Battery cell module and battery module

Abstract

The utility model provides a battery cell module and battery module, the battery cell module comprises an accommodating shell, a partition plate for dividing the accommodating shell into a plurality of accommodating cavities, and a plurality of pole piece groups located in the accommodating shell, the pole piece groups abut against the partition plate and the accommodating shell, the partition plate is made of a heat conduction material, and the pole piece groups are made of a heat conduction material. A flow channel is integrated in the partition plate, the flow channel is arranged adjacent to all the pole piece groups, and a liquid inlet and a liquid outlet are formed in the two ends of the flow channel. According to the battery cell module and the battery module disclosed by the utility model, the flow channels are integrated in the partition plates, so that the heat dissipation of the pole piece group can be realized, the heat dissipation effect of the battery cell module is improved to the maximum efficiency, and the use requirements are met.

Description

Technical Field

[0001] The utility model relates to an electric core module and a battery module. Background Art

[0002] Currently, battery heat dissipation is done at the battery module level. The battery cell is just a simple energy storage unit, and its heat dissipation collection system needs to be processed at the battery module level. However, this method will increase the difficulty of module integration.

[0003] In addition, the current battery cooling system is mostly bottom liquid cooling, with upper and lower temperature stratification, which can reach as high as 10°C, causing inconsistent operating temperatures of the battery cell electrodes, which has a negative impact on the battery cell life and energy charging and discharging.

[0004] In view of this, it is necessary to improve the existing battery cell module to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a battery cell module to solve the problem that the heat dissipation system of the existing battery is difficult to integrate at the battery module level and easily causes inconsistent working temperature of the battery cell pole pieces.

[0006] To achieve the above-mentioned purpose, the utility model provides a battery cell module, which includes a containing shell, a partition plate for dividing the containing shell into multiple containing cavities, and multiple pole piece groups located in the containing shell, the pole piece groups are abutted against the partition plate and the containing shell, the partition plate is made of heat-conducting material, a flow channel is integrated in the partition plate, the flow channel is arranged adjacent to all pole piece groups, and the two ends of the flow channel are a liquid inlet and a liquid outlet.

[0007] As a further improvement of the present invention, the liquid inlet and the liquid outlet protrude outside the receiving shell, and the liquid inlet and the liquid outlet are located at the same end of the receiving shell.

[0008] As a further improvement of the present invention, the pole piece groups are divided into two rows, the partition plate comprises a transverse partition plate arranged between the two rows of the pole piece groups, and the flow channel is integrated in the transverse partition plate.

[0009] As a further improvement of the present utility model, the battery cell module also includes two temperature collection components, each of which has a collection part and a connecting part. The collection part is integrated in the containing shell on both sides. Each of the collection parts is arranged adjacent to a row of electrode groups, and the containing shell is made of heat-conductive material.

[0010] As a further improvement of the present invention, along the height direction, the temperature collecting component is arranged in the middle of the receiving shell.

[0011] As a further improvement of the present invention, the connecting portion is connected to the collecting portion and is located outside the receiving shell.

[0012] As a further improvement of the present invention, each of the electrode groups includes a positive electrode and a negative electrode, and the battery cell module also includes a positive electrode collector connecting the positive electrodes of multiple electrode groups and a negative electrode collector connecting the negative electrodes of multiple electrode groups.

[0013] As a further improvement of the present invention, the battery cell module also includes an injection molded cover for enclosing the electrode group in the accommodating shell, and a positive electrode platform and a negative electrode platform formed on the injection molded cover, and the positive electrode platform and the negative electrode platform are electrically connected to the positive electrode collector and the negative electrode collector respectively.

[0014] As a further improvement of the present invention, the receiving shell is made of metal material.

[0015] The utility model also provides a battery module, which includes the battery core module as described above.

[0016] The beneficial effect of the utility model is that the cell module and the battery module of the utility model can achieve heat dissipation of the electrode group by integrating the flow channel in the partition plate, and improve the heat dissipation effect of the cell module itself with maximum efficiency to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the battery module of the utility model;

[0018] Figure 2 It is a schematic diagram of the exploded structure of the battery module of the utility model;

[0019] Figure 3 It is a side sectional structural schematic diagram of the battery core module of the utility model. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figures 1 to 3 As shown, the battery module of the present invention includes a plurality of battery core modules 100. The battery module here can be an energy storage battery, or other batteries used in other fields.

[0024] The battery cell module 100 includes a housing shell 1, a partition plate 2 for dividing the housing shell 1 into a plurality of housing cavities 11, a plurality of electrode groups 3 located in the housing shell 1, two temperature collection components 4, a positive electrode collector 5, a negative electrode collector 6, an injection molded cover 7 for sealing the electrode group 3 in the housing shell 1, and a positive electrode stage 8 and a negative electrode stage 9 formed on the injection molded cover 7.

[0025] Each of the electrode sets 3 includes a positive electrode 31 and a negative electrode 32 . The positive electrode current collector 5 is used to connect the positive electrodes 31 of the plurality of electrode sets 3 . The negative electrode current collector 6 is used to connect the negative electrodes 32 of the plurality of electrode sets 3 .

[0026] The positive electrode stage 8 and the negative electrode stage 9 are electrically connected to the positive electrode current collector 5 and the negative electrode current collector 6 respectively, so as to realize parallel connection of multiple electrode sheet groups 3 .

[0027] The positive electrode current collector 5 and the negative electrode current collector 6 are also integrated into the injection molded cover 7 , and the injection molded cover 7 is used as top insulation and protection.

[0028] The partition plate 2 includes a transverse partition plate 21 and a longitudinal partition plate 22 arranged between two rows of the electrode groups 3. In this embodiment, there is one transverse partition plate 21 and two longitudinal partition plates 22 to divide the receiving shell 1 into six receiving chambers 11.

[0029] The electrode group 3 can be wound or laminated. Under the production line conditions of the electrode group 3 of the existing production line, multiple parallel expansion can be achieved to achieve large-capacity external characteristics and reduce the demand for production lines.

[0030] Correspondingly, in this embodiment, the number of the electrode sets 3 is six, each of the electrode sets 3 is accommodated in one of the accommodating chambers 11 , and the electrode sets 3 are abutted against the partition plate 2 and the accommodating shell 1 .

[0031] In this embodiment, the housing shell 1 and the partition plate 2 are both made of heat-conducting materials. Furthermore, the housing shell 1 is made of metal materials, and the housing shell 1 and the partition plate 2 are both made of aluminum alloy materials and are integrally formed.

[0032] The partition plate 2 is integrated with a flow channel 23, and further, the flow channel 23 is integrated in the transverse partition plate 21. In this way, the flow channel 23 can be arranged adjacent to all the electrode groups 3, and the electrode groups 3 on both sides can be cooled at the same time. The flow channel 23 is parallel to the flow channel 23 and is distributed to each receiving cavity 11 position, which can reduce resistance.

[0033] Insulating paint is applied inside the flow channel 23 or a static heat exchange medium is arranged outside the flow channel 23 to be used as insulation between the electrode group 3 to avoid electrical risks such as short circuit.

[0034] The flow channel 23 is disposed adjacent to all the pole piece groups 3, and the two ends of the flow channel 23 are a liquid inlet 24 and a liquid outlet 25. The liquid inlet 24 and the liquid outlet 25 protrude outside the receiving shell 1, and the liquid inlet 24 and the liquid outlet 25 are located at the same end of the receiving shell 1. The liquid inlet 24 and the liquid outlet 25 are in communication with an external cooling system.

[0035] In special circumstances such as the pole piece group 3 in the battery cell being out of control, the aluminum shell can be melted at high temperature, and the cooling medium in the flow channel 23 can come out to achieve high temperature suppression of the corresponding pole piece group 3.

[0036] In addition, during the charge and discharge cycle of the battery cell module 100, the electrode group 3 expands, but the provision of the transverse partition 21 and the flow channel 23 can strengthen the compaction of the electrode group 3, have the effect of absorbing the expansion of the battery cell, play a buffering effect, and achieve the goal of prolonging the service life.

[0037] The temperature collection component 4 has a collection part and a connection part 41. The collection part is integrated in the receiving shell 1 on both sides, and each of the collection parts is arranged adjacent to a row of electrode groups 3. In the height direction, the temperature collection component 4 is arranged in the middle of the receiving shell 1. The connection part 41 is connected to the collection part and is located outside the receiving shell 1. The collection part is a sheet-shaped thermocouple arranged at the center of the large surface of the electrode group 3 to read the temperature of the electrode group 3. The wiring harness is flattened, etched along the receiving shell 1, and filled with insulating glue inside for data transmission.

[0038] The cell module 100 and the battery module of the present invention can achieve heat dissipation for the electrode group 3 by integrating the flow channel 23 in the partition plate 2, and improve the heat dissipation effect of the cell module 100 itself with maximum efficiency to meet the use requirements; by providing the temperature collection component 4 and the flow channel 23, the integration difficulty of the battery module can be reduced, and the product cost can be reduced by scale and automation.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A battery cell module, characterized in that: The battery cell module includes a containment shell, a partition plate for dividing the containment shell into a plurality of containment cavities, and a plurality of electrode groups located in the containment shell, wherein the electrode groups are abutted against the partition plate and the containment shell, the partition plate is made of heat-conducting material, a flow channel is integrated in the partition plate, the flow channel is arranged adjacent to all the electrode groups, and the two ends of the flow channel are a liquid inlet and a liquid outlet.

2. The battery cell module according to claim 1, characterized in that: The liquid inlet and the liquid outlet protrude outside the receiving shell, and the liquid inlet and the liquid outlet are located at the same end of the receiving shell.

3. The battery cell module according to claim 1, characterized in that: The pole piece groups are divided into two rows, the partition plate comprises a transverse partition plate arranged between the two rows of the pole piece groups, and the flow channel is integrated in the transverse partition plate.

4. The battery cell module according to claim 3, characterized in that: The battery module also includes two temperature collection components, each of which has a collection portion and a connection portion. The collection portion is integrated in the receiving shell on both sides. Each of the collection portions is arranged adjacent to a row of electrode groups. The receiving shell is made of heat-conducting material.

5. The battery cell module according to claim 4, characterized in that: Along the height direction, the temperature collecting component is arranged in the middle of the receiving shell.

6. The battery cell module according to claim 4, characterized in that: The connecting portion is connected to the collecting portion and is located outside the receiving shell.

7. The battery cell module according to claim 1, characterized in that: Each of the electrode sets includes a positive electrode and a negative electrode, and the battery core module also includes a positive electrode collector connecting the positive electrodes of multiple electrode sets and a negative electrode collector connecting the negative electrodes of multiple electrode sets.

8. The battery cell module according to claim 7, characterized in that: The battery cell module also includes an injection molded cover for sealing the electrode group in the housing shell, and a positive electrode platform and a negative electrode platform formed on the injection molded cover. The positive electrode platform and the negative electrode platform are electrically connected to the positive electrode collector and the negative electrode collector respectively.

9. The battery cell module according to claim 1, characterized in that: The receiving shell is made of metal material.

10. A battery module, characterized in that: The battery module comprises the battery cell module as described in any one of claims 1-9.

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