Battery assembly and electric equipment

Abstract

The utility model discloses a battery assembly and electric equipment. The battery assembly comprises a box body, a battery cell and a conveying channel. A plurality of partition plates are arranged in the box body, the partition plates are sequentially arranged in the first direction and divide an inner cavity of the box body into a plurality of cavities, and flow channels are formed in the side wall, in the first direction, of the box body and in the partition plates; the battery cell is mounted in the cavity, and the battery cell is in contact with at least one of the side wall and the partition plate; the conveying channel is arranged in the box body in a penetrating mode and used for conveying cooling liquid to the flow channel. According to the battery assembly and the electric equipment, the problem that the use performance and the service life of the battery pack are difficult to guarantee due to the fact that an existing battery pack is cooled in an air cooling mode can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, and in particular, to a battery assembly and an electrical equipment. Background Art

[0002] Currently, a battery pack is composed of a plurality of single cells connected in series and parallel according to the load demand to form a battery module, and then a plurality of battery modules are connected in series and parallel to form a battery pack with a certain voltage and capacity. The battery pack is placed inside a sealed box. The more the number of cells in the battery pack, the greater the heat generated during the charging and discharging process, which leads to an increase in the overall temperature of the battery pack, thereby affecting the performance and service life of the battery pack, and even posing a safety hazard.

[0003] Currently, most battery packs adopt an air-cooling method. The air-cooling method has relatively poor stability and efficiency, and it is difficult to ensure the stable use of the battery pack. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a battery assembly and an electrical equipment, so as to at least solve the problem that the existing battery pack is cooled by an air-cooling method, and it is difficult to ensure the performance and service life of the battery pack.

[0005] According to one aspect of the utility model, a battery assembly is provided, including:

[0006] A box body, wherein a plurality of partition boards are arranged inside the box body. The plurality of partition boards are arranged in sequence along a first direction and divide the inner cavity of the box body into a plurality of cavities. Flow channels are arranged on the side wall of the box body along the first direction and inside the partition boards;

[0007] A battery cell, which is installed in the cavity, and the battery cell is in contact with at least one of the side wall and the partition board;

[0008] A conveying channel, which penetrates through the box body for conveying a coolant to the flow channel.

[0009] Further, the conveying channel extends along the first direction and penetrates through the side wall and the partition board.

[0010] Further, there are a plurality of the conveying channels, and the plurality of conveying channels are arranged at intervals along the height direction of the box body.

[0011] Further, a plurality of the flow channels are arranged inside both the side wall and the partition board. Each flow channel extends along a second direction of the box body, and the plurality of flow channels are arranged in sequence along the height of the box body.

[0012] Further, on the same partition or the same side wall, a plurality of the flow channels are separated into a plurality of regions in the height direction of the box body by first ribs, and the plurality of regions communicate with the plurality of conveying channels in a one-to-one correspondence, and the flow channels in each region communicate with the conveying channels in the corresponding region.

[0013] Further, along the second direction, each of the flow channels includes a first end and a second end, and the first ends of the plurality of flow channels located in the same region communicate with each other, and the second ends of the plurality of flow channels located in the same region communicate with each other.

[0014] Further, a first communication channel is provided inside the partition, the first communication channel extends in the height direction of the box body, the first ends of the flow channels in the same region are all communicated with the first communication channel, and the conveying channel is communicated with the first communication channel.

[0015] Further, a second communication channel is provided inside the partition, the second communication channel extends in the height direction of the box body, and the second ends of the flow channels in the same region are all communicated with the second communication channel;

[0016] On the same partition or the same side wall, the second communication channels in different regions communicate with each other.

[0017] Further, the battery cell is in surface contact with the partition; and / or,

[0018] The battery cell is in surface contact with the side wall.

[0019] On the other hand, the present application further provides an electrical device, and the electrical device includes the above battery assembly.

[0020] In the present utility model, when heat dissipation of the battery assembly is required, a coolant can be conveyed into the conveying channel, and the coolant can be water or other cooling media. After the coolant enters the conveying channel, it can flow into the side wall of the box body and the flow channels in the partition for heat dissipation. Since the battery cell located in the cavity is in contact with at least one of the side wall and the partition, that is, heat exchange can be achieved between the battery cell and the side wall and the partition. With the continuous circulation of the coolant, it is convenient to quickly dissipate heat from the battery cell, thereby ensuring the stability and reliability of the operation of the battery cell to a certain extent, and finally achieving the purpose of prolonging the service life of the battery assembly in this embodiment. Description of the Drawings

[0021] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0022] Figure 1 A three-dimensional structure diagram of the battery assembly disclosed in the embodiment of the present utility model;

[0023] Figure 2 A top view of the battery assembly disclosed in the embodiment of the present utility model;

[0024] Figure 3 is Figure 2 the A-A cross-sectional view in

[0025] Among them, the above-mentioned drawings include the following reference numerals:

[0026] 10, box body; 11, side wall; 20, partition; 30, cavity; 40, battery cell; 50, conveying channel; 60, flow channel; 61, first end; 62, second end; 70a, first region; 70b, second region; 80, first communication channel; 90, second communication channel; 100, first rib. Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0029] Unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] See Figures 1 to 3As shown, according to an embodiment of the present application, a battery assembly is provided, which includes a box body 10, battery cells 40, and a delivery channel 50.

[0031] Among them, a number of partition plates 20 are arranged inside the box body 10, and the number of partition plates 20 are arranged in sequence along the first direction (i.e., Figure 1 the X direction in it) and divide the inner cavity of the box body 10 into a plurality of cavities 30. Flow channels 60 are arranged in the side wall 11 of the box body 10 along the first direction and inside the partition plates 20; the battery cells 40 include a number of pieces, and the battery cells 40 are arranged in the cavities 30 and are in contact with at least one of the side wall 11 of the box body 10 and the partition plates 20; the delivery channel 50 penetrates through the box body 10 for delivering coolant to the flow channels 60.

[0032] When heat dissipation is required for the battery assembly, coolant can be delivered into the delivery channel 50, and the coolant can be water or other cooling media. After the coolant enters the delivery channel 50, it can flow into the flow channels 60 in the side wall 11 of the box body 10 and inside the partition plates 20 for heat dissipation. Since the battery cells 40 located in the cavities 30 are in contact with at least one of the side wall 11 and the partition plates 20, that is, heat exchange can be realized between the battery cells 40 and the side wall 11 and the partition plates 20. With the continuous circulation of the coolant, it is convenient to quickly dissipate heat from the battery cells 40, and thus the stability and reliability of the operation of the battery cells 40 can be guaranteed to a certain extent, and finally the purpose of extending the service life of the battery assembly in this embodiment can be achieved.

[0033] Optionally, the box body 10 in this embodiment can be a rectangular box body, or a square box body or other special-shaped box bodies. As long as it is other deformation methods under the concept of the present application, they are all within the protection scope of the present application. The Figure 1 figure in the present application Figure 1 shows the case when the box body 10 is a rectangular box body. During actual installation, the delivery channel 50 extends along the first direction (i.e., Figure 1 the X direction in it) and penetrates through the side wall 11 of the box body 10 and the partition plates 20. In this way, it is convenient to deliver the coolant into the flow channels 60 inside the side wall 11 and the partition plates 20. Exemplarily, the delivery channel 50 in this embodiment can be a metal pipe, or it can be a plastic pipe, etc. After the delivery channel 50 is installed, the inlet and outlet of the delivery channel 50 are both located outside the box body 10, which is convenient for adding and discharging the coolant.

[0034] In this embodiment, one battery cell 40 can be arranged in one cavity 30, or two battery cells 40 can be arranged. In this way, it can be ensured that the battery cells 40 located in the cavity 30 can be in contact with at least one of the side wall 11 of the box body 10 and the partition plates 20, and thus it is convenient to effectively dissipate heat from the battery cells 40. That is to say, in order to facilitate effective heat dissipation of the battery cells 40 inside the battery assembly, at most two battery cells 40 are arranged in each cavity 30.

[0035] In this embodiment, the battery cell 40 is in surface-to-surface contact with the partition 20 and / or the side wall 11 of the box body 10. In this way, the heat exchange area between the battery cell 40, the partition 20, and the box body 10 can be increased. Exemplarily, the battery cell 40 in this embodiment is of a cuboid structure. When actually installing the battery cell 40, the side with the largest outer area of the battery cell 40 is in contact with the partition 20 or the side wall 11 of the box body 10. In this way, the contact area between the battery cell 40, the partition 20, and the side wall 11 can be increased as much as possible, facilitating the rapid heat dissipation of the battery cell 40.

[0036] Combined with Figures 1 to 3 As shown, there are multiple conveying channels 50 in this embodiment, and the multiple conveying channels 50 are arranged at intervals along the height direction of the box body 10. Exemplarily, the conveying channels 50 can be two, three, or more than three. The Figure 1 shows the case where there are two conveying channels 50. In this embodiment, by setting the conveying channels 50 to be multiple and making the multiple conveying channels 50 extend along the height direction of the box body 10, in this way, the coolant can enter the flow channels 60 on the partition 20 and the side wall 11 from different positions, thereby facilitating the cooling of different parts of the battery cell 40.

[0037] Furthermore, a plurality of flow channels 60 are provided inside the side wall 11 of the box body 10 along the first direction and the partition 20, and each flow channel 60 extends along the second direction of the box body 10 ( Figure 1 the Y direction in

[0038] i.e., the width direction of the box body), and the multiple flow channels 60 are arranged in sequence along the height of the box body 10. That is to say, the side wall 11 of the box body 10 and the partition 20 in this embodiment are stacked along the height direction of the box body 10. In this way, after the conveying channel 50 conveys the coolant into the side wall 11 and the partition 20, the coolant can flow in layers along the flow channels 60 in the height direction of the side wall 11 and the partition 20. The coolant can spread out in the side wall 11 and the partition 20, increasing the heat exchange area between the side wall 11 and the partition 20 and the battery cell 40, facilitating the rapid heat dissipation of the battery cell 40. Figures 1 to 3 As shown, there are two conveying channels 50 in this embodiment. Correspondingly, the multiple flow channels 60 are separated into two regions by the first rib 100. For easy distinction, these two regions are respectively labeled as the first region 70a and the second region 70b. Among them, a plurality of flow channels 60 are provided in both the first region 70a and the second region 70b. In the present application,Figure 3 The situation where five flow channels 60 are provided in both the first region 70a and the second region 70b is shown. In this embodiment, a plurality of flow channels 60 are separated into multiple regions in the height direction of the box body 10 by the first rib 100. After the coolant is transported to the side wall 11 and the partition 20 through the transport channel 50, it can, to a certain extent, avoid the situation that the coolant only flows into the flow channels 60 at the bottom of the side wall 11 and the partition 20 under the action of its own gravity, and it is difficult for the coolant to enter the upper flow channels 60. That is to say, the structure of this embodiment can ensure that after the coolant enters the side wall 11 and the partition 20, it can enter each flow channel 60 more evenly, thereby increasing the cooling area of the side wall 11 and the partition 20 and facilitating the effective cooling of the battery cell 40.

[0039] Further, along the second direction of the box body 10 (i.e., Figure 1 the Y direction shown in the figure), each flow channel 60 includes a first end 61 and a second end 62. The first ends 61 of a plurality of flow channels 60 located in the same region are interconnected, and the second ends 62 of a plurality of flow channels 60 located in the same region are interconnected. In this way, it is convenient to transport the coolant into a plurality of flow channels 60 in the same region through one transport channel 50, and the production and manufacturing costs in the battery assembly of the present application can be reduced to a certain extent.

[0040] For the convenience of connection, a first communication channel 80 is provided inside the partition 20 in this embodiment. The first communication channel 80 extends along the height direction of the box body 10. The first ends 61 of the flow channels 60 in the same region are all connected to the first communication channel 80, and the transport channel 50 is connected to the first communication channel 80. With this arrangement, it is convenient to transport the coolant into a plurality of flow channels 60 in the same region through one transport channel 50, and the production and manufacturing costs in the battery assembly of the present application can be reduced to a certain extent.

[0041] Further, a second communication channel 90 is provided inside the partition 20. The second communication channel 90 extends along the height direction of the box body 10. The second ends 62 of the flow channels 60 in the same region are all connected to the second communication channel 90; on the same partition 20 or the same side wall 11 of the box body 10, the second communication channels 90 in different regions are interconnected. With this arrangement, the coolants entering different regions can be mixed with each other, facilitating the circulation of the coolant and thus facilitating the rapid heat dissipation of the battery cell 40.

[0042] Exemplarily, the partition 20 in this embodiment can be made of materials with relatively high thermal conductivity such as aluminum plates and copper plates. In this way, the heat dissipation effect of the battery assembly in this embodiment can be improved to a certain extent. Of course, in other embodiments of the present application, the partition 20 can also be made of nanomaterials, and the nanomaterials can achieve the effect of preventing thermal runaway.

[0043] Furthermore, in order to improve the heat exchange efficiency between the separator 20 and the battery cell 40, and between the side wall 11 and the battery cell 40, a heat-conducting adhesive or the like can also be provided between the separator 20 and the battery cell 40, and between the side wall 11 and the battery cell 40 in this embodiment. As long as it is other deformation methods under the concept of this application, they are all within the protection scope of this application.

[0044] According to the above content, it can be known that the battery module of this application can at least achieve the following effects:

[0045] (1) In this application, the conveying channel for conveying the coolant is arranged on the box body to cool the large surface of the battery cell, and the cooling effect is good;

[0046] (2) The battery module of this application can realize the de-modularization setting, and there is a conveying channel section for every two battery cells, ensuring that each battery cell can be cooled by the large surface;

[0047] (3) The isolation board in this application is made of nano materials, and the effect of preventing thermal runaway can be achieved (each battery cell can obtain thermal spread protection and temperature reduction);

[0048] (4) Both the inlet and outlet of the conveying channel in this application are located outside the box body, which is convenient for the filling and discharging of the coolant.

[0049] On the other hand, this application also discloses an electrical device, and this electrical device includes the above-mentioned battery module. Therefore, this electrical device includes all the technical effects of the above-mentioned battery module. That is to say, in this embodiment, when the battery module needs to be cooled, coolant can be conveyed into the conveying channel 50, and the coolant can be water or other cooling media. After the coolant enters the conveying channel 50, it can flow into the side wall 11 of the box body 10 and the flow channel 60 in the separator 20 for heat dissipation. Since the battery cell 40 located in the cavity 30 is in contact with at least one of the side wall 11 and the separator 20, that is, heat exchange can be realized between the battery cell 40 and the side wall 11 and the separator 20. With the continuous circulation of the coolant, it is convenient to quickly cool the battery cell 40, and then the stability and reliability of the operation of the battery cell 40 can be guaranteed to a certain extent, and finally the purpose of improving the service life of the battery module and the electrical device in this embodiment can be achieved.

[0050] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0051] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0052] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery assembly, characterized in that: include: A box body (10), wherein a plurality of partitions (20) are arranged inside the box body (10), wherein the plurality of partitions (20) are arranged in sequence along a first direction and divide the inner cavity of the box body (10) into a plurality of cavities (30), and flow channels (60) are arranged on the side walls (11) of the box body (10) along the first direction and in the partitions (20); A battery cell (40), the battery cell (40) being installed in the cavity (30), the battery cell (40) being in contact with at least one of the side wall (11) and the partition (20); A delivery channel (50), wherein the delivery channel (50) is disposed through the box body (10) and is used for delivering cooling liquid to the flow channel (60).

2. The battery assembly according to claim 1, characterized in that: The conveying channel (50) extends along the first direction and penetrates the side wall (11) and the partition plate (20).

3. The battery assembly according to claim 2, characterized in that: There are a plurality of conveying channels (50), and the plurality of conveying channels (50) are arranged at intervals along the height direction of the box body (10).

4. The battery assembly according to claim 3, characterized in that: A plurality of flow channels (60) are provided inside the side wall (11) and the partition plate (20), each of the flow channels (60) extends along the second direction of the box body (10), and the plurality of flow channels (60) are arranged in sequence along the height of the box body (10).

5. The battery assembly according to claim 4, characterized in that: On the same partition (20) or the same side wall (11), the plurality of flow channels (60) are divided into a plurality of regions by a first rib (100) along the height direction of the box body (10); the plurality of regions are connected to the plurality of conveying channels (50) in a one-to-one correspondence, and the flow channels (60) in each region are connected to the conveying channels (50) in the corresponding region.

6. The battery assembly according to claim 4, characterized in that: Along the second direction, each of the flow channels (60) comprises a first end (61) and a second end (62); the first ends (61) of the plurality of flow channels (60) located in the same area are interconnected; and the second ends (62) of the plurality of flow channels (60) located in the same area are interconnected.

7. The battery assembly according to claim 6, characterized in that: A first connecting channel (80) is provided inside the partition (20), the first connecting channel (80) extending in the height direction of the box body (10), the first ends (61) of the flow channels (60) in the same area are all connected to the first connecting channel (80), and the delivery channel (50) is connected to the first connecting channel (80).

8. The battery assembly according to claim 6, characterized in that: A second communication channel (90) is provided inside the partition (20), the second communication channel (90) extends along the height direction of the box body (10), and the second ends (62) of the flow channels (60) in the same area are all connected to the second communication channel (90); The second connecting channels (90) in different areas on the same partition plate (20) or the same side wall (11) are connected to each other.

9. The battery assembly according to any one of claims 1 to 8, characterized in that: The battery cell (40) is in surface contact with the separator (20); and / or, The battery core (40) is in surface contact with the side wall (11).

10. An electrical device, characterized in that: The electrical equipment comprises the battery assembly according to any one of claims 1 to 9.

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