Battery device and electric appliance

Abstract

The utility model discloses a kind of battery device and electric equipment, the battery device includes: heat exchange part and exhaust component, the exhaust component includes support, the support is equipped with exhaust passage, the heat exchange part with the support heat exchange. Therefore, by heat exchange between heat exchange part and support, when thermal runaway occurs in battery cell assembly, the temperature rise of support can be delayed, to avoid support melting, thereby preventing the support after melting blocks exhaust passage, improve the thermal safety of battery device.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a battery device and an electrical appliance. Background Technology

[0002] In related technologies, to ensure that gases can be smoothly discharged during the thermal diffusion process of the battery pack, an exhaust channel is set in the plastic bracket on one side of the module inside the pack. However, after thermal runaway, the battery cells in the pack will conduct heat to the plastic bracket, causing the plastic bracket to melt and potentially blocking the exhaust channel, preventing gases from being discharged smoothly, and thus causing the pack to catch fire or explode. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery device that prevents the support from melting and blocking the venting channel, thereby improving thermal safety.

[0004] The battery device according to an embodiment of the present invention includes: a heat exchanger; and an exhaust assembly, wherein the exhaust assembly includes a bracket, the bracket is provided with an exhaust channel, and the heat exchanger exchanges heat with the bracket.

[0005] According to the battery device of this utility model embodiment, by exchanging heat between the heat exchange component and the bracket, the temperature rise of the bracket can be delayed when thermal runaway occurs in the battery cell assembly, so as to avoid the bracket from melting. This prevents the melted bracket from blocking the exhaust channel and improves the thermal safety of the battery device.

[0006] According to some embodiments of the present invention, the battery device has a support with a receiving groove, and a portion of the heat exchange member extends into the receiving groove for heat exchange with the support.

[0007] The battery device according to some embodiments of the present invention further includes a cell assembly, wherein the heat exchanger exchanges heat with the cell assembly.

[0008] According to some embodiments of the present invention, the battery device includes a heat exchanger comprising a plate body and an additional tube. The plate body is provided with a first heat exchange channel, and the plate body exchanges heat with the battery cell assembly. The plate body is connected to the additional tube, and the additional tube is provided with a second heat exchange channel communicating with the first heat exchange channel. The additional tube extends into the receiving groove.

[0009] According to some embodiments of the present invention, in the battery device, the plate body is welded to the additional tube.

[0010] According to some embodiments of the present invention, the battery device is provided with a heat-conducting element in the receiving groove, and the heat-conducting element is filled between the outer peripheral wall of the additional tube and the side wall of the receiving groove.

[0011] According to some embodiments of the present invention, the heat-conducting element of the battery device is configured to evaporate upon heating to reduce the temperature of the support.

[0012] According to some embodiments of the present invention, the material of the thermal conductive element in the battery device is hydrogel.

[0013] The battery device according to some embodiments of the present invention further includes an exhaust pipe disposed in the exhaust channel to support the exhaust channel.

[0014] According to some embodiments of the present invention, in the vertical direction, the portion of the heat exchanger that exchanges heat with the bracket and the exhaust channel are arranged opposite each other.

[0015] According to some embodiments of the present invention, the battery device has an open groove on one side of the bracket along the horizontal direction to form the exhaust channel, and the exhaust pipe is disposed in the groove.

[0016] According to some embodiments of the present invention, the bottom wall of the groove is provided with a support rib, and the exhaust pipe is limited to the support rib to define a buffer space between the exhaust pipe and the bottom wall of the groove.

[0017] According to some embodiments of the present invention, the exhaust pipe of the battery device is constructed as a hollow square tube.

[0018] According to some embodiments of the present invention, the battery device further includes a temperature sensor mounted on the bracket and used to detect the temperature of the bracket.

[0019] According to some embodiments of the present invention, the battery device includes a heat exchanger having a heat exchange channel for accommodating a heat exchange medium, and the heat exchanger also having a regulating element for adjusting the flow rate of the heat exchange channel. The temperature sensor and the regulating element are electrically connected to the control module of the battery device. The control module is configured to control the regulating element to adjust the flow rate of the heat exchange medium based on the detection result of the temperature sensor.

[0020] According to some embodiments of the present invention, the battery device has a bracket with a snap-fit ​​part, and the temperature sensor is snap-fitted to the snap-fit ​​part.

[0021] The battery device according to some embodiments of the present invention further includes a housing and a cell assembly, wherein the heat exchanger is disposed on the housing to enclose and form a receiving cavity for accommodating the cell assembly, and the bracket is disposed between the end of the cell assembly and the side wall of the receiving cavity.

[0022] This utility model also proposes an electrical device.

[0023] The electrical equipment according to the embodiments of the present invention includes the battery device according to any of the above embodiments.

[0024] The electrical equipment and the battery device have the same advantages over the prior art, which will not be repeated here.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of a battery device according to an embodiment of the present utility model;

[0028] Figure 2 This is an installation diagram of the exhaust assembly according to an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of an exhaust assembly according to an embodiment of the present utility model;

[0030] Figure 4 This is an installation diagram of the heat exchanger and exhaust assembly according to an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of a bracket according to an embodiment of the present utility model.

[0032] Figure label:

[0033] Battery device 100;

[0034] 1. Housing; 11. Battery cell assembly; 2. Heat exchanger; 3. Plate body; 31. Additional pipe; 32.

[0035] Exhaust assembly 4; bracket 41; receiving groove 411; snap-fit ​​part 412; groove 413; support rib 414; exhaust pipe 42. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Hereinafter, with reference to the accompanying drawings, a battery device 100 according to an embodiment of the present invention will be described.

[0040] like Figures 1-5 As shown, the battery device 100 according to an embodiment of the present utility model includes: a heat exchanger 3 and an exhaust assembly 4. The exhaust assembly 4 includes a bracket 41, which is provided with an exhaust channel. The heat exchanger 3 exchanges heat with the bracket 41.

[0041] First, such as Figures 1-4 As shown, the battery device 100 includes a heat exchanger 3 and an exhaust assembly 4. The heat exchanger 3 can be configured to circulate a heat exchange medium, such as water or oil, or it can be configured as a cooling structure such as a semiconductor cooling chip. The exhaust assembly 4 includes a bracket 41, which is made of plastic. The bracket 41 is used to limit other components within the battery device 100. The bracket 41 has an exhaust channel that communicates with the outside of the battery device 100. When the battery device 100 experiences thermal runaway and generates high-temperature, high-pressure gas, the exhaust channel can vent the high-temperature, high-pressure gas to the outside of the battery device 100 to slow down the spread of thermal runaway and prevent the battery device 100 from exploding. It should be noted that the battery device 100 can be a separate battery pack or integrated into the vehicle chassis (CTC technology).

[0042] The heat exchanger 3 can be configured to exchange heat with the support 41 to reduce the temperature of the support 41. When thermal runaway occurs in the battery cell assembly 2 and high-temperature, high-pressure gas flows into the exhaust channel, the gas will heat the support 41. The heat exchanger 3 can delay the temperature rise of the support 41, slowing down or preventing its melting. This helps prevent the melted support 41 from blocking the exhaust channel, ensuring that the high-temperature, high-pressure gas in the containment cavity 11 can be discharged outwards as much as possible. Therefore, the probability of the battery device 100 exploding can be reduced, improving its thermal safety.

[0043] According to the battery device 100 of this utility model embodiment, by exchanging heat between the heat exchanger 3 and the bracket 41, the temperature rise of the bracket 41 can be delayed when thermal runaway occurs in the cell assembly 2, so as to avoid the bracket 41 from melting, thereby preventing the melted bracket 41 from blocking the exhaust channel and improving the thermal safety of the battery device 100.

[0044] In some embodiments of this utility model, such as Figures 3-4 As shown, the support 41 is provided with a receiving groove 411, which is open towards the heat exchanger 3. A portion of the heat exchanger 3 extends into the receiving groove 411 for heat exchange with the support 41. This increases the heat exchange area between the support 41 and the heat exchanger 3, improves the heat exchange efficiency of the heat exchanger 3, effectively reduces the temperature rise rate of the support 41 during thermal runaway of the cell assembly 2, and improves the thermal safety of the battery device 100.

[0045] In some embodiments of this utility model, such as Figures 1-2 As shown, the battery device 100 of this embodiment further includes a cell assembly 2, and a heat exchanger 3 exchanges heat with the cell assembly 2. Therefore, the heat exchanger 3 can be used to dissipate heat from both the support 41 and the cell assembly 2, simplifying the structure of the battery device 100 and improving its practicality.

[0046] In some embodiments of this utility model, the heat exchanger 3 includes a plate body 31 and an auxiliary tube 32. The plate body 31 is provided with a first heat exchange channel. The plate body 31 exchanges heat with the battery cell assembly 2. The plate body 31 is connected to the auxiliary tube 32. The auxiliary tube 32 is provided with a second heat exchange channel that communicates with the first heat exchange channel. The auxiliary tube 32 extends into the receiving groove 411.

[0047] For example, refer to Figures 3-4As shown, the heat exchanger 3 includes a plate body 31 and an auxiliary tube 32. The plate body 31 is flat and is attached to the side wall of the battery cell assembly 2. The plate body 31 has a first heat exchange channel that is connected to an external pipeline. The plate body 31 can exchange heat with the battery cell assembly 2 through the first heat exchange channel. At the same time, the auxiliary tube 32 can be located on the side of the plate body 31 facing the support 41. The plate body 31 is connected to the auxiliary tube 32. The auxiliary tube 32 has a second heat exchange channel that is connected to the first heat exchange channel. The auxiliary tube 32 extends into the receiving groove 411. The heat exchange medium can flow from the first heat exchange channel into the second heat exchange channel to exchange heat with the support 41, and the heat exchange medium after heat exchange can flow back into the first heat exchange channel.

[0048] The above settings allow for targeted heat dissipation of the bracket 41, improving its heat dissipation efficiency and enhancing the thermal safety of the battery device 100.

[0049] In some embodiments of this utility model, the plate body 31 and the auxiliary tube 32 can be welded together, or the plate body 31 and the auxiliary tube 32 can be brazed together. This improves the connection stability between the plate body 31 and the auxiliary tube 32, reduces the probability of heat exchange medium leakage, and enhances the reliability of the battery device 100.

[0050] In some embodiments of this invention, both the plate body 31 and the auxiliary tube 32 can be made of aluminum alloy. This reduces the weight of the heat exchanger 3, achieving a lightweight design for the battery device 100, and also improves the corrosion resistance and service life of the heat exchanger 3.

[0051] In some embodiments of this utility model, such as Figure 4 As shown, a heat-conducting element is provided inside the receiving groove 411, and the heat-conducting element fills the space between the outer peripheral wall of the auxiliary tube 32 and the side wall of the receiving groove 411. This increases the heat exchange area between the auxiliary tube 32 and the support 41, improves the heat exchange uniformity, prevents the support 41 from overheating and deforming, prevents the support 41 from affecting the normal exhaust of the exhaust channel, and improves the reliability of the battery device 100.

[0052] In some embodiments of this invention, the heat-conducting element can be configured to evaporate upon heating to reduce the temperature of the support 41. Thus, when thermal runaway occurs in the battery cell assembly 2 and high-temperature, high-pressure gas flows into the exhaust channel, the heat-conducting element can absorb heat and evaporate to cool the support 41. The heat-conducting element can also direct the cooling energy of the heat exchanger 3 to the support 41 for further cooling, achieving dual cooling. This significantly slows down the heating rate of the support 41, improves the stability of the support 41 during thermal runaway, and greatly alleviates the blockage problem of the exhaust channel.

[0053] In some embodiments of this invention, the material of the heat-conducting component can be hydrogel. Of course, the material of the heat-conducting component can also be thermally conductive gel or other volatile thermally conductive materials, which will not be elaborated further here. It is understood that hydrogels have high evaporation efficiency and good heat absorption performance, and can effectively delay the temperature rise of the support 41 in the event of thermal runaway of the battery cell assembly 2, thereby improving the reliability of the battery device 100.

[0054] In some embodiments of this utility model, such as Figure 4 As shown, the battery device 100 of this utility model embodiment also includes an exhaust pipe 42. The exhaust pipe 42 can be made of high temperature resistant materials such as metal and ceramic. The exhaust pipe 42 is disposed in the exhaust channel to support the exhaust channel.

[0055] The above settings can prevent local deformation of the exhaust channel at high temperatures, and can separate the high-temperature and high-pressure gas from the part of the bracket 41 that defines the exhaust channel, so as to prevent the bracket 41 from overheating and melting. It can also improve the sealing of the exhaust channel to prevent the high-temperature and high-pressure gas in the exhaust channel from leaking into the battery device 100, thereby improving the thermal safety of the battery device 100.

[0056] In some embodiments of this utility model, such as Figure 4 As shown, the extending direction of the receiving groove 411 can be set parallel to the extending direction of the exhaust pipe 42. This allows for a uniform distance between the receiving groove 411 and the exhaust pipe 42, which helps eliminate heat exchange dead zones in the bracket 41 and improves the thermal safety of the battery device 100.

[0057] In some embodiments of this utility model, such as Figure 3 As shown, in the vertical direction, the portion of the heat exchanger 3 that exchanges heat with the bracket 41 and the exhaust channel are arranged directly opposite each other. For example, the heat exchanger 3 can be positioned above the cell assembly 2, with the portion of the heat exchanger 3 that exchanges heat with the bracket 41 located directly above the exhaust channel. This shortens the distance between the heat exchanger 3 and the exhaust channel, allowing the heat exchanger 3 to better dissipate heat from the bracket 41, thus improving the design rationality of the battery device 100.

[0058] In some embodiments of this utility model, such as Figure 3 and Figure 5 As shown, an open groove 413 can be provided on one side of the bracket 41 along the horizontal direction to form an exhaust channel, and the exhaust pipe 42 is fitted into the groove 413. In this way, the space in the receiving cavity 11 can be fully utilized, and the space utilization rate can be improved.

[0059] Furthermore, the groove 413 can be located on the side of the bracket 41 facing away from the cell assembly 2, so that the bracket 41 can separate the exhaust pipe 42 from the cell assembly 2, thereby preventing the exhaust pipe 42 from heating the cell assembly 2 and causing a chain reaction. This can improve the design rationality of the battery device 100.

[0060] In some embodiments of this utility model, such as Figure 5 As shown, a support rib 414 can be provided on the bottom wall of the groove 413. The two ends of the support rib 414 along the length direction are respectively connected to the opposite side wall of the groove 413. The exhaust pipe 42 can be matched with the support rib 414 to limit the buffer space between the exhaust pipe 42 and the bottom wall of the groove 413. Thus, when the battery cell assembly 2 expands during charging and discharging, the buffer space can absorb the deformation to avoid the battery cell assembly 2 squeezing the exhaust pipe 42, thereby improving the structural stability of the exhaust pipe 42.

[0061] In some embodiments of this utility model, such as Figure 5 As shown, multiple support ribs 414 can be provided, and the multiple support ribs 414 are spaced apart along the length direction of the groove 413. This can improve the installation stability of the exhaust pipe 42.

[0062] In some embodiments of this utility model, such as Figure 3 and Figure 5 As shown, the exhaust pipe 42 can be constructed as a hollow square tube. This allows for full utilization of the space within the groove 413, increasing the flow area of ​​the exhaust pipe 42 and making the connection between the exhaust pipe 42 and the bracket 41 more stable, thus improving the design rationality of the battery device 100.

[0063] In some embodiments of this utility model, such as Figure 5 As shown, the portion of the bracket 41 without the receiving slots 411 and grooves 413 can be constructed as a honeycomb structure. This improves the structural strength of the bracket 41 and reduces its weight, achieving a lightweight design for the battery device 100.

[0064] In some embodiments of this invention, the exhaust assembly 4 further includes a temperature sensor (NTC), which is mounted on the bracket 41 and used to detect the temperature of the bracket 41. Preferably, the temperature sensor can be positioned close to the exhaust channel so that it can detect temperature changes in the bracket 41 more promptly. This allows for better monitoring of the battery device 100's status and improves the safety of the battery device 100.

[0065] In some embodiments of this utility model, the heat exchanger 3 is provided with a heat exchange channel for containing the heat exchange medium, and the heat exchanger 3 is also provided with an adjusting member for adjusting the flow rate of the heat exchange channel. The temperature sensor and the adjusting member are electrically connected to the control module of the battery device 100 respectively. The control module is configured to control the adjusting member to adjust the flow rate of the heat exchange medium according to the detection result of the temperature sensor.

[0066] For example, a heat exchange channel (such as a first heat exchange channel or a second heat exchange channel) for accommodating the heat exchange medium can be provided in the heat exchange component 3. The heat exchange component 3 is also provided with an adjusting component, which is located between the heat exchange channel and the external pipeline. The adjusting component can be constructed as an adjustable solenoid valve. The adjusting component is used to adjust the flow rate of the heat exchange channel.

[0067] The temperature sensor and the regulator are electrically connected to the control module of the battery device 100. The control module is configured to control the regulator based on the detection results of the temperature sensor to adjust the flow rate of the heat exchange channel.

[0068] During the specific operation, when the battery cell assembly 2 experiences thermal runaway, it generates a large amount of high-temperature and high-pressure gas. This gas flows into the exhaust pipe 42, which radiates heat to the support 41, causing the temperature of the support 41 to rise. The temperature sensor detects the temperature of the support 41 and transmits the data to the control module. When the control module determines that the temperature of the support 41 has risen, it can control the regulating component to increase the flow rate of the heat exchange channel so that the heat exchange component 3 can efficiently cool the support 41, thereby delaying the temperature rise of the support 41.

[0069] With the above settings, the temperature of the bracket 41 can be better controlled, effectively reducing the heating rate of the bracket 41 during thermal runaway of the battery cell assembly 2, improving the stability of the bracket 41 during thermal runaway of the battery cell assembly 2, and greatly improving the problem of blockage of the exhaust channel.

[0070] In some embodiments of this utility model, such as Figure 5 As shown, a snap-fit ​​part 412 can be provided on the bracket 41, and the temperature sensor is snapped into and connected to the snap-fit ​​part 412. This reduces the installation difficulty of the temperature sensor, which in turn reduces the overall assembly difficulty of the battery device 100 and improves the design rationality of the battery device 100.

[0071] In some embodiments of the present invention, the battery device 100 of the present invention further includes a housing 1 and a cell assembly 2. A heat exchanger 3 is disposed on the housing 1 to enclose and form a receiving cavity 11 for accommodating the cell assembly 2. A bracket 41 is disposed between the end of the cell assembly 2 and the side wall of the receiving cavity 11.

[0072] For example, such as Figures 1-2As shown, the battery device 100 also includes a housing 1 and a cell assembly. A heat exchanger 3 is disposed on the housing 1, and the heat exchanger 3 and the housing 1 enclose a receiving cavity 11 for accommodating the cell assembly 2, which has multiple cells stacked together. A support 41 is disposed between the end of the cell assembly 2 and the side wall of the receiving cavity 11. The support 41 fills the gap between the end of the cell assembly 2 and the side wall of the receiving cavity 11 to prevent the cell assembly 2 from moving relative to the housing 1. Furthermore, when the cell assembly 2 expands during charging and discharging, the support 41 can absorb the expansion of the cell assembly 2 to prevent excessive compression of the cell assembly 2. This improves the structural stability of the battery device 100.

[0073] In the specific installation process, firstly, the exhaust pipe 42 is inserted into the groove 413, and the temperature sensor is snapped into the snap-fit ​​part 412 to form the exhaust assembly 4; then, adhesive can be applied to the side of the bracket 41 facing the cell assembly 2, and the exhaust assembly 4 is glued to the cell assembly 2; next, the cell assembly 2 and the exhaust assembly 4 are installed together into the receiving cavity 11; finally, hydrogel is poured into the receiving groove 411, and the heat exchanger 3 is installed before the hydrogel solidifies, thus completing the assembly of the battery device 100.

[0074] This utility model also proposes an electrical device.

[0075] The electrical device according to the embodiments of this utility model includes a battery device 100 according to any of the above embodiments. It should be noted that the electrical device can be any of the following: a pure electric vehicle, a hybrid vehicle, a drone, etc.

[0076] According to the embodiments of the present invention, the battery device 100 of the electrical equipment has high thermal safety, which helps to improve the safety of the electrical equipment and enhance user satisfaction.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device (100), characterized by include: Heat exchanger (3); The exhaust assembly (4) includes a bracket (41) with an exhaust channel, and the heat exchanger (3) exchanges heat with the bracket (41).

2. The battery device (100) according to claim 1, characterized in that The support (41) is provided with a receiving groove (411), and a portion of the heat exchanger (3) extends into the receiving groove (411) for heat exchange with the support (41).

3. The battery device (100) according to claim 2, characterized in that It also includes a battery cell assembly (2), and the heat exchanger (3) exchanges heat with the battery cell assembly (2).

4. The battery device (100) according to claim 3, characterized in that The heat exchanger (3) includes a plate body (31) and an auxiliary tube (32). The plate body (31) is provided with a first heat exchange channel. The plate body (31) exchanges heat with the battery cell assembly (2). The plate body (31) is connected to the auxiliary tube (32). The auxiliary tube (32) is provided with a second heat exchange channel that communicates with the first heat exchange channel. The auxiliary tube (32) extends into the receiving groove (411).

5. The battery device (100) according to claim 4, characterized in that The plate body (31) is welded to the additional tube (32).

6. The battery device (100) according to claim 4, characterized in that The receiving groove (411) is provided with a heat-conducting element, which is filled between the outer peripheral wall of the additional tube (32) and the side wall of the receiving groove (411).

7. The battery device (100) according to claim 6, characterized in that The heat-conducting element is configured to evaporate upon heating to reduce the temperature of the support (41).

8. The battery device (100) according to claim 7, characterized in that The material of the thermal conductive component is hydrogel.

9. The battery device (100) according to any one of claims 1-8, characterized in that, It also includes an exhaust pipe (42), which is disposed in the exhaust passage to support the exhaust passage.

10. The battery device (100) according to any one of claims 1-8, characterized in that, In the vertical direction, the portion of the heat exchanger (3) that exchanges heat with the support (41) and the exhaust channel are arranged opposite each other.

11. The battery device (100) according to claim 9, characterized in that The bracket (41) has an open groove (413) on one side along the horizontal direction to form the exhaust channel, and the exhaust pipe (42) is located in the groove (413).

12. The battery device (100) according to claim 11, characterized in that The bottom wall of the groove (413) is provided with a support rib (414), and the exhaust pipe (42) is matched with the support rib (414) to limit the buffer space between the exhaust pipe (42) and the bottom wall of the groove (413).

13. The battery device (100) according to claim 9, characterized in that The exhaust pipe (42) is constructed as a hollow square tube.

14. The battery device (100) according to any one of claims 1-8, characterized by The exhaust assembly (4) also includes a temperature sensor, which is mounted on the bracket (41) and used to detect the temperature of the bracket (41).

15. The battery device (100) according to claim 14, characterized in that The heat exchanger (3) is provided with a heat exchange channel for containing the heat exchange medium. The heat exchanger (3) is also provided with an adjustment element for adjusting the flow rate of the heat exchange channel. The temperature sensor and the adjustment element are electrically connected to the control module of the battery device (100). The control module is configured to control the regulator to adjust the flow rate of the heat exchange medium based on the detection results of the temperature sensor.

16. The battery device (100) according to claim 14, characterized in that The bracket (41) is provided with a snap-fit ​​part (412), and the temperature sensor is snap-fitted to the snap-fit ​​part (412).

17. The battery device (100) according to any one of claims 1-8, characterized by It also includes a housing (1) and a battery cell assembly (2), wherein the heat exchanger (3) is covered on the housing (1) to enclose and form a receiving cavity (11) for accommodating the battery cell assembly (2), and the bracket (41) is disposed between the end of the battery cell assembly (2) and the side wall of the receiving cavity (11).

18. An electrical device, characterized by The battery device (100) according to any one of claims 1-17. The battery device (100) according to any one of claims 1-17.

Images