Battery system, energy storage system and vehicle

Abstract

The utility model relates to the field of batteries, and discloses a battery system, an energy storage system and a vehicle. A battery system includes: a cooling plate; the battery unit is arranged on the cooling plate, and the battery unit is connected with the cooling plate through heat-conducting glue; the side plates are arranged on the two sides, in the first direction, of the battery units and comprise supporting plate parts and pressing plate parts, the supporting plate parts are arranged on one sides of the battery units and connected with the cooling plates, and the pressing plate parts are connected with the supporting plate parts and abut against the surfaces, away from the cooling plates, of the battery units; the supporting plate parts of the side plates are connected with the cooling plate, and the pressing plate parts of the side plates are connected with the supporting plate parts and abut against the surfaces, deviating from the cooling plate, of the battery units, so that the battery units can be pressed on the cooling plate, the acting force between the battery units and the cooling plate can be increased, and the tightness between the battery units and the cooling plate is improved; therefore, the heat-conducting glue can be uniformly distributed on the contact surface of the battery unit and the cooling plate under the extrusion action of the battery unit.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to battery systems, energy storage systems, and vehicles. Background Technology

[0002] With the increasing popularity of electric vehicles and energy storage systems, the requirements for the thermal management system of battery systems are becoming more and more stringent. In order to ensure that the battery system does not overheat during operation, a cooling plate is usually added to the battery system. This cooling plate is in contact with the battery pack in the battery system and connected to the external cooling system. It removes the heat from the battery pack through the circulation of liquid or gas. At the same time, the battery pack can also be heated by introducing high-temperature liquid or gas into the cooling plate.

[0003] In related technologies, a battery pack includes two end plates arranged opposite each other, two side plates arranged opposite each other, and battery cells containing multiple batteries. The two end plates and two side plates are fixedly connected to form a frame structure, and the battery cells are fixed inside the frame structure. Fixing holes are provided on the end plates of the battery pack, and the battery pack is fixed to a fixing beam inside the battery pack housing by fasteners. The battery cells in the battery pack contact a cooling plate inside the battery pack. The contact between the battery cells and the cooling plate is typically achieved using thermally conductive adhesive to increase the thermal contact area between the battery and the cooling plate, thereby improving heat dissipation efficiency.

[0004] However, in related technologies, the tightness between the battery cell and the cooling plate is poor, which can easily lead to uneven distribution of thermally conductive adhesive between the battery and the cooling plate, affecting the heat transfer effect between the battery cell and the cooling plate. Utility Model Content

[0005] In view of this, the present invention provides a battery system, an energy storage system, and a vehicle to solve or improve the problem of poor tightness between the battery and the cooling plate, which leads to uneven distribution of thermally conductive adhesive between the battery and the cooling plate.

[0006] In a first aspect, this utility model provides a battery system, comprising:

[0007] Cooling plate;

[0008] A battery cell is disposed on the cooling plate, and the battery cell is connected to the cooling plate by thermally conductive adhesive.

[0009] Side plates are disposed on both sides of the battery cell along a first direction. The side plates include a support plate portion and a pressing plate portion. The support plate portion is disposed on one side of the battery cell along the first direction. The support plate portion is connected to the cooling plate. The pressing plate portion is connected to the support plate portion and abuts against the surface of the battery cell away from the cooling plate.

[0010] In one alternative embodiment, the side plate further includes a connecting plate portion connected to the surface of the support plate portion opposite to the battery cell, the connecting plate portion being angled to the support plate portion, and the support plate portion being connected to the cooling plate portion via the connecting plate portion.

[0011] In one alternative embodiment, the side plate further includes a stiffening plate portion that connects the support plate portion and the connecting plate portion.

[0012] In one optional embodiment, the battery cell includes two battery columns arranged side by side along a first direction, each battery column including a plurality of batteries arranged along a second direction, each of the two battery columns having a corresponding side plate on its opposite side, and the pressing plate extending along the second direction and abutting against each battery in the battery column.

[0013] In one alternative embodiment, the battery system further includes a heating assembly disposed between two battery columns of the battery array, the heating assembly being used to heat the battery cells.

[0014] In one alternative embodiment, the battery system further includes a cooling assembly disposed on the side of the support plate near the battery cell, the cooling assembly being in thermal contact with the battery cell.

[0015] In one alternative embodiment, both the cooling plate and the cooling assembly are direct cooling plates.

[0016] In one alternative embodiment, the battery system further includes an end plate disposed at at least one end of the battery cell along a second direction and abutting against the battery cell, the end plate being detachably connected to the cooling plate;

[0017] And / or, the support plate portion is detachably connected to the cooling plate.

[0018] Secondly, this utility model also provides an energy storage system, including the battery system described above.

[0019] Thirdly, this utility model also provides a vehicle including the battery system described above.

[0020] The battery system provided by this utility model has a side plate support plate connected to a cooling plate, and a side plate clamping plate connected to the support plate and abutting against the surface of the battery cell facing away from the cooling plate. This presses the battery cell firmly onto the cooling plate. On the one hand, this increases the force between the battery cell and the cooling plate, improving their tightness and allowing the thermally conductive adhesive to be evenly distributed on the contact surface between the battery cell and the cooling plate under the pressure of the battery cell. On the other hand, it improves the connection strength between the battery cell and the cooling plate, preventing battery cell movement and ensuring the stability of the battery cell during use.

[0021] The energy storage system and vehicle provided by this utility model, since they include the battery system provided by this utility model, also include all the advantages of the battery system mentioned above. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is an exploded view of the battery system provided in the embodiments of this utility model;

[0024] Figure 2 This is a schematic diagram showing the connection relationship between the battery unit, the side plate, and the end plate provided in this embodiment of the utility model.

[0025] Figure 3 This is a schematic diagram of the side plate provided in the embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the cooling component provided in the embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Cooling plate; 2. Battery unit; 201. Battery row; 2011. Battery; 3. Side plate; 301. Support plate; 302. Pressing plate; 303. Connecting plate; 304. Rib plate; 4. End plate; 5. Heating assembly; 6. Cooling assembly; 7. Housing. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In related technologies, the clamping force between the battery and the cooling plate is usually provided by the weight of the battery, which means that the clamping force between the battery and the cooling plate is relatively small. This results in poor tightness between the battery and the cooling plate, which can easily lead to uneven distribution of thermally conductive adhesive between the battery and the cooling plate, affecting the heat transfer effect.

[0031] To address or improve the problem of poor adhesion between the battery and the cooling plate, which leads to uneven distribution of thermally conductive adhesive between the battery and the cooling plate, this utility model provides a battery system, an energy storage system, and a vehicle.

[0032] The following is combined with Figures 1 to 4 This describes the battery system provided in the embodiments of the present invention.

[0033] Specifically, the battery system includes a cooling plate 1, a battery cell 2, and a side plate 3.

[0034] The cooling plate 1 can be configured as a direct-cooling plate, meaning that the cooling plate 1 has a flow channel for the heat exchange medium to circulate. The heat exchange medium directly enters the cooling plate 1 for heat exchange, which can reduce the use of components such as water pumps and improve the cooling capacity of the cooling plate 1. When this battery system is used in a vehicle, it can be connected to the vehicle's refrigeration system to perform thermal management of the battery cells through the vehicle's heat exchange medium. Alternatively, the cooling plate 1 can also be configured as a water-cooling plate.

[0035] Battery cell 2 is mounted on cooling plate 1. Optionally, battery cell 2 includes multiple batteries 2011. Battery cell 2 is connected to cooling plate 1 via thermally conductive adhesive.

[0036] Side plates 3 are disposed on both sides of the battery cell 2 along the first direction. (Referring to...) Figure 1 and Figure 2 As shown, the first direction is direction a in the figure. The side plate 3 includes a support plate portion 301 and a clamping plate portion 302.

[0037] The support plate portion 301 is disposed on one side of the battery unit 2 along the first direction and is connected to the cooling plate 1. The clamping plate portion 302 is connected to the support plate portion 301 and abuts against the surface of the battery unit 2 away from the cooling plate 1, so as to clamp the battery unit 2 between the clamping plate portion 302 and the cooling plate 1.

[0038] In this embodiment, the support plate portion 301 of the side plate 3 is connected to the cooling plate 1, and the pressing plate portion 302 of the side plate 3 is connected to the support plate portion 301 and abuts against the surface of the battery unit 2 away from the cooling plate 1, thereby pressing the battery unit 2 onto the cooling plate 1.

[0039] In this way, on the one hand, the interaction force between battery cell 2 and cooling plate 1 can be increased, improving the tightness between them and allowing the thermally conductive adhesive to be evenly distributed on the contact surface between battery cell 2 and cooling plate 1 under the pressure of battery cell 2. On the other hand, it can improve the connection strength between battery cell 2 and cooling plate 1, preventing the battery 2011 in battery cell 2 from shaking and ensuring the stability of battery cell 2 during use.

[0040] Secondly, by arranging the cooling plate 1 at the bottom of the battery cell 2, the battery cell 2 can be cooled down, preventing it from overheating. Additionally, it is understood that the heat exchange medium in the cooling plate 1 can also be a high-temperature medium to heat the battery cell 2, thereby allowing the battery cell 2 to maintain its performance in low-temperature environments.

[0041] In some embodiments of this invention, the support plate portion 301 is detachably connected to the cooling plate 1. In this embodiment, the detachable connection between the support plate portion 301 and the cooling plate 1 facilitates the removal of the side plate 3 from the cooling plate 1. For example, if the battery 2011 in the battery unit 2 malfunctions, the side plate 3 can be removed to release the pressure of the clamping plate portion 302 on the battery unit 2, facilitating the disassembly or repair of the battery unit 2. Optionally, the support plate portion 301 can be detachably connected to the cooling plate 1 via threaded fasteners.

[0042] refer to Figure 1 and Figure 2 As shown, in some embodiments of this utility model, side plates 3 are provided on both sides of the battery unit 2. In this embodiment, by providing side plates 3 on both sides of the battery unit 2, on the one hand, the side plates 3 on both sides can press the two battery rows 201 of the battery unit 2 in a one-to-one correspondence; on the other hand, the side plates 3 on both sides can position or clamp the battery unit 2 in the first direction, preventing the battery unit 2 from moving or shaking in the first direction.

[0043] In some embodiments provided by this utility model, the battery system further includes an end plate 4, which is disposed at at least one end of the battery cell 2 along the second direction and abuts against the battery cell 2. The end plate 4 is detachably connected to the cooling plate 1. (Referring to...) Figure 1 and Figure 2 As shown, the second direction is direction b in the figure. Optionally, the end plate 4 can be detachably connected to the cooling plate 1 via threaded fasteners. For example, as... Figure 1 and Figure 2 As shown, the end plate 4 is vertically arranged and abuts against the end face of the battery unit 2. The threaded fastener passes through the end plate 4 in the vertical direction and is threadedly connected to the cooling plate 1 to fix the end plate 4 to the cooling plate 1.

[0044] In some embodiments of this utility model, end plates 4 are provided at both ends of the battery unit 2. In this embodiment, by providing end plates 4 at both ends of the battery unit 2, the end plates 4 at both ends can position or clamp the battery unit 2 in the second direction, preventing the battery unit 2 from moving or shaking in the second direction. In other embodiments, an end plate 4 can be provided at one end of the battery unit 2, and the other end of the battery unit 2 can abut against a structure such as a crossbeam in the battery system.

[0045] In this embodiment, the support plate 301 is disposed on one side of the battery unit 2, and the support plate 301 can limit the battery unit 2 in a first direction. The end plate 4 is disposed at one end of the battery unit 2, and can limit the battery unit 2 in a second direction. The first direction and the second direction intersect or are perpendicular to each other, thereby restricting the battery unit 2 to a preset position on the cooling plate 1 by the end plate 4 and the support plate 301, preventing the battery unit 2 from moving or shaking on the surface of the cooling plate 1. By detachably connecting both the end plate 4 and the side plate 3 to the cooling plate 1, it is easy to remove the end plate 4 and the side plate 3 from the cooling plate 1. For example, when the battery 2011 in the battery unit 2 malfunctions, both the end plate 4 and the side plate 3 can be removed to release the pressure of the end plate 4 and the clamping plate 302 on the battery unit 2, so as to facilitate the disassembly or repair of the battery unit 2.

[0046] In some embodiments provided by this utility model, at least two battery cells 2 are provided on the cooling plate 1, and each battery cell 2 is provided with a corresponding side plate 3 and end plate 4. This arrangement can make full use of the installation space of the battery system and improve the energy storage capacity of the battery system.

[0047] Furthermore, each battery unit 2 has a side plate 3 on both sides and an end plate 4 at both ends.

[0048] In some embodiments provided by this utility model, the side plate 3 further includes a connecting plate portion 303.

[0049] The connecting plate portion 303 is connected to the surface of the support plate portion 301 that faces away from the battery cell 2. For example, the connecting plate portion 303 can be welded to the support plate portion 301. The connecting plate portion 303 is set at an angle to the support plate portion 301. For example, the connecting plate portion 303 can be perpendicular to the support plate portion 301. The support plate portion 301 is connected to the cooling plate 1 through the connecting plate portion 303.

[0050] In this embodiment, the support plate portion 301 is connected to the cooling plate 1 through the connecting plate portion 303, and the connecting plate portion 303 is set at an angle to the support plate portion 301. Therefore, the connecting plate portion 303 can fit against the cooling plate 1, thereby making the connection area between the connecting plate portion 303 and the cooling plate 1 larger, which in turn improves the connection strength and connection stability between the support plate portion 301 and the cooling plate 1.

[0051] Optionally, the connecting plate portion 303 is detachably connected to the cooling plate 1 by a threaded fastener. For example, the connecting plate portion 303 is provided with a through hole for the threaded fastener to pass through, and the threaded fastener passes through the through hole and is threadedly connected to the cooling plate 1 to fix the connecting plate portion 303 to the cooling plate 1.

[0052] In some embodiments provided by this utility model, the side plate 3 further includes a stiffening plate portion 304, which connects the support plate portion 301 and the connecting plate portion 303. For example, the stiffening plate portion 304 is welded to the support plate portion 301 and the connecting plate portion 303 respectively.

[0053] In this embodiment, the support plate portion 301 and the connecting plate portion 303 are connected by the stiffening plate portion 304, which can improve the connection strength and connection stiffness between the support plate portion 301 and the connecting plate portion 303, avoid the problem of deformation of the connecting plate portion 303, and improve the structural stability of the side plate 3.

[0054] In some embodiments of this utility model, the number of connecting plate portions 303 is set to at least two, and the at least two connecting plate portions 303 are arranged sequentially along the extending direction of the support plate portion 301. In this embodiment, by providing at least two connecting plate portions 303 connected to the cooling plate 1, the connection strength between the side plate 3 and the cooling plate 1 can be improved, ensuring the stability of the connection between the side plate 3 and the cooling plate 1.

[0055] refer to Figure 2 As shown, in some embodiments provided by this utility model, the battery unit 2 includes two battery columns 201, which are arranged side by side. For example Figure 2 As shown, two battery columns 201 are arranged side by side along a first direction, and the battery column 201 includes a plurality of batteries 2011 arranged along a second direction, for example, the first direction and the second direction are perpendicular.

[0056] Each of the two battery rows 201 has a corresponding side plate 3 on its opposite side. The clamping plate portion 302 extends along the second direction and abuts against each battery 2011 in the battery row 201.

[0057] In this embodiment, the battery cell 2 includes two battery columns 201 arranged in parallel. This parallel arrangement allows for maximizing the use of available volume in a limited space, thereby enabling the storage of more energy in the same volume.

[0058] By arranging side plates 3 on opposite sides of the two battery rows 201, and by having the pressing plate 302 abut against each battery 2011 in the corresponding battery row 201, it is possible to ensure good tightness between each battery 2011 and the cooling plate 1, so that the thermally conductive adhesive can be evenly distributed on the contact surface between each battery 2011 and the cooling plate 1 under the squeezing action of the battery 2011.

[0059] refer to Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the battery system further includes a heating component 5. The heating component 5 is provided between the two battery columns 201 of the battery cell 2, and is used to heat the battery cell 2.

[0060] In this embodiment, by providing a heating component 5 between the two battery columns 201 of the battery cell 2, each battery 2011 in the battery column 201 can be heated by the heating component 5 under low temperature conditions, so that the battery system can operate normally at low temperatures and reduce the impact of low temperature on the performance of the battery system.

[0061] Furthermore, by placing the heating component 5 between the two battery columns, it is possible to heat both battery columns 201 simultaneously, thereby improving heating efficiency. On the other hand, it also allows the heating component 5 to be better secured, preventing it from falling off and burning dry, which could pose a safety hazard.

[0062] Optionally, the heating component 5 can be configured as an electric heating device. For example, the electric heating device can be configured as a heating film. The heating film itself is thin and light, and occupies less space. Therefore, it can be arranged more conveniently and flexibly between the two battery rows 201. Moreover, the heating film has good flexibility, so it can better fit the surface of the battery row 201, thereby providing a better heating effect for the battery row 201.

[0063] In some embodiments provided by this utility model, the battery system further includes a cooling component 6.

[0064] The cooling component 6 is disposed on the side of the support plate portion 301 near the battery cell 2, and the cooling component 6 is in thermally conductive contact with the battery cell 2. The cooling component 6 can be used to cool or heat the battery cell 2.

[0065] In this embodiment, the cooling component 6 is disposed on the side of the battery cell 2 to cool or heat the side of the battery cell 2, and the cooling plate 1 is disposed on the bottom of the battery cell 2 to cool or heat the bottom of the battery cell 2. That is, the cooling component 6 and the cooling plate 1 work together to cool or heat the battery cell 2, thereby increasing the heat exchange area of ​​the battery cell 2 and providing a better cooling or heating effect for the battery cell 2.

[0066] Optionally, the cooling assembly 6 can be configured as a direct cooling plate or a water-cooled plate. For example, the cooling assembly 6 can be disposed between the support plate portion 301 and the battery cell 2, and connected to the battery cell 2 via thermally conductive adhesive to improve the heat exchange effect between the cooling assembly 6 and the battery cell 2. When the cooling assembly 6 is configured as a direct cooling plate, the cooling assembly 6 can also be directly connected to the vehicle's cooling system.

[0067] Alternatively, the cooling assembly 6 can be integrated into the support plate portion 301. For example, a cooling channel for coolant or coolant to flow can be provided on the support plate portion 301 of the side plate 3, so that the cooling assembly 6 is formed on the side of the support plate portion 301 near the battery cell 2.

[0068] refer to Figure 1 and Figure 2 As shown, in some embodiments provided by this utility model, side plates 3 are provided on both sides of the battery unit 2. Furthermore, each side plate 3 on both sides of the battery unit 2 is provided with a corresponding cooling assembly 6, thereby improving the cooling effect on the battery unit 2.

[0069] refer to Figure 1 As shown, in some embodiments provided by this utility model, the battery system further includes a housing 7. The cooling plate 1, battery cell 2, side plate 3, and end plate 4 are all disposed within the housing 7.

[0070] In this embodiment, the housing 7 provides physical protection for the internal cooling plate 1, battery cell 2, side plate 3, and end plate 4, preventing damage to these sensitive components from external impacts or collisions. The housing 7 can be designed as a sealed structure, which helps maintain a constant internal temperature, reduces the influence of the external environment, and thus optimizes the effectiveness of the thermal management system. The housing 7 also prevents moisture and dust from entering the interior, thereby extending the lifespan of the battery system.

[0071] This utility model also provides an energy storage system.

[0072] Specifically, the energy storage system includes the battery system described above. For example, the energy storage system also includes a battery rack on which the battery system is placed.

[0073] It should be noted that energy storage systems include battery systems, and therefore include all the advantages of battery systems mentioned above, so this will not be elaborated further.

[0074] This utility model also provides a vehicle in its embodiments.

[0075] Specifically, the vehicle includes the battery system described above.

[0076] It should be noted that the vehicle includes a battery system, and therefore includes all the advantages of the battery system mentioned above, so this will not be elaborated further.

[0077] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery system, characterized in that, include: Cooling plate (1); A battery cell (2) is disposed on the cooling plate (1), and the battery cell is connected to the cooling plate (1) by thermally conductive adhesive; Side plates (3) are disposed on both sides of the battery unit (2) along a first direction. The side plates (3) include a support plate portion (301) and a pressing plate portion (302). The support plate portion (301) is disposed on one side of the battery unit (2) along the first direction. The support plate portion (301) is connected to the cooling plate (1). The pressing plate portion (302) is connected to the support plate portion (301), and the pressing plate portion (302) abuts against the surface of the battery unit (2) away from the cooling plate (1).

2. The battery system according to claim 1, characterized in that, The side plate (3) also includes a connecting plate portion (303), which is connected to the surface of the support plate portion (301) away from the battery unit (2). The connecting plate portion (303) is set at an angle to the support plate portion (301), and the support plate portion (301) is connected to the cooling plate (1) through the connecting plate portion (303).

3. The battery system according to claim 2, characterized in that, The side plate (3) further includes a stiffening plate portion (304), which connects the supporting plate portion (301) and the connecting plate portion (303).

4. The battery system according to claim 1, characterized in that, The battery unit (2) includes two battery columns (201), which are arranged side by side along a first direction. Each battery column includes a plurality of batteries (2011) arranged along a second direction. Each of the two battery columns (201) is provided with a corresponding side plate (3) on the side opposite to each other. The pressing plate (302) extends along the second direction and abuts against each battery (2011) in the battery column (201).

5. The battery system according to claim 4, characterized in that, The battery system further includes a heating component (5), which is provided between the two battery columns (201) of the battery cell (2) and is used to heat the battery cell (2).

6. The battery system according to claim 1, characterized in that, The battery system also includes a cooling assembly (6), which is disposed on the side of the support plate (301) near the battery cell (2) and is in thermal contact with the battery cell (2).

7. The battery system according to claim 6, characterized in that, Both the cooling plate (1) and the cooling assembly (6) are direct cooling plates.

8. The battery system according to claim 1, characterized in that, The battery system further includes an end plate (4), which is disposed at at least one end of the battery cell (2) along the second direction and abuts against the battery cell (2), and the end plate (4) is detachably connected to the cooling plate (1); And / or, the support plate portion (301) is detachably connected to the cooling plate (1).

9. An energy storage system, characterized in that, Includes the battery system as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the battery system as described in any one of claims 1-8.

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