Battery cell structure and vehicle
The cell structure, featuring a dual-layer cooling plate and microchannel design, solves the problem of inconsistent internal temperature, enabling rapid cooling and efficient heat dissipation, thereby improving battery life and safety.
Patent Information
- Application Number
- CN202520031624.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing batteries suffer from inconsistent internal temperatures during high-current super-fast charging, resulting in large temperature differences that affect battery performance, pose safety hazards, and extend charging time.
It adopts a double-layer cooling plate structure and microchannel design, with coolant flowing around the circumference of the cell. Combined with the top cover assembly, it achieves overall cooling of the cell, increasing the heat dissipation area and efficiency.
It improves the internal temperature uniformity of the battery cell, shortens the charging time, and enhances the battery's lifespan and safety.
Smart Images
Figure CN223858224U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power battery technical field especially relates to a kind of electric core structure and vehicle. BACKGROUND
[0002] With the rapid development of new energy vehicles, new energy vehicles are widely used in commercial vehicles, and the use scenarios gradually develop from fixed-site logistics transportation to inter-city transportation and long-distance transportation. Commercial vehicles are heavy and consume a lot of electricity. To meet the required range, a larger capacity battery is needed.
[0003] However, the energy density of lithium iron phosphate batteries is limited at this stage, and the vehicle layout space and weight are greatly limited. Therefore, charging is required to meet the required range, so charging time plays a crucial role in logistics transportation efficiency and the development and application of new energy commercial vehicles. However, large current super-fast charging can cause the battery to overheat, and long-term high-temperature use can affect battery performance, and in severe cases, it can even cause safety accidents. Therefore, a liquid cooling plate or other heat dissipation structure is usually added to the electric core, module or battery pack structure. In the prior art, the battery cooling function is achieved by directly bonding the electric core or module to the liquid cooling plate. This method uses bottom liquid cooling, and the battery bottom cooling effect is good. However, the height of the electric core of the commercial vehicle is relatively high, and the temperature inside the electric core increases with the increase in height, which can easily cause a large temperature difference between the top and bottom of the electric core and poor consistency.
[0004] Therefore, there is an urgent need for an electric core structure to solve the above problems. INVENTION CONTENTS
[0005] The utility model aims to provide an electric core structure that cools quickly and consistently during large current super-fast charging.
[0006] Another object of the utility model is to provide a vehicle that shortens the charging time of the vehicle and improves the service life of the battery by setting the above-mentioned electric core structure.
[0007] To achieve this purpose, the utility model adopts the following technical solutions:
[0008] The electric core structure includes an electric core body, and further includes:
[0009] A housing is provided with an accommodating cavity with an opening, and the electric core body is placed in the accommodating cavity. The housing includes a cooling plate that surrounds the electric core body in the circumferential direction. The cooling plate is provided with two cooling plates, and the two cooling plates are spaced apart to form a cavity. A microchannel is provided in the cavity, and the liquid in the microchannel flows in the circumferential direction of the electric core body.
[0010] A top cover assembly is arranged at the opening of the accommodating cavity, and is used to connect the internal electrode of the battery body with external equipment.
[0011] Further, the micro-channel comprises a plurality of micro-channel pipes which are connected with each other and arranged closely, and the plurality of micro-channel pipes are arranged along the battery body in a direction from one end to the other end of the top cover assembly.
[0012] Further, the cooling plate is arranged in a U-shaped structure along the circumference of the battery body, one end of the U-shaped structure is provided with the top cover assembly, and the shell further comprises a sealing plate which is arranged at the end of the cooling plate away from the top cover assembly and at the opening of the U-shaped structure, so as to seal the bottom of the cooling plate and the opening, and the cooling plate and the sealing plate form the accommodating cavity.
[0013] Further, the sealing plate comprises a bottom plate and a side plate, the bottom plate is connected to the end of the cooling plate away from the top cover assembly, and the side plate is arranged perpendicularly to the bottom plate and used to seal the opening on the cooling plate.
[0014] Further, one end of the cooling plate is the liquid inflow end of the micro-channel, and the other end is the liquid outflow end of the micro-channel, the side plate is provided with a liquid inlet and a liquid outlet at two ends connected to the cooling plate respectively, the liquid inlet is communicated with the liquid inflow end of the micro-channel, and the liquid outlet is communicated with the liquid outflow end of the micro-channel.
[0015] Further, the cooling plate comprises a first plate and two second plates, the two second plates are arranged oppositely on two sides of the first plate, the opening is arranged oppositely to the first plate, and the length of the first plate is less than the length of the second plate.
[0016] Further, the top cover assembly comprises a cover body and a positive pole and a negative pole arranged at intervals, the cover body is arranged at the opening of the accommodating cavity, the positive pole and the negative pole are arranged in the cover body from the end of the cover body close to the opening of the accommodating cavity and are riveted to the cover body respectively.
[0017] Further, the positive pole is arranged at least two, and the two positive poles are arranged at intervals, the negative pole is arranged at least two, and the two negative poles are arranged at intervals.
[0018] Further, the top cover assembly further comprises an explosion-proof valve diaphragm arranged on the cover body.
[0019] A vehicle comprises a chassis and the battery structure according to any of the above solutions, and the battery structure is mounted on the chassis.
[0020] The beneficial effects of this utility model are:
[0021] This utility model provides a battery cell structure, including a battery cell body, a housing, and a top cover assembly. The housing has an open receiving cavity in which the battery cell body is placed. The housing includes two cooling plates arranged circumferentially around the battery cell body, forming a cavity with the two cooling plates spaced apart. Microchannels are disposed within the cavity, and liquid within the microchannels flows circumferentially around the battery cell body. The top cover assembly is located at the opening of the receiving cavity and is used to connect the internal electrodes of the battery cell body to an external device. In this battery cell structure, the cooling plates surround the sides of the battery cell body, directly contacting the sides of the battery cell body, achieving direct cooling of the entire battery cell body. This cooling method results in good temperature uniformity within the battery cell body during high-current super-fast charging. Furthermore, the use of microchannels for heat dissipation significantly increases the heat dissipation area, effectively improving the heat exchange efficiency of the battery cell body, thereby enhancing the cooling performance of the battery cell structure and extending its service life.
[0022] This utility model also provides a vehicle in which the charging time is shortened and the battery life is improved by setting the above-mentioned cell structure. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the battery cell structure provided in this embodiment of the utility model;
[0024] Figure 2 This is an exploded view of the battery cell structure provided in this embodiment of the utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the shell provided in an embodiment of the present utility model;
[0026] Figure 4 This is a schematic diagram of the top cover assembly structure provided in an embodiment of the present utility model.
[0027] In the picture:
[0028] 1. Shell; 11. Cooling plate; 111. First plate; 112. Second plate; 12. Sealing plate; 121. Bottom plate; 122. Side plate; 1221. Liquid inlet; 1222. Liquid outlet;
[0029] 2. Top cover assembly; 21. Cover body; 211. First mounting hole; 212. Second mounting hole; 213. Third mounting hole; 22. Positive terminal post; 23. Negative terminal post; 24. Positive terminal riveting block; 241. First through hole; 25. Negative terminal riveting block; 251. Second through hole; 26. First insulating pad; 27. Second insulating pad; 28. Third insulating pad; 29. Explosion-proof valve diaphragm. Detailed Implementation
[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0031] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.
[0032] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0033] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.
[0034] In the description of the utility model, it should also be explained that, unless otherwise specified and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected. For those of ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0035] In the utility model, unless otherwise expressly provided and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0036] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as a limitation of the utility model.
[0037] Embodiment one
[0038] The technical scheme of the utility model is further illustrated below by a specific embodiment. Figures 1-4
[0039] In the process of large-current super-fast charging, in order to make the temperature inside the battery cell drop fast and have good consistency, the utility model embodiment provides a battery cell structure, which comprises a battery cell body, a shell 1 and a top cover assembly 2. Wherein, the shell 1 is provided with an accommodating cavity with an opening, the battery cell body is placed in the accommodating cavity, the shell 1 comprises a cooling plate 11, the cooling plate 11 is circumferentially arranged around the battery cell body, the cooling plate 11 is provided with two, the two cooling plates 11 are arranged at intervals to form a cavity, a microchannel is arranged in the cavity, and the liquid in the microchannel flows along the circumference of the battery cell body; the top cover assembly 2 is arranged at the opening of the accommodating cavity, and the top cover assembly 2 is used for connecting the internal electrode of the battery cell body with the external equipment. In the battery cell structure, the cooling plate 11 is arranged around the side surface of the battery cell body, the cooling plate 11 directly contacts the side surface of the battery cell body, and the direct cooling of the whole battery cell body is realized. The cooling mode makes the temperature inside the battery cell body have good consistency in the process of large-current super-fast charging, and the microchannel is used for heat dissipation, which can greatly improve the heat dissipation area, effectively improve the heat exchange efficiency of the battery cell body, and further improve the cooling performance of the battery cell structure and the service life of the battery cell structure.
[0040] Further, the microchannel comprises a plurality of microchannel pipes which are in close arrangement and in communication with each other, and the plurality of microchannel pipes are arranged in the direction from one end to the other end of the battery cell body where the top cover assembly 2 is arranged. In the embodiment, the microchannel pipe is made of aluminum material, a specific flow channel scheme is designed by roll forming, and the structural design of the microchannel pipe can greatly improve the heat dissipation area.
[0041] Further, the cooling plate 11 adopts aluminum plates, the two aluminum plates are arranged with an interval to form a cavity structure, a plurality of micro-channel pipes are arranged in the cavity, and the aluminum plates are welded with the micro-channel pipes, so that the cooling plate 11 and the micro-channel pipes have small deformation, and the cooling effect is guaranteed. Moreover, the structure makes the shell 1 have a certain strength, which can effectively inhibit the expansion and deformation of the battery body during use.
[0042] Further, referring to Figure 2 , the cooling plate 11 is arranged in a U-shaped structure along the circumference of the battery body, one end of the U-shaped structure is provided with the top cover assembly 2, and the shell 1 further includes a sealing plate 12. The sealing plate 12 is arranged at the end of the cooling plate 11 away from the top cover assembly 2 and the opening of the U-shaped structure, so as to close the end of the cooling plate 11 away from the top cover assembly 2 and the opening. The cooling plate 11 and the sealing plate 12 form a containing cavity. Specifically, in the embodiment, the battery body in the battery structure is square, and correspondingly, the shell 1 is square. The cooling plate 11 is arranged in a U-shaped structure along the circumference of the battery body, that is, the cooling plate 11 has an opening at the end after being arranged along the circumference of the battery body, and the micro-channel pipes are consistent with the extension direction of the cooling plate 11. After the sealing plate 12 is connected with the cooling plate 11, the sealing plate 12 closes the end of the cooling plate 11 away from the top cover assembly 2 and the opening. The sealing plate 12 and the cooling plate 11 form a containing cavity. This arrangement facilitates the processing of the shell 1 and is conducive to the arrangement of the micro-channel structure.
[0043] The cooling plate 11 includes a first plate 111 and two second plates 112, the two second plates 112 are arranged opposite to the two sides of the first plate 111, the opening is arranged opposite to the first plate 111, and the length of the first plate 111 is less than the length of the second plate 112. The first plate 111 and the two second plates 112 are arranged around three sides of the battery body, and the micro-channel can dissipate heat from the three sides of the battery body. Moreover, the length of the two second plates 112 is greater than the length of the first plate 111, that is, the micro-channel passes through two large faces of the battery body, the contact area between the cooling liquid and the battery body is large, the heat dissipation efficiency is effectively improved, and the cooling performance of the battery structure is guaranteed. In the embodiment, the first plate 111 and the two second plates 112 are integrally formed and are formed by bending processing.
[0044] In the embodiment, the sealing plate 12 comprises a bottom plate 121 connected to the cooling plate 11 at the end away from the top cover assembly 2 and a side plate 122 arranged perpendicularly to the bottom plate 121 and used for sealing the opening on the cooling plate 11. The bottom plate 121 is welded to the bottom of the cooling plate 11, and the two ends of the side plate 122 are welded to the cooling plate 11, so that the cooling plate 11, the bottom plate 121 and the side plate 122 form a sealed shell 1, improving the safety of the battery cell during use. In the embodiment, no microchannels are arranged on the bottom of the cooling plate 11 close to the bottom plate 121, facilitating the welding of the bottom plate 121 to the cooling plate 11 and avoiding damage to the microchannels during welding. In the embodiment, the bottom plate 121 and the side plate 122 are integrally formed by bending processing, which not only facilitates the processing but also ensures the consistency of the performance of the sealing plate 12.
[0045] Further, one end of the cooling plate 11 is the liquid inflow end of the microchannels, and the other end is the liquid outflow end of the microchannels. The two ends of the side plate 122 connected to the cooling plate 11 are respectively provided with a liquid inlet 1221 and a liquid outlet 1222. The liquid inlet 1221 is in communication with the liquid inflow end of the microchannels, and the liquid outlet 1222 is in communication with the liquid outflow end of the microchannels. The cooling liquid flows into one end of the cooling plate 11 through the liquid inlet 1221, flows along the microchannels to the other end of the cooling plate 11, and flows out through the liquid outlet 1222, completing the cooling of the battery cell body. The cooling liquid directly contacts the side surface of the battery cell body, and the cooling effect is good. The liquid inlet 1221 and the liquid outlet 1222 are arranged on the two sides of the side plate 122, realizing the connection between the battery cell body and the cooling liquid pipeline outside.
[0046] As shown in Figure 4 Further, the top cover assembly 2 comprises a cover body 21 and positive and negative poles 22 and 23 arranged at a distance from each other. The cover body 21 covers the opening of the accommodating cavity. The positive and negative poles 22 and 23 are arranged in the cover body 21 at the end close to the opening of the accommodating cavity and are respectively riveted to the cover body 21. The battery cell structure completes the charging and discharging process through the positive and negative poles 22 and 23. The cover body 21 is arranged at the top of the shell 1 and is welded to the top of the cooling plate 11, so that the entire battery cell structure is in a sealed state. In the embodiment, no microchannels are arranged on the top of the cooling plate 11 close to the cover body 21, facilitating the welding of the cover body 21 to the cooling plate 11 and avoiding damage to the microchannels during welding.
[0047] In detail, the top cover assembly 2 further comprises a positive riveting block 24 and a negative riveting block 25, the upper surface of the cover body 21 is provided with a first mounting groove and a second mounting groove, the positive riveting block 24 is provided with a first through hole 241, the negative riveting block 25 is provided with a second through hole 251, the cover body 21 is provided with a first mounting hole 211 and a second mounting hole 212, the first mounting hole 211 is correspondingly arranged with the first through hole 241, and the second mounting hole 212 is correspondingly arranged with the second through hole 251. During installation, the positive riveting block 24 is partially embedded in the first mounting groove on the cover body 21, the negative riveting block 25 is partially embedded in the second mounting groove on the cover body 21, one end of the positive pole 22 passes through the first mounting hole 211 and the first through hole 241 on the lower surface of the cover body 21 in sequence, a rivet is inserted into the positive pole 22, and the positive riveting block 24, the cover body 21 and the positive pole 22 are riveted together through riveting; the assembly process of the negative riveting block 25, the cover body 21 and the negative pole 23 is consistent with that of the positive pole 22, which will not be described here; after riveting, welding is performed at the connection between the rivet and the positive riveting block 24 and the connection between the rivet and the negative riveting block 25, further ensuring the sealing performance of the riveting part. The top cover assembly 2 adopts a riveting connection mode, which is simple in structure and convenient to process.
[0048] In the embodiment, the positive riveting block 24 and the negative riveting block 25 are both made of aluminum material, the positive pole 22 is made of aluminum material, and the corresponding positive pole 22 is riveted by an aluminum rivet; the negative pole 23 is made of copper material, in order to realize good riveting with the negative riveting block 25, the negative pole 23 is riveted by an aluminum rivet, and the aluminum rivet and the copper negative pole 23 are combined into one body through friction welding, thereby ensuring the reliability of the connection of the negative pole 23. The friction welding is prior art, which will not be described here.
[0049] In order to avoid excessive temperature in the cell body during the process of large-current super-fast charging, in the embodiment, two positive poles 22 and two negative poles 23 are arranged, the contact area of the positive pole 22 and the positive riveting block 24 and the contact area of the negative pole 23 and the negative riveting block 25 are increased, the internal resistance is reduced, and the ability of the cover body 21 itself to pass large current is ensured. Correspondingly, the first through hole 241 on the positive riveting block 24, the second through hole 251 on the negative riveting block 25, and the first mounting hole 211 and the second mounting hole 212 on the cover body 21 are correspondingly arranged with the number of positive poles 22 and negative poles 23, and are riveted by corresponding number of rivets.
[0050] Further, the top cover assembly 2 further comprises a first insulating pad 26, a second insulating pad 27 and a third insulating pad 28, the first insulating pad 26 is arranged between the positive riveting block 24 and the cover body 21 and is partially embedded in the first mounting groove, the second insulating pad 27 is arranged between the negative riveting block 25 and the cover body 21 and is partially embedded in the second mounting groove, and the third insulating pad 28 is arranged on the lower surface of the cover body 21, one end of the positive pole 22 passes through the third insulating pad 28, the first mounting hole 211 on the cover body 21, the first insulating pad 26 and the first through hole 241 in sequence, and one end of the negative pole 23 passes through the third insulating pad 28, the second mounting hole 212 on the cover body 21, the second insulating pad 27 and the second through hole 251 in sequence, and the first insulating pad 26, the second insulating pad 27 and the third insulating pad 28 can effectively isolate the components connected with the positive pole 22 or the negative pole 23, prevent internal short circuit of the battery structure and ensure the safety of the battery structure.
[0051] In the embodiment, the first insulating pad 26 and the second insulating pad 27 are made of polyphenylene sulfide (PPS), and the polyphenylene sulfide is a non-metallic insulating material, which is high in temperature resistance, high in strength and good in stability, and the first insulating pad 26 and the second insulating pad 27 can be formed by injection molding.
[0052] Further, the top cover assembly 2 further comprises an explosion-proof valve diaphragm 29, and the explosion-proof valve diaphragm 29 is arranged on the cover body 21.
[0053] The utility model embodiment further provides a vehicle, including chassis and above-mentioned electric core structure, electric core structure installs on the chassis, this vehicle can shorten the charging time of vehicle through setting electric core structure, improves the service life of battery.
[0054] Embodiment two
[0055] Reference Figures 2-3 In the embodiment, the shell 1 and the top cover assembly 2 have the same structure as those in the first embodiment, and the difference is that two electric core bodies are arranged in the embodiment, so that the electric capacity of the electric core structure can be increased, and the endurance of the vehicle can be improved.
[0056] In the embodiment, two cell bodies are connected in parallel, and correspondingly, the top cover assembly 2 is provided with two groups, the shell 1 is provided with two accommodating cavities, the two cell bodies are placed in the two accommodating cavities one by one, and the two top cover assemblies 2 are correspondingly arranged at the openings of the two accommodating cavities; the cooling plate 11 is composed of two U-shaped structures, and one second plate 112 in one of the U-shaped structures is coplanar with one second plate 112 in the other U-shaped structure, that is, the cooling plate 11 is arranged in an S-shaped structure with two openings, the bottom plate 121 closes the bottom of the cooling plate 11, the side plate 122 is provided with two side plates 122, which are respectively located at two ends of the bottom plate 121 and are arranged perpendicularly to the bottom plate 121, the two side plates 122 are arranged one by one corresponding to the two openings on the cooling plate 11, and the cooling plate 11, the bottom plate 121 and the two side plates 122 form two accommodating cavities after being connected; the microchannel is consistent with the extension direction of the cooling plate 11, the liquid inlet 1221 is arranged on one of the side plates 122, and the liquid outlet 1222 is arranged on the other side plate 122, the liquid inlet 1221 and the liquid outlet 1222 are located at two ends of the cooling plate 11, three surfaces of each cell body can be directly contacted with the cooling plate 11, the microchannel passes through the three surfaces of the cell body, the cooling liquid directly cools the cell body, the heat exchange efficiency is high, the cooling effect is good, and in the process of super-fast charging of a large current, the cell body can maintain a suitable temperature.
[0057] In some other embodiments, three or more than three cell bodies can also be arranged, the number of the top cover assemblies 2 corresponds to the number of the cell bodies, and the structure of the cooling plate 11 and the sealing plate 12 in the shell 1 corresponds to the number of the cell bodies, and the number of the cell bodies is not limited here.
[0058] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not limited to the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required or can not be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.
Claims
1. An electrode structure comprising an electrode body, characterized by, The battery cell structure further comprises: a shell (1) provided with an accommodating cavity with an opening, the battery cell body being placed in the accommodating cavity, the shell (1) comprising cooling plates (11) arranged along the circumference of the battery cell body, the two cooling plates (11) being spaced apart to form a cavity, a microchannel being arranged in the cavity, liquid in the microchannel flowing along the circumference of the battery cell body; a top cover assembly (2) arranged at the opening of the accommodating cavity, the top cover assembly (2) being used to connect the internal electrodes of the battery cell body with external devices.
2. The cell structure of claim 1, wherein, The microchannel comprises a plurality of microchannel pipes which are in communication with each other and closely arranged, and the plurality of microchannel pipes are arranged along the battery cell body in a direction from one end to the other end of the top cover assembly (2).
3. The cell structure of claim 1, wherein, The cooling plates (11) are arranged in a U-shaped structure along the circumference of the battery cell body, one end of the U-shaped structure is provided with the top cover assembly (2), and the shell (1) further comprises a sealing plate (12) arranged at the end of the cooling plate (11) away from the top cover assembly (2) and the opening of the U-shaped structure, so as to close the end of the cooling plate (11) away from the top cover assembly (2) and the opening, and the cooling plate (11) and the sealing plate (12) form the accommodating cavity.
4. The cell structure of claim 3, wherein, The sealing plate (12) comprises a bottom plate (121) connected to the end of the cooling plate (11) away from the top cover assembly (2) and a side plate (122) arranged perpendicularly to the bottom plate (121), and the side plate (122) is used to close the opening on the cooling plate (11).
5. The cell structure of claim 4, wherein, One end of the cooling plate (11) is the liquid inflow end of the microchannel, and the other end is the liquid outflow end of the microchannel, the side plate (122) is provided with a liquid inlet (1221) and a liquid outlet (1222) at the two ends connected to the cooling plate (11), respectively, the liquid inlet (1221) is in communication with the liquid inflow end of the microchannel, and the liquid outlet (1222) is in communication with the liquid outflow end of the microchannel.
6. The cell structure of claim 3, wherein, The cooling plate (11) comprises a first plate (111) and two second plates (112), the two second plates (112) being oppositely arranged on the two sides of the first plate (111), the opening being oppositely arranged to the first plate (111), and the length of the first plate (111) being less than the length of the second plate (112).
7. The cell structure of claim 1, wherein, The top cover assembly (2) comprises a cover body (21), a positive electrode column (22) and a negative electrode column (23) arranged at intervals, the cover body (21) being arranged at the opening of the accommodating cavity, the positive electrode column (22) and the negative electrode column (23) being arranged in the cover body (21) from the end of the cover body (21) close to the opening of the accommodating cavity and being respectively riveted to the cover body (21).
8. The cell structure of claim 7, wherein, The positive pole post (22) is provided at least two, two said positive pole post (22) interval arrangement, the negative pole post (23) is provided at least two, two said negative pole post (23) interval arrangement.
9. The cell structure of claim 7, wherein, The top cover assembly (2) further comprises an explosion-proof valve diaphragm (29), which is arranged on the cover body (21).
10. Vehicle, characterized in that An electric cell structure as claimed in any one of claims 1 to 9 is mounted on a base plate.