Heat exchange plate, battery assembly and vehicle

Abstract

The embodiment of the present application provides a heat exchange plate, a battery assembly and a vehicle. The heat exchange plate comprises a main plate body; the main plate body is divided into a first part and a second part which are connected along a first direction, a plurality of flow channels are arranged in the first part, the flow channels are used for flowing cooling liquid, the first part is used for contacting a first part of an electric core, the first part is a part close to a pole column of the electric core, and the second part is used for contacting a second part of the electric core, the second part is a part away from the pole column of the electric core.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a heat exchange plate, a battery assembly, and a vehicle. Background Technology

[0002] Existing power batteries typically require the use of a power battery thermal management system. This system can heat up or cool down the power battery as needed. Current thermal management systems usually include a temperature-regulating plate that contacts one side of the power battery for heat exchange, thus lowering or raising the battery temperature on that side. However, due to the limited contact area between the plate and the battery, the heat exchange efficiency is low, making it difficult to meet the demands of high-rate fast charging.

[0003] Increasing the number of plates, allowing them to contact the battery from multiple sides, can improve the heat exchange efficiency between the battery thermal management system and the battery to some extent. However, this increases the weight of the battery thermal management system, hindering the final product's lightweight design. Furthermore, the junctions of the plates have a stronger cooling or heating effect on the battery, increasing the temperature difference between different parts of the battery and potentially affecting its charging and discharging speed. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a heat exchange plate, battery assembly and vehicle that overcomes or at least partially solves the above problems.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a heat exchange plate, the heat exchange plate including a main body;

[0007] Along the first direction, the motherboard body is divided into a first part and a second part connected together. The first part is provided with a plurality of flow channels for circulating coolant. The first part is used to contact a first part of the battery cell, which is a part close to the terminal of the battery cell. The second part is used to contact a second part of the battery cell, which is a part away from the terminal of the battery cell.

[0008] Optionally, the heat exchange plate further includes an end cap;

[0009] Along the second direction, the first part has a first end and a second end opposite to each other, and both the first end and the second end are connected to the end cap. The flow channel extends through the first part along the second direction. The end cap is provided with a through hole, which communicates with the flow channel. The first direction intersects the second direction.

[0010] Optionally, along the second direction, the length of the first portion is greater than the length of the second portion, and a gap is formed between the end of the first portion and the end of the second portion.

[0011] Optionally, the second part is provided with at least one through hole, which penetrates the second part along the second direction.

[0012] Optionally, the end cap is provided with a cavity structure, which is connected to the flow channel and the through hole respectively.

[0013] Optionally, the end cap includes a first cap body and a second cap body;

[0014] The first cover is fixedly mounted on the main body, and the second cover is sealed to the first cover; the cavity structure is disposed on the second cover.

[0015] Optionally, the end cap is provided with a conductive element;

[0016] The first end of the conductive element is electrically connected to the motherboard body, and the second end of the conductive element extends to the side of the end cover facing away from the motherboard body for grounding.

[0017] Optionally, the first end of the conductive element includes a pair of overhanging elastic clips, which are inserted into the flow channel to make the first end of the conductive element electrically connected to the main board body.

[0018] Optionally, the end cap is provided with a mounting member, which is positioned opposite to the second end of the conductive element in a first direction. The mounting member is used to connect to a connector of the conductive element, and the connector is grounded so that the conductive element can be grounded.

[0019] Optionally, an insulating layer is provided on the outer surface of the motherboard body.

[0020] Secondly, this application provides a battery assembly, which includes multiple rows of cells, a base plate, and multiple heat exchange plates as described above.

[0021] The battery cell array is disposed on the base plate, and the battery cell array includes multiple battery cells arranged sequentially along a second direction. Each battery cell includes a cell body and an electrode post disposed on the cell body.

[0022] Multiple heat exchange plates are spaced apart along a third direction, and a battery array is arranged between two adjacent heat exchange plates. The first part of the heat exchange plate is opposite to the electrode post, and the second part of the heat exchange plate is in contact with the battery cell body.

[0023] Thirdly, embodiments of this application provide a vehicle that includes any of the battery components described above.

[0024] In this embodiment, the heat exchange plate includes a main body. In a first direction, the main body is divided into a first part and a second part connected together. The first part has a flow channel to facilitate heat exchange with a first portion of the battery cell near the electrode. The second part contacts a second portion of the battery cell away from the electrode to ensure a fixed connection between the heat exchange plate and the battery cell. During use, the first part of the heat exchange plate can exchange heat with the portion of the battery cell near the electrode to prevent overheating during charging and discharging. For the second portion of the battery cell away from the electrode, since the heat generation is relatively low, the second part can contact it to ensure a fixed connection area between the heat exchange plate and the battery cell. This improves the utilization rate of the coolant and reduces the waste of coolant's cold or heat capacity. Furthermore, when heat exchange plates are used in combination, the second portion of the heat exchange plate that has not received coolant can be placed at the junction of the heat exchange plates. This prevents the junction from becoming too cold or too hot, thereby ensuring a more balanced heat exchange effect between the heat exchange plate and the battery cell. Since the second part of the heat exchange plate does not allow coolant to flow in, the heat exchange plate described in this application requires less coolant for the same volume, which helps to reduce the weight of the battery pack using the heat exchange plate.

[0025] Additional aspects and advantages of the 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 the present invention 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 the structure of a heat exchange plate according to an embodiment of this application;

[0028] Figure 2 yes Figure 1 A partial cross-sectional diagram;

[0029] Figure 3 yes Figure 2 A magnified view of a portion of the middle end cap area;

[0030] Figure 4 yes Figure 3 External structure diagram;

[0031] Figure 5 This is a schematic diagram of a multi-faceted cooling structure;

[0032] Reference numerals: 1. Heat exchange plate; 11. Main body; 111. First part; 112. Second part; 113. Notch; 114. Flow channel; 12. End cap; 121. Through hole; 122. Cavity structure; 123. First cover; 124. Second cover; 13. Conductive component; 131. Elastic buckle; 14. Mounting component; 2. Base plate; 3. Battery cell; Y-first direction; X-second direction; Z-third direction. Detailed Implementation

[0033] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated 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 the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0034] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0037] Reference Figure 1 The diagram shows a structural schematic of a heat exchange plate 1 according to an embodiment of this application, which may specifically include a main body 11.

[0038] The main body 11 is a plate-like structure that enables heat exchange, and it is typically made of metals with good thermal conductivity, such as aluminum alloy or stainless steel. (See reference...) Figure 2 Along the first direction Y, the main body 11 is divided into a first part 111 and a second part 112 connected together. The first part 111 has multiple flow channels 114 inside, which are channels for coolant to pass through. The cross-sectional shape of the flow channels 114 can be set according to actual needs; for example, the cross-sectional shape of the flow channels 114 can be circular, rectangular, triangular, hexagonal, etc. The first part 111 is used to contact and exchange heat with the first part of the battery cell 3. In this application, the first part of the battery cell 3 is the part close to the electrode post of the battery cell 3. During the charging and discharging process of the battery cell 3, the electrode post of the battery cell 3 generates a large amount of heat, so the first part of the battery cell 3 is prone to overheating. The first part 111 of the heat exchange plate 1 contacts the first part of the battery cell 3 so that the coolant in the flow channels 114 of the first part 111 can carry away the heat from the first part of the battery cell 3.

[0039] The second part 111 is used to contact the first part of the cell 3 and exchange heat. In this application, the first part of the cell 3 is the part close to the terminal post of the cell 3. For the second part of the cell 3 that is far from the terminal post, since the heat generation of this part is relatively low, the second part 112 of the heat exchange plate can be used to contact it to ensure the fixed connection area between the heat exchange plate 1 and the cell 3. This improves the utilization rate of the coolant and reduces the waste of the coolant's cold or heat. At the same time, when the heat exchange plates 1 are used in combination, the second part 112 of the heat exchange plate 1 that does not flow into the coolant can be placed at the junction of the heat exchange plates 1 and 1. This can prevent the junction of the heat exchange plates 1 and 1 from being too cold or too hot, thereby ensuring a more balanced heat exchange effect between the heat exchange plate 1 and the cell 3. Since the second part 112 of the heat exchange plate 1 does not flow into the coolant, the heat exchange plate described in this application requires less coolant for the same volume, which helps to reduce the weight of the battery pack using the heat exchange plate 1 described in this application.

[0040] In some embodiments of this application, the heat exchange plate 1 further includes an end cap 12.

[0041] The flow channel 114 extends through the first portion 111 of the main board body 11 along the second direction X. In other words, the flow channel 114 extends along the second direction X, and both ends of the flow channel 114 extend through the first portion 111 of the main board body 11, forming openings on the surface of the main board body 11. (Refer to...) Figure 2 The second direction X is Figure 2 The X direction is shown in the figure.

[0042] Along the second direction X, the main board body 11 has a first end and a second end disposed opposite to each other in the second direction X. (Refer to...) Figure 2 and Figure 3 Both the first and second ends of the mainboard body 11 are connected to end caps 12. (Refer to...) Figure 4 The end cap 12 is provided with a through hole 121, which communicates with the flow channel 114. During use, the coolant enters the flow channel 114 connected to the through hole 121 through the through hole 121.

[0043] The first direction Y intersects the second direction X; in other words, they are not in the same direction. In this application, the first direction Y and the second direction X can be arranged at an acute angle or an obtuse angle. Alternatively, the first direction Y and the second direction X can also be arranged at a right angle, in which case the first direction Y and the second direction X are orthogonal.

[0044] Along the second direction X, the length of the first portion 111 is greater than the length of the second portion 112, and a notch is formed between the end of the first portion 111 and the end of the second portion 112. In other words, at least one of the first end and the second end of the main board body 11 is provided with a notch 113, and the notch 113 communicates with the flow channel 114. In this embodiment, the notch 113 may be provided only on the first end of the main board body 11. Due to the presence of the notch 113, a portion of the side surface of the first end of the main board body 11 in the second direction X is recessed, and this recessed portion is the end of the second portion 112. The notch 113 may also be provided only on the second end of the main board body 11. Due to the presence of the notch 113, a portion of the side surface of the second end of the main board body 11 in the second direction X is recessed, and this recessed portion is the end of the second portion 112. The notch 113 can also be provided on both the first and second ends of the motherboard body 11. Due to the presence of the notch 113, there is a partial recess on the side of both the first and second ends of the motherboard body 11 in the second direction X. This recessed part is the end of the second part 112. The end cap 12 covers the part of the first and second ends where the notch 113 is not provided.

[0045] In this application, at least one through hole is provided in the second part 112. The through hole extends through the second part 112 along the second direction X to reduce the weight of the heat exchange plate 1. The number of through holes depends on actual needs, and no coolant flows through them.

[0046] During use, the heat exchange plate 1 can be bonded to a side of an external device using adhesives, fasteners, or other methods to facilitate heat exchange and thus change the temperature of the external device. Since coolant does not flow into the second part 112 of the heat exchange plate 1, the amount of coolant flowing into the heat exchange plate 1 during use is relatively small. This prevents excessive load on the external device and also helps ensure the reliability of the connection between the heat exchange plate 1 and the external device, thereby ensuring a good fit between the heat exchange plate 1 and the external device. The notch 113 also reduces the weight of the heat exchange plate 1, further contributing to its lightweight design.

[0047] During use, the portion of the heat exchange plate 1 into which coolant flows can be attached to the first part of the battery cell 3 to ensure that the first part of the battery cell 3 has a relatively good heating or cooling effect. This improves the utilization rate of the coolant and effectively reduces the waste of coolant's cold or heat capacity. When the heat exchange plate 1 is used in combination with other heat exchange plates 1, the second portion 112 of the heat exchange plate 1 that does not have coolant flowing into it can be placed at the junction of the heat exchange plates 1 and 1. This can prevent the junction of the heat exchange plates 1 and 1 from becoming too cold or too hot, thereby ensuring a more balanced heat exchange effect between the heat exchange plate 1 and the external equipment.

[0048] In some embodiments of this application, the main body 11 is preferably made of aluminum alloy, specifically 3-series or 6-series aluminum alloy. This further reduces the weight of the heat exchange plate 1 and also facilitates the processing and molding of the main body 11 by extrusion molding. The end cap 12 can be made of non-metallic materials, specifically nylon materials such as polyhexamethylene adipamide, or other plastic materials.

[0049] The first part 111 has end caps 12 connected to its two opposite ends along the second direction X. Specifically, the flow channel 114 on the first part 111 communicates with the through hole 121 on the end cap 12, and the through hole on the second part 112 communicates with the notch 113. During use, coolant can flow into the flow channel 114 of the first part 111, but coolant cannot flow into the through hole of the second part 112. The notch 113 further facilitates the installation of the end cap 12 on the first part 111, and also allows the main body 11 to avoid some external structures during use. For example, when the heat exchange plate 1 is used in a battery pack, the notch 113 on the heat exchange plate 1 can avoid internal reinforcing ribs, beams, and other structures of the battery pack.

[0050] It should be noted that the number and position of notches 113 on the main board 11 can be determined according to actual needs. For example, the main board can be divided into a first part 111, a second part 112, and a third part, with the third part having the same configuration as the first part 111, both ends of which are equipped with end caps 12. The second part 112 connects the first part 111 and the third part in the first direction Y. In use, coolant flows into both the first part 111 and the third part, while coolant does not flow into the second part 112. Alternatively, the main board can be divided into a first part 111, a second part 112, a third part, and a fourth part, with the third part having the same configuration as the first part 111, both ends of which are equipped with end caps 12. The second part 112 has the same configuration as the fourth part, with both ends connected to notches 113. The second part 112 connects the first part 111 and the third part in the first direction Y, and the fourth part connects to the side of the third part opposite to the second part 112 along the first direction Y. During use, the first part 111 and the third part both flow into the coolant, while the second part 112 and the fourth part do not flow into the coolant.

[0051] In some embodiments of this application, the end cap 12 is provided with a cavity structure 122. The cavity structure 122 is connected to the flow channel 114 and the through hole 121 respectively. The coolant flowing into the through hole 121 first passes through the cavity structure 122, and then flows from the cavity structure 122 into each flow channel 114. This simplifies the structure of the end cap 12 and helps to reduce the processing cost of the end cap 12. On the other hand, the cavity structure 122 can also play a certain buffering role for the flow of coolant. In other embodiments of this application, the end cap 12 can be provided with multiple through holes 121, and the multiple through holes 121 correspond one-to-one with the flow channel 114 within the coverage area of ​​the end cap 12 and are individually connected.

[0052] In some embodiments of this application, the end cap 12 can be formed in two parts, specifically including a first cover 123 and a second cover 124. The first cover 123 is fixedly mounted on the main body 11 and provides a mounting base for the second cover 124. The second cover 124 is sealed to the first cover 123, and a cavity structure 122 is disposed on the second cover 124. This two-part forming method reduces the processing difficulty of the end cap 12 and facilitates the processing of complex structures on the end cap 12.

[0053] In some embodiments of this application, the first cover 123 can be directly fixed to the main body 11 by in-mold injection molding. That is, the mold is first fixed to the main body 11, and then the first cover 123 is directly injection molded onto the main body 11. The first cover 123 and the main body 11 can also be fixed by welding or bonding. The second cover 124 and the first cover 123 can be sealed and fixed by welding, and the welding process can be laser welding or ultrasonic welding, etc. In other embodiments of this application, a sealing ring or other structure can be added between the first cover 123 and the second cover 124 to improve the sealing performance. The end cap 12 can also be integrally molded and fixed and sealed on the main body 11 by bonding, welding, or other methods.

[0054] In some embodiments of this application, a conductive element 13 is provided on the end cap 12. The first end of the conductive element 13 is electrically connected to the main board 11, and the second end of the conductive element 13 extends to the side of the end cap 12 facing away from the main board 11 for grounding. Specifically, the conductive element 13 can be a sheet-like structure. The first end of the conductive element 13 can directly contact the main board 11 to achieve a conductive connection, or it can achieve a conductive connection through a conductive structure such as a wire. The second end of the conductive element 13 can be grounded through a wire. This prevents the main board 11 from becoming energized. When the heat exchange plate 1 is applied to charged equipment such as a battery pack, this improves the overall safety of the component.

[0055] Reference Figure 3 In some embodiments of this application, the first end of the conductive element 13 includes a pair of overhanging elastic clips 131. The elastic clips 131 can be inserted into the flow channel 114 to achieve a conductive connection between the first end of the conductive element 13 and the main board body 11. Specifically, the conductive element 13 can be a sheet-like structure, with a through groove formed on the first end of the conductive element 13. The depth direction of the through groove is set along the thickness direction of the conductive element 13, the width direction of the through groove is set along the width direction of the conductive element 13, and the width direction of the through groove is set along the length direction of the conductive element 13. The through groove divides the first end of the conductive element 13 into two overhanging arms, and the ends of the overhanging arms have protrusions. The overhanging arms and the protrusions together constitute the aforementioned elastic clips 131. During installation, the conductive element 13 is inserted into the flow channel 114 along the second direction X, and the elastic clips 131 are interference-fitted into the flow channel 114 to achieve a conductive connection between the conductive element 13 and the main board body 11. This installation method is relatively simple, simplifying the assembly process of the end cover 12 and the main body 11, thereby reducing the assembly and processing costs of the heat exchange plate 1. At the same time, under the elastic force of the elastic buckle 131, a relatively reliable conductive connection can be ensured between the conductive component 13 and the main body 11.

[0056] Reference Figure 3 and Figure 4In some embodiments of this application, the end cap 12 is provided with a mounting member 14. The mounting member 14 can provide a mounting base for the installation of some accessories. Specifically, the accessory can be a connector for the conductive element 13, which is used to achieve conductivity between the conductive element 13 and the ground. In some embodiments of this application, the mounting member 14 can be an internally threaded tube pre-embedded in the end cap 12. In the first direction Y, the mounting member 14 is positioned opposite to the second end of the conductive element 13, and a connecting hole is provided on the second end of the conductive element 13, which is directly opposite to the internally threaded hole of the internally threaded tube. The connector can be a grounding wire connected to the ground, and the end of the grounding wire has a terminal with a hole. During installation, the terminal of the grounding wire can be threaded together with the conductive element 13 using screws and fixedly installed on the pre-embedded mounting member 14. This installation is convenient and can achieve a stable conductive connection between the conductive element 13 and the connector, thereby ensuring the grounding effect of the conductive element 13.

[0057] In some embodiments of this application, an insulating layer is provided on the outer surface of the motherboard body 11. The insulating layer can ensure good insulation protection between the motherboard body 11 and the battery. In the embodiments described in this application, the insulating layer can specifically be a coating applied to the surface of the motherboard body 11 by electrostatic spraying, UV spraying, or other spraying processes. UV is the abbreviation for Ultra-Violet Ray. When forming the insulating layer by UV spraying, the insulating coating can be applied to the motherboard body 11 by dip coating, curtain coating, varnishing, spin coating, or even vacuum coating, and then the insulating coating can be irradiated with ultraviolet light to cure the insulating coating into a film-like insulating layer on the motherboard body 11. When forming the insulating layer by electrostatic spraying, the insulating coating can be atomized first. The atomized insulating coating becomes negatively charged under the action of a high-voltage DC electric field, and the motherboard body 11 becomes positively charged. Under the action of electrostatic force, the insulating coating covers the surface of the motherboard body 11 and forms an insulating layer.

[0058] Secondly, this application provides a battery assembly comprising multiple cell rows, a base plate 2, and multiple heat exchange plates 1 as described above. The cell rows are disposed on the base plate 2, and the heat exchange plates 1 are in contact with the cell 3. Each cell row includes multiple cell 3 arranged sequentially along a second direction X. Each cell 3 includes a cell body and an electrode post disposed within the cell body.

[0059] Specifically, a connection can be made between the base plate 2 and the heat exchange plate 1. Figure 5The diagram shows the arrangement of the multi-faceted cooling structure. At least two heat exchange plates 1 are arranged side-by-side along the third direction Z on the base plate 2; the specific number can be two, three, four, or even more. A gap is left between the heat exchange plates 1, and the battery cells are arranged within this gap. During installation, the battery cells 3 are placed on the base plate 2, with the terminals and electrical connectors of the battery cells 3 facing away from the base plate 2. The heat exchange plates 1 are attached to the sides of the rows of battery cells 3, with the first part 111 of the heat exchange plate 1 opposite to the terminals, and the second part 112 of the heat exchange plate 1 in contact with the battery cell body.

[0060] In summary, the battery assembly described in the embodiments of this application may include at least the following advantages:

[0061] During use, the heat exchange plate 1 can be bonded to the battery cell 3 using adhesives, fasteners, or other methods to facilitate heat exchange and thus change the temperature of the battery cell 3. Since the through-hole on the heat exchange plate 1, connected to the notch 113, does not allow coolant to flow in, the amount of coolant flowing into the heat exchange plate 1 during use is relatively small. This prevents excessive load on the battery cell 3 and the base plate 2, and also helps ensure the reliability of the connection between the heat exchange plate 1 and the battery cell 3, thereby ensuring that the heat exchange plate 1 adheres well to the battery cell 3. The notch 113 also reduces the weight of the heat exchange plate 1, further contributing to its lightweight design.

[0062] When the battery assembly is in use, the portion of the heat exchange plate 1 through which the coolant flows can be positioned facing away from the base plate 2. This allows for heating or cooling of the terminals and electrical connectors of the battery cell 3, ensuring optimal temperature control in these critical areas. This improves coolant utilization and effectively reduces coolant waste. The heat exchange plate 1 and base plate 2 can exchange heat with different sides of the battery cell 3. The portion of the heat exchange plate 1 not infused with coolant faces the base plate 2, preventing the junction of the heat exchange plate 1 and base plate 2 from becoming too cold or too hot. This ensures a more even temperature distribution on the battery cell 3, resulting in better charge and discharge efficiency.

[0063] Thirdly, embodiments of this application also provide a vehicle, the vehicle including any of the heat exchange plate 1 or battery assembly as described above.

[0064] For example, in the embodiments of this application, the vehicle may include small cars, medium-sized cars, sedans, trucks, trailers, CDVs (Car Derived Vans), MPVs (Multi-Purpose Vehicles), SUVs (Sport Utility Vehicles), etc. The specific type of vehicle is not limited in the embodiments of this application. The battery pack can provide energy to the vehicle described in the embodiments of this application to ensure the normal operation of the vehicle.

[0065] The vehicle described in this application embodiment may include at least the following advantages:

[0066] During vehicle operation, the heat exchange plate 1 can be bonded to the battery cell 3 using adhesives, fasteners, or other methods to facilitate heat exchange and thus change the temperature of the battery cell 3. Since the through-hole on the heat exchange plate 1, connected to the notch 113, does not allow coolant to flow in, the amount of coolant flowing into the heat exchange plate 1 during operation is relatively small. This prevents excessive load on the battery cell 3 and the base plate 2, and also helps ensure the reliability of the connection between the heat exchange plate 1 and the battery cell 3, thereby ensuring that the heat exchange plate 1 adheres well to the battery cell 3. The notch 113 also reduces the weight of the heat exchange plate 1, further achieving lightweight design. This further reduces the load on the vehicle.

[0067] When the vehicle is in use, the portion of the heat exchange plate 1 that receives coolant can be positioned facing away from the base plate 2. This allows for heating or cooling of the terminals and electrical connectors of the battery cell 3, ensuring optimal temperature control in these key areas. This improves coolant utilization and effectively reduces coolant waste. The heat exchange plate 1 and base plate 2 can exchange heat with different sides of the battery cell 3. The portion of the heat exchange plate 1 not receiving coolant faces the base plate 2, preventing the junction of the heat exchange plate 1 and base plate 2 from becoming too cold or too hot. This ensures a more even temperature distribution on the battery cell 3, resulting in better charging and discharging efficiency. This improves the vehicle's charging and discharging performance and helps reduce charging time.

[0068] 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 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.

[0069] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchange plate, characterized in that, The heat exchange plate (1) includes a main body (11); Along the first direction (Y), the main body (11) is divided into a first part (111) and a second part (112) connected together. The first part (111) is provided with a plurality of flow channels (114) for circulating coolant. The first part (111) is used to contact a first part of the battery cell (3), which is a part close to the terminal of the battery cell (3). The second part (112) is used to contact a second part of the battery cell (3), which is a part away from the terminal of the battery cell (3).

2. The heat exchange plate according to claim 1, characterized in that, The heat exchange plate (1) also includes an end cap (12); Along the second direction (X), the first part (111) has a first end and a second end opposite to each other, and both the first end and the second end are connected to the end cap (12). The flow channel (114) passes through the first part (111) along the second direction (X). The end cap (12) is provided with a through hole (121) that communicates with the flow channel (114). The first direction (Y) intersects with the second direction (X).

3. The heat exchange plate according to claim 2, characterized in that, Along the second direction (X), the length of the first part (111) is greater than the length of the second part (112), and a gap (113) is formed between the end of the first part (111) and the end of the second part (112).

4. The heat exchange plate according to claim 3, characterized in that, The second part (112) is provided with at least one through hole, which penetrates the second part (112) along the second direction (X).

5. The heat exchange plate according to any one of claims 2-4, characterized in that, The end cap (12) is provided with a cavity structure (122), which is connected to the flow channel (114) and the through hole (121).

6. The heat exchange plate according to claim 5, characterized in that, The end cap (12) includes a first cap body (123) and a second cap body (124); The first cover (123) is fixedly mounted on the main body (11), and the second cover (124) is sealed to the first cover (123); the cavity structure (122) is disposed on the second cover (124).

7. The heat exchange plate according to any one of claims 2-4, characterized in that, A conductive element (13) is provided on the end cap (12); The first end of the conductive element (13) is electrically connected to the main board body (11), and the second end of the conductive element (13) extends to the side of the end cap (12) facing away from the main board body (11) for grounding.

8. The heat exchange plate according to claim 7, characterized in that, The first end of the conductive element (13) includes a pair of overhanging elastic clips (131), which are inserted into the flow channel (114) to make the first end of the conductive element (13) electrically connected to the main board body (11).

9. The heat exchange plate according to claim 7, characterized in that, The end cap (12) is provided with a mounting member (14). In the first direction (Y), the mounting member (14) is positioned opposite to the second end of the conductive member (13). The mounting member (14) is used to connect the connector of the conductive member (13). The connector is grounded so that the conductive member (13) can be grounded.

10. The heat exchange plate according to any one of claims 1-4, characterized in that, An insulating layer is provided on the outer surface of the main body (11).

11. A battery assembly, characterized in that, The battery assembly includes multiple rows of cells, a base plate (2), and multiple heat exchange plates (1) as described in any one of claims 1-10; The battery cell array is disposed on the base plate (2), and the battery cell array includes multiple battery cells (3). The multiple battery cells (3) are arranged sequentially along the second direction (X). Each battery cell (3) includes a battery cell body and an electrode post disposed on the battery cell body. Multiple heat exchange plates (1) are distributed at intervals along a third direction (Z), and a battery array is arranged between two adjacent heat exchange plates (1). The first part (111) of the heat exchange plate (1) is opposite to the electrode post, and the second part (112) of the heat exchange plate (1) is in contact with the battery cell body.

12. A vehicle, characterized in that, It includes the heat exchange plate according to any one of claims 1-10, or the battery assembly according to claim 11.

Images