Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of power battery manufacturing, the battery device comprises a plurality of battery monomers, a bus member and a circuit board, the plurality of battery monomers are arranged along a first direction; the confluence piece is at least electrically connected with one electrode terminal of one battery monomer; the circuit board comprises a board body and a conductive piece electrically connected with the board body, and the board body extends in the first direction; a clamping part is arranged on one side, deviating from the battery single body, of the confluence piece, a clamping position is arranged on the conductive piece, the confluence piece and the conductive piece are clamped through the clamping part and the clamping position, and the conductive piece is electrically connected with the confluence piece. After the battery device is tested to be unqualified, the circuit board can be detached to maintain parts needing to be maintained, so that the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power battery manufacturing, in particular to a battery device and an electric equipment. BACKGROUND

[0002] In the related art, in the manufacturing of the battery module of the battery device, the electrode terminals of adjacent battery monomers are electrically connected with the nickel sheets on the circuit board through the busbar. The connection between the busbar and the nickel sheet is achieved by welding. If the circuit board or the battery monomer fails, the entire battery pack needs to be replaced, resulting in high maintenance cost. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a battery device and an electric equipment, aiming to at least improve the technical problem of high maintenance cost of the battery device in the related art.

[0004] To achieve the above-mentioned purpose, according to some embodiments of the present application, a battery device is provided, comprising a plurality of battery monomers, a busbar and a circuit board, the plurality of battery monomers are arranged along a first direction; the busbar is electrically connected with at least one electrode terminal of the battery monomer; the circuit board comprises a board body and a conductive piece electrically connected with the board body, the board body is arranged along the first direction; a clamping portion is arranged on the side of the busbar away from the battery monomer, a clamping site is arranged on the conductive piece, the busbar and the conductive piece are clamped through the clamping portion and the clamping site, and the conductive piece is electrically connected with the busbar.

[0005] By arranging the clamping portion on the busbar and the clamping site on the conductive piece, the busbar and the conductive piece are clamped through the clamping portion and the clamping site, and the conductive piece is electrically connected with the busbar, which facilitates the disassembly of the battery device without damaging the components. After testing failure, the circuit board can be disassembled for maintenance of the components that need to be maintained, thereby reducing the maintenance cost.

[0006] In some embodiments, the clamping portion comprises a groove, and a first protruding end and a second protruding end arranged in the groove;

[0007] The opening of the groove is arranged towards the conductive piece, the first protruding end is arranged extending into the groove from the groove side wall, and the second protruding end is arranged extending into the groove from the groove bottom wall towards the opening;

[0008] The clamping site comprises a first notch and a through hole, the first notch extends to the outer edge of the conductive piece, the first notch is arranged corresponding to the position of the first protruding end, the through hole is arranged corresponding to the position of the second protruding end, under the condition that the busbar and the conductive piece are clamped, the first protruding end is clamped in the first notch, and the second protruding end is clamped in the through hole.

[0009] By setting the recess on the busbar and setting the conductive part in the recess, the possibility of connection failure of the busbar and the conductive part in the case of collision can be reduced. By setting the first protruding end and the second protruding end in the recess of the busbar and setting the first notch and the through hole on the conductive part respectively matched with the first protruding end and the second protruding end, the conductive part can be positioned and connected from two points, which can improve the mechanical positioning accuracy and the reliability of the clamping.

[0010] In some embodiments, the number of the first protruding ends is two, and the two first protruding ends are respectively arranged on two wall surfaces of the slot side wall oppositely arranged along the first direction.

[0011] The number of the first notches is two, and the two first notches are respectively arranged on two sides of the conductive part along the first direction. The two first notches are respectively arranged corresponding to the two first protruding ends, and the first notches are arranged spaced apart from the through hole.

[0012] By arranging two oppositely arranged first protruding ends, the conductive part can be clamped and positioned from both sides of the conductive part, further improving the positioning accuracy and the firmness of the clamping.

[0013] In some embodiments, the conductive part includes a clamping section and an extension section, the extension section connects the clamping section and the plate body, the clamping section is provided with the clamping position, and the recess side facing the plate body is provided with a second notch for the extension section to pass through.

[0014] By arranging the second notch penetrating the slot side wall on the side of the recess facing the plate body, the extension section of the conductive part can extend from the second notch to the plate body for electrical connection. The first notch and the through hole are arranged on the clamping section, and the extension section can be a whole plate, which can improve the strength of the whole conductive part.

[0015] In some embodiments, the two first protruding ends divide the recess into a first sub-recess, a second sub-recess and a third sub-recess, the second sub-recess is communicated between the first sub-recess and the third sub-recess, the bottom surface of the third sub-recess is provided with the second protruding end, and the third sub-recess is arranged close to the second notch.

[0016] The clamping section includes a first sub-section, a second sub-section and a third sub-section connected in sequence, the third sub-section is connected with the extension section, the through hole is arranged on the third sub-section, the first sub-section is arranged in the first sub-recess, the second sub-section is arranged in the second sub-recess, and the third sub-section is arranged in the third sub-recess.

[0017] By arranging a chamfer on the end of the first sub-section, the possibility of scratching the internal components of the battery device by the conductive part can be reduced.

[0018] In some embodiments, the second protruding end comprises a connecting portion and an abutting portion, the connecting portion connects the groove bottom wall of the groove and the abutting portion, and the abutting portion is arranged in a spaced manner with the groove bottom wall;

[0019] The connecting portion, the abutting portion and the groove bottom wall are arranged as a sliding gap for the conductive piece to slide in a direction away from the side of the second gap, and the abutting portion is used to abut with the conductive piece to block the conductive piece from sliding out of the opening of the groove.

[0020] By designing the structure of the second protruding end, a sliding gap is arranged between the second protruding end and the groove bottom wall, which increases the Z-direction limiting of the conductive piece, and can reduce the possibility of the conductive piece falling during use after installation.

[0021] In some embodiments, a first interval is arranged between the first protruding end and the groove bottom wall; and / or,

[0022] The clamping portion further comprises a third protruding end, the third protruding end is arranged on the side of the groove side wall away from the second gap, and a second interval is arranged between the third protruding end and the groove bottom wall.

[0023] By arranging a first interval between the first protruding end and the groove bottom wall, or a second interval between the third protruding end and the groove bottom wall, the conductive piece can be slid into the first interval or the second interval, which increases the Z-direction limiting of the conductive piece and improves the firmness of the installation of the conductive piece.

[0024] In some embodiments, the battery device further comprises a glue layer, and the current collecting piece and the conductive piece are bonded by the glue layer.

[0025] By arranging a glue layer in the groove to bond the current collecting piece and the conductive piece, the connection strength can be improved, and the possibility of friction deformation of the conductive piece and the current collecting piece can be reduced.

[0026] In some embodiments, the current collecting piece comprises a first sub-current collecting piece and a second sub-current collecting piece, and the second sub-current collecting piece is located on both sides of the first sub-current collecting piece along a first direction.

[0027] The first sub-current collecting piece is provided with two first electrode interfaces, and the two first electrode interfaces are respectively connected with two electrode terminals of two adjacent battery monomers with opposite polarities, and the second sub-current collecting piece is provided with a second electrode interface, and the second electrode interface is connected with one electrode terminal of one battery monomer.

[0028] By arranging the current collecting piece to comprise a first sub-current collecting piece and a second sub-current collecting piece, signal connection with the positive electrode terminal and the negative electrode terminal of the battery monomer can be achieved.

[0029] In some embodiments, the number of the bus bars is plural;

[0030] The bus bars are respectively arranged on two sides of the plate body along a second direction, the second direction being perpendicular to the first direction; the number of the bus bars is the same as the number of the conductive pieces and the bus bars and the conductive pieces are arranged one by one.

[0031] By arranging the bus bars on two sides of the plate body, the bus bars and the battery monomers can be connected from two sides of the plate body respectively, thereby saving the number of the plate bodies and saving the space.

[0032] In some embodiments, the bus bars are copper adapter plates or aluminum adapter plates, and the conductive pieces are nickel plates.

[0033] By using aluminum plates or copper plates to make the bus bars, the cost is low and the performance is good.

[0034] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the following specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0035] 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 needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to the structures shown in these drawings without creating any creative labor.

[0036] Figure 1 Structure diagram of a vehicle of some embodiments of the present application;

[0037] Figure 2 Exploded structure diagram of a battery device of some embodiments of the present application;

[0038] Figure 3 Structure diagram of a bus bar and a circuit board of a battery device of some embodiments of the present application from one perspective;

[0039] Figure 4 Structure diagram of a bus bar of a battery device of some embodiments of the present application; Figure 3 Enlarged structure diagram at A;

[0040] Figure 5 Structure diagram of a bus bar of a battery device of some embodiments of the present application;

[0041] Figure 6 Structure diagram of a bus bar of a battery device of some embodiments of the present application; Figure 5An enlarged structural schematic view of B;

[0042] Figure 7 A partial structural schematic view of a clamping portion of a busbar of a battery device according to some embodiments of the present application;

[0043] Figure 8 A structural schematic view of a conductive member of a battery device according to some embodiments of the present application;

[0044] Figure 9 A partial structural schematic view of a battery device according to some embodiments of the present application;

[0045] Figure 10 A structural schematic view of a busbar and a circuit board of a battery device according to some embodiments of the present application from another perspective.

[0046] Brief Description of the Drawings

[0047] 1000, vehicle;

[0048] 100, battery device; 200, controller; 300, motor;

[0049] 10, box body; 11, first portion; 12, second portion;

[0050] 20, battery cell;

[0051] 30, busbar; 301, first sub-busbar; 302, second sub-busbar; 303, clamping portion; 31, groove; 311, second notch; 312, first sub-groove; 313, second sub-groove; 314, third sub-groove; 315, groove bottom wall; 316, groove side wall; 317, opening; 32, first protruding end; 33, second protruding end; 331, connecting portion; 332, abutting portion; 34, sliding gap; 35, third protruding end; 36, first interval; 37, second interval; 40, circuit board; 41, board body; 42, conductive member; 421, clamping segment; 4211, first notch; 4212, through hole; 4213, first sub-segment; 42131, chamfer; 4214, second sub-segment; 4215, third sub-segment; 422, extension segment; 50, adhesive layer.

[0052] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0053] With reference to the accompanying drawings, the technical solutions in the embodiments will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall into the scope of the present application.

[0054] It should be noted that all directional indications, such as upper, lower, left, right, front, back, etc., are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0055] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection claimed by the present application. It should be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application.

[0058] In the present application, the description of "up", "down", "front", "back", "left", "right" and the like is based on the orientation shown in the drawings, and is only used to explain the relative position relationship between components in the posture shown in the drawings, and if the certain posture changes, the directional indications also change accordingly.

[0059] At present, from the development of market situation, the application of power battery is more and more extensive. Power battery is not only applied to energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0060] The current battery device, after the completion of the circuit board installation, if failure occurs in the test, the entire circuit board and battery monomer need to be replaced, which is a great loss. The applicant found that the battery device includes a plurality of battery monomers, the battery monomers are provided with electrode terminals, one battery monomer generally has two electrode terminals, which can be positive and negative electrode terminals, the electrode terminals and the conductive pieces on the circuit board are electrically connected through the busbar, the connection between the conductive pieces and the busbar is welding. The conductive pieces and the busbar are difficult to disassemble, or even if they are disassembled, they will be damaged. This leads to the fact that after the test failure, the battery monomers and the circuit board can only be replaced as a whole, which increases the repair and maintenance cost.

[0061] In the embodiments of the present application, the busbar is provided with a clamping portion, the conductive piece is provided with a clamping site, the busbar and the conductive piece are clamped through the clamping portion and the clamping site, and the conductive piece is electrically connected with the busbar. The conductive piece and the busbar are electrically connected through the clamping connection mode, so that when the battery device fails in the test, the circuit board can be disassembled, and the parts that need to be replaced can be replaced, without the need for whole replacement, thereby reducing the maintenance cost.

[0062] Please refer to Figure 1 , Figure 1 The structure schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The electric device can be the vehicle 1000, and the vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, which can be a pure electric vehicle, a hybrid vehicle or a range extended vehicle. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, the head or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation and driving.

[0063] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, to replace or partially replace the fuel or natural gas to provide driving power for the vehicle 1000.

[0064] Please refer to Figure 2 , Figure 2 An exploded structural schematic view of a battery device 100 is provided for some embodiments of the present application. The battery device 100 includes a case 10 and battery cells 20, which are accommodated in the case 10. The case 10 is configured to provide an accommodation space for the battery cells 20, and the case 10 can have various structures. In some embodiments, the case 10 can include a first part 11 and a second part 12, which are coupled to each other to define the accommodation space for the battery cells 20. The second part 12 can have a hollow structure with an open end, and the first part 11 can have a plate structure, which is coupled to the open end of the second part 12 to define the accommodation space together with the second part 12. Alternatively, the first part 11 and the second part 12 can both have a hollow structure with an open end, and the open end of the first part 11 is coupled to the open end of the second part 12. Of course, the case 10 formed by the first part 11 and the second part 12 can have various shapes, such as a cylinder or a cuboid.

[0065] The battery device 100 mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 20, which are connected in series, in parallel, or in a mixed manner by a busbar.

[0066] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 20.

[0067] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 into a separate module. As an example, the battery module can be formed by bundling a plurality of battery cells 20 by a cable tie.

[0068] In some embodiments, the battery device 100 can be a battery pack, which includes a case 10 and one or more battery cell assemblies, which are accommodated in the case 10.

[0069] As an example, the battery cell assembly can be a battery module, which is accommodated in the case 10 by fixing the battery module in the case 10.

[0070] As an example, the battery cell assembly can also be accommodated in the case 10 by directly fixing a plurality of battery cells 20 in the case 10.

[0071] In the battery device 100, the battery cells 20 can be multiple, and the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection, where the mixed connection means that the multiple battery cells 20 are connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and the whole of the multiple battery cells 20 is accommodated in the case 10. Of course, the battery device 100 can also be that the multiple battery cells 20 are connected in series, in parallel, or in a mixed connection to form a battery module, and the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and the whole is accommodated in the case 10. The battery device 100 can further include other structures, for example, the battery device 100 can further include a current collecting component for realizing the electrical connection between the multiple battery cells 20.

[0072] Each of the battery cells 20 can be a secondary battery or a primary battery, and can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be in a cylindrical shape, a flat shape, a cuboid shape, or other shapes.

[0073] The application provides a battery device 100.

[0074] Please refer to Figures 3 to 5 According to some embodiments of the application, the application provides a battery device 100, which includes multiple battery cells 20, a current collecting component 30, and a circuit board 40. The multiple battery cells 20 are arranged along a first direction. The current collecting component 30 is electrically connected to one electrode terminal of at least one battery cell 20. The circuit board 40 includes a board body 41 and a conductive component 42 electrically connected to the board body 41. The board body 41 is arranged to extend along the first direction. The current collecting component 30 is provided with a clamping portion 303 on a side facing away from the battery cells 20. The conductive component 42 is provided with a clamping site. The current collecting component 30 and the conductive component 42 are clamped by the clamping portion 303 and the clamping site, and the conductive component 42 is electrically connected to the current collecting component 30.

[0075] It should be noted that in the embodiments of the application, the first direction is as shown in the X direction in Figure 3 or Figure 8 The second direction is as shown in the Y direction in Figure 3 or Figure 8The first direction and the second direction are perpendicular as shown in the Y direction. Specifically, the plurality of battery monomers 20 can be arranged in one row or in multiple rows. When arranged in multiple rows, the battery monomers 20 in each row are arranged in parallel to each other, and each row of battery monomers 20 is arranged along the first direction. The battery monomers 20 are provided with electrode terminals, and the battery monomers 20 can be soft package batteries. The electrode terminals are two, and the two electrode terminals can be positive terminals or negative terminals. The busbar 30 is electrically connected to at least one positive terminal or negative terminal. The circuit board 40 can be a flexible circuit board. The circuit board 40 includes a board body 41 and a conductive member 42. The board body 41 is provided with circuits and components. The conductive member 42 is electrically connected to the board body 41. The side of the busbar 30 away from the battery monomers 20 is provided with a clamping portion 303, so as to avoid the contact between the conductive member 42 and the electrode terminals of the battery monomers 20. The clamping portion 303 is provided with a clamping position. The detachable connection between the conductive member 42 and the busbar 30 is achieved through the clamping of the clamping portion 303 and the clamping position. The detachable connection is mainly used to facilitate the disassembly of the circuit board 40 after testing. In this way, only the corresponding unqualified components need to be replaced, instead of replacing the battery monomers 20 and the circuit board 40 together. Of course, in order to realize the transmission of electrical signals, the conductive member 42 is electrically connected to the busbar 30 through clamping, and the transmission of electrical signals can be realized. The specific structure of the clamping portion 303 and the clamping position is not limited in the present application. As long as the structure can realize the detachable connection between the busbar 30 and the conductive member 42 and realize electrical connection, it is within the protection scope of the present application, and is not limited in the present application.

[0076] The clamping portion 303 is arranged on the busbar 30, and the clamping position is arranged on the conductive member 42. The busbar 30 and the conductive member 42 are clamped through the clamping portion 303 and the clamping position, and the conductive member 42 is electrically connected to the busbar 30. The disassembly of the battery device 100 is facilitated, and the components are not damaged. After testing, the circuit board 40 can be disassembled for maintenance of the components that need to be maintained, thereby reducing the maintenance cost.

[0077] Please refer to Figure 6 and Figure 7 In some embodiments, the clamping portion 303 includes a groove 31, a first protruding end 32 and a second protruding end 33 arranged in the groove 31.

[0078] The opening 317 of the groove 31 is arranged towards the conductive member 42. The first protruding end 32 extends from the groove side wall 316 of the groove 31 into the groove 31. The second protruding end 33 extends from the groove bottom wall 315 of the groove 31 towards the opening 317.

[0079] The clamping position includes a first notch 4211 and a through hole 4212. The first notch 4211 extends to the outer edge of the conductive member 42, and is arranged corresponding to the position of the first protruding end 32. The through hole 4212 is arranged corresponding to the position of the second protruding end 33. Under the condition that the bus member 30 and the conductive member 42 are clamped, the first protruding end 32 is clamped in the first notch 4211, and the second protruding end 33 is clamped in the through hole 4212.

[0080] In some battery devices 100, the distance between the circuit board 40 and the top cover is small, such as only 5 mm. Therefore, if the conductive piece 42 of the circuit board 40 is directly mounted on the busbar 30, there is a risk of failure of the connection between the busbar 30 and the conductive piece 42 under the expansion and extrusion, causing the FPC to fail. At the same time, the conductive piece 42 may rub against other components during use of the battery device 100, and there is a possibility of deformation failure. Therefore, the embodiment provides a groove 31 on the busbar 30, which is a recessed groove formed on the side of the busbar 30 facing the battery monomer 20. The opening 317 of the groove 31 is arranged towards the conductive piece 42, that is, towards the side away from the battery monomer 20, so that the conductive piece 42 is conveniently installed from above the groove 31. The conductive piece 42 can be installed in the groove 31, which can increase the distance between the top cover and the circuit board 40, and reduce the risk of failure of the connection between the busbar 30 and the conductive piece 42 under the expansion and extrusion, causing the FPC to fail. At the same time, arranging the conductive piece 42 in the groove 31 reduces the possibility of the conductive piece 42 rubbing against other components of the battery device 100. The first protruding end 32 and the second protruding end 33 are both protruding parts. Specifically, the groove 31 includes a groove bottom wall 315 and a groove side wall 316 extending along the edge of the groove bottom wall 315. The starting point of the first protruding end 32 is on the groove side wall 316 and extends towards the middle position of the groove 31. The second protruding end 33 is arranged on the groove bottom wall 315 and extends upwards towards the opening 317. Correspondingly, the clamping position includes a first notch 4211 and a through hole 4212 formed on the conductive piece 42. The first notch 4211 extends to the outer edge of the conductive piece 42, which means that the first notch 4211 is not a completely enclosed opening, but extends to and penetrates the outer edge of the conductive piece 42. Because the first protruding end 32 is connected with the groove side wall 316, the first notch 4211 is arranged to extend to the outer edge of the conductive piece 42 to facilitate clamping between the two. Specifically, the first protruding end 32 is clamped into the first notch 4211. The second protruding end 33 is a protruding part protruding from the groove bottom wall 315. The through hole 4212 is arranged corresponding to the second protruding end 33. During installation, the second protruding end 33 cooperates with the through hole 4212. The specific installation method is to align the first notch 4211 of the conductive piece 42 with the first protruding end 32, and at the same time, the through hole 4212 is aligned with the second protruding end 33. Then, the conductive piece 42 is installed into the groove 31 from the opening 317 side of the groove 31. The two positions of the first protruding end 32 and the first notch 4211, and the second protruding end 33 and the through hole 4212 are used to position and clamp the conductive piece 42, which is conducive to improving the positioning accuracy and the reliability of the connection.

[0081] By setting the recess 31 on the busbar 30, the conductive piece 42 is arranged in the recess 31, which can reduce the possibility of connection failure of the busbar 30 and the conductive piece 42 in the case of collision. At the same time, the first protruding end 32 and the second protruding end 33 are arranged in the recess 31 of the busbar 30, and the first notch 4211 and the through hole 4212 matched with the first protruding end 32 and the second protruding end 33 are arranged on the conductive piece 42, respectively. The conductive piece 42 can be positioned and connected from two points, which can improve the mechanical positioning accuracy and the reliability of the clamping.

[0082] Please refer to Figure 6 and Figure 7 In some embodiments, the number of first protruding ends 32 is two, and the two first protruding ends 32 are arranged on the two wall surfaces of the groove side wall 316 arranged opposite to each other in the first direction.

[0083] The number of first notches 4211 is two, and the two first notches 4211 are arranged on the two sides of the conductive piece 42 in the first direction. The two first notches 4211 are arranged one by one corresponding to the two first protruding ends 32, and the first notch 4211 is arranged spaced apart from the through hole 4212.

[0084] The first protruding end 32 can be a plate structure or a block structure, and is arranged on the two wall surfaces of the groove side wall 316 arranged opposite to each other, specifically the two wall surfaces arranged opposite to each other in the first direction, and is positioned and connected to the conductive piece 42 from the two sides in the first direction. The conductive piece 42 also corresponds to two first notches 4211, and each first notch 4211 is arranged corresponding to a first protruding end 32. Specifically, the first protruding end 32 can be inserted into the first notch 4211 and clamped with the first notch 4211. The first notch 4211 is arranged spaced apart from the through hole 4212 without being connected. If the deformation of the first notch 4211 during the clamping process of the first notch 4211 and the first protruding end 32 is easily transmitted to the through hole 4212, the design can reduce the influence of the cooperation of the first protruding end 32 and the first notch 4211 on the structure of the through hole 4212, and further reduce the influence on the clamping of the through hole 4212 and the second protruding end 33.

[0085] By arranging two first protruding ends 32 arranged opposite to each other, the conductive piece 42 can be clamped and positioned from both sides of the conductive piece 42, further improving the positioning accuracy and the firmness of the clamping.

[0086] Please refer to Figure 6 and Figure 7 In some embodiments, the conductive piece 42 includes a clamping section 421 and an extension section 422, the extension section 422 connects the clamping section 421 and the plate body 41, the clamping section 421 is provided with a clamping position, and the side of the recess 31 facing the plate body 41 is provided with a second notch 311 for the extension section 422 to pass through.

[0087] It should be noted that the conductive part 42 can be integrally formed as a whole, and the division into the clamping section 421 and the extension section 422 is only for the convenience of description, and does not mean that the conductive part 42 is formed by splicing two sections. The clamping section 421 refers to the part connected with the clamping part 303, specifically the part connected with the groove 31, the first protruding end 32 and the second protruding end 33, and the extension section 422 refers to the part connected with the plate body 41, and the extension section 422 connects the plate body 41 and the clamping section 421. In order to facilitate the installation of the extension section 422, a second notch 311 can be provided on the groove side wall 316 of the side of the groove 31 facing the plate body 41, and the second notch 311 penetrates the groove side wall 316, so that the extension section 422 can pass through the second notch 311 and be connected with the plate body 41.

[0088] By providing the second notch 311 penetrating the groove side wall 316 on the side of the groove 31 facing the plate body 41, the extension section 422 of the conductive part 42 can be conveniently extended from the second notch 311 to the plate body 41 and electrically connected with the plate body 41. The clamping section 421 is provided with the first notch 4211 and the through hole 4212, and the extension section 422 can be a section of a whole plate, so as to improve the strength of the entire conductive part 42.

[0089] Please refer to Figure 6 and Figure 7 In some embodiments, the two first protruding ends 32 divide the groove 31 into a first sub-groove 312, a second sub-groove 313 and a third sub-groove 314, the second sub-groove 313 is communicated between the first sub-groove 312 and the third sub-groove 314, the bottom surface of the third sub-groove 314 is provided with the second protruding end 33, and the third sub-groove 314 is provided close to the second notch 311;

[0090] The clamping section 421 includes a first sub-section 4213, a second sub-section 4214 and a third sub-section 4215 connected in sequence, the third sub-section 4215 is connected with the extension section 422, the through hole 4212 is provided on the third sub-section 4215, the first sub-section 4213 is installed in the first sub-groove 312, the second sub-section 4214 is installed in the second sub-groove 313, and the third sub-section 4215 is installed in the third sub-groove 314.

[0091] The first protruding end 32 is a protruding section provided in the groove 31. According to the positional relationship with the first protruding end 32, in a second direction perpendicular to the first direction, the second direction Figure 6As shown in the Y direction, the groove 31 can be divided into the first sub-groove 312, the second sub-groove 313 and the third sub-groove 314 connected in sequence, the second groove 31 is located between the two first protruding ends 32, and the third groove 31 is arranged close to the second gap 311. The second protruding end 33 is arranged on the groove bottom of the third groove 31. At the same time, the clamping section 421 can be divided into the first sub-section 4213, the second sub-section 4214 and the third sub-section 4215 connected in sequence according to the positional relationship with the first gap 4211, the second sub-section 4214 is located between the two first gaps 4211, the third sub-section 4215 is connected with the extension section 422, the through hole 4212 is arranged in the third sub-section 4215, and then the corresponding sub-groove is connected with the corresponding sub-section, specifically: the first sub-section 4213 is installed in the first sub-groove 312, the second sub-section 4214 is installed in the second sub-groove 313, and the third sub-section 4215 is installed in the third sub-groove 314.

[0092] By dividing the groove 31 into a plurality of sub-grooves and dividing the clamping section 421 into a plurality of sub-sections, the conductive part 42 can be positioned and clamped from multiple positions, further improving the positioning accuracy and connection strength.

[0093] Please refer to Figure 6 In some embodiments, the second protruding end 33 includes a connecting part 331 and an abutting part 332, the connecting part 331 connects the groove bottom wall 315 of the groove 31 and the abutting part 332, and the abutting part 332 is arranged in a spaced manner with the groove bottom wall 315.

[0094] The abutting part 332 is arranged in a spaced manner with the groove bottom wall 315, specifically, the connecting part 331, the abutting part 332 and the groove bottom wall 315 are arranged to form a sliding gap 34 for the conductive part 42 to slide in the direction away from the side of the second gap 311, and the abutting part 332 is used to abut with the conductive part 42 to block the conductive part 42 from sliding off the opening 317 of the groove 31.

[0095] As described above, when the conductive piece 42 is installed, the first notch 4211 of the conductive piece 42 is aligned with the first protruding end 32, the through hole 4212 of the conductive piece 42 is aligned with the second protruding end 33, and the conductive piece 42 is pressed into the recess 31 from the opening 317 of the recess 31. In this way, the conductive piece 42 and / or the bus piece 30 need to have a certain deformation, and the reliability of the clamping can be improved. However, the conductive piece 42 and the bus piece 30 need to be conductive, and are generally made of metal. If the force is too large during the deformation, plastic deformation will occur, which will affect the firmness of the connection between the conductive piece 42 and the bus piece 30, and the conductive piece 42 is easy to slide off from the opening 317 of the recess 31. In a specific embodiment, the connecting portion 331 can be vertically upward, the bottom surface of the connecting portion 331 is connected to the groove bottom wall 315 of the recess 31, and the top surface of the connecting portion 331 is connected to the abutting portion 332. The abutting portion 332 can be horizontally arranged, and can be arranged parallel to the groove bottom wall 315 and spaced a distance therefrom, so that a sliding gap 34 is formed between the connecting portion 331, the abutting portion 332 and the groove bottom wall 315. After the conductive piece 42 is installed into the recess 31, the conductive piece 42 can be slid into the recess 31 towards the side away from the second notch 311, that is, towards the direction of the first sub-groove 312. In this way, the bottom surface of the abutting portion 332 abuts against the conductive piece 42, which is equivalent to limiting the conductive piece 42 in the Z direction, that is, the direction extending from the groove bottom wall 315 to the opening 317 of the recess 31, thereby reducing the possibility of the conductive piece 42 sliding off from the opening 317 of the recess 31.

[0096] By designing the structure of the second protruding end 33, a sliding gap 34 is arranged between the second protruding end 33 and the groove bottom wall 315 of the recess 31, which increases the limitation of the conductive piece 42 in the Z direction, and reduces the possibility of the conductive piece 42 falling off during use after being installed.

[0097] Referring to Figure 7 , it should be noted that Figure 7 is actually Figure 5 an enlarged structural schematic view at B, Figure 7 different structural features are marked. In some embodiments, a first spacing 36 is arranged between the first protruding end 32 and the groove bottom wall 315; and / or,

[0098] The clamping portion 303 further comprises a third protruding end 35, which is arranged on the side of the groove side wall 316 away from the second notch 311. A second spacing 37 is arranged between the third protruding end 35 and the groove bottom wall 315.

[0099] The first interval 36 and the second interval 37 have similar functions as the sliding gap 34. When the first notch 4211 is installed in the first protruding end 32, the conductive member 42 can be further slid into the first interval 36 between the first protruding end 32 and the groove bottom wall 315, so that the bottom surface of the first protruding end 32 abuts against the conductive member 42, thereby increasing the Z-directional limit and improving the firmness of the installation of the conductive member 42. In addition, the second interval 37 can be arranged between the third protruding end 35 and the groove bottom wall 315. When the conductive member 42 is installed in the groove 31, the conductive member 42 can be slid into the groove 31 toward the side away from the second notch 311, so that the first sub-section 4213 of the conductive member 42 is partially slid into the second interval 37. Thus, the bottom surface of the third protruding end 35 abuts against the conductive member 42, which is equivalent to limiting the conductive member 42 in the Z-direction, thereby improving the firmness of the installation of the conductive member 42.

[0100] By arranging the first interval 36 between the first protruding end 32 and the groove bottom wall 315 or the second interval 37 between the third protruding end 35 and the groove bottom wall 315, the conductive member 42 can be slid into the first interval 36 or the second interval 37, thereby increasing the Z-directional limit and improving the firmness of the installation of the conductive member 42.

[0101] Please refer to Figure 8 In some embodiments, the end of the first sub-section 4213 is provided with a chamfer 42131.

[0102] The chamfer 42131 generally refers to a round corner, and the degree of the round corner can be determined according to actual conditions. Of course, those skilled in the art can understand that the chamfer 42131 can also be arranged on the second sub-section 4214 and the third sub-section 4215. The conductive member 42 is generally made of conductive metal, which has a certain hardness. In addition, the sharp corner is easy to scratch other components of the battery device 100, such as a film, during the installation process.

[0103] By arranging the chamfer 42131 at the end of the first sub-section 4213, the possibility of scratching the internal components of the battery device 100 by the conductive member 42 can be reduced.

[0104] Please refer to Figure 9 In some embodiments, the battery device 100 further comprises a glue layer 50, and the conductive member 42 and the busbar 30 are bonded by the glue layer 50.

[0105] In the related art, the conductive piece 42 and the bus piece 30 are connected by welding. Since welding may cause poor welding such as virtual welding, the reliability of the connection between the conductive piece 42 and the bus piece 30 is affected, and the positioning accuracy may be affected due to the deformation of the conductive piece 42 and the bus piece 30 caused by high temperature during the welding process. The mechanical connection mode is adopted in the embodiments of the present application, and the mortise and tenon structure is set to achieve the detachable connection of the conductive piece 42 and the bus piece 30 by clamping the clamping position and the clamping part 303. In theory, the connection strength and positioning accuracy requirements can be met. However, the working conditions during the use of the battery device 100 are relatively complex, and in some harsh conditions, there is a possibility that the connection will be invalid due to impact or collision. For example, the conductive piece 42 is displaced in vibration, and at the same time, the deformation caused by friction between the conductive piece 42 and the bus piece 30 is prevented. Therefore, in order to improve the connection strength of the bus piece 30 and the conductive piece 42, after the conductive piece 42 is installed to the clamping part 303 of the bus piece 30, glue is dripped into the groove 31, and when the glue solidifies, a glue layer 50 is formed to bond the bus piece 30 and the conductive piece 42, thereby further improving the connection strength of the bus piece 30 and the conductive piece 42. In some specific embodiments, the glue is conductive glue. It should be noted that the glue layer 50 will not peel off in the actual working conditions of the battery device 100, but will peel off under the action of external environment set by human, such as using special means such as high temperature and special solvent, so as to ensure that the glue layer 50 will not peel off in the normal use process of the battery device 100, and the detachable connection can be realized by adding external conditions when disassembly is required.

[0106] By setting the glue layer 50 in the groove 31, the bus piece 30 and the conductive piece 42 are bonded, which can not only improve the connection strength, but also reduce the possibility of friction deformation of the conductive piece 42 and the bus piece 30.

[0107] Please refer to Figure 10 In some embodiments, the bus piece 30 includes a first sub-bus piece 301 and a second sub-bus piece 302, and the second sub-bus piece 302 is located on both sides of the first sub-bus piece 301 along the first direction.

[0108] The first sub-bus piece 301 is provided with two first electrode interfaces, and the two first electrode interfaces are respectively connected with two electrode terminals of two adjacent battery monomers 20 with opposite polarities. The second sub-bus piece 302 is provided with a second electrode interface, and the second electrode interface is connected with one electrode terminal of one battery monomer 20.

[0109] The battery cell 20 can be a soft pack battery, two electrode terminals are arranged on one soft pack battery, which are a positive electrode terminal and a negative electrode terminal respectively. If one of the two first electrode interfaces of the first sub bus bar 301 located in the middle is electrically connected with the positive electrode terminal of one battery cell 20, the other first electrode interface is electrically connected with the negative electrode terminal of the adjacent battery cell 20. If one of the two first electrode interfaces of the first sub bus bar 301 located in the middle is electrically connected with the negative electrode terminal of one battery cell 20, the other first electrode interface is electrically connected with the positive electrode terminal of the adjacent battery cell 20. The positive electrode terminal and the negative electrode terminal of each battery cell 20 are connected with two adjacent bus bars 30 respectively. The second sub bus bar 302 located on both sides can be provided with one second electrode interface for connecting with one tab of the battery cell 20, and can also be provided with an electrical connection position for connecting with other components such as the electrode terminal base. Of course, it should be pointed out that the first sub bus bar 301 located on both sides of the first sub bus bar 301 can also be the first sub bus bar 301, that is, it has two first electrode interfaces, which is determined according to the arrangement of the battery cell 20. In addition, the number of bus bars 30 is the same as the number of conductive pieces 42 and is arranged one by one, that is, the sum of the number of first sub bus bars 301 and second sub bus bars 302 is the same as the number of conductive pieces 42.

[0110] By arranging the bus bar 30 to include the first sub bus bar 301 and the second sub bus bar 302, the signal connection with the positive electrode terminal and the negative electrode terminal of the battery cell 20 can be realized.

[0111] Please refer to Figure 10 In some embodiments, the number of bus bars 30 is multiple;

[0112] The plurality of bus bars 30 are arranged on both sides of the plate body 41 along the second direction, and the second direction is perpendicular to the first direction. The number of bus bars 30 is the same as the number of conductive pieces 42 and is arranged one by one.

[0113] Specifically, the bus bars 30 can be divided into two rows, and the two rows of bus bars 30 are arranged in parallel on both sides of the plate body 41 along the second direction. Each row of bus bars 30 is arranged in the first direction, and the conductive piece 42 is also arranged in the first direction of the plate body 41. The number of conductive pieces 42 is the same as the number of bus bars 30 and is arranged one by one.

[0114] By arranging the plurality of bus bars 30 on both sides of the plate body 41, the bus bar 30 and the battery cell 20 can be connected from both sides of the plate body 41, which saves the number of plate bodies 41 and saves space.

[0115] In some embodiments, the bus bar 30 is a copper adapter sheet or an aluminum adapter sheet, and the conductive piece 42 is a nickel sheet.

[0116] The busbar 30 can be a busbar sheet, which is generally made of metal, such as a copper sheet or an aluminum sheet. The copper or aluminum has good conductivity and relatively low manufacturing cost. The conductive piece 42 is generally made of a nickel sheet. The sheet shape can reduce the volume occupied.

[0117] The busbar 30 is made of an aluminum sheet or a copper sheet, which has low cost and good performance.

[0118] According to some embodiments of the present application, the present application provides a kind of power utilization equipment, multiple battery monomer 20, confluence piece 30 and circuit board 40, multiple battery monomer 20 is arranged along the first direction;Confluence piece 30 is at least electrically connected with one electrode terminal of one battery monomer 20;Circuit board 40 includes board body 41 and the electrically connected conductive part 42 of board body 41, board body 41 is arranged along the first direction;Confluence piece 30 is provided with clamping part 303 on the side away from battery monomer 20, and conductive part 42 includes clamping section 421 and extension section 422, extension section 422 connects clamping section 421 and board body 41, clamping section 421 is provided with clamping position, recess 31 is provided with the second gap 311 for the extension section 422 to pass through on the side towards board body 41.Camping part 303 includes recess 31, and first protruding end 32 and second protruding end 33 are arranged in recess 31;The opening 317 of recess 31 is arranged towards conductive part 42, first protruding end 32 is arranged in recess 31 from groove side wall 316 of recess 31, and second protruding end 33 is arranged towards opening 317 from groove bottom wall 315 of recess 31;Clamping position includes first gap 4211 and through hole 4212, first gap 4211 extends to the outer edge of conductive part 42, first gap 4211 is arranged corresponding to the position of first protruding end 32, and through hole 4212 is arranged corresponding to the position of second protruding end 33.Second protruding end 33 includes connecting part 331 and abutting part 332, connecting part 331 connects groove bottom wall 315 of recess 31 and abutting part 332;Connecting part 331, abutting part 332 and groove bottom wall 315 are arranged as sliding gap 34 for the direction of conductive part 42 sliding towards the side away from second gap 311, and abutting part 332 is used for abutting with conductive part 42 to block conductive part 42 from sliding off the opening 317 of recess 31.Specifically, the number of first protruding end 32 is two, and the two first protruding ends 32 are arranged on the two wall surfaces of groove side wall 316 arranged opposite along the first direction;The number of first gap 4211 is two, and the two first gaps 4211 are arranged on the two sides of conductive part 42 along the first direction, and the two first gaps 4211 are arranged one by one corresponding to the two first protruding ends 32, first gap 4211 is arranged spaced apart from through hole 4212, and conductive part 42 is electrically connected with confluence piece 30.Recess 31 is provided with adhesive layer 50, and adhesive layer 50 bonds confluence piece 30 and conductive part 42.The present application adopts the clamping mode to realize detachable connection, which can reduce maintenance cost, and adopts mortise and tenon mechanical mechanism for positioning and fixing, and adopts adhesive layer 50 for further strengthening, which improves positioning accuracy and installation reliability.

[0119] According to some embodiments of the present application, the present application provides a power consuming device, which comprises a device body and the battery device 100 described above, and the battery device 100 is arranged in the device body. The power consuming device can be a vehicle 1000. Since the power consuming device comprises any technical solution of all the embodiments described above, it has at least all the beneficial effects brought by any technical solution described above, which will not be repeated here.

[0120] The above is only optional embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields under the application concept of the present application is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized by, The application relates to a battery pack, comprising: a plurality of battery cells arranged along a first direction; a busbar electrically connected to one electrode terminal of at least one of the battery cells; a circuit board comprising a board body and a conductive member electrically connected to the board body, the board body being arranged along the first direction; a clamping portion provided on a side of the busbar away from the battery cells, and a clamping site provided on the conductive member, the busbar and the conductive member being clamped by the clamping portion and the clamping site, and the conductive member being electrically connected to the busbar.

2. The battery device according to claim 1, characterized by The clamping portion comprises a groove, and a first protruding end and a second protruding end provided in the groove; an opening of the groove is arranged towards the conductive member, the first protruding end is arranged extending into the groove from a groove side wall of the groove, and the second protruding end is arranged extending into the groove from a groove bottom wall towards the opening; the clamping site comprises a first notch and a through hole, the first notch extends to an outer edge of the conductive member, the first notch is arranged corresponding to a position of the first protruding end, and the through hole is arranged corresponding to a position of the second protruding end, under the condition that the busbar and the conductive member are clamped, the first protruding end is clamped in the first notch, and the second protruding end is clamped in the through hole.

3. The battery device of claim 2, wherein The number of the first protruding ends is two, and the two first protruding ends are arranged on two wall surfaces of the groove side wall arranged oppositely along the first direction, respectively; the number of the first notches is two, and the two first notches are arranged on two sides of the conductive member along the first direction, respectively, and the two first notches are arranged corresponding to the two first protruding ends, respectively, and the first notches are arranged spaced apart from the through hole.

4. The battery device of claim 2, wherein The conductive member comprises a clamping segment and an extending segment, the extending segment connects the clamping segment and the board body, the clamping segment is provided with the clamping site, and a side of the groove away from the board body is provided with a second notch for the extending segment to pass through.

5. The battery device of claim 4, wherein The two first protruding ends divide the groove into a first sub-groove, a second sub-groove and a third sub-groove, the second sub-groove is communicated between the first sub-groove and the third sub-groove, a bottom surface of the third sub-groove is provided with the second protruding end, and the third sub-groove is arranged close to the second notch; the clamping segment comprises a first sub-segment, a second sub-segment and a third sub-segment connected in sequence, the third sub-segment is connected with the extending segment, the through hole is arranged in the third sub-segment, the first sub-segment is arranged in the first sub-groove, the second sub-segment is arranged in the second sub-groove, and the third sub-segment is arranged in the third sub-groove.

6. The battery device of claim 5, wherein An end of the first sub-segment is provided with a chamfer.

7. The battery device of claim 4, wherein The second protruding end comprises a connecting portion and an abutting portion, the connecting portion connects the groove bottom wall and the abutting portion, and the abutting portion is arranged spaced apart from the groove bottom wall; the connecting portion, the abutting portion and the groove bottom wall are arranged as a sliding gap for the conductive member to slide in from a side away from the second notch, and the abutting portion is used for abutting against the conductive member to block the conductive member from sliding off the opening of the groove.

8. The battery device of claim 4, wherein, a first interval is arranged between the first protruding end and the groove bottom wall; and / or, The clamping part further comprises a third protruding end, which is arranged on one side of the slot side wall away from the second gap, and a second interval is arranged between the third protruding end and the slot bottom wall.

9. The battery device according to any one of claims 1 to 8, characterized by, The battery device further comprises a glue layer, and the busbar and the conductive piece are bonded by the glue layer.

10. The battery device according to any one of claims 1 to 8, characterized by, The busbar comprises a first busbar sub-piece and a second busbar sub-piece, and the second busbar sub-piece is located on both sides of the first busbar sub-piece along a first direction. The first busbar sub-piece is provided with two first electrode interfaces, and the two first electrode interfaces are respectively connected with two electrode terminals of two adjacent battery monomers with opposite polarities; the second busbar sub-piece is provided with one second electrode interface, and the second electrode interface is connected with one electrode terminal of one battery monomer.

11. The battery device according to any one of claims 1 to 8, characterized by, The number of the busbar is multiple. Multiple busbars are respectively arranged on both sides of the plate body along a second direction, and the second direction is perpendicular to the first direction; the number of the busbars is the same as and one-to-one corresponds to the number of the conductive pieces.

12. The battery device according to any one of claims 1 to 8, characterized by, The busbar is a copper adapter sheet or an aluminum adapter sheet, and the conductive piece is a nickel sheet.

13. An electrical device, characterized by The electric equipment comprises an equipment body and the battery device as claimed in any one of claims 1 to 12, and the battery device is arranged on the equipment body.

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