CN215911545U

CN215911545U - A switching subassembly and battery module for electric core

Info

Publication number: CN215911545U
Application number: CN202122383117.0U
Authority: CN
Inventors: 宋海阳
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-02-25
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a switching assembly and a battery module for a battery cell, wherein the switching assembly comprises: the busbar body is suitable for being connected with a pole of the battery cell; the connecting part is connected with the busbar body, is bent relative to the busbar body and extends towards a direction far away from the busbar body; the adapter is provided with a matching part which is suitable for being matched with the connecting part, and the connecting part is matched with the matching part in an inserting mode. According to the adapter assembly for the battery core, the problem of moment attenuation can be solved, the time of bolt connection is saved, the risk of fire catching of the battery module is reduced, the assembly space of the battery module can be saved, and the cost of the battery module is reduced.

Description

A switching subassembly and battery module for electric core

Technical Field

The utility model relates to the field of batteries, in particular to a switching assembly for a battery core and a battery module.

Background

Among the correlation technique, the busbar outer end of battery module adopts "Z" shape supporting structure to realize being connected with the copper bar usually, is formed with the bolted connection hole on supporting structure, adopts the mode of spiro union to be connected between supporting structure and the copper bar, but adopts the fixed problem that probably has moment decay of spiro union mode to increased the risk that battery module catches fire, in addition, the fixed assembly space that still can increase the battery package of spiro union, increased the cost of battery package.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an adapter assembly for a battery cell, which can solve the problem of torque attenuation, save the time of bolt connection, reduce the risk of fire of a battery module, and also can reduce the assembly space of the battery module, thereby reducing the cost of the battery module.

The utility model also provides a battery module with the switching component.

The switching assembly for the battery cell comprises the following components: the busbar body is suitable for being connected with a pole of the battery cell; the connecting part is connected with the busbar body, is bent relative to the busbar body and extends towards a direction far away from the busbar body; the adapter is provided with a matching part which is suitable for being matched with the connecting part, and the connecting part is matched with the matching part in an inserting mode.

According to the switching assembly for the battery cells, which is disclosed by the utility model, the switching assembly is provided with the switching piece, and the switching piece can be fixed with two adjacent battery cells in a plugging fit manner at the same time, so that the two adjacent battery cells are electrically connected.

According to one embodiment of the present invention, the connecting portion is configured as a fitting protrusion and is bent and connected with the busbar body; the mating portion is configured as a mating recess.

According to one embodiment of the present invention, a contact piece adapted to cover the connection portion is formed in the fitting groove, and at least a part of the contact piece protrudes toward the inside of the fitting groove.

According to one embodiment of the utility model, the contact sheet comprises: a bottom connecting sheet; the side connection piece, the side connection piece sets up the both sides of bottom connection piece and orientation are kept away from the direction of bottom connection piece extends, the side connection piece includes a plurality of connection sections that connect gradually and extending direction difference each other.

According to one embodiment of the present invention, the thickness of the contact piece is not less than 0.1mm and not more than 0.3 mm.

According to one embodiment of the utility model, the adapter assembly further comprises: a protective sleeve disposed at the periphery of the fitting portion.

According to one embodiment of the utility model, the adaptor comprises: the adapter body, the cooperation portion structure is two and sets up in the both ends of adapter body, the adapter body with cooperation portion integrated into one piece.

The battery module according to the present invention is briefly described below.

According to the utility model, the battery module is provided with the battery modules and the switching assemblies of the above embodiments, each battery module is internally provided with a plurality of battery cells, the switching assemblies are suitable for connecting two adjacent groups of battery cells, and the switching assemblies can be fixed with the two adjacent battery cells in a plug-in fit manner, so that the battery module can solve the problem of moment attenuation, save the time of bolt connection, reduce the risk of fire of the battery module, and reduce the cost of the battery module due to small assembly space of the battery module.

According to one embodiment of the present invention, the battery module includes: the bus bar body is arranged in the accommodating cavity and positioned on the bottom wall of the accommodating cavity; the battery cell is arranged in the accommodating cavity and abutted against the busbar body.

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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a battery module according to an embodiment of the present invention;

FIG. 2 is a schematic view of an assembly of a busbar and a connecting portion according to an embodiment of the present invention;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a schematic structural view of a mating portion according to an embodiment of the present invention;

FIG. 5 is a bottom view of FIG. 4;

fig. 6 is a side view of an adapter according to an embodiment of the utility model.

Reference numerals:

the battery module (10) is provided with a battery,

a housing 11, a sampling member 12, a battery management unit 13, a battery cell 14, a busbar body 15,

a connecting part 16, an adaptor 17, a matching part 171, a hook part 1711,

contact tab 172, bottom attachment tab 1721, side attachment tab 1722,

a protective sleeve 173, an adaptor body 174.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes, with reference to fig. 1 to 6, that an adapter assembly for a battery cell 14 according to an embodiment of the present invention includes a busbar body 15, a connecting portion 16, and an adapter 17, where the busbar body 15 is adapted to be connected to a pole of the battery cell 14, the connecting portion 16 is connected to the busbar body 15 and is bent relative to the busbar body 15 and extends away from the busbar body 15, the adapter 17 is provided with a matching portion 171 adapted to be matched with the connecting portion 16, and the connecting portion 16 is in plug-in fit with the matching portion 171.

Particularly, busbar body 15 can set up the one end at electric core 14 to busbar body 15 can end with the utmost point post of electric core 14 one end and link to each other, and wherein, the lower surface and the 15 face-to-face laminating of busbar body of utmost point post consequently need not welding operation when the assembly, have reduced the battery module 10 processing degree of difficulty, have improved machining efficiency, thereby have reduced the cost of battery module 10. Meanwhile, when the battery cell 14 needs to be maintained, the battery cell 14 can be directly maintained only by detaching the battery cell 14 from the busbar body 15, so that the maintenance difficulty is reduced, and the maintenance efficiency is improved.

The connection portion 16 is provided at one end of the busbar body 15, and the connection portion 16 is connected to the busbar body 15, and the connection portion 16 may extend toward a side portion of the battery cell 14. The connecting portion 16 and the busbar body 15 may be fixed by welding, or the connecting portion 16 and the busbar body 15 may be configured as an integral molding. The connection part 16 may extend in a vertical direction to be adapted to the adaptor 17, the connection part 16 may be disposed perpendicular to the busbar body 15, and a length of the connection part 16 may be set between 40mm and 100mm, and a length of the connection part 16 is preferably 70 mm.

The adaptor 17 may be configured in a "U" shape, and a plurality of matching portions 171 are disposed on the adaptor 17, and the plurality of matching portions 171 may be in plug-in fit with the connection portion 16, and in a specific embodiment of the present invention, the connection portions 16 of two adjacent battery cells 14 are in plug-in fit with the matching portions 171 of the same adaptor 17 to connect two battery cells 14. Further, the adaptor 17 includes a connecting copper bar thereon, and the adaptor 17 is suitable for connecting two battery cells 14.

In short, according to the adapter assembly for the battery cells 14 of the present invention, the adapter 17 is provided, and the adapter 17 can be fixed with two adjacent battery cells 14 in a plug-in fit manner, so as to electrically connect the two adjacent battery cells 14.

According to an embodiment of the present invention, one of the connecting portion 16 and the mating portion 171 is configured as a mating protrusion, the other of the connecting portion 16 and the mating portion 171 is configured as a mating recess, one end of the mating protrusion can be bent and connected with the busbar body 15, and the other end of the mating protrusion can be inserted into the mating recess.

According to an embodiment of the present invention, as shown in fig. 2 and 3, the fitting protrusion is configured to be gradually reduced in size in the extending direction, and therefore, a guide slope is formed on the fitting protrusion, and the guide slope may play an effective guide role when the fitting protrusion is inserted into the fitting groove, and in particular, when the fitting protrusion is inserted into the fitting groove, since the thickness of the free end of the fitting protrusion is smaller than the width of the fitting groove, it is convenient to insert the fitting protrusion into the fitting groove.

According to one embodiment of the utility model, the cross section of the matching protrusion is triangular or isosceles trapezoid, so that the matching protrusion can be conveniently cut by workers, and meanwhile, the requirement that the size of the matching protrusion in the extending direction is gradually reduced can be met, so that the matching protrusion can be conveniently inserted into the matching groove.

According to an embodiment of the present invention, a latching protrusion is formed on the mating protrusion, a latching portion 1711 abutting against the latching protrusion is formed in the mating recess, and by snap-fitting the latching protrusion and the latching portion 1711, one end of the latching protrusion is attached to an inner surface of the latching portion 1711 to limit movement of the latching protrusion, so that the mating protrusion is fixed in the mating recess, further, the latching portion 1711 may be configured in two, two latching portions 1711 are disposed at an opening of the mating recess, and the two latching portions 1711 extend toward each other, when the mating protrusion and the mating recess are inserted, as the mating protrusion is inserted into the mating recess, after the mating protrusion is completely inserted into the mating recess, an outer surface of the mating protrusion may contact the latching portion 1711 to push the latching portion 1711 to bend outward until the latching protrusion is snap-fitted with the latching portion 1711, the latching protrusion may be configured as a step surface formed at an initial end of the mating protrusion, the stepped surface is attached to the inner surface of the hook 1711 to limit the movement of the clamping protrusion and prevent the connecting portion 16 from being disengaged from the mating recess.

According to an embodiment of the present invention, a contact piece 172 adapted to cover the connection portion 16 is formed in the mating groove, the contact piece 172 may be configured as a metal piece, specifically, the thickness of the contact piece 172 may be set between 0.1mm and 0.3mm, the thickness of the contact piece 172 is preferably 0.2mm, by setting the thickness of the contact piece 172 in the above range, it is possible to ensure that the contact piece 172 has good elasticity, at least a portion of the contact piece 172 may protrude toward the inside of the mating groove, wherein the contact piece 172 may be configured as a wave shape, when the mating protrusion is plugged into the mating groove, since the size of the mating protrusion is gradually reduced in the extending direction, after the mating protrusion is plugged into the mating groove, a certain gap may exist between the mating protrusion and the mating groove, at least a portion of the contact piece 172 may protrude toward the inside of the mating groove, so that the mating protrusion is sufficiently contacted with the mating groove, the contact piece 172 can maintain the pressure with the mating protrusion by deformation, thereby improving the efficiency of the electrical conduction between the mating protrusion and the mating groove.

As shown in fig. 6, the contact pad 172 includes a bottom connection pad 1721 and a side connection pad 1722, according to one embodiment of the utility model. Bottom connection piece 1721 and the protruding free end contact of cooperation, side connection piece 1722 sets up the both sides at bottom connection piece 1721, and side connection piece 1722 extends towards the direction of keeping away from bottom connection piece 1721, side connection piece 1722 includes a plurality of different linkage segments of direction of extension each other that connect gradually, when cooperation arch is pegged graft with the cooperation recess, side connection piece 1722 can be through warping, make the protruding and abundant contact of cooperation recess of cooperation, furthermore, bottom connection piece 1721 and side connection piece 1722 can construct as an organic whole formed part.

According to an embodiment of the present invention, the adaptor assembly further includes a protective sleeve 173, the protective sleeve 173 is disposed at an outer periphery of the mating portion 171, wherein the protective sleeve 173 may be configured as an insulating material, specifically, the protective sleeve 173 may be configured as an insulating plastic housing, and after the mating protrusion is inserted into the mating groove, the protective sleeve 173 may play a role in insulation and protection, and also may play a role in limiting, so as to prevent a problem of looseness between the mating protrusion and the mating groove due to deformation of the mating groove.

According to an embodiment of the present invention, the adaptor 17 includes an adaptor body 174, the two mating portions 171 may be configured as two, the two mating portions 171 are disposed at two ends of the adaptor body 174, the adaptor body 174 and the mating portions 171 may be configured as an integral molding, wherein the adaptor body 174 may be configured as a connecting copper bar, and the adaptor body 174 may function to electrically connect the two battery cells 14, the adaptor body 174 may be configured as a "U" shape, a protective sleeve 173 may be disposed at a mating position of the adaptor body 174 and the mating portion 171, and the protective sleeve 173 may function as an insulation protection.

According to an embodiment of the present invention, the battery module 10 further includes a housing 11, a receiving cavity is formed in the housing 11, the receiving cavity is used for receiving the battery cell 14, and the upper end of the housing 11 is open so as to be suitable for the battery cell 14 to be assembled from the upper end. The housing 11 may be made of a hard insulating material, so as to be suitable for protecting the battery cells 14 in the accommodating cavity, improve the overall strength of the battery module 10, and under the condition of ensuring sufficient strength, any part of the housing 11 may be provided with a lightening hole in any shape, so as to reduce the weight of the housing 11 and achieve a light-weight design of the battery module 10.

According to an embodiment of the present invention, as shown in fig. 1, the battery module 10 further includes a sampling member 12, the sampling member 12 is disposed in the receiving compartment to facilitate installation of the sampling member 12, and the sampling member 12 can be connected to the bus bar body 15 to collect information of the bus bar body 15, such as a current temperature, a current, and the like of the bus bar body 15, and transmit the information to the battery management unit 13. Alternatively, the sampling member 12 and the battery management unit 13 may be connected by a connector to transmit information, or the sampling member 12 may be directly connected to the battery management unit 13. The sampling piece 12 and the battery management unit 13 are detachably connected through clamping, inserting and the like, or the sampling piece 12 and the battery management unit 13 are connected through welding at a contact surface.

The battery module 10 according to the present invention is briefly described below.

According to the utility model, the battery module 10 is provided with the battery modules and the switching assemblies of the above embodiments, each battery module is provided with a plurality of battery cells 14, the switching assemblies are suitable for connecting two adjacent groups of battery cells 14, and the switching assemblies can be fixed with the two adjacent battery cells 14 in a plug-in fit manner, so that the battery module 10 can solve the problem of moment attenuation, save the time of bolt connection, and reduce the risk of fire catching of the battery module 10, and the battery module 10 has a small assembly space and reduces the cost of the battery module 10.

According to one embodiment of the present invention, the battery module includes a casing 11 and a battery cell 14, a housing cavity adapted to house the battery cell is provided in the casing, a battery cell housing lattice is adapted to house the battery cell 14, and an upper end of the casing 11 is open to be adapted to be assembled from the upper end of the battery cell 14. The casing 11 may be made of a hard insulating material, so as to be suitable for protecting the electric core 14 in the electric core accommodation lattice, improve the overall strength of the battery module 10, and ensure that any part of the casing 11 may be provided with lightening holes of any shape under the condition of sufficient strength, thereby reducing the weight of the casing 11 and realizing the light-weight design of the battery module 10. Busbar body 15 sets up and is holding the intracavity and being located the diapire that holds the chamber, and electric core 14 sets up in holding the intracavity to electric core 14 and busbar body 15 butt need not welding operation when consequently assembling, have reduced the battery module 10 processing degree of difficulty, thereby have improved machining efficiency and have reduced the cost of battery module 10.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the utility model, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims

1. A transition assembly for a cell, comprising:

the busbar body (15), the busbar body (15) is suitable for being connected with the pole of the battery cell;

the connecting part (16) is connected with the bus bar body (15), is bent relative to the bus bar body (15) and extends towards a direction far away from the bus bar body (15);

the connector comprises an adapter piece (17), wherein a matching part (171) suitable for being matched with the connecting part (16) is arranged on the adapter piece (17), and the connecting part (16) is in plug-in matching with the matching part (171).

2. The assembly according to claim 1, characterized in that one of the connecting part (16) and the fitting part (171) is configured as a fitting projection, and the other of the connecting part (16) and the fitting part (171) is configured as a fitting recess, into which the fitting projection is adapted to be inserted.

3. The assembly according to claim 2, characterized in that the connection portion (16) is configured as a mating projection and is connected with the busbar body (15) in a bent manner; the fitting portion (171) is configured as a fitting groove.

4. The switching assembly for electric cores according to claim 3, characterized in that a contact piece (172) suitable for covering the connecting portion (16) is formed in the matching groove, and at least part of the contact piece (172) protrudes towards the inside of the matching groove.

5. The transition assembly for battery cells according to claim 4, wherein the contact piece (172) comprises:

a bottom connection pad (1721);

side connection piece (1722), side connection piece (1722) set up in bottom connection piece (1721) both sides and towards keep away from bottom connection piece (1721) the direction extension, side connection piece (1722) include a plurality of connection sections that connect gradually and extend the different direction each other.

6. The transition assembly for battery cells according to claim 4, wherein the thickness of the contact piece (172) is not less than 0.1mm and not more than 0.3 mm.

7. The transition assembly for a cell of claim 1, further comprising: a protective sleeve (173), wherein the protective sleeve (173) is arranged on the periphery of the matching part (171).

8. The adapter assembly for battery cells according to any of claims 1 to 7, characterized in that the adapter (17) comprises:

the adapter comprises an adapter body (174), the matching parts (171) are two in structure and are arranged at two ends of the adapter body (174), and the adapter body (174) and the matching parts (171) are integrally formed.

9. A battery module, comprising:

the battery module comprises a plurality of battery cells, a plurality of battery cores and a plurality of battery modules, wherein each battery module is internally provided with the plurality of battery cells;

a transition assembly configured as claimed in any one of claims 1 to 8, the transition assembly being adapted to connect two adjacent sets of cells.

10. The battery module according to claim 9, wherein the battery module comprises:

the bus bar body is arranged in the accommodating cavity and positioned on the bottom wall of the accommodating cavity;

the battery cell is arranged in the accommodating cavity and abutted against the busbar body.