CN220914513U - Battery connecting assembly, battery and electric equipment - Google Patents

Abstract

The utility model discloses a battery connecting component, a battery and electric equipment, wherein the battery connecting component comprises: the pole lug is provided with a first riveting part; the protection board is provided with a second riveting part, and the first riveting part is in riveting fit with the second riveting part. Through the riveting cooperation of the first riveting portion on the tab and the second riveting portion on the protection board, the tab and the protection board can be directly fixed together, a metal sheet is not required to be arranged on the protection board, parts can be reduced, cost is reduced, the metal sheet is not required to be fixed in a reflow soldering mode, the safety problem caused by high energy in welding is avoided, in addition, the connection speed between the tab and the protection board can be improved in a simpler and more convenient manner through the riveting mode, and therefore the production efficiency of a connecting assembly can be improved.

Description

Battery connecting assembly, battery and electric equipment

Technical Field

The utility model relates to the technical field of electric equipment, in particular to a battery connecting assembly, a battery and electric equipment.

Background

In the related art, a metal sheet is usually provided on a protective plate by reflow soldering, and the positive electrode tab and the negative electrode tab are electrically connected to the protective plate by the metal sheet. However, nickel is expensive and needs to be fixed to the protective plate by a reflow process, and various welding stability problems such as low peel force may occur due to improper setting of reflow process parameters.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a battery connecting component which can directly and fixedly and electrically connect the electrode lug and the protective plate together, reduce the cost, avoid the safety problem caused by high energy welding and improve the production efficiency.

The utility model further provides a battery.

The utility model further provides electric equipment.

The connection assembly of the battery according to the present utility model includes: the pole lug is provided with a first riveting part; the protection board is provided with a second riveting part, and the first riveting part is in riveting fit with the second riveting part.

According to the battery connecting assembly, the first riveting part on the tab and the second riveting part on the protection plate are in riveting fit, so that the tab and the protection plate can be directly fixed together, a metal sheet is not required to be arranged on the protection plate, parts can be reduced, cost is reduced, the metal sheet is not required to be fixed in a reflow soldering mode, the safety problem caused by high energy welding is avoided, in addition, the connecting speed between the tab and the protection plate can be improved in a riveting mode, and the production efficiency of the connecting assembly can be improved.

In some examples of the utility model, the first rivet is a rivet protrusion and the second rivet is a rivet groove, the rivet protrusion being in rivet engagement with the rivet groove.

In some examples of the utility model, the rivet protrusion includes: first riveting protruding and second riveting protruding in the thickness direction of utmost point ear, first riveting protruding with second riveting protruding is connected, the riveting groove includes: the first riveting groove is communicated with the second riveting groove, the first riveting groove is located on the outer side of the second riveting groove, the first riveting protrusion is in riveting fit with the first riveting groove, and the second riveting protrusion is in riveting fit with the second riveting groove.

In some examples of the present utility model, the cross-sectional area of the first caulking groove is smaller than the cross-sectional area of the second caulking groove in the thickness direction of the protection plate.

In some examples of the present utility model, in the thickness direction of the tab, the protrusion size of the rivet protrusion is a, the thickness of the protection plate is b, and the relationship between a and b is: a is more than or equal to 0.5mm and b is more than or equal to 0.5 mm.

In some examples of the present utility model, a maximum distance between two points of projection of the riveting protrusion on the protection plate is D, and a value range of D is: d is more than or equal to 0.3mm and less than or equal to 5mm.

In some examples of the utility model, the connection assembly further comprises: the first riveting part is a first riveting hole, the second riveting part is a second riveting hole, and the rivet penetrates through the first riveting hole and the second riveting hole so that the tab and the protection plate are electrically connected through the rivet.

In some examples of the utility model, the rivet includes: the novel electric pole comprises a first rivet head, a rivet column and a second rivet head, wherein the first rivet head and the second rivet head are respectively connected to two ends of the rivet column, the rivet column penetrates through the first riveting hole and the second riveting hole, the first rivet head is clamped on the pole lug, and the second rivet head is clamped on the protection plate.

In some examples of the present utility model, a conductive layer is disposed on the protective plate, the conductive layer being electrically connected to the second rivet.

The battery according to the present utility model includes: the connection assembly of the battery described above.

The electric equipment according to the utility model comprises: the battery described above.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a cross-sectional view of a connection assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a first angle structure of a tab;

FIG. 3 is a second angular schematic view of a tab;

Fig. 4 is a sectional view of the protection plate;

Fig. 5 is a cross-sectional view of another structure of a connection assembly according to an embodiment of the present utility model.

Reference numerals:

1. A connection assembly;

10. A tab; 11. a first caulking portion; 111. a first riveting protrusion; 112. a second rivet protrusion; 113. a first rivet hole; 20. a protective plate; 21. a second caulking portion; 211. a first rivet groove; 212. a second rivet groove; 213. a second rivet hole; 30. a rivet; 31. a first rivet head; 32. a rivet post; 33. and a second rivet head.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

A connection assembly 1 of a battery according to an embodiment of the present utility model is described below with reference to fig. 1 to 5. The battery connection assembly 1 mainly plays a role in supplying power, and can supply power for a vehicle, so that the vehicle can work normally.

As shown in fig. 1 and 5, a connection assembly 1 of a battery according to an embodiment of the present utility model includes: a tab 10 and a protection plate 20. The tab 10 mainly plays a role in electrical connection, and the tab 10 can lead out an anode and a cathode in the battery core and electrically connect with corresponding components, so that electrical connection between the connection assembly 1 and the corresponding components can be realized. The protection board 20 mainly plays a role in protection, and the protection board 20 can control current and voltage in the process of charging and discharging the battery, so that the battery is prevented from being overcharged or overdischarged, and the battery is damaged, and safety problems are caused.

As shown in fig. 1 to 4, the tab 10 is provided with a first riveting portion 11, the first riveting portion 11 mainly plays a role in riveting, meanwhile, the protection plate 20 is also provided with a second riveting portion 21, the second riveting portion 21 can play a role in riveting, and the first riveting portion 11 and the second riveting portion 21 are in riveting fit, so that the tab 10 and the protection plate 20 can be fixed together, the connection between the tab 10 and the protection plate 20 is more stable, and the protection plate 20 and the tab 10 can be better matched.

Therefore, the first riveting part 11 on the tab 10 and the second riveting part 21 on the protection plate 20 are in riveting fit, so that the tab 10 and the protection plate 20 can be directly fixed together, a metal sheet is not required to be arranged on the protection plate 20, parts can be reduced, cost is reduced, the metal sheet is not required to be fixed in a reflow soldering mode, the safety problem caused by high energy of welding is avoided, in addition, the connection speed between the tab 10 and the protection plate 20 can be improved in a riveting mode, and therefore the production efficiency of the connecting assembly 1 can be improved.

As shown in fig. 1 to 3, the first caulking portion 11 is a caulking protrusion, and the second caulking portion 21 is a caulking groove, and the caulking protrusion is caulking-fitted to the caulking groove. It should be noted that, the initial structural states of the tab 10 and the protection plate 20 may be planar structures, and the tab 10 and the protection plate 20 have cold deformation capability, and when the tab 10 and the protection plate 20 need to be riveted without nails, pressure may be applied to the tab 10, so that local deformation may be generated between the tab 10 and the protection plate 20, and then the tab 10 and the protection plate 20 may be connected and fixed.

Specifically, when the tab 10 and the protection plate 20 are to be nailed, the tab 10 may be pressed against the protection plate 20 by the rivet joint, and the tab 10 may be deformed by the pressure of the rivet joint to form the first rivet portion 11, i.e., the rivet protrusion, facing the protection plate 20. When the tab 10 is deformed, the tab 10 can transmit the pressure of the rivet joint to the protection plate 20, so that when the tab 10 is deformed, the tab 10 can also extrude the protection plate 20 to deform, a second rivet portion 21, namely a rivet groove, is formed in the protection plate 20, and the rivet protrusion is matched with the rivet groove, so that the tab 10 and the protection plate 20 can be connected and fixed, and the connection between the tab 10 and the protection plate 20 is firmer and more stable.

In addition, as shown in fig. 1, the caulking protrusion includes: a first caulking protrusion 111 and a second caulking protrusion 112, the first caulking protrusion 111 being connected with the second caulking protrusion 112 in a thickness direction of the tab 10, the caulking groove including: the first riveting groove 211 and the second riveting groove 212, the first riveting groove 211 is communicated with the second riveting groove 212, and compared with the second riveting groove 212, the first riveting groove 211 is adjacent to the riveting protrusion, the first riveting protrusion 111 is in riveting fit with the first riveting groove 211, and the second riveting protrusion 112 is in riveting fit with the second riveting groove 212.

Wherein, the first riveting protrusion 111 and the second riveting protrusion 112 can both play a role in riveting, and the first riveting protrusion 111 and the second riveting protrusion 112 are connected in the thickness direction of the tab 10, that is, the first riveting protrusion 111 and the second riveting protrusion 112 are in an integrated structure, so that the first riveting protrusion 111 and the second riveting protrusion 112 can be simultaneously in riveting fit, and the riveting effect of the riveting protrusions is improved. Also, the first and second caulking grooves 211 and 212 may function as caulking, and the first and second caulking grooves 211 and 212 communicate such that the first and second caulking grooves 211 and 212 may be engaged with the first and second caulking protrusions 111 and 112.

The first caulking groove 211 is located outside the second caulking groove 212, the first caulking protrusion 111 is caulking-fitted with the first caulking groove 211, and the second caulking protrusion 112 is caulking-fitted with the second caulking groove 212. That is, in the process of pressing the tab 10 by the rivet joint, the tab 10 is deformed to first form the second rivet protrusion 112, then form the first rivet protrusion 111, and when the tab 10 transmits the pressure to the protection plate 20, the second rivet protrusion 112 presses the protection plate 20 to first form the first rivet groove 211, and then the second rivet protrusion 112 continues to press the protection plate 20 to form the second rivet groove 212. Finally, the first riveting protrusion 111 is in riveting fit with the first riveting groove 211, and the second riveting protrusion 112 is in riveting fit with the second riveting groove 212, so that the connection between the riveting protrusion and the riveting groove is more stable, and the connection between the tab 10 and the protection plate 20 is more firm and stable.

Specifically, as shown in fig. 1 and 4, the cross-sectional area of the first caulking groove 211 is smaller than the cross-sectional area of the second caulking groove 212 in the thickness direction of the protection plate 20. Because the first rivet protrusion 111 is rivet-fitted with the first rivet groove 211, and the second rivet protrusion 112 is rivet-fitted with the second rivet groove 212, in the thickness direction of the protection plate 20, when the cross-sectional area of the first rivet protrusion 111 is smaller than that of the second rivet protrusion 112, after the second rivet protrusion 112 is fitted with the second rivet groove 212, because the first rivet groove 211 is located outside the second rivet groove 212, the first rivet groove 211 can restrict the second rivet protrusion 112 in the second rivet groove 212, so that the second rivet protrusion 112 is more firmly and stably arranged, thereby enabling the connection between the rivet protrusion and the rivet groove to be more stable, and further enabling the connection between the tab 10 and the protection plate 20 to be more stable.

Further, as shown in fig. 1, in the thickness direction of the tab 10, the protruding dimension of the caulking protrusion is a, the thickness of the protection plate 20 is b, and the relationship between a and b is: a is more than or equal to 0.5mm and b is more than or equal to 0.5 mm. That is, in order to make the caulking projections better fit with the protection plate 20, the protruding dimension a of the caulking projections in the thickness direction of the tab 10 needs to be within a proper range, that is, the dimension a cannot be too small, and is required to be 0.5mm or more, so that the fitting between the caulking projections and the protection plate 20 is reasonable, and a sufficient contact area is provided between the caulking projections and the protection plate 20, thereby making the connection between the caulking projections and the protection plate 20 more firm and stable. Of course, the size of a must not be too large, and it is required to be equal to or less than the thickness b of the protection plate 20, so that the caulking projections can be prevented from exceeding the boundary of the protection plate 20, and thus, the space waste and the safety problems such as short circuit can be prevented.

In addition, the maximum distance between two points of projection of the riveting projection on the protection plate 20 is D, and the value range of D is: d is more than or equal to 0.3mm and less than or equal to 5mm. It should be noted that, the shape of the mating surface of the riveting protrusion and the riveting groove may be circular, rectangular, triangular, etc., but in order to make the connection between the riveting protrusion and the riveting groove more stable, the shape and the size of the mating surface of the riveting protrusion and the riveting groove need to be within a proper range, for example: when the shape of the mating surface of the rivet protrusion and the rivet groove is circular, the maximum distance between two points of projection of the rivet protrusion on the protection plate 20, that is, the diameter of the rivet protrusion, D, needs to be within a proper range, the value of D cannot be too small, and is not less than 0.3mm, so that the contact area between the rivet protrusion and the rivet groove can be ensured, and the peel force between the rivet protrusion and the rivet groove can be ensured to be not less than 1.5kgf, so that the connection between the rivet protrusion and the rivet groove is more firmly and stably, the passage of large current is facilitated, the temperature rising speed of the battery can be reduced, the value of D cannot be too large, and is not more than 5mm. The range of D may be appropriately adjusted according to the actual situation.

It should be noted that, the number, the size, the spacing and the like of the riveting positions on each tab 10 can be set according to the actual situation, so as to ensure stable electrical connection between the tab 10 and the protection plate 20, and meanwhile, setting of riveting process parameters is required according to the actual situation, so that excessive deformation of the tab 10 and the protection plate 20 when being stressed is avoided, and normal work is affected. The number of tabs 10 connected to the protection plate 20 is not limited when the nailless riveting is used.

Furthermore, as shown in fig. 5, the connection assembly 1 further includes: the rivet 30, the first caulking portion 11 is a first caulking hole 113, the second caulking portion 21 is a second caulking hole 213, and the rivet 30 penetrates the first caulking hole 113 and the second caulking hole 213 so that the tab 10 and the protection plate 20 are electrically connected by the rivet 30. The rivet 30 mainly plays a role in riveting, both the first riveting hole 113 and the second riveting hole 213 can play a role in auxiliary connection, the rivet 30 is penetrated through the first riveting hole 113 and the second riveting hole 213, so that the tab 10 and the protection plate 20 can be connected and fixed by using the rivet 30, the connection between the tab 10 and the protection plate 20 is firmer and more stable, and in addition, current can flow between the tab 10 and the protection plate 20 through the rivet 30, thereby realizing electric connection between the tab 10 and the protection plate 20. In addition, the first rivet hole 113 and the second rivet hole 213 have simple structures, and are convenient to process and set.

Specifically, as shown in fig. 5, the rivet 30 includes: the first rivet head 31, the rivet column 32 and the second rivet head 33, the first rivet head 31 and the second rivet head 33 are respectively connected to two ends of the rivet column 32, the rivet column 32 is penetrated through the first riveting hole 113 and the second riveting hole 213, the first rivet head 31 is clamped on the tab 10, and the second rivet head 33 is clamped on the protection plate 20.

After the rivet 30 passes through the first and second rivet holes 113 and 213, an axial force may be applied to the rivet 30, so that both ends of the rivet 30 may be upset, thereby forming the first and second rivet heads 31 and 33, with the middle portion being the rivet stem 32. The first rivet head 31 is clamped on the tab 10, the second rivet head 33 is clamped on the protection plate 20, so that the tab 10 and the protection plate 20 can be clamped together through the first rivet head 31 and the second rivet head 33, the tab 10 and the protection plate 20 can be relatively fixed, and the tab 10 and the protection plate 20 can be electrically connected through the first rivet head 31, the rivet post 32 and the second rivet head 33.

Further, a conductive layer is disposed on the protection plate 20, and the conductive layer is electrically connected to the second rivet. The conducting layer mainly plays a role in conducting electricity, and is electrically connected with the second rivet joint, so that a current path can be formed between the conducting layer and the second rivet joint, and current on the tab 10 can flow to the protection plate 20 through the rivet 30, and then the protection plate 20 can control the current and the voltage of the battery in the charging and discharging process, so that the battery is prevented from being overcharged or overdischarged, the battery is damaged, and the protection of the battery is realized.

It should be noted that, the number, the size, the spacing, etc. of the riveting positions of the rivets 30 on each tab 10 may be set according to the actual situation, so as to ensure the stable electrical connection between the tab 10 and the protection plate 20, and meanwhile, the setting of the riveting process parameters needs to be performed according to the actual situation.

As an alternative embodiment, the protection plate 20 may be further provided with a metal sheet, and the tab 10 is welded to the metal sheet. The metal sheet also mainly plays a role in conducting electricity, the metal sheet is arranged on the protection plate 20, the electrode lug 10 is connected with the metal sheet in a welded mode, the electrode lug 10 and the protection plate 20 can be connected and fixed through the metal sheet, current on the electrode lug 10 can flow to the protection plate 20 through the metal sheet, so that electric connection between the electrode lug 10 and the protection plate 20 is achieved, the protection plate 20 can control current and voltage of a battery in a charging and discharging process, the battery is prevented from being overcharged or overdischarged, the battery is prevented from being damaged, and protection of the battery is achieved.

In summary, each tab 10 and the protection plate 20 may be connected by non-nail riveting or all by nail riveting, or a part of the tab 10 and the protection plate 20 are connected by non-nail riveting, and the rest of the tab 10 and the protection plate 20 are connected by nail riveting, or a metal sheet is disposed on the protection plate 20, and a part of the tab 10 and the metal sheet are welded to realize connection with the protection plate 20, and the rest is selected from non-nail riveting and nail riveting. The connection mode of the tab 10 and the protection plate 20 may be selected from the modes of non-nail riveting, welding connection through metal sheets, etc., according to actual conditions.

A battery according to an embodiment of the present utility model includes: the connection assembly 1 of the battery described in the above embodiment.

According to an embodiment of the utility model, a powered device includes: the battery described in the above embodiment. Wherein the powered device includes, but is not limited to, a 3C consumer battery, an energy storage device, or a vehicle.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features. In the description of the present utility model, "plurality" means two or more. In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A connection assembly of a battery, comprising:

a tab (10), wherein a first rivet joint part (11) is arranged on the tab (10);

And a protective plate (20), wherein a second caulking portion (21) is provided on the protective plate (20), and the first caulking portion (11) is in caulking engagement with the second caulking portion (21).

2. The battery connection assembly according to claim 1, wherein the first caulking portion (11) is a caulking protrusion, the second caulking portion (21) is a caulking groove, and the caulking protrusion is caulking-fitted with the caulking groove.

3. The connection assembly of a battery according to claim 2, wherein the rivet protrusion includes: a first caulking protrusion (111) and a second caulking protrusion (112), the first caulking protrusion (111) being connected with the second caulking protrusion (112) in a thickness direction of the tab (10), the caulking groove comprising: first riveting groove (211) and second riveting groove (212), first riveting groove (211) with second riveting groove (212) are linked together, just first riveting groove (211) are located the outside of second riveting groove (212), first riveting protruding (111) with first riveting groove (211) riveting cooperation, second riveting protruding (112) with second riveting groove (212) riveting cooperation.

4. A connection assembly of a battery according to claim 3, wherein the cross-sectional area of the first caulking groove (211) is smaller than the cross-sectional area of the second caulking groove (212) in the thickness direction of the protection plate (20).

5. The connection assembly of the battery according to claim 2, wherein the protruding dimension of the caulking protrusion in the thickness direction of the tab (10) is a, the thickness of the protection plate (20) is b, and the relationship between a and b is: a is more than or equal to 0.5mm and b is more than or equal to 0.5 mm.

6. The battery connection assembly according to claim 2, wherein the maximum distance between two points of projection of the riveting projection on the protection plate (20) is D, and the range of D is: d is more than or equal to 0.3mm and less than or equal to 5mm.

7. The connection assembly of a battery according to claim 1, further comprising: the first riveting part (11) is a first riveting hole (113), the second riveting part (21) is a second riveting hole (213), and the rivet (30) penetrates through the first riveting hole (113) and the second riveting hole (213) so that the tab (10) and the protection plate (20) are electrically connected through the rivet (30).

8. The connection assembly of a battery according to claim 7, wherein the rivet (30) comprises: first rivet head (31), rivet post (32) and second rivet head (33), first rivet head (31) with second rivet head (33) connect respectively in the both ends of rivet post (32), rivet post (32) wear to establish first rivet hole (113) with second rivet hole (213), first rivet head (31) joint in on utmost point ear (10), second rivet head (33) joint in on protection shield (20).

9. The battery connection assembly according to claim 8, wherein a conductive layer is provided on the protection plate (20), the conductive layer being electrically connected with the second rivet head (33).

10. A battery, comprising: the connection assembly (1) of a battery according to any one of claims 1-9.

11. A powered device, comprising: the battery as recited in claim 10.