Heat exchange plate, battery cover, battery pack and electric equipment

Abstract

The utility model discloses a heat exchange plate, a battery cover, a battery pack and electric equipment, and relates to the technical field of batteries. The heat exchange plate comprises a runner plate, the runner plate is provided with a first side, the runner plate comprises a first arching area and a second arching area which arches towards the first side, the first arching area is suitable for conveying a cooling medium, and the second arching area is arranged on the peripheral side of the first arching area.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to heat exchange plates, battery covers, battery packs, and electrical equipment. Background Technology

[0002] In related technologies, in existing vehicles, at least part of the battery structure can be used as the vehicle floor. When the vehicle body and the battery are connected, the gap between the vehicle body and the battery needs to be sealed to prevent liquid from seeping into the passenger compartment of the vehicle from the gap between the vehicle body and the battery when the vehicle is wading through water. However, the seal between the vehicle body and the battery in the existing technology is unreliable, and there is a risk of water leakage inside the battery pack. Utility Model Content

[0003] The purpose of this utility model is to provide a heat exchange plate, a battery cover, a battery pack, and electrical equipment, which aims to solve the technical problem of water leakage inside the battery pack caused by unreliable sealing between the vehicle body and the battery.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, the present invention provides a heat exchange plate, the heat exchange plate including a flow channel plate having a first side, the flow channel plate including a first arched region and a second arched region arching towards the first side, the first arched region being suitable for conveying a cooling medium, and the second arched region being disposed around the periphery of the first arched region.

[0006] Since the second arched area is located around the first arched area, the second arched area can form a barrier between the outside and the first arched area, thereby preventing external impurities from entering the first arched area and reducing the risk of impurities directly contacting the inside of the battery pack.

[0007] Meanwhile, the first and second arched areas can be formed by directly stamping the heat exchange plate using its own structure, reducing cumbersome processing steps and eliminating the need for additional splicing, welding and other complex processes, which greatly shortens the production cycle and reduces production costs.

[0008] In some embodiments, the arch height of the first arched region is less than or equal to the height of the second arched region.

[0009] In some embodiments, the flow channel plate further includes a third arched region disposed around the periphery of the second arched region.

[0010] In some embodiments, the cross-section of the second arched region is inverted trapezoidal along the thickness direction of the flow channel plate.

[0011] In some embodiments, the minimum distance between the second arched region and the first arched region is the first distance.

[0012] In some embodiments, the first distance is greater than or equal to 4 mm; or; the first distance is greater than or equal to 3 mm; or; the first distance is greater than or equal to 2.5 mm.

[0013] In some embodiments, the minimum distance between the second arched region and at least one edge of the flow channel plate is the second distance.

[0014] In some embodiments, the second distance is greater than or equal to 4 mm; or, the second distance is greater than or equal to 3 mm; or, the second distance is greater than or equal to 2.5 mm.

[0015] In some embodiments, the heat exchange plate in this application further includes an anti-corrosion layer, which is disposed in the second arched region and between the second arched region and the edge of the flow channel plate.

[0016] In some embodiments, the second arched region is disposed around the outer periphery of the first arched region.

[0017] In some embodiments, at least a portion of the second arched region includes a plurality of first sub-arched regions extending from the first sub-arched regions to the edge of the flow channel plate, the first sub-arched regions being spaced apart.

[0018] In some embodiments, the second arched region includes a body and an extension connected together, the body being disposed around the first arched region, and the extension extending from the body into the region surrounded by the body.

[0019] In some embodiments, the heat exchange plate further includes a base plate located on a second side opposite to the first side of the flow channel plate and stacked with the flow channel plate; a cooling flow channel is formed between the first arched region and the base plate.

[0020] In some embodiments, at least one end of the first arched region extends through the edge of the flow channel plate, and the portion of the first arched region located at the edge forms an external port.

[0021] In some embodiments, the portion of the first arched region located at the edge is the first part, and the second arched region is provided with a segment at the location of the first part, with the first part passing through the segment.

[0022] In some embodiments, the heat exchange plate further includes a seal, which is disposed in the segmented portion and the height of the seal is consistent with the height of the second arched region along the thickness direction of the heat exchange plate.

[0023] Secondly, embodiments of this application provide a battery cover, which includes the heat exchange plate described above.

[0024] In some embodiments, the battery cover also includes a side frame connected to the perimeter of the heat exchange plate, the side frame and the heat exchange plate forming a battery housing area.

[0025] In some embodiments, the battery cover includes an insulation plate disposed on the side of the heat exchange plate away from the battery housing area, and the insulation plate and the heat exchange plate are stacked together.

[0026] In some embodiments, the insulation board has a hydrophobic layer on at least the surface opposite to the heat exchange plate.

[0027] Thirdly, this application provides a battery pack, which includes a battery cell, an upper cover plate, and a lower cover plate. The upper cover plate is the aforementioned battery cover, and the lower cover plate is connected to the upper cover plate, forming an accommodating space between the upper cover plate and the lower cover plate, in which the battery cell is housed.

[0028] Fourthly, embodiments of this application provide an electrical device, which includes the aforementioned battery pack.

[0029] The technical effects of any of the implementation methods of the second to fourth aspects mentioned above can be found in the technical effects of the corresponding implementation methods in the first aspect, and will not be repeated here. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This application provides a schematic diagram of the structure of a battery pack according to some embodiments;

[0032] Figure 2 for Figure 1 A structural schematic diagram of the upper cover plate from a first-view perspective;

[0033] Figure 3 for Figure 1 A schematic diagram of the upper cover plate from a second-view perspective;

[0034] Figure 4 A first cross-sectional view of a flow channel plate provided for some embodiments of this application;

[0035] Figure 5 A second cross-sectional view of a flow channel plate provided for some embodiments of this application;

[0036] Figure 6 A first plan view of a flow channel plate provided for some embodiments of this application;

[0037] Figure 7 This is a second plan view of a flow channel plate provided for some embodiments of this application.

[0038] Figure label:

[0039] 1. Battery pack; 2. Top cover; 3. Bottom cover; 100. Heat exchange plate; 101. Flow channel plate; 1011. First arched area; 1012. Second arched area; 1012a. First sub-arched area; 1012b. Extension; 1012c. Segmentation; 1013. Third arched area; 1014. Anti-corrosion layer; 102. Base plate; 103. Seal; 200. Side frame; 300. Insulation plate; 301. Hydrophobic layer; L1. First distance; L2. Second distance. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0041] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in actual application, provided that the relative positional relationship shown in the accompanying drawings is satisfied.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "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.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "communication" 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 direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0045] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0046] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0047] This application provides an electrical device, which can be a ship, aircraft, vehicle, etc. This application uses a vehicle as an example to illustrate the use of an electrical device.

[0048] The electrical equipment may include the equipment body, a drive motor, and a battery pack. Both the drive motor and the battery pack are connected to the equipment body. The battery pack is electrically connected to the drive motor and supplies power to the drive motor so that the drive motor can drive the equipment body to work.

[0049] For example, if the electrical device is a vehicle, then the device itself is the vehicle body. In this case, the vehicle also includes wheels connected to the vehicle body, and a drive motor connected to the wheels. After the battery pack supplies power to the drive motor, the drive motor can drive the wheels to rotate, thereby enabling the vehicle to move.

[0050] The vehicles can be pure electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, range-extended electric vehicles, etc. Vehicles can also include cars, trucks, buses, lorries, trailers, etc.

[0051] The battery pack will be described in detail below with reference to the accompanying drawings. See also... Figure 1 The batteries in battery pack 1 are lithium-ion batteries, nickel-metal hydride batteries, fuel cells, lead-acid batteries, etc. This application does not specifically limit the type of battery pack.

[0052] In some embodiments, see Figure 1The battery pack 1 includes a battery cell, an upper cover plate 2, and a lower cover plate 3. The battery cell is the part of the battery that stores electrical energy, and it achieves the storage and release of electrical energy through electrochemical reactions.

[0053] The lower cover plate 3 of the battery is connected to the upper cover plate 2, and an accommodating space is formed between the upper cover plate 2 and the lower cover plate 3. The battery cell is housed in the accommodating space. The upper cover plate 2 and the lower cover plate 3 provide physical protection for the battery cell. At the same time, the accommodating space can accurately fix the position of the battery cell.

[0054] In some embodiments, this application also provides a battery cover, which may be an upper cover 2 or a lower cover 3 of the battery pack 1. This application does not limit the specific application to this type of cover. The following description in this application uses the upper cover 2 of the battery pack 1 as an example.

[0055] In some embodiments, see Figure 2 The battery cover in this application includes a heat exchange plate 100. During the operation of the battery, the battery cell generates a certain amount of heat due to the charging and discharging reaction. The heat exchange plate 100 of the battery can conduct the heat generated by the battery cell or other components of the battery through heat convection or heat conduction, so as to ensure that the battery can work in a suitable temperature environment.

[0056] In some embodiments, see Figure 2 and combined Figure 3 The battery cover includes a side frame 200, which is connected to the edge of the heat exchange plate 100, forming a battery housing area together with the heat exchange plate 100. On one hand, the side frame 200 connects the upper cover plate 2 and the lower cover plate 3 of the battery, making the entire battery structure a tight and complete whole. On the other hand, the side frame 200 is also wrapped around the battery cell, providing a certain degree of protection for the cell.

[0057] The side frame 200 can be a one-piece molded frame. One side of the side frame 200 is connected to the upper cover plate 2 of the battery pack 1, and the other side of the side frame 200 is connected to the lower cover plate 3 of the battery pack 1. Of course, the side frame 200 can include a first part and a second part. The first part is connected to the heat exchange plate 100 to form the upper cover plate 2 of the battery pack 1, and the second part is connected to the bottom plate 102 of the lower cover plate 3 of the battery pack 1 to form the overall frame of the lower cover plate 3. The first part and the second part can be welded or connected by multiple lifting lugs.

[0058] In some embodiments, see Figure 2 and combined Figure 3 The battery cover includes a heat insulation plate 300, which is located on the side of the heat exchange plate 100 away from the battery housing area, and the heat insulation plate 300 and the heat exchange plate 100 are stacked together.

[0059] When the battery is working, the cell generates heat. The heat exchange plate 100 will dissipate heat for the battery according to the battery's working state. In order to prevent the heat exchange plate 100 from dissipating heat to the components on the side away from the battery housing area, the insulation plate 300 is set on this side to avoid wasting the heat dissipation capacity of the heat exchange plate 100 and ensure that the heat exchange plate 100 only dissipates heat to the cell.

[0060] In some embodiments, see Figure 2 and combined Figure 3 The insulation board 300 has a hydrophobic layer 301 on the surface at least away from the heat exchange plate 100.

[0061] For example, the insulation board 300 can be foam cotton, and the hydrophobic layer 301 can be a hydrophobic film wrapped on the surface of the foam cotton. The material of the hydrophobic film can be aluminum-plastic film, PET or other materials with no moisture absorption.

[0062] In this way, the insulation board 300 will only serve the purpose of heat preservation. Under the action of the hydrophobic layer 301, the insulation board 300 will not absorb water. This can effectively avoid the problem of large-area water absorption and water retention of the insulation board 300, thereby preventing the surface of the heat exchange plate 100 from being corroded due to long-term exposure to a humid environment.

[0063] In some embodiments, see Figure 2 and combined Figure 4 The heat exchange plate 100 includes a flow channel plate 101, which has a first side. The flow channel plate 101 includes a first arched region 1011 and a second arched region 1012 that arches toward the first side. The first arched region 1011 is adapted to transport a cooling medium, and the second arched region 1012 is disposed around the periphery of the first arched region 1011.

[0064] The heat exchange plate 100 is provided with a first arched area 1011 and a second arched area 1012. The widths of the first arched area 1011 and the second arched area 1012 are consistent. The processing technology is simple, which greatly simplifies the processing process, effectively reduces production costs, and improves production efficiency.

[0065] The first arched region 1011 and the second arched region 1012 both protrude in the same direction in an arch shape, which can effectively enhance the overall strength of the heat exchange plate 100.

[0066] For example, the first arched region 1011 can directly serve as a flow channel for the cooling medium, through which cooling medium such as cooling water or air flows to achieve efficient heat exchange.

[0067] Another example is that the cooling medium, such as cooling water or air, flows in a dedicated cooling pipe, and the first arched area 1011 serves to house the cooling pipe, providing a reasonable layout space for the cooling system and ensuring stable operation of the cooling function.

[0068] Based on the above, the first arched region 1011 can smoothly transfer cooling media such as cooling water and air. The cooling media circulates within the first arched region 1011, effectively carrying away the large amount of heat generated during battery operation, thereby achieving efficient heat exchange and ensuring that the battery is always maintained within a suitable operating temperature range.

[0069] The second arched area 1012 can play a supporting and buffering role. When the battery pack 1 is impacted by an external foreign object from the side, the second arched area 1012 can first bear and disperse these impact forces, reducing the risk of direct damage to the heat exchange plate 100 and the first arched area 1011 caused by the external foreign object. As a result, this application significantly improves the impact resistance of the heat exchange plate 100, provides a reliable protective barrier for the entire battery pack 1, and thus improves the overall safety performance of the battery pack 1.

[0070] Furthermore, the second arched area 1012 prevents external dirt and water from entering the first arched area 1011, thus preventing interference with the cooling medium and ensuring its normal heat exchange function. In addition, the second arched area 1012 effectively prevents the intrusion of foreign objects and water from the side, thus avoiding corrosion of the first arched area 1011. This significantly improves the overall sealing of the battery pack 1, extends its service life, and ensures its stable operation in various complex environments.

[0071] In some embodiments, see Figure 2 and combined Figure 4 The arch height of the first arched region 1011 is less than or equal to the height of the second arched region 1012.

[0072] Understandably, along the thickness direction of the heat exchange plate 100, the second arched region 1012 only needs to have a certain degree of arching on the surface of the heat exchange plate 100 to effectively protect the first arched region 1011 from the side. Even if the arch height does not need to be too high, it can block the risk first when facing potential external impacts or damage, thereby ensuring the integrity of the first arched region 1011, maintaining its normal function of conveying cooling medium, and ensuring the stable operation of the entire heat exchange system.

[0073] This application provides an example where the height of the first arched region 1011 is equal to the height of the second arched region 1012. In this case, both the first arched region 1011 and the second arched region 1012 can simultaneously contact the insulation board 300. While providing protection, the second arched region 1012 can also buffer external environmental interference through contact with the insulation board 300.

[0074] Furthermore, the second arched area 1012 is a fully enclosed flow channel that can completely surround the first arched area 1011. This can prevent foreign objects and mud from entering the medium flow channel area from the edges of the cold plate under certain operating conditions, which would damage or corrode the structure of the first arched area 1011, and also prevent water from entering the first arched area 1011 and causing risks.

[0075] In some embodiments, see Figure 4 and combined Figure 5 The flow channel plate 101 also includes a third arched region 1013, which is located around the second arched region 1012.

[0076] The third arched region 1013 works in conjunction with the second arched region 1012 to not only enhance the overall strength of the flow channel plate 101 in terms of mechanical structure and disperse pressure from different directions, but also provide two layers of protection for the first arched region 1011 together with the second arched region 1012, thereby improving the reliability of the heat exchange plate 100.

[0077] Understandably, similar to the second arched region 1012, the third arched region 1013 only needs to have a certain degree of arching on the surface of the heat exchange plate 100 to effectively protect the first arched region 1011 from the side. Even if the arch height does not need to be too high, it can block the risk first when facing potential external impacts or damage, thereby ensuring the integrity of the first arched region 1011, maintaining its normal function of conveying cooling medium, and ensuring the stable operation of the entire heat exchange system.

[0078] This application provides an example where the height of the first arched region 1011 is equal to the height of the second arched region 1012. In this case, both the first arched region 1011 and the second arched region 1012 can simultaneously contact the insulation board 300. While providing protection, the second arched region 1012 can also buffer external environmental interference through contact with the insulation board 300.

[0079] In some embodiments, see Figure 5 Along the thickness direction of the flow channel plate 101, the cross section of the second arched region 1012 is an inverted trapezoid.

[0080] It should be noted that the inverted trapezoid mentioned in this application is not a standard geometric inverted trapezoid in the strict sense, but rather a similar shape, roughly presenting an inverted trapezoidal form that is wider at the top and narrower at the bottom.

[0081] Both the second arched region 1012 and the third arched region 1013 can be directly stamped and formed, with a high degree of integration. Direct stamping reduces complex processing steps, greatly shortens the production cycle, effectively improves production efficiency, and reduces production costs. Moreover, the high degree of integration reduces the number of connection points between components, which not only enhances the stability and reliability of the heat exchange plate 100, but also reduces the risk of failure caused by improper component connections.

[0082] In some embodiments, at least one of the two sides of the cross section of the second arched region 1012 can be an arc-shaped side, with the arc-shaped side recessed toward the receiving area enclosed by the second arched region 1012. The radius of the arc-shaped side is greater than or equal to 1 mm and less than or equal to 10 mm. Alternatively, the arc-shaped side is a gradually changing arc-shaped edge with an initial radius of 1 mm, gradually transitioning to 10 mm.

[0083] The curved sides allow for a uniform and stable flow velocity distribution when foreign objects flow through the channel, effectively avoiding dead zones in the water flow.

[0084] As a result, external impurities such as water are unlikely to remain on the surface of the second arched area 1012, and solid particles such as mud and sand will not accumulate in the second arched area 1012. This ensures the long-term cleanliness and unobstructed flow of the second arched area 1012 and the heat exchange plate 100, reduces the risk of system failure caused by impurity accumulation, and extends the service life of the battery pack 1.

[0085] In some embodiments, see Figure 6 The minimum distance between the second arched region 1012 and the first arched region 1011 is the first distance L1.

[0086] With the first distance L1 present, it is effectively ensured that the second arched region 1012 does not interfere with the cooling efficiency of the cooling medium in the first arched region 1011 on the battery cell. The cooling medium can flow unimpeded along a predetermined path in the first arched region 1011, stably and efficiently dissipating heat and cooling the battery cell, thereby maintaining the battery cell within a suitable operating temperature range, ensuring stable battery cell performance, extending battery cell lifespan, and laying a solid foundation for the safe and reliable operation of the entire battery pack 1.

[0087] For example, the first distance L1 is greater than or equal to 4 mm; or; the first distance L1 is greater than or equal to 3 mm; or; the first distance L1 is greater than or equal to 2.5 mm.

[0088] It should be noted that the numerical range of the first distance L1 given in this application is merely an exemplary limitation for the purpose of facilitating understanding and explanation of the relevant technical principles, and should not be regarded as an absolute limitation on all cases.

[0089] In some embodiments, see Figure 6 The minimum distance between the second arched region 1012 and at least one edge of the flow channel plate 100 is the second distance L2.

[0090] The existence of the second distance L2 provides the necessary spatial basis for the installation of the heat exchange plate 100. For example, bolt holes can be provided in the space of the second distance L2 to allow the heat exchange plate 100 to be connected to other components of the battery pack 1.

[0091] For example, the second distance L2 is greater than or equal to 4 mm; or, the second distance L2 is greater than or equal to 3 mm; or, the second distance L2 is greater than or equal to 2.5 mm.

[0092] It should be noted that the numerical range of the second distance L2 given in this application is merely an exemplary limitation made for the purpose of facilitating understanding and explaining the relevant technical principles, and should not be regarded as an absolute limitation on all situations.

[0093] It should be noted that when the third arched region 1013 in this application exists, the second distance L2 refers to the minimum distance between the third arched region 1013 and at least one edge portion.

[0094] In some embodiments, see Figure 5 The heat exchange plate 100 also includes an anti-corrosion layer 1014, which is disposed in the second arched region 1012 and between the second arched region 1012 and the edge of the flow channel plate 101. It should be noted that when the third arched region 1013 of this application exists, the anti-corrosion layer 1014 is disposed in the third arched region 1013 and between the third arched region 1013 and the edge of the flow channel plate 101.

[0095] The second arched area 1012 protruding from the surface of the heat exchange plate 100 and the edge area of ​​the heat exchange plate 100 are all treated with anti-corrosion coating, eliminating the need to apply an anti-corrosion layer 1014 to the entire surface of the heat exchange plate 100, thus reducing costs while achieving anti-corrosion protection. Of course, an anti-corrosion layer 1014 can also be applied to the surface of the first arched area 1011 to improve the service life of the cold plate.

[0096] In some embodiments, see Figure 6 The second arched region 1012 is arranged around the outer periphery of the first arched region 1011.

[0097] Based on this, the second arched region 1012 can provide all-round protection for the first arched region 1011. The second arched region 1012 can completely block external impacts, collisions and other potential physical damage, preventing them from directly acting on the first arched region 1011, ensuring the stable flow of the cooling medium in the first arched region 1011, and maintaining the efficient cooling function of the battery cell.

[0098] In some embodiments, see Figure 6 and combined Figure 7 At least a portion of the second arched region 1012 includes a plurality of first sub-arched regions 1012a extending from the first sub-arched regions 1012a to the edge of the flow channel plate 101, and the first sub-arched regions 1012a are spaced apart.

[0099] When there is a large gap between the first arched region 1011 and the edge of the heat exchange plate 100, the first sub-arched region 1012a can be stacked within this gap range to protect the first arched region 1011.

[0100] In this way, the first sub-arched region 1012a not only fills the gap and effectively avoids direct interference from external factors to the first arched region 1011, but also, regardless of external physical impacts or external impurities, the first sub-arched region 1012a can buffer and disperse these adverse effects with its own structure, ensuring that the first arched region 1011 can continuously and stably perform its cooling function, thereby ensuring the efficient and reliable operation of the entire thermal management system.

[0101] In some embodiments, see Figure 6 and combined Figure 7 The second arched region 1012 includes a connected body and an extension 1012b. The body is disposed around the first arched region 1011, and the extension 1012b extends from the body into the region surrounded by the body.

[0102] When there is a large gap between the first arched regions 1011, the extension 1012b can extend into this gap. On the one hand, the extension 1012b integrates into the gap, effectively enhancing the overall structural strength of the heat exchange plate 100. The extension 1012b enables the heat exchange plate 100 to maintain its shape more stably when subjected to complex stresses, such as stresses generated by thermal expansion and contraction, and stresses caused by external mechanical vibrations, avoiding deformation and damage due to stress concentration, thus greatly improving the durability of the heat exchange plate 100. On the other hand, the extension 1012b surrounds the first arched region 1011, forming a protective barrier for the first arched region 1011, ensuring the integrity of the first arched region 1011 and ensuring the normal flow of its cooling medium.

[0103] In some embodiments, see Figure 5 and combined Figure 7 The heat exchange plate 100 also includes a base plate 102, which is located on the second side of the flow channel plate 101 opposite to the first side and is stacked with the flow channel plate 101; a cooling flow channel is formed between the first arched area 1011 and the base plate 102.

[0104] When the cooling medium circulates in the cooling channel formed between the first arched region 1011 and the base plate 102, it can efficiently remove heat and achieve precise cooling of the battery cell. At the same time, the base plate 102 is located on the second side of the channel plate 101, and this second side is exactly opposite to the first side of the channel plate 101. The two are arranged in an orderly manner in a stacked manner to form a tightly integrated whole structure.

[0105] Of course, the base plate 102 and the second arched area 1012 can also form a hollow flow channel.

[0106] In some embodiments, see Figure 6 and combined Figure 7 At least one end of the first arched region 1011 extends through the edge of the flow channel plate 101, and the portion of the first arched region 1011 located at the edge forms an external port.

[0107] Based on this, the cooling medium can flow in through the external port, flow along the channel formed by the first arched area 1011 and the base plate 102, absorb heat, and then flow out through the external port, repeating the cycle. This cycle effectively achieves heat transfer and dissipation, ensuring that the relevant equipment operates stably at a suitable temperature, and greatly improving the thermal management efficiency of the battery pack 1.

[0108] It is understood that the external port includes at least one inlet and at least one outlet to allow the cooling medium to flow smoothly.

[0109] In some embodiments, see Figure 6 and combined Figure 7 The first arched region 1011 is located at the edge of the first part, and the second arched region 1012 is provided with a segment 1012c at the location of the first part, and the first part passes through the segment 1012c.

[0110] The segment 1012c serves as a clearance opening, avoiding potential spatial interference between the second arched area 1012 and the external port. This ensures that the cooling medium can smoothly enter and exit at the external port without being obstructed by the second arched area 1012, thereby guaranteeing the efficiency and stability of the entire cooling medium circulation.

[0111] In some embodiments, see Figure 6 and combined Figure 7The heat exchange plate 100 also includes a seal 103, which is located in the segment 1012c and the height of the seal 103 is consistent with the second arched region 1012 along the thickness direction of the heat exchange plate 100.

[0112] On the one hand, the seal 103 effectively fills the gap in the segment 1012c, preventing impurities from entering the first arched region 1011 from the segment 1012c. On the other hand, the seal 103, which is at the same height as the second arched region 1012, can ensure sealing while preventing the segment 1012c from having a negative impact on the overall structure of the heat exchange plate 100.

[0113] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A heat exchange plate (100), characterized in that, include: The flow channel plate (101) has a first side, the flow channel plate (101) includes a first arched region (1011) and a second arched region (1012) arched toward the first side, the first arched region (1011) is adapted to convey a cooling medium, and the second arched region (1012) is disposed on the periphery of the first arched region (1011).

2. The heat exchange plate (100) according to claim 1, characterized in that, The arch height of the first arched region (1011) is less than or equal to the height of the second arched region (1012).

3. The heat exchange plate (100) according to claim 2, characterized in that, The flow channel plate (101) also includes a third arched region (1013), which is located around the second arched region (1012).

4. The heat exchange plate (100) according to claim 3, characterized in that, Along the thickness direction of the flow channel plate (101), the cross section of the second arched region (1012) is inverted trapezoidal.

5. The heat exchange plate (100) according to claim 1, characterized in that, The minimum distance between the second arched region (1012) and the first arched region (1011) is the first distance (L1).

6. The heat exchange plate (100) according to claim 5, characterized in that, The first distance (L1) is greater than or equal to 4 mm; or; the first distance (L1) is greater than or equal to 3 mm; or; the first distance (L1) is greater than or equal to 2.5 mm.

7. The heat exchange plate (100) according to claim 1, characterized in that, The minimum distance between the second arched region (1012) and at least one edge of the flow channel plate (101) is the second distance (L2).

8. The heat exchange plate (100) according to claim 7, characterized in that, The second distance (L2) is greater than or equal to 4 mm; or, the second distance (L2) is greater than or equal to 3 mm; or, the second distance (L2) is greater than or equal to 2.5 mm.

9. The heat exchange plate (100) according to claim 1, characterized in that, Also includes: A corrosion-resistant layer (1014) is provided in the second arched region (1012) and between the second arched region (1012) and the edge of the flow channel plate (101).

10. The heat exchange plate (100) according to claim 1, characterized in that, The second arched region (1012) is arranged around the outer periphery of the first arched region (1011).

11. The heat exchange plate (100) according to claim 1, characterized in that, At least a portion of the second arched region (1012) includes a plurality of first sub-arched regions (1012a) extending from the first sub-arched regions (1012a) to the edge of the flow channel plate (101), the first sub-arched regions (1012a) being spaced apart.

12. The heat exchange plate (100) according to claim 1, characterized in that, The second arched region (1012) includes a connected body and an extension (1012b), the body being disposed around the first arched region (1011), and the extension (1012b) extending from the body into the region surrounded by the body.

13. The heat exchange plate (100) according to claim 1, characterized in that, The heat exchange plate (100) also includes: The base plate (102) is located on the second side of the flow channel plate (101) opposite to the first side and is stacked with the flow channel plate (101); a cooling flow channel is formed between the first arched area (1011) and the base plate (102).

14. The heat exchange plate (100) according to claim 13, characterized in that, At least one end of the first arched region (1011) extends through the edge of the flow channel plate (101), and the portion of the first arched region (1011) located at the edge forms an external port.

15. The heat exchange plate (100) according to claim 14, characterized in that, The portion of the first arched region (1011) located at the edge is the first part, and the second arched region (1012) has a segmented portion (1012c) at the location of the first part, with the first part passing through the segmented portion (1012c).

16. The heat exchange plate (100) according to claim 15, characterized in that, Also includes: A sealing element (103) is provided on the segment (1012c) and along the thickness direction of the heat exchange plate (100), the height of the sealing element (103) is consistent with the second arched region (1012).

17. A battery cover, characterized in that, include: The heat exchange plate (100) according to any one of claims 1-16.

18. The battery cover according to claim 17, characterized in that, include: A side frame (200) is connected around the edge of the heat exchange plate (100), and the side frame (200) and the heat exchange plate (100) form a battery housing area.

19. The battery cover according to claim 18, characterized in that, include: A heat insulation plate (300) is disposed on the side of the heat exchange plate (100) away from the battery housing area, and the heat insulation plate (300) and the heat exchange plate (100) are stacked together.

20. The battery cover according to claim 19, characterized in that, The insulation board (300) has a hydrophobic layer (301) on at least the surface opposite to the heat exchange plate (100).

21. A battery pack (1), characterized in that, include: The upper cover (2) is the battery cover according to any one of claims 17-20; The lower cover plate (3) is connected to the upper cover plate (2), and an accommodating space is formed between the upper cover plate (2) and the lower cover plate (3); The battery cell is housed within the aforementioned receiving space.

22. An electrical appliance, characterized in that, include: The battery pack (1) according to claim 21.

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