WO2024032265A1

WO2024032265A1 - Battery apparatus comprising heat exchange assembly and electric vehicle comprising the battery apparatus

Info

Publication number: WO2024032265A1
Application number: PCT/CN2023/105097
Authority: WO
Inventors: 曹宇; 王贤鹏
Original assignee: 蔚来电池科技(安徽)有限公司
Priority date: 2022-08-12
Filing date: 2023-06-30
Publication date: 2024-02-15
Also published as: CN218101438U

Abstract

The present utility model relates to the technical field of electric vehicles. Specifically provided are a battery apparatus comprising a heat exchange assembly and an electric vehicle comprising the battery apparatus, aiming to solve the problem of large space occupation after heat exchange assemblies are connected to refrigerant pipes caused by unreasonable designs of the heat exchange assemblies of existing power batteries. For this purpose, the heat exchange assembly of the present utility model comprises: a heat exchange plate, refrigerant channels being arranged in the heat exchange plate, and a side surface of the heat exchange plate being provided with refrigerant ports communicated with the refrigerant channels; and a flow collection structure, the flow collection structure being used for connecting to a refrigerant pipe and being arranged on the heat exchange plate, a mounting position of the flow collection structure corresponding to positions of the refrigerant ports, the flow collection structure and the heat exchange plate enclosing a flow collection chamber, the refrigerant ports being communicated with the flow collection chamber, and a refrigerant being circulated between the refrigerant channels and the refrigerant pipe by means of the flow collection chamber. The heat exchange assembly of the present utility model can reduce or even avoid an end protruding from the heat exchange plate, thereby reducing the size of the heat exchange assembly in the length direction of the heat exchange plate, and reducing the space occupancy rate.

Description

Battery device including heat exchange component and electric vehicle including the battery device

This application claims priority to Chinese patent application 202222126320.4, which was submitted on August 12, 2022 and has an invention title of "Battery device including heat exchange components and electric vehicle including the battery device". The entire content of the above-mentioned Chinese patent application is incorporated by reference. incorporated into this application.

Technical field

The utility model relates to the technical field of electric vehicles, and specifically provides a battery device including a heat exchange component and an electric vehicle including the battery device.

Background technique

Electric vehicle power batteries are lithium-ion batteries. Among them, cylindrical lithium batteries are widely used in electric vehicles due to their high degree of automation, good product consistency, and relatively low price. The performance of cylindrical lithium batteries is relatively sensitive to temperature changes, and its suitable operating temperature range is 20°C ~ 40°C. Due to factors such as internal resistance, power batteries will inevitably generate a large amount of heat during the charging and discharging process, causing the temperature to rise. The rise in temperature will affect many characteristic parameters of the battery, such as internal resistance, voltage, power and battery life. In particular, the increase in internal resistance will further increase the heat generation of the battery, thus forming a vicious cycle.

In order to ensure that the battery is maintained within a suitable temperature range under any working conditions, the battery (cylindrical lithium battery) needs to be effectively cooled. In the existing technology, battery (cylindrical lithium battery) cooling methods include air cooling, liquid cooling and direct cooling solutions. Among them, the liquid cooling solution is the mainstream solution for battery pack thermal management at this stage. The commonly used liquid cooling method is an aluminum heat exchange plate. The aluminum heat exchange plate has a serpentine or corrugated structure. Each of the aluminum heat exchange plates The arc-shaped section is in side contact with a battery (cylindrical lithium battery). There are multiple refrigerant channels inside the aluminum heat exchange plate. The heat of the battery (cylindrical lithium battery) is transferred to the refrigerant in the aluminum heat exchange plate through side heat dissipation. , the heat is taken away by the refrigerant, thereby reducing the battery temperature.

The current design of the connection between the aluminum heat exchange plate and the refrigerant pipe is not reasonable. The reason is that the inlet and outlet of the refrigerant channel in the aluminum heat exchange plate are located on the end face of the aluminum heat exchange plate. Therefore, The collecting structure must be installed on the end face of the heat exchange plate to achieve connection with the refrigerant pipe. This will cause the collecting structure and the refrigerant pipe to extend beyond the end face of the heat exchange plate, making the overall space occupied, especially After the battery pack is assembled, the connection part between the aluminum heat exchange plate and the refrigerant pipe will extend to the outside of the entire battery part, thereby increasing the space occupancy of the overall battery pack and improving the space occupancy rate.

Utility model content

The utility model aims to solve the above technical problems, that is, to solve the problem that the existing heat exchange components are unreasonably designed and occupy a large space after being connected to the refrigerant pipe.

In a first aspect, the utility model provides a battery device including a heat exchange component. The battery device includes a battery. The heat exchange component includes a heat exchange plate. A refrigerant channel is provided in the heat exchange plate. The side surface of the heat exchange plate is provided with a refrigerant port connected to the refrigerant channel. The heat exchange plate has a current collection area and a heat exchange area for exchanging heat with the battery. The refrigerant port is located on the current collection area. In the area; the current collecting structure is used to connect with the refrigerant pipe. The current collecting structure is arranged in the current collecting area of the heat exchange plate. The installation position of the current collecting structure is in line with the refrigerant port. Correspondingly, the collecting structure and the heat exchange plate form a collecting cavity, the refrigerant port is connected with the collecting cavity, and the collecting cavity is passed between the refrigerant channel and the refrigerant tube. Circulation of refrigerant.

Further, the current collecting structure includes a collecting hood, the collecting hood is buckled on the side surface of the heat exchange plate, and the collecting hood and the side surface of the heat exchange plate surround the collecting hood. flow chamber.

Further, the header is provided with a joint for connecting to the refrigerant pipe, and the axial direction of the joint intersects with the side surface of the heat exchange plate.

Further, a connecting flange is provided on the outer periphery of the collecting cover, and the collecting cover is connected to the heat exchange plate through the connecting flanging.

Further, the flow collecting cover and the heat exchange plate are sealed.

Further, in the heat exchange area, the side surface of the heat exchange plate is wavy; and/or in the current collecting area, the side surface of the heat exchange plate is flat.

Further, the current collection area is located at an end of the heat exchange plate.

Further, the refrigerant channel includes a liquid inlet channel and a liquid outlet channel, and the refrigerant port includes a refrigerant inlet and a refrigerant outlet; the refrigerant inlet, the liquid inlet channel, and the liquid outlet channel and the refrigerant outlet in sequence; the refrigerant inlet and the refrigerant outlet are located on different sides of the heat exchange plate, and the current collecting structure includes a first collecting hood and a second collecting hood; the first The collector hood and the refrigerant inlet are located on the same side of the heat exchange plate. The first collector hood and the heat exchange plate form a first collector cavity. The refrigerant inlet and the first collector are The cavities are connected; the second manifold and the refrigerant outlet are located on the same side of the heat exchange plate, and the second manifold and the heat exchange plate form a second manifold, and the refrigerant outlet Communicated with the second manifold.

Further, there are multiple liquid inlet channels and multiple liquid outlet channels, and the liquid inlet channels and the liquid outlet channels are alternately arranged; there are multiple refrigerant inlets and refrigerant outlets, and the refrigerant inlet and the refrigerant outlet are multiple. The liquid inlet channels are arranged in one-to-one correspondence and connected, and the refrigerant outlets are arranged in one-to-one correspondence and connected with the liquid outlet channels; all the refrigerant inlets are connected to the first manifold, and all the refrigerant outlets are connected to the first manifold. All are connected with the second manifold.

According to a second aspect of the present invention, an electric vehicle is also provided, including a vehicle body and a battery device, and the battery device is the above-mentioned battery device.

When the above technical solution is adopted, the heat exchange assembly of the present invention arranges the refrigerant port on the side surface of the heat exchange plate, and the installation position of the current collecting structure corresponds to the position of the refrigerant port. Therefore, the current collecting structure also Installed on the side surface of the heat exchange plate, compared with the existing method of arranging the refrigerant port on the end surface of the heat exchange plate, the current collecting structure does not need to be installed on the end surface of the heat exchange plate, which can reduce or even avoid Exceeding the end of the heat exchange plate, thereby shortening the size of the heat exchange component in the length direction of the heat exchange plate and reducing space occupation.

Description of drawings

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

Figure 1 is a schematic structural diagram of a heat exchange assembly of a battery device according to an embodiment of the present invention;

Figure 2 is a partial enlarged view of part A in Figure 1;

Figure 3 is a cross-sectional view of the heat exchange assembly of the battery device according to the embodiment of the present invention;

Figure 4 is a partial enlarged view of part B in Figure 3;

List of reference signs:
10. Heat exchange plate; 11. Side surface; 12. Heat exchange area; 13. Collection area; 14. End surface; 20. Refrigerant channel; 21. Liquid inlet channel; 22. Liquid outlet channel; 30. Refrigerant port; 31 , refrigerant inlet; 32, refrigerant outlet; 40, collecting structure; 40a, first collecting cover; 40b, second Manifold; 41a, first joint; 41b, second joint; 42, connection flange; 50, manifold; 51, first manifold; 52, second manifold.

Detailed ways

The present utility model will be further described below in conjunction with the examples, but the protection scope of the present utility model is not limited to the contents of the description.

In order to enable those in the technical field to better understand the solution of the present utility model, the technical solution in the embodiment of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present utility model. Obviously, the described The embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of protection of the present utility model. For example, the battery of the battery device mentioned in the following embodiments can be a cylindrical lithium battery, or a battery of other shapes such as rectangular, sheet, soft pack, etc.

It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. . It is to be understood that the terms so used are interchangeable under appropriate circumstances for the purposes of the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusions. For example, the inclusion of a series of products or equipment need not be limited to those steps or units explicitly listed, but may include none. Other units that are clearly listed or inherent to these products or equipment.

In addition, it should be noted that in the description of the present utility model, unless otherwise explicitly stipulated and limited, the terms "installation", "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. It can be a detachable connection or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

As shown in Figures 1 to 4, the embodiment of the present invention discloses a battery device including a heat exchange component. The battery device includes a battery. The heat exchange component includes a heat exchange plate 10 and a current collecting structure 40. The heat exchange component A refrigerant channel 20 is provided in the plate 10 (see FIG. 3 ), a refrigerant port 30 connected to the refrigerant channel 20 is provided on the side surface 11 of the heat exchange plate 10 , and the heat exchange plate 10 has a current collecting area 13 And a heat exchange area 12 for exchanging heat with the battery (see Figure 2), the refrigerant port 30 is located in the collecting area 13; wherein, the refrigerant channel 20 includes a liquid inlet channel 21 and a liquid outlet channel 22 (see Figures 3 and 4 ), the refrigerant port 30 includes a refrigerant inlet 31 and a refrigerant outlet 32 (see Figures 3 and 4). The refrigerant inlet 31 and the refrigerant outlet 32 are respectively located on different sides of the heat exchange plate 10; the refrigerant inlet 31, the liquid inlet channel 21, the liquid outlet The channel 22 and the refrigerant outlet 32 are connected in sequence. The refrigerant enters the liquid inlet channel 21 through the refrigerant inlet 31 to exchange heat with the battery, then flows through the liquid outlet channel 22 and then flows out from the refrigerant outlet 32. It should be noted that the role of the heat exchange component is to ensure that the temperature of the battery is within the appropriate operating temperature range during operation. When the ambient temperature is too high or the battery operating temperature is too high, the heat exchange component mainly plays a cooling role. Allow the battery to cool down. When the ambient temperature is too low and affects performance, the heat exchange component can also play a heating role so that the battery can work normally.

The current collecting structure 40 is used to connect with the refrigerant pipe. As shown in FIG. 2 , the current collecting structure 40 is arranged in the current collecting area 13 of the heat exchange plate 10 . The current collecting structure 40 includes a first pipe buckled on the heat exchange plate 10 respectively. The first header 40a and the second header 40b are located on the same side of the heat exchange plate 10 as the refrigerant inlet 31. The installation position of the first header 40a corresponds to the position of the refrigerant inlet 31, such as As shown in Figures 3 and 4, the first manifold 40a and the heat exchange plate 10 form a first manifold 51, and the refrigerant inlet 31 is connected to the first manifold 51; the second manifold 40b and the refrigerant outlet 32 Located on the same side of the heat exchange plate 10, the installation position of the second header 40b corresponds to the position of the refrigerant outlet 32. The second header 40b and the heat exchange plate 10 form a second header chamber 52, and the refrigerant outlet 32 It is connected with the second manifold 52 .

When in use, the refrigerant in the external refrigerant pipeline enters the first manifold 51, enters the liquid inlet channel 21 through the refrigerant inlet 31, and exchanges heat with the battery. The heat-exchanged refrigerant then passes through the liquid outlet channel 22 and the refrigerant in sequence. The outlet 32 enters the second manifold 52 and finally returns to the external refrigerant pipeline. The heat exchange assembly of the present invention arranges the refrigerant port 30 on the side surface 11 of the heat exchange plate 10, and the installation position of the current collecting structure 40 corresponds to the position of the refrigerant port 30. Therefore, the current collecting structure 40 is also installed on the heat exchanger. On the side surface 11 of the hot plate 10, compared with the prior art method of arranging the refrigerant port 30 on the end face 14 of the heat exchange plate 10, the current collecting structure 40 does not need to be installed on the end face 14 of the heat exchange plate 10. , can reduce or even avoid exceeding the end of the heat exchange plate 10, thereby shortening the size of the heat exchange component in the length direction of the heat exchange plate 10 and reducing the space occupation rate.

It should be noted that in this embodiment, although the refrigerant inlet 31 is separated from the refrigerant outlet 32 They are located on different sides of the heat exchange plate 10, but this is not limiting. In some other embodiments not shown in the figure, the refrigerant inlet 31 and the refrigerant outlet 32 can also be located on the same side of the heat exchange plate 10. Correspondingly, the first collecting cover 40a and the second collecting cover 40b can also be located on the same side of the heat exchange plate 10, as long as the refrigerant port 30 is provided on the side surface 11 of the heat exchange plate 10, and the installation position of the collecting structure 40 is Corresponding to the position of the refrigerant port 30, they are all within the protection scope of the present utility model.

It can be understood that in this embodiment, the current collecting structure 40 is in the form of a collecting cover, and the forming process of the collecting cover is relatively simple and easy to install. There are two in number, namely the first flow collecting cover 40a and the second collecting cover 40b. However, these are not restrictive. Formally, the manifold structure 40 may also be a tubular structure having a manifold 50 . That is to say, as long as the manifold structure 40 and the side surface 11 of the heat exchange plate 10 form a manifold 50 and the manifold 50 is connected to the refrigerant port 30, it is within the protection scope of the present invention. In terms of quantity, the current collecting structure 40 may be a plurality of independent structures, such as a first collecting cover 40a and a second collecting cover 40b. It can also be an integral structure. For example: in another embodiment not shown in the figure, when the refrigerant inlet 31 and the refrigerant outlet 32 are located on both sides of the heat exchange plate 10, the current collecting structure 40 is an annular sleeve. structure, and the annular sleeves form independent first manifolds 51 and second manifolds 52 on both sides of the heat exchange plate 10 respectively, and are connected to the refrigerant inlet 31 and the refrigerant outlet 32 respectively. In some other embodiments not shown in the figure, when the refrigerant inlet 31 and the refrigerant outlet 32 are located on the same side of the heat exchange plate 10, the collecting structure 40 can be a larger collecting hood, with the internal parts separated by partitions. It is also feasible to separate the first manifold 51 and the second manifold 52 into two independent ones and communicate with the refrigerant inlet 31 and the refrigerant outlet 32 respectively.

In this embodiment, the header is provided with a joint for connecting to the refrigerant pipe, and the axial direction of the joint 41 intersects with the side surface 11 of the heat exchange plate 10 . As shown in Figures 2 to 4, the first header 40a is provided with a first joint 41a, and the second header 40b is provided with a second joint 41b. The first joint 41a is used to connect to the refrigerant inlet pipe. The two joints 41b are used to connect to the refrigerant outlet pipe. Since the first header 40a and the second header 40b are disposed on the side surface 11 of the heat exchange plate 10, the first joint 41a and the second joint 41b are respectively The axis intersects the side surface 11, that is to say, the orientation of the first joint 41a is different from the orientation of the end of the heat exchange plate 10. Similarly, the orientation of the second joint 41b is different from the orientation of the end of the heat exchange plate 10. are also different, therefore, the direction of the refrigerant pipe connected to the joint 41 can also be different from the direction of the end of the heat exchange plate 10, Thereby reducing space occupancy. Preferably, the axis of the first joint 41a is perpendicular to the end direction of the heat exchange plate 10, and the axis of the second joint 41b is also perpendicular to the end direction of the heat exchange plate 10, thereby minimizing space occupation.

Further, as shown in FIGS. 2 to 4 , a connecting flange 42 is provided on the outer periphery of the collecting cover, and the collecting cover is connected to the heat exchange plate 10 through the connecting flanging 42 . In order to facilitate the connection with the heat exchange plate 10, a connecting flange 42 is provided on the outer periphery of the first collecting cover 40a and the second collecting cover 40b, and the connection with the heat exchange plate 10 is realized through the connecting flange 42, wherein the connecting flange 42 is connected to the heat exchange plate 10. The method can be bonding or welding. In addition, in order to prevent the refrigerant from leaking, the first and second headers 40a, 40b and the heat exchange plate 10 are sealed.

As shown in Figures 1 and 2, in the heat exchange area 12, the side surface 11 of the heat exchange plate 10 is wavy; in the current collection area 13, the side surface 11 of the heat exchange plate 10 is flat. By arranging the heat exchange area 12 and the current collecting area 13, the heat exchange area 12 of the heat exchange plate 10 can be further optimized for batteries of different shapes, thereby improving the heat exchange efficiency. Taking the cylindrical lithium battery as an example, in order to better fit the side surface of the cylindrical lithium battery, the side surface 11 of the heat exchange plate 10 in the heat exchange area 12 is set to be wavy, which can improve the connection between the heat exchange plate 10 and the cylindrical lithium battery. contact area, thereby improving heat transfer efficiency. Since the current collecting area 13 needs to be installed with a collecting cover, the flatness of the collecting area 13 must be ensured, thereby making the connection of the collecting cover more convenient and reliable.

It should be noted that in this embodiment, in the heat exchange area 12, the side surface 11 of the heat exchange plate 10 is wavy; in the current collecting area 13, the side surface 11 of the heat exchange plate 10 is flat, but this It's not restrictive. In some other embodiments not shown in the figure, it is also possible that in the heat exchange area 12, the side surface 11 of the heat exchange plate 10 is wavy, or in the current collecting area 13, the side surface of the heat exchange plate 10 11 is a plane, which also falls within the protection scope of the present utility model.

Preferably, as shown in FIGS. 1 and 2 , the current collecting area 13 is located at the end of the heat exchange plate 10 . In other words, the refrigerant port 30 is located at the end of the heat exchange plate 10. It should be noted that the end position here does not refer to the end surface 14 of the heat exchange plate 10. The refrigerant port 30 is still open. On the side surface 11 of the heat exchange plate 10 and at the same time, close to one end of the heat exchange plate 10, this has the advantage of facilitating the opening of the refrigerant port 30. Because the heat exchange plate 10 is formed by metal extrusion, after the molding, due to process reasons, the openings of the refrigerant channels 20 will first be formed on the end surfaces 14 of both ends of the heat exchange plate 10, and then the openings of the refrigerant channels 20 will be formed on the side surfaces 11 of the heat exchange plate 10. Then open the refrigerant port 30. During the process of opening the refrigerant port 30, the debris generated will fall into the refrigerant channel 20. It is easy to take out, and by opening the refrigerant port 30 near the end, when processing the refrigerant port 30, debris can fall out through the opening of the refrigerant channel 20, thereby ensuring smooth flow in the refrigerant channel 20. After the refrigerant port 30 is opened, the end surface 14 of the heat exchange plate 10 close to the refrigerant port 30 can be sealed, and the other end of the heat exchange plate 10 can have a converging structure so that the liquid inlet channel 21 and the liquid outlet in the refrigerant channel 20 The other end of the channel 22 is connected in the bus structure, thereby completing the communication between the refrigerant port 30 and the refrigerant channel 20 .

In order to improve the heat exchange efficiency and make the heat exchange more uniform, there are multiple liquid inlet channels 21 and liquid outlet channels 22, and the liquid inlet channels 21 and liquid outlet channels 22 are alternately arranged; there are multiple refrigerant inlets 31 and refrigerant outlets 32. The refrigerant inlet 31 and the liquid inlet channel 21 are arranged in a one-to-one correspondence and connected, and the refrigerant outlet 32 is arranged in a one-to-one correspondence and connected to the liquid outlet channel 22; all the refrigerant inlets 31 are connected to the first manifold chamber 51, and all the refrigerant outlets 32 are connected to the first manifold cavity 51. The second manifold chamber 52 is connected.

According to a second aspect of the present invention, a battery pack is also provided, including the above-mentioned heat exchange component.

So far, the technical solutions of the present utility model have been described in conjunction with the preferred embodiments shown in the drawings. However, those skilled in the art can easily understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or replacements to relevant technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present invention.

Claims

A battery device including a heat exchange component, the battery device including a battery, characterized in that the heat exchange component includes:

Heat exchange plate (10), a refrigerant channel (20) is provided in the heat exchange plate (10), and a side surface (11) of the heat exchange plate (10) is provided with a refrigerant channel (20) connected to the refrigerant channel (20). Refrigerant port (30). The heat exchange plate (10) has a current collection area (13) and a heat exchange area (12) for exchanging heat with the battery. The refrigerant port (30) is located in the current collection area. Within area(13);

A current collecting structure (40), the current collecting structure (40) is used to connect to the refrigerant pipe, the current collecting structure (40) is arranged in the current collecting area (13) of the heat exchange plate (10), the The installation position of the current collecting structure (40) corresponds to the position of the refrigerant port (30), and the current collecting structure (40) and the heat exchange plate (10) form a collecting cavity (50). The refrigerant port (30) is connected to the manifold (50), and refrigerant flows between the refrigerant channel (20) and the refrigerant tube through the manifold (50).
The battery device according to claim 1, characterized in that:

The current collecting structure (40) includes a current collecting hood, which is buckled on the side surface (11) of the heat exchange plate (10). The current collecting hood and the heat exchange plate (10) ) side surface (11) surrounds the manifold (50).
The battery device according to claim 2, characterized in that:

The header is provided with a joint for connecting to the refrigerant pipe, and the axial direction of the joint intersects with the side surface (11) of the heat exchange plate (10).
The battery device according to claim 2, characterized in that:

A connecting flange (42) is provided on the outer periphery of the collecting cover, and the collecting cover is connected to the heat exchange plate (10) through the connecting flanging (42).
The battery device according to claim 2, characterized in that:

The flow collecting cover and the heat exchange plate (10) are sealed.
The battery device according to claim 1, characterized in that:

In the heat exchange area (12), the side surface (11) of the heat exchange plate (10) is wavy; and/or

In the current collecting area (13), the side surface (11) of the heat exchange plate (10) is flat. noodle.
The battery device according to claim 1, characterized in that:

The current collecting area (13) is located at the end of the heat exchange plate (10).
The battery device according to claim 1, characterized in that:

The refrigerant channel (20) includes a liquid inlet channel (21) and a liquid outlet channel (22), and the refrigerant port (30) includes a refrigerant inlet (31) and a refrigerant outlet (32); the refrigerant inlet (31), The liquid inlet channel (21), the liquid outlet channel (22) and the refrigerant outlet (32) are connected in sequence;

The refrigerant inlet (31) and the refrigerant outlet (32) are located on different sides of the heat exchange plate (10), and the collecting structure (40) includes a first collecting cover (40a) and a second collecting hood (40a). Flow hood (40b);

The first collecting cover (40a) and the refrigerant inlet (31) are located on the same side of the heat exchange plate (10), and the first collecting cover (40a) and the heat exchange plate (10) Enclosing a first manifold (51), the refrigerant inlet (31) is connected with the first manifold (51);

The second collecting hood (40b) and the refrigerant outlet (32) are located on the same side of the heat exchange plate (10), and the second collecting hood (40b) and the heat exchange plate (10) A second manifold (52) is formed, and the refrigerant outlet (32) is connected with the second manifold (52).
The battery device according to claim 8, characterized in that:

There are multiple liquid inlet channels (21) and liquid outlet channels (22), and the liquid inlet channels (21) and the liquid outlet channels (22) are arranged alternately;

There are multiple refrigerant inlets (31) and refrigerant outlets (32). The refrigerant inlets (31) are arranged in one-to-one correspondence and connected with the liquid inlet channel (21). The refrigerant outlet (32) is connected with the liquid inlet channel (21). The liquid outlet channels (22) are arranged in one-to-one correspondence and connected;

All the refrigerant inlets (31) are connected to the first manifold (51), and all the refrigerant outlets (32) are connected to the second manifold (52).
An electric vehicle includes a vehicle body and a battery device, wherein the battery device is the battery device according to any one of claims 1 to 9.