Battery cell structure, battery pack and automobile

Abstract

The utility model relates to the technical field of automobile accessories, in particular to a battery cell structure, a battery pack and an automobile. The battery cell structure comprises a plurality of first battery cells, the first battery cells are used for being arranged at the position close to a cross beam of a frame of the battery pack, first pole columns are arranged on the side walls of the first battery cells, and the first pole columns are used for being arranged at the position far away from the bottom wall of the frame; the first busbars are used for being arranged on the upper portion of the cross beam, the first busbars and the first pole columns are arranged in an overlapped mode, and the first busbars are electrically connected with the first pole columns. According to the battery cell structure, the battery pack and the automobile provided by the invention, when current flows on the first busbar, a relatively large over-current area is always achieved, so that the first busbar is prevented from being damaged due to overheating.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessories, and in particular to a battery cell structure, a battery pack and an automobile. BACKGROUND

[0002] The automobile battery pack, also known as a power battery pack, is a core component of a new energy automobile and is responsible for providing power for the entire vehicle.

[0003] The battery pack of the related art includes a frame, in order to improve the strength of the frame, a cross beam is arranged at the middle of the frame and at the edge of the frame, multiple installation spaces are formed between the multiple cross beams, and multiple battery cells are arranged in the frame and in each installation space.

[0004] However, when busbars are used to electrically connect the battery cells on both sides of the cross beam, because the pole of the battery cell is arranged at the lower part of the battery cell, the busbar needs to extend from one side of the cross beam to the other side of the cross beam through the upper part of the cross beam, at this time, the current flows upward from the lower part of one side of the busbar, then flows horizontally, and finally flows downward along the upper part of the other side of the busbar, when the current flows upward and downward on both sides of the busbar, the width of both sides of the busbar is small, the current flowing area on the busbar is small, the current density is increased, and thus both sides of the busbar are prone to overheating, and the busbar is prone to overheating and damage. CONTENT OF THE UTILITY MODEL

[0005] The embodiments of the present application provide a battery cell structure, a battery pack and an automobile, to solve the technical problem of the related art that the current flowing area is small when the current flows through the busbar, which easily leads to overheating and damage of the busbar.

[0006] In a first aspect, the embodiments of the present application provide a battery cell structure, comprising:

[0007] A plurality of first battery cells, the first battery cells are arranged at a position close to a cross beam of a frame of a battery pack, a first pole is arranged on a side wall of the first battery cell, and the first pole is arranged at a position away from a bottom wall of the frame;

[0008] A plurality of first busbars, the first busbars are arranged at the upper part of the cross beam, the first busbars are arranged in overlap with the first poles, and the first busbars are electrically connected with the first poles.

[0009] In some embodiments, a protrusion is arranged on the first busbar, and the protrusion extends towards the lower part of the first battery cell.

[0010] In some embodiments, further comprising:

[0011] A plurality of second electric cores are arranged between the adjacent first electric cores, and the plurality of second electric cores are arranged between the adjacent cross beams, and the second electric cores have second pole columns on the side walls of the second electric cores, and the second pole columns are arranged close to the bottom wall of the frame;

[0012] A plurality of second bus bars are arranged on the bottom wall of the frame, the second bus bars are arranged in the second pole columns, and the second bus bars are electrically connected with the second pole columns.

[0013] In some embodiments, a first circuit board is arranged on a side of the first bus bar away from the first pole column, the first circuit board is arranged in the first bus bar, and the first circuit board is electrically connected with the first bus bar.

[0014] In some embodiments, a second circuit board is connected with the first circuit board, the second circuit board is arranged along the arrangement direction of the plurality of second electric cores, the second circuit board is arranged on a side of the second bus bar away from the bottom wall of the frame, and the second circuit board is electrically connected with the second bus bar.

[0015] In some embodiments, the first circuit board and the second circuit board are integrally formed.

[0016] In some embodiments, an electric connector is arranged to electrically connect the first circuit board with the first bus bar and electrically connect the second circuit board with the second bus bar.

[0017] In some embodiments, the electric connector includes a nickel sheet arranged between the first circuit board and the first bus bar and between the second circuit board and the second bus bar.

[0018] In a second aspect, the embodiments of the present application provide a battery pack including a frame and the electric core structure arranged on the frame.

[0019] In a third aspect, the embodiments of the present application provide an automobile including a vehicle body and the electric core structure arranged on the vehicle body.

[0020] This application provides a battery cell structure, a battery pack, and an automobile. The battery cell structure provided in this application positions the first terminal of the first battery cell away from the bottom wall of the frame and positions the first busbar on the upper part of the crossbeam, allowing the first busbar to overlap with the first terminal. This enables the first busbar to electrically connect the first battery cells on both sides of the crossbeam at the location of the first terminal on the upper part of the first battery cell, eliminating the need to extend the first busbar from one side of the crossbeam through the upper part of the crossbeam to the other side. When current flows on the first busbar, it can flow directly from one side of the first busbar horizontally to the other side, without the current flowing downwards or upwards along the area where the first battery cell is located on the first busbar. This design allows current to flow without bypassing the crossbeam, eliminating narrow current flow areas on the first busbar. Since there are no other components above the crossbeam affecting the arrangement of the first busbar, it can be positioned wider, ensuring a larger flow area and enabling the busbar to carry greater current. This reduces the current density on the busbar, minimizing heat generation and preventing damage from overheating. Furthermore, placing the first busbar above the crossbeam facilitates installation, improving ease of installation. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 A schematic diagram of the battery cell structure in its assembled state provided in this application;

[0023] Figure 2 for Figure 1 Enlarged view of part A in the image.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. First cell; 110. First terminal;

[0026] 200. First busbar; 210. Protrusion;

[0027] 300, Second cell; 310, Second terminal;

[0028] 400, Second Busbar;

[0029] 500. First circuit board;

[0030] 600. Second circuit board;

[0031] 700, electrical connection;

[0032] 800, frame; 810, beam.

[0033] The specific embodiments of the application have been shown by way of example in the above figures, and will be described in greater detail below. These figures and this written description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept by reference to specific embodiments. DETAILED DESCRIPTION

[0034] Exemplary embodiments are described herein in detail with reference to the accompanying drawings. The same numbers refer to the same elements throughout the drawings. The following detailed description implements the exemplary embodiments and is not intended to limit the scope of the inventive concept as described in the claims.

[0035] The battery pack of the related art comprises a frame, in order to improve the strength of the frame, beams are arranged at the middle of the frame and the edges of the frame, multiple installation spaces are formed between the beams, and multiple battery cells are arranged in the frame and in each installation space.

[0036] However, when the battery cells on both sides of the beam need to be electrically connected, because the pole of the battery cell is arranged at the lower part of the battery cell, the busbar needs to extend from one side of the beam to the other side through the upper part of the beam. The flow path of the current in the busbar is: first flows upward along the bottom of one side of the busbar, then flows horizontally, and finally flows downward to the bottom of the other side of the busbar. Since the battery cell is usually narrow, and the busbar cannot be affected between adjacent busbars, the part of the busbar opposite to the battery cell on both sides is narrow, which limits the overcurrent area when the current flows upward and downward. This design causes the overcurrent area of the busbar at the connection of the battery cells on both sides to decrease, increases the current density, and thus makes the busbar easy to overheat at these areas, thereby increasing the risk of damage.

[0037] The application provides an electric cell structure, a battery pack and a car. The first circuit board and the second circuit board are electrically connected to the first bus bar and the second bus bar on the same straight line, which facilitates the installation of the first circuit board and the second circuit board. The first circuit board is coincided with the first bus bar, and the second circuit board is staggered with the second bus bar, so that the first circuit board and the second circuit board do not need to bypass the cross beam, and the structural complexity of the first circuit board and the second circuit board is reduced. The first bus bar is arranged on the upper portion of the cross beam, and the first bus bar is electrically connected to the first pole on the upper portion of the first electric cell, so that the first bus bar does not need to extend from one side of the cross beam to the other side of the cross beam through the upper portion of the cross beam. When the current flows on the first bus bar, the current can flow from one side of the first bus bar to the other side of the first bus bar in the horizontal direction directly, and the current does not need to bypass the cross beam when flowing on the first bus bar, so that the current does not flow upward or downward. Since there is no other component affecting the arrangement of the first bus bar on the upper portion of the cross beam, the first bus bar can be arranged wider on the upper portion of the cross beam, so that the current always has a larger current-carrying area when flowing on the first bus bar from the first electric cell on one side of the cross beam to the first electric cell on the other side of the cross beam, so that the first bus bar can carry larger current, thereby reducing the density of the current flowing on the first bus bar, thereby reducing the heat generated by the current passing through, and preventing damage caused by overheating of the first bus bar.

[0038] The technical solutions of the application and how the technical solutions solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described again in some examples. The embodiments of the application will be described below with reference to the drawings.

[0039] In combination with Figure 1 and Figure 2 , the embodiments of the application provide an electric cell structure, comprising:

[0040] A plurality of first electric cells 100 are arranged near the cross beam 810 of the frame 800 of the battery pack. The first electric cell 100 has a first pole 110 on the side wall, and the first pole 110 is arranged away from the bottom wall of the frame 800.

[0041] A plurality of first bus bars 200 are arranged on the upper portion of the cross beam 810. The first bus bar 200 is arranged in the first pole 110, and the first bus bar 200 is electrically connected to the first pole 110.

[0042] In the embodiment, the first electrode post 110 is arranged between the first busbar 200 and the first battery cell 100. The first electrode post 110 can be a positive electrode of the first battery cell 100 or a negative electrode of the first battery cell 100. The first electrode post 110 is square. The first electrode post 110 can also be circular. The first busbar 200 is a copper plate. The first busbar 200 is rectangular. One side of the rectangular first busbar 200 overlaps with the upper part of the first battery cell 100. The other side of the rectangular first busbar 200 overlaps with the upper part of the first battery cell 100. The first busbar 200 has a spacing from the cross beam 810.

[0043] In the application, the first electrode post 110 of the first battery cell 100 is arranged away from the bottom wall of the frame 800. The first busbar 200 is arranged on the upper part of the cross beam 810. The first busbar 200 overlaps with the first electrode post 110. The first busbar 200 can electrically connect the first battery cell 100 on both sides of the cross beam 810 at the position of the first electrode post 110 on the upper part of the first battery cell 100. Therefore, the first busbar 200 does not need to extend from one side of the cross beam 810 to the other side of the cross beam 810 through the upper part of the cross beam 810. When the current flows on the first busbar 200, the current can directly flow from one side of the first busbar 200 to the other side of the first busbar 200 in the horizontal direction. The current does not flow downward or upward on the first busbar 200 in the area where the first battery cell 100 is arranged. The current does not need to bypass the cross beam 810 when flowing. There is no narrow current passing area on the first busbar 200. There is no other component that affects the arrangement of the first busbar 200 on the upper part of the cross beam 810. The first busbar 200 can be arranged wider on the upper part of the cross beam 810. The current always has a large current passing area when flowing on the first busbar 200. Therefore, the first busbar 200 can bear a larger current. The density of the current flowing on the first busbar 200 is reduced. The heat generated by the current passing is reduced. The first busbar 200 is prevented from being damaged due to overheating. The first busbar 200 is arranged on the upper part of the cross beam 810. The first busbar 200 does not need to bypass the cross beam 810. Therefore, the first busbar 200 is convenient to install. The convenience of installing the first busbar 200 is improved.

[0044] In combination with Figure 1 and Figure 2 , the first busbar 200 is provided with a protrusion 210. The protrusion 210 extends towards the lower part of the first battery cell 100.

[0045] In the embodiment, two protrusions 210 are arranged on the first bus bar 200 in the middle of the frame 800, and the two protrusions 210 are arranged opposite to the two first battery cells 100 on the two sides, respectively. One protrusion 210 is arranged on the first bus bar 200 at the edge of the frame 800, and the protrusion 210 is arranged opposite to the first battery cell 100 inside the cross beam 810. The protrusion 210 is arranged integrally with the first bus bar 200, and the protrusion 210 is arranged in a rectangular shape. The rectangular protrusion 210 extends towards the lower part of the first battery cell 100, and the protrusion 210 away from the edge of the first bus bar 200 is located at one third of the total thickness of the cross beam 810.

[0046] In the application, by arranging the protrusion 210, the area of the overlapping part of the first bus bar 200 and the first battery cell 100 is increased, thereby further increasing the current flow area of the current flowing from one first battery cell 100 to another first battery cell 100 on the first bus bar 200, thereby further preventing the first bus bar 200 from overheating, thereby further preventing the first bus bar 200 from being damaged.

[0047] In combination with Figure 1 and Figure 2 , the battery cell structure further comprises:

[0048] a plurality of second battery cells 300, a plurality of second battery cells 300 are arranged between adjacent first battery cells 100, and the plurality of second battery cells 300 are located between adjacent cross beams 810. The second battery cell 300 has a second pole 310 on the side wall thereof, and the second pole 310 is arranged at a position close to the bottom wall of the frame 800;

[0049] a plurality of second bus bars 400, the second bus bar 400 is arranged on the bottom wall of the frame 800, the second bus bar 400 is arranged overlapping the second pole 310, and the second bus bar 400 is electrically connected with the second pole 310.

[0050] In the embodiment, the second battery cell 300 is a square battery; the second pole 310 is arranged between the second bus bar 400 and the second battery cell 300, and the second pole 310 can be the positive pole of the second battery cell 300 or the negative pole of the second battery cell 300. The second pole 310 is square, and the second pole 310 can also be arranged in a circular shape; the second bus bar 400 is a copper plate, and the second bus bar 400 is arranged in a rectangular shape. The rectangular second bus bar 400 is arranged opposite to two adjacent second battery cells 300 at the same time, and the width of the rectangular second bus bar 400 is equal to the width of the two adjacent second battery cells 300. The second bus bar 400 overlaps the lower part of the two adjacent second battery cells 300; and the bottom edge of the second bus bar 400 is connected with the bottom wall of the frame 800.

[0051] In the present application, by setting the mounting direction of the second electric core 300 opposite to the mounting direction of the first electric core 100, and setting the first pole 110 of the first electric core 100 away from the bottom wall of the frame 800, the second electric core 300 can drive the second pole 310 to be set close to the bottom wall of the frame 800. By setting the second bus bar 400 on the bottom wall of the frame 800 and overlapping the second bus bar 400 with the second pole 310, the second bus bar 400 and the second pole 310 can be electrically connected. Since there is no obstruction between the cross beams 810, when the current passes through the second bus bar 400, it has a large flow area, thereby preventing the second bus bar 400 from being damaged due to overheating. The frame 800 can support the second bus bar 400, thereby improving the fixing strength of the second bus bar 400 in the frame 800.

[0052] In combination Figure 1 and Figure 2 The electric core structure further comprises a first circuit board 500, which is arranged on the side of the first bus bar 200 away from the first pole 110. The first circuit board 500 is arranged in overlapping relationship with the first bus bar 200 and is electrically connected to the first bus bar 200.

[0053] In the present embodiment, the first circuit board 500 is a flexible circuit board, which is arranged in a long strip shape and is located in the middle of the first bus bar 200. By setting the first circuit board 500 as a flexible circuit board, the first circuit board 500 can be bent and folded, thereby saving installation space and reducing weight. The first circuit board 500 is generally lighter than a rigid circuit board, which helps to reduce the overall weight of the final product. The first circuit board 500 can also reduce the number of components and assembly steps, thereby reducing the overall cost. The first circuit board 500 has good electrical conductivity and signal transmission performance, and is suitable for high-speed data transmission. The flexibility of the first circuit board 500 makes them easier to install and maintain, especially in situations that require frequent replacement or maintenance. The first circuit board 500 can be designed to adapt to various environmental conditions, including high temperature, low temperature, humidity and chemical corrosion.

[0054] In the present application, by adopting the first circuit board 500 and electrically connecting the first circuit board 500 with the first bus bar 200, the first circuit board 500 can monitor the voltage and temperature of the first battery cell 100 through the first bus bar 200, thereby facilitating the monitoring of the state of the first battery cell 100; by overlapping the first circuit board 500 with the first bus bar 200, the first circuit board 500 can be located on the upper part of the cross beam 810, thereby facilitating the electrical connection between the first circuit board 500 and the first bus bar 200, and without the need to extend the first circuit board 500 from one side of the cross beam 810 through the upper part of the cross beam 810 to the other side of the cross beam 810, thereby facilitating the installation of the first circuit board 500 and reducing the structural complexity of the first circuit board 500.

[0055] In combination Figure 1 and Figure 2 , the battery cell structure further comprises a second circuit board 600, the second circuit board 600 is connected with the first circuit board 500, the second circuit board 600 is arranged along the arrangement direction of the plurality of second battery cells 300, the second circuit board 600 is arranged on the side of the second bus bar 400 away from the bottom wall of the frame 800, and the second circuit board 600 is electrically connected with the second bus bar 400.

[0056] In the present embodiment, the second circuit board 600 is a flexible circuit board, the second circuit board 600 is integrally arranged with the first circuit board 500, the second circuit board 600 overlaps the upper part of the second battery cell 300, and the end part of the second circuit board 600 is provided with a connector for electrical connection with the battery pack, thereby supplying power to the second circuit board 600 and the first circuit board 500; by arranging the second circuit board 600 as a flexible circuit board, the second circuit board 600 can be bent and folded, thereby saving installation space and reducing weight; and the second circuit board 600 is generally lighter than a rigid circuit board, which helps to reduce the overall weight of the final product. The second circuit board 600 can also reduce the number of components and assembly steps, thereby reducing the overall cost. The second circuit board 600 has good electrical conductivity and signal transmission performance, and is suitable for high-speed data transmission. The flexibility of the second circuit board 600 makes them easier to install and maintain, especially in situations that require frequent replacement or repair. The second circuit board 600 can be designed to withstand various environmental conditions, including high temperature, low temperature, humidity, and chemical corrosion.

[0057] In the application, by adopting the second circuit board 600 and electrically connecting the second circuit board 600 with the second bus bar 400, the second circuit board 600 can monitor the voltage and temperature of the second electric core 300 through the second bus bar 400, so as to facilitate the monitoring of the state of the second electric core 300; by arranging the second circuit board 600 on the side of the second bus bar 400 away from the bottom wall of the frame 800, the second circuit board 600 can be staggered with the second bus bar 400, which improves the convenience of electrically connecting the second circuit board 600 and the second bus bar 400, reduces the overall thickness of the second circuit board 600 and the second bus bar 400, thereby reducing the space occupation of the second circuit board 600 and the second bus bar 400, and preventing the second circuit board 600 and the second bus bar 400 from interfering with other components in the frame 800.

[0058] In combination with Figure 1 and Figure 2 , the first circuit board 500 and the second circuit board 600 are integrally formed, and in the embodiment, the first circuit board 500 and the second circuit board 600 are located on the same straight line.

[0059] In the embodiment, the widths of the first circuit board 500 and the second circuit board 600 are the same.

[0060] In the application, by connecting the first circuit board 500 and the second circuit board 600, the first circuit board 500 and the second circuit board 600 can monitor the voltage and temperature of all the first electric cores 100 and the second electric cores 300 in the frame 800, so that the first circuit board 500 and the second circuit board 600 do not need to be electrically connected with the battery pack respectively, which simplifies the structure of the electrical connection between the first circuit board 500 and the second circuit board 600 and the battery pack; by arranging the first circuit board 500 and the second circuit board 600 on the same straight line, the installation of the first circuit board 500 and the second circuit board 600 is further facilitated, so that the first circuit board 500 and the second circuit board 600 do not need to bypass the cross beam 810, thereby simplifying the structure of the first circuit board 500 and the second circuit board 600 and improving the convenience of the installation of the first circuit board 500 and the second circuit board 600.

[0061] In combination with Figure 1 and Figure 2 , the electric core structure further comprises an electric connecting piece 700, the first circuit board 500 is electrically connected with the first bus bar 200 through the electric connecting piece 700, and the second circuit board 600 is electrically connected with the second bus bar 400 through the electric connecting piece 700.

[0062] In the present application, by adopting the arrangement of the electrical connector 700, the electrical connection between the first circuit board 500 and the first bus bar 200 and the electrical connection between the second circuit board 600 and the second bus bar 400 are further facilitated, and the convenience of the electrical connection between the first circuit board 500 and the first bus bar 200 and the electrical connection between the second circuit board 600 and the second bus bar 400 is further improved.

[0063] In combination Figure 1 And Figure 2 The electrical connector 700 includes a nickel sheet, and the nickel sheet is arranged between the first circuit board 500 and the first bus bar 200 and between the second circuit board 600 and the second bus bar 400.

[0064] In the present embodiment, one end of the nickel sheet arranged between the first circuit board 500 and the first bus bar 200 is soldered to the first circuit board 500, and the other end of the nickel sheet is laser-welded to the first bus bar 200, and one end of the nickel sheet arranged between the second circuit board 600 and the second bus bar 400 is soldered to the second circuit board 600, and the other end of the nickel sheet is laser-welded to the second bus bar 400; by using the soldering mode, the process is simple and easy to operate, the connection between the nickel sheet and the flexible circuit board can be quickly realized, and the soldering material is relatively cheap, which can reduce the production cost; by using the laser welding arrangement, the connection quality and stability between the nickel sheet and the first bus bar 200 and the second bus bar 400 can be ensured.

[0065] In the present application, the use of the nickel sheet can improve the connection tightness between the first circuit board 500 and the first bus bar 200 and between the second circuit board 600 and the second bus bar 400, and ensure the stable transmission of electrical signals; the first current plate and the second circuit board 600 connected by the nickel sheet have a compact structure, which is beneficial to save space and adapt to the miniaturization and integration design of the battery pack; the nickel sheet connection process is relatively simple and easy to operate, which helps to improve the production efficiency; the use of the nickel sheet can improve the reliability of the connection and reduce the risk of failure caused by poor contact; compared with other connection methods, the nickel sheet connection can reduce the production cost and improve the economic benefit; the nickel sheet has good corrosion resistance and is suitable for various environments, which enhances the durability of the battery pack.

[0066] The present application also provides a battery pack, which comprises a frame 800 and the cell structure of any one of the above embodiments arranged on the frame 800.

[0067] The specific structure of the cell structure has been described in detail in the above embodiments, and will not be repeated here.

[0068] In a third aspect, the present application provides an automobile, which comprises a vehicle body and the cell structure of any one of the above embodiments arranged on the vehicle body.

[0069] The specific structure of the battery cell structure has been described in detail in the above embodiments, and will not be repeated here.

[0070] The automobile provided by the embodiment of the application is provided with the battery cell structure, the first bus bar 200 and the second bus bar 400 are electrically connected by the first circuit board 500 and the second circuit board 600 located on the same straight line, the first circuit board 500 and the second circuit board 600 are convenient to install, the first circuit board 500 is overlapped with the first bus bar 200, and the second circuit board 600 is staggered with the second bus bar 400, so that the first circuit board 500 and the second circuit board 600 do not need to bypass the cross beam 810, and the structural complexity of the first circuit board 500 and the second circuit board 600 is reduced; the first bus bar 200 is arranged on the upper portion of the cross beam 810, and the first bus bar 200 is electrically connected with the first pole 110 on the upper portion of the first battery cell 100, so that the first bus bar 200 does not need to extend from one side of the cross beam 810 to the other side of the cross beam 810 through the upper portion of the cross beam 810, when the current flows on the first bus bar 200, the current can flow to the other side of the first bus bar 200 from one side of the first bus bar 200 in the horizontal direction, the current does not need to bypass the cross beam 810 when flowing on the first bus bar 200, so that the current does not flow upward or downward, there is no other component affecting the arrangement of the first bus bar 200 on the upper portion of the cross beam 810, so that the first bus bar 200 can be arranged wider on the upper portion of the cross beam 810, so that the current always has a larger current-carrying area when flowing on the first bus bar 200 from the first battery cell 100 on one side of the cross beam 810 to the first battery cell 100 on the other side of the cross beam 810, so that the first bus bar 200 can carry larger current, thereby reducing the density of the current flowing on the first bus bar 200, thereby reducing the heat generated by the current passing through, and preventing damage caused by overheating of the first bus bar 200.

[0071] Finally, it should be noted that: other embodiments of the application will be easily thought of by those skilled in the art after considering the specification and practicing the utility model disclosed herein. The utility model aims to cover any variations, uses or adaptability of the utility model, which follow the general principles of the utility model and include common knowledge or conventional technical means in the technical field of the utility model not disclosed by the utility model, and are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the utility model is only limited by the appended claims.

Claims

1. A battery cell structure, characterized in that, include: Multiple first cells (100) are provided, the first cells (100) are positioned near the crossbeam (810) of the frame (800) of the battery pack, and the first cells (100) have first terminals (110) on their sidewalls, the first terminals (110) being positioned away from the bottom wall of the frame (800). Multiple first busbars (200) are provided on the upper part of the crossbeam (810). The first busbars (200) overlap with the first pole post (110) and are electrically connected to the first pole post (110).

2. The cell structure according to claim 1, characterized in that, The first busbar (200) is provided with a protrusion (210) that extends toward the lower part of the first battery cell (100).

3. The cell structure according to claim 1 or 2, characterized in that, Also includes: Multiple second cells (300) are provided between adjacent first cells (100), and the multiple second cells (300) are located between adjacent crossbeams (810). The sidewall of each second cell (300) has a second pole post (310), which is used to be positioned near the bottom wall of the frame (800). Multiple second busbars (400) are provided on the bottom wall of the frame (800), the second busbars (400) overlap with the second pole (310), and the second busbars (400) are electrically connected to the second pole (310).

4. The cell structure according to claim 3, characterized in that, It also includes a first circuit board (500), which is disposed on the side of the first busbar (200) away from the first pole post (110). The first circuit board (500) overlaps with the first busbar (200) and is electrically connected to the first busbar (200).

5. The cell structure according to claim 4, characterized in that, It also includes a second circuit board (600), which is connected to the first circuit board (500). The second circuit board (600) is arranged along the arrangement direction of the plurality of second cells (300). The second circuit board (600) is located on the side of the second busbar (400) away from the bottom wall of the frame (800). The second circuit board (600) is electrically connected to the second busbar (400).

6. The cell structure according to claim 5, characterized in that, The first circuit board (500) and the second circuit board (600) are integrally formed.

7. The cell structure according to claim 5 or 6, characterized in that, It also includes an electrical connector (700), through which the first circuit board (500) and the first busbar (200) are electrically connected, and through which the second circuit board (600) and the second busbar (400) are electrically connected.

8. The cell structure according to claim 7, characterized in that, The electrical connector (700) includes a nickel sheet, which is disposed between the first circuit board (500) and the first busbar (200), and between the second circuit board (600) and the second busbar (400).

9. A battery pack, characterized in that, It includes a frame (800) and a cell structure disposed on the frame (800) as described in any one of claims 1-8.

10. A car, characterized in that, It includes a vehicle body and a battery cell structure as described in any one of claims 1-8 disposed on the vehicle body.

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