Battery cooling structure, battery pack, cooling system, and vehicle

Abstract

The present application relates to a battery cooling structure, a battery pack, a cooling system, and a vehicle. The battery cooling structure comprises: a main cooling plate, a substrate, and a jumper plate; the main cooling plate is provided with a main flow channel; the substrate is provided with a jumper hole, and the jumper hole runs through the substrate in the thickness direction of the substrate; and the jumper plate is provided with a secondary flow channel. The substrate is arranged between the main cooling plate and the jumper plate, and the jumper hole enables the main flow channel and the secondary flow channel to be communicated.

Description

Battery cooling structure, battery pack, cooling system and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202410868497.2, filed on June 28, 2024, to the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, in particular to a battery cooling structure, a battery pack, a cooling system and a vehicle. BACKGROUND

[0003] The battery thermal management system needs to maintain the battery pack at a temperature range of about 20-40 degrees Celsius while reducing the temperature difference inside the battery pack (temperature difference <5℃) as a basic guarantee for the normal operation of electric vehicles. The direct cooling system can quickly remove the heat generated by the battery by using the phase change heat transfer process of the refrigerant, which is a high-efficiency cooling system. TECHNICAL PROBLEM

[0004] However, the temperature difference between different areas of the direct cooling plate in the existing direct cooling system is relatively large, which leads to the problems of poor temperature uniformity of the direct cooling plate and uneven temperature distribution of the battery pack, and further affects the performance and service life of the battery. Therefore, it is necessary to provide a battery cooling structure, a battery pack, a cooling system and a vehicle to at least partially solve the above problems.

[0005] Therefore, it is urgent to design a battery cooling structure, a battery pack, a cooling system and a vehicle to solve the technical hidden danger. TECHNICAL SOLUTION

[0006] In a first aspect, the present application provides a battery cooling structure, comprising: a main cold plate, the main cold plate being provided with a main flow channel; a substrate, the substrate being provided with a jumper hole, the jumper hole penetrating through the substrate along the thickness direction of the substrate; a jumper plate, the jumper plate being provided with a secondary flow channel; wherein the substrate is arranged between the main cold plate and the jumper plate, and the jumper hole communicates the main flow channel and the secondary flow channel.

[0007] In a second aspect, the present application provides a battery pack, comprising the battery cooling structure.

[0008] In a third aspect, the present application provides a cooling system, comprising the battery cooling structure.

[0009] In a fourth aspect, the present application provides a vehicle, comprising the cooling system. ADVANTAGEOUS EFFECTS

[0010] The battery cooling structure provided in the application is provided with a jumper plate in a local part of the straight cooling plate, the flow channels corresponding to the main cooling plate and the jumper plate are communicated through the jumper holes on the base plate, the flow channel jumper function with low cost in small space is realized, the flow channels can be distributed on the straight cooling plate as needed, the complexity of flow channel arrangement is reduced, and the temperature uniformity of the straight cooling plate is improved.

[0011] The battery pack provided in the application uses the battery cooling structure, and the temperature uniformity of the battery pack is improved.

[0012] The cooling system provided in the application uses the battery pack, and the application range of the cooling system is improved.

[0013] The electric vehicle provided in the application uses the cooling system, and the stable operation of the electric vehicle can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] The following drawings of the embodiments of the application are hereby incorporated into the present application as a part of the present application for the purpose of understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application. In the drawings,

[0015] Fig. 1 is an exploded view of the battery cooling structure provided in the embodiment;

[0016] Fig. 2 is a sectional view along A-A in Fig. 1;

[0017] Fig. 3 is a schematic view of the battery cooling structure provided in the embodiment;

[0018] Fig. 4 is a perspective view of the cover plate provided in the embodiment;

[0019] Fig. 5 is an exploded view of the battery cooling structure provided in the embodiment;

[0020] Fig. 6 is a schematic view of the cooling system provided in the embodiment.

[0021] Explanation of reference numerals: 1: main cooling plate 11: first flow channel 12: second flow channel 13: fifth flow channel 14: sixth flow channel 15: seventh flow channel 16: eighth flow channel 2: base plate 21: first liquid port 22: second liquid port 23: first jumper hole 24: second jumper hole 25: third jumper hole 26: fourth jumper hole 27: fifth jumper hole 28: sixth jumper hole 3: jumper plate 31: third flow channel 32: fourth flow channel 4: first cover plate 41: first connection hole 42: second connection hole 43: first adjustment plate 44: second adjustment plate 5: second cover plate 6: compressor 7: condenser 8: second expansion valve 9: evaporator 10: second three-way valve 101: first valve 102: second valve 103: third valve 20: first expansion valve 30: first three-way valve 301: first valve 302: second valve 303: third valve

[0022] Embodiments of the present application

[0023] As shown in FIG. 1 and FIG. 2, in an embodiment, a battery cooling structure includes a main cooling plate 1, a base plate 2, and a jumper plate 3.

[0024] The main cooling plate 1 is provided with a main flow channel; the main flow channel is in a groove shape, and the groove opening can face the base plate 2.

[0025] The substrate 2 is provided with a jumper hole penetrating the substrate 2 along the thickness direction of the substrate 2;

[0026] The jumper plate 3 is provided with a secondary flow channel; the secondary flow channel is a groove, and the groove opening can face the substrate 2;

[0027] The substrate 2 is arranged between the main cold plate 1 and the jumper plate 3, and the jumper hole communicates the primary flow channel and the secondary flow channel.

[0028] The width of the primary flow channel and the secondary flow channel can be equal. The jumper hole can be a circular hole with a diameter not greater than the width of the primary flow channel and the secondary flow channel, which can avoid causing cooling liquid leakage.

[0029] The area of the jumper plate 3 is smaller than the substrate 2, and the jumper plate 3 is arranged on a part of the substrate 2 as needed. Multiple jumper plates 3 can be arranged on the substrate 2 to jumper at multiple positions.

[0030] The battery cooling structure in the embodiment is provided with a jumper plate on a part of the straight cold plate, and the primary flow channel and the corresponding flow channel on the jumper plate are communicated through the jumper hole on the substrate, thereby realizing the flow channel jumper function with small space and low cost. The flow channel can be distributed on the straight cold plate as needed, the complexity of flow channel arrangement is reduced, and the temperature uniformity of the straight cold plate is improved.

[0031] In one embodiment, the main cold plate 1 is provided with at least two discontinuous primary flow channels, the substrate 2 is provided with at least two jumper holes, the jumper plate 3 is provided with at least one secondary flow channel, and the two ends of the secondary flow channel are connected to the two jumper holes, respectively. The two jumper holes are connected to the two primary flow channels, respectively, so as to realize the communication of the two primary flow channels. The main cold plate 1 can be provided with more than two primary flow channels, which can be increased according to actual needs.

[0032] When there are two primary flow channels on the main cold plate 1 that are not directly communicated, jumpering is needed. For example, when the layout routes of the two primary flow channels intersect, but the intersection will cause cooling liquid circulation disorder, jumpering is needed. The two primary flow channels can be communicated by jumpering to skip the intersection position, without causing cooling liquid circulation disorder. Or there is an obstacle between the layout routes of the two primary flow channels, and the jumpering is needed to skip the obstacle to realize the communication of the two primary flow channels. The jumpering of the two primary flow channels can be realized by two jumper holes and one secondary flow channel, thereby realizing the flow channel jumper function with small space and low cost.

[0033] In one embodiment, as shown in FIG. 1, the substrate 2 is further provided with:

[0034] A first liquid port 21 penetrating the substrate 2 along the thickness direction of the substrate 2, the first liquid port 21 communicating the primary flow channel, and being used for inputting or outputting cooling liquid;

[0035] A second liquid port 22 penetrates the substrate 2 along the thickness direction of the substrate 2, and the second liquid port 22 communicates with the main flow channel and is used for outputting or inputting the cooling liquid.

[0036] When the first liquid port 21 is used for inputting the cooling liquid, the second liquid port 22 is used for outputting the cooling liquid, and when the first liquid port 21 is used for outputting the cooling liquid, the second liquid port 22 is used for inputting the cooling liquid, so that the flow direction of the cooling liquid in the direct cooling plate can be changed, and the temperature uniformity of the direct cooling plate can be further improved. As shown in FIG. 1, when the position of the jumper plate 3 interferes with the positions of the first liquid port 21 and the second liquid port 22, a notch can be provided on the jumper plate 3 to avoid the first liquid port 21 and the second liquid port 22.

[0037] In an embodiment, as shown in FIG. 1, the main flow channel at least includes:

[0038] A first flow channel 11, a first end of the first flow channel 11 communicates with the first liquid port 21;

[0039] A fifth flow channel 13, a first end of the fifth flow channel 13 communicates with the second liquid port 22;

[0040] The auxiliary flow channel at least includes:

[0041] A third flow channel 31, a first end of the third flow channel 31 is connected to a second end of the first flow channel 11 through a jumper hole, and a second end of the third flow channel 31 is connected to a second end of the fifth flow channel 13 through the jumper hole.

[0042] There is an obstacle between the first flow channel 11 and the fifth flow channel 13, so they cannot continue to extend and are not directly communicated, at this time, the jumper is needed, and the jumper can jump over the obstacle to realize the communication of the first flow channel 11 and the fifth flow channel 13. The jumper of the first flow channel 11 and the fifth flow channel 13 can be realized through the third flow channel 31.

[0043] In an embodiment, as shown in FIG. 1, the jumper hole at least includes:

[0044] A first jumper hole 23, the first jumper hole 23 communicates a second end of the first flow channel 11 and a first end of the third flow channel 31, to realize the communication of the first flow channel 11 and the third flow channel 31;

[0045] A third jumper hole 25, the third jumper hole 25 communicates a second end of the fifth flow channel 13 and a second end of the third flow channel 31, to realize the communication of the fifth flow channel 13 and the third flow channel 31.

[0046] In an embodiment, as shown in FIG. 3, the main flow channel at least further includes:

[0047] A seventh flow channel 15, a first end of the seventh flow channel 15 communicates with any part between the two ends of the first flow channel 11;

[0048] The eighth flow channel 16 is in communication with any part between the first end of the eighth flow channel 16 and the two ends of the fifth flow channel 13;

[0049] The first end of the third flow channel 31 is connected with the second end of the seventh flow channel 15 through a jumper hole, and the second end of the third flow channel 31 is connected with the second end of the eighth flow channel 16 through a jumper hole.

[0050] The seventh flow channel 15 is in series with part of the first flow channel 11 and in parallel with the rest of the first flow channel 11. The eighth flow channel 16 is in series with part of the fifth flow channel 13 and in parallel with the rest of the fifth flow channel 13. The seventh flow channel 15 and the eighth flow channel 16 are added according to actual needs, and can be added at positions where the first flow channel 11 and the fifth flow channel 13 cannot be extended, so that the main flow channel is more fully distributed on the main cold plate 1.

[0051] In one embodiment, as shown in FIG. 3, the jumper hole at least includes:

[0052] The fifth jumper hole 27 is in communication with the second end of the first flow channel 11, the second end of the seventh flow channel 15, and the first end of the third flow channel 31.

[0053] The sixth jumper hole 28 is in communication with the second end of the fifth flow channel 13, the second end of the eighth flow channel 16, and the second end of the third flow channel 31.

[0054] The fifth jumper hole 27 and the sixth jumper hole 28 are both in communication with three flow channels at the same time.

[0055] In one embodiment, as shown in FIG. 1, the main flow channel at least further includes:

[0056] The second flow channel 12 is in communication with the first end of the second flow channel 12 and the first liquid port 21.

[0057] The sixth flow channel 14 is in communication with the first end of the sixth flow channel 14 and the second liquid port 22.

[0058] The auxiliary flow channel at least includes:

[0059] The fourth flow channel 32 is connected with the second end of the second flow channel 12 through a jumper hole at the first end of the fourth flow channel 32, and is connected with the second end of the sixth flow channel 14 through a jumper hole at the second end of the fourth flow channel 32.

[0060] The second flow channel 12 and the sixth flow channel 14 cross each other and cannot be continuously extended. If they are directly connected, they will cross the second flow channel 12 itself and cause confusion in the circulation of the cooling liquid. Therefore, they are not directly connected, and at this time, they need to be jumpered. The jumpering can jump over the crossing position to realize the connection of the second flow channel 12 and the sixth flow channel 14. The jumpering of the second flow channel 12 and the sixth flow channel 14 can be realized through the fourth flow channel 32.

[0061] The shapes of the third flow channel 31 and the fourth flow channel 32 are designed according to the main flow channels to be connected. In the figure, the third flow channel 31 and the fourth flow channel 32 are both L-shaped.

[0062] In an embodiment, as shown in FIG. 1, the jumpering hole at least includes:

[0063] The first jumpering hole 23 connects the second end of the first flow channel 11 and the first end of the third flow channel 31, realizing the connection of the first flow channel 11 and the third flow channel 31.

[0064] The second jumpering hole 24 connects the second end of the second flow channel 12 and the first end of the fourth flow channel 32, realizing the connection of the second flow channel 12 and the fourth flow channel 32.

[0065] The third jumpering hole 25 connects the second end of the fifth flow channel 13 and the second end of the third flow channel 31, realizing the connection of the fifth flow channel 13 and the third flow channel 31.

[0066] The fourth jumpering hole 26 connects the second end of the sixth flow channel 14 and the second end of the fourth flow channel 32, realizing the connection of the sixth flow channel 14 and the fourth flow channel 32.

[0067] The size of the jumpering plate 3 is not uniform, and the shape can be regular, such as rectangular, or irregular, which is determined according to the number of the sub-flow channels and the shape of the sub-flow channels.

[0068] In an embodiment, as shown in FIG. 4 and FIG. 5, the battery cooling structure further includes:

[0069] The cover plate is provided with a connecting hole, and the cover plate is arranged between the substrate 2 and the jumpering plate 3. The connecting hole connects the jumpering hole and the sub-flow channel, and the size of the connecting hole can be adjusted to achieve the effect of adjusting the refrigerant pressure and evaporation temperature on the direct cooling plate.

[0070] Or the cover plate is arranged between the substrate 2 and the main cooling plate 1, the connecting hole connects the jumpering hole and the main flow channel, and the size of the connecting hole can be adjusted to achieve the effect of adjusting the refrigerant pressure and evaporation temperature on the direct cooling plate.

[0071] In an embodiment, as shown in FIG. 4 and FIG. 5, the cover plate is provided with an adjusting plate arranged at the connecting hole for adjusting the size of the connecting hole.

[0072] Each adjustable connection hole has two symmetrical adjusting plates, and the opening and closing of the adjusting plates can be controlled by an electrical signal determined based on the superheat of the refrigerant at the outlet of the cold plate and the maximum temperature difference of the battery, so as to adjust the refrigerant pressure and evaporation temperature on the cold plate. The two adjusting plates can be opened and closed at the same time, so that when the connection hole is at different opening degrees, the refrigerant can always flow from the center of the jumper hole, improving the uniformity of the refrigerant distribution.

[0073] The number of cover plates can be determined according to the number of jumper holes that need to be controlled. In FIG. 5, two cover plates are included, which are a first cover plate 4 and a second cover plate 5. The first cover plate 4 controls the third jumper hole 25 and the fourth jumper hole 26, and the second cover plate 5 controls the first jumper hole 23 and the second jumper hole 24.

[0074] The first cover plate 4 and the second cover plate 5 have the same structure. Taking the first cover plate 4 as an example, the first cover plate 4 is provided with a first connection hole 41 and a second connection hole 42. The first connection hole 41 is provided with a first adjusting plate 43, and the second connection hole 42 is provided with a second adjusting plate 44.

[0075] The size of the cover plate is not uniform, and the shape can be regular, such as rectangular, or irregular, determined according to the number of connection holes and the layout shape of the connection holes.

[0076] The centers of all the holes described above coincide with the centers of the corresponding flow channels, so that the flow channels are reliably connected, and the cooling liquid can flow smoothly in the flow channels.

[0077] In an embodiment, as shown in FIG. 1, the substrate 2 and the jumper plate 3 are sealed and connected by welding, to ensure that no cooling liquid leaks, for example, the sealing and connection can be achieved by brazing.

[0078] And / or, the substrate 2 and the cover plate are sealed and connected by welding, and the cover plate and the main cold plate 1 are sealed and connected by welding, to ensure that no cooling liquid leaks, for example, the sealing and connection can be achieved by brazing.

[0079] The second aspect of the present application provides a battery pack comprising the battery cooling structure of any one of the above technical solutions.

[0080] In an embodiment, the battery pack further comprises:

[0081] A battery pack tray, and the battery cooling structure is arranged at the bottom of the battery pack tray. The battery pack tray usually includes a bottom plate, a frame, a top cover and the like, and the battery cooling structure can be arranged in the bottom plate.

[0082] As shown in FIG. 6, the third aspect of the present application provides a cooling system comprising the battery cooling structure of any one of the above technical solutions.

[0083] In one embodiment, as shown in FIG. 6, the cooling system further comprises:

[0084] a compressor 6, the compressor 6 being configured to compress the cooling liquid;

[0085] a condenser 7, an inlet of the condenser 7 being connected to an outlet of the compressor 6.

[0086] In one embodiment, as shown in FIG. 6, the cooling system further comprises:

[0087] a first expansion valve 20, an inlet of the first expansion valve 20 being connected to an outlet of the condenser 7;

[0088] a first three-way valve 30, the first three-way valve 30 comprising a first valve 301, a second valve 302 and a third valve 303;

[0089] the first valve 301 being connected to an outlet of the first expansion valve 20, the second valve 302 being connected to the first liquid port 21 of the battery cooling structure, and the third valve 303 being connected to the second liquid port 22 of the battery cooling structure.

[0090] In one embodiment, as shown in FIG. 6, the cooling system further comprises:

[0091] a second three-way valve 10, the second three-way valve 10 comprising a first valve 101, a second valve 102 and a third valve 103;

[0092] the first valve 101 being connected to an inlet of the compressor 6, the second valve 102 being connected to the first liquid port 21 of the battery cooling structure, and the third valve 103 being connected to the second liquid port 22 of the battery cooling structure.

[0093] In one embodiment, as shown in FIG. 6, the cooling system further comprises:

[0094] a second expansion valve 8, an inlet of the second expansion valve 8 being connected to an outlet of the condenser 7;

[0095] an evaporator 9, an inlet of the evaporator 9 being connected to an outlet of the second expansion valve 8, and an outlet of the evaporator 9 being connected to an inlet of the compressor 6.

[0096] The evaporator 9 is arranged in the passenger compartment, and the cooling liquid flows through the evaporator 9 to evaporate and absorb heat, thereby cooling the passenger compartment.

[0097] The three-way valve in the above embodiment is an electromagnetic three-way valve, each valve of the three-way valve only has a switching function and cannot adjust the opening degree of the valve. The cooling medium in the battery pack direct cooling plate is air conditioning refrigerant, the battery pack cooling pipeline is connected in parallel with the passenger compartment evaporator 9 and shares a set of compressor 6 and condenser 7, in the working condition that the passenger compartment air conditioner is turned on (the compressor 6 is turned on, and the second expansion valve 8 is turned on) and the battery pack cooling is not turned on, the first expansion valve 20 is closed, and all valves of the first three-way valve 30 and the second three-way valve 10 are opened, at this time, no refrigerant flows in the cooling plate flow channel. When the temperature of the battery cell rises to a preset value, the first expansion valve 20 is opened, the first valve 301 of the first three-way valve 30 is opened, the second valve 302 is opened, the third valve 303 is closed, the first valve 101 of the second three-way valve 10 is opened, the second valve 102 is closed, and the third valve 103 is opened, then the refrigerant flows into the direct cooling plate for battery cell cooling through the first liquid port 21. When the superheat degree of the refrigerant at the outlet of the direct cooling plate and the maximum temperature difference of the battery exceed the preset value, the second valve 302 of the first three-way valve 30 is closed, the third valve 303 is opened, the second valve 102 of the second three-way valve 10 is opened, and the third valve 103 is closed, so as to switch the inlet of the direct cooling plate, thereby providing more sufficient cold quantity for the high-temperature region of the battery cell, improving the temperature uniformity of the direct cooling plate, and reducing the temperature difference of the battery pack.

[0098] During the flow of the cooling liquid, the jumper hole and the jumper plate can also throttle the refrigerant, and by reducing the aperture of the jumper hole, the pressure and evaporation temperature of the refrigerant on the direct cooling plate (the bottom plate of the battery pack tray) can be effectively improved, thereby reducing the refrigeration capacity of the refrigerant at the inlet region, avoiding the battery cell in the inlet region being always in a low-temperature state, and realizing the enhancement of the flow uniformity of the cooling plate. When the three-way valve is used to switch the inlet of the direct cooling plate to the second liquid port 22, the flow direction of the refrigerant is just opposite to that when the inlet is the first liquid port 21, and the cooling liquid will flow through the jumper hole and the jumper plate 3 first, and the jumper hole will throttle the refrigerant in the two-phase state, so that the gas-liquid two-phase flow is more uniformly distributed, and the temperature difference on the direct cooling plate is further reduced.

[0099] The fourth aspect of the present application provides a vehicle comprising the cooling system of any one of the above technical solutions.

[0100] The vehicle can be a pure electric vehicle or a hybrid electric vehicle, and the vehicle is provided with a battery pack as an energy storage component.

[0101] The battery cooling structure, the battery pack, the cooling system and the vehicle of the present application have the following characteristics:

[0102] The main cold plate and the corresponding flow channel groove on the local jumper plate are communicated through the jumper through hole on the substrate, realizing the flow channel jumper function with small space and low cost, reducing the complexity of flow channel arrangement, and improving the uniformity of cold plate flow. Further, based on the superheat degree of the refrigerant at the outlet of the cold plate and the maximum temperature difference of the battery, a scheme is proposed to realize dynamic switching of the inlet and outlet of the cold plate by using a three-way valve, so as to always provide sufficient cold energy for the high-temperature region of the battery cell, and achieve the effect of improving the temperature consistency of the battery.

[0103] When the refrigerant is set to flow out of the cold plate through the local jumper plate, a double-core adjustable orifice structure is used to control the opening of the jumper through hole, so as to adjust the pressure and evaporation temperature of the refrigerant on the cold plate, avoid causing local low temperature of the battery cell, and realize reasonable distribution of cold energy. When the refrigerant is set to flow into the cold plate through the local jumper plate, the jumper through hole will throttle the refrigerant in two-phase state, so as to make the gas-liquid two-phase flow more uniform, thereby reducing the temperature difference of the cold plate.

[0104] The processes and steps described in the above embodiments are only examples. Unless an adverse effect occurs, various processing operations can be performed in a sequence different from the above processes. The sequence of steps of the above processes can also be added, combined or deleted according to actual needs.

[0105] In understanding the scope of the present application, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the stated features, elements, components, groups, integers, and / or steps, but do not exclude the presence of other unstated features, elements, components, groups, integers and / or steps. The use of the term "comprising" also includes the use of the term "including" and variants thereof, such as "include", "has", "have", and the like.

[0106] The term "attached" or "attach" as used herein includes a configuration in which an element is directly fixed to another element by fixing the element to the other element, a configuration in which an element is indirectly fixed to another element by fixing the element to an intermediate member which in turn is fixed to the other element, and a configuration in which one element is integral with another element, i.e., one element is essentially a part of the other element. This definition also applies to words with similar meanings, such as "connected", "coupled", "engaged", "fixed", "bonded", "secured", and derivatives thereof. Finally, the degree terms such as "substantially", "approximately" and "about" as used herein mean an amount of deviation that does not significantly change the end result.

[0107] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The features described in one embodiment can be applied to another embodiment, mutatis mutandis, unless that embodiment is inherently incompatible with the other embodiment.

[0108] The application has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and description, and are not intended to limit the application to the scope of the described embodiments. Furthermore, those skilled in the art can understand that the application is not limited to the above embodiments, and more various modifications and changes can be made according to the teachings of the application, which all fall within the scope of the application claimed.

Claims

1. A battery cooling structure, comprising: Main cold plate (1), wherein the main cold plate (1) is provided with a main channel; The substrate (2) is provided with a jumper hole, which penetrates the substrate (2) along the thickness direction of the substrate (2); Jumper plate (3), wherein the jumper plate (3) is provided with a secondary flow channel; The substrate (2) is disposed between the main cold plate (1) and the jumper plate (3), and the jumper hole connects the main flow channel and the secondary flow channel.

2. The battery cooling structure according to claim 1, wherein, The main cold plate (1) is provided with at least two discontinuous main channels, the substrate (2) is provided with at least two jumper holes, and the jumper plate (3) is provided with at least one secondary channel. The two ends of the secondary channel are respectively connected to two jumper holes, and the two jumper holes are respectively connected to two main channels, thereby realizing the connection of the two main channels.

3. The battery cooling structure according to claim 1, wherein, The main channel includes at least: The first flow channel (11) is adapted to communicate with the first liquid outlet (21) at its first end; The fifth flow channel (13) has a first end adapted to be connected to the second liquid outlet (22); The secondary flow channel includes at least: The third flow channel (31) has its first end connected to the second end of the first flow channel (11) through the jumper hole, and its second end connected to the second end of the fifth flow channel (13) through the jumper hole.

4. The battery cooling structure according to claim 3, wherein, The jumper hole includes at least: The first jumper hole (23) connects the second end of the first flow channel (11) and the first end of the third flow channel (31); The third jumper hole (25) connects the second end of the fifth flow channel (13) and the second end of the third flow channel (31).

5. The battery cooling structure according to claim 3, wherein, The main channel also includes at least: The seventh flow channel (15) is connected to any part between the first end of the seventh flow channel (15) and the two ends of the first flow channel (11); The eighth flow channel (16) is connected to any part between the first end of the eighth flow channel (16) and the two ends of the fifth flow channel (13); The first end of the third flow channel (31) is connected to the second end of the seventh flow channel (15) through the jumper hole, and the second end of the third flow channel (31) is connected to the second end of the eighth flow channel (16) through the jumper hole.

6. The battery cooling structure according to claim 5, wherein, The jumper hole includes at least: The fifth jumper hole (27) connects the second end of the first flow channel (11), the second end of the seventh flow channel (15), and the first end of the third flow channel (31); The sixth jump hole (28) connects the second end of the fifth flow channel (13), the second end of the eighth flow channel (16), and the second end of the third flow channel (31).

7. The battery cooling structure according to claim 3, wherein, The main channel also includes at least: The second flow channel (12) is connected to the first liquid outlet (21) at its first end. The sixth flow channel (14) is connected at its first end to the second liquid outlet (22); The secondary flow channel also includes at least: The fourth flow channel (32) is connected at its first end to the second end of the second flow channel (12) via the jumper hole, and at its second end to the second end of the sixth flow channel (14) via the jumper hole.

8. The battery cooling structure according to claim 7, wherein, The jumper hole includes at least: The first jumper hole (23) connects the second end of the first flow channel (11) and the first end of the third flow channel (31); The second jumper hole (24) connects the second end of the second flow channel (12) and the first end of the fourth flow channel (32); The third jump connection hole (25) connects the second end of the fifth flow channel (13) and the second end of the third flow channel (31); The fourth jumper hole (26) connects the second end of the sixth flow channel (14) and the second end of the fourth flow channel (32).

9. The battery cooling structure according to any one of claims 3-8, wherein, The first liquid port and / or the second liquid port are disposed on the substrate (2), and the first liquid port and / or the second liquid port penetrate the substrate (2) along the thickness direction of the substrate (2).

10. The battery cooling structure according to claim 1, wherein, Also includes: A cover plate, wherein the cover plate is provided with a connecting hole, the cover plate is disposed between the substrate (2) and the jumper plate (3), the connecting hole is connected to the jumper hole and the secondary flow channel, or the cover plate is disposed between the substrate (2) and the main cold plate (1), the connecting hole is connected to the jumper hole and the main flow channel, and the diameter of the connecting hole is adjustable.

11. The battery cooling structure according to claim 10, wherein, The cover plate is provided with an adjustment plate, which is located at the connection hole and is used to adjust the diameter of the connection hole.

12. The battery cooling structure according to claim 10, wherein, The substrate (2) is welded and sealed to the jumper plate (3); And / or, the substrate (2) is welded and sealed to the cover plate, and the cover plate is welded and sealed to the main cold plate (1).

13. A battery pack comprising a battery cooling structure according to any one of claims 1-12.

14. The battery pack according to claim 13, wherein, Also includes: A battery pack tray, wherein the battery cooling structure is disposed at the bottom of the battery pack tray.

15. A cooling system, comprising: Compressor (6), said compressor (6) is used to compress coolant; A condenser (7) has its inlet connected to the outlet of the compressor (6); And, the battery cooling structure according to any one of claims 1-12.

16. The cooling system according to claim 15, wherein, Also includes: A first expansion valve (20) is connected to the outlet of the condenser (7) via its inlet. The first three-way valve (30) includes a first valve (301), a second valve (302) and a third valve (303); The first valve (301) is connected to the outlet of the first expansion valve (20), the second valve (302) is connected to the first liquid port (21) of the battery cooling structure, and the third valve (303) is connected to the second liquid port (22) of the battery cooling structure.

17. The cooling system according to claim 15, wherein, Also includes: The second three-way valve (10) includes a first valve (101), a second valve (102) and a third valve (103); The first valve (101) is connected to the inlet of the compressor (6), the second valve (102) is connected to the first liquid port (21) of the battery cooling structure, and the third valve (103) is connected to the second liquid port (22) of the battery cooling structure.

18. The cooling system according to claim 15, wherein, Also includes: A second expansion valve (8) is connected to the outlet of the condenser (7) through its inlet. Evaporator (9), the inlet of which is connected to the outlet of the second expansion valve (8), and the outlet of which is connected to the inlet of the compressor (6).

19. A vehicle comprising the cooling system according to claims 15-18.

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