Battery device, electric equipment and battery cell connecting structure

Abstract

The utility model discloses a battery device, electric equipment and a battery cell connection structure, and relates to the technical field of energy storage devices, the battery device comprises a battery monomer, a data acquisition assembly, a connection sheet and an elastic assembly, the connection sheet is connected with a pole of the battery monomer, and the elastic assembly is connected with the data acquisition assembly; and the elastic component is propped against the connecting piece based on an elastic acting force, so that the electric connection between the data acquisition component and the battery monomers is realized. According to the technical scheme, connection and fixation between the data acquisition assembly and the battery are achieved in an elastic contact mode with high tolerance, the requirement for matching precision can be lowered, the yield of battery products is increased, and meanwhile subsequent disassembly and replacement of the data acquisition assembly are more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and particularly relates to a battery device, an electrical equipment, and a cell connection structure. Background Art

[0002] In the fields of power batteries and energy storage batteries, data acquisition components such as wireless acquisition boards are key modules of a battery management system. Its main function is to acquire parameters such as the voltage and temperature of the battery, so as to monitor the real-time state of the battery and ensure the safe and efficient operation of the battery. In the traditional method, the data acquisition component and the battery are usually fixed by welding; specifically, bus bars are used to weld with the data acquisition component and the pole column of the battery respectively to achieve the electrical connection and mutual fixation between the data acquisition component and the battery.

[0003] However, the current welding fixation method has certain problems. First, the parts where the bus bar contacts the data acquisition component and the parts where the bus bar contacts the pole column have extremely high requirements for flatness. If the flatness does not meet the standard, problems such as false soldering are likely to occur during the welding process, resulting in poor contact between the bus bar, the data acquisition component, and the pole column, which affects the performance and safety of the battery; in other words, the high requirement for fitting accuracy leads to a low yield of battery products. Second, if the welded and fixed data acquisition component fails during subsequent use, it is extremely inconvenient to replace, and the entire battery pack may need to be scrapped, which not only increases the maintenance cost but also causes waste of resources. Summary of the Utility Model

[0004] The main purpose of the present application is to provide a battery device, aiming to achieve the connection and fixation between the data acquisition component and the battery through an elastic contact method with a higher tolerance, so as to reduce the requirement for fitting accuracy, improve the yield of battery products, and at the same time make it more convenient to disassemble and replace the data acquisition component subsequently.

[0005] To achieve the above object, the battery device proposed by the present application includes:

[0006] A battery cell;

[0007] A data acquisition component;

[0008] A connection piece, the connection piece is connected to the pole column of the battery cell;

[0009] An elastic component, the elastic component is connected to the data acquisition component; the elastic component abuts against the connection piece based on an elastic force to achieve the electrical connection between the data acquisition component and the battery cell.

[0010] The battery device proposed in this embodiment has a connecting piece connected to the pole of the battery cell, and an elastic component connected to the data acquisition component. The elastic component can be abutted against the connecting piece based on the elastic force, thus relatively fixing the data acquisition component and the battery cell in a convenient and easy-to-operate manner, and at the same time realizing the electrical connection between the data acquisition component and the battery cell. Since the elastic contact mode between the elastic component and the connecting piece has a high tolerance, it can effectively compensate for the flatness error of the contact part between the elastic component and the connecting piece. Therefore, even if the matching accuracy between the elastic component and the connecting piece is low, the deviation between the two can be eliminated by means of the elastic force of the elastic component, ensuring that the elastic component can closely adhere to the connecting piece, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection. This solution reduces the requirement for the matching accuracy in the process of connecting the battery cell and the data acquisition component, and improves the yield of the battery product. At the same time, since the elastic component can be separated from the connecting piece, it is more convenient to disassemble and replace the data acquisition component from the battery cell later, without scrapping the entire battery pack, thus reducing the maintenance cost of the battery device and reducing the waste of resources.

[0011] In some embodiments, the elastic component includes a housing and a shrapnel structure; the shrapnel structure is connected to the housing, the shrapnel structure is connected to the data acquisition component, and the shrapnel structure is abutted against the connecting piece based on the elastic force.

[0012] The housing can be connected to the bearing area of the data acquisition component, for example, mounted on the surface of the circuit board, to serve as the base part of the elastic component and provide an installation basis for the shrapnel structure on the data acquisition component. Preferably, the housing is made of an insulating material, and the housing encloses a fully enclosed or semi-enclosed accommodation area, and at least part of the shrapnel structure is accommodated in this accommodation area. In this way, a certain protective effect can be formed on the shrapnel structure by the housing, which can avoid problems such as short circuit, leakage, and device damage caused by the shrapnel structure accidentally contacting external devices to a certain extent.

[0013] In some embodiments, the shrapnel structure includes a first shrapnel and a second shrapnel, and the first shrapnel and the second shrapnel form a clamping structure, and the connecting piece is clamped in the clamping structure.

[0014] In this embodiment, the clamping structure formed by the first shrapnel and the second shrapnel exerts elastic forces on the connecting piece from two directions to clamp the connecting piece, so as to improve the connection stability between the elastic component and the connecting piece, and further improve the power transmission stability between the battery cell and the data acquisition component.

[0015] In some embodiments, the first elastic piece has a first arched structure, the protruding direction of the first arched structure faces the second elastic piece, and the first arched structure is in abutting cooperation with the connecting piece.

[0016] When the connecting piece is inserted into the clamping structure formed by the first elastic piece and the second elastic piece, the connecting piece abuts against the first arched structure and drives the first arched structure to move in a direction away from the second elastic piece, so that the two ends of the first arched structure move away from each other. In this way, the overall deformation of the first elastic piece can be used to reversely provide an elastic acting force for the connecting piece, and the connecting piece is pressed tightly against the second elastic piece.

[0017] In some embodiments, the second elastic piece has a second arched structure, the protruding direction of the second arched structure faces the first elastic piece, and the second arched structure is in abutting cooperation with the connecting piece.

[0018] When the connecting piece is inserted into the clamping structure formed by the first elastic piece and the second elastic piece, the connecting piece abuts against the second arched structure and drives the second arched structure to move in a direction away from the first elastic piece, so that the two ends of the second arched structure move away from each other. In this way, the overall deformation of the second elastic piece can be used to reversely provide an elastic acting force for the connecting piece, and the connecting piece is pressed tightly against the first elastic piece.

[0019] In some embodiments, the connecting piece is provided with a limiting hole, and the outer shell is provided with a positioning pin, and the positioning pin is inserted and matched in the limiting hole.

[0020] When the connecting piece and the elastic piece structure are in complete abutting cooperation, the positioning pin can be synchronously inserted into the limiting hole; through the limiting cooperation between the positioning pin and the limiting hole, the subsequent position shift of the connecting piece relative to the elastic component can be avoided, and the connection stability between the connecting piece and the elastic component is improved.

[0021] In some embodiments, the outer shell is provided with a receiving groove, at least a part of the elastic piece structure is arranged in the receiving groove, and at least a part of the positioning pin is arranged in the receiving groove; the positioning pin has a first pin section and a second pin section, the first pin section is sleeved on the second pin section, the second pin section can axially move relative to the first pin section, and at least one of the first pin section and the second pin section is used to abut against the hole wall of the limiting hole in the radial direction.

[0022] In this embodiment, by setting the positioning pin as a two-stage structure that can axially move, the length of the positioning pin can be conveniently adjusted as needed during the assembly, disassembly and replacement processes, so as to more conveniently install and remove the connecting piece, thereby improving the use convenience.

[0023] In some embodiments, the positioning pin further includes an elastic reset member. One end of the elastic reset member is connected to the first pin segment, and the other end of the elastic reset member is connected to the second pin segment. The elastic reset member is configured to drive the second pin segment to axially move away from the first pin segment under an elastic force.

[0024] The elastic reset member can apply an elastic force to the second pin segment to ensure that the second pin segment is always in an extended state relative to the first pin segment when no other external force is applied; in this way, when the connecting piece and the elastic piece structure are in a normal connection state, it can avoid the problem that the contact area between the positioning pin and the hole wall of the limiting hole is insufficient due to the retraction of the second pin segment into the first pin segment, thereby failing to form an effective limiting effect on the connecting piece.

[0025] In some embodiments, the housing has a first housing portion and a second housing portion arranged at intervals, and the area between the first housing portion and the second housing portion constitutes the accommodation groove;

[0026] The positioning pin protrudes from the first housing portion, and the second housing portion is provided with a first adjustment through hole, and the first adjustment through hole is arranged opposite to the positioning pin.

[0027] By providing the first adjustment through hole, when it is necessary to load the connecting piece into the accommodation groove or take out the connecting piece from the accommodation groove, a tool can be used to pass through the first adjustment through hole from the outside and extend into the accommodation groove, so as to conveniently push the second pin segment to retract into the first pin segment by the tool, thereby facilitating the loading and taking out operations of the connecting piece.

[0028] Preferably, when the second pin segment is in an extended state relative to the first pin segment, the second pin segment can be inserted and fitted into the first adjustment through hole to utilize the radial limiting effect of the first adjustment through hole on the second pin segment to maintain the overall stability of the positioning pin and reduce shaking.

[0029] In some embodiments, the second housing portion is provided with a second adjustment through hole, and the second adjustment through hole is arranged opposite to the elastic piece structure.

[0030] By providing the second adjustment through hole, a tool can be used to pass through the second adjustment through hole from the outside and extend into the accommodation groove, so that the elastic piece structure can be conveniently adjusted from the outside by the tool.

[0031] In some embodiments, the data acquisition component includes a circuit board, the circuit board is arranged perpendicular to the axial direction of the pole column, the housing is arranged on the circuit board, and the housing is provided with an accommodation groove, and the elastic piece structure is arranged in the accommodation groove; the connecting piece is arranged perpendicular to the axial direction of the pole column, at least part of the connecting piece is arranged in the accommodation groove, and the connecting piece is in abutting fit with the elastic piece structure.

[0032] In this embodiment, through a reasonable structural arrangement of the components in the battery device, the circuit board can be conveniently assembled on the battery cell, and it is also convenient to disassemble and replace the circuit board subsequently.

[0033] In some embodiments, the battery device includes at least two of the battery cells, at least two of the battery cells are arranged in a first-plane array, the pole columns of at least two of the battery cells are perpendicular to the first plane, and the pole columns of at least two of the battery cells are connected to the connecting piece.

[0034] Based on the structural arrangement of this embodiment, the connection between one connecting piece and the pole columns of multiple battery cells can be realized, so that the electrical connection between multiple battery cells and the data acquisition component can be achieved through one connecting piece. At the same time, the series or parallel connection between multiple battery cells can be realized by using the connection between the connecting piece and the corresponding pole column, expanding the application scope.

[0035] In some embodiments, the connecting piece has a connecting ear portion, the connecting ear portion is arranged in the accommodating groove, and the connecting ear portion is in abutting cooperation with the elastic piece structure.

[0036] By providing the connecting ear portion, the structural division of the connecting piece can be optimized, so that the main structure of the connecting piece (that is, the part of the connecting piece other than the connecting ear portion) is used to connect with the pole column of the battery cell, while the connecting ear portion is used to dock with the elastic piece structure, thereby making the overall structural arrangement of the battery device more reasonable.

[0037] In some embodiments, the battery device includes at least two of the elastic components, the connecting piece passes through the accommodating grooves of at least two of the elastic components; the circuit board has at least two electrical connection ends, and at least two of the electrical connection ends are respectively connected to the elastic piece structures of at least two of the elastic components in one-to-one correspondence.

[0038] Multiple electrical connection ends on the circuit board can be respectively connected to different functional modules and different electronic components; each electrical connection end on the circuit board is correspondingly provided with an elastic component, and each electrical connection end is connected to the elastic piece structure of the corresponding elastic component; when the connecting piece passes through the accommodating grooves of the above-mentioned multiple elastic components at the same time, the connecting piece can be in abutting cooperation with the elastic piece structures of the above-mentioned multiple elastic components at the same time. In this way, the battery cells connected to the connecting piece can be electrically connected to different functional modules and different electronic components on the circuit board through the above-mentioned multiple elastic components, thereby providing a basis for obtaining various different types of parameters of the battery cells.

[0039] In some embodiments, the circuit board has a first side and a second side disposed opposite to each other. At least one of the electrical connection terminals is provided on the first side, and at least one of the electrical connection terminals is provided on the second side. The battery device includes at least two of the connection pieces. At least one of the connection pieces is adjacently disposed to the first side, and at least one of the connection pieces is adjacently disposed to the second side.

[0040] Based on the above settings, electrical connection between multiple battery cells and the same circuit board can be achieved, and the overall structure of the battery device is optimized, making the arrangement of each device more compact and reducing unnecessary occupation of space.

[0041] In some embodiments, the data acquisition component is provided with positioning holes, and the elastic component is provided with a boss structure, and the boss structure is inserted into the positioning holes.

[0042] Through the limiting cooperation between the boss structure and the positioning holes, preliminary positioning between the elastic component and the data acquisition component can be achieved, thereby making it more convenient to connect and fix the elastic component and the data acquisition component, and improving the relative position accuracy between the two.

[0043] In some embodiments, the boss structure is provided as a welding leg, and the boss structure is fixedly welded to the data acquisition component.

[0044] By providing the boss structure as a welding leg, while using the boss structure to achieve preliminary positioning between the elastic component and the data acquisition component, the boss structure can be directly welded to the data acquisition component, thereby conveniently achieving the connection and fixation between the elastic component and the data acquisition component.

[0045] In some embodiments, the data acquisition component includes a circuit board, and the positioning holes penetrate through the circuit board; the end of the boss structure is fixedly welded to the circuit board.

[0046] This setting method makes the welding operation more convenient, without the need to perform the welding operation on the side where the main body part of the elastic component is located, thereby avoiding interference with the main body part of the elastic component.

[0047] In some embodiments, the battery device further includes a temperature sensor, the temperature sensor is electrically connected to the data acquisition component, and the temperature sensor is used to obtain the temperature parameter of the battery cell and transmit it to the data acquisition component.

[0048] By providing the temperature sensor, the monitoring of the temperature condition of the battery cell can be realized, and the operating condition of the battery cell can be reflected through the temperature parameter, so that intervention can be carried out in time when an abnormality occurs.

[0049] In some embodiments, the data acquisition component is provided with a monitoring through-hole that faces the battery cell.

[0050] By providing the monitoring through-hole, it is convenient for the staff to observe the condition of the battery cell in the area covered by the data acquisition component through the monitoring through-hole, avoiding the data acquisition component from blocking the battery cell. Additionally, in practical applications, the battery cell usually transfers temperature to the temperature sensor in the previous embodiment with the help of a heat-conducting pad; by providing the monitoring through-hole, it is possible to conveniently detect whether the position of the heat-conducting pad has shifted.

[0051] The present application also proposes an electrical device, which includes the battery device as described above.

[0052] This solution relatively fixes the data acquisition component and the battery cell in a convenient and easy-to-operate manner, and at the same time realizes the electrical connection between the data acquisition component and the battery cell; because the elastic contact method between the elastic component and the connecting piece has a high tolerance, it can effectively compensate for the flatness error of the contact part between the elastic component and the connecting piece. Therefore, even if the matching accuracy between the elastic component and the connecting piece is low, the deviation between the two can be eliminated by the elastic force of the elastic component, ensuring that the elastic component can closely fit on the connecting piece, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection. This solution reduces the requirement for the matching accuracy during the connection between the battery cell and the data acquisition component, improving the yield of the battery product; at the same time, since the elastic component can be separated from the connecting piece, it is more convenient to disassemble and replace the data acquisition component from the battery cell later, without having to scrap the entire battery pack, thereby reducing the maintenance cost of the battery device and reducing the waste of resources.

[0053] The present application also proposes a battery cell connection structure, which includes:

[0054] A connecting piece for connecting the pole posts of the battery cells.

[0055] An elastic component for connecting the data acquisition component; the elastic component abuts against the connecting piece based on the elastic force to realize the electrical connection between the data acquisition component and the battery cell.

[0056] This solution has achieved the relative fixation between the data acquisition component and the battery cell in a convenient and easy-to-operate manner, and at the same time realized the electrical connection between the data acquisition component and the battery cell; since the elastic contact mode between the elastic component and the connecting piece has a high tolerance, it can effectively compensate for the flatness error of the contact part between the elastic component and the connecting piece. Therefore, even if the matching accuracy between the elastic component and the connecting piece is low, the deviation between the two can be eliminated by means of the elastic force of the elastic component, ensuring that the elastic component can closely adhere to the connecting piece, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection. This solution reduces the requirement for the matching accuracy during the connection between the battery cell and the data acquisition component, and improves the yield rate of battery products; at the same time, since the elastic component can be separated from the connecting piece, it is more convenient to disassemble and replace the data acquisition component from the battery cell later, without having to scrap the entire battery pack, thereby reducing the maintenance cost of the battery device and reducing the waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0058] Figure 1 is the overall exploded structural schematic diagram of an embodiment of the battery device of the present application;

[0059] Figure 2 is the overall top view structural schematic diagram of an embodiment of the battery device of the present application;

[0060] Figure 3 is the structural schematic diagram of the elastic component in an embodiment of the battery device of the present application;

[0061] Figure 4 is the overall front view structural schematic diagram of an embodiment of the battery device of the present application;

[0062] Figure 5 is Figure 4 the enlarged schematic diagram of part A in

[0063] Figure 6 is the partial bottom view structural schematic diagram of an embodiment of the battery device of the present application.

[0064] Explanation of the reference numerals in the drawings:

[0065] 1. Battery cell; 11. Terminal post;

[0066] 2. Data acquisition component; 21. Circuit board; 22. Positioning hole; 211. First side portion; 212. Second side portion;

[0067] 3. Connecting piece; 31. Limiting hole; 32. Connecting ear portion;

[0068] 4. Elastic component; 41. Outer shell; 42. Elastic sheet structure; 43. Boss structure; 411. Accommodating groove; 412. First housing portion; 413. Second housing portion; 421. First elastic sheet; 422. Second elastic sheet; 4131. First adjusting through hole; 4132. Second adjusting through hole; 4211. First arched structure; 4221. Second arched structure;

[0069] 5. Positioning pin; 6. Temperature sensor; 7. Monitoring through hole.

[0070] The realization, functional features and advantages of the purpose of this application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0071] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0072] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0073] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0074] In the fields of power batteries and energy storage batteries, data acquisition components such as wireless acquisition boards are key modules of the Battery Management System. Their main function is to collect parameters such as the voltage and temperature of the battery, so as to monitor the real-time state of the battery and ensure the safe and efficient operation of the battery. In the traditional method, the data acquisition component and the battery are usually fixed by welding; specifically, the bus bar is welded to the data acquisition component and the pole column of the battery respectively to achieve the electrical connection and mutual fixation between the data acquisition component and the battery.

[0075] However, there are certain problems with the current welding fixation method. First, the parts where the bus bar contacts the data acquisition component and the parts where the bus bar contacts the pole column have extremely high requirements for flatness. If the flatness does not meet the standard, it is easy to have the problem of poor welding during the welding process, resulting in poor contact between the bus bar, the data acquisition component, and the pole column, which affects the performance and safety of the battery; in other words, the high requirement for fitting accuracy leads to a low yield rate of battery products. Second, if the welded and fixed data acquisition component fails during subsequent use, it is extremely inconvenient to replace, and the entire battery pack may need to be scrapped, which not only increases the maintenance cost but also causes waste of resources.

[0076] Based on the above problems, the present application correspondingly provides a battery device, which can realize the connection and fixation between the data acquisition component and the battery through an elastic contact method with higher tolerance, so as to reduce the requirement for fitting accuracy, improve the yield rate of battery products, and at the same time make it more convenient to disassemble and replace the data acquisition component subsequently.

[0077] Please refer to Figure 1 and Figure 2 , the battery device includes:

[0078] Battery cell 1;

[0079] Data acquisition component 2;

[0080] Connecting piece 3, the connecting piece 3 is connected to the pole column 11 of the battery cell 1;

[0081] Elastic component 4, the elastic component 4 is connected to the data acquisition component 2; the elastic component 4 abuts against the connecting piece 3 based on the elastic force to achieve the electrical connection between the data acquisition component 2 and the battery cell 1.

[0082] In this embodiment, the battery cell 1 is the energy source of the entire battery device, and its structure and working principle can refer to the prior art and will not be elaborated here; the pole column 11 of the battery cell 1 is used to connect to an external circuit to achieve the output and input of electric energy.

[0083] The data acquisition component 2 is used to collect relevant parameters (such as voltage, temperature, etc.) of the battery cell 1 and transmit them to an external management system for monitoring and managing the operating state of the battery. The data acquisition component 2 may include a carrier and electronic components such as chips, sensors, and communication interfaces integrated on the carrier. Its specific structural form can be designed as a rigid circuit board, a flexible circuit board, or a highly integrated micro-module according to actual application requirements, which is not limited here.

[0084] The connecting piece 3 is connected to the terminal post 11 of the battery cell 1 to achieve electrical connection between the battery cell 1 and an external circuit or other components. The material and shape of the connecting piece 3 can be designed according to the specifications, arrangement mode of the terminal post 11, and actual connection requirements. In this embodiment, the connecting piece 3 can be made of a metal material with conductivity and certain mechanical strength, such as copper, aluminum, etc., to form a bus bar, and its shape is set as a sheet-like structure adapted to the terminal post 11, and can be connected and fixed to the terminal post 11 by means of welding or the like.

[0085] The elastic component 4 has conductivity. The elastic component 4 can be connected to the data acquisition component 2 by means of welding, locking, snap connection, etc., and the elastic component 4 has a certain degree of freedom of movement relative to the data acquisition component 2 after the connection is completed. In this way, the movable part of the elastic component 4 can abut against the connecting piece 3 based on its own elastic force to form a connection path between the terminal post 11, the connecting piece 3, the elastic component 4, and the data acquisition component 2, so as to achieve electrical connection between the data acquisition component 2 and the battery cell 1. Among them, the elastic component 4 can be set as any structural form that can provide elastic force to the outside based on its own deformation. For example, it can be set as an elastic single-piece structure, one end of which is fixedly connected to the data acquisition component 2 and the other end abuts against the connecting piece 3 through elastic deformation; the elastic component 4 can also be set as a spring structure, one end of which is connected to the data acquisition component 2 and the other end abuts against the connecting piece 3 based on elastic force; the elastic component 4 can also be set as structural forms such as an elastic rubber pad, an elastic buckle, and an elastic claw; in actual applications, as long as it is ensured that the elastic component 4 can keep abutting against the connecting piece 3 based on its own elastic force and achieve electrical connection between the data acquisition component 2 and the battery cell 1, it is not limited here.

[0086] Based on the above settings, during actual assembly, the elastic component 4 can be first connected to the data acquisition component 2, and then the movable part of the elastic component 4 is abutted against the connecting piece 3 based on the elastic force. Finally, the connecting piece 3 is connected to the pole 11 of the battery cell 1. In this way, the relative fixation between the data acquisition component 2 and the battery cell 1 is completed in a convenient and easy-to-operate manner, and at the same time, the electrical connection between the data acquisition component 2 and the battery cell 1 is realized. It should be noted that the elastic contact mode between the elastic component 4 and the connecting piece 3 has a high tolerance, which can effectively compensate for the flatness error of the contact part between the elastic component 4 and the connecting piece 3. Even if the matching accuracy between the elastic component 4 and the connecting piece 3 is low, the deviation between the two can be eliminated by means of the elastic force of the elastic component 4, ensuring that the elastic component 4 can be closely attached to the connecting piece 3, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection; this connection form reduces the requirement for the matching accuracy. During the design and assembly debugging process, it is only necessary to ensure good connection between the pole 11 and the connecting piece 3, without having to consider too much the flatness error between the connecting piece 3 and the elastic component 4.

[0087] It can be seen that in the battery device provided in this embodiment, the connecting piece 3 is connected to the pole 11 of the battery cell 1, the elastic component 4 is connected to the data acquisition component 2, and the elastic component 4 can be abutted against the connecting piece 3 based on the elastic force. In this way, the relative fixation between the data acquisition component 2 and the battery cell 1 is completed in a convenient and easy-to-operate manner, and at the same time, the electrical connection between the data acquisition component 2 and the battery cell 1 is realized; due to the elastic contact mode between the elastic component 4 and the connecting piece 3 having a high tolerance, which can effectively compensate for the flatness error of the contact part between the elastic component 4 and the connecting piece 3, even if the matching accuracy between the elastic component 4 and the connecting piece 3 is low, the deviation between the two can be eliminated by means of the elastic force of the elastic component 4, ensuring that the elastic component 4 can be closely attached to the connecting piece 3, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection. This solution reduces the requirement for the matching accuracy during the connection between the battery cell 1 and the data acquisition component 2, and improves the yield of the battery product; at the same time, since the elastic component 4 can be separated from the connecting piece 3, it is more convenient to disassemble and replace the data acquisition component 2 from the battery cell 1 later, without having to scrap the entire battery pack, thereby reducing the maintenance cost of the battery device and reducing the waste of resources.

[0088] In some embodiments, referring to Figures 1 to 3 , the elastic component 4 includes a housing 41 and a shrapnel structure 42; the shrapnel structure 42 is connected to the housing 41, the shrapnel structure 42 is connected to the data acquisition component 2, and the shrapnel structure 42 is abutted against the connecting piece 3 based on the elastic force.

[0089] Specifically, the middle part of the elastic sheet structure 42 can be connected to the outer shell 41 by means of fitting, locking, etc. One end of the elastic sheet structure 42 can be directly or indirectly connected to the conductive part (such as conductive traces on the circuit board, pads, etc.) on the data acquisition component 2 for electrical connection, and the other end of the elastic sheet structure 42 applies an elastic force to the connecting piece 3 through its own elastic deformation to abut against the connecting piece 3.

[0090] The outer shell 41 can be connected to the bearing area of the data acquisition component 2, for example, erected on the surface of the circuit board, to serve as the base part of the elastic component 4 and provide an installation basis for the elastic sheet structure 42 on the data acquisition component 2. Preferably, the outer shell 41 is made of an insulating material, and the outer shell 41 encloses a fully enclosed or semi-enclosed accommodating area, and at least part of the elastic sheet structure 42 is accommodated in this accommodating area. In this way, the outer shell 41 can form a certain protective effect on the elastic sheet structure 42, and can avoid problems such as short circuit, leakage, and device damage caused by the accidental contact between the elastic sheet structure 42 and external devices to a certain extent.

[0091] In some embodiments, referring to Figures 1 to 5 , the elastic sheet structure 42 includes a first elastic sheet 421 and a second elastic sheet 422, and the first elastic sheet 421 and the second elastic sheet 422 form a clamping structure, and the connecting piece 3 is clamped in the clamping structure.

[0092] Specifically, the first elastic sheet 421 can be connected to the outer shell 41 by means of fitting, locking, etc. The first end of the first elastic sheet 421 can be directly or indirectly connected to the conductive part (such as conductive traces on the circuit board, pads, etc.) on the data acquisition component 2 for electrical connection; similarly, the second elastic sheet 422 can be connected to the outer shell 41 by means of fitting, locking, etc. The first end of the second elastic sheet 422 can be directly or indirectly connected to the conductive part (such as conductive traces on the circuit board, pads, etc.) on the data acquisition component 2 for electrical connection; in the case of not being connected to the connecting piece 3, the second end of the first elastic sheet 421 and the second end of the second elastic sheet 422 can be mutually attached or have a preset distance, and this preset distance should be less than the thickness dimension of the connecting piece 3; during the assembly process, the connecting piece 3 can be inserted between the second end of the first elastic sheet 421 and the second end of the second elastic sheet 422 to clamp the connecting piece 3 by using the clamping structure formed by the first elastic sheet 421 and the second elastic sheet 422.

[0093] In this embodiment, the clamping structure formed by the first elastic sheet 421 and the second elastic sheet 422 applies elastic forces to the connecting piece 3 from two directions to clamp the connecting piece 3. In this way, the connection stability between the elastic component 4 and the connecting piece 3 can be improved, and further the power transmission stability between the battery cell 1 and the data acquisition component 2 can be improved.

[0094] In some embodiments, referring to Figure 4 andFigure 5 The first elastic piece 421 has a first arched structure 4211, the protruding direction of the first arched structure 4211 faces the second elastic piece 422, and the first arched structure 4211 is in abutting cooperation with the connecting piece 3.

[0095] In some embodiments, referring to Figure 4 and Figure 5 the second elastic piece 422 has a second arched structure 4221, the protruding direction of the second arched structure 4221 faces the first elastic piece 421, and the second arched structure 4221 is in abutting cooperation with the connecting piece 3.

[0096] Illustratively, the first arched structure 4211 can be formed by bending the middle part of the first elastic piece 421. One end of the first arched structure 4211 can be connected to the outer shell 41, and the other end of the first arched structure 4211 can be slidably fitted on the surface of the outer shell 41; when the connecting piece 3 is inserted into the clamping structure formed by the first elastic piece 421 and the second elastic piece 422, the connecting piece 3 abuts against the first arched structure 4211 and drives the first arched structure 4211 to move in a direction away from the second elastic piece 422, so that the two ends of the first arched structure 4211 move away from each other. In this way, the overall deformation of the first elastic piece 421 can be used to reversely provide an elastic force for the connecting piece 3 and press the connecting piece 3 against the second elastic piece 422.

[0097] Similarly, the second arched structure 4221 can be formed by bending the middle part of the second elastic piece 422. One end of the second arched structure 4221 can be connected to the outer shell 41, and the other end of the second arched structure 4221 can be slidably fitted on the surface of the outer shell 41; when the connecting piece 3 is inserted into the clamping structure formed by the first elastic piece 421 and the second elastic piece 422, the connecting piece 3 abuts against the second arched structure 4221 and drives the second arched structure 4221 to move in a direction away from the first elastic piece 421, so that the two ends of the second arched structure 4221 move away from each other. In this way, the overall deformation of the second elastic piece 422 can be used to reversely provide an elastic force for the connecting piece 3 and press the connecting piece 3 against the first elastic piece 421.

[0098] In some embodiments, referring to Figures 1 to 3 the connecting piece 3 is provided with a limiting hole 31, and the outer shell 41 is provided with a positioning pin 5, and the positioning pin 5 is inserted and fitted in the limiting hole 31.

[0099] Specifically, when the connecting piece 3 completes the abutting cooperation with the elastic piece structure 42, the positioning pin 5 can be synchronously inserted into the limiting hole 31; through the limiting cooperation between the positioning pin 5 and the limiting hole 31, the subsequent position deviation of the connecting piece 3 relative to the elastic component 4 can be avoided, and the connection stability between the connecting piece 3 and the elastic component 4 is improved.

[0100] In some embodiments, referring to Figures 1 to 3, the housing 41 is provided with a receiving groove 411, and at least a part of the elastic piece structure 42 is disposed in the receiving groove 411, and at least a part of the positioning pin 5 is disposed in the receiving groove 411; the positioning pin 5 has a first pin section (not shown in the figure) and a second pin section (not shown in the figure), the first pin section is sleeved on the second pin section, the second pin section can axially move relative to the first pin section, and at least one of the first pin section and the second pin section is used to abut against the hole wall of the limiting hole 31 in the radial direction.

[0101] Taking Figure 1 and Figure 3 the orientation shown as an example, the receiving groove 411 penetrates through the housing 41 in the horizontal direction, and the part of the elastic piece structure 42 for abutting and cooperating with the connecting piece 3 is disposed in the receiving groove 411, and other parts of the elastic piece structure 42 can be fixed in the housing 41 by means of fitting or the like; the positioning pin 5 is disposed on the horizontal groove wall of the receiving groove 411 and is spaced from the connecting piece 3 in the horizontal direction, the axis direction of the positioning pin 5 is vertically arranged, and the first pin section and the second pin section are arranged in sequence along the axis. Based on the above settings, during the assembly stage, the second pin section can be first retracted into the first pin section to reserve space for the connecting piece 3 in the vertical direction, and then the connecting piece 3 can be inserted into the receiving groove 411 in the horizontal direction, so that the connecting piece 3 abuts and cooperates with the elastic piece structure 42, and the limiting hole 31 is opposite to the first pin section in the vertical direction, and then the second pin section is extended from the first pin section and inserted into the limiting hole 31, so that the limiting effect on the connecting piece 3 can be realized by the abutting cooperation between the first pin section, the second pin section and the hole wall of the limiting hole 31; if it is necessary to disassemble and replace the data acquisition component 2 subsequently, the second pin section can be retracted into the first pin section again to release the limiting cooperation between the positioning pin 5 and the limiting hole 31, and at the same time reserve space in the vertical direction to facilitate taking out the connecting piece 3 from the receiving groove 411 in the horizontal direction.

[0102] In this embodiment, by setting the positioning pin 5 as a two-stage structure that can axially move, the length of the positioning pin 5 can be conveniently adjusted as needed during the assembly and disassembly and replacement processes, so as to more conveniently install and take out the connecting piece 3, thereby improving the use convenience.

[0103] In some embodiments, referring to Figures 1 to 3 , the positioning pin 5 further includes an elastic resetting member (not shown in the figure), one end of the elastic resetting member is connected to the first pin section, the other end of the elastic resetting member is connected to the second pin section, and the elastic resetting member is used to drive the second pin section to axially move along the direction away from the first pin section under the elastic acting force.

[0104] The elastic reset member can be a spring, an elastic colloid, etc., which is not limited here. The elastic reset member can apply an elastic acting force to the second pin segment to ensure that the second pin segment is always in a protruding state relative to the first pin segment when not subjected to other external forces; in this way, when the connecting piece 3 and the elastic piece structure 42 maintain a normal connection state, it can avoid the problem that the contact area between the positioning pin 5 and the hole wall of the limiting hole 31 is insufficient due to the retraction of the second pin segment into the first pin segment, thus failing to form an effective limiting effect on the connecting piece 3.

[0105] In some embodiments, referring to Figures 1 to 5 , the housing 41 has a first housing portion 412 and a second housing portion 413 arranged at intervals, and the area between the first housing portion 412 and the second housing portion 413 forms a receiving groove 411;

[0106] The positioning pin 5 protrudes from the first housing portion 412, and the second housing portion 413 is provided with a first adjustment through hole 4131, and the first adjustment through hole 4131 is arranged opposite to the positioning pin 5.

[0107] Illustratively, the second housing portion 413 can be arranged above the first housing portion 412, the positioning pin 5 can vertically extend upward in the receiving groove 411, the first pin segment and the second pin segment are arranged in sequence from bottom to top, and the first adjustment through hole 4131 can be arranged directly above the second pin segment. By providing the first adjustment through hole 4131, when it is necessary to load the connecting piece 3 into the receiving groove 411 or take out the connecting piece 3 from the receiving groove 411, a tool can be used to pass through the first adjustment through hole 4131 from the outside and extend into the receiving groove 411, so as to conveniently push the second pin segment to retract into the first pin segment by the tool, thereby facilitating the loading and taking-out operations of the connecting piece 3.

[0108] Preferably, when the second pin segment is in a protruding state relative to the first pin segment, the second pin segment can be inserted and fitted into the first adjustment through hole 4131 to utilize the limiting effect of the first adjustment through hole 4131 in the radial direction to maintain the overall stability of the positioning pin 5 and reduce shaking.

[0109] In some embodiments, referring to Figures 1 to 5 , the second housing portion 413 is provided with a second adjustment through hole 4132, and the second adjustment through hole 4132 is arranged opposite to the elastic piece structure 42.

[0110] Illustratively, the second housing portion 413 can be arranged above the first housing portion 412, and the second adjustment through hole 4132 can be arranged directly above the elastic piece structure 42. By providing the second adjustment through hole 4132, a tool can be used to pass through the second adjustment through hole 4132 from the outside and extend into the receiving groove 411, so that the elastic piece structure 42 can be conveniently adjusted from the outside by the tool.

[0111] In some embodiments, referring toFigures 1 to 5 , the data acquisition component 2 includes a circuit board 21 which is arranged perpendicular to the axial direction of the pole 11. The housing 41 is arranged on the circuit board 21. The housing 41 is provided with a receiving groove 411, and the elastic sheet structure 42 is arranged in the receiving groove 411; the connecting piece 3 is arranged perpendicular to the axial direction of the pole 11, at least part of the connecting piece 3 is arranged in the receiving groove 411, and the connecting piece 3 is in abutting cooperation with the elastic sheet structure 42.

[0112] Taking Figure 1 the orientation shown as an example, the battery cell 1 is placed on a horizontal plane, the pole 11 is located on the upper side surface of the battery cell 1, the axial direction of the pole 11 is vertically arranged, the connecting piece 3 is horizontally laid on the pole 11 and connected to the pole 11 by means such as welding; the circuit board 21 is horizontally arranged, the housing 41 can be arranged on the upper side surface or the lower side surface of the circuit board 21, a receiving groove 411 is opened on the vertical side wall of the housing 41, the receiving groove 411 faces the connecting piece 3, and at least part of the connecting piece 3 is received in the receiving groove 411; the elastic sheet structure 42 can be connected to the housing 41 by means such as fitting, and the part of the elastic sheet structure 42 located in the receiving groove 411 is in abutting cooperation with the part of the connecting piece 3 received in the receiving groove 411 based on the elastic force; the remaining part of the elastic sheet structure 42 can be connected to the conductive part of the circuit board 21 by direct connection or indirect connection, for example, it can be welded to the pad of the circuit board 21 through a solder leg structure. In this way, with the circuit board 21 as a carrier, the electrical connection between the battery cell 1 and other electronic components on the circuit board 21 is realized. Subsequently, if it is necessary to replace the data acquisition component 2, only need to pull out the circuit board 21 horizontally outward to separate the elastic sheet structure 42 from the connecting piece 3.

[0113] In this embodiment, through the reasonable structural arrangement of the components in the battery device, the circuit board 21 can be conveniently assembled on the battery cell 1, and it is also convenient to disassemble and replace the circuit board 21 subsequently.

[0114] In some embodiments, referring to Figures 1 to 5 , the battery device includes at least two battery cells 1. The at least two battery cells 1 are arranged in an array in a first plane. The poles 11 of the at least two battery cells 1 are perpendicular to the first plane, and the poles 11 of the at least two battery cells 1 are connected to the connecting piece 3.

[0115] Specifically, taking the first plane as the horizontal plane as an example, multiple battery cells 1 are arranged in an array on the horizontal plane. The pole columns 11 of each battery cell 1 are all located on the upper side surface of the battery cell 1, and the axial directions of the pole columns 11 are vertically arranged. The connecting piece 3 can be simultaneously laid on the pole columns 11 of multiple battery cells 1 and connected to the multiple pole columns 11 by means such as welding. Based on the structural setting of this embodiment, the connection between one connecting piece 3 and the pole columns 11 of multiple battery cells 1 can be realized, so that the electrical connection between multiple battery cells 1 and the data acquisition component 2 can be realized through one connecting piece 3. At the same time, the series or parallel connection between multiple battery cells 1 can be realized by using the connection between the connecting piece 3 and the corresponding pole columns 11, expanding the application range.

[0116] In some embodiments, referring to Figures 1 to 5 , the connecting piece 3 has a connecting ear portion 32. The connecting ear portion 32 is arranged in the accommodating groove 411, and the connecting ear portion 32 is in abutting cooperation with the elastic piece structure 42.

[0117] Illustratively, taking the connecting piece 3 arranged horizontally as an example, the connecting ear portion 32 can be arranged at the edge of the connecting piece 3 and extend horizontally outward into the accommodating groove 411 of the corresponding elastic component 4. By arranging the connecting ear portion 32, the structural division of labor of the connecting piece 3 can be optimized, so that the main body structure of the connecting piece 3 (that is, the part of the connecting piece 3 other than the connecting ear portion 32) is used to connect with the pole column 11 of the battery cell 1, while the connecting ear portion 32 is used to dock with the elastic piece structure 42, so that the overall structural layout of the battery device can be more reasonable.

[0118] In some embodiments, referring to Figures 1 to 5 , the battery device includes at least two elastic components 4. The connecting piece 3 passes through the accommodating grooves 411 of at least two elastic components 4; the circuit board 21 has at least two electrical connection ends, and the at least two electrical connection ends are respectively connected to the elastic piece structures 42 of the at least two elastic components 4 in one-to-one correspondence.

[0119] In this embodiment, the electrical connection end can refer to a specific area or component (such as a pad, a connector, a terminal, etc.) on the circuit board 21 for realizing electrical connection. The multiple electrical connection ends on the circuit board 21 can be respectively connected to different functional modules and different electronic components; each electrical connection end on the circuit board 21 is correspondingly provided with an elastic component 4, and each electrical connection end is connected to the elastic piece structure 42 of the corresponding elastic component 4; when the connecting piece 3 simultaneously passes through the accommodating grooves 411 of the above-mentioned multiple elastic components 4, the connecting piece 3 can be simultaneously in abutting cooperation with the elastic piece structures 42 of the above-mentioned multiple elastic components 4. In this way, the battery cell 1 connected to the connecting piece 3 can be electrically connected to different functional modules and different electronic components on the circuit board 21 through the above-mentioned multiple elastic components 4, thus providing a basis for obtaining various different types of parameters of the battery cell 1.

[0120] In some embodiments, referring to Figures 1 to 5 , the circuit board 21 has a first side portion 211 and a second side portion 212 which are oppositely arranged. At least one electrical connection terminal is provided on the first side portion 211, and at least one electrical connection terminal is provided on the second side portion 212; the battery device includes at least two connecting pieces 3, at least one connecting piece 3 is adjacently arranged with the first side portion 211, and at least one connecting piece 3 is adjacently arranged with the second side portion 212.

[0121] As Figure 1 shown, taking the number of battery cells 1 being set to two as an example, the two battery cells 1 are arranged in the front-rear direction on a horizontal plane. Two pole columns 11 arranged at intervals in the left-right direction are provided on the upper side surface of each battery cell 1. The connection lines of the four pole columns 11 on the horizontal plane form a rectangle; the number of connecting pieces 3 is set to two. One of the connecting pieces 3 is horizontally laid on the two left pole columns 11 and connected to the two left pole columns 11 by means such as welding. The other connecting piece 3 is horizontally laid on the two right pole columns 11 and connected to the two right pole columns 11 by means such as welding; two connection ear portions 32 arranged at intervals in the front-rear direction protrude from the right side edge of the connecting piece 3 on the left side, and two connection ear portions 32 arranged at intervals in the front-rear direction protrude from the left side edge of the connecting piece 3 on the right side; the circuit board 21 is arranged between the two left and right connecting pieces 3. One electrical connection terminal is provided on the first side portion 211 (i.e., the left side portion) of the circuit board 21, and one electrical connection terminal is provided on the second side portion 212 (i.e., the right side portion) of the circuit board 21; each electrical connection terminal is correspondingly connected with an elastic component 4. The accommodating groove 411 of the elastic component 4 on the left side faces left, and the accommodating groove 411 of the elastic component 4 on the right side faces right; one of the connection ear portions 32 on the left side is correspondingly accommodated in the accommodating groove 411 of the elastic component 4 on the left side and is in abutting cooperation with the corresponding elastic piece structure 42, and one of the connection ear portions 32 on the right side is correspondingly accommodated in the accommodating groove 411 of the elastic component 4 on the right side and is in abutting cooperation with the corresponding elastic piece structure 42.

[0122] As Figure 2As shown in the figure, taking the number of battery cells 1 being set to three as an example, the three battery cells 1 are arranged in sequence in the front - rear direction on a horizontal plane. On the upper side of each battery cell 1, there are two pole columns 11 arranged at intervals in the left - right direction. The connection lines of the six pole columns 11 on the horizontal plane form a rectangle; the number of connecting pieces 3 is set to two. One connecting piece 3 is horizontally laid on the two pole columns 11 at the left rear and the left middle and is connected to the two pole columns 11 by welding or other means. The other connecting piece 3 is horizontally laid on the two pole columns 11 at the right front and the right middle and is connected to the two pole columns 11 by welding or other means; on the right - hand edge of the connecting piece 3 on the left, there are two connecting lugs 32 arranged at intervals in the front - rear direction. On the left - hand edge of the connecting piece 3 on the right, there are two connecting lugs 32 arranged at intervals in the front - rear direction; the circuit board 21 is arranged between the two connecting pieces 3 on the left and right. On the first side part 211 (i.e., the left - hand part) of the circuit board 21, there is an electrical connection terminal, and on the second side part 212 (i.e., the right - hand part) of the circuit board 21, there is an electrical connection terminal; each electrical connection terminal is correspondingly connected with an elastic component 4. The accommodating groove 411 of the elastic component 4 on the left opens towards the left, and the accommodating groove 411 of the elastic component 4 on the right opens towards the right; the connecting lug 32 in the middle on the left is correspondingly accommodated in the accommodating groove 411 of the elastic component 4 on the left and is in abutting and cooperating with the corresponding elastic piece structure 42. The connecting lug 32 in the middle on the right is correspondingly accommodated in the accommodating groove 411 of the elastic component 4 on the right and is in abutting and cooperating with the corresponding elastic piece structure 42.

[0123] Based on the above settings, the electrical connection between multiple battery cells 1 and the same circuit board 21 can be realized, and the overall structure of the battery device is optimized, making the arrangement of each component more compact and reducing the unnecessary occupation of space. When the number of battery cells 1 is set to more than three, the size of the connecting piece 3, the size of the circuit board 21, the number of connecting lugs 32, the number of elastic components 4, and the number of electrical connection terminals can be correspondingly adjusted according to the above - mentioned structural arrangement form to realize the electrical connection between the battery cell 1 and the circuit board 21, which will not be elaborated here.

[0124] In some embodiments, referring to Figures 1 to 5 , the data acquisition component 2 is provided with a positioning hole 22, and the elastic component 4 is provided with a boss structure 43. The boss structure 43 is inserted into the positioning hole 22.

[0125] Through the limiting cooperation between the boss structure 43 and the positioning hole 22, the preliminary positioning between the elastic component 4 and the data acquisition component 2 can be realized, which is more convenient for connecting and fixing the elastic component 4 and the data acquisition component 2, and improves the relative position accuracy between the two.

[0126] Specifically, when the data acquisition component 2 includes a circuit board 21, the positioning holes 22 can be formed in the circuit board 21.

[0127] In some embodiments, referring to Figures 1 to 5 , the boss structure 43 is set as a welding leg, and the boss structure 43 is fixedly welded to the data acquisition component 2.

[0128] By setting the boss structure 43 as a welding leg, while the boss structure 43 can be used to achieve the preliminary positioning between the elastic component 4 and the data acquisition component 2, the boss structure 43 can be directly welded to the data acquisition component 2, so that the connection and fixation between the elastic component 4 and the data acquisition component 2 can be conveniently realized.

[0129] Specifically, when the elastic component 4 includes a housing 41 and a shrapnel structure 42, the boss structure 43 can be arranged on the housing 41 and electrically connected to the shrapnel structure 42; the data acquisition component 2 includes a circuit board 21, and the boss structure 43 can be welded to the electrical connection end of the circuit board 21, so that while realizing the connection and fixation between the elastic component 4 and the data acquisition component 2, the electrical connection between the data acquisition component 2 and the battery cell 1 can be realized.

[0130] In some embodiments, referring to Figures 1 to 5 , the data acquisition component 2 includes a circuit board 21, and the positioning holes 22 penetrate through the circuit board 21; the end of the boss structure 43 is fixedly welded to the circuit board 21.

[0131] Specifically, taking the orientation shown in Figure 1 , Figure 4 and Figure 5 as an example, the circuit board 21 includes upper and lower side surfaces. The main body part of the elastic component 4 is located on the upper side surface of the circuit board 21, and the boss structure 43 extends downward from the bottom of the elastic component 4; since the positioning holes 22 penetrate through the circuit board 21 in the up and down direction, when the boss structure 43 is inserted and fitted into the positioning holes 22, the end of the boss structure 43 (i.e., the lower end part of the boss structure 43) will be exposed on the lower side surface of the circuit board 21. In this way, the boss structure 43 can be welded and fixed to the electrical connection end of the circuit board 21 on the lower side surface of the circuit board 21. This setting method is more convenient for welding operations, and there is no need to perform welding operations on the side where the main body part of the elastic component 4 is located (i.e., the upper side surface of the circuit board 21), so as to avoid interference with the main body part of the elastic component 4.

[0132] In some embodiments, referring to Figure 1 and Figure 6, the battery device further includes a temperature sensor 6, which is electrically connected to the data acquisition component 2. The temperature sensor 6 is used to obtain the temperature parameter of the battery cell 1 and transmit it to the data acquisition component 2. By setting the temperature sensor 6, the temperature condition of the battery cell 1 can be monitored, and the operating condition of the battery cell 1 can be reflected through the temperature parameter, so that intervention can be carried out in time when an abnormality occurs. Specifically, the temperature sensor 6 can adopt an NTC (Negative Temperature Coefficient Thermistor) sensor.

[0133] In some embodiments, referring to Figure 1 and Figure 6 , the data acquisition component 2 is provided with a monitoring through hole 7, and the monitoring through hole 7 is arranged facing the battery cell 1.

[0134] By setting the monitoring through hole 7, it is convenient for the staff to observe the condition of the battery cell 1 in the area covered by the data acquisition component 2 through the monitoring through hole 7, and avoid the data acquisition component 2 from blocking the battery cell 1. In addition, in practical applications, the battery cell 1 usually transfers the temperature to the temperature sensor 6 in the previous embodiment through a heat conduction pad; by setting the monitoring through hole 7, it is possible to conveniently detect whether the position of the heat conduction pad is shifted.

[0135] In some embodiments, referring to Figures 1 to 6, the battery device includes battery cells 1, a data acquisition component 2, a connecting piece 3, and an elastic component 4; the connecting piece 3 is connected to the pole 11 of the battery cell 1; the elastic component 4 is connected to the data acquisition component 2; the elastic component 4 is abutted against the connecting piece 3 based on an elastic force to achieve electrical connection between the data acquisition component 2 and the battery cell 1; the elastic component 4 includes a housing 41 and a shrapnel structure 42; the shrapnel structure 42 is connected to the housing 41, the shrapnel structure 42 is connected to the data acquisition component 2, and the shrapnel structure 42 is abutted against the connecting piece 3 based on an elastic force; the shrapnel structure 42 includes a first shrapnel 421 and a second shrapnel 422, the first shrapnel 421 and the second shrapnel 422 form a clamping structure, and the connecting piece 3 is clamped in the clamping structure; the first shrapnel 421 has a first arched structure 4211, the protruding direction of the first arched structure 4211 faces the second shrapnel 422, and the first arched structure 4211 is in abutting cooperation with the connecting piece 3; the second shrapnel 422 has a second arched structure 4221, the protruding direction of the second arched structure 4221 faces the first shrapnel 421, and the second arched structure 4221 is in abutting cooperation with the connecting piece 3; the connecting piece 3 is provided with a limiting hole 31, the housing 41 is provided with a positioning pin 5, and the positioning pin 5 is inserted and fitted in the limiting hole 31; the housing 41 is provided with a receiving groove 411, at least part of the shrapnel structure 42 is arranged in the receiving groove 411, and at least part of the positioning pin 5 is arranged in the receiving groove 411; the positioning pin 5 has a first pin section and a second pin section, the first pin section is sleeved on the second pin section, the second pin section can axially move relative to the first pin section, and at least one of the first pin section and the second pin section is used to abut against the hole wall of the limiting hole 31 in the radial direction; the positioning pin 5 further includes an elastic resetting member, one end of the elastic resetting member is connected to the first pin section, the other end of the elastic resetting member is connected to the second pin section, and the elastic resetting member is used to drive the second pin section to axially move in a direction away from the first pin section under an elastic force; the housing 41 has a first housing part 412 and a second housing part 413 arranged at intervals, and the area between the first housing part 412 and the second housing part 413 constitutes the receiving groove 411; the positioning pin 5 protrudes from the first housing part 412, the second housing part 413 is provided with a first adjustment through hole 4131, and the first adjustment through hole 4131 is arranged opposite to the positioning pin 5; the second housing part 413 is provided with a second adjustment through hole 4132, and the second adjustment through hole 4132 is arranged opposite to the shrapnel structure 42; the data acquisition component 2 includes a circuit board 21, the circuit board 21 is arranged perpendicular to the axial direction of the pole 11, the housing 41 is arranged on the circuit board 21, and the housing 41 is provided with a receiving groove 411, and the shrapnel structure 42 is arranged in the receiving groove 411; the connecting piece 3 is arranged perpendicular to the axial direction of the pole 11, at least part of the connecting piece 3 is arranged in the receiving groove 411, and the connecting piece 3 is in abutting cooperation with the shrapnel structure 42; the battery device includes at least two battery cells 1, the at least two battery cells 1 are arranged in a first-plane array, the poles 11 of the at least two battery cells 1 are perpendicular to the first plane, and the poles 11 of the at least two battery cells 1 are connected to the connecting piece 3;The connecting piece 3 has a connecting ear portion 32, the connecting ear portion 32 is arranged in the accommodating groove 411, and the connecting ear portion 32 is in abutting cooperation with the elastic piece structure 42; the battery device includes at least two elastic components 4, and the connecting piece 3 passes through the accommodating grooves 411 of the at least two elastic components 4; the circuit board 21 has at least two electrical connection ends, and the at least two electrical connection ends are respectively connected to the elastic piece structures 42 of the at least two elastic components 4; the circuit board 21 has a first side portion 211 and a second side portion 212 which are oppositely arranged, at least one electrical connection end is arranged on the first side portion 211, and at least one electrical connection end is arranged on the second side portion 212; the battery device includes at least two connecting pieces 3, at least one connecting piece 3 is adjacently arranged with the first side portion 211, and at least one connecting piece 3 is adjacently arranged with the second side portion 212; the data acquisition component 2 is provided with a positioning hole 22, the elastic component 4 is provided with a boss structure 43, and the boss structure 43 is inserted into the positioning hole 22; the boss structure 43 is arranged as a welding leg, and the boss structure 43 is fixedly welded to the data acquisition component 2; the positioning hole 22 penetrates through the circuit board 21; the end of the boss structure 43 is fixedly welded to the circuit board 21; the battery device further includes a temperature sensor 6, the temperature sensor 6 is electrically connected to the data acquisition component 2, and the temperature sensor 6 is used for acquiring the temperature parameter of the battery cell 1 and transmitting it to the data acquisition component 2; the data acquisition component 2 is provided with a monitoring through hole 7, and the monitoring through hole 7 is arranged facing the battery cell 1;

[0136] The embodiment of the present application further provides an electrical device, please refer to Figures 1 to 6 , and the electrical device includes the battery device in any one of the above embodiments.

[0137] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery devices, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, electric tools, vehicles, ships, and spacecrafts, etc. For example, spacecrafts include airplanes, rockets, space shuttles, and spaceships, etc. Since the electrical devices in this embodiment adopt all the technical solutions of the above-mentioned embodiments, they at least have all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, that is, the relative fixation between the data acquisition component 2 and the battery cell 1 is completed in a convenient and easy-to-operate manner, and at the same time, the electrical connection between the data acquisition component 2 and the battery cell 1 is realized; because the elastic contact method between the elastic component 4 and the connecting piece 3 has a high tolerance, it can effectively compensate for the flatness error of the contact part between the elastic component 4 and the connecting piece 3. Therefore, even if the matching accuracy between the elastic component 4 and the connecting piece 3 is low, the deviation between the two can be eliminated by means of the elastic force of the elastic component 4, ensuring that the elastic component 4 can be closely attached to the connecting piece 3, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection. This solution reduces the requirement for the matching accuracy during the connection between the battery cell 1 and the data acquisition component 2 and improves the yield of the battery product; at the same time, since the elastic component 4 can be separated from the connecting piece 3, it is more convenient to disassemble and replace the data acquisition component 2 from the battery cell 1 later, without having to scrap the entire battery pack, thereby reducing the maintenance cost of the battery device and reducing the waste of resources.

[0138] The embodiments of the present application also provide a battery cell connection structure. Please refer to Figures 1 to 6 , the battery cell connection structure includes:

[0139] Connecting piece 3, which is used to connect the pole 11 of the battery cell 1;

[0140] Elastic component 4, which is used to connect the data acquisition component 2; the elastic component 4 abuts against the connecting piece 3 based on the elastic force to realize the electrical connection between the data acquisition component 2 and the battery cell 1.

[0141] In this embodiment, the battery cell 1 is the energy source of the entire battery device, and its structure and working principle can refer to the prior art and will not be elaborated here; the pole 11 of the battery cell 1 is used to connect to an external circuit to realize the output and input of electric energy.

[0142] The data acquisition component 2 is used to collect relevant parameters (such as voltage, temperature, etc.) of the battery cell 1 and transmit them to an external management system for monitoring and managing the operating status of the battery. The data acquisition component 2 may include a carrier and electronic components such as chips, sensors, and communication interfaces integrated on the carrier. Its specific structural form can be designed as a rigid circuit board, a flexible circuit board, or a highly integrated micro-module according to actual application requirements, which is not limited here.

[0143] The connecting piece 3 is connected to the terminal post 11 of the battery cell 1 to achieve electrical connection between the battery cell 1 and an external circuit or other components. The material and shape of the connecting piece 3 can be designed according to the specifications, arrangement method of the terminal post 11, and actual connection requirements. In this embodiment, the connecting piece 3 can be made of a metal material with conductivity and certain mechanical strength, such as copper, aluminum, etc., to form a bus bar, and its shape is set as a sheet structure adapted to the terminal post 11, and can be connected and fixed to the terminal post 11 by means such as welding.

[0144] The elastic component 4 has conductivity. The elastic component 4 can be connected to the data acquisition component 2 by means such as welding, locking, snap connection, etc., and the elastic component 4 has a certain degree of freedom of movement relative to the data acquisition component 2 after connection. In this way, the movable part of the elastic component 4 can abut against the connecting piece 3 based on its own elastic force to form a connection path between the terminal post 11, the connecting piece 3, the elastic component 4, and the data acquisition component 2, so as to achieve electrical connection between the data acquisition component 2 and the battery cell 1. Among them, the elastic component 4 can be set in any structural form that can provide elastic force to the outside based on its own deformation. For example, it can be set as an elastic single-piece structure, one end of which is fixedly connected to the data acquisition component 2 and the other end abuts against the connecting piece 3 through elastic deformation; the elastic component 4 can also be set as a spring structure, one end of which is connected to the data acquisition component 2 and the other end abuts against the connecting piece 3 based on elastic force; the elastic component 4 can also be set as structural forms such as an elastic rubber pad, an elastic buckle, and an elastic jaw; in actual application, as long as it is ensured that the elastic component 4 can abut against the connecting piece 3 based on its own elastic force and achieve electrical connection between the data acquisition component 2 and the battery cell 1, it is not limited here.

[0145] Based on the above settings, during actual assembly, the elastic component 4 can be first connected to the data acquisition component 2, and then the movable part of the elastic component 4 is abutted against the connecting piece 3 based on the elastic force. Finally, the connecting piece 3 is connected to the pole 11 of the battery cell 1. In this way, the relative fixation between the data acquisition component 2 and the battery cell 1 is completed in a convenient and easy-to-operate manner, and at the same time, the electrical connection between the data acquisition component 2 and the battery cell 1 is realized. It should be noted that the elastic contact mode between the elastic component 4 and the connecting piece 3 has a high tolerance, which can effectively compensate for the flatness error of the contact part between the elastic component 4 and the connecting piece 3. Even if the matching accuracy between the elastic component 4 and the connecting piece 3 is low, the deviation between the two can be eliminated by means of the elastic force of the elastic component 4, ensuring that the elastic component 4 can closely fit on the connecting piece 3, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection; this connection form reduces the requirement for the matching accuracy. During the design and assembly debugging process, it is only necessary to ensure good connection between the pole 11 and the connecting piece 3, without having to consider too much the flatness error between the connecting piece 3 and the elastic component 4.

[0146] It can be seen that in the cell connection structure provided in this embodiment, the connecting piece 3 is connected to the pole 11 of the battery cell 1, the elastic component 4 is connected to the data acquisition component 2, and the elastic component 4 can be abutted against the connecting piece 3 based on the elastic force. In this way, the relative fixation between the data acquisition component 2 and the battery cell 1 is completed in a convenient and easy-to-operate manner, and at the same time, the electrical connection between the data acquisition component 2 and the battery cell 1 is realized; due to the high tolerance of the elastic contact mode between the elastic component 4 and the connecting piece 3, which can effectively compensate for the flatness error of the contact part between the elastic component 4 and the connecting piece 3, even if the matching accuracy between the elastic component 4 and the connecting piece 3 is low, the deviation between the two can be eliminated by means of the elastic force of the elastic component 4, ensuring that the elastic component 4 can closely fit on the connecting piece 3, which can avoid the problem of poor contact to a certain extent and improve the reliability of the electrical connection. This solution reduces the requirement for the matching accuracy during the connection between the battery cell 1 and the data acquisition component 2, and improves the yield of the battery product; at the same time, since the elastic component 4 can be separated from the connecting piece 3, it is more convenient to disassemble and replace the data acquisition component 2 from the battery cell 1 later, without having to scrap the entire battery pack, thus reducing the maintenance cost of the battery device and reducing the waste of resources.

[0147] It should be noted that for other contents of the battery device, electrical equipment and cell connection structure disclosed in this application, reference can be made to the prior art and will not be elaborated here.

[0148] The above are only optional embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structural transformation made under the technical concept of the present application by using the content of the specification and drawings of the present application, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: The battery device comprises: Battery cells; Data collection components; A connecting piece, the connecting piece is connected to the pole of the battery cell; An elastic component is connected to the data acquisition component; the elastic component abuts against the connecting piece based on elastic force to achieve electrical connection between the data acquisition component and the battery cell.

2. The battery device according to claim 1, characterized in that: The elastic component includes a shell and a spring structure; the spring structure is connected to the shell, the spring structure is connected to the data acquisition component, and the spring structure abuts against the connecting piece based on elastic force.

3. The battery device according to claim 2, characterized in that: The spring sheet structure includes a first spring sheet and a second spring sheet. The first spring sheet and the second spring sheet form a clamping structure, and the connecting sheet is clamped in the clamping structure.

4. The battery device according to claim 3, characterized in that: The first elastic piece has a first arched structure, the protrusion direction of the first arched structure faces the second elastic piece, and the first arched structure is in abutment with the connecting piece; And / or, the second elastic piece has a second arch structure, the protrusion direction of the second arch structure faces the first elastic piece, and the second arch structure is in abutment with the connecting piece.

5. The battery device according to claim 2, characterized in that: The connecting piece is provided with a limiting hole, and the housing is provided with a positioning pin, and the positioning pin is plugged and matched in the limiting hole.

6. The battery device according to claim 5, characterized in that: The shell is provided with a receiving groove, the spring structure is at least partially arranged in the receiving groove, and the positioning pin is at least partially arranged in the receiving groove; the positioning pin has a first pin segment and a second pin segment, the first pin segment is sleeved on the second pin segment, the second pin segment can move axially relative to the first pin segment, and at least one of the first pin segment and the second pin segment is used to abut against the hole wall of the limiting hole in the radial direction.

7. The battery device according to claim 6, characterized in that: The positioning pin also includes an elastic reset member, one end of which is connected to the first pin segment, and the other end of which is connected to the second pin segment, and the elastic reset member is used to drive the second pin segment to move axially in a direction away from the first pin segment under elastic force.

8. The battery device according to claim 6, characterized in that: The housing comprises a first housing portion and a second housing portion which are spaced apart from each other, and the area between the first housing portion and the second housing portion constitutes the accommodation groove; The positioning pin is protrudingly arranged on the first housing portion, and the second housing portion is provided with a first adjustment through hole, and the first adjustment through hole is arranged opposite to the positioning pin; And / or, the second shell portion is provided with a second adjustment through hole, and the second adjustment through hole is arranged opposite to the spring structure.

9. The battery device according to claim 2, characterized in that: The data acquisition component includes a circuit board, which is arranged perpendicular to the axial direction of the pole, and the shell is arranged on the circuit board. The shell is provided with a receiving groove, and the spring structure is arranged in the receiving groove; the connecting piece is arranged perpendicular to the axial direction of the pole, and the connecting piece is at least partially arranged in the receiving groove, and the connecting piece is abutted and matched with the spring structure.

10. The battery device according to claim 9, characterized in that: The battery device comprises at least two battery cells, at least two of the battery cells are arranged in an array in a first plane, the poles of at least two of the battery cells are perpendicular to the first plane, and the poles of at least two of the battery cells are connected to the connecting sheet.

11. The battery device according to claim 9, characterized in that: The connecting piece has a connecting ear portion, the connecting ear portion is arranged in the accommodating groove, and the connecting ear portion is abutted and matched with the elastic sheet structure.

12. The battery device according to claim 9, characterized in that: The battery device includes at least two elastic components, and the connecting piece is inserted into the receiving grooves of at least two elastic components; the circuit board has at least two electrical connection ends, and at least two electrical connection ends are connected to the spring structures of at least two elastic components in a one-to-one correspondence.

13. The battery device according to claim 12, characterized in that: The circuit board has a first side portion and a second side portion that are arranged opposite to each other, the first side portion is provided with at least one electrical connection terminal, and the second side portion is provided with at least one electrical connection terminal; the battery device includes at least two connecting plates, at least one connecting plate is arranged adjacent to the first side portion, and at least one connecting plate is arranged adjacent to the second side portion.

14. The battery device according to any one of claims 1 to 13, characterized in that: The data acquisition component is provided with a positioning hole, and the elastic component is provided with a boss structure, and the boss structure is inserted in the positioning hole.

15. The battery device according to claim 14, characterized in that: The boss structure is configured as a welding foot, and the boss structure is fixed to the data acquisition component by welding.

16. The battery device according to claim 15, characterized in that: The data acquisition component comprises a circuit board, the positioning hole passes through the circuit board; and the end of the boss structure is welded and fixed to the circuit board.

17. The battery device according to claim 1, characterized in that: The battery device further includes a temperature sensor, the temperature sensor is electrically connected to the data acquisition component, and the temperature sensor is used to obtain the temperature parameters of the battery cell and transmit them to the data acquisition component; And / or, the data acquisition component is provided with a monitoring through hole, and the monitoring through hole is arranged toward the battery cell.

18. An electrical equipment, characterized in that: The electrical equipment comprises the battery device according to any one of claims 1 to 17.

19. A battery cell connection structure, characterized in that: The battery cell connection structure comprises: A connecting piece, the connecting piece is used to connect the pole of the battery cell; An elastic component is used to connect the data acquisition component; the elastic component abuts against the connecting piece based on elastic force to achieve electrical connection between the data acquisition component and the battery cell.

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