Liquid cooling structure, battery pack and vehicle
Patent Information
- Application Number
- CN202522261495.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-10-24
AI Technical Summary
通过在液冷主体上设置不同进出方向的两条流道，实现进口低温冷却液与出口高温冷却液的温度补偿，解决了大容量电池包的温度不均匀的问题，有效提高电池包的换热效率
[0028]第一区域内部循环后的冷却液汇流至第二区域，经由第二区域内部循环后的冷却液流出至第二出口。
Smart Images
Figure CN224817186U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and more particularly to a liquid cooling structure, a battery pack, and a vehicle. Background Technology
[0002] With technological advancements and increasing demand for renewable energy, battery packs are widely used in various fields, including electric vehicles, renewable energy storage, consumer electronics, and industrial equipment. As power density continues to increase, thermal management directly impacts the safety, lifespan, and overall performance of battery packs. Overheating can lead to performance degradation, reduced reliability, and even damage to the battery pack.
[0003] To meet the requirements of battery packs, liquid cooling is typically used. This includes a liquid cooling structure, into which coolant is injected to maintain normal operation and extend the battery pack's lifespan.
[0004] However, in existing battery packs, as the driving range of electric vehicles continues to increase, the battery capacity of the packs is also constantly increasing. Even with continuous improvements in energy retention and the use of cooling methods with higher heat exchange efficiency, the size of the battery packs is becoming increasingly larger. The increased size of high-capacity battery packs presents challenges. On the one hand, it requires controlling the high temperature of the cells to meet the requirements of high-rate fast charging performance. On the other hand, temperature inhomogeneity can affect the consistency of the battery pack, thereby impacting battery life and performance. Utility Model Content
[0005] This application provides a liquid cooling structure, a battery pack, and a vehicle. By setting two flow channels with different inlet and outlet directions on the liquid cooling body, temperature compensation between the inlet low-temperature coolant and the outlet high-temperature coolant is achieved, solving the problem of uneven temperature in large-capacity battery packs and effectively improving the heat exchange efficiency of the battery pack.
[0006] The first aspect of this application provides a liquid cooling structure, including:
[0007] The liquid cooling body has a first flow channel and a second flow channel.
[0008] The first flow channel has a first inlet and a first outlet;
[0009] The second flow channel has a second inlet and a second outlet;
[0010] The flow paths of the first and second flow channels intersect and cover each battery module;
[0011] The first inlet of the first flow channel and the second outlet of the second flow channel are arranged adjacent to each other, and the first outlet of the first flow channel and the second inlet of the second flow channel are arranged adjacent to each other, so as to achieve temperature compensation through the cross flow of low temperature coolant and high temperature coolant.
[0012] The liquid cooling structure provided in the first aspect of this application includes a liquid cooling body. The liquid cooling body has a first flow channel and a second flow channel. The first flow channel has a first inlet and a first outlet, and the second flow channel has a second inlet and a second outlet. The flow paths of the first and second flow channels intersect and cover each battery module. The first inlet of the first flow channel and the second outlet of the second flow channel are arranged adjacent to each other, and the first outlet of the first flow channel and the second inlet of the second flow channel are arranged adjacent to each other, so as to achieve temperature compensation through the cross-flow of low-temperature coolant and high-temperature coolant. Thus, the liquid cooling structure provided in this application, by setting two flow channels with different inlet and outlet directions on the liquid cooling body, achieves temperature compensation between the inlet low-temperature coolant and the outlet high-temperature coolant, solving the problem of uneven temperature in large-capacity battery packs and effectively improving the heat exchange efficiency of the battery pack.
[0013] In one possible implementation, the first flow channel and the second flow channel are set independently of each other.
[0014] In one possible implementation, the flow directions of the first and second flow channels are opposite.
[0015] In one possible implementation, the liquid cooling body further includes a first region, a second region, a third region, and a fourth region, each region corresponding to a battery module;
[0016] The first inlet of the first flow channel is located in the first region, and the first outlet is located in the third region;
[0017] The second inlet of the second flow channel is located in the third region, and the second outlet is located in the first region;
[0018] The low-temperature region of the first flow channel corresponds to the high-temperature region of the second flow channel, and the high-temperature region of the first flow channel corresponds to the low-temperature region of the second flow channel, thus forming temperature compensation.
[0019] In one possible implementation, the first flow channel includes a first main loop and a plurality of first branches;
[0020] The coolant enters through the first inlet, flows through the first main circuit, and splits into at least two first branches, with the flow path of at least one first branch covering one or more battery modules.
[0021] In one possible implementation, after the coolant flowing through the first main circuit passes the periphery of the first and second regions, a first portion of the coolant is diverted into the internal circulation of the first, third, and fourth regions.
[0022] The second part of the coolant is diverted into the second zone for internal circulation, flows out of the second zone and flows into the third zone, where it merges with the coolant diverted to the third zone and flows into the fourth zone.
[0023] The coolant from all the branch coolants converges in the fourth zone. Part of it enters the internal circulation of the fourth zone and flows out through the first outlet, while the other part flows out through the periphery of the third zone to the first outlet.
[0024] In one possible implementation, the second flow channel includes a second main loop and a plurality of second branches;
[0025] The coolant enters through the second inlet, flows through the second main circuit, and splits into at least two second branches, with the flow path of at least one second branch covering one or more battery modules.
[0026] In one possible implementation, after the coolant flowing through the second main circuit passes the periphery of the third and fourth regions, a first portion of the coolant is diverted into the third and fourth regions.
[0027] The coolant circulating in the fourth zone flows into the third zone, and the coolant from the third and fourth zones flows into the first and second zones together.
[0028] The coolant that circulates within the first zone flows into the second zone, and then flows out through the second outlet.
[0029] A second aspect of this application provides a battery pack, including a battery module and the liquid cooling structure described above;
[0030] The battery module is in contact with the liquid cooling structure.
[0031] A third aspect of this application provides a vehicle including the battery pack described above.
[0032] It should be understood that the second and third aspects of this application correspond to the technical solutions of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here.
[0033] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the liquid cooling structure, battery pack, and vehicle provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description
[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only a part of the embodiments of this application. These drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0035] Figure 1 This is a schematic diagram of the liquid cooling structure provided in the embodiments of this application;
[0036] Figure 2 This is a schematic diagram of a liquid cooling structure with different regions provided in the embodiments of this application;
[0037] Figure 3 This is a top view of a portion of the battery pack structure provided in an embodiment of this application;
[0038] Figure 4 This is a schematic diagram of the battery pack provided in an embodiment of this application.
[0039] Explanation of reference numerals in the attached figures:
[0040] 100-Liquid-cooled structure;
[0041] 200 - Liquid cooling main body; 210 - First zone; 220 - Second zone; 230 - Third zone; 240 - Fourth zone;
[0042] 300 - First flow channel; 310 - First inlet; 320 - First outlet; 330 - First main circuit; 340 - First branch circuit;
[0043] 400 - Second flow channel; 410 - Second inlet; 420 - Second outlet; 430 - Second main circuit; 440 - Second branch circuit;
[0044] 500-battery pack;
[0045] 600 - Battery module; 610 - First battery module; 620 - Second battery module; 630 - Third battery module; 640 - Fourth battery module;
[0046] 700-Battery housing. Detailed Implementation
[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0048] As described in the background section, in existing battery packs, the battery capacity is constantly increasing due to the increasing range of electric vehicles. Even with continuous improvements in energy retention and the use of cooling methods with higher heat exchange efficiency, the size of the battery pack is becoming increasingly larger. The increased size of high-capacity battery packs requires, on the one hand, controlling the high temperature of the cells to meet high-rate fast charging performance; on the other hand, temperature inhomogeneity affects the consistency of the battery pack, thereby impacting battery life and performance.
[0049] To address the aforementioned technical problems, the first aspect of this application provides a liquid cooling structure. This liquid cooling structure includes a liquid cooling body. The liquid cooling body has a first flow channel and a second flow channel. The first flow channel has a first inlet and a first outlet, and the second flow channel has a second inlet and a second outlet. The flow paths of the first and second flow channels intersect and cover each battery module. The first inlet of the first flow channel and the second outlet of the second flow channel are adjacent to each other, and the first outlet of the first flow channel and the second inlet of the second flow channel are adjacent to each other, so as to achieve temperature compensation through the cross-flow of low-temperature coolant and high-temperature coolant. Thus, the liquid cooling structure provided by this application, by setting two flow channels with different inlet and outlet directions on the liquid cooling body, achieves temperature compensation between the inlet low-temperature coolant and the outlet high-temperature coolant, solving the problem of uneven temperature in large-capacity battery packs and effectively improving the heat exchange efficiency of the battery pack.
[0050] A second aspect of this application provides a battery pack. The battery pack includes a battery module and the aforementioned liquid cooling structure. The battery module is in contact with the liquid cooling structure.
[0051] A third aspect of this application provides a vehicle that includes the battery pack described above.
[0052] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0053] This application provides a liquid cooling structure, a battery pack, and a vehicle. By setting two flow channels with different inlet and outlet directions on the liquid cooling body, temperature compensation between the inlet low-temperature coolant and the outlet high-temperature coolant is achieved, solving the problem of uneven temperature in large-capacity battery packs and effectively improving the heat exchange efficiency of the battery pack. The specific structures of the liquid cooling structure, battery pack, and vehicle provided in this application embodiment are described below with reference to the accompanying drawings.
[0054] refer to Figure 1 This application provides a liquid cooling structure 100 in a first aspect. The liquid cooling structure 100 may include a liquid cooling body 200. In one possible implementation, the liquid cooling body 200 may be rectangular; however, this application does not limit the shape of the liquid cooling body 200. In this application embodiment, the liquid cooling body 200 may have a first flow channel 300 and a second flow channel 400. Coolant can flow in the first flow channel 300 and the second flow channel 400, thereby allowing the liquid cooling body 200 to dissipate heat from the battery module 600.
[0055] Continue to refer to Figure 1 Based on the above embodiments, the first flow channel 300 has a first inlet 310 and a first outlet 320, and the second flow channel 400 has a second inlet 410 and a second outlet 420. In this embodiment, the flow paths of the first flow channel 300 and the second flow channel 400 can cross and cover each battery module 600, thereby dissipating heat from all battery modules 600. In one possible implementation, the first inlet 310 of the first flow channel 300 can be arranged adjacent to the second outlet 420 of the second flow channel 400, and the first outlet 320 of the first flow channel 300 can be arranged adjacent to the second inlet 410 of the second flow channel 400, thereby achieving temperature compensation through the cross-flow of the low-temperature coolant at the inlet and the high-temperature coolant at the outlet.
[0056] Thus, the liquid cooling structure 100 provided in this application embodiment achieves temperature compensation between the inlet low-temperature coolant and the outlet high-temperature coolant by setting two flow channels with different inlet and outlet directions on the liquid cooling body 200, which solves the problem of uneven temperature of the large-capacity battery pack 500 and effectively improves the heat exchange efficiency of the battery pack 500.
[0057] Continue to refer to Figure 1 Based on the above embodiments, the first flow channel 300 and the second flow channel 400 are independently configured. In one possible implementation, the first flow channel 300 may be located outside the second flow channel 400; this embodiment is not limited thereto. It is understood that by setting two independent flow channels, they can be controlled separately, thereby enabling a more reasonable flow distribution strategy and effectively reducing energy consumption.
[0058] Continue to refer to Figure 1 Based on the above embodiments, the flow directions of the first flow channel 300 and the second flow channel 400 are opposite. This allows for temperature compensation between the low-temperature region of the first flow channel 300 and the high-temperature region of the second flow channel 400. Correspondingly, temperature compensation can also be achieved between the high-temperature region of the first flow channel 300 and the low-temperature region of the second flow channel 400. In this way, the high and low temperature regions compensate for each other, effectively reducing the temperature difference of the battery pack 500 and maximizing the efficient heat exchange function of the liquid cooling structure 100.
[0059] refer to Figure 2 Based on the above embodiments, the liquid cooling body 200 may further include a first region 210, a second region 220, a third region 230, and a fourth region 240. Each region may correspond to a specific battery module 600. In one possible implementation, the first inlet 310 of the first flow channel 300 may be located in the first region 210, and the first outlet 320 may be located in the third region 230. Correspondingly, the second inlet 410 of the second flow channel 400 may be located in the third region 230, and the second outlet 420 may be located in the first region 210. It is understood that the flow paths of both the first flow channel 300 and the second flow channel 400 can cover the first region 210, the second region 220, the third region 230, and the fourth region 240, thereby dissipating heat from each battery module 600.
[0060] Continue to refer to Figure 2 Based on the above embodiments, the low-temperature region of the first flow channel 300 corresponds to the high-temperature region of the second flow channel 400, and the high-temperature region of the first flow channel 300 corresponds to the low-temperature region of the second flow channel 400, thus forming temperature compensation. It can be understood that the mutual compensation between the high and low temperature regions can effectively reduce the temperature difference of the battery pack 500 and improve heat dissipation efficiency.
[0061] Continue to refer to Figure 2 Based on the above embodiments, the first flow channel 300 may further include a first main loop 330 and a first branch 340. In one possible implementation, the number of first branch 340s may be several, and this application embodiment does not impose a limitation. In this application embodiment, the first main loop 330 may be located at the outer peripheral edge of the liquid cooling body 200, and the first branch 340 may be located inside the first main loop 330. The flow path of the first branch 340 can cover the first region 210, the second region 220, the third region 230, and the fourth region 240, thereby enabling the coolant flowing through the first branch 340 to achieve internal circulation in the first region 210, the second region 220, the third region 230, and the fourth region 240 respectively.
[0062] Understandably, the coolant can enter through the first inlet 310, flow through the first main circuit 330, and then split into at least two first branches 340. The flow path of at least one first branch 340 can cover one or more battery modules 600.
[0063] Continue to refer to Figure 2 Based on the above embodiment, the coolant flowing through the first main circuit 330 is divided after passing around the first region 210 and the second region 220. The first portion of coolant can be divided into three parts, which then enter the first region 210, the third region 230, and the fourth region 240 respectively to achieve internal circulation, thereby dissipating heat from the battery modules 600 corresponding to the first region 210, the third region 230, and the fourth region 240.
[0064] Continue to refer to Figure 2 Based on the above embodiment, the coolant in the second part is diverted and enters the second region 220 to achieve internal circulation, thereby dissipating heat from the battery module 600 corresponding to the second region 220. After flowing out of the second region 220, this part of the coolant flows into the third region 230 and merges with the coolant diverted to the third region 230 into the fourth region 240.
[0065] Continue to refer to Figure 2 Based on the above embodiment, after the coolant from all the first branch channels 340 converges in the fourth region 240, a portion of the coolant enters the fourth region 240 to achieve internal circulation and then flows out of the first outlet 320, while the other portion of the coolant flows out along the periphery of the fourth region 240 and the third region 230 to the first outlet 320. In this way, the coolant in the first flow channel 300 completes circulation.
[0066] Continue to refer to Figure 2 Based on the above embodiments, the second flow channel 400 may further include a second main loop 430 and a second branch loop 440. In one possible implementation, the number of second branch loops 440 can be several, and this application embodiment does not limit the number. In this application embodiment, the second main loop 430 may also be located at the outer peripheral edge of the liquid cooling body 200, and the second main loop 430 is located inside the first main loop 330. The second branch loop 440 may be located inside the second main loop 430, and the flow path of the second branch loop 440 can cover the first region 210, the second region 220, the third region 230, and the fourth region 240, thereby enabling the coolant flowing through the second branch loop 440 to achieve internal circulation in the first region 210, the second region 220, the third region 230, and the fourth region 240 respectively.
[0067] Understandably, the coolant can enter through the second inlet 410, flow through the second main circuit 430, and then branch into at least two second branches 440. The flow path of at least one second branch 440 can cover one or more battery modules 600.
[0068] Continue to refer to Figure 2 Based on the above embodiment, the coolant flowing through the second main circuit 430 is split after passing around the third region 230 and the fourth region 240. Specifically, the first portion of coolant can be split into two parts, which then enter the third region 230 and the fourth region 240 respectively to achieve internal circulation, thereby dissipating heat from the battery modules 600 corresponding to the third region 230 and the fourth region 240.
[0069] Continue to refer to Figure 2 Based on the above embodiment, the coolant circulates within the fourth region 240 and then flows into the third region 230. In this way, the coolant flowing into the third region 230 and the fourth region 240 can flow together into the first region 210 and the second region 220.
[0070] Continue to refer to Figure 2 Based on the above embodiment, the coolant that has circulated within the first region 210 flows into the second region 220, and then flows out to the second outlet 420 via the second region 220. In this way, the coolant in the second flow channel 400 completes its circulation.
[0071] In this embodiment, at least a portion of the coolant flowing through the first flow channel 300 passes entirely around the periphery of the first region 210, the second region 220, the third region 230, and the fourth region 240, thereby significantly balancing the overall temperature of the battery pack 500. Furthermore, the coolant entering the first flow channel 300 preferentially enters the second region 220, making the second region 220 a low-temperature region of the first flow channel 300. Conversely, the coolant returning from the second flow channel 400 ultimately enters the second region 220, making the second region 220 a high-temperature region of the second flow channel 400. This achieves temperature compensation between the low-temperature region of the first flow channel 300 and the high-temperature region of the second flow channel 400. Correspondingly, the coolant entering the second flow channel 400 preferentially enters the fourth region 240, making the fourth region 240 a low-temperature region of the second flow channel 400. Conversely, the coolant returning from the first flow channel 300 ultimately enters the fourth region 240, making the fourth region 240 a high-temperature region of the first flow channel 300. This allows for temperature compensation between the high-temperature region of the first flow channel 300 and the low-temperature region of the second flow channel 400. Through mutual compensation between the high and low temperature regions, the temperature difference of the battery pack 500 is effectively reduced, achieving efficient heat exchange.
[0072] refer to Figure 3 as well as Figure 4 This application provides a battery pack 500 in a second aspect. The battery pack 500 may include battery modules 600 and the aforementioned liquid cooling structure 100. In one possible implementation, the number of battery modules 600 can be plurality of, and this application embodiment does not limit the number of battery modules 600. In this application embodiment, plurality of battery modules 600 can be stacked in the battery pack 500, and the battery modules 600 can be in contact with the liquid cooling structure 100, thereby allowing the liquid cooling structure 100 to dissipate heat from the battery modules 600.
[0073] Continue to refer to Figure 3 Based on the above embodiments, in one possible implementation, the battery module 600 may further include a first battery module 610, a second battery module 620, a third battery module 630, and a fourth battery module 640. In this embodiment, the first battery module 610 may be correspondingly configured with the first region 210 in the liquid cooling structure 100, the second battery module 620 may be correspondingly configured with the second region 220 in the liquid cooling structure 100, the third battery module 630 may be correspondingly configured with the third region 230 in the liquid cooling structure 100, and the fourth battery module 640 may be correspondingly configured with the fourth region 240 in the liquid cooling structure 100. Thus, the first flow channel 300 and the second flow channel 400 in the liquid cooling structure 100 cooperate to dissipate heat from the first battery module 610, the second battery module 620, the third battery module 630, and the fourth battery module 640.
[0074] Continue to refer to Figure 4 Based on the above embodiments, the battery pack 500 may further include a battery housing 700. Each battery module 600 can be located within the battery housing 700, allowing the battery housing 700 to support the battery modules 600 and provide some protection.
[0075] This application provides a vehicle (not shown in the figures) in a third aspect. The vehicle may include the battery pack 500 described above.
[0076] In this embodiment of the application, the liquid cooling structure 100 provided in this embodiment of the application solves the problem of uneven temperature of the large-capacity battery pack 500 by setting two flow channels with different inlet and outlet directions on the liquid cooling body 200, thereby effectively improving the heat exchange efficiency of the battery pack 500.
[0077] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
[0078] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0079] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0080] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0081] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0082] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A liquid-cooled structure, characterized in that, include: A liquid cooling body (200) is provided with a first flow channel (300) and a second flow channel (400). The first flow channel (300) has a first inlet (310) and a first outlet (320); The second flow channel (400) has a second inlet (410) and a second outlet (420); The flow paths of the first flow channel (300) and the second flow channel (400) intersect and cover each battery module (600). The first inlet (310) of the first flow channel (300) is arranged adjacent to the second outlet (420) of the second flow channel (400), and the first outlet (320) of the first flow channel (300) is arranged adjacent to the second inlet (410) of the second flow channel (400) to achieve temperature compensation through the cross flow of low temperature coolant and high temperature coolant.
2. The liquid cooling structure according to claim 1, characterized in that, The first flow channel (300) and the second flow channel (400) are set independently of each other.
3. The liquid cooling structure according to claim 2, characterized in that, The flow directions of the first flow channel (300) and the second flow channel (400) are opposite.
4. The liquid-cooled structure according to any one of claims 1-3, characterized in that, The liquid cooling body (200) also includes a first region (210), a second region (220), a third region (230) and a fourth region (240), each region corresponding to a battery module (600); The first inlet (310) of the first flow channel (300) is located in the first region (210), and the first outlet (320) is located in the third region (230). The second inlet (410) of the second flow channel (400) is located in the third region (230), and the second outlet (420) is located in the first region (210). The low-temperature region of the first flow channel (300) corresponds to the high-temperature region of the second flow channel (400), and the high-temperature region of the first flow channel (300) corresponds to the low-temperature region of the second flow channel (400), thus forming temperature compensation.
5. The liquid-cooled structure according to claim 4, characterized in that, The first flow channel (300) includes a first main loop (330) and a plurality of first branch loops (340); Coolant enters along the first inlet (310), flows through the first main circuit (330), and splits into at least two first branches (340), with the flow path of at least one first branch (340) covering one or more battery modules (600).
6. The liquid-cooled structure according to claim 5, characterized in that, After the coolant flowing through the first main circuit (330) passes the periphery of the first region (210) and the second region (220), a first portion of the coolant is diverted into the first region (210), the third region (230) and the fourth region (240) for internal circulation; The second portion of the coolant is diverted into the second region (220) for internal circulation, flows out of the second region (220) and flows into the third region (230), and merges with the coolant diverted to the third region (230) into the fourth region (240). The coolant from all branches converges in the fourth region (240), with a portion circulating inside the fourth region (240) and then flowing out through the first outlet (320), while the other portion flows out through the periphery of the third region (230) to the first outlet (320).
7. The liquid-cooled structure according to claim 4, characterized in that, The second flow channel (400) includes a second main loop (430) and a plurality of second branches (440). Coolant enters along the second inlet (410), flows through the second main circuit (430), and splits into at least two second branches (440), with the flow path of at least one second branch (440) covering one or more battery modules (600).
8. The liquid-cooled structure according to claim 7, characterized in that, After the coolant flowing through the second main circuit (430) passes the periphery of the third region (230) and the fourth region (240), the first part of the coolant is diverted into the third region (230) and the fourth region (240). The coolant circulating inside the fourth region (240) flows into the third region (230), and the coolant flowing into the third region (230) and the fourth region (240) flows into the first region (210) and the second region (220). The coolant that circulates within the first region (210) flows into the second region (220), and the coolant that circulates within the second region (220) flows out to the second outlet (420).
9. A battery pack, characterized in that, It includes several battery modules (600) and the liquid cooling structure (100) as described in any one of claims 1-8 above. The battery module (600) and the liquid cooling structure (100) are in contact.
10. A vehicle, characterized in that, Includes the battery pack (500) as described in claim 9 above.