Liquid cooling assembly, liquid cooling system, battery pack and new energy automobile

Abstract

The embodiment of the utility model provides a liquid cooling assembly, a liquid cooling system, a battery pack and a new energy automobile, and relates to the technical field of power batteries. The liquid cooling assembly comprises a liquid cooling plate, a first heat conduction pad, a first connector and a second connector, the two opposite sides of the liquid cooling plate are each provided with a flow channel part and an energy absorption part, the flow channel parts and the energy absorption parts are arranged at intervals, a first mounting groove is formed among the flow channel parts, the energy absorption parts and the side face of the liquid cooling plate, and the first heat conduction pad is arranged in the first mounting groove. The flow channel part is provided with a liquid cooling flow channel, the energy absorption part is provided with an energy absorption cavity and an exhaust hole, and the energy absorption cavity communicates with the exhaust hole; the first connector and the second connector penetrate through the liquid cooling plate and are located at the two ends of the flow channel part respectively, and the first connector and the second connector communicate with the liquid cooling flow channel. The problems of deformation and displacement of the liquid cooling plate caused by the expansion force of the battery cell can be solved, and the sealing performance and the heat conductivity of the liquid cooling plate are improved.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, specifically to a liquid cooling component, a liquid cooling system, a battery pack, and a new energy vehicle. Background Technology

[0002] In the power battery industry, designing a safe, reliable, and durable battery system is essential for the healthy development of the new energy vehicle industry, in order to meet the demands of new energy vehicles for high energy and long lifespan. Battery packs in new energy vehicles typically employ liquid-cooled thermal management methods, such as using liquid cooling plates bonded to the battery cells for heat conduction.

[0003] However, high-energy-density battery cells have a large expansion force during charging and discharging, and this expansion force increases with the number of cycles. This means that the bonded liquid cooling plate needs to continuously withstand the expansion force of the battery cell, which can easily cause deformation and displacement of the liquid cooling plate, affecting its sealing and thermal conductivity. Utility Model Content

[0004] The purpose of this invention is to provide a liquid cooling component, a liquid cooling system, a battery pack, and a new energy vehicle, which can solve the problem of deformation and displacement of the liquid cooling plate caused by the expansion force of the battery cell, and improve the sealing and thermal conductivity of the liquid cooling plate.

[0005] The embodiments of this utility model are implemented as follows:

[0006] In a first aspect, this utility model provides a liquid cooling assembly, comprising:

[0007] A liquid-cooled plate has flow channels and energy-absorbing sections on opposite sides. The flow channels and energy-absorbing sections are spaced apart, and a first mounting groove is formed between the flow channels, the energy-absorbing sections, and the side surface of the liquid-cooled plate. The flow channels have liquid-cooled flow channels, and the energy-absorbing sections have energy-absorbing chambers and exhaust holes. The energy-absorbing chambers are connected to the exhaust holes.

[0008] The first thermal pad is disposed in the first mounting groove;

[0009] The first connector and the second connector are both inserted through the liquid cooling plate and are located at both ends of the flow channel. The first connector and the second connector are both connected to the liquid cooling flow channel.

[0010] In an optional embodiment, the energy-absorbing part is provided with a second mounting groove, and the liquid cooling assembly further includes a second thermally conductive pad, which is disposed in the second mounting groove.

[0011] In an optional embodiment, the flow channel portion includes a first flow channel portion and a second flow channel portion, the first flow channel portion and the second flow channel portion are connected end to end and form an annular structure, the first flow channel portion has a first liquid cooling flow channel, the second flow channel portion has a second liquid cooling flow channel, and the first liquid cooling flow channel and the second liquid cooling flow channel are connected end to end to form the liquid cooling flow channel;

[0012] The energy-absorbing part is located between the first flow channel part and the second flow channel part.

[0013] In an optional embodiment, the liquid cooling assembly further includes a third thermally conductive pad, which is snapped onto one end of the liquid cooling plate and located on the side of the first flow channel portion away from the energy-absorbing portion; and / or,

[0014] The liquid cooling assembly also includes a fourth thermal pad, which is snapped onto one end of the liquid cooling plate and located on the side of the second flow channel away from the energy absorption section.

[0015] In an optional embodiment, a first flow channel hole and a second flow channel hole are respectively provided at both ends of the flow channel portion, and both the first flow channel hole and the second flow channel hole are in communication with the liquid cooling flow channel.

[0016] The first connector includes a first sub-connector and a second sub-connector. The first sub-connector is disposed on one side of the first flow channel hole, and the second sub-connector is disposed on the other side of the first flow channel hole. Both the first sub-connector and the second sub-connector are in communication with the first flow channel hole.

[0017] The second connector includes a third sub-connector and a fourth sub-connector. The third sub-connector is disposed on one side of the second flow channel hole, and the fourth sub-connector is disposed on the other side of the second flow channel hole. Both the third sub-connector and the fourth sub-connector are in communication with the second flow channel hole.

[0018] In an optional embodiment, the first sub-connector has a first flow-limiting notch at one end near the first flow channel hole; and / or,

[0019] The second sub-connector has a second flow-limiting notch at one end near the first flow channel hole; and / or,

[0020] The third sub-connector has a third flow-limiting notch at one end near the second flow channel hole; and / or

[0021] The fourth sub-connector has a fourth flow-limiting notch at one end near the second flow channel hole.

[0022] Secondly, this utility model provides a liquid cooling system, including a plurality of liquid cooling components as described in any of the foregoing embodiments, wherein the plurality of liquid cooling plates are spaced apart, and a battery mounting space is formed between two adjacent liquid cooling plates; two adjacent first connectors are connected, and two adjacent second connectors are connected.

[0023] In an optional embodiment, a plurality of first connectors are spaced apart, and a plurality of second connectors are spaced apart; the liquid cooling system further includes a plurality of first flexible connecting tubes and a plurality of second flexible connecting tubes, wherein the two ends of each first flexible connecting tube are respectively connected to two adjacent first connectors, and the two ends of each second flexible connecting tube are respectively connected to two adjacent second connectors.

[0024] Thirdly, this utility model provides a battery pack, including multiple battery packs and the liquid cooling system described in the foregoing embodiments, wherein the multiple battery packs are respectively disposed in multiple battery mounting spaces.

[0025] Fourthly, this utility model provides a new energy vehicle, including the battery pack described in the foregoing embodiments.

[0026] The beneficial effects of this utility model embodiment include:

[0027] The liquid cooling assembly includes a liquid cooling plate, a first thermally conductive pad, a first connector, and a second connector. The liquid cooling plate has a flow channel and an energy-absorbing section on opposite sides, spaced apart. A first mounting groove is formed between the flow channel, the energy-absorbing section, and the side of the liquid cooling plate, and the first thermally conductive pad is disposed within the first mounting groove. The flow channel has a liquid cooling channel, and the energy-absorbing section has an energy-absorbing cavity and an exhaust port, which are connected. The first connector and the second connector both pass through the liquid cooling plate and are located at opposite ends of the flow channel, respectively, and are connected to the liquid cooling channel.

[0028] As is easily understood, the coolant enters the liquid cooling channel through one of the first and second connectors and flows out through the other, thereby conducting heat to the battery cell that is in contact with the liquid cooling plate. Because the energy-absorbing section has an energy-absorbing cavity, it acts as a buffer. When the battery cell expands, it compresses the energy-absorbing section, causing the gas inside the energy-absorbing cavity to escape through the exhaust port, thus providing energy absorption and buffering. Simultaneously, by placing a first thermally conductive pad in the first mounting groove, not only is the heat conduction effect improved, but it also works in conjunction with the energy-absorbing section to buffer the energy absorption of the battery cell. This solves the problem of deformation and displacement of the liquid cooling plate caused by the expansion force of the battery cell, improving the sealing and thermal conductivity of the liquid cooling plate.

[0029] The liquid cooling system includes a liquid cooling component and has all the beneficial effects of that liquid cooling component.

[0030] The battery pack includes a liquid cooling system, which has all the benefits of such a liquid cooling system.

[0031] New energy vehicles include battery packs, which have all the beneficial effects of those battery packs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of a new energy vehicle provided in an embodiment of this utility model;

[0034] Figure 2 This is a schematic diagram of the battery pack provided in an embodiment of the present utility model;

[0035] Figure 3 This is a schematic diagram of the liquid cooling system provided in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of the liquid cooling assembly provided in an embodiment of the present invention;

[0037] Figure 5 An exploded view of the liquid cooling assembly provided in an embodiment of this utility model;

[0038] Figure 6 This is a schematic diagram of the structure of the liquid cooling plate provided in an embodiment of the present utility model;

[0039] Figure 7 This is a partial structural schematic diagram of the liquid cooling plate provided in an embodiment of the present utility model;

[0040] Figure 8 This is a schematic diagram of the structure of the first sub-connector and the third sub-connector provided in an embodiment of the present utility model;

[0041] Figure 9 This is a schematic diagram of the structure of the second sub-connector and the fourth sub-connector provided in an embodiment of the present utility model.

[0042] Icons: 1000 - New Energy Vehicle; 1100 - Battery Pack; 110 - Liquid Cooling System; 100 - Liquid Cooling Component; 10 - Liquid Cooling Plate; 11 - Flow Channel; 111 - Liquid Cooling Flow Channel; 112 - First Flow Channel; 1211 - First Liquid Cooling Flow Channel; 113 - Second Flow Channel; 1131 - Second Liquid Cooling Flow Channel; 114 - First Flow Channel Hole; 115 - Second Flow Channel Hole; 12 - Energy Absorption Section; 121 - Energy Absorption Chamber; 122 - Exhaust Hole; 13 - First Mounting Groove; 14 - Second Mounting Groove; 20 - First Thermal Pad; 30 - First connector; 31- First sub-connector; 311- First current limiting notch; 32- Second sub-connector; 321- Second current limiting notch; 40- Second connector; 41- Third sub-connector; 411- Third current limiting notch; 42- Fourth sub-connector; 421- Fourth current limiting notch; 50- Second thermal pad; 60- Third thermal pad; 70- Fourth thermal pad; 200- Battery mounting space; 300- First flexible connecting tube; 400- Second flexible connecting tube; 120- Battery pack; 1201- Cell; 1200- Vehicle body. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] As described in the background section, battery packs in new energy vehicles typically employ liquid cooling for thermal management, such as using liquid cooling plates bonded to the battery cells for heat conduction. However, high-energy-density battery cells experience significant expansion forces during charging and discharging, and these forces increase with the number of cycles. This forces the bonded liquid cooling plates to continuously withstand the expansion forces from the battery cells, potentially causing deformation and displacement of the liquid cooling plates and affecting their sealing and thermal conductivity.

[0050] Based on this, please refer to Figures 1-9 This utility model provides a liquid cooling component 100, a liquid cooling system 110, a battery pack 1100, and a new energy vehicle 1000, which can effectively improve the aforementioned technical problems. Specifically, it can solve the problem of deformation and displacement of the liquid cooling plate 10 caused by the expansion force of the battery cell 1201, and improve the sealing and thermal conductivity of the liquid cooling plate 10. The liquid cooling component 100, liquid cooling system 110, battery pack 1100, and new energy vehicle 1000 will be described in detail below.

[0051] Please refer to Figure 1 , Figure 1This is a structural schematic diagram of the new energy vehicle 1000 provided in this embodiment, combined with... Figure 1 The new energy vehicle 1000 includes a battery pack 1100 and a vehicle body 1200. The battery pack 1100 is installed on the vehicle body 1200 to provide electrical energy to the vehicle body 1200 so as to realize the various functions of the vehicle body 1200.

[0052] For details, please refer to Figure 2 , Figure 2 This is a structural schematic diagram of the battery pack 1100 provided in this embodiment, combined with... Figure 2 The battery pack 1100 includes a liquid cooling system 110 and multiple battery packs 120. Each battery pack 120 includes multiple battery cells 1201 arranged in sequence. It is easy to understand that the liquid cooling system 110 is used to conduct heat to the battery cells 1201.

[0053] It should be noted that the battery pack 1100 may also include a battery housing, with the liquid cooling system 110 and multiple battery packs 120 all disposed within the battery housing. As will be readily apparent to those skilled in the art, the battery pack 1100 may also include structural components for securing the liquid cooling system 110 and the battery packs 120. Of course, the battery pack 1100 may also include a battery management system, wiring harnesses, and other components, which will not be elaborated upon in this embodiment.

[0054] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the liquid cooling system 110 provided in this embodiment, combined with... Figure 3 The liquid cooling system 110 includes multiple liquid cooling components 100 connected in sequence, with a battery mounting space 200 provided between each adjacent liquid cooling component 100. Figure 2 and Figure 3 Understandably, multiple battery packs 120 are respectively arranged in multiple battery installation spaces 200, so that both sides of each battery pack 120 are in contact with the liquid cooling component 100 to improve the thermal conductivity of the battery pack 120.

[0055] Further, please refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the structure of the liquid cooling assembly 100 provided in this embodiment. Figure 5 This is an exploded view of the liquid cooling assembly 100 provided in this embodiment, combined with... Figure 4 and Figure 5The liquid cooling assembly 100 includes a liquid cooling plate 10, a first thermally conductive pad 20, a first connector 30, and a second connector 40. The liquid cooling plate 10 has flow channels 11 and energy-absorbing sections 12 on opposite sides. The flow channels 11 supply coolant, the energy-absorbing sections 12 absorb energy from the expansion force of the battery cell 1201, the first thermally conductive pad 20 effectively transfers heat from the battery cell 1201 to the liquid cooling plate 10, and the first connector 30 and the second connector 40 are used to connect to an external coolant supply device to circulate coolant to the liquid cooling plate 10.

[0056] For details, please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of the liquid cooling plate 10 provided in this embodiment. Figure 7 This is a partial structural schematic diagram of the liquid cooling plate 10 provided in this embodiment, combined with... Figures 4-7 The flow channel section 11 and the energy absorption section 12 are spaced apart, and a first mounting groove 13 is formed between the flow channel section 11, the energy absorption section 12 and the side of the liquid cooling plate 10. The first thermal pad 20 is disposed in the first mounting groove 13. The flow channel section 11 has a liquid cooling flow channel 111, and the energy absorption section 12 has an energy absorption cavity 121 and an exhaust hole 122. The energy absorption cavity 121 and the exhaust hole 122 are connected. The first connector 30 and the second connector 40 are both inserted through the liquid cooling plate 10 and are located at both ends of the flow channel section 11, respectively. The first connector 30 and the second connector 40 are both connected to the liquid cooling flow channel 111.

[0057] In other words, the coolant enters the liquid cooling channel 111 from one of the first connector 30 and the second connector 40, and flows out from the other, thereby conducting heat to the battery cell 1201 that is in contact with the liquid cooling plate 10. Since the energy-absorbing part 12 has an energy-absorbing cavity 121, it has a buffering effect. When the battery cell 1201 expands, it squeezes the energy-absorbing part 12, causing the gas in the energy-absorbing cavity 121 to be discharged from the exhaust port 122, thus playing an energy-absorbing buffering role. Simultaneously, by setting the first thermally conductive pad 20 in the first mounting groove 13, not only is the heat conduction effect improved, but it can also work in conjunction with the energy-absorbing part 12 to play an energy-absorbing buffering role for the battery cell 1201. This solves the problem of deformation and displacement of the liquid cooling plate 10 caused by the expansion force of the battery cell 1201, and improves the sealing and thermal conductivity of the liquid cooling plate 10.

[0058] It should be noted that the liquid cooling plate 10 can be formed by stamping, that is, both the flow channel portion 11 and the energy absorption portion 12 are structures that protrude from opposite sides of the liquid cooling plate 10. It can be understood that there are two flow channel portions 11 and two energy absorption portions 12, and there are also two corresponding first thermal pads 20, so that two adjacent battery packs 120 can be attached to each other, thereby improving the heat conduction effect.

[0059] In addition, it should be noted that the number of exhaust holes 122 can be set to multiple, and the multiple exhaust holes 122 are arranged at intervals, thereby improving the exhaust effect of the energy absorption chamber 121, and thus improving the buffering energy absorption effect of the energy absorption part 12.

[0060] Please combine Figures 3-5 In this embodiment, multiple liquid cooling plates 10 are spaced apart, and a battery installation space 200 is formed between two adjacent liquid cooling plates 10; two adjacent first connectors 30 are connected, and two adjacent second connectors 40 are connected.

[0061] Since multiple liquid cooling components 100 are connected sequentially, in order to further improve the overall sealing and thermal conductivity of the liquid cooling system 110, in this embodiment, multiple first connectors 30 are spaced apart, and multiple second connectors 40 are spaced apart; the liquid cooling system 110 also includes multiple first flexible connecting pipes 300 and multiple second flexible connecting pipes 400, with each end of the first flexible connecting pipe 300 connected to two adjacent first connectors 30, and each end of the second flexible connecting pipe 400 connected to two adjacent second connectors 40.

[0062] As is easily understood, both the first flexible connecting tube 300 and the second flexible connecting tube 400 are flexible, that is, they have a buffering effect, which can absorb the periodic deformation displacement caused by the expansion force generated by the charging and discharging of multiple battery packs 120, thereby ensuring the connection stability between multiple liquid cooling components 100 and improving the overall sealing and thermal conductivity of the liquid cooling system 110.

[0063] Please continue to combine Figures 4-7 In order to further improve the buffering energy absorption and heat conduction effect, in this embodiment, the energy absorption part 12 is provided with a second mounting groove 14, and the liquid cooling assembly 100 also includes a second heat conduction pad 50, which is disposed in the second mounting groove 14.

[0064] It should be noted that the number of the second mounting slot 14 and the second thermal pad 50 can be set to multiple, with multiple second mounting slots 14 and multiple second thermal pads 50 arranged in a one-to-one correspondence, so as to achieve buffering and heat conduction in different parts of the liquid cooling plate 10.

[0065] Specifically, the flow channel 11 includes a first flow channel 112 and a second flow channel 113. The first flow channel 112 and the second flow channel 113 are connected end to end and form an annular structure. The first flow channel 112 has a first liquid cooling flow channel 1211, and the second flow channel 113 has a second liquid cooling flow channel 1131. The first liquid cooling flow channel 1211 and the second liquid cooling flow channel 1131 are connected end to end to form the liquid cooling flow channel 111. The energy absorption part 12 is located between the first flow channel 112 and the second flow channel 113.

[0066] It is understandable that the first thermal pad 20 is also a ring-shaped thermal pad. By setting it in a ring shape and placing the energy-absorbing part 12 inside the ring structure, the first thermal pad 20 and the energy-absorbing part 12 can work together better to improve the buffering and energy absorption effect and enhance the sealing and thermal conductivity of the liquid cooling plate 10.

[0067] It should be noted that in this embodiment, both the first flow channel 112 and the second flow channel 113 are serpentine or wavy structures, which can better adhere to the battery cell 1201 for heat conduction. Additionally, the number of the first flow channel 112 and the second flow channel 113 can be adjusted according to actual conditions to achieve a uniform flow of coolant, thereby improving thermal conductivity.

[0068] To further improve the heat conduction and energy absorption effect, the liquid cooling assembly 100 also includes a third thermal pad 60, which is snapped onto one end of the liquid cooling plate 10 and located on the side of the first flow channel 112 away from the energy absorption section 12.

[0069] Similarly, in order to further improve the heat conduction and buffer energy absorption effect, the liquid cooling assembly 100 also includes a fourth thermal pad 70, which is snapped onto one end of the liquid cooling plate 10 and located on the side of the second flow channel 113 away from the energy absorption section 12.

[0070] Please combine Figures 5-7 The flow channel section 11 has a first flow channel hole 114 and a second flow channel hole 115 at its two ends, respectively, and both the first flow channel hole 114 and the second flow channel hole 115 are connected to the liquid cooling flow channel 111. The first connector 30 includes a first sub-connector 31 and a second sub-connector 32. The first sub-connector 31 is disposed on one side of the first flow channel hole 114, and the second sub-connector 32 is disposed on the other side of the first flow channel hole 114, and both the first sub-connector 31 and the second sub-connector 32 are connected to the first flow channel hole 114.

[0071] Similarly, the second connector 40 includes a third sub-connector 41 and a fourth sub-connector 42. The third sub-connector 41 is located on one side of the second flow channel hole 115, and the fourth sub-connector 42 is located on the other side of the second flow channel hole 115. Both the third sub-connector 41 and the fourth sub-connector 42 are connected to the second flow channel hole 115.

[0072] By providing the first flow channel hole 114 and the second flow channel hole 115, the first connector 30 and the second connector 40 can be easily installed. Furthermore, since the liquid cooling plate 10 can be integrally formed by stamping, that is, in some embodiments, the liquid cooling plate 10 can be obtained by stamping two identical plate-shaped structures and then welding them together, resulting in symmetrical arrangement of the two energy-absorbing portions 12 and the two flow channel portions 11 in the formed liquid cooling plate 10. Next, the first sub-connector 31 and the second sub-connector 32 can be brazed onto the two stamped plate-shaped structures respectively; similarly, the third sub-connector 41 and the fourth sub-connector 42 can also be brazed onto the two stamped plate-shaped structures respectively. This simplifies the overall structure of the liquid cooling assembly 100, improves production efficiency, and reduces costs.

[0073] Further, please refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of the structure of the first sub-connector 31 and the third sub-connector 41 provided in this embodiment. Figure 9 This is a schematic diagram of the structure of the second sub-connector 32 and the fourth sub-connector 42 provided in this embodiment, combined with... Figure 6 , Figure 8 and Figure 9 In this embodiment, the first sub-connector 31 has a first flow-limiting notch 311 at one end near the first flow channel hole 114, the second sub-connector 32 has a second flow-limiting notch 321 at one end near the first flow channel hole 114, the third sub-connector 41 has a third flow-limiting notch 411 at one end near the second flow channel hole 115, and the fourth sub-connector 42 has a fourth flow-limiting notch 421 at one end near the second flow channel hole 115.

[0074] As is easy to understand, the flow-limiting notch can limit the flow of coolant into the liquid cooling channel 111 of the liquid cooling plate 10. Specifically, this can be achieved by adjusting the size of the notch, thereby better controlling the flow rate or flow of coolant flowing into different liquid cooling plates 10, so as to better achieve the effect of uniform flow and heat conduction.

[0075] It should be noted that the number of current-limiting gaps can also be adjusted to better achieve the functions of current limiting, current equalization, or heat conduction. For example, in this embodiment, the number of the first current-limiting gap 311, the second current-limiting gap 321, the third current-limiting gap 411, and the fourth current-limiting gap 421 are all four. Of course, in other embodiments, the number of the above-mentioned current-limiting gaps can also be different; for example, the number can be one, two, three, or five, etc.

[0076] In summary, the embodiments of this utility model provide a liquid cooling component 100, a liquid cooling system 110, a battery pack 1100, and a new energy vehicle 1000. The liquid cooling component 100 includes a liquid cooling plate 10, a first thermal pad 20, a first connector 30, and a second connector 40. The liquid cooling plate 10 has a flow channel 11 and an energy absorption section 12 on opposite sides. The flow channel 11 and the energy absorption section 12 are spaced apart, and a first mounting groove 13 is formed between the flow channel 11, the energy absorption section 12, and the side of the liquid cooling plate 10. The first thermal pad 20 is disposed in the first mounting groove 13. The flow channel 11 has a liquid-cooled flow channel 111, and the energy absorption section 12 has an energy absorption cavity 121 and an exhaust port 122. The energy absorption cavity 121 and the exhaust port 122 are connected. The first connector 30 and the second connector 40 are both inserted through the liquid-cooled plate 10 and are located at both ends of the flow channel 11. The first connector 30 and the second connector 40 are both connected to the liquid-cooled flow channel 111.

[0077] As is easily understood, the coolant enters the liquid cooling channel 111 from one of the first connector 30 and the second connector 40, and flows out from the other, thereby conducting heat to the battery cell 1201 that is in contact with the liquid cooling plate 10. Since the energy-absorbing part 12 has an energy-absorbing cavity 121, it has a buffering effect. When the battery cell 1201 expands, it squeezes the energy-absorbing part 12, causing the gas in the energy-absorbing cavity 121 to be discharged from the exhaust port 122, thus playing an energy-absorbing buffering role. Simultaneously, by setting the first thermally conductive pad 20 in the first mounting groove 13, not only is the heat conduction effect improved, but it also works in conjunction with the energy-absorbing part 12 to buffer the energy absorption of the battery cell 1201, thereby solving the problem of deformation and displacement of the liquid cooling plate 10 caused by the expansion force of the battery cell 1201, and improving the sealing and thermal conductivity of the liquid cooling plate 10.

[0078] The liquid cooling system 110 includes a liquid cooling component 100, which has all the functions and benefits of the liquid cooling component 100.

[0079] The battery pack 1100 includes a liquid cooling system 110, which has all the functions and benefits of the liquid cooling system 110.

[0080] The new energy vehicle 1000 includes a battery pack 1100, which has all the functions and benefits of the battery pack 1100.

[0081] The above description is merely a specific embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid cooling assembly, characterized in that, include: A liquid cooling plate (10) is provided with a flow channel (11) and an energy absorption section (12) on opposite sides. The flow channel (11) and the energy absorption section (12) are spaced apart, and a first mounting groove (13) is formed between the flow channel (11), the energy absorption section (12) and the side of the liquid cooling plate (10). The flow channel (11) has a liquid cooling flow channel (111), and the energy absorption section (12) has an energy absorption cavity (121) and an exhaust hole (122). The energy absorption cavity (121) and the exhaust hole (122) are connected. The first thermal pad (20) is disposed in the first mounting groove (13); The first connector (30) and the second connector (40) are both inserted through the liquid cooling plate (10) and are located at both ends of the flow channel (11). The first connector (30) and the second connector (40) are both connected to the liquid cooling flow channel (111).

2. The liquid cooling assembly according to claim 1, characterized in that, The energy-absorbing part (12) is provided with a second mounting groove (14), and the liquid cooling assembly (100) further includes a second thermal pad (50), which is disposed in the second mounting groove (14).

3. The liquid cooling assembly according to claim 1, characterized in that, The flow channel section (11) includes a first flow channel section (112) and a second flow channel section (113). The first flow channel section (112) and the second flow channel section (113) are connected end to end and form an annular structure. The first flow channel section (112) has a first liquid cooling flow channel (1211), and the second flow channel section (113) has a second liquid cooling flow channel (1131). The first liquid cooling flow channel (1211) and the second liquid cooling flow channel (1131) are connected end to end to form the liquid cooling flow channel (111). The energy-absorbing part (12) is located between the first flow channel part (112) and the second flow channel part (113).

4. The liquid cooling assembly according to claim 3, characterized in that, The liquid cooling assembly (100) further includes a third thermal pad (60), which is snapped onto one end of the liquid cooling plate (10) and located on the side of the first flow channel (112) away from the energy absorption section (12); and / or, The liquid cooling assembly (100) further includes a fourth thermal pad (70), which is snapped onto one end of the liquid cooling plate (10) and located on the side of the second flow channel (113) away from the energy absorption section (12).

5. The liquid cooling assembly according to claim 1, characterized in that, The flow channel section (11) has a first flow channel hole (114) and a second flow channel hole (115) at both ends, and the first flow channel hole (114) and the second flow channel hole (115) are connected to the liquid cooling flow channel (111). The first connector (30) includes a first sub-connector (31) and a second sub-connector (32). The first sub-connector (31) is disposed on one side of the first flow channel hole (114), and the second sub-connector (32) is disposed on the other side of the first flow channel hole (114). Both the first sub-connector (31) and the second sub-connector (32) are connected to the first flow channel hole (114). The second connector (40) includes a third sub-connector (41) and a fourth sub-connector (42). The third sub-connector (41) is disposed on one side of the second flow channel hole (115), and the fourth sub-connector (42) is disposed on the other side of the second flow channel hole (115). Both the third sub-connector (41) and the fourth sub-connector (42) are connected to the second flow channel hole (115).

6. The liquid cooling assembly according to claim 5, characterized in that, The first sub-connector (31) has a first flow-limiting notch (311) at one end near the first flow channel hole (114); and / or, The second sub-connector (32) has a second flow-limiting notch (321) at one end near the first flow channel hole (114); and / or, The third sub-connector (41) has a third flow-limiting notch (411) at one end near the second flow channel hole (115); and / or, The fourth sub-connector (42) has a fourth flow-limiting notch (421) at one end near the second flow channel hole (115).

7. A liquid cooling system, characterized in that, It includes a plurality of liquid cooling components (100) as described in any one of claims 1-6, wherein a plurality of liquid cooling plates (10) are spaced apart and a battery mounting space (200) is formed between two adjacent liquid cooling plates (10); two adjacent first connectors (30) are connected and two adjacent second connectors (40) are connected.

8. The liquid cooling system according to claim 7, characterized in that, Multiple first connectors (30) are spaced apart, and multiple second connectors (40) are spaced apart; the liquid cooling system (110) also includes multiple first flexible connecting pipes (300) and multiple second flexible connecting pipes (400), with each end of the first flexible connecting pipe (300) connected to two adjacent first connectors (30), and each end of the second flexible connecting pipe (400) connected to two adjacent second connectors (40).

9. A battery pack, characterized in that, It includes multiple battery packs (120) and a liquid cooling system (110) as described in claim 7 or 8, wherein the multiple battery packs (120) are respectively disposed in multiple battery mounting spaces (200).

10. A new energy vehicle, characterized in that, Includes the battery pack (1100) as described in claim 9.

Images