electrically connected with one signal connecting end of the battery protection circuit module. Therefore, when the battery in the battery pack is abnormal, the battery protection circuit module can detect the abnormal battery in time according to the change of current and voltage, thereby facilitating the maintenance.

Description

battery module

technical field

The utility model relates to a battery combination technology, in particular to a battery module.

Background technique

Currently, battery modules have been widely used. For example, battery modules are used in hybrid vehicles, and the combination of battery modules and electric motors can reduce environmental pollution and reduce fuel consumption.

Please refer to FIG. 4 , a conventional battery module 1 ′ includes several battery packs connected in series, and each battery pack includes several parallel-connected batteries 10 ′.

However, because the batteries in the battery pack are connected in parallel, unless the batteries in one battery pack are abnormal at the same time, it is difficult to find out in time when there is an abnormality in a battery, which will bring inconvenience to maintenance.

Utility model content

The main purpose of this utility model is to provide a battery module that can be easily found in time when a battery is abnormal in view of the defects in the above-mentioned background technology.

To achieve the above purpose, the battery module provided by the present invention includes a fixed battery device, several battery packs and at least one battery protection circuit module. The stationary battery unit includes a positive conductive plate and a negative conductive plate. Each battery pack has several batteries connected in series, and the several battery packs are connected in parallel between the positive conductive plate and the negative conductive plate. The battery protection circuit module has several signal connection terminals, and the positive and negative poles of each battery are respectively electrically connected to a signal connection terminal of the battery protection circuit module.

As mentioned above, the battery module of the utility model forms a battery pack through batteries connected in series, and several battery packs are connected in parallel and arranged between the positive electrode conductive plate and the negative electrode conductive plate. A signal connection terminal is electrically connected, so when a battery in the battery pack is abnormal, the battery protection circuit module can detect the abnormal battery in time according to the change of current and voltage, thereby facilitating maintenance.

Description of drawings

FIG. 1 is a schematic structural view of an embodiment of the battery module of the present invention without the battery protection circuit module.

FIG. 2 is a schematic diagram of the connection relationship between the battery pack and the battery protection circuit module.

FIG. 3 is a circuit diagram of the connection relationship between the battery protection circuit module shown in FIG. 2 and a battery pack.

FIG. 4 is a schematic structural diagram of a current battery module.

[Background technique]

Battery Module 1 `Battery 10`

[this utility model]

Battery Module 1 Fixed Battery Unit 10

Positive conductive plate 11 Negative conductive plate 12

Positive connection post 13 Negative connection post 14

Battery Pack 20 Batteries 21

Battery protection circuit module 30

Detailed ways

In order to illustrate the technical content, structural features, purpose and effect of the present utility model in detail, the following examples are given to illustrate in detail with accompanying drawings.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , the battery module 1 of the present invention includes a fixed battery device 10 , a plurality of battery packs 20 and a plurality of battery protection circuit modules 30 . The fixed battery device 10 includes a positive electrode conductive plate 11 and a negative electrode conductive plate 12 which are made of uniform nickel metal plate and are roughly in the shape of a rectangular plate. The positive electrode conductive plate 11 is parallel to the negative electrode conductive plate 12, and one end of the positive electrode conductive plate 11 protrudes a cylindrical positive electrode connecting column 13 for connecting with an external circuit (not shown in the figure), and one end of the negative electrode conductive plate 12 protrudes a A cylindrical negative connection post 14 for connecting with an external circuit (not shown in the figure). One end of the positive conductive plate 11 provided with the positive connecting post 13 is opposite to the end of the negative conductive plate 12 provided with the negative connecting post 14 . The positive connecting post 13 and the negative connecting post 14 are a symmetrical charging and discharging point for increasing the charging and discharging efficiency of the fixed battery device 10 .

The positive and negative poles of the adjacent batteries 21 of the plurality of battery packs 20 are abutted (to form a series relationship), and each battery 21 is arranged in a straight line, and each battery pack 20 abuts on the positive electrode conductive plate 11 and the negative electrode conductive plate 12 in parallel. between. In this way, the resistance distributed on each battery group 20 by the positive electrode conductive plate 11 and the negative electrode conductive plate 12 can be equalized, so that the currents flowing on each battery group 20 can be equalized and the charging time can be consistent. The batteries 21 in the battery pack 20 can be lithium batteries.

The plurality of battery protection circuit modules 30 are respectively arranged corresponding to a battery pack 20 , and each battery protection circuit module 30 has a plurality of signal connection terminals. The positive and negative poles of each battery 21 in the battery pack 20 are electrically connected to a signal connection terminal of the battery protection circuit module 30, so that the battery protection circuit module 30 can detect the current and voltage of each battery 21. When the battery pack When a battery 21 in 20 is abnormal, the battery protection circuit module 30 can detect the abnormal battery 21 in time according to the change of current and voltage.

In summary, the battery module 1 of the present utility model forms a battery pack 20 through batteries 21 connected in series, and several battery packs 20 are connected in parallel and arranged between the positive electrode conductive plate 11 and the negative electrode conductive plate 12. The positive and negative electrodes of each battery 21 They are respectively electrically connected to a signal connection terminal of the battery protection circuit module 30, so when there is an abnormality in the battery 21 in the battery pack 20, the battery protection circuit module 30 can detect the abnormal battery in time according to the change of current and voltage. 21, thus facilitating maintenance.

Claims (3)

1. A battery module, comprising a fixed battery device, several parallel battery packs and at least one battery protection circuit module, the fixed battery device includes a positive conductive plate and a negative conductive plate; it is characterized in that: each battery pack There are several batteries connected in series, the several battery packs are connected in parallel between the positive and negative conductive plates, the battery protection circuit module has several signal connection terminals, and the positive and negative poles of each battery are respectively connected A signal connection end is electrically connected. 2. The battery module according to claim 1, wherein the positive conductive plate is parallel to the negative conductive plate, a positive connecting column protrudes from one end of the positive conductive plate, and a negative connection post protrudes from one end of the negative conductive plate. One end of the positive electrode conductive plate provided with the positive connecting column is opposite to the end of the negative electrode conductive plate provided with the negative connecting column. The groups abut in parallel to each other between the positive and negative conductive plates. 3. The battery module according to claim 1, wherein the battery in the battery pack is a lithium battery.

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