WO2023173655A1

WO2023173655A1 - Battery structure assembly, battery, and electric vehicle

Info

Publication number: WO2023173655A1
Application number: PCT/CN2022/110109
Authority: WO
Inventors: 邓国友; 靳勇; 慎晓杰; 姚煜; 殷晓丰
Original assignee: 微宏公司
Priority date: 2022-03-16
Filing date: 2022-08-03
Publication date: 2023-09-21
Also published as: CN217387470U

Abstract

A battery structure assembly comprises a housing (1) and a pole (3), wherein one end of the pole (3) is provided with a stop portion (31), the stop portion (31) is located outside the housing (1), and the pole (3) penetrates through an end surface of the housing (1) and is secured to the housing (1) by means of riveting; the battery structure assembly further comprises a pressing block (4), the pressing block (4) participating in the riveting, and the pressing block (4) being located on the pole (3). Compared to a welding securing method, the battery structure assembly uses riveting for securing the pole (3) to the housing (1), which not only simplifies the securing operation, increasing production efficiency, but also reduces production cost.

Description

Battery structural components, batteries and electric vehicles

Technical field

The present application relates to the field of battery technology, and in particular to a battery structural component, a battery and an electric vehicle.

Background technique

With the development of electronic technology, lithium-ion batteries have been widely used due to their advantages such as high specific power, long cycle life, good safety performance and no pollution. Lithium-ion batteries can be divided into cylindrical batteries, square case batteries and soft pack batteries according to their appearance. Among them, cylindrical batteries have received more and more attention, and their applications are becoming more and more widespread.

technical problem

Existing cylindrical batteries generally include a casing, a cover, a battery core, etc. The positive connection terminal and the negative connection terminal of the existing cylindrical battery are respectively provided at the opposite ends of the cylindrical battery, which places certain restrictions on the battery grouping technology. , affecting the battery arrangement and battery energy density (since the positive connection terminal and the negative connection terminal are respectively set at the opposite ends of the cylindrical battery, when the batteries are connected in series and parallel to form a group, the batteries must first be placed according to the requirements of the corresponding polarity, not only This increases the risk of incorrect battery placement, increases the number of structural components, complicates wiring design, increases production costs, and reduces battery energy density). Moreover, the existing cylindrical battery has a long electrical connection path between the current collecting plate and the pole, and a small contact area, resulting in poor thermal conductivity. Therefore, existing cylindrical batteries still need to be structurally improved to solve problems such as the complexity of battery group arrangement and production cost, while also improving the heat dissipation performance and sealing performance of the battery.

Technical solutions

The purpose of this application is to provide a battery structural component and battery, aiming to solve or at least partially solve the shortcomings of the above background technology. The pole and the shell are fixed by riveting. Compared with the welding fixation method, it not only simplifies the fixation operation , improve production efficiency and reduce production costs.

An embodiment of the present application provides a battery structural assembly, including a casing. The battery structural assembly also includes a pole. One end of the pole is provided with a stopper, and the stopper is located outside the casing. , the pole penetrates the end face of the casing and is fixed with the casing by riveting; the battery structural component also includes a pressing block, and the pressing block participates in riveting, that is, the pressing block, the pole and the The three parts of the housing are riveted, and the pressing block is located on the pole.

In an implementable manner, the end surface of the housing is provided with a through hole, and the pole includes a main body and a first end and a second end respectively located at opposite ends of the main body, and the main body is inserted into In the through hole, the first end and the second end respectively extend and protrude from the main body in opposite directions toward the outside of the through hole; the stopper is provided on the pole. The first end and the second end of the pole extend into the housing, and the housing, the first end and the second end are riveted; the part of the housing participating in the riveting is located at the between the first end and the second end.

In an implementable manner, the pressure block is provided at the first end and/or the second end of the pole.

In an implementable manner, the pressure block has an annular structure, and the pressure block is sleeved on the first end and/or the second end of the pole.

In an implementable manner, a flange is formed on the second end of the pole, and the stopper, the flange and the housing are riveted; the part of the housing participating in the riveting is located at the between the stopper and the flange.

In an implementable manner, the pressure block is disposed on the pole close to the flange, and the pressure block is located between the flange and the housing; or, the pressure block The block is disposed on the pole near the stopper, and the pressing block is located between the stopper and the housing.

In an implementable manner, the battery structural component further includes an insulating sealing ring, the insulating sealing ring is sleeved on the pole, and the insulating sealing ring is used between the pole and the casing. insulation and sealing.

In an implementable manner, the battery structural component further includes a first current collecting plate, the first current collecting plate is located in the housing, and the first current collecting plate is electrically connected to the pole.

In an implementable manner, the first current collecting plate includes a plate body and an electrical connection portion, the electrical connection portion is formed by the plate body extending and protruding toward the pole, and the electrical connection portion is connected to The poles are electrically connected.

In an implementable manner, the pole is provided with a central hole, the electrical connection part is inserted into the central hole, and the electrical connection part is electrically connected to the pole.

In an implementable manner, the side wall of the electrical connection part is in contact with the inner wall of the central hole to realize the electrical connection between the electrical connection part and the pole.

In an implementable manner, the battery structural component further includes a sealing piece, the sealing piece is sealingly connected to the pole, and the sealing piece seals the central hole on the pole.

In an implementable manner, the pole is a positive pole or a negative pole.

Another embodiment of the present application also provides a battery, including the battery structural component described above.

In an implementable manner, the battery further includes a first current collecting plate, a second current collecting plate, a battery core and a cover plate, and the first current collecting plate, the second current collecting plate and the The electric cores are all arranged in the casing, the bottom end of the casing is provided with an opening, and the cover plate is arranged at the opening; both sides of the first current collecting plate are respectively connected with the top end of the electric cores. It is electrically connected to the pole, and both sides of the second current collecting plate are electrically connected to the bottom end of the battery core and the cover plate respectively. In an implementable manner, both sides of the first current collecting plate are respectively in contact with the top end of the battery core and the pole to achieve electrical connection, and both sides of the second current collecting plate are respectively in contact with the top of the battery core and the pole. It is in contact with the bottom end of the battery core and the housing to achieve electrical connection.

In an implementable manner, the first current collecting plate can be a positive electrode current collecting plate or a negative electrode current collecting plate; the second current collecting plate can also be a positive electrode current collecting plate or a negative electrode current collecting plate. When the first current collecting plate is a positive electrode current collecting plate, the second current collecting plate is a negative electrode current collecting plate; on the contrary, when the first current collecting plate is a negative electrode current collecting plate, the second current collecting plate The plate is the positive current collecting plate.

Another embodiment of the present application also provides an electric vehicle, including the above-mentioned battery.

beneficial effects

In the battery structural assembly provided by this application, the poles and the casing are fixed by riveting. Compared with the welding fixation method, it not only simplifies the fixing operation, improves production efficiency, but also reduces production costs.

Description of the drawings

Figure 1 is a schematic cross-sectional view of a battery structural component in an embodiment of the present application.

Figure 2 is a schematic cross-sectional view of the pole in Figure 1.

FIG. 3 is a schematic three-dimensional structural diagram of the first collecting plate in FIG. 1 .

Figure 4 is a schematic cross-sectional view of a battery structural component in another embodiment of the present application.

Embodiments of the invention

Specific implementations of the present application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

The terms "first", "second", "third", "fourth", etc. (if present) in the description and claims of this application are used to distinguish similar objects and are not necessarily used to describe specific Sequence or sequence.

The directional terms such as up, down, left, right, front, back, top, bottom, etc. (if any) mentioned in the description and claims of this application are based on the position of the structure in the drawing and the relationship between the structures in the drawing. It is defined by the position between them just to express the clarity and convenience of the technical solution. It should be understood that the use of locative words should not limit the scope of protection claimed in this application.

As shown in Figure 1, the battery structural assembly provided by the embodiment of the present application includes a case 1 and a pole 3. The pole 3 has a T-shaped structure. One end of the pole 3 is provided with a stopper 31. The stopper 31 is composed of The side walls of the pole 3 are formed to protrude outward in the radial direction, and the stopper 31 is located outside the housing 1. The pole 3 penetrates the end surface of the housing 1 and is fixed with the housing 1 by riveting. The battery structural component also includes a pressure block 4. The pressure block 4 participates in riveting, that is, the pressure block 4, the pole 3 and the case 1 are riveted together. The pressure block 4 is located on the pole 3. During riveting, the pole 3 and the pressure block 4 are fitted together.

Specifically, in this embodiment, the pole post 3 and the housing 1 are fixed by riveting. Compared with the welding fixation method, it not only simplifies the operation, improves the production efficiency, but also reduces the production cost.

As an embodiment, the pressing block 4 may be an aluminum block. Of course, in other embodiments, the pressing block 4 can also be made of other materials.

As shown in Figures 1 and 2, as an embodiment, the end surface of the housing 1 is provided with a through hole 11, and the pole 3 includes a main body 30A and a first end 30B and a second end respectively located at opposite ends of the main body 30A. 30C, the main body part 30A is inserted into the through hole 11, and the first end 30B and the second end 30C are respectively extended and protruded from the main body part 30A in opposite directions toward the outside of the through hole 11 (in this embodiment, the first end 30B is The main body part 30A extends upward and protrudes, and the second end 30C extends downward and protrudes from the main body part 30A). The stopper 31 is provided on the first end 30B of the pole 3. The second end 30C of the pole 3 extends into the housing 1. The housing 1, the first end 30B and the second end 30C are riveted. The housing 1 The part involved in riveting is located between the first end 30B and the second end 30C.

As shown in FIGS. 1 and 2 , as an embodiment, the pressing block 4 is disposed on the second end 30C of the pole 3 (that is, the pressing block 4 is filled in the lower end of the pole 3 ). Of course, in other embodiments, the pressing block 4 can also be disposed on the first end 30B of the pole 3 , or on both the first end 30B and the second end 30C of the pole 3 .

As shown in FIGS. 1 and 2 , as an embodiment, the pressure block 4 has an annular structure, and the pressure block 4 is sleeved on the second end 30C of the pole 3 . Of course, in other embodiments, the pressing block 4 can also be sleeved on the first end 30B of the pole 3 , or simultaneously sleeved on the first end 30B and the second end 30C of the pole 3 .

As shown in Figures 1 and 2, as an embodiment, a flange 32 is formed on the second end 30C of the pole 3. The flange 32 is formed by protruding radially outward from the side wall of the pole 3. The flange 32 32 is located in the housing 1. In the radial direction of the pole 3 , the diameter of the stop 31 is larger than the diameter of the flange 32 . The stopper 31 and the flange 32 are riveted to the housing 1 , and the part of the housing 1 participating in the riveting is located between the stopper 31 and the flange 32 . The pressing block 4 is sleeved on the pole 3 at a position close to the flange 32 , and the pressing block 4 is located between the flange 32 and the housing 1 . During riveting, the pressing block 4 is fitted with the flange 32 . Of course, in other embodiments, the pressure block 4 can also be sleeved on the pole 3 at a position close to the stopper 31 , in which case the pressure block 4 is located between the stopper 31 and the housing 1 .

Specifically, as shown in Figures 1 and 2, the stopper 31 is a structure of the pole 3 itself (that is, the stopper 31 exists before the pole 3 and the housing 1 are riveted), and the flange 32 is It is formed when the pole 3 and the casing 1 are riveted (that is, there is no flange 32 before the pole 3 and the casing 1 are riveted). Specifically, as shown in Figure 1, in this embodiment, when the pole 3 and the housing 1 are riveted, the T-shaped pole 3 is first inserted into the through hole 11 on the housing 1 from top to bottom. within, and then mechanically pressurize (such as riveting, etc.) the lower end of the pole 3 to flatten it to form the flange 32; during the process of pressurizing and flattening the lower end of the pole 3 to form the flange 32, the pole will be 3 forms an upsetting effect (that is, the length of the pole 3 is shortened and the diameter is increased), so that the pole 3 and the shell 1 are fixed, thereby achieving the riveting of the pole 3 and the shell 1. Among them, the stopper 31 and the flange 32 both play a limiting role. The stopper 31 and the flange 32 cooperate to press the housing 1 tightly to prevent the pole 3 from falling off from the through hole 11 on the housing 1 . At the same time, when the pole 3 and the casing 1 are riveted, the insulating sealing ring 51 is compressed during the formation of the flange 32 of the pole 3, so that the gap between the stopper 31 and the casing 1 is completely filled with the insulating sealing ring. 51 filling, thereby improving the sealing performance of the battery.

As shown in Figures 1 and 3, as an embodiment, the battery structural component also includes a first current collecting plate 6. The first current collecting plate 6 is disposed in the housing 1. The first current collecting plate 6 and the pole 3 Contact to achieve electrical connection between the first current collecting plate 6 and the pole 3 .

As shown in Figures 1 and 3, as an embodiment, the first current collecting plate 6 includes a plate body 61 and an electrical connection portion 62. The electrical connection portion 62 is formed by the plate body 61 extending and protruding toward the pole 3. The plate body 61 61 is in contact with the end surface of the battery core 8 , and the electrical connection portion 62 is in contact with the pole 3 to realize the electrical connection between the electrical connection portion 62 and the pole 3 .

As shown in FIGS. 1 and 3 , as an embodiment, the pole 3 is provided with a central hole 33 , the electrical connection part 62 is inserted into the central hole 33 , and the side walls of the electrical connection part 62 are in contact with the inner wall of the central hole 33 . Contact to achieve electrical connection between the electrical connection portion 62 and the pole post 3 .

Specifically, in this embodiment, the cross-section of the electrical connection part 62 is a circular structure, and the electrical connection part 62 is a hollow truncated cone-shaped structure with a tapered diameter along the direction approaching the pole 3 . By providing the electrical connection portion 62 on the first current collecting plate 6, the contact area between the first current collecting plate 6 and the pole 3 is increased, so that the heat generated inside the battery core 8 can be quickly dissipated from the pole 3, thereby Improve the thermal runaway caused by the high heat generated by the battery core 8 during high-rate charging and discharging. Of course, as shown in Figure 4, in other embodiments, the first current collecting plate 6 can also be a flat disc-shaped structure, and the pole 3 is a solid block (that is, the pole 3 is not provided with a central hole 33). The first current collecting plate 6 is in contact with the bottom surface of the pole 3 .

As shown in Figure 1, as an embodiment, the battery structural component also includes an insulating sealing ring 51. The insulating sealing ring 51 is sleeved on the pole 3 and close to the stopper 31. The insulating sealing ring 51 is used for connecting the pole 3 and the stopper 31. Insulation and sealing between housings 1.

As shown in FIG. 1 , as an embodiment, the insulating sealing ring 51 is at least partially disposed in the through hole 11 , and the insulating sealing ring 51 is located between the outer wall of the pole 3 and the inner wall of the through hole 11 .

Specifically, in this embodiment, the insulating sealing ring 51 has a T-shaped structure (of course, in other embodiments, the insulating sealing ring 51 can also have an O-shaped structure), and a part of the insulating sealing ring 51 is located in the through hole 11 (That is, between the outer wall of the pole 3 and the inner wall of the through hole 11), the other part is located on the outer side of the housing 1 and is sandwiched between the stopper 31 and the end surface of the housing 1, so that the insulating sealing ring 51 It can achieve a good sealing effect between the pole 3 and the casing 1, and at the same time can isolate the pole 3 and the casing 1 to prevent the pole 3 and the casing 1 from conducting electricity. At the same time, when the pole 3 and the housing 1 are riveted, in the process of pressurizing the pole 3 to make the pole 3 upsetting, the stopper 31 will exert a squeezing effect on the insulating sealing ring 51, so that the stopper 31 The insulating sealing ring 51 between 31 and the housing 1 is pressed tightly, thereby further improving the sealing effect.

As shown in Figure 1, as an embodiment, the battery structural assembly also includes an insulating ring 52. The insulating ring 52 is disposed between the stopper 31 and the end surface of the housing 1. The insulating ring 52 is used to insulate the pole 3 and the housing. Body 1 to prevent pole 3 and housing 1 from conducting electricity.

Specifically, in this embodiment, the insulating sealing ring 51 has a small circular ring structure with an open center, and the insulating ring 52 has a large circular ring structure with an open center. The insulating ring 52 is arranged around the periphery of the insulating sealing ring 51 .

As shown in FIG. 1 , as an embodiment, the battery structural component further includes an insulating gasket 53 , and the insulating gasket 53 is disposed between the pressure block 4 and the end surface of the housing 1 .

Specifically, in this embodiment, part of the insulating gasket 53 is located between the pressure block 4 and the end surface of the housing 1, and the other part is located between the first current collecting plate 6 and the end surface of the housing 1, thereby preventing the pressure block from being 4 and the housing 1 are electrically conductive, and the first current collecting plate 6 is prevented from being electrically conductive with the housing 1 .

As shown in Figure 1, as an embodiment, the battery structural assembly also includes a sealing piece 9 (the sealing piece 9 can be an explosion-proof piece). The sealing piece 9 is sealingly connected to the top surface of the pole 3, and the sealing piece 9 seals the pole 3. center hole 33.

As shown in FIG. 1 , an embodiment of the present application also provides a battery, which is particularly suitable for cylindrical batteries. The battery includes the above-mentioned battery structural components.

As shown in Figure 1, as an embodiment, the battery also includes a battery core 8 and a first current collecting plate 6. The battery core 8 and the first current collecting plate 6 are both arranged in the housing 1. The first current collecting plate 6 Located between the top of the battery core 8 and the pole 3 , both sides of the first current collecting plate 6 are electrically connected to the top of the battery core 8 and the pole 3 respectively.

As shown in FIG. 1 , as an embodiment, both sides of the first current collecting plate 6 are respectively in contact with the top end of the battery core 8 and the pole 3 to achieve electrical connection.

As shown in FIGS. 1 and 3 , as an embodiment, the first current collecting plate 6 includes a plate body 61 and an electrical connection portion 62 . The electrical connection portion 62 extends and protrudes from the plate body 61 toward the pole 3 . The plate body 61 It is in contact with the end surface of the battery core 8; the pole post 3 is provided with a central hole 33, the electrical connection part 62 is inserted into the central hole 33, and the side wall of the electrical connection part 62 is in contact with the inner wall of the central hole 33.

As shown in Figure 1, as an embodiment, the battery also includes a cover plate 2 and a second collecting plate 7. The casing 1 has a cylindrical tank structure. The bottom end of the casing 1 is provided with an opening 12. The cover plate 2 It is fixed at the opening 12, and the cover 2 is electrically connected to the housing 1. The second current collecting plate 7 is arranged in the housing 1. The second current collecting plate 7 is located between the bottom end of the battery core 8 and the cover 2. Both sides of the second current collecting plate 7 are respectively connected with the bottom end of the battery core 8. It is electrically connected to the cover plate 2.

As shown in FIG. 1 , as an embodiment, both sides of the second current collecting plate 7 are in contact with the bottom end of the battery core 8 and the cover plate 2 respectively to achieve electrical connection.

As shown in Figure 1, as an embodiment, the two ends of the battery core 8 are respectively provided with positive electrode tabs 81 and negative electrode tabs 82, the pole 3 is the positive pole, the first current collecting plate 6 is the positive current collecting plate, and the second The current collecting plate 7 is a negative electrode current collecting plate. Both sides of the first current collecting plate 6 are in contact with the positive electrode lug 81 and the pole 3 of the battery core 8 respectively. Both sides of the second current collecting plate 7 are respectively in contact with the positive electrode lug 81 and the pole 3 of the battery core 8 The negative electrode tab 82 is in contact with the cover plate 2 . Of course, in other embodiments, it can also be: the pole 3 is a negative pole, the first current collecting plate 6 is a negative current collecting plate, the second current collecting plate 7 is a positive current collecting plate, and the first current collecting plate 6 is The two sides are in contact with the negative electrode lug 82 and the pole post 3 of the battery core 8 respectively, and the two sides of the second current collecting plate 7 are in contact with the positive electrode lug 81 and the cover plate 2 of the battery core 8 respectively.

Specifically, when the pole 3 is a positive pole, the casing 1 can be a steel shell (of course it can also be made of other materials). At this time, the pole 3 serves as the positive electrical connection terminal of the battery, and the casing 1 and the cover 2 serve as the battery. The negative electrical connection terminal of the battery; when the pole 3 is the negative pole, the housing 1 can be an aluminum shell. At this time, the pole 3 serves as the negative electrical connection terminal of the battery, and the shell 1 and the cover 2 serve as the positive electrical connection terminal of the battery. . In this embodiment, the end surfaces of the pole 3 and the housing 1 are used as the positive electrical connection terminal and the negative electrical connection terminal respectively (or the pole 3 is used as the negative electrical connection terminal and the end surface of the housing 1 is used as the positive electrical connection terminal). Leading the positive and negative poles of the battery to the same side of the battery (for example, in this embodiment, both the positive and negative poles of the battery are led to the top of the battery), compared to arranging the positive electrical connection terminal and the negative electrical connection terminal respectively on the battery. The design of opposite ends is conducive to battery grouping, can facilitate the arrangement of battery cells 8, reduce the number of structural components when batteries are grouped, simplify the BMS wiring design, reduce costs, and at the same time make the battery arrangement more compact, improving Battery energy density.

As shown in Figure 1, as an implementation method, the positive electrode lug 81 and the negative electrode lug 82 of the battery core 8 both adopt a full-lug design. The first current collecting plate 6 and the positive electrode lug 81 and the second current collecting plate 7 and the negative electrode The ears 82 may be secured by welding.

As an embodiment, an electrolyte solution is also provided in the case 1 so that the battery can be charged and discharged through the electrochemical reaction of the positive and negative electrode sheets of the battery core 8 and the electrolyte solution. The electrolyte solution can be formed from organic solvents such as EC, PC, DEC, EMC and EMC and lithium salts such as LiPF ₆ or LiBF _4. The electrolyte solution can be in a liquid, solid or gel state, etc.

The advantages of the battery structural components and batteries provided by the embodiments of the present application are:

1. By riveting the pole 3 to the housing 1, it not only simplifies the operation, improves the production efficiency, but also reduces the production cost;

2. By using the end faces of the pole 3 and the shell 1 as the positive electrical connection terminal and the negative electrical connection terminal (or using the pole 3 as the negative electrical connection terminal and the end face of the shell 1 as the positive electrical connection terminal), the The positive and negative electrodes of the battery are led to the same side of the battery, which is conducive to battery grouping, facilitates the arrangement of battery cells 8, reduces the number of structural components when the battery is grouped, simplifies the wiring design of the BMS, reduces costs, and at the same time makes The battery arrangement is more compact, improving the energy density of the battery;

3. By arranging the electrical connection portion 62 on the first current collecting plate 6, the contact area between the first current collecting plate 6 and the pole 3 is increased, so that the heat generated inside the battery core 8 can be quickly discharged from the pole 3 , thereby improving the thermal runaway caused by the large amount of heat generated by the battery core 8 during high-rate charging and discharging;

4. The sealing performance of the insulating sealing ring 51 is good (when the pole 3 and the housing 1 are riveted, the pole 3 will exert a squeezing effect on the insulating sealing ring 51 when it is upset, causing the insulating sealing ring 51 to be compressed. Thereby improving the sealing effect of the insulating sealing ring 51) and being durable, it can prevent the battery from leaking during long-term use and increase the service life of the battery;

5. By setting the pressing block 4, the insulating gasket 53 can be prevented from being cracked or crushed during the upsetting process of the pole 3, thereby affecting the sealing of the battery. During the upsetting process, since the contact area between the formed flange 32 and the insulating gasket 53 is small, the insulating gasket 53 is easily crushed or cracked. After adding the pressure block 4, since the surface area of the pressure block 4 is larger than the surface area of the flange 23, the contact area with the insulating gasket 53 increases; in addition, because the pressure block 4 has a certain elasticity, the pressure block 4 can further buffer The pressure on the insulating gasket 53 during the upsetting process. Therefore, by arranging the pressing block 4, the contact area with the insulating gasket 53 is increased, and it plays a buffering role, greatly reducing the pressure on the insulating gasket 53 during the upsetting process, thereby improving the sealing performance of the battery.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, and all of them should be covered. within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A battery structural assembly includes a housing (1), characterized in that the battery structural assembly also includes a pole (3), and one end of the pole (3) is provided with a stopper (31), and the The stopper (31) is located outside the housing (1), and the pole (3) penetrates the end surface of the housing (1) and is fixed with the housing (1) by riveting; the battery structure The assembly also includes a pressing block (4), which participates in riveting, and is located on the pole (3).
The battery structural assembly according to claim 1, characterized in that the end surface of the housing (1) is provided with a through hole (11), and the pole (3) includes a main body (30A) and two holes respectively located on the The first end (30B) and the second end (30C) at opposite ends of the main body (30A) are inserted into the through hole (11), and the first end (30B) and the second end (30C) are inserted into the through hole (11). The second end (30C) extends and protrudes from the main body (30A) in opposite directions toward the outside of the through hole (11); the stopper (31) is provided on the pole (3) The first end (30B) of the pole (3) extends into the housing (1). The housing (1) and the first end (30B) and the second end (30C) are riveted; the part of the housing (1) participating in the riveting is located between the first end (30B) and the second end (30C).
The battery structural assembly according to claim 2, characterized in that the pressure block (4) is provided at the first end (30B) and/or the second end (30C) of the pole (3).
The battery structural assembly according to claim 3, characterized in that the pressure block (4) has an annular structure, and the pressure block (4) is sleeved on the first end (30B) of the pole (3). and/or second end (30C).
The battery structural assembly according to claim 2, characterized in that a flange (32) is formed on the second end (30C) of the pole (3), and the stopper (31), the flange (32) is riveted with the housing (1); the part of the housing (1) participating in the riveting is located between the stopper (31) and the flange (32).
The battery structural assembly according to claim 5, characterized in that the pressure block (4) is disposed on the pole (3) close to the flange (32), and the pressure block (4) is located between the flange (32) and the housing (1); or, the pressure block (4) is provided on the pole (3) close to the stopper portion (31), The pressure block (4) is located between the stopper (31) and the housing (1).
The battery structural assembly according to claim 1, characterized in that the battery structural assembly further includes an insulating sealing ring (51), and the insulating sealing ring (51) is sleeved on the pole (3), so The insulating sealing ring (51) is used for insulation and sealing between the pole (3) and the housing (1).
The battery structural assembly according to claim 1, characterized in that the battery structural assembly further includes a first current collecting plate (6), the first current collecting plate (6) is located in the housing (1) , the first current collecting plate (6) is electrically connected to the pole (3).
The battery structural assembly according to claim 8, characterized in that the first current collecting plate (6) includes a plate body (61) and an electrical connection part (62), and the electrical connection part (62) is composed of the The disk body (61) extends and protrudes toward the pole (3), and the electrical connection portion (62) is electrically connected to the pole (3).
The battery structural assembly according to claim 9, characterized in that the pole (3) is provided with a central hole (33), and the electrical connection part (62) is inserted into the central hole (33), The electrical connection part (62) is electrically connected to the pole (3).
The battery structural assembly according to claim 10, characterized in that the side wall of the electrical connection part (62) is in contact with the inner wall of the central hole (33) to realize the connection between the electrical connection part (62) and the Describe the electrical connection of pole (3).
The battery structural assembly according to claim 10, characterized in that the battery structural assembly further includes a sealing sheet (9), the sealing sheet (9) is sealingly connected to the pole (3), the sealing sheet (9) Seal the center hole (33) on the pole (3).
The battery structural component according to any one of claims 1 to 12, characterized in that the pole (3) is a positive pole or a negative pole.
A battery, characterized by comprising the battery structural component according to any one of claims 1-13.
The battery according to claim 14, characterized in that the battery further includes a first current collecting plate (6), a second current collecting plate (7), a battery core (8) and a cover (2). The first current collecting plate (6), the second current collecting plate (7) and the battery core (8) are all arranged in the housing (1), and the bottom end of the housing (1) is provided with There is an opening (12), and the cover plate (2) is provided at the opening (12); both sides of the first current collecting plate (6) are respectively connected with the top of the battery core (8) and the The pole (3) is electrically connected, and both sides of the second current collecting plate (7) are electrically connected to the bottom end of the battery core (8) and the cover (2) respectively.
An electric vehicle, characterized by comprising the battery according to any one of claims 14 or 15.