Heat exchange plate, battery assembly and vehicle with same

Abstract

The application discloses a heat exchange plate, a battery assembly and a vehicle with the same. The heat exchange plate comprises a heat exchange plate body, a heat exchange surface adapted to be opposite to a battery pack is formed on the heat exchange plate body, a cooling flow channel is formed in the heat exchange plate body, and a water inlet and a water outlet are in communication with the cooling flow channel. The cooling flow channel comprises a water inlet flow path and a water outlet flow path, the water inlet flow path is in communication with the water inlet, the water outlet flow path is in communication with the water outlet, and the water inlet flow path and / or the water outlet flow path is at the edge of the heat exchange plate body; a branch flow path is configured as a plurality of parallel and spaced branches, each branch flow path is connected with the water inlet flow path and the water outlet flow path and is opposite to the heat exchange surface to be adapted to heat exchange of the battery pack. According to the heat exchange plate, the plurality of branch flow paths of the cooling flow channel are opposite to the heat exchange surface, so that the heat exchange efficiency can be improved, and the water inlet flow path and the water outlet flow path are arranged at the edge of the heat exchange plate body, so that the cooling liquid does not affect the heat exchange of the battery pack by the heat exchange surface when entering and leaving the flow path.

Description

Technical Field

[0001] This invention relates to the field of heat exchange plate technology, specifically to a heat exchange plate, a battery assembly, and a vehicle having the same. Background Technology

[0002] In related technologies, battery packs are typically used in conjunction with structures such as heat exchange plates. The heat exchange plates exchange heat with the battery pack, ensuring it operates at its optimal temperature and thus improving its performance. Each heat exchange plate contains multiple heat exchange zones, each capable of independently heating the battery cells within the pack. However, the arrangement of the flow channels within the heat exchange plate can affect its heat exchange efficiency. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a heat exchange plate that has higher heat exchange efficiency when exchanging heat with a battery pack.

[0004] According to an embodiment of the present invention, a heat exchange plate includes: a heat exchange plate body, wherein a heat exchange surface adapted to face a battery pack is formed on the heat exchange plate body, and a cooling channel and an inlet and an outlet communicating with the cooling channel are formed inside the heat exchange plate body; wherein the cooling channel includes: an inlet flow path and an outlet flow path, the inlet flow path communicating with the inlet and the outlet flow path communicating with the outlet, and the inlet flow path and / or the outlet flow path passing through the edge of the heat exchange plate body; and branch flow paths, wherein the branch flow paths are configured as a plurality of parallel and spaced-apart branches, each branch flow path being connected to the inlet flow path and the outlet flow path and facing the heat exchange surface to be adapted to exchange heat with the battery pack.

[0005] According to an embodiment of the present invention, the heat exchange plate exchanges heat with the battery pack through the heat exchange surface, and the multiple branch flow paths of the cooling flow channel are directly opposite the heat exchange surface, thereby improving the heat exchange efficiency. At the same time, the inlet flow path and / or outlet flow path are arranged at the edge of the heat exchange plate body so that the coolant does not affect the heat exchange of the battery pack when flowing in and out.

[0006] According to some embodiments of the present invention, a heat exchange plate has a plurality of heat exchange zones arranged in an array on the heat exchange surface, the branch flow path is disposed within the heat exchange zone, and the inlet flow path and / or the outlet flow path is disposed at the edge of the heat exchange zone.

[0007] According to some embodiments of the present invention, in a heat exchange zone, a plurality of branch flow paths extend along a second direction and are spaced apart in a first direction, the coolant in at least one of the branch flow paths flows along a first flow direction, and the coolant in at least another branch flow path flows along a second flow direction, the first flow direction being opposite to the second flow direction.

[0008] According to some embodiments of the present invention, the heat exchange plate includes a plurality of branch flow paths, comprising: a first branch flow path and a second branch flow path, the first branch flow path and the second branch flow path being respectively disposed on both sides of the heat exchange zone in a first direction; and a third branch flow path, wherein the third branch flow paths are configured to communicate with each other, and the plurality of branch flow paths are disposed between the first branch flow path and the second branch flow path; wherein the first branch flow path and the second branch flow path are connected through the plurality of third branch flow paths; wherein, in at least one heat exchange zone, the first branch flow path is connected to the inlet flow path, the second branch flow path is connected to the outlet flow path, and / or, in at least one heat exchange zone, the first branch flow path and the second branch flow path are respectively connected to the inlet flow path, and at least one third branch flow path is connected to the outlet flow path.

[0009] According to some embodiments of the present invention, the heat exchange plate includes: a first heat exchange zone disposed adjacent to the water inlet, wherein the flow rate of the cooling channel in the first heat exchange zone is Q1; a second heat exchange zone disposed on the side of the first heat exchange zone away from the water inlet, wherein the flow rate of the cooling channel in the second heat exchange zone is Q2; a third heat exchange zone disposed adjacent to the water outlet, wherein the flow rate of the cooling channel in the third heat exchange zone is Q3; and a fourth heat exchange zone disposed on the side of the third heat exchange zone away from the water outlet, wherein the flow rate of the cooling channel in the fourth heat exchange zone is Q4; wherein, Q1 < Q2; Q3 < Q4.

[0010] According to some embodiments of the present invention, the heat exchange plate of the first heat exchange zone includes a first sub-zone and a second sub-zone that are arranged in parallel with each other and spaced apart in a first direction. The flow rate of the cooling channel in the first sub-zone is Q11, and the flow rate of the cooling channel in the second sub-zone is Q12, and satisfies 0≤|Q11-Q12|≤1.5%.

[0011] According to some embodiments of the heat exchange plate of the present invention, the first sub-region and the second sub-region are respectively connected to the water inlet on the side opposite to each other, and the first sub-region and the second sub-region are respectively connected to the water outlet on the side closer to each other.

[0012] According to some embodiments of the heat exchange plate of the present invention, the second heat exchange zone includes a third sub-zone and a fourth sub-zone arranged in parallel and spaced apart in a first direction; the fourth heat exchange zone includes a fifth sub-zone and a sixth sub-zone arranged in parallel and spaced apart in a first direction; the third sub-zone and the sixth sub-zone are adjacent to each other; wherein the flow rate of the cooling channel in the third sub-zone is Q21, the flow rate of the cooling channel in the fourth sub-zone is Q22, Q21 < Q22; the flow rate of the cooling channel in the fifth sub-zone is Q41, the flow rate of the cooling channel in the sixth sub-zone is Q42, Q41 > Q42.

[0013] According to some embodiments of the present invention, the flow resistance of the branch flow path in the first heat exchange zone is R1, the flow resistance of the branch flow path in the second heat exchange zone is R2, the flow resistance of the branch flow path in the third heat exchange zone is R3, and the flow resistance of the branch flow path in the fourth heat exchange zone is R4, satisfying: R1 > R2, R3 > R4.

[0014] According to some embodiments of the present invention, the heat exchange plate has a branch flow path with a cross-sectional area of ​​S1 in the first heat exchange zone, a branch flow path with a cross-sectional area of ​​S2 in the second heat exchange zone, a branch flow path with a cross-sectional area of ​​S3 in the third heat exchange zone, and a branch flow path with a cross-sectional area of ​​S4 in the fourth heat exchange zone, satisfying: S3 > S4, S2 > S1.

[0015] The present invention also proposes a battery assembly.

[0016] According to an embodiment of the present invention, a battery assembly includes: a battery pack, wherein a plurality of battery packs are arranged sequentially in a first direction and each battery pack is provided with a plurality of battery cells arranged sequentially in a second direction; a heat exchange plate, wherein the heat exchange plate is configured as described in any one of the above embodiments and the heat exchange plate is directly opposite to the battery pack; and an extension plate, wherein an extension channel communicating with the water inlet and the water outlet is formed on the extension plate.

[0017] The present invention also proposes a vehicle.

[0018] A vehicle according to an embodiment of the present invention includes: the battery pack described in the above embodiments.

[0019] The advantages of the vehicle, the battery assembly, and the heat exchange plate are the same as those of the prior art, and will not be repeated here.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of a heat exchange plate according to some embodiments of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the heat exchanger plate body;

[0024] Figure 3 for Figure 2A schematic diagram of the first heat exchange zone in the middle;

[0025] Figure 4 for Figure 2 A schematic diagram of the second heat exchange zone in the diagram;

[0026] Figure 5 for Figure 2 A schematic diagram of the third heat exchange zone in the diagram;

[0027] Figure 6 for Figure 2 A schematic diagram of the fourth heat exchange zone.

[0028] Figure label:

[0029] Heat exchange plate 100;

[0030] Heat exchange plate body 10, heat exchange surface 11, heat exchange zone 12;

[0031] First heat exchange zone 121, first sub-zone 1211, second sub-zone 1212;

[0032] Second heat exchange zone 122, third sub-zone 1221, fourth sub-zone 1222;

[0033] Third heat exchange zone 123, fourth heat exchange zone 124, fifth sub-zone 1241, sixth sub-zone 1242;

[0034] Cooling channel 13, water inlet channel 131, water outlet channel 132;

[0035] Branch flow path 133, first branch flow path 1331, second branch flow path 1332;

[0036] The third branch flow path is 1333, the inlet is 14, and the outlet is 15. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0039] The following is for reference. Figures 1-6 A heat exchange plate 100 according to an embodiment of the present invention is described.

[0040] In this embodiment, the first direction can be configured as the length direction of the battery assembly, the second direction can be configured as the width direction of the battery assembly, and the third direction can be configured 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 configured as other directions of the battery assembly, which are not limited here.

[0041] like Figures 1-6 As shown, the heat exchange plate 100 according to an embodiment of the present invention includes: a heat exchange plate body 10, on which a heat exchange surface 11 adapted to face the battery pack is formed, and a cooling channel 13 and an inlet 14 and an outlet 15 communicating with 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 communicating with the inlet 14, and the outlet flow path 132 communicating with the outlet 15, the inlet flow path 131 and / or the outlet flow path 132 being disposed at the edge of the heat exchange plate body 10; and branch flow paths 133, which are configured as a plurality of parallel and spaced-apart branches, each branch flow path 133 being connected to the inlet flow path 131 and the outlet flow path 132 and facing the heat exchange surface 11 to facilitate heat exchange with the battery pack.

[0042] 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 flow channel 13 are directly opposite the heat exchange surface 11, thereby improving the heat exchange efficiency. At the same time, the inlet flow path 131 and / or outlet flow path 132 are set at the edge of the heat exchange plate body 10 so that the coolant will not affect the heat exchange surface 11 for the battery pack when it flows in and out.

[0043] For example, the heat exchange surface 11 formed within the heat exchange plate body 10 can exchange heat with the battery pack. Meanwhile, the cooling channel 13 formed within the heat exchange plate body 10 includes an inlet water flow path 131, an outlet water flow path 132, and a branch flow path 133. The cooling channel 13 is connected to an inlet water port 14 and an outlet water port 15. In this way, the coolant enters the cooling channel 13 through the inlet water port 14 to exchange heat with the battery pack. The inlet water flow path 131 and the outlet water flow path 132 are located at the edge of the heat exchange plate body 10, which makes it easier to connect the branch flow path 133 to the inlet water flow path 131 and the outlet water flow path 132. The fact that the branch flow paths 133 are parallel to each other and spaced apart can make the heat exchange efficiency of the heat exchange plate 100 higher. The branch flow paths 133 are directly opposite the heat exchange surface 11, so that they can exchange heat with the battery pack.

[0044] Furthermore, the cooling channel 13 formed within the heat exchange plate body 10 is connected to the inlet 14 and the outlet 15, so that the coolant can enter the cooling channel 13 through the inlet 14 and be discharged from the outlet 15 after completing the heat exchange. 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 with the battery pack.

[0045] The inlet flow path 131 is located at the edge of the heat exchange plate body 10, which allows the inlet flow path 131 to effectively divert the coolant to the branch flow path 133. Alternatively, the outlet flow path 132 is located at the edge of the heat exchange plate body 10, which allows the coolant in the branch flow path 133 to be collected into the outlet flow path 132 after heat exchange. Preferably, in this embodiment, both the inlet flow path 131 and the outlet flow path 132 are located at the edge of the heat exchange plate body 10, which makes it easier for the coolant to enter the branch flow path 133 when flowing in the cooling channel 13 and to be discharged from the branch flow path 133 after heat exchange. At the same time, multiple branch flow paths 133 are arranged parallel to each other and directly opposite the heat exchange plate 100, which allows the heat exchange plate 100 to effectively exchange heat with the battery pack.

[0046] In some embodiments, a plurality of heat exchange zones 12 are formed on the heat exchange surface 11 in an array, a branch flow path 133 is disposed in the heat exchange zone 12, and an inlet flow path 131 and / or an outlet flow path 132 are disposed at the edge of the heat exchange zone 12.

[0047] Therefore, the array of multiple heat exchange zones 12 arranged on the heat exchange surface 11 makes the heat exchange efficiency of the heat exchange surface 11 higher when heat exchange is performed. Moreover, the multiple heat exchange zones 12 enable the battery pack in the battery pack to obtain better heat exchange effect when the heat exchange surface 11 heats the battery pack. The branch flow path 133 is set in the heat exchange zone 12 so that the heat exchange zone 12 can perform heat exchange better. The inlet flow path 131 and / or outlet flow path 132 is set at the edge of the heat exchange zone 12 so that the coolant that has completed heat exchange in the branch flow path 133 can flow into the inlet flow path 131 and / or outlet flow path 132.

[0048] When a heat exchange zone 12 is formed on the heat exchange surface 11, the heat exchange zone 12 is arranged in an array on the heat exchange surface 11. At the same time, the battery pack contains multiple battery groups, so that the heat exchange zone 12 can correspond to the battery groups of the battery pack. In this way, each battery group can get good heat exchange, thereby improving the utilization rate of the heat exchange surface 11.

[0049] In some embodiments, in a heat exchange zone 12, a plurality of branch flow paths 133 extend along a second direction and are spaced apart in a first direction. Coolant in at least one branch flow path 133 flows along a first flow direction, and coolant in at least another branch flow path 133 flows along a second flow direction. The first flow direction is opposite to the second flow direction.

[0050] Therefore, 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 inlet 14 and flows sequentially through the inlet flow path 131, the branch flow path 133 and the outlet flow path 132 before being discharged from the outlet 15. During the flow, the coolant exchanges heat with the battery pack. As the coolant flows, the heat loss of the coolant gradually increases. The increased heat loss of the coolant will reduce the heat exchange effect on the battery cells. By making the coolant flow in the first flow direction in some of the branch flow paths 133 and in the second flow direction in some of the branch flow paths 133, and at the same time, the first flow direction and the second flow direction are opposite, the phenomenon that some battery cells have good heat exchange effect and some battery cells have poor heat exchange effect in the heat exchange zone 12 can be avoided, so that the heat exchange plate 100 provides more balanced heat exchange for multiple battery cells in the heat exchange zone 12.

[0051] In some embodiments, the plurality of branch flow paths 133 includes: 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 being respectively disposed on both sides of the heat exchange zone 12 in a first direction, and a third branch flow path 1333, the third branch flow paths 1333 being constructed to communicate with each other, and the plurality of branch flow paths 133 being disposed between the first branch flow path 1331 and the second branch flow path 1332, wherein the first branch flow path 1331 and the second branch flow path 1332 are connected through the plurality of third branch flow paths 1333, wherein in at least one heat exchange zone 12, the first branch flow path 1331 is connected to the inlet flow path 131, the second branch flow path 1332 is connected to the 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 inlet flow path 131, and at least one third branch flow path 1333 is connected to the outlet flow path 132.

[0052] Therefore, in the plurality of 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 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 plurality of 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 1332 connected to the outlet flow path 132 respectively. Alternatively, one end of one of the plurality of third branch flow paths 1333 can be connected to the first branch flow path 1331 and the second branch flow path 1332 respectively, and the other end of the third branch flow path 1333 can be connected to the outlet flow path 132. No limitation is imposed here.

[0053] Understandably, within a heat exchange zone 12, the portion of the battery pack near the outer periphery of the heat exchange zone 12 is constructed as an edge. Because the edge has a larger contact area with the external environment, the heat loss at the edge is greater when the heat exchange plate 100 heats multiple battery packs, resulting in lower heating efficiency. When the heat exchange plate 100 is suitable for heating the battery packs, the coolant begins to heat 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 portions, respectively. Since the heat loss of the coolant is smaller when flowing within the first branch flow path 1331 and the second branch flow path 1332, the heating effect of the first branch flow path 1331 and the second branch flow path 1332 on the edge portions is better. Therefore, the above-mentioned settings can improve the heating effect on the edge to eliminate heat loss at the edge, thereby making the cooling fluid heat the battery pack corresponding to the heat exchange zone 12 more evenly, improving the heating effect of the battery pack corresponding to the heat exchange zone 12, and improving the cold start capability of the battery pack.

[0054] In some embodiments, in the plurality of heat exchange zones 12, at least one of the heat exchange zones 12 has a first branch flow path 1331 connected to the inlet flow path 131 and a second branch flow path 1332 connected to the outlet flow path 132. Thus, after the coolant enters the heat exchange zone 12 from the inlet flow path 131, the coolant sequentially passes through the first branch flow path 1331, the third branch flow path 1333, and the second branch flow path 1332 before entering the outlet flow path 132. The coolant flow path is simple, which simplifies the arrangement 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.

[0055] It is worth mentioning that the first branch flow path 1331 can be constructed as multiple parallel connections. For example, two first branch flow paths 1331 can be constructed, with one end of the same side of the two first branch flow paths 1331 respectively connected to one end of the third branch flow path 1333, and the other end of the same side of the two first branch flow paths 1331 respectively connected to the inlet flow path 131. Similarly, the second branch flow path 1332 can be constructed as multiple parallel connections. For example, two second branch flow paths 1332 can be constructed, with one end of the same side of the two second branch flow paths 1332 respectively connected to one end of the third branch flow path 1333, and the other end of the same side of the two second branch flow paths 1332 respectively connected to the outlet flow path 132.

[0056] In some embodiments, the heat exchange zone 12 includes: a first heat exchange zone 121, which is disposed adjacent to the 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, which is disposed on the side of the first heat exchange zone 121 away from the 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, which is disposed adjacent to the outlet 15, and the flow rate of the cooling channel 13 in the third heat exchange zone 123 is Q3; and a fourth heat exchange zone 124, which is disposed on the side of the third heat exchange zone 123 away from the 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.

[0057] Therefore, the heat exchange plate 100 in this embodiment is provided with an inlet 14, an outlet 15, and multiple heat exchange zones 12. The inlet 14 is connected to the multiple heat exchange zones 12 through an inlet flow path 131, and the outlet 15 is connected to the multiple heat exchange zones 12 through an outlet flow path 132. When the battery pack is working, the coolant can enter the heat exchange plate 100 from the inlet 14 and enter the corresponding heat exchange zone 12 along the inlet flow path to exchange heat with the battery pack. After heat exchange, the coolant can flow through the outlet flow path 132 to the outlet 15 and finally flow out of the heat exchange plate 100, thus 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, the second heat exchange zone 122 is located on the side of the first heat exchange zone 121 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 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 arrangement of the four heat exchange zones 12 makes the overall structure of the heat exchange plate 100 more compact.

[0058] 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 that 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 that in the fourth heat exchange zone 124. The flow rate settings of the cooling channels 13 in the four heat exchange zones 12 by the heat exchange plate 100 facilitate a more uniform heat exchange efficiency in each heat exchange zone 12. Specifically, when the coolant flows into the heat exchange plate 100, due to the layout of the heat exchange zone 12, the distance the coolant travels into the first heat exchange zone 121 is shorter than the distance it travels into the second heat exchange zone 122. Therefore, the setting that the flow rate of the cooling channel 13 in the second heat exchange zone 122 is greater than the flow rate of the cooling channel 13 in the first heat exchange zone 121 can avoid coolant loss during the flow into the second heat exchange zone 122 and increase the speed at which the coolant flows 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 is more balanced. Similarly, the distance the coolant travels into the third heat exchange zone 123 is shorter than the distance it travels into the fourth heat exchange zone 124. Therefore, setting the flow rate of the cooling channel 13 in the fourth heat exchange zone 124 to be greater than that 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 coolant flows into the fourth heat exchange zone 124, making the heat exchange efficiency of the third heat exchange zone 123 and the fourth heat exchange zone 124 more balanced. The setting scheme 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 plate 100 has excessively strong or weak local heat exchange capacity, and thus improve the overall heat exchange efficiency of the heat exchange plate 100 and the safety of the heat exchange plate 100 during heat exchange.

[0059] It is worth noting that the aforementioned coolant loss can be understood as at least some coolant adhering to the pipelines transporting the coolant when the coolant flows to the second heat exchange zone 122 or the fourth heat exchange zone 124.

[0060] In some embodiments, Q1 and Q3 may be the same or relatively close, and may be specifically defined according to the actual processing dimensions of the heat exchange plate 100.

[0061] In some embodiments, the first heat exchange zone 121 includes a first sub-zone 1211 and a second sub-zone 1212 that are arranged in parallel and spaced apart in a 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 satisfies 0≤|Q11-Q12|≤1.5%.

[0062] Specifically, the first heat exchange zone 121 is provided with a first sub-zone 1211 and a second sub-zone 1212. The first sub-zone 1211 and the second sub-zone 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-zone 1211 and the second sub-zone 1212 are arranged at intervals in the first direction, which makes the structure of the first heat exchange zone 121 itself more compact. Furthermore, the flow rate of the cooling channel 13 in the first sub-region 1211 is Q11, and the flow rate of the cooling channel 13 in the second sub-region 1212 is Q12, satisfying 0≤|Q11-Q12|≤1.5%. That is, the difference between the flow rate of the cooling channel 13 in the first sub-region 1211 and the flow rate of the cooling channel 13 in the second sub-region 1212 is controlled within 0-1.5%. The relationship between Q11 and Q12 can make the heat exchange capacity of the first sub-region 1211 and the heat exchange capacity of the second sub-region 1212 more balanced, avoiding the situation where the local heat exchange capacity is too strong when the first heat exchange zone 121 exchanges heat.

[0063] In some embodiments, the first sub-region 1211 and the second sub-region 1212 are respectively connected to the inlet 14 on the side away from each other, and the first sub-region 1211 and the second sub-region 1212 are respectively connected to the outlet 15 on the side closer to each other.

[0064] Specifically, the connecting pipes of the first sub-zone 1211 and the inlet 14, and the connecting pipes of the second sub-zone 1212 and the inlet 14, are respectively arranged on the side of the first sub-zone 1211 and the second sub-zone 1212 away from each other; the connecting pipes of the first sub-zone 1211 and the outlet 15, and the connecting pipes of the second sub-zone 1212 and the outlet 15, are respectively arranged on the side of the first sub-zone 1211 and the second sub-zone 1212 closer to each other. The connection scheme of the first sub-zone 1211 and the second sub-zone 1212 with the inlet 14 and the outlet 15 creates a "two-sided inlet, middle outlet" situation between the coolant and the first heat exchange zone 121. Here, "two-sided inlet, middle outlet" can be understood as the coolant entering the first sub-zone 1211 and the second sub-zone 1212 from the two sides away from each other, and at the same time, the coolant flowing out from the side of the first sub-zone 1211 and the second sub-zone 1212 closer to each other. The arrangement of the coolant inlet and outlet routes in the first sub-region 1211 and the second sub-region 1212 allows the coolant in the first heat exchange zone 121 to flow from the periphery to the center. When the battery pack is working, the temperature at the edge of the battery pack changes rapidly. Therefore, the flow of coolant from the periphery to the center of the first heat exchange zone 121 can improve the heat exchange capacity between the first heat exchange zone 121 and the corresponding battery pack, enabling the battery pack to be at a suitable temperature and improving the cold start capability of the battery pack.

[0065] In some embodiments, the second heat exchange zone 122 includes a third sub-zone 1221 and a fourth sub-zone 1222 that are arranged in parallel and spaced apart in a first direction; the fourth heat exchange zone 124 includes a fifth sub-zone 1241 and a sixth sub-zone 1242 that are arranged in parallel and spaced apart in a first direction, wherein 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.

[0066] Similar to the first heat exchange zone 121 described above, 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. The third sub-zone 1221 and the fourth sub-zone 1222 are spaced apart in the first direction, and the fifth sub-zone 1241 and the sixth sub-zone 1242 are also spaced apart in the first direction. 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 sequentially spaced apart in the first direction of the heat exchange plate 100. The second heat exchange zone 122 and the fourth heat exchange zone 124 are each constructed with two sub-zones, enabling the second heat exchange zone and the fourth heat exchange zone 124 to exchange heat with multiple battery packs in the battery pack at the same time, thereby improving the heat exchange capability 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.

[0067] Furthermore, within the second heat exchange zone 122, the flow rate of the cooling channel 13 in the third sub-zone 1221 is Q21, and the flow rate of the cooling channel 13 in the fourth sub-zone 1222 is Q22, satisfying Q21 < Q22, meaning the coolant flow rate in the third sub-zone 1221 is less than the coolant flow rate in the fourth sub-zone 1222. Since the fourth sub-zone 1222 is located closer to the edge of the heat exchange plate 100 within the second heat exchange zone 122, corresponding to the edge of the battery pack where the temperature changes rapidly, a larger coolant flow rate in the fourth sub-zone 1222 compared to the third sub-zone 1221 can improve the heat exchange capacity of the fourth sub-zone 1222 for the battery pack, ensuring timely heat exchange and enhancing the safety of the battery pack. Similarly, within 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, where Q41 > Q42. Since the fifth sub-zone 1241 is located closer to the edge of the heat exchange plate 100 in the fourth heat exchange zone 124, which corresponds to the edge of the battery pack, where the battery pack temperature changes rapidly, the coolant flow rate of the fifth sub-zone 1241 is relatively larger than that of the sixth sub-zone 1242. This can improve the heat exchange capacity of the fifth sub-zone 1241 for the battery pack, ensuring that the battery pack corresponding to the fifth sub-zone 1241 can exchange heat in a timely manner, thus improving the safety of the battery pack.

[0068] In some embodiments, the third heat exchange zone 123 may also be constructed with multiple sub-zones, and the specific configuration scheme can be set according to the actual assembly requirements of the battery pack.

[0069] Therefore, multiple parallel branch flow paths 133 are 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, respectively. The coolant in at least one branch flow path 133 flows along a first flow direction, and the coolant in at least another branch flow path 133 flows along a second flow direction, with the first flow direction being opposite to the second flow direction. The heat exchange of the permeable heat exchange plate 100 is achieved by the flow of coolant in 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, 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 each have multiple parallel branch flow paths 133. This can be understood as the coolant flowing in multiple branch flow paths 133 after entering each heat exchange zone. The construction of multiple 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, with the first flow direction and the second flow direction being opposite. It can be understood that among the multiple parallel branch flow paths 133, there are branch flow paths 133 with opposite coolant flow directions. The coolant flow direction setting scheme in the branch flow path 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 thus improving the heat exchange capacity of each heat exchange zone 12.

[0070] 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.

[0071] 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 coolant flows in the branch flow path 133, meaning the shorter the residence time of the coolant in the branch flow path 133, resulting in a smaller flow rate in the branch flow path 133. As the coolant flows, the heat loss of the coolant gradually increases. It can be understood that the time for the coolant to enter the first heat exchange zone 121 is t1, the time for the coolant to enter the second heat exchange zone 122 is t2, the time for the coolant to enter the third heat exchange zone 123 is t3, and the time for the coolant to enter the fourth heat exchange zone 124 is t4. Compared to the third heat exchange zone 123, the inlet 1410 of the second heat exchange zone 122 is... The distance between heat exchange zones 123 is less than the distance between inlet 1410 and the second heat exchange zone 122. Therefore, t3 > t2. Compared with the fourth heat exchange zone 124, the distance between inlet 1410 and the second heat exchange zone 122 is equal to the distance between inlet 1410 and the fourth heat exchange zone 124, i.e., t2 = t4. However, since the third heat exchange zone 123 and the fourth heat exchange zone 124 share the third inlet 1410, the efficiency of coolant entering the second heat exchange zone 122 is greater than the efficiency of coolant entering the fourth heat exchange zone 124. Thus, through the above settings, Q4 > Q2 > Q3 > Q1 can be made so that the coolant can achieve a more balanced heat exchange with 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, respectively.

[0072] 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.

[0073] It is understandable that the flow resistance of the coolant in the branch flow path 133 can be controlled by setting baffles or the cross-sectional area of ​​the branch flow path 133; no limitation is made here. Therefore, by setting S4 > S2 > S3 > S1, R1 > R3 > R2 > R4 can be achieved, thus Q4 > Q2 > Q3 > Q1.

[0074] In some embodiments, the heat exchange plate 100 includes a first heat exchange plate 100 and a second heat exchange plate 100. At least one of the first heat exchange plate 100 and the second heat exchange plate 100 has a cooling channel 13 formed on it. That is, the first heat exchange plate 100 may have a cooling channel 13 formed on it, or the second heat exchange plate 100 may have a cooling channel 13 formed on it, or both the first heat exchange plate 100 and the second heat exchange plate 100 may have a cooling channel 13. Preferably, in this embodiment, the first heat exchange plate 100 has a cooling channel 13 formed on it, and the second heat exchange plate 100 is a planar plate, which makes it easier for the heat exchange plate 100 to exchange heat with the battery pack.

[0075] Furthermore, both the first heat exchange plate 100 and the second heat exchange plate 100 are constructed as sheet metal parts. Thus, the first heat exchange plate 100 and the second heat exchange plate 100 can be spliced ​​together to form the 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. After the positioning is completed, the first heat exchange plate 100 and the second heat exchange plate 100 are connected together by brazing. This ensures the connection stability of the first heat exchange plate 100 and the second heat exchange plate 100 and makes the heat exchange plate 100 less prone to leakage.

[0076] The present invention also proposes a battery assembly.

[0077] According to an embodiment of the present invention, a battery assembly includes: a battery pack, wherein a plurality of battery packs are arranged sequentially in a first direction, and each battery pack is provided with a plurality of battery cells arranged sequentially in a second direction; a heat exchange plate 100, wherein the heat exchange plate 100 is configured as in any of the above embodiments, the heat exchange plate 100 is directly opposite to the battery pack; and an extension plate, wherein an extension channel communicating with an inlet 14 and an outlet 15 is formed on the extension plate.

[0078] Therefore, the outlet 15 and inlet 14 of the heat exchange plate 100 can be extended by the extension plate, so that the outlet 15 and 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 install the heat exchange plate 100 on the battery assembly.

[0079] The present invention also proposes a vehicle.

[0080] A vehicle according to an embodiment of the present invention includes: the battery assembly described in the above embodiment.

[0081] The vehicle according to the present invention is equipped with the battery assembly of the above embodiment, thus the vehicle has high operational stability.

[0082] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and 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 invention.

[0083] 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 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchange plate, characterized in that, include: The heat exchange plate body has a heat exchange surface formed on it that is suitable for facing the battery pack. The heat exchange plate body has a cooling channel and an inlet and an outlet connected to the cooling channel. in The cooling channel includes: The water inlet flow path and the water outlet flow path are provided, wherein the water inlet flow path is connected to the water inlet and 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 provided at the edge of the heat exchange plate body; Branch flow paths are constructed as multiple parallel and spaced-apart branches, each branch flow path being connected to the inlet flow path and the outlet flow path and facing the heat exchange surface to facilitate heat exchange with the battery pack. Multiple heat exchange zones are formed in an array on the heat exchange surface. The branch flow path is disposed within the heat exchange zone, and the inlet flow path and / or the outlet flow path is disposed at the edge of the heat exchange zone. The heat exchange zone includes: A first heat exchange zone is located adjacent to the water inlet, and the flow rate of the cooling channel within the first heat exchange zone is Q1; a second heat exchange zone is located on the side of the first heat exchange zone away from the water inlet, and the flow rate of the cooling channel within the second heat exchange zone is Q2; a third heat exchange zone is located adjacent to the water outlet, and the flow rate of the cooling channel within the third heat exchange zone is Q3; a fourth heat exchange zone is located on the side of the third heat exchange zone away from the water outlet, and the flow rate of the cooling channel within the fourth heat exchange zone is Q4; wherein, Q4 > Q2 > Q3 > Q1; The first heat exchange zone includes a first sub-zone and a second sub-zone that are connected in parallel and spaced apart in a first direction. The flow rate of the cooling channel in the first sub-zone is Q11, and the flow rate of the cooling channel in the second sub-zone is Q12. The second heat exchange zone includes a third sub-zone and a fourth sub-zone that are connected in parallel and spaced apart in a first direction; the fourth heat exchange zone includes a fifth sub-zone and a sixth sub-zone that are connected in parallel and spaced apart in a first direction; the third sub-zone and the sixth sub-zone are adjacent to each other; wherein the flow rate of the cooling channel in the third sub-zone is Q21, the flow rate of the cooling channel in the fourth sub-zone is Q22, Q21 < Q22; the flow rate of the cooling channel in the fifth sub-zone is Q41, the flow rate of the cooling channel in the sixth sub-zone is Q42, Q41 > Q42; The plurality of said branch flow paths include: The first branch flow path and the second branch flow path are respectively disposed on both sides of the heat exchange zone in the first direction; The third branch flow path is constructed in a plurality of interconnected structures, and the plurality of the third branch flow paths are disposed between the first branch flow path and the second branch flow path; wherein The first branch flow path and the second branch flow path are connected through multiple third branch flow paths; wherein In at least one heat exchange zone, the first branch flow path is connected to the inlet flow path, the second branch flow path is connected to the 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 inlet flow path, and at least one of the third branch flow paths are connected to the outlet flow path; The first sub-area and the second sub-area are respectively connected to the inlet on the side away from each other, and the first sub-area and the second sub-area are respectively connected to the outlet on the side closer to each other; The flow resistance of the branch flow path in the first heat exchange zone is R1, the flow resistance of the branch flow path in the second heat exchange zone is R2, the flow resistance of the branch flow path in the third heat exchange zone is R3, and the flow resistance of the branch flow path in the fourth heat exchange zone is R4, satisfying: R1 > R2, R3 > R4.

2. The heat exchange plate according to claim 1, characterized in that, In one of the heat exchange zones, a plurality of branch flow paths extend along a second direction and are spaced apart in a first direction. Coolant in at least one of the branch flow paths flows along a first flow direction, and coolant in at least another branch flow path flows along a second flow direction, wherein the first flow direction is opposite to the second flow direction.

3. The heat exchange plate according to claim 1, characterized in that, The cross-sectional area of ​​the branch flow path in the first heat exchange zone is S1, the cross-sectional area of ​​the branch flow path in the second heat exchange zone is S2, the cross-sectional area of ​​the branch flow path in the third heat exchange zone is S3, and the cross-sectional area of ​​the branch flow path in the fourth heat exchange zone is S4, satisfying: S4 > S3, S2 > S1.

4. A battery assembly, characterized in that, include: A battery pack, wherein a plurality of battery cells are arranged sequentially in a first direction and each battery pack is provided with a plurality of battery cells arranged sequentially in a second direction; A heat exchange plate, wherein the heat exchange plate is constructed as described in any one of claims 1-3, and the heat exchange plate is directly opposite the battery pack; An extension plate having an extension channel formed thereon that communicates with the inlet and the outlet.

5. A vehicle, characterized in that, include: The battery assembly as claimed in claim 4.

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