CN219626858U

CN219626858U - Battery information acquisition device and battery module

Info

Publication number: CN219626858U
Application number: CN202320243859.XU
Authority: CN
Inventors: 都治军; 刘云萍; 陈爽; 张毅鸿; 郝园园
Original assignee: Chongqing Three Gorges Times Energy Technology Co ltd
Current assignee: Chongqing Gengchen Energy Technology Co.,Ltd.
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-09-01
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses a battery information acquisition device which is characterized by comprising sampling terminals, sampling wires and a connecting part, wherein the sampling terminals are attached to the side surface of a battery cell, and a plurality of sampling terminals are connected in parallel through the sampling wires and are electrically connected with the connecting part; the utility model also discloses a battery module, wherein a plurality of battery information acquisition devices are arranged in the battery module, so that information acquisition in the battery module is simplified, a plurality of sampling terminals are connected on the same sampling line, the information sampling line is simple and convenient to wire, the wiring harness is concise, the reliability of the information acquisition and the wiring harness is effectively improved, the temperature and deformation data of each battery core in the battery are better monitored, the temperature uniformity of the battery core is improved, the service life of a battery pack is prolonged, and the battery module has higher popularization value.

Description

Battery information acquisition device and battery module

Technical Field

The utility model relates to the technical field of energy storage and power batteries, in particular to a battery information acquisition device and a battery module.

Background

When the energy storage battery pack is charged and discharged, a large amount of heat can be generated, the space arrangement of the batteries is compact, the temperature in the energy storage battery pack rises rapidly, even if the temperature of the total arrangement space in the battery pack and the container can be effectively reduced under the action of the existing heat dissipation device, the local heat in the container is difficult to be uniformly discharged, and the battery running environments have larger difference. The battery pack can cause serious difference in internal resistance and capacity among batteries when operated for a long time under the environment with larger temperature difference, so that partial batteries can be overcharged or overdischarged, the performance and the service life of an energy storage system are influenced, and serious potential safety hazards can be caused. Therefore, the deformation and temperature data of each battery cell are accurately collected and monitored, and the method has great significance in guaranteeing the safe and stable operation of the battery pack. Because the number of the electric cores in the energy storage battery pack is numerous, deformation and temperature parameters of the energy storage battery pack are acquired one by one, wiring is difficult, wiring harness is complex, and various problems are easy to occur.

Disclosure of Invention

The utility model mainly aims to provide a battery information acquisition device and a battery module, and aims to solve the limitation of the existing battery information acquisition.

In order to achieve the above purpose, the present utility model proposes the following technical solution, including: the battery information acquisition device is characterized by comprising sampling terminals, sampling wires and connecting parts, wherein the sampling terminals are attached to the side surfaces of the battery cells, the sampling terminals are connected in parallel through the sampling wires and are electrically connected with the connecting parts, and the connecting parts are arranged on the other side surfaces of the battery cells.

Furthermore, the sampling terminal is attached to one large side face of the battery cell.

Further, the sampling surface of the sampling terminal is perpendicular to the connecting surface of the connecting part.

Further, the sampling terminal is a deformation sensor.

Further, the sampling terminal is a temperature sensor.

Furthermore, the utility model provides a battery module which is characterized by comprising a plurality of battery cells, a plurality of battery cell information acquisition devices and a plurality of information collection plates.

Further, the battery cell information acquisition devices are arranged on the large side surfaces of the battery cells in a pairwise opposite mode, and the connection parts of the battery cell information acquisition devices are respectively and electrically connected with the information collecting plates arranged on the same side.

In summary, the utility model has simple structure, simplifies the information collection in the battery module, connects a plurality of sampling terminals on the same sampling line, has simple wiring and simple wiring harness, effectively improves the reliability of the information collection and the wiring harness, better monitors the temperature and deformation data of each battery core in the battery, helps to improve the temperature uniformity of the battery core, prolongs the service life of the battery pack, and has higher popularization value.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a battery information acquisition device;

fig. 2 is a schematic view of a structure of a battery information collecting device in a battery module;

fig. 3 is a schematic structural diagram of the battery information acquisition device and the battery cell in the battery module;

reference numerals illustrate:

the device comprises a 1-battery information acquisition device, an 11-sampling terminal, a 12-sampling line, a 13-connecting part, a 2-battery cell and a 4-signal collecting plate.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In general, when the energy storage battery pack is charged and discharged, a large amount of heat is generated, the space arrangement of the batteries is compact, the temperature in the energy storage battery pack is rapidly increased, the local heat in the box is difficult to be uniformly discharged, and the running environments of the batteries are greatly different. The battery pack can cause serious difference in internal resistance and capacity among batteries when operated for a long time under the environment with larger temperature difference, so that partial batteries can be overcharged or overdischarged, the performance and the service life of an energy storage system are influenced, and serious potential safety hazards can be caused. Therefore, the deformation and temperature data of each battery cell are accurately collected and monitored, and the method has great significance in guaranteeing the safe and stable operation of the battery pack. Because the number of the electric cores in the energy storage battery pack is numerous, deformation and temperature parameters of the energy storage battery pack are acquired one by one, wiring is difficult, wiring harness is complex, and even failure is caused.

In order to solve the above problems, the present utility model provides a battery information acquisition device and a battery module, and fig. 1 to 3 are schematic three-dimensional structures of an embodiment of the present utility model.

Referring to fig. 1, a battery information acquisition device 1 is characterized by comprising sampling terminals 11, sampling lines 12 and a connecting portion 13, wherein the sampling terminals 11 are attached to the side surfaces of the electric cores 2, in this embodiment, three sampling terminals 11 are connected in parallel to one sampling line 12 and used for acquiring deformation signals or temperature signals of three electric cores 2 side by side, as shown in fig. 3, compared with the traditional form that one sampling terminal 11 is connected with one sampling line 12, the embodiment of the utility model reduces the number of the sampling lines 12 to one third of the original number, and greatly simplifies the structure of a wire harness. The sampling line 12 is electrically connected to the connection portion 13, and the connection portion 13 is disposed on the other side surface of the battery cell 2.

Further, the sampling terminal 11 is attached to one large side surface of the battery cell 2.

Further, the sampling surface of the sampling terminal 11 is perpendicular to the connection surface of the connection portion 13, that is, the sampling surface of the sampling terminal 11 is attached to the large side surface of the battery cell 2, and the connection surface of the connection portion 13 is disposed on the small side surface of the battery cell 2, so that the wiring harness arrangement is facilitated.

Further, the sampling terminal 11 is a deformation sensor. In general, during the working process of the battery cell 2, deformation is generated by expanding in a direction perpendicular to the large side surface of the battery cell 2, so that the deformation condition of the battery cell 2 can be accurately monitored by arranging the deformation sensor sampling terminal 11 on the large side surface of the battery cell 2.

Further, the sampling terminal 11 is a temperature sensor. The battery information acquisition device 1 can be used for monitoring deformation signals of the battery cell 2, and can also monitor temperature signals of the battery cell 2 or other information needing to be acquired.

Furthermore, the utility model provides a battery module, which is characterized by comprising a plurality of battery cells 2, a plurality of battery cell information acquisition devices 1 and a plurality of information collection plates 4.

Furthermore, the battery cell information acquisition devices 1 are arranged on the large side surfaces of the battery cells 2 in a pair-by-pair manner, and the connection parts 13 of the battery cell information acquisition devices are respectively and electrically connected with the information collecting plates 4 arranged on the same side. In general, the connection portion 13 and the information collecting plate 4 can be connected by welding, and after preliminary positioning, the battery cells 1 can be stacked in groups, and finally, the connection portion 13 and the information collecting plate 4 are welded at the periphery, so that the production flow of the battery module is optimized, and the efficiency is improved.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. The battery information acquisition device is characterized by comprising sampling terminals, sampling wires and connecting parts, wherein the sampling terminals are attached to the side surfaces of the battery cells, the sampling terminals are connected in parallel through the sampling wires and are electrically connected with the connecting parts, and the connecting parts are arranged on the other side surfaces of the battery cells.

2. The battery information acquisition device according to claim 1, wherein the sampling terminal is attached to one large side surface of the battery cell.

3. The battery information collecting apparatus according to claim 2, wherein the sampling surface of the sampling terminal is perpendicular to the connection surface of the connection portion.

4. A battery information acquisition device according to claim 3, wherein the sampling terminal is a strain sensor.

5. A battery information acquisition device according to claim 3, wherein the sampling terminal is a temperature sensor.

6. A battery module comprising a plurality of cells, a plurality of battery information collection devices according to any one of claims 1-5, and a plurality of information collection plates.

7. The battery module according to claim 6, wherein the battery information collecting devices are disposed on the large sides of the cells in a pair, and the connection portions of the battery information collecting devices are electrically connected to the information collecting plates disposed on the same side.