CN219843116U - Fixed structures, batteries and electrical devices - Google Patents

Abstract

The utility model provides a fixing structure, a battery and an electric device, wherein the fixing structure comprises: the conducting strip is used for being electrically connected with the pole of the battery cell; the bracket is connected with the conductive sheet; and the input end of the flexible circuit board is electrically connected with the conducting strip, and the output end of the flexible circuit board is connected with the bracket. According to the fixing structure, the battery and the power utilization device, the output end of the flexible circuit board can be kept fixed with the conducting strip and the support, the stability of the position of the output end of the flexible circuit board can be guaranteed, so that the output end of the flexible circuit board is connected with an external circuit conveniently, the clamping position is not required to be arranged on the end plate, the size of the end plate can be prevented from being occupied to a certain extent, the end plate structure is simplified, the thickness of the end plate is smaller, the structure is simpler, and the size of the battery is reduced.

Description

Fixed structures, batteries and electrical devices

Technical field

The present application belongs to the field of battery technology, and more specifically, relates to a fixed structure, a battery and an electrical device.

Background technique

In batteries, the module plug-in usually uses a flexible circuit board. The input end of the flexible circuit board is electrically connected to the pole, and the output end of the flexible circuit board is fixed by snapping with the end plate of the battery. When designing the end plate, it is necessary to design a clamping position on the end plate to hold the output end of the flexible circuit board to ensure the stability of the output end position of the flexible circuit board. However, the method of fixing the flexible circuit board by setting a clamping position on the end plate is The output mode will make the end plate structure complex, which is not conducive to end plate processing, and will occupy the end plate size and increase the battery volume.

Utility model content

The purpose of the embodiments of the present application is to provide a fixed structure to solve the technical problem in the prior art that a clamping position needs to be designed on the end plate to cooperate with the output end of the flexible circuit board.

In the first aspect, embodiments of the present application provide a fixed structure. The fixed structure includes:

Conductive sheet, used for electrical connection with the poles of the battery cells;

a bracket connected to the conductive sheet; and,

Flexible circuit board, the input end of the flexible circuit board is electrically connected to the conductive sheet, and the output end of the flexible circuit board is connected to the bracket.

By connecting the bracket to the conductive sheet, the positions of the bracket and the conductive sheet can be kept stable; by connecting the output end of the flexible circuit board to the bracket, the output end of the flexible circuit board can be fixed to the conductive sheet and bracket, thus ensuring the flexible circuit The position of the output end of the board is stable to facilitate the connection between the output end of the flexible circuit board and the external circuit. In this way, there is no need to set a clamping position on the end plate, which can avoid occupying the end plate size to a certain extent and simplify the end plate structure, making the end plate thickness smaller and the structure simpler, thereby helping to reduce the size of the battery.

In one embodiment, the fixed structure further includes an output terminal electrically connected to the output end of the flexible circuit board and a support plate supporting the output terminal, and the support plate is connected to the bracket.

By adopting the above technical means, the output terminal can facilitate the connection of external circuits; the support plate is connected to the bracket, which can keep the position of the output terminal and the output end of the flexible circuit board stable.

In one embodiment, the support plate is provided with a first hole, and the bracket is provided with a first connecting column, and the first connecting column is plugged into the first hole; or, the bracket is provided with a first hole, and the support is A first connecting post is provided on the board, and the first connecting post is mated and plugged into the first hole.

By using the above technical means, after the first connecting post is inserted into the first hole, the movement of the output terminal in the direction parallel to the bracket can be restricted to a certain extent, so that the position of the output terminal remains stable.

In one embodiment, the support plate and the bracket are riveted and fixed through the first connecting column.

By using the above technical means, the support plate and the bracket can be locked to maintain the relative stability of the positions of the output terminal and the bracket without the need to use other fasteners.

In one embodiment, the support plate is provided with a second hole. The first hole and the second hole are respectively located at both ends of the support plate along the length direction. The bracket is provided with a second connecting column, and the second connecting column matches Plug into the second hole; or, the bracket is provided with a second hole, the first hole and the second hole are respectively located at both ends of the support plate along the length direction, the support plate is provided with a second connecting column, The two connecting posts are matched and plugged into the second hole.

By adopting the above technical means, the forces at both ends of the support plate can be balanced, and the stability of the positions of the support plate and the output terminal can be improved.

In one embodiment, the first hole position is a circular hole; the second hole position is a strip hole, and the strip hole is arranged along the length direction of the support plate.

By using the above technical means, the circular hole can restrict the sliding between the support plate and the bracket along the X-axis or Y-axis; the strip hole can restrict the sliding between the support plate and the bracket along the Leave a certain margin in the Y-axis direction to reduce the accuracy requirements of processing and assembly.

In one embodiment, the support plate and the bracket are riveted and fixed through the second connecting column.

By using the above technical means, the support plate and the bracket can be locked to maintain the relative stability of the positions of the output terminal and the bracket without the need to use other fasteners.

In one embodiment, the conductive sheet is provided with a third hole, and the bracket is provided with a third connecting post, and the third connecting post is adapted to be plugged into the third hole.

By using the above technical means, after the third connecting post is inserted into the third hole, the movement of the bracket in the direction parallel to the conductive sheet can be restricted to a certain extent, so that the position of the bracket remains stable.

In one embodiment, the conductive sheet and the bracket are riveted and fixed through a third connecting post.

By using the above technical means, the bracket and the conductive sheet can be locked, and the positions of the bracket and the conductive sheet can be kept relatively stable without using other fasteners.

In one embodiment, there are multiple conductive sheets. Some of the conductive sheets are disposed on one side of the flexible circuit board along the width direction, and another part of the conductive sheets are disposed on the other side of the flexible circuit board along the width direction. The flexible circuit board is along the width direction. Input terminals are provided on opposite sides in the width direction, and the plurality of input terminals correspond to the plurality of conductive sheets one by one.

By using the above technical means, the flexible circuit board can be connected to the conductive sheets on both sides, so that the flexible circuit board can electrically connect the poles of the two rows of battery cells and improve the position stability of the flexible circuit board.

In one embodiment, there are multiple third connection posts, and the plurality of third connection posts are arranged on opposite sides of the flexible circuit board along the width direction. The plurality of third connection posts and the plurality of third holes are one by one. correspond.

By using the above technical means, the bracket can be connected to the conductive sheets on both sides, so that the forces on both ends of the bracket are balanced and the stability of the bracket is improved.

In one embodiment, the flexible circuit board and the conductive sheet are located on the same side of the bracket, and a welding pad for welding to the pole is protruded from the side of the conductive sheet facing the bracket.

By adopting the above technical means, the conductive sheet and the pole can be easily welded and fixed to maintain the stability of the position of the conductive sheet on the battery cell.

In one embodiment, the bracket is provided with a relief hole at a position corresponding to the welding pad, and the welding pad is matched and placed in the relief hole.

By using the above technical means, it is possible to prevent the bracket from interfering with the welding of the conductive sheet and the pole to a certain extent, and the welding disk can be placed in the avoidance hole to limit the position of the bracket and the conductive sheet, improving the accuracy and stability of the position of the bracket and the conductive sheet. .

In one embodiment, the fixed structure further includes a welding part, and the welding part is electrically connected to the input end of the conductive sheet and the flexible circuit board.

By using the above technical means, the conductive sheet can be connected to the input end of the flexible circuit board.

In one embodiment, the bracket is a plastic part; and/or the bracket is a plate part.

By using the above technical means, the insulation of the bracket can be ensured, and the processing of the bracket is facilitated, and the bracket, the conductive sheet and the support plate can be fixed by hot riveting. By using plates, it can help to reduce the thickness of the bracket and reduce the height space occupied by the bracket. .

In a second aspect, embodiments of the present application further provide a battery, including a plurality of battery cells and the fixing structure in any of the above embodiments.

By using the above technical means, the poles of the battery cells can be connected to the conductive sheet and the flexible circuit board to facilitate the collection of battery cell data; it can also facilitate the fixation of the output end position of the flexible circuit board and simplify the end plate. The design can use conductive sheets and brackets to fix the output end of the flexible circuit board to facilitate modular assembly of the battery, making the assembly of the battery more convenient.

In a third aspect, embodiments of the present application further provide an electrical device, including the battery in any of the above embodiments.

By adopting the above technical means, it is possible to facilitate the fixation of the output end of the flexible circuit board in the battery, simplify the design of the battery end plate, contribute to the modular assembly of the battery, and reduce costs.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the purpose of the present application. For some embodiments, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

Figure 2 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

Figure 3 is a schematic three-dimensional structural diagram of the fixed structure and battery cells provided by the embodiment of the present application;

Figure 4 is an enlarged view of point A in Figure 3;

Figure 5 is a schematic three-dimensional structural diagram of the bracket, conductive sheet and flexible circuit board in Figure 3;

Figure 6 is a schematic three-dimensional structural diagram of part of the bracket connected to the conductive sheet and the flexible circuit board in Figure 5;

Figure 7 is an exploded view of the bracket, conductive sheet and flexible circuit board in Figure 6;

Figure 8 is a schematic three-dimensional structural diagram of a bracket provided by an embodiment of the present application;

Figure 9 is a schematic three-dimensional structural diagram of the conductive sheet provided by the embodiment of the present application;

Figure 10 is a partial structural schematic diagram of a flexible circuit board provided by an embodiment of the present application.

Among them, each figure in the figure is marked with:

1000-vehicle; 100-battery; 200-controller; 300-motor;

10-Bracket; 101-Escape hole; 11-First connecting column; 12-Second connecting column; 13-Third connecting column;

20-conductive sheet; 201-third hole position; 21-soldering pad;

30-Flexible circuit board; 31-Support plate; 3101-First hole position; 3102-Second hole position; 32-Output terminal; 33-Welding parts;

40-battery cell;

50-box; 51-first part; 52-second part.

Detailed ways

The embodiments of the technical solution of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solution of the present application more clearly, and are therefore only used as examples and cannot be used to limit the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field belonging to this application; the terms used herein are for the purpose of describing specific embodiments only and are not intended to be used in Limitation of this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

In the description of the embodiments of this application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying the relative importance or implicitly indicating the quantity or specificity of the indicated technical features. Sequence or priority relationship. In the description of the embodiments of this application, "plurality" means two or more, unless otherwise explicitly and specifically limited.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of this application, the term "and/or" is only an association relationship describing associated objects, indicating that there can be three relationships, such as A and/or B, which can mean: A exists alone, and A exists simultaneously and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

In the description of the embodiments of this application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to It is more than two pieces (including two pieces).

In the description of the embodiments of this application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right" and "vertical" The orientation or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for the convenience of describing the embodiments of the present application and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the implementation of the present application. Example limitations.

In the description of the embodiments of this application, unless otherwise clearly stated and limited, technical terms such as "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. It can be disassembled and connected, or integrated; it can also be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

At present, judging from the development of the market situation, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. As battery application fields continue to expand, its market demand is also expanding.

During the signal collection process of the battery, a flexible circuit board will be installed inside the battery. The flexible circuit board is connected to the conductive sheet, and the conductive sheet is connected to the pole of the battery cell to obtain the signal of the battery cell. The output end of the flexible circuit board needs to be connected to When connecting to an external circuit, the flexible circuit board is made of soft material, and the connection part is usually not easy to maintain stability. During the use of the battery, it is easy to vibrate or shift, which in turn affects the stability of the connection between the flexible circuit board and the external circuit.

In related technologies, battery manufacturers will design clamping positions on the end plates of the battery, and clamp the output end of the flexible circuit board to the clamping positions to fix the output end of the flexible circuit board. When the external circuit is connected to the flexible circuit board After the output terminal is connected, the connection position can remain stable with the end plate. However, the method of setting clamping positions on the end plate to fix the output end of the flexible circuit board will, on the one hand, increase the size of the end plate, which will in turn lead to an increase in the volume of the battery. On the other hand, it will make the structure of the end plate more complex. This increases the processing difficulty of the end plate, thereby increasing the cost of the battery.

Based on the above considerations, some embodiments of the present application provide a fixed structure. The fixed structure is electrically connected to the input end and pole of the flexible circuit board through a conductive sheet to transmit the signal of the battery cell, and is connected to the conductive sheet and the flexible circuit through a bracket. At the output end of the board, after the conductive sheet and the pole are fixed, the positions of the output end of the flexible circuit board and the pole can be kept stable, so that the location where the output end of the flexible circuit board is connected to the external circuit can be kept stable. It can eliminate the clamping position on the end plate, simplify the end plate structure, reduce the size of the end plate, and reduce the processing difficulty and cost of the end plate.

For the convenience of explanation in the following embodiments, an electric device 1000 according to an embodiment of the present application is used as an example.

Please refer to FIG. 1 , which is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application. The battery 100 is disposed inside the vehicle 1000 , and the battery 100 may be disposed at the bottom, head, or tail of the vehicle 1000 . The battery 100 may be used to power the vehicle 1000 , for example, the battery 100 may serve as an operating power source for the vehicle 1000 . The vehicle 1000 may also include a controller 200 and a motor 300 . The controller 200 is used to control the battery 100 to provide power to the motor 300 , for example, for starting, navigating and driving the vehicle 1000 .

In some embodiments of the present application, the battery 100 can not only be used as an operating power source of the vehicle 1000, but also can be used as a driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

Please refer to FIG. 2 , which is an exploded schematic diagram of the battery 100 provided by the embodiment of the present application. The battery 100 includes a fixed structure, a box body 50 and battery cells 40 . The battery cells 40 are accommodated in the box body 50 . Among them, the fixed structure is used to connect with the battery cells 40 . The fixed structure can be completely placed in the accommodation space of the box 50 , or can be partially placed in the accommodation space of the box 50 .

The box 50 is used to provide an accommodation space for the battery cells 40 , and the box 50 can adopt a variety of structures. In some embodiments, the box 50 may include a first part 51 and a second part 52 , the first part 51 and the second part 52 covering each other, the first part 51 and the second part 52 jointly defining a space for accommodating the battery cell 40 of accommodation space. The second part 52 may be a hollow structure with one end open, and the first part 51 may be a plate-like structure. The first part 51 covers the opening side of the second part 52 so that the first part 51 and the second part 52 jointly define a receiving space. ; The first part 51 and the second part 52 may both be hollow structures with one side open, and the opening side of the first part 51 is covered with the opening side of the second part 52. Of course, the box 50 formed by the first part 51 and the second part 52 can be in various shapes, such as cylinder, rectangular parallelepiped, etc.

In some embodiments, box 50 may be part of the chassis structure of vehicle 1000 . For example, portions of the box 50 may become at least part of the floor of the vehicle 1000 , or portions of the box 50 may become at least part of the cross members and longitudinal members of the vehicle 1000 .

Of course, in some embodiments, the battery 100 may not include the box 50 , but instead, multiple battery cells 40 may be electrically connected, integrated through necessary connection structures, and then assembled into the vehicle 1000 .

In the battery 100 , there may be a plurality of battery cells 40 , and the plurality of battery cells 40 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells 40 are connected in series and in parallel. The plurality of battery cells 40 can be directly connected in series, parallel, or mixed together, and then the entire battery cell 40 is accommodated in the box 50 . Of course, the battery 100 can also be composed of multiple battery cells 40 that are first connected in series, parallel, or mixed to form a battery module, and then the multiple battery modules are connected in series, parallel, or mixed to form a whole, and are accommodated in the box 50 . The battery 100 may also include other functional components. For example, the battery 100 may further include a bus for realizing electrical connections between multiple battery cells 40 .

Wherein, each battery cell 40 can be a secondary battery or a primary battery, wherein the secondary battery refers to a battery cell 40 that can be charged to activate the active material and continue to be used after the battery cell 40 is discharged. The battery refers to the battery cell 40 that cannot be activated by charging to activate the active material after the electric energy of the battery cell 40 is exhausted; the battery cell 40 can also be a lithium-ion battery, a sodium-ion battery, or a sodium-lithium-ion battery. , lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc., but are not limited to these. The battery cell 40 may be a cylindrical battery cell, a prismatic battery cell, a soft pack battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, and a multi-prism battery cell. , the polygonal prism battery is, for example, a hexagonal prism battery, etc., and is not particularly limited in this application.

For convenience of explanation, the following embodiments will be described using the fixed structure of an embodiment of the present application.

Referring to Figures 3 to 5, a fixed structure provided by an embodiment of the present application includes a bracket 10, a conductive sheet 20 and a flexible circuit board 30; the conductive sheet 20 is used to electrically connect with the poles of the battery cells 40, and the conductive sheet 20 is The bracket 10 is connected; the input end of the flexible circuit board 30 is electrically connected to the conductive sheet 20 , and the output end of the flexible circuit board 30 is connected to the bracket 10 .

It should be noted that the flexible circuit board 30 may be, but is not limited to, a signal acquisition circuit board; the input end of the flexible circuit board 30 refers to the part where the flexible circuit board 30 is electrically connected to the conductive sheet 20. The input end of the flexible circuit board 30 may have One or more input terminals of the flexible circuit board 30 may be, but are not limited to, pads or gold fingers. The output end of the flexible circuit board 30 refers to the part where the flexible circuit board 30 is connected to an external circuit. The output end of the flexible circuit board 30 may be, but is not limited to, a cable holder or a plurality of golden fingers. When the flexible circuit board 30 is a signal collection circuit board, the signal of the battery cell 40 is transmitted sequentially along the direction of the conductive sheet 20 , the input end of the flexible circuit board 30 , the output end of the flexible circuit board 30 , and the external circuit.

The conductive sheet 20 can be, but is not limited to, aluminum bar, copper bar or nickel sheet. The conductive sheet 20 is used to connect with the pole. On the one hand, it is beneficial to increase the contact area and reduce resistance; on the other hand, it has a certain structural strength. Helps improve stability.

The bracket 10 may be, but is not limited to, a plate member, and the bracket 10 may be an insulating member. In this way, the risk of short circuit between the output end of the flexible circuit board 30 and the conductive sheet 20 can be reduced, and the reliability of the battery 100 can be improved. Of course, in other embodiments, the bracket 10 can also be a conductive component. In this case, an insulating structure can be provided between the output end of the flexible circuit board 30 and the bracket 10 to reduce the contact between the output end of the flexible circuit board 30 and the conductive component. The risk of short circuit of chip 20 is improved and the reliability of battery 100 is improved.

By connecting the bracket 10 to the conductive sheet 20, the positions of the bracket 10 and the conductive sheet 20 can be kept stable; by connecting the output end of the flexible circuit board 30 to the bracket 10, the output end of the flexible circuit board 30 is connected to the conductive sheet 20 and The bracket 10 remains fixed, which can ensure the stability of the output end of the flexible circuit board 30 and facilitate the connection between the output end of the flexible circuit board 30 and an external circuit. In this way, there is no need to set a clamping position on the end plate, which can avoid occupying the end plate size to a certain extent and simplify the end plate structure, making the end plate thickness smaller and the structure simpler, thereby helping to reduce the volume of the battery 100 and reduce the cost of the battery. 100 cost.

In addition, since the bracket 10, the conductive sheet 20 and the flexible circuit board 30 are connected to each other, the three can be assembled first and then assembled on the battery cell 40 as a module, which helps to realize the modular assembly of the battery 100, thereby effectively The assembly efficiency of the battery 100 is improved.

In one embodiment of the present application, please refer to FIGS. 4 to 6 , the fixed structure also includes an output terminal 32 electrically connected to the output end of the flexible circuit board 30 and a support plate 31 supporting the output terminal 32 . The support plate 31 is connected to the bracket. 10 connected.

The output terminal 32 can be fixed on the support plate 31 by pasting, screwing or snapping, and the output end of the flexible circuit board 30 is electrically connected to the output terminal 32 . The output terminal 32 can be, but is not limited to, a cable holder, which can facilitate quick connection with an external circuit.

When the bracket 10 is a conductive component, the support plate 31 can be an insulating plate. In this way, the risk of short circuit between the output end of the flexible circuit board 30 and the conductive sheet 20 can be reduced, and the reliability of the battery 100 can be improved.

By using the output terminal 32 to be connected to the flexible circuit board 30, the connection of external circuits can be facilitated; the support plate 31 is connected to the bracket 10, so that the position of the output terminal 32 can be kept stable.

In one embodiment of the present application, please refer to Figure 6, Figure 7 and Figure 10. The support plate 31 is provided with a first hole 3101, the bracket 10 is provided with a first connecting column 11, and the first connecting column 11 is plugged into at the first hole 3101; or, the bracket is provided with a first hole, the support plate is provided with a first connecting post, and the first connecting post is plugged into the first hole.

The first hole 3101 may be a circular hole, a square hole, a strip hole, etc., and the first connecting post 11 may be a cylinder, a prism, etc. When the first connecting post 11 is provided on the bracket 10 and the first hole 3101 is provided on the support plate 31 , the first connecting post 11 may be made of, but is not limited to, the same material as the bracket 10 . It is an integrally formed structure with the bracket 10; one support plate 31 can have one or more first holes 3101, the number of the first connecting posts 11 can be one or more, and the first connecting posts 11 can be connected with the first Hole positions 3101 correspond one to one. When the first connecting column is provided on the support plate and the first hole is provided on the bracket, the first connecting column may be, but is not limited to, made of the same material as the support plate. The first connecting column may be, but is not limited to, integral with the support plate. Molding structure: One bracket may have one or more first holes, the number of first connecting posts may be one or more, and the first connecting posts may correspond to the first holes one by one.

Through the first connecting post 11 mating with the first hole 3101, after the first connecting post 11 is fitted and inserted into the first hole 3101, the output terminal 32 can be limited to a certain extent in the direction of the parallel bracket 10 (XY in Figure 3 plane), so that the position of the output terminal 32 remains stable.

In one embodiment of the present application, please refer to FIG. 6 , FIG. 7 and FIG. 8 , the support plate 31 and the bracket 10 are riveted and fixed through the first connecting column 11 .

It can be understood that the end of the first connecting post 11 away from the bracket 10 passes through the first hole 3101. During riveting, the part of the first connecting post 11 that passes through the first hole 3101 is compressed and becomes thicker until the first connecting post 11 becomes thicker. The diameter of the part of 11 that passes through the first hole 3101 is larger than the diameter of the first hole 3101 , thereby restricting the support plate 31 from loosening from the bracket 10 .

By riveting the first connecting column 11, the support plate 31 and the bracket 10 can be locked, keeping the positions of the output terminal 32 and the bracket 10 relatively stable without using other fasteners.

In one embodiment of the present application, please refer to Figures 6, 7 and 8. The support plate 31 is provided with a second hole 3102. The first hole 3101 and the second hole 3102 are respectively located along the length of the support plate 31. direction (the Y-axis direction in Figure 8), the bracket 10 is provided with a second connecting column 12, and the second connecting column 12 is plugged into the second hole 3102; or, the bracket is provided with a second hole, The first hole position and the second hole position are respectively located at both ends of the support plate along the length direction. The support plate is provided with a second connecting column, and the second connecting column is plugged into the second hole position.

The second hole position 3102 may be a circular hole, a square hole, a strip hole, etc., and the second connecting post 12 may be a cylinder, a prism, etc. When the second connecting post 12 is provided on the bracket 10 and the second hole 3102 is provided on the support plate 31 , the second connecting post 12 may be made of, but is not limited to, the same material as the bracket 10 . It is an integrally formed structure with the bracket 10; one support plate 31 can have one or more second holes 3102, the number of the second connecting posts 12 can be one or more, and the second connecting posts 12 can be connected with the second The hole positions correspond one to one. When the second connecting column is provided on the support plate and the second hole is provided on the bracket, the second connecting column may be, but is not limited to, made of the same material as the support plate. The second connecting column may be, but is not limited to, integral with the support plate. Molding structure: One bracket may have one or more second holes, the number of second connecting posts may be one or more, and the second connecting posts may correspond to the second holes one-to-one.

By inserting the second connecting post 12 into the second hole 3102, the movement of the output terminal 32 in the direction parallel to the bracket 10 (XY plane in FIG. 3) can be further restricted, so that the position of the output terminal 32 remains stable.

In one embodiment, please refer to FIG. 7 and FIG. 10 , the first hole 3101 is a circular hole; the second hole 3102 is a strip hole, and the strip hole is arranged along the length direction of the support plate 31 .

It should be noted that the first hole 3101 may be, but is not limited to, adapted to the cross-sectional size of the first connecting post 11 , and the length of the second hole 3102 is greater than the diameter of the second connecting post 12 .

The first hole 3101 adopts a circular hole. When the first connecting post 11 is inserted into the first hole 3101, it will not restrict the rotation of the support plate 31 and the bracket 10; the second hole 3102 adopts a strip hole, and the second connecting post 11 does not restrict the rotation of the support plate 31 and the bracket 10. 12 is inserted into the second hole 3102, and when the first connecting column 11 is inserted into the first hole 3101, the rotation of the support plate 31 and the bracket 10 will be restricted. When there is a processing deviation in the Y-axis direction in the position of the first connecting column 11 and the second connecting column 12, the strip hole can be compatible with the deviation, so as to reduce the processing accuracy requirements, facilitate assembly, and ensure the assembly of flexible circuit boards to a certain extent. 30 and output terminal 32 position accuracy.

In one embodiment, the support plate 31 and the bracket 10 are riveted and fixed through the second connecting column 12 .

It can be understood that the end of the second connecting post 12 away from the bracket 10 passes through the second hole 3102. During riveting, the part of the second connecting post 12 that passes through the second hole 3102 is compressed and becomes thicker until the second connecting post 12 becomes thicker. The diameter of the part of 12 that passes through the second hole 3102 is larger than the width of the second hole 3102, thereby restricting the support plate 31 from loosening from the bracket 10.

By riveting the second connecting column 12, the support plate 31 and the bracket 10 can be locked to maintain the relative stability of the positions of the output terminal 32 and the bracket 10 without using other fasteners.

In one embodiment of the present application, please refer to Figures 6, 7 and 9. The conductive sheet 20 is provided with a third hole 201, the bracket 10 is provided with a third connecting post 13, and the third connecting post 13 is plugged in. At the third hole position 201.

The third hole 201 may be a circular hole, a square hole, a strip hole, etc., and the third connecting post 13 may be a cylinder, a prism, etc. The third connecting column 13 may be, but is not limited to, made of the same material as the bracket 10 . The third connecting column 13 may be, but is not limited to, an integrally formed structure with the bracket 10 . One support plate 31 may have one or more third holes 201 . , the number of the third connecting posts 13 may be one or more, and the third connecting posts 13 may correspond to the third holes 201 one-to-one.

Through the third connecting post 13 cooperating with the third hole 201, after the third connecting post 13 is inserted into the third hole 201, the bracket 10 can be restricted to a certain extent in the direction parallel to the conductive sheet 20 (XY in Figure 3 plane) movement so that the position of the bracket 10 remains stable.

In one embodiment of the present application, the conductive sheet 20 and the bracket 10 are riveted and fixed through the third connecting column 13 .

It can be understood that the end of the third connecting column 13 away from the bracket 10 penetrates the third hole 201. During riveting, the part of the third connecting column 13 that penetrates the third hole 201 is compressed and becomes thicker until the third connecting column 13 passes through the third hole 201. The diameter of the part of 13 that passes through the third hole 201 is larger than the diameter of the third hole 201 , thereby restricting the conductive sheet 20 from loosening from the bracket 10 .

By riveting the third connecting column 13, the bracket 10 and the conductive sheet 20 can be locked, keeping the positions of the bracket 10 and the conductive sheet 20 relatively stable without using other fasteners.

In one embodiment of the present application, please refer to FIGS. 3 to 5 . There are multiple conductive sheets 20 . Some of the conductive sheets 20 are disposed on one side of the flexible circuit board 30 along the width direction Y, and the other conductive sheets 20 are disposed on one side of the flexible circuit board 30 along the width direction Y. On the other side of the flexible circuit board 30 along the width direction Y, the flexible circuit board 30 is provided with input terminals on opposite sides along the width direction Y. The plurality of input terminals correspond to the plurality of conductive sheets 20 one by one.

The conductive sheets 20 may be arranged in two rows. The two rows of conductive sheets 20 are arranged side by side. The two rows of conductive sheets 20 are respectively located on opposite sides of the flexible circuit board 30 along the width direction Y. Each conductive sheet 20 is adjacent to the flexible circuit board 30 . The input terminals are electrically connected.

The number of conductive sheets 20 in each column of conductive sheets 20 may be one or more, and each column of conductive sheets 20 may be arranged along the length direction of the flexible circuit board 30 (the X-axis direction in FIG. 3 ). The flexible circuit board 30 is provided with two rows of input terminals. The two rows of input terminals are respectively located on both sides of the flexible circuit board 30 along the width direction (the Y-axis direction in Figure 3). Each input terminal is electrically connected to the adjacent conductive sheet 20. .

By electrically connecting the conductive sheets 20 on both sides to the input terminals of the flexible circuit board 30 , the flexible circuit board 30 can electrically connect the poles of the two rows of battery cells 40 , thereby improving the positional stability of the flexible circuit board 30 .

In one embodiment of the present application, please refer to FIG. 4 , FIG. 6 and FIG. 7 , the number of the third connecting pillars 13 is multiple, and the plurality of third connecting pillars 13 are arranged on two opposite sides of the flexible circuit board 30 along the width direction. On the other hand, the plurality of third connecting posts 13 correspond to the plurality of third holes 201 in one-to-one correspondence.

In other words, the bracket 10 spans the flexible circuit board 30. The third connecting posts 13 are provided at both ends of the bracket 10 in the length direction (the Y-axis direction in Figure 3). The conductive sheets 20 at both ends of the bracket 10 are provided with third holes. Position 201, the third connecting posts 13 at both ends of the bracket 10 correspond to the third hole positions 201 on the two conductive sheets 20 in a one-to-one correspondence.

The third connecting posts 13 at both ends of the bracket 10 are respectively inserted into the third holes 201 on the two conductive sheets 20 to connect the bracket 10 to the two conductive sheets 20 so that the forces on both ends of the bracket 10 are balanced and the bracket 10 is improved. stability.

In one embodiment of the present application, please refer to Figures 4, 6 and 9. The flexible circuit board 30 and the conductive sheet 20 are located on the same side of the bracket 10. The conductive sheet 20 has a protrusion on the side facing the bracket 10 for connecting with the pole. Welding pad 21 for column phase welding.

The shape of the welding pad 21 can be adapted to the top surface of the pole, and the welding pad 21 and the conductive sheet 20 can be an integrated structure. For example, the welding pad 21 can be formed by punching a pit in the middle of the conductive sheet 20, and the welding pad 21 on each conductive sheet 20 The number can be one or more.

By arranging the welding pad 21 on the side of the conductive sheet 20 close to the bracket 10, when the welding pad 21 is welded to the pole, the conductive sheet 20 is fixed to the pole to maintain the stability of the position of the conductive sheet 20 on the battery cell 40. The bracket 10 Located on the lower side of the conductive sheet 20, it helps to reduce the space occupied by the bracket 10 in the height direction of the pole.

In one embodiment of the present application, please refer to Figures 6 to 8. The bracket 10 is provided with a relief hole 101 corresponding to the position of the welding pad 21. The welding pad 21 is matched with the relief hole 101. The welding pad 21 is used to connect with the welding pad 21. The poles pass through the escape holes 101 and are welded together.

In some embodiments, the welding pad 21 passes through the escape hole 101 and is welded to the pole. The inner wall of the escape hole 101 can be partially or completely attached to the outer circumferential surface of the welding pad 21, which can play a role during assembly. A certain positioning effect facilitates improving the alignment accuracy of the bracket 10 and the conductive sheet 20 . The shape of the relief hole 101 and the shape of the welding pad 21 may be the same or different. For example, when the welding pad 21 is circular, the relief hole 101 may be circular, square or regular hexagonal. A notch can also be provided on one side of the relief hole 101 so that the relief hole 101 has a certain room for expansion so that the welding pad 21 can be placed in the relief hole 101 .

Of course, in other embodiments, the pole may also be inserted through the escape hole 101 and welded to the welding pad 21 .

When the welding pad 21 and the pole are welded, the escape hole 101 can prevent the bracket 10 from interfering with the welding of the welding pad 21 and the pole to a certain extent, and the welding pad 21 can be placed in the escape hole 101 to limit the bracket 10 and the conductive sheet 20 position to improve the accuracy and stability of the position of the bracket 10 and the conductive sheet 20.

In one embodiment of the present application, please refer to FIGS. 5 to 7 , the fixed structure further includes a welding member 33 , and the welding member 33 electrically connects the conductive sheet 20 and the input end of the flexible circuit board 30 .

The welding part 33 may be a conductive plate or a wire, etc. The welding part 33 may be disposed on the side of the flexible circuit board 30 and the conductive sheet 20 facing away from the bracket 10 , so that it can be welded from the side of the flexible circuit board 30 away from the bracket 10 Part 33 is welded to facilitate assembly. Of course, in other embodiments, the welding member 33 may be disposed on the side of the flexible circuit board 30 and the conductive sheet 20 facing the bracket 10 .

The welding member 33 connects the conductive sheet 20 and the input end of the flexible circuit board 30 , thereby enabling connection and conduction between the conductive sheet 20 and the flexible circuit board 30 .

In one embodiment of the present application, please refer to FIGS. 3 to 5 , the bracket 10 is a plastic part; and/or the bracket 10 is a plate part.

It should be noted that the bracket 10 may be made of thermoplastic plastic, or may be a combination of part thermosetting material and part thermoplastic material. For example, the first connecting column 11 , the second connecting column 12 and the third connecting column 13 are made of thermoplastic material.

The use of plastic parts can ensure the insulation of the bracket 10 to a certain extent, facilitate the processing of the bracket 10, and facilitate the fixing of the bracket 10 to the conductive sheet 20 and the support plate 31 through hot riveting. The use of a plate structure helps to reduce the space occupied by the bracket 10 in the height direction of the pole (Z-axis direction in Figure 3).

An embodiment of the present application also provides a battery, which includes a plurality of battery cells 40 and a fixed structure as in any of the above embodiments. The poles of the battery cells 40 are electrically connected to the conductive sheet 20 .

Alternatively, the conductive sheet 20 and the poles of the battery cells 40 may be fixed by welding, so that the connection between the conductive sheet 20 and the poles can be stabilized.

The battery cells 40 may be square battery cells or circular battery cells, etc., and the plurality of battery cells 40 may be connected in parallel, in series, or in a hybrid manner.

The poles of the battery cell 40 are connected to the flexible circuit board 30 through the conductive sheet 20, so as to facilitate the collection of data of the battery cell 40; and it can facilitate the fixation of the output end position of the flexible circuit board 30, simplifying the design of the end plate. The conductive sheet 20 and the bracket 10 can be used to fix the output end of the flexible circuit board 30 to facilitate modular assembly of the battery, simplify the assembly process of the flexible circuit board 30, and make the assembly of the battery more convenient.

An embodiment of the present application also provides an electrical device, including the battery described in any of the above embodiments.

The electrical device may be, but is not limited to, a vehicle 1000, a portable device, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle 1000 may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range-extended vehicle. Spacecraft include airplanes, rockets, space shuttles, spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and planers, etc.

In addition to the above-mentioned battery 100, the electrical device generally also includes other structures. For example, when the electrical device is a vehicle 1000, in addition to the battery 100, it often also includes a motor 300, a controller 200 and other equipment.

By adopting the above fixing structure, the output end of the flexible circuit board 30 in the battery can be easily fixed, the battery end plate design can be simplified, and the modular assembly of the battery can be facilitated. Moreover, the stability of the connection position between the flexible circuit board 30 and the external circuit can be ensured, and the reliability of the operation of the electrical device can be improved.

According to some embodiments of the present application, a fixed structure is provided. The fixed structure includes a bracket 10, a conductive sheet 20 and a flexible circuit board 30. The bracket 10 can be made of plastic parts. The bracket 10, the conductive sheet 20 and the output end of the flexible circuit board 30 are fixed by heat riveting, and the conductive sheet 20 and the pole of the battery cell 40 are fixed by welding, so that the output end of the flexible circuit board 30 The poles of the battery cells 40 remain relatively stable. In the embodiment of the present application, the bracket 10 can also be integrated with the thermistor detection bracket to improve versatility. The bracket 10, the conductive sheet 20 and the flexible circuit board 30 can be assembled first. During the battery assembly, the bracket 10, the conductive sheet 20 and the flexible circuit board 30 are supplied as one piece. The overall integration is high and the assembly accuracy can be ensured by hot riveting, which is helpful. To reduce extra operations for production line employees.

The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (15)

1. A fixation structure, comprising:

the conducting strip is used for being electrically connected with the pole of the battery cell;

the bracket is connected with the conductive sheet; the method comprises the steps of,

the input end of the flexible circuit board is electrically connected with the conducting strip, and the output end of the flexible circuit board is connected with the bracket;

the fixing structure further comprises an output terminal electrically connected with the output end of the flexible circuit board and a support plate for supporting the output terminal, and the support plate is connected with the bracket;

the support plate is provided with a first hole site, the bracket is provided with a first connecting column, and the first connecting column is inserted into the first hole site; or, offer first hole site on the support, be equipped with first spliced pole in the backup pad, first spliced pole peg graft in first hole site.

2. The fixation structure of claim 1, wherein: the support plate and the bracket are riveted and fixed through the first connecting column.

3. The fixation structure of claim 2, wherein: the support is provided with a second hole site, the first hole site and the second hole site are respectively positioned at two ends of the support along the length direction, the support is provided with a second connecting column, and the second connecting column is inserted into the second hole site; or, offer the second hole site on the support, first hole site with the second hole site is located respectively the backup pad is along length direction's both ends, be equipped with the second spliced pole in the backup pad, the second spliced pole peg graft in the second hole site.

4. A fastening structure according to claim 3, wherein: the first hole site is a circular hole; the second hole site is the bar hole, the bar hole is followed the length direction setting of backup pad.

5. A fastening structure according to claim 3, wherein: the support plate and the bracket are riveted and fixed through the second connecting column.

6. The fixation structure of claim 1, wherein: the conductive sheet is provided with a third hole site, the support is provided with a third connecting column, and the third connecting column is inserted into the third hole site.

7. The fixation structure of claim 6, wherein: the conducting strip and the bracket are riveted and fixed through the third connecting column.

8. The fixation structure of claim 6, wherein: the number of the conducting strips is multiple, one part of the conducting strips are arranged on one side of the flexible circuit board along the width direction, the other part of the conducting strips are arranged on the other side of the flexible circuit board along the width direction, the input ends are respectively arranged on two opposite sides of the flexible circuit board along the width direction, and the input ends correspond to the conducting strips one by one.

9. The fixation structure of claim 8, wherein: the number of the third connecting columns is multiple, the third connecting columns are respectively arranged on two opposite sides of the flexible circuit board along the width direction, and the third connecting columns are in one-to-one correspondence with the third hole sites.

10. The fixation structure of any one of claims 1 to 9, wherein: the flexible circuit board and the conducting strip are located on the same side of the support, and a welding disc used for being welded with the pole is arranged on one side of the conducting strip, which faces the support, in a protruding mode.

11. The fixation structure of claim 10, wherein: and the position of the bracket corresponding to the welding disk is provided with a avoidance hole, and the welding disk is matched with the avoidance hole.

12. The fixation structure of claim 10, wherein: the fixing structure further comprises a welding piece, and the welding piece is electrically connected with the conducting plate and the input end of the flexible circuit board.

13. The fixation structure of any one of claims 1 to 9, wherein: the bracket is a plastic part; and/or, the bracket is a plate.

14. A battery comprising a plurality of cells, characterized in that: further comprising a fixation structure according to any one of claims 1-13.

15. An electrical device, characterized in that: comprising a battery according to claim 14.