Space ring, battery device and electric equipment

Abstract

The utility model discloses a space ring, a battery device and electric equipment, the space ring comprises a first surface, and the first surface is suitable for facing a battery cell; the space ring is further provided with a containing cavity and a containing channel, the containing channel penetrates through the bottom wall of the containing cavity and the first face, the containing channel comprises a first section, the first section is communicated with the containing cavity and extends in the first direction, and the included angle between the first direction and the first face is an acute angle. A space ring comprises a first surface facing a battery cell, an accommodating channel of the space ring penetrates through a bottom wall of an accommodating cavity and the first surface, a first section of the accommodating channel is communicated with the accommodating cavity and extends along a first direction, an included angle between the first direction and the first surface is an acute angle, and when a tab extends into the accommodating cavity from the first section, the first section provides a certain inclination angle; the bending degree of the tabs can be reduced, and the fracture risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a spacer, a battery device and electrical equipment. Background Art

[0002] As an important component of the battery device, the spacer can improve the bending shape of the tab, isolate the tab from the aluminum shell, and prevent contact from causing poor shell pressure or even short circuit.

[0003] The existing spacer is a symmetrical structure, the contact surface between the tab and the spacer is perpendicular to the large surface of the cover plate, and the tab is vertically inserted into the gap in the spacer. During assembly, the tab needs to be connected to the lead-out piece of the cover plate, so the tab needs to have a certain length. After the cover plate is welded to the shell of the battery device, the tab overlaps and bends, and the tab near the spacer is bent nearly 180 degrees, which poses a risk of breakage. Utility Model Content

[0004] The utility model aims to provide a spacer, a battery device and an electrical device, which solve the problem that the bending angle of the tab close to the spacer is large and there is a risk of breakage.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In the first aspect, the utility model provides a spacer, including a first surface, which is suitable for facing the battery core; the spacer is also provided with a receiving cavity and a receiving channel, the receiving channel runs through the bottom wall of the receiving cavity and the first surface, the receiving channel includes a first section, the first section is connected to the receiving cavity, the first section extends along a first direction, and the angle between the first direction and the first surface is an acute angle.

[0007] In one embodiment, the extension path of the receiving channel is any one or a combination of a straight line, a broken line and a curve.

[0008] In one embodiment, the spacer includes a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are connected, the first mounting portion includes a first mounting surface, the second mounting portion includes a second mounting surface, the first mounting surface is arranged opposite to the second mounting surface, and the accommodating channel is formed between the first mounting surface and the second mounting surface.

[0009] In one embodiment, the first section is connected to the first surface, and the first mounting surface and the second mounting surface are both planes, the first mounting surface and the first surface have a first angle α, satisfying: 20°≤α≤70°, the second mounting surface and the first surface have a second angle β, satisfying: 20°≤β≤70°, and 0°≤|α-β|≤20°.

[0010] In one implementation, the first mounting surface is parallel to the second mounting surface.

[0011] In one embodiment, the receiving channel further includes a second section, the second section communicates with the first section and the first surface, and the second section is smoothly connected to the first section.

[0012] In one embodiment, among the multiple cross sections of the spacer, the shapes of the cross sections having the receiving channel are the same.

[0013] In one embodiment, the receiving channel is suitable for receiving the tab, and the width of the receiving channel is greater than the width of the tab.

[0014] In a second aspect, the utility model further provides a battery device, comprising a battery cell, a tab and a spacer as described in any one of the various embodiments of the first aspect, wherein the tab is connected to the end of the battery cell and the tab is inserted into the receiving channel.

[0015] In a third aspect, the utility model further provides an electrical equipment, comprising an electrical device and a battery device as described in the second aspect, wherein the battery device supplies power to the electrical device.

[0016] By setting the spacer to include a first surface facing the battery cell, the receiving channel of the spacer passes through the bottom wall and the first surface of the receiving cavity, the first section of the receiving channel is connected to the receiving cavity and extends along the first direction, the angle between the first direction and the first surface is an acute angle, and when the pole ear extends from the first section into the receiving cavity, the first section provides a certain inclination angle, which can reduce the bending degree of the pole ear and reduce the risk of breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a side cross-sectional schematic diagram of a spacer ring of an embodiment;

[0019] Figure 2 is a side cross-sectional schematic diagram of a spacer ring of another embodiment;

[0020] Figure 3 is a side cross-sectional schematic diagram of a spacer ring of another embodiment;

[0021] Figure 4 1 is a schematic top view of a spacer ring of an embodiment.

[0022] Description of reference numerals:

[0023] 100-spacer;

[0024] 10-first surface, 20-accommodating cavity, 21-second surface, 30-accommodating channel, 31-first section, 32-second section, 33-third section, 40-first mounting portion, 41-first mounting surface, 50-second mounting portion, 51-second mounting surface, 60-first plate body, 61-first portion, 62-second portion, 63-first connecting portion, 70-second plate body, 71-third portion, 72-fourth portion, 73-second connecting portion;

[0025] α-first angle, β-second angle;

[0026] 200-ear;

[0027] 300-Lead-out piece. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0031] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0032] The utility model provides an electric device, comprising an electric device and a battery device in an embodiment of the utility model, wherein the battery device supplies power to the electric device.

[0033] Optionally, the electrical device may be an electric vehicle, a hybrid vehicle, a base station, a household electrical load, etc.

[0034] Optionally, the battery device may be a power battery device, an energy storage battery device, etc., without specific limitation.

[0035] The electrical equipment adopts the battery device in the embodiment of the utility model, which can reduce the risk of low capacity of the battery.

[0036] The embodiment of the utility model further provides a battery device, comprising a battery cell, a tab and a spacer in the embodiment of the utility model, wherein the tab is arranged at at least one end of the battery cell, and the tab passes through the spacer.

[0037] Optionally, the battery cell can be a square laminated battery cell, a wound battery cell, etc., without limitation.

[0038] Optionally, the electrode tabs include a positive electrode tab and a negative electrode tab. The positive electrode tab and the negative electrode tab can be arranged at one end of the battery cell in the length direction, or can be respectively arranged at two opposite or adjacent ends of the battery cell, without specific limitation.

[0039] Optionally, the connection method between the tab and the battery cell can be welding, bonding, clamping, screwing, etc., without specific limitation.

[0040] Optionally, the battery device further comprises a shell, the shell comprising a bottom plate and a plurality of side plates, the side plates are connected to the bottom plate and enclosed to form a receiving cavity. The receiving cavity is open at one end opposite to the bottom plate, and the battery cell is received in the receiving cavity.

[0041] Optionally, the shell is a material with high structural strength, specifically metal materials, high-strength plastics, ceramics, etc., and metal materials such as aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc. The shell can be an integrated structure, that is, the bottom plate and the side plates are an integrated structure made by an integrated molding process, and the integrated molding process can be specifically stamping, casting, etc., without limitation. The shell can also be a split structure, and the side plates and the bottom plate can be connected and fixed by welding, bonding, clamping, screwing, etc. The wall thickness of the shell can be roughly uniform everywhere, that is, the thickness of the side plates can be roughly uniform, and the thickness of the bottom plate and the side plates can also be roughly the same.

[0042] Optionally, the battery device further comprises a cover plate, which is connected to the opening of the shell to close the accommodating cavity. The connection between the cover plate and the shell can be welding, bonding, clamping, screwing, etc., without limitation. The shape of the cover plate can be substantially the same as that of the bottom plate.

[0043] The battery device in the embodiment of the utility model can reduce the risk of the tab breaking and thus reduce the risk of low capacity of the battery by adopting the spacer in the embodiment of the utility model.

[0044] The spacer ring in the embodiment of the utility model is described in detail below.

[0045] Define the direction first. Please refer to Figure 1 , X is the length direction of the spacer, Y is the width direction of the spacer, and Z is the height direction of the spacer.

[0046] Please refer to Figure 1 The embodiment of the utility model provides a spacer 100, and the spacer 100 includes a first surface 10, and the first surface 10 is suitable for facing the battery cell of the battery device.

[0047] Optionally, the material of the spacer 100 can be polypropylene (PP), polyethylene (PE), butyl rubber, fluororubber, etc., without specific limitation.

[0048] Optionally, the spacer 100 is sleeved on at least one end of the battery cell along the height direction Z.

[0049] Optionally, the positive pole tab and the negative pole tab of the battery device are respectively connected to the two opposite ends of the battery cell in the height direction Z. There are two spacers 100, which are respectively connected to the two opposite ends of the battery cell in the height direction Z. The positive pole tab is passed through the spacer 100 at one end, and the negative pole tab is passed through the spacer 100 at the other end.

[0050] Optionally, the spacer 100 is further provided with a receiving cavity 20 and a receiving channel 30, wherein the receiving channel 30 connects the receiving cavity 20 with the outside, and the receiving channel 30 includes a first section 31, which is connected with the receiving cavity 20 and extends along a first direction, and an angle between the first direction and the first surface 10 is an acute angle.

[0051] Optionally, the cross-sectional shape of the receiving cavity 20 in the vertical height direction Z can be square, rectangular, circular, etc., without specific limitation.

[0052] Optionally, the bottom wall of the receiving cavity 20 is a side of the receiving cavity 20 close to the first surface 10 in the height direction Z, which is the second surface 21. The receiving channel 30 passes through the second surface 21 and the first surface 10 to connect the receiving cavity 20 with the outside.

[0053] Optionally, the first surface 10 is a plane, and the first surface 10 is arranged perpendicular to the height direction Z to facilitate the assembly of the spacer 100 and the battery cell.

[0054] Optionally, the extension path of the first section 31 can be any one of a straight line, a folded line and a curve. When the first section 31 extends along a straight line, the first direction is the extension direction of the straight line; when the first section 31 extends along a folded line or a curve, the first direction can be considered as the direction of the line connecting the center points of the openings at both ends of the first section 31.

[0055] Optionally, the first direction is located in a plane perpendicular to the length direction X of the spacer 100 , and the first direction intersects both the width direction Y and the height direction Z of the spacer 100 .

[0056] Optionally, the angle between the first direction and the first surface 10 may be 30°, 50°, 60°, 70°, etc., without specific limitation.

[0057] Optionally, the second surface 21 is parallel to the first surface 10 , and an angle between the first direction and the second surface 21 is the same as an angle between the first direction and the first surface 10 .

[0058] Optional, such as Figure 1 As shown, the battery device further includes a lead-out sheet 300, the cover plate and the shell of the battery device are butted in the height direction Z, and the lead-out sheet 300 is accommodated in the accommodating cavity of the battery device. One end of the lead-out sheet 300 is suitable for connecting with the tab 200, and the connection method can be welding, bonding, etc., and the other end of the lead-out sheet 300 is connected with the cover plate, and the connection method can be welding, bonding, clamping, screwing, etc., which is not specifically limited.

[0059] With the continuous development of the new energy field, the requirements for the use of energy storage batteries, power batteries, etc. are becoming higher and higher. The battery device includes a battery cell and a tab 200 located at at least one end of the battery cell, but the tab 200 is thin and easy to deform. The current solution is to set a spacer 100 on the tab 200 to fix the tab 200. As an important component of the battery device, the spacer 100 can improve the bending deformation of the tab 200, isolate the tab 200 from the outer shell of the battery device, and prevent the two from contacting each other, resulting in poor shell pressure, or even short circuit.

[0060] The existing spacer 100 is a symmetrical structure, the contact surface of the tab 200 and the spacer 100 is perpendicular to the cover plate (that is, the tab 200 extends into the receiving cavity 20 along the height direction Z), and the tab 200 is vertically inserted into the receiving channel 30 of the spacer 100. During assembly, the tab 200 needs to be connected to the lead-out piece 300 of the cover plate, so the tab 200 needs to have a certain length. After the cover plate is welded to the shell of the battery device, the tab 200 needs to be overlapped and bent to be accommodated in the receiving cavity 20. At this time, the bending angle of the tab 200 near the spacer 100 is nearly 180°, which poses a risk of breakage.

[0061] The spacer 100 in the embodiment of the utility model is provided with a first surface 10 facing the battery cell, a receiving channel 30 of the spacer 100 connects the receiving cavity 20 and the first surface 10, the receiving channel 30 includes a first section 31, the first section 31 is connected to the receiving cavity 20, the first section 31 extends along a first direction, and the angle between the first direction and the first surface 10 is an acute angle. When the pole ear 200 extends from the first section 31 into the receiving cavity 20, the first section 31 provides a certain inclination angle, which can reduce the bending degree of the pole ear 200 and reduce the risk of breakage.

[0062] Optionally, the extension path of the receiving channel 30 is any one or a combination of a straight line, a broken line and a curve.

[0063] Optionally, the receiving channel 30 may include a second section 32, a third section 33, a fourth section, etc. in addition to the first section 31, and there is no specific limitation. The first section 31, the second section 32, the third section 33, the fourth section, etc. are sequentially connected to form the receiving channel 30, and the extension path of each section may be any one of a straight line, a broken line, and a curve, and the receiving channel 30 is any one or a combination of a straight line, a broken line, and a curve.

[0064] For example, in one embodiment, please refer to Figure 1 The receiving channel 30 only includes a first section 31 , and the first section 31 extends in a straight line and passes through the first surface 10 and the second surface 21 .

[0065] In another embodiment, please refer to Figure 2 The receiving channel 30 includes a first section 31 and a second section 32 . The first section 31 and the second section 32 both extend along a curve. The second section 32 is connected to the first section 31 and passes through the first surface 10 .

[0066] In another embodiment, please refer to Figure 3 The receiving channel 30 includes a first section 31, a second section 32 and a third section 33 connected in sequence, the third section 33 is connected to the first surface 10, the second section 32 connects an end of the first section 31 away from the receiving cavity 20 and an end of the third section 33 away from the first surface 10, wherein the first section 31 and the third section 33 both extend along a straight line, and the second section 32 extends along a curve.

[0067] By setting the extension path of the receiving channel 30 to be any one or a combination of a straight line, a broken line and a curve, it can meet the folding requirements of the tabs 200 of different lengths and expand the application range.

[0068] Optional, such as Figure 1 and Figure 4 As shown, the spacer 100 includes a first mounting portion 40 and a second mounting portion 50 , and the first mounting portion 40 and the second mounting portion 50 are butted against each other.

[0069] Optionally, the first mounting portion 40 and the second mounting portion 50 are butted against each other in the width direction Y of the spacer.

[0070] Optionally, the spacer 100 may be an integrated structure, that is, the first mounting portion 40 and the second mounting portion 50 are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, injection molding, etc., without limitation. The spacer 100 may also be a split structure, and the first mounting portion 40 and the second mounting portion 50 are connected by welding, bonding, clamping, screwing, etc., without limitation.

[0071] Optional, such as Figure 1 and Figure 4 As shown, the first mounting portion 40 includes a first mounting surface 41 , and the second mounting portion 50 includes a second mounting surface 51 . The first mounting surface 41 and the second mounting surface 51 are arranged opposite to each other, and a receiving channel 30 is formed between the first mounting surface 41 and the second mounting surface 51 .

[0072] Optionally, the first mounting surface 41 and the second mounting surface 51 may be a plane, a curved surface, a folded surface, etc., without specific limitation.

[0073] Optionally, at any position along the length direction X of the spacer 100 , the distance from the first mounting surface 41 to the second mounting surface 51 may be the same or different, and there is no specific limitation thereto.

[0074] By setting the spacer 100 including the first mounting part 40 and the second mounting part 50, the first mounting part 40 includes the first mounting surface 41, the second mounting part 50 includes the second mounting surface 51, the first mounting surface 41 and the second mounting surface 51 are arranged opposite to each other, a part of the pole ear 200 of the battery device can be inserted into the receiving channel 30 between the first mounting surface 41 and the second mounting surface 51, and the remaining part of the pole ear 200 except the part connected with the lead-out plate 300 is received in the receiving cavity 20, and the electrical connection between the battery cell and the outside is realized through the pole ear 200, and the spacer 100 can limit and protect the pole ear 200 to avoid the short circuit between the pole ear 200 and the outer shell of the battery device, which can improve the stability of the battery.

[0075] Optional, such as Figure 1 As shown, the first section 31 connects the first surface 10 and the second surface 21. The first mounting surface 41 and the second mounting surface 51 are both planes. The first mounting surface 41 and the first surface 10 have a first angle α, which satisfies: 20°≤α≤70°, and the second mounting surface 51 and the first surface 10 have a second angle β, which satisfies: 20°≤β≤70°, and 0°≤|α-β|≤20°.

[0076] Optionally, a value range of the first angle α satisfies: 30°≤α≤60°; a value range of the second angle β satisfies: 30°≤α≤60°.

[0077] Optionally, the value of the first angle α can be specifically 30°, 30°, 50°, 60°, etc., and similarly, the value of the second angle β can be specifically 30°, 50°, 60°, etc., without specific limitation.

[0078] Optionally, the value of the first angle α may be smaller than the value of the second angle β; or, the value of the first angle α may be equal to the value of the second angle β; or, the value of the first angle α may be greater than the value of the second angle β, without specific limitation.

[0079] Optionally, the value of the first angle α and the value of the second angle β also satisfy: 0°≤|α-β|≤10°, so as to avoid a large difference between the value of the first angle α and the value of the second angle β, which would cause the first mounting portion 40 and the second mounting portion 50 to interfere with each other and prevent the tab 200 from passing through.

[0080] Optionally, the difference between the value of the first angle α and the value of the second angle β may be 0°, 3°, 5°, 6°, etc., without specific limitation.

[0081] By setting the first mounting surface 41 to have a first angle α with the first direction, satisfying: 20°≤α≤70°, and the second mounting surface 51 to have a second angle β with the first direction, satisfying: 20°≤β≤70°, and 0°≤|α-β|≤10°, when the tab 200 extends from the receiving channel 30 into the receiving cavity 20, the width of the receiving channel 30 is not too narrow to hinder the passage of the tab 200, and the first section 31 provides a certain inclination angle, which can reduce the bending degree of the tab 200 and reduce the risk of breakage.

[0082] Optionally, the first mounting surface 41 is parallel to the second mounting surface 51. The first mounting surface 41 and the second mounting surface 51 may be planes or curved surfaces, etc., without limitation. For example, the first mounting surface 41 and the second mounting surface 51 are planes, and the value of the first angle α is equal to the value of the second angle β.

[0083] By arranging the first mounting surface 41 and the second mounting surface 51 to be parallel, the processing of the spacer 100 and the assembly of the spacer 100 and the tab 200 are facilitated.

[0084] Optionally, the receiving channel 30 further includes a second section 32 , the second section 32 communicates with the first section 31 and the first surface 10 , and the second section 32 is smoothly connected to the first section 31 .

[0085] Optionally, the second section 32 may extend along the first direction, or may extend along a direction having an angle with the first direction, and there is no specific limitation thereto.

[0086] Optional, such as Figure 2As shown, the second section 32 connects the first section 31 and the first surface 10 , and an extending direction of the second section 32 forms an angle with a first extending direction of the first section 31 .

[0087] By configuring the receiving channel 30 to further include the second section 32 , the second section 32 is connected to the first section 31 and the first surface 10 , and the second section 32 is smoothly connected to the first section 31 , the bending degree of the tab 200 can be reduced, thereby reducing the risk of breakage.

[0088] Optionally, among the multiple cross sections of the spacer 100 , the shapes of the cross sections having the receiving channel 30 are the same.

[0089] Optionally, the cross section refers to a cross section of the spacer 100 along the length direction X.

[0090] For example, Figure 1 As shown, the receiving channel 30 extends in a straight line, the inner wall surface of the receiving channel 30 is a plane, and the distance between the two opposite side walls remains unchanged in the width direction Y. In any cross section of the receiving channel 30 along the length direction X, the shape of the spacer 100 is the same.

[0091] By making the shapes of the cross sections of the receiving channels 30 in the multiple cross sections of the spacer 100 the same, the processing of the spacer 100 and the assembly of the spacer 100 and the tab 200 are facilitated.

[0092] Optionally, the width of the receiving channel 30 is greater than the width of the pole lug 200 . The width of the receiving channel 30 , i.e., the distance from the first mounting surface 41 to the second mounting surface 51 , is greater than the dimension of the pole lug 200 in the width direction Y to facilitate the assembly of the spacer 100 and the pole lug 200 .

[0093] Optional, such as Figure 4 As shown, the spacer 100 also includes a first plate body 60 and a second plate body 70. The first plate body 60 is connected to the side of the first mounting portion 40 away from the first surface 10, and the second plate body 70 is connected to the side of the second mounting portion 50 away from the first surface 10. The first plate body 60 and the second plate body 70 enclose a receiving cavity 20.

[0094] Optionally, the first plate body 60 and the first mounting portion 40 may be an integral structure or a split structure, and the first plate body 60 and the first mounting portion 40 are connected by bonding, snapping, screwing, etc., without specific limitation.

[0095] Optional, such as Figure 4As shown, the first plate body 60 includes a first portion 61, a second portion 62 and a first connecting portion 63, the first portion 61 and the second portion 62 are arranged opposite to each other in the length direction X of the spacer 100, and are respectively connected to two opposite ends of the first connecting portion 63 in the length direction X. Similarly, the second plate body 70 includes a third portion 71, a fourth portion 72 and a second connecting portion 73, the third portion 71 and the fourth portion 72 are arranged opposite to each other in the length direction X, and are respectively connected to two opposite ends of the second connecting portion 73 in the length direction X.

[0096] Optionally, the first plate body 60 may be an integrated structure, that is, the first plate body 60 is an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, injection molding, etc., without limitation. The first plate body 60 may also be a split structure, and the first portion 61, the second portion 62, and the first connecting portion 63 may be connected by bonding, clamping, screwing, etc., without limitation.

[0097] Similarly, the structure of the second plate body 70 and the connection method between the second plate body 70 and the second mounting portion 50 are similar to the structure of the first plate body 60 and the connection method between the first plate body 60 and the first mounting portion 40 described above, and can be referred to without further description.

[0098] Optionally, the first plate body 60 and the second plate body 70 are arranged opposite to each other in the width direction Y and enclose a receiving cavity 20. At this time, the first connecting part 63 and the second connecting part 73 are opposite to each other in the width direction Y, the first part 61 is connected to the third part 71, and the second part 62 is connected to the fourth part 72.

[0099] By setting the spacer 100, it also includes a first plate body 60 and a second plate body 70. The first plate body 60 is connected to the side of the first mounting portion 40 away from the first surface 10, and the second plate body 70 is connected to the side of the second mounting portion 50 away from the first surface 10. The first plate body 60 and the second plate body 70 enclose a receiving cavity 20, and at least a part of the pole ear 200 is received in the receiving cavity 20. The spacer 100 can reduce the movement and bumping of the pole ear 200, protect the pole ear 200, and improve the stability of the battery.

[0100] The following describes an assembly process of the spacer 100 in an embodiment of the present invention.

[0101] Optionally, the spacer 100 includes a first spacer and a second spacer, the first spacer includes a first plate 60 and a first mounting portion 40, and the second spacer includes a second plate 70 and a second mounting portion 50. The first spacer and the second spacer are butted in the width direction Y of the spacer 100, and the tab 200 is suitable for passing through the receiving channel 30 formed between the first spacer and the second spacer.

[0102] When assembling the battery device, first pre-weld the tab 200 with the battery cell, and then weld the tab 200 with the lead-out tab 300 of the cover plate. Then install and dock the first spacer and the second spacer, press the cover plate down toward the battery cell, and weld and fix it with the outer shell of the battery device to complete the assembly of the battery device.

[0103] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0104] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A spacer, characterized in that: It includes a first surface, which is suitable for facing the battery cell; the spacer is also provided with a receiving cavity and a receiving channel, which passes through the bottom wall of the receiving cavity and the first surface, and the receiving channel includes a first section, which is connected to the receiving cavity, and the first section extends along a first direction, and the angle between the first direction and the first surface is an acute angle.

2. The spacer according to claim 1, characterized in that: The extension path of the receiving channel is any one or a combination of a straight line, a broken line and a curve.

3. The spacer according to claim 1, characterized in that: The spacer includes a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are butted against each other, the first mounting portion includes a first mounting surface, the second mounting portion includes a second mounting surface, the first mounting surface is arranged opposite to the second mounting surface, and the accommodating channel is formed between the first mounting surface and the second mounting surface.

4. The spacer according to claim 3, characterized in that: The first section is connected to the first surface, and the first mounting surface and the second mounting surface are both planes. The first mounting surface and the first surface have a first angle α that satisfies: 20°≤α≤70°, and the second mounting surface and the first surface have a second angle β that satisfies: 20°≤β≤70°, and 0°≤|α-β|≤20°.

5. The spacer according to claim 3, characterized in that: The first mounting surface is parallel to the second mounting surface.

6. The spacer according to claim 1, characterized in that: The receiving channel further includes a second section, the second section communicates with the first section and the first surface, and the second section is smoothly connected to the first section.

7. The spacer according to claim 1, characterized in that: Among the multiple cross sections of the spacer, the shapes of the cross sections having the receiving channel are the same.

8. The spacer according to any one of claims 1 to 7, characterized in that: The receiving channel is suitable for receiving the tab, and the width of the receiving channel is greater than the width of the tab.

9. A battery device, characterized in that: It comprises a battery cell, a pole ear and a spacer as claimed in any one of claims 1 to 8, wherein the pole ear is connected to the end of the battery cell and the pole ear is penetrated through the receiving channel.

10. An electrical device, characterized in that: It comprises an electric device and the battery device as claimed in claim 9, wherein the battery device supplies power to the electric device.

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