Heat exchange plate, and battery assembly and vehicle having same

Abstract

A heat exchange plate (100), and a battery assembly and a vehicle having same. The heat exchange plate (100) comprises: a heat exchange plate body (10), a heat exchange surface (11) being formed on the heat exchange plate body (10), and a cooling flow channel (13) and a water inlet (14) and a water outlet (15) in communication with the cooling flow channel (13) being formed inside the heat exchange plate body (10), the cooling flow channel (13) comprising a water inlet flow path (131) and a water outlet flow path (132), the water inlet flow path (131) being in communication with the water inlet (14), the water outlet flow path (132) being in communication with the water outlet (15), and the water inlet flow path (131) and / or the water outlet flow path (132) being provided at the edge of the heat exchange plate body (10); and plurality of branch flow paths (133), each branch flow path (133) being connected to the water inlet flow path (131) and the water outlet flow path (132) and directly facing the heat exchange surface (11) so as to be suitable for heat exchange of a battery pack.

Description

Heat exchange plate, battery assembly and vehicle having the same

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202311864737.3 and application date December 29, 2023, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to, but is not limited to, the technical field of heat exchange plates, and specifically to a heat exchange plate, a battery assembly, and a vehicle having the same. Background Art

[0004] In related technologies, battery packs are typically used in conjunction with structures such as heat exchange plates. These plates exchange heat with the battery pack, maintaining the optimal operating temperature and thereby improving its performance. The heat exchange plate is configured with multiple heat exchange zones, each capable of independently exchanging heat with the battery cells within the battery pack. However, the flow channel layout within the heat exchange plate can affect its heat exchange efficiency. Summary of the Invention

[0005] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0006] One purpose of the present application is to provide a heat exchange plate that has higher heat exchange efficiency when exchanging heat for a battery pack.

[0007] Another object of the present application is to provide a battery assembly.

[0008] Another object of the present application is to provide a vehicle.

[0009] According to the embodiment of the present application, the heat exchange plate includes: a heat exchange plate body, a heat exchange surface suitable for facing the battery pack is formed on the heat exchange plate body, a cooling flow channel and a water inlet and a water outlet connected to the cooling flow channel are formed inside the heat exchange plate body; wherein the cooling flow channel includes: a water inlet flow path and a water outlet flow path, the water inlet flow path is connected to the water inlet, the water outlet flow path is connected to the water outlet, and the water inlet flow path and / or the water outlet flow path are arranged at the edge of the heat exchange plate body; a branch flow path, the branch flow path is constructed into a plurality of parallel and spaced apart branches, each branch flow path is connected to the water inlet flow path and the water outlet flow path and faces the heat exchange surface so as to be suitable for heat exchange with the battery pack.

[0010] According to the heat exchange plate of the embodiment of the present application, the heat exchange plate exchanges heat with the battery pack through the heat exchange surface, and multiple branch flow paths of the cooling channel are directly opposite to the heat exchange surface, thereby improving the heat exchange efficiency. At the same time, the water inlet flow path and / or the water outlet flow path are arranged at the edge of the heat exchange plate body so that the coolant will not affect the heat exchange of the heat exchange surface with the battery pack when flowing in and out.

[0011] A battery assembly according to an embodiment of the present application includes:

[0012] A battery pack, wherein the battery pack is arranged in sequence in a first direction and each battery pack is provided with a plurality of battery cells arranged in sequence in a second direction;

[0013] Heat exchange plate, the heat exchange plate is constructed as the above-mentioned heat exchange plate, and the heat exchange plate is directly opposite to the battery pack;

[0014] An extension plate is formed with an extension channel communicating with the water inlet and the water outlet.

[0015] According to the battery assembly of the embodiment of the present application, the water outlet and water inlet of the heat exchange plate can be extended by an extension plate, so that the water outlet and water inlet of the heat exchange plate can exceed the frame of the battery assembly, thereby making it easier for the coolant to enter the cooling channel for heat dissipation and making it simpler to set the heat exchange plate in the battery assembly.

[0016] A vehicle according to an embodiment of the present application includes: the above-mentioned battery assembly.

[0017] The vehicle according to the embodiment of the present application is provided with the battery assembly of the above embodiment, so the vehicle has high operating stability.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application.

[0019] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of a heat exchange plate according to some embodiments of the present application;

[0021] FIG2 is a schematic diagram of the heat exchange plate body in FIG1 ;

[0022] FIG3 is a schematic diagram of the first heat exchange zone in FIG2 ;

[0023] FIG4 is a schematic diagram of the second heat exchange zone in FIG2 ;

[0024] FIG5 is a schematic diagram of the third heat exchange zone in FIG2 ;

[0025] FIG6 is a schematic diagram of the fourth heat exchange zone in FIG2 . DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0028] The heat exchange plate 100 according to an embodiment of the present application is described below with reference to FIG. 1 to FIG. 6 .

[0029] In this embodiment, the first direction can be constructed as the length direction of the battery assembly, the second direction can be constructed as the width direction of the battery assembly, and the third direction can be constructed as the height direction of the battery assembly. Of course, in other embodiments, the first direction, the second direction and the third direction can be constructed as other directions of the battery assembly, which is not limited here.

[0030] As shown in Figures 1 to 6, the heat exchange plate 100 according to the embodiment of the present application includes: a heat exchange plate body 10, on which a heat exchange surface 11 suitable for facing the battery pack is formed, a cooling channel 13 and a water inlet 14 and a water outlet 15 connected to the cooling channel 13 are formed inside the heat exchange plate body 10; wherein the cooling channel 13 includes: an inlet flow path 131 and an outlet flow path 132, the inlet flow path 131 is connected to the water inlet 14, the outlet flow path 132 is connected to the water outlet 15, and the inlet flow path 131 and / or the outlet flow path 132 are arranged at the edge of the heat exchange plate body 10; a branch flow path 133, the branch flow paths 133 are constructed to be parallel to each other and spaced apart, each branch flow path 133 is connected to the inlet flow path 131 and the outlet flow path 132 and faces the heat exchange surface 11 so as to be suitable for heat exchange with the battery pack.

[0031] Thus, the heat exchange plate 100 exchanges heat with the battery pack through the heat exchange surface 11, and the multiple branch flow paths 133 of the cooling channel 13 are directly opposite to the heat exchange surface 11, thereby improving the heat exchange efficiency. At the same time, the water inlet flow path 131 and / or the water outlet flow path 132 are arranged at the edge of the heat exchange plate body 10 so that the coolant will not affect the heat exchange of the battery pack by the heat exchange surface 11 when flowing in and out.

[0032] As an example, the heat exchange surface 11 formed in the heat exchange plate body 10 can exchange heat for the battery pack. At the same time, the cooling channel 13 formed in the heat exchange plate body 10 includes an inlet flow path 131, an outlet flow path 132 and a branch flow path 133, and the cooling flow path 13 is connected to the water inlet 14 and the water outlet 15, so that the coolant enters the cooling flow channel 13 through the water inlet 14 to exchange heat for the battery pack. Among them, the inlet flow path 131 and the outlet flow path 132 are located at the edge of the heat exchange plate body 10, which can make it easier to connect the branch flow path 133 with the inlet flow path 131 and the outlet flow path 132, and the branch flow paths 133 are parallel to each other and are arranged in multiple intervals, which can make the heat exchange efficiency of the heat exchange plate 100 higher, and the branch flow paths 133 will be opposite to the heat exchange surface 11 so that it can exchange heat for the battery pack.

[0033] Furthermore, the cooling channel 13 formed in the heat exchange plate body 10 is connected to the water inlet 14 and the water outlet 15, so that the coolant can enter the cooling channel 13 through the water inlet 14 and be discharged from the water outlet 15 after the heat exchange is completed. The cooling channel 13 includes: an inlet flow path 131, an outlet flow path 132 and a branch flow path 133, so that the coolant can flow in the cooling channel 13 to exchange heat for the battery pack.

[0034] Among them, the water inlet flow path 131 is located at the edge of the heat exchange plate body 10, so that the water inlet flow path 131 can well divert the coolant to the branch flow path 133, or the water outlet flow path 132 is located at the edge of the heat exchange plate body 10, so that the coolant in the branch flow path 133 can be collected into the water outlet flow path 132 after the heat exchange is completed. Preferably, in this embodiment, the water inlet flow path 131 and the water outlet flow path 132 are both located at the edge of the heat exchange plate body 10, so that the coolant can more easily enter the branch flow path 133 when flowing in the cooling channel 13 and be discharged from the branch flow path 133 after the heat exchange is completed. At the same time, a plurality of branch flow paths 133 are arranged parallel to each other and are directly opposite to the heat exchange plate 100, so that the heat exchange plate 100 can well exchange heat for the battery pack.

[0035] In some embodiments, a plurality of heat exchange areas 12 arranged in an array are formed on the heat exchange surface 11 , the branch flow paths 133 are arranged in the heat exchange areas 12 and the water inlet flow path 131 and / or the water outlet flow path 132 are arranged at the edge of the heat exchange area 12 .

[0036] Therefore, multiple heat exchange zones 12 are arranged in an array on the heat exchange surface 11, so that the heat exchange efficiency of the heat exchange surface 11 is higher during heat exchange, and multiple heat exchange zones 12 can enable the heat exchange surface 11 to exchange heat with the battery pack, and the battery pack in the battery pack can obtain a better heat exchange effect. The branch flow path 133 is set in the heat exchange zone 12, which enables the heat exchange zone 12 to better exchange heat, and the water inlet flow path 131 and / or the water outlet flow path 132 are set at the edge of the heat exchange zone 12, which enables the coolant that completes heat exchange in the branch flow path 133 to flow into the water inlet flow path 131 and / or the water outlet flow path 132.

[0037] Among them, when the heat exchange area 12 is formed on the heat exchange surface 11, the heat exchange area 12 is arranged in an array on the heat exchange surface 11, and multiple battery groups are provided in the battery pack, so that the heat exchange area 12 can correspond to the battery group of the battery pack, so that each battery group can obtain good heat exchange, thereby improving the utilization rate of the heat exchange surface 11.

[0038] In some embodiments, in a heat exchange area 12, multiple branch flow paths 133 extend along the second direction and are spaced apart in the first direction, the coolant in at least one branch flow path 133 flows along the first flow direction, and the coolant in at least another branch flow path 133 flows along the second flow direction, and the first flow direction is opposite to the second flow direction.

[0039] Thus, the branch flow path 133 extends in the second direction, and multiple branch flow paths 133 are spaced apart in the first direction. It can be understood that the coolant enters from the water inlet 14 and flows through the water inlet flow path 131, the branch flow path 133 and the water outlet flow path 132 in sequence before being discharged from the water outlet 15. The coolant exchanges heat with the battery pack during the flow process. Therefore, as the coolant flows, the heat loss of the coolant gradually increases. The increase in the heat loss of the coolant will reduce the heat exchange effect on the battery cells. By allowing the coolant to flow along the first flow direction in some branch flow paths 133, and the coolant to flow along the second flow direction in some branch flow paths 133, and at the same time, the first flow direction is opposite to the second flow direction, the phenomenon that some battery cells in the heat exchange area 12 have good heat exchange effects and some battery cells have poor heat exchange effects can be avoided, so that the heat exchange plate 100 can more evenly exchange heat with multiple battery cells in the heat exchange area 12.

[0040] In some embodiments, the multiple branch flow paths 133 include: a first branch flow path 1331 and a second branch flow path 1332, the first branch flow path 1331 and the second branch flow path 1332 are respectively arranged on both sides of the heat exchange zone 12 in the first direction, and a third branch flow path 1333, the third branch flow path 1333 is constructed to be connected to each other, and the multiple branch flow paths 133 are arranged between the first branch flow path 1331 and the second branch flow path 1332, wherein the first branch flow path 1331331 and the second branch flow path 1332 are connected through multiple third branch flow paths 1333, wherein, in at least one heat exchange zone 12, the first branch flow path 1331 is connected to the water inlet flow path 131, and the second branch flow path 1332 is connected to the water outlet flow path 132, and / or the first branch flow path 1331 and the second branch flow path 1332 of at least one heat exchange zone 12 are respectively connected to the water inlet flow path 131, and at least one third branch flow path 1333 is connected to the water outlet flow path 132.

[0041] Thus, among the multiple heat exchange zones 12, one end of the first branch flow path 1331 and one end of the second branch flow path 1332 in at least one heat exchange zone 12 are connected to the water inlet flow path 131, and the other end of the first branch flow path 1331 and the other end of the second branch flow path 1332 are respectively connected to at least one third branch flow path 1333. Among the multiple third branch flow paths 1333, the third branch flow path 1333 connected to the first branch flow path 1331 and the third branch flow path 1333 connected to the second branch flow path 1332 are respectively connected to the water outlet flow path 132. Of course, it can also be that one end of one of the multiple third branch flow paths 1333 is respectively connected to the first branch flow path 1331 and the second branch flow path 1332, and the other end of the third branch flow path 1333 is connected to the water outlet flow path 132. There is no restriction here.

[0042] It is understood that within a heat exchange zone 12, the portion of the battery pack near the outer periphery of the heat exchange zone 12 is configured as an edge portion. Because the edge portion has a larger contact area with the external environment, when the heat exchange plate 100 heats multiple battery packs, the edge portion experiences greater heat loss, resulting in lower heating efficiency of the heat exchange plate 100 for the battery packs. When the heat exchange plate 100 is suitable for heating battery packs, the coolant begins heating the multiple battery packs corresponding to the heat exchange zone 12 from the first branch flow path 1331 and the second branch flow path 1332. The first branch flow path 1331 and the second branch flow path 1332 correspond to the edge portion, respectively. Since the coolant experiences less heat loss when flowing through the first branch flow path 1331 and the second branch flow path 1332, the first branch flow path 1331 and the second branch flow path 1332 achieve a better heating effect on the edge portion. Therefore, the above-mentioned setting can improve the heating effect on the edge part to eliminate the heat loss of the edge part, so that the coolant heats the battery pack corresponding to the heat exchange area 12 more evenly, improves the heating effect of the battery pack corresponding to the heat exchange area 12, and improves the cold start capability of the battery assembly.

[0043] In some embodiments, among multiple heat exchange zones 12, the first branch flow path 1331 in at least one heat exchange zone 12 is connected to the water inlet flow path 131 and the second branch flow path 1332 is connected to the water outlet flow path 132. Therefore, after the coolant enters the heat exchange zone 12 from the water inlet flow path 131, the coolant passes through the first branch flow path 1331, the third branch flow path 1333 and the second branch flow path 1332 in sequence before entering the water outlet flow path 132. The coolant flow path is simple, which simplifies the setting method of the first branch flow path 1331, the second branch flow path 1332 and the third branch flow path 1333 in the heat exchange zone 12, improves the production efficiency of the heat exchange plate 100, and at the same time, extends the residence time of the coolant in the heat exchange zone 12, thereby improving the utilization rate of the coolant.

[0044] It is worth mentioning that the first branch flow path 1331 can be constructed as a plurality of parallel to each other. As an example, the first branch flow path 1331 is constructed as two, and the ends on the same side of the two first branch flow paths 1331 are respectively connected to one end of the third branch flow path 1333, and the other ends on the same side of the two first branch flow paths 1331 are respectively connected to the water inlet flow path 131; similarly, the second branch flow path 1332 can be constructed as a plurality of parallel to each other. As an example, the second branch flow path 1332 is constructed as two, and the ends on the same side of the two second branch flow paths 1332 are respectively connected to one end of the third branch flow path 1333, and the other ends on the same side of the two second branch flow paths 1332 are respectively connected to the water outlet flow path 132.

[0045] In some embodiments, the heat exchange zone 12 includes: a first heat exchange zone 121, the first heat exchange zone 121 is arranged adjacent to the water inlet 14, and the flow rate of the cooling channel 13 in the first heat exchange zone 121 is Q1; a second heat exchange zone 122, the second heat exchange zone 122 is arranged on the side of the first heat exchange zone 121 away from the water inlet 14, and the flow rate of the cooling channel 13 in the second heat exchange zone 122 is Q2; a third heat exchange zone 123, the third heat exchange zone 123 is arranged adjacent to the water outlet 15, and the flow rate of the cooling channel 13 in the third heat exchange zone 123 is Q3; a fourth heat exchange zone 124, the fourth heat exchange zone 124 is arranged on the side of the third heat exchange zone 123 away from the water outlet 15, and the flow rate of the cooling channel 13 in the fourth heat exchange zone 124 is Q4; wherein, Q1<Q2; Q3<Q4.

[0046] Therefore, the heat exchange plate 100 of this embodiment is provided with a water inlet 14, a water outlet 15 and a plurality of heat exchange zones 12. The water inlet 14 is connected to the plurality of heat exchange zones 12 through the water inlet flow path 131, and the water outlet 15 is connected to the plurality of heat exchange zones 12 through the water outlet flow path 132. When the battery pack is working, the coolant can enter the heat exchange plate 100 from the water inlet 14 and enter the corresponding heat exchange zone 12 along the water inlet flow path to exchange heat with the battery pack. The coolant after heat exchange can flow to the water outlet 15 through the water outlet flow path 132 and finally flow out of the heat exchange plate 100, thereby realizing the heat exchange function of the heat exchange plate 100. Specifically, the heat exchange zones 12 on the heat exchange plate 100 include a first heat exchange zone 121, a second heat exchange zone 122, a third heat exchange zone 123, and a fourth heat exchange zone 124. The first heat exchange zone 121 is located adjacent to the water inlet 14, and the second heat exchange zone 122 is located on the side of the first heat exchange zone 121 facing away from the water inlet 14. The third heat exchange zone 123 is located adjacent to the water outlet 15, and the fourth heat exchange zone 124 is located on the side of the third heat exchange zone 123 facing away from the water outlet 15. The four heat exchange zones 12 on the heat exchange plate 100 enable simultaneous heat exchange with multiple battery packs, improving the heat exchange efficiency of the heat exchange plate 100. Furthermore, the positioning of the four heat exchange zones 12 makes the overall structure of the heat exchange plate 100 more compact.

[0047] Furthermore, the flow rate of the cooling channel 13 in the first heat exchange zone 121 is Q1, the flow rate of the cooling channel 13 in the second heat exchange zone 122 is Q2, the flow rate of the cooling channel 13 in the third heat exchange zone 123 is Q3, and the flow rate of the cooling channel 13 in the fourth heat exchange zone 124 is Q4, where Q1 < Q2 and Q3 < Q4. That is, the flow rate of the cooling channel 13 in the first heat exchange zone 121 is less than the flow rate of the cooling channel 13 in the second heat exchange zone 122, and the flow rate of the cooling channel 13 in the third heat exchange zone 123 is less than the flow rate of the cooling channel 13 in the fourth heat exchange zone 124. The flow rate settings of the cooling channels 13 in the four heat exchange zones 12 of the heat exchange plate 100 facilitate more uniform heat exchange efficiency in each heat exchange zone 12. Specifically, after the coolant flows into the heat exchange plate 100, due to the layout of the heat exchange zone 12, the distance the coolant enters the first heat exchange zone 121 will be shorter than the distance the coolant enters the second heat exchange zone 122. Therefore, the setting of the flow rate of the cooling channel 13 in the second heat exchange zone 122 being greater than the flow rate of the cooling channel 13 in the first heat exchange zone 121 can avoid the loss of coolant in the process of flowing into the second heat exchange zone 122 and increase the speed of the coolant flowing into the second heat exchange zone 122, so that the heat exchange efficiency of the first heat exchange zone 121 and the second heat exchange zone 122 during heat exchange is more balanced. Similarly, the distance the coolant travels to enter the third heat exchange zone 123 is shorter than the distance the coolant travels to enter the fourth heat exchange zone 124. Therefore, the arrangement of the cooling channel 13 in the fourth heat exchange zone 124 with a flow rate greater than the flow rate of the cooling channel 13 in the third heat exchange zone 123 can avoid coolant loss during its flow into the fourth heat exchange zone 124 and increase the speed at which the coolant flows into the fourth heat exchange zone 124, thereby making the heat exchange efficiency of the third heat exchange zone 123 and the fourth heat exchange zone 124 more balanced during heat exchange. The arrangement of Q1 < Q2; Q3 < Q4 can improve the balance of heat exchange efficiency in each heat exchange zone 12 of the heat exchange plate 100, avoid the situation where the heat exchange capacity of a local area of ​​the heat exchange plate 100 is too strong or too weak, and thereby improve the overall heat exchange efficiency of the heat exchange plate 100 and the safety of the heat exchange plate 100 during heat exchange.

[0048] It is worth noting that the above-mentioned coolant loss can be understood as at least a portion of the coolant adhering to the pipeline for transporting the coolant when the coolant flows to the second heat exchange area 122 or the fourth heat exchange area 124 .

[0049] In some embodiments, Q1 and Q3 may be the same or relatively close, and may be specifically limited according to the actual processing size of the heat exchange plate 100 .

[0050] In some embodiments, the first heat exchange zone 121 includes a first sub-zone 1211 and a second sub-zone 1212 connected in parallel and spaced apart in the first direction. The flow rate of the cooling channel 13 in the first sub-zone 1211 is Q11, and the flow rate of the cooling channel 13 in the second sub-zone 1212 is Q12, and 0≤|Q11-Q12|≤1.5% is satisfied.

[0051] Specifically, a first sub-area 1211 and a second sub-area 1212 are provided within the first heat exchange region 121. These sub-areas 1211 and 1212 can exchange heat between different battery groups within the battery pack, thereby improving the heat exchange capacity of the heat exchange plate 100. The first sub-areas 1211 and the second sub-areas 1212 are spaced apart in the first direction, making the structure of the first heat exchange region 121 more compact. In addition, the flow rate of the cooling channel 13 in the first sub-zone 1211 is Q11, and the flow rate of the cooling channel 13 in the second sub-zone 1212 is Q12, and it satisfies 0≤|Q11-Q12|≤1.5%, that is, the difference between the flow rate of the cooling channel 13 in the first sub-zone 1211 and the flow rate of the cooling channel 13 in the second sub-zone 1212 is controlled at 0-1.5%. The relationship between Q11 and Q12 can make the heat exchange capacity of the first sub-zone 1211 and the heat exchange capacity of the second sub-zone 1212 more balanced, avoiding the situation where the local heat exchange capacity is too strong during heat exchange in the first heat exchange zone 121.

[0052] In some embodiments, the first sub-area 1211 and the second sub-area 1212 are respectively connected to the water inlet 14 on the side away from each other, and the first sub-area 1211 and the second sub-area 1212 are respectively connected to the water outlet 15 on the side close to each other.

[0053] Specifically, the connecting pipes between the first sub-area 1211 and the water inlet 14, and the connecting pipes between the second sub-area 1212 and the water inlet 14, are arranged on the opposite sides of the first sub-area 1211 and the second sub-area 1212, respectively. The connecting pipes between the first sub-area 1211 and the water outlet 15, and the connecting pipes between the second sub-area 1212 and the water outlet 15, are arranged on the adjacent sides of the first sub-area 1211 and the second sub-area 1212, respectively. This connection between the first sub-area 1211 and the second sub-area 1212 and the water inlet 14 and the water outlet 15 creates a "two-side inlet, center-outlet" pattern between the coolant and the first heat exchange area 121. "Two-side inlet, center-outlet" here means that the coolant enters the first sub-area 1211 and the second sub-area 1212 from the opposite sides of the first sub-area 1211 and the second sub-area 1212, respectively, and simultaneously flows out from the adjacent sides of the first sub-area 1211 and the second sub-area 1212. The setting of the cooling liquid inlet and outlet routes of the first sub-area 1211 and the second sub-area 1212 enables the cooling liquid of the first heat exchange area 121 to flow from the periphery to the middle. When the battery pack is working, the temperature of the edge of the battery pack changes rapidly. Therefore, the flow of cooling liquid from the periphery to the middle of the first heat exchange area 121 can improve the heat exchange capacity between the first heat exchange area 121 and the corresponding battery pack, so that the battery pack can be kept at a suitable temperature, thereby improving the cold start capability of the battery pack.

[0054] In some embodiments, the second heat exchange zone 122 includes a third sub-zone 1221 and a fourth sub-zone 1222 that are connected in parallel to each other and spaced apart in the first direction; the fourth heat exchange zone 124 includes a fifth sub-zone 1241 and a sixth sub-zone 1242 that are connected in parallel to each other and spaced apart in the first direction, and the third sub-zone 1221 and the sixth sub-zone 1242 are adjacent to each other, wherein the flow rate of the cooling channel 13 in the third sub-zone 1221 is Q21, the flow rate of the cooling channel 13 in the fourth sub-zone 1222 is Q22, Q21<Q22, the flow rate of the cooling channel 13 in the fifth sub-zone 1241 is Q41, and the flow rate of the cooling channel 13 in the sixth sub-zone 1242 is Q42, Q41>Q42.

[0055] Similar to the above-mentioned first heat exchange zone 121, the second heat exchange zone 122 and the fourth heat exchange zone 124 can also be constructed with multiple sub-zones. Specifically, the second heat exchange zone 122 can be provided with a third sub-zone 1221 and a fourth sub-zone 1222, and the fourth heat exchange zone 124 can be provided with a fifth sub-zone 1241 and a sixth sub-zone 1242, wherein the third sub-zone 1221 and the fourth sub-zone 1222 are spaced apart in the first direction, the fifth sub-zone 1241 and the sixth sub-zone 1242 are also spaced apart in the first direction, and the third sub-zone 1221 and the sixth sub-zone 1242 are adjacent to each other. It can be understood that the fifth sub-zone 1241, the sixth sub-zone 1242, the third sub-zone 1221 and the fourth sub-zone 1222 are spaced apart in sequence in the first direction of the heat exchange plate 100. The second heat exchange zone 122 and the fourth heat exchange zone 124 are respectively constructed with two sub-zones so that the second heat exchange zone 122 and the fourth heat exchange zone 124 can simultaneously perform heat exchange with multiple battery groups in the battery pack, thereby improving the heat exchange capacity of the heat exchange plate 100. At the same time, the layout of the fifth sub-zone 1241, the sixth sub-zone 1242, the third sub-zone 1221 and the fourth sub-zone 1222 on the heat exchange plate 100 improves the compactness of the structure of the second heat exchange zone 122 and the fourth heat exchange zone 124.

[0056] Furthermore, within the second heat exchange zone 122, the flow rate of the cooling channel 13 within the third sub-zone 1221 is Q21, and the flow rate of the cooling channel 13 within the fourth sub-zone 1222 is Q22, satisfying the relationship Q21 < Q22. That is, the coolant flow rate within the third sub-zone 1221 is less than the coolant flow rate within the fourth sub-zone 1222. Because the fourth sub-zone 1222 is located within the second heat exchange zone 122 closer to the edge of the heat exchange plate 100, corresponding to the edge of the battery pack where the battery pack temperature fluctuates rapidly, the greater coolant flow rate in the fourth sub-zone 1222 relative to the third sub-zone 1221 improves the heat exchange capacity of the fourth sub-zone 1222 for the battery pack, ensuring timely heat exchange for the battery pack corresponding to the fourth sub-zone 1222 and enhancing battery pack safety. Similarly, in the fourth heat exchange zone 124, the flow rate of the cooling channel 13 in the fifth sub-zone 1241 is Q41, and the flow rate of the cooling channel 13 in the sixth sub-zone 1242 is Q42, Q41>Q42. Since the fifth sub-zone 1241 is arranged in the fourth heat exchange zone 124 closer to the edge of the heat exchange plate 100, which corresponds to the edge of the battery pack, the temperature of the battery pack changes rapidly. Therefore, the coolant flow rate of the fifth sub-zone 1241 is larger than that of the sixth sub-zone 1242, which can improve the heat exchange capacity of the fifth sub-zone 1241 for the battery pack, ensure that the battery pack corresponding to the fifth sub-zone 1241 can exchange heat in time, and improve the safety of the battery pack.

[0057] In some embodiments, the third heat exchange zone 123 may also be constructed with multiple sub-zones, and the specific configuration scheme may be set according to the requirements of the battery pack during actual assembly.

[0058] As a result, multiple parallel branch flow paths 133 are formed in each of the first, second, third, and fourth heat exchange zones 121, 122, 123, and 124. Coolant in at least one branch flow path 133 flows in a first direction, while coolant in at least another branch flow path 133 flows in a second direction, with the first and second directions being opposite. Heat exchange in the soaker heat exchange plate 100 is achieved through the flow of coolant within each heat exchange zone 12. Therefore, the structure of the heat exchange zone 12 affects the heat exchange capacity of the heat exchange plate 100. Specifically, a plurality of branch flow paths 133 parallel to each other are respectively formed in the first heat exchange zone 121, the second heat exchange zone 122, the third heat exchange zone 123 and the fourth heat exchange zone 124. It can be understood that the coolant will flow in the plurality of branch flow paths 133 after entering each heat exchange zone. The structure of the plurality of branch flow paths 133 increases the heat exchange area 11 between each heat exchange zone 12 and the battery pack, thereby improving the heat exchange capacity of the heat exchange plate 100. In any heat exchange zone 12, the coolant in at least one branch flow path 133 flows along the first flow direction, and the coolant in at least another branch flow path 133 flows along the second flow direction, and the first flow direction is opposite to the second flow direction. It can be understood that, among the multiple branch flow paths 133 parallel to each other, there are branch flow paths 133 with opposite coolant flow directions. The flow direction setting scheme of the coolant in the branch flow paths 133 can make the coolant in a single heat exchange zone 12 flow back and forth between the first flow direction and the second flow direction, thereby increasing the residence time of the coolant in each heat exchange zone 12, and thereby improving the heat exchange capacity of each heat exchange zone 12.

[0059] In some embodiments, the flow resistance of the branch flow path 133 in the first heat exchange zone 121 is R1, the flow resistance of the branch flow path 133 in the second heat exchange zone 122 is R2, the flow resistance of the branch flow path 133 in the third heat exchange zone 123 is R3, and the flow resistance of the branch flow path 133 in the fourth heat exchange zone 124 is R4, satisfying: R1>R2, R3>R4.

[0060] In some embodiments, the flow rates of the coolant in the first heat exchange zone 121, the second heat exchange zone 122, the third heat exchange zone 123 and the fourth heat exchange zone 124 are Q1, Q2, Q3 and Q4 respectively. The greater the flow resistance of the branch flow path 133, the faster the flow rate of the coolant in the branch flow path 133, that is, the shorter the residence time of the coolant in the branch flow path 133, so that the flow rate of the branch flow path 133 is smaller. As the coolant flows, the heat loss of the coolant gradually increases. It can be understood that the time when the coolant enters the first heat exchange zone 121 is t1, the time when the coolant enters the second heat exchange zone 122 is t2, the time when the coolant enters the third heat exchange zone 123 is t3, and the time when the coolant enters the fourth heat exchange zone 124 is t4. Compared with the third heat exchange zone 123, the water inlet 1410 of the second heat exchange zone 122 is closer to that of the third heat exchange zone 124. The distance between the heat exchange zones 123 is smaller than the distance between the water inlet 1410 and the second heat exchange zone 122, therefore, t3>t2. Compared with the fourth heat exchange zone 124, the distance between the water inlet 1410 and the second heat exchange zone 122 is equal to the distance between the water inlet 1410 and the fourth heat exchange zone 124, that is, t2=t4. However, since the third heat exchange zone 123 and the fourth heat exchange zone 124 share the third water inlet 1410, the efficiency of the coolant entering the second heat exchange zone 122 is greater than the efficiency of the coolant entering the fourth heat exchange zone 124. Therefore, through the above setting, Q4>Q2>Q3>Q1 can be made, so that the heat exchange of the coolant to the battery packs corresponding to the first heat exchange zone 121, the second heat exchange zone 122, the third heat exchange zone 123 and the fourth heat exchange zone 124 is more balanced.

[0061] In some embodiments, the cross-sectional area of ​​the branch flow path in the first heat exchange zone 121 is S1, the cross-sectional area of ​​the branch flow path 133 in the second heat exchange zone 122 is S2, the cross-sectional area of ​​the branch flow path 133 in the third heat exchange zone 123 is S3, and the cross-sectional area of ​​the branch flow path 133 in the fourth heat exchange zone 124 is S4, satisfying: S3>S4, S2>S1.

[0062] It is understood that the flow resistance of the coolant in branch flow path 133 can be controlled by providing a block or the like in branch flow path 133, or by controlling the cross-sectional area of ​​branch flow path 133, without limitation. Thus, by setting S4>S2>S3>S1, R1>R3>R2>R4 can be achieved, thereby achieving Q4>Q2>Q3>Q1.

[0063] In some embodiments, the heat exchange plate 100 includes a first heat exchange plate 100 and a second heat exchange plate 100, and a cooling channel 13 is formed on at least one of the first heat exchange plate 100 and the second heat exchange plate 100, that is, a cooling channel 13 can be formed on the first heat exchange plate 100, or a cooling channel 13 is formed on the second heat exchange plate 100, or both the first heat exchange plate 100 and the second heat exchange plate 100 are provided with a cooling channel 13. Preferably, in this embodiment, a cooling channel 13 is formed on the first heat exchange plate 100, and the second heat exchange plate 100 is a flat plate, which makes it easier for the heat exchange plate 100 to exchange heat for the battery pack.

[0064] Furthermore, the first heat exchange plate 100 and the second heat exchange plate 100 are both constructed as sheet metal parts, so that the first heat exchange plate 100 and the second heat exchange plate 100 can be spliced ​​together to form a heat exchange plate 100. At the same time, the first heat exchange plate 100 and the second heat exchange plate 100 can be positioned by spot welding first, and then the first heat exchange plate 100 and the second heat exchange plate 100 can be connected together by brazing after the positioning is completed. This ensures the connection stability of the first heat exchange plate 100 and the second heat exchange plate 100 and can make the heat exchange plate 100 less likely to leak.

[0065] The present application also provides a battery assembly.

[0066] A battery assembly according to an embodiment of the present application includes: a battery pack, wherein the battery packs are configured to have a plurality of battery cells sequentially arranged in a first direction, each battery pack being provided with a plurality of battery cells sequentially arranged in a second direction; a heat exchange plate 100, wherein the heat exchange plate 100 is configured as any of the heat exchange plates 100 described in the above embodiments, and the heat exchange plate 100 is positioned opposite the battery pack; and an extension plate, wherein the extension plate is formed with an extension channel communicating with a water inlet 14 and a water outlet 15.

[0067] Therefore, the water outlet 15 and the water inlet 14 of the heat exchange plate 100 can be extended by the extension plate, so that the water outlet 15 and the water inlet 14 of the heat exchange plate 100 can exceed the frame of the battery assembly, thereby making it easier for the coolant to enter the cooling channel 13 for heat dissipation, and making it simpler to set the heat exchange plate 100 in the battery assembly.

[0068] The present application also proposes a vehicle.

[0069] The vehicle according to an embodiment of the present application includes: the battery assembly of the above embodiment.

[0070] The vehicle according to the present application is provided with the battery assembly of the above-mentioned embodiment, so the vehicle has high operating stability.

[0071] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0072] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0073] In this application, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," and the like should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0074] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0076] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat exchange plate, wherein, include: A heat exchange plate body, wherein a heat exchange surface suitable for facing the battery pack is formed on the heat exchange plate body, and a cooling flow channel and a water inlet and a water outlet communicated with the cooling flow channel are formed inside the heat exchange plate body; in The cooling channel comprises: an inlet flow path and an outlet flow path, the inlet flow path is connected to the water inlet, the outlet flow path is connected to the water outlet, and the inlet flow path and / or the outlet flow path are arranged at the edge of the heat exchange plate body; The branch flow path is structured to be a plurality of branch flow paths that are parallel to each other and spaced apart, each of the branch flow paths is connected to the water inlet flow path and the water outlet flow path and is directly opposite to the heat exchange surface so as to be suitable for heat exchange of the battery pack.

2. The heat exchange plate according to claim 1, wherein, A plurality of heat exchange areas arranged in an array are formed on the heat exchange surface, the branch flow paths are arranged in the heat exchange areas, and the water inlet flow path and / or the water outlet flow path are arranged at the edge of the heat exchange areas.

3. The heat exchange plate according to claim 2, wherein, In one of the heat exchange zones, a plurality of the branch flow paths extend respectively along the second direction and are spaced apart in the first direction, the coolant in at least one of the branch flow paths flows along the first flow direction, and the coolant in at least another of the branch flow paths flows along the second flow direction, and the first flow direction is opposite to the second flow direction.

4. The heat exchange plate according to claim 2 or 3, wherein, The plurality of branch flow paths include: a first branch flow path and a second branch flow path, wherein the first branch flow path and the second branch flow path are respectively arranged on both sides of the heat exchange area in a first direction; a third branch flow path, wherein the third branch flow path is constructed in a plurality of interconnected configurations, and the plurality of branch flow paths are disposed between the first branch flow path and the second branch flow path; The first branch flow path and the second branch flow path are connected through a plurality of the third branch flow paths; wherein In at least one heat exchange zone, the first branch flow path is connected to the water inlet flow path, the second branch flow path is connected to the water outlet flow path, and / or The first branch flow path and the second branch flow path of at least one heat exchange zone are respectively connected to the water inlet flow path, and at least one third branch flow path is connected to the water outlet flow path.

5. The heat exchange plate according to any one of claims 2 to 4, wherein: The heat exchange zone comprises: A first heat exchange zone, wherein the first heat exchange zone is arranged adjacent to the water inlet, and the flow rate of the cooling channel in the first heat exchange zone is Q1; a second heat exchange zone, the second heat exchange zone being arranged on a side of the first heat exchange zone away from the water inlet, and the flow rate of the cooling channel in the second heat exchange zone being Q2; A third heat exchange zone, wherein the third heat exchange zone is arranged adjacent to the water outlet, and the flow rate of the cooling channel in the third heat exchange zone is Q3; The fourth heat exchange zone is arranged on the side of the third heat exchange zone away from the water outlet, and the flow rate of the cooling channel in the fourth heat exchange zone is Q4; wherein Q1<Q2;Q3<Q4。 6. The heat exchange plate according to claim 5, wherein, The first heat exchange zone includes a first sub-zone and a second sub-zone which are connected in parallel and arranged at intervals in a first direction. The flow rate of the cooling channel in the first sub-zone is Q11, the flow rate of the cooling channel in the second sub-zone is Q12, and 0≤|Q11-Q12|≤1.5 is satisfied.

7. The heat exchange plate according to claim 6, wherein, The first sub-region and the second sub-region are respectively communicated with the water inlet on the side facing away from each other, and the first sub-region and the second sub-region are respectively communicated with the water outlet on the side close to each other.

8. The heat exchange plate according to claim 6 or 7, wherein, The second heat exchange region includes a third sub-region and a fourth sub-region that are connected in parallel to each other and arranged at intervals in the first direction; the fourth heat exchange region includes a fifth sub-region and a sixth sub-region that are connected in parallel to each other and arranged at intervals in the first direction; the third sub-region and the sixth sub-region are adjacent to each other; wherein the flow rate of the cooling flow channels in the third sub-region is Q21, the flow rate of the cooling flow channels in the fourth sub-region is Q22, and Q21 < Q22; the flow rate of the cooling flow channels in the fifth sub-region is Q41, the flow rate of the cooling flow channels in the sixth sub-region is Q42, and Q41 > Q42.

9. The heat exchange plate according to any one of claims 5-8, wherein, The flow resistance of the branch flow path in the first heat exchange region is R1, the flow resistance of the branch flow path in the second heat exchange region is R2, the flow resistance of the branch flow path in the third heat exchange region is R3, and the flow resistance of the branch flow path in the fourth heat exchange region is R4, satisfying: R1 > R2, R3 > R4.

10. The heat exchange plate according to claim 9, wherein, The cross-sectional area of the branch flow path in the first heat exchange region is S1, the cross-sectional area of the branch flow path in the second heat exchange region is S2, the cross-sectional area of the branch flow path in the third heat exchange region is S3, and the cross-sectional area of the branch flow path in the fourth heat exchange region is S4, satisfying: S3 > S4, S2 > S1.

11. A battery assembly, wherein, Comprising: a battery pack configured to arrange a plurality of battery packs in sequence in the first direction, and each battery pack is provided with a plurality of battery cells arranged in sequence in the second direction; a heat exchange plate configured to be the heat exchange plate according to any one of claims 1-10, and the heat exchange plate faces the battery pack; an extension plate on which an extension channel communicating with the water inlet and the water outlet is formed.

12. A vehicle, wherein, Comprising: the battery assembly according to claim 11.

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