CN220544410U

CN220544410U - Electric connection structure, battery package and car

Info

Publication number: CN220544410U
Application number: CN202321995173.2U
Authority: CN
Inventors: 何妙玲; 张耀升; 朱列群; 胡世超; 赖庆
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-02-27
Anticipated expiration: 2033-07-26

Abstract

The application discloses electric connection structure, battery package and car, electric connection structure includes: the first connecting piece is provided with a first positioning hole; the second connecting piece is provided with a second positioning hole; the adapter is provided with a first boss and a second boss; the first boss corresponds to the first positioning hole in shape, and the second boss corresponds to the second positioning hole in shape. The electric connection structure can reduce the number of parts.

Description

Electric connection structure, battery package and car

Technical Field

The application relates to the technical field of electrical parts, and more particularly relates to an electrical connection structure, a battery pack and an automobile.

Background

In the prior art, when a pair of electrical parts need to be connected together, each electrical part needs to be connected with one connecting piece, and two connecting pieces overlap joint together again, and when a plurality of pairs of electrical parts need to be connected, then the connecting piece that needs double quantity causes spare part quantity too much, and connection structure is complicated.

Disclosure of Invention

An object of the present application is to provide a new electric connection structure, battery pack and car to connection effect is more easily observed when two spare parts are connected.

To achieve the above object, in one aspect, an embodiment of the present application provides an electrical connection structure, including:

the first connecting piece is provided with a first positioning hole;

the second connecting piece is provided with a second positioning hole;

the adapter is provided with a first boss and a second boss;

the first boss corresponds to the first positioning hole in shape, and the second boss corresponds to the second positioning hole in shape.

Optionally, in a state that the first connector, the second connector and the adaptor are connected, there is no overlapping portion between the first connector and the second connector in the Z direction.

Optionally, the first connecting piece includes a first positioning portion, the first positioning portion is provided with the first positioning hole, the first positioning hole is a waist-shaped hole, and the first boss is a waist-shaped boss; and/or the second connecting piece comprises a second positioning part, the second positioning part is provided with a second positioning hole, the second positioning hole is a waist-shaped hole, and the second boss is a waist-shaped boss.

Optionally, the long axis of the first boss is disposed at an angle to the long axis of the adapter; and/or the long axis of the second boss is arranged at an angle with the long axis of the adapter.

Optionally, in a state that the first connecting piece, the second connecting piece and the adapting piece are connected, the sum of the areas of the first positioning part and the second positioning part is smaller than the area of the adapting piece.

Optionally, the first connector further comprises a first transition portion disposed at an angle to the first positioning portion; and/or the second connecting piece further comprises a second transition part, and the second transition part and the second positioning part are arranged at an angle.

Optionally, in a state that the first connecting piece, the second connecting piece and the adaptor are connected, the first transition portion and the second transition portion are respectively located at two sides of the adaptor.

Optionally, the first connecting piece further includes a first wiring portion, and the first wiring portion is spaced from the first transition portion; and/or the second connecting piece further comprises a second wiring part, and the second wiring part and the second transition part are arranged at intervals.

Optionally, in the state that the first connecting piece, the second connecting piece and the adaptor are connected, the first connection portion is far away from the adaptor more than the first transition portion, and the second connection portion is far away from the adaptor more than the second transition portion.

Optionally, the first positioning portion has a first edge parallel to a length direction of the first positioning hole, the second positioning portion has a second edge parallel to a length direction of the second positioning hole, and a space exists between the first edge and the second edge in a state that the first connecting piece, the second connecting piece and the adapter are connected.

According to another aspect of the present application, there is provided a battery pack including:

an electrical connection structure as claimed in any preceding claim;

at least two battery modules;

a battery harness;

one of the at least two battery modules is connected with the first connecting piece, the other battery module is connected with the second connecting piece, and the battery wire harness is connected with the adapter piece.

Optionally, the battery pack further includes:

a battery tray having a structural beam with an accommodating groove, the battery harness being accommodated in the accommodating groove and insulated from the structural beam.

Optionally, the battery harness includes a sampling bus having a sampling member connected with the adapter member.

Optionally, the battery pack further includes a low voltage slot, the sampling bus is received in the low voltage slot, and the low voltage slot is received in the receiving slot.

According to still another aspect of embodiments of the present application, there is also provided an automobile mounted with the battery pack as described above.

The beneficial effects of this application embodiment lie in: the locating holes of the two connecting pieces correspond to the two boss shapes of the adapter piece respectively, when the first electrical part and the second electrical part are needed to be connected with the third electrical part, only the first connecting piece, the second connecting piece and the adapter piece are needed, and a pair of connecting pieces and four connecting pieces are not needed to be arranged between the first electrical part and the third electrical part and a pair of connecting pieces are arranged between the second electrical part and the third electrical part, so that the number of parts is effectively reduced, and the connection complexity is reduced.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a perspective view of a first connector of an embodiment of the present application.

Fig. 2 is a front view of a first connector of an embodiment of the present application.

Fig. 3 is a bottom view of a first connector of an embodiment of the present application.

Fig. 4 is a perspective view of a second connector of an embodiment of the present application.

Fig. 5 is a rear view of a second connector of an embodiment of the present application.

Fig. 6 is a bottom view of a second connector of an embodiment of the present application.

Fig. 7 is a perspective view of an adapter of an embodiment of the present application.

Fig. 8 is an exploded view of an electrical connection structure of an embodiment of the present application.

Fig. 9 is an exploded view of a battery pack according to an embodiment of the present application.

Fig. 10 is a perspective view of a sampling bus of an embodiment of the present application.

Fig. 11 is a perspective view of a low voltage wire chase of an embodiment of the present application.

Fig. 12 is a partial enlarged view of the battery pack of the embodiment of the present application, mainly illustrating an electrical connection structure.

Fig. 13 is a partial enlarged view of a battery pack in another position according to an embodiment of the present application.

Reference numerals illustrate:

100. a battery pack; 101. a transverse side beam; 102. longitudinal side beams; 103. a battery accommodating space; 104. tray stringers; 105. a receiving groove; 106. high voltage flat cable; 107. high-voltage wire-arranging groove; 108. a low voltage harness; 1081. a sampling line; 1082. a sampling member; 1083. a quick-plug connector; 109. a low voltage harness slot; 1091. an opening; 110. a pallet beam; 111. a front distribution box; 112. a rear distribution box; 113. a battery module; 1131. sampling a switching wire harness plug; 200. a first connector; 201. a first positioning hole; 202. a first positioning portion; 203. a first transition portion; 204. a first bending part; 205. a first wiring portion; 206. a first edge; 300. a second connector; 301. a second positioning hole; 302. a second positioning portion; 303. a second transition portion; 304. a second bending part; 305. a second wiring section; 206. a second edge; 400. an adapter; 401. a first boss; 402. and a second boss.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the following description, the "longitudinal" direction represents the longitudinal direction of the automobile, and the "transverse" direction represents the width direction of the automobile.

Referring to fig. 1 to 8 and 11, the electrical connection structure of the present embodiment includes: the first connector 200, the second connector 300 and the adapter 400. The first connecting piece 200 is provided with a first positioning hole 201, the second connecting piece 300 is provided with a second positioning hole 301, and the adapter piece 400 is provided with a first boss 401 and a second boss 402. The first boss 401 corresponds to the shape of the first positioning hole 201, and the second boss 402 corresponds to the shape of the second positioning hole 301. That is, if the first boss 401 is circular in shape, the first positioning hole 201 is also circular in shape, and if the first boss 401 is triangular in shape, the first positioning hole 201 is also triangular in shape, and the corresponding form of the second boss 402 and the second positioning hole 301 is similar to that described above. As can be seen more clearly in fig. 11, when electrical connection is required, the first boss 401 is inserted into the first positioning hole 201 and the second boss 402 is inserted into the second positioning hole 301. In this way, the position between the first connector 200 and the second connector 300 is fixed. After the electric connection structure is adopted, if connection points are required to be increased, the number of bosses is only required to be increased on the adapter 400, the number of connecting pieces is correspondingly increased, a pair of connecting pieces is not required to be adopted for connection between every two connecting pieces, and the number of parts is reduced. When the first electrical part and the second electrical part need to be connected with the third electrical part, only three connecting pieces of the first connecting piece, the second connecting piece and the adapter are needed, and a pair of connecting pieces are not needed to be arranged between the first electrical part and the third electrical part, and a pair of connecting pieces are arranged between the second electrical part and the third electrical part, so that the number of parts is effectively reduced, the connection complexity is reduced, and the beneficial effects are further described in detail below in combination with specific examples.

Referring to fig. 8 and 12, in a state in which the first and second connection members 200 and 300 are connected to the adapter 400, there is no overlapping portion of the first and second connection members 200 and 300 in the Z direction, and this structure has an advantage in that the two connection members are not blocked from each other due to overlapping in a subsequent welding process, and if there is a welding defect between the first connection member 200 and the adapter 400 or between the second connection member 300 and the adapter 400, the welding defect can be found in time.

As can be seen from fig. 1 to 3, the first connector 200 includes a first positioning portion 202, on which a first positioning hole 201 is formed, the first positioning hole 201 is a waist-shaped hole, and correspondingly, the first boss 401 is a waist-shaped boss. The waist shape is easy to observe the assembly direction, thereby realizing fool-proof design.

As can be seen from fig. 2 to fig. 6, the second connecting piece 300 includes a second positioning portion 302, a second positioning hole 301 is formed on the second positioning portion 302, the second positioning hole 301 is a waist-shaped hole, and correspondingly, the second boss 402 is a waist-shaped boss. The waist shape is easy to observe the assembly direction, thereby realizing fool-proof design.

Referring to fig. 7, the long axis L1 of the first boss 401 is disposed at an angle to the long axis L3 of the adapter 400, that is, L1 and L3 are not parallel nor coincident, which can facilitate the installation person to easily observe the assembly angle when assembling the first connector 200, thereby realizing a fool-proof design. Similarly, the long axis L2 of the second boss 402 can also be disposed at an angle to the long axis L3 of the adapter 400, as well as to facilitate easy viewing of the assembly angle by an installer when assembling the second connector 300, thereby achieving a fool-proof design.

Referring to fig. 8 and 12, in a state where the first connector 200 and the second connector 300 are connected to the adapter 400, the sum of the area of the first positioning portion 202 and the area of the second positioning portion 302 is smaller than the area of the adapter 400. In other words, on the plane where the first boss 401 and the second boss 402 are located, the first positioning portion 202 and the second positioning portion 302 do not completely cover the adaptor 400, and a portion of the adaptor 400 needs to be exposed, so that connection reliability of the first connector 200 and the second connector 300 to the adaptor 400 can be easily observed, and in addition, an avoidance space can be provided for connection of other parts, such as the sampling member 1082, to the adaptor 400.

Referring to fig. 1-3, the first connector 200 further comprises a first transition 203, the first transition 203 being disposed at an angle to the first positioning portion 202, i.e. the first transition 203 is non-parallel and non-coincident with the first positioning portion 202.

Referring to fig. 4-6, the second connector 300 further comprises a second transition portion 303, the second transition portion 303 being disposed at an angle to the second positioning portion 302, i.e. the second transition portion 303 is not parallel and not coincident with the second positioning portion 302.

Referring to fig. 8, in a state in which the first and second connection members 200 and 300 are connected to the adapter 400, the first and second transition portions 203 and 303 are located at both sides of the adapter 400, respectively. After the first boss 401 is inserted into the first positioning hole 201 and the second boss 402 is inserted into the second positioning hole 301, the first transition portion 203 and the second transition portion 303 are respectively located at two sides of the adapter 400, so that the first transition portion 203 and the second transition portion 303 can respectively assist in positioning of the first connecting piece 200 and the second connecting piece 300, extrusion of peripheral parts to the two transition portions can be utilized, the first connecting piece 200, the second connecting piece 300 and the adapter 400 are attached to appropriate positions, and the problems of follow-up virtual welding, weld cracking and the like are avoided.

As can be seen from fig. 1 to 3, the first connector 200 further comprises: a first bending portion 204 disposed at an angle to both the first positioning portion 202 and the first transition portion 203; the first connection portion 205 is disposed at an angle to the first bending portion 204. The first connection portion 205 is spaced apart from the first transition portion 203. The spacing arrangement can be formed by stamping a piece material or by welding.

As can be seen from fig. 4 to 6, the second connector 200 further comprises: the second bending part 304 is arranged at an angle to both the second positioning part 302 and the second transition part 303; the second connection portion 305 is disposed at an angle to the second bending portion 304. The second connection portion 305 is spaced apart from the second transition portion 303. The spacing arrangement can be formed by stamping a piece material or by welding.

As can be seen in fig. 8, after the first connector 200 and the second connector 300 are connected to the adaptor 400, the first wire connection portion 205 is parallel to the second wire connection portion 305 and is located on two sides of the adaptor 400. The first wire portion 205 is farther from the adapter 400 than the first transition portion 203, and the second wire portion 305 is farther from the adapter 400 than the second transition portion 303. The structure has the advantages that the connection between the two connecting pieces and the peripheral wire harness is facilitated, the connection point between the two connecting pieces and the peripheral wire harness can be kept away as far as possible, and the risks of arc discharge, short circuit and the like are reduced.

As can be seen in fig. 1, the first positioning hole 201 is a waist-shaped hole, and the first positioning portion 202 has a first edge 206 parallel to the longitudinal direction (i.e., the dash-dot line direction in fig. 1) of the first positioning hole 201.

As can be seen in fig. 4, the second positioning hole 301 is a waist-shaped hole, and the second positioning portion 302 has a second edge 306 parallel to the length direction (i.e., the dash-dot line direction in fig. 4) of the second positioning hole 301.

As can be seen in fig. 12, after the first connector 200 and the second connector 300 are connected to the adaptor 400, there is a space between the first edge 206 and the second edge 306. This configuration allows the two connectors to be staggered but not overlapping, which facilitates the simultaneous observation of whether the two connectors have been separated from the adapter 400 and dropped during the subsequent welding process.

In order to improve the connection strength, after the first boss 401 is inserted into the first positioning hole 201 and the second boss 402 is inserted into the second positioning hole 301, the first connector 200 and the adaptor 400 are welded and connected along the edge of the first boss 401 and the first positioning hole 201; the second connector 300 is welded to the adaptor 400 along the second boss 402 and the edge of the second positioning hole 301.

Referring to fig. 9 to 13, the battery pack 100 includes the electrical connection structure as described above. The battery pack 100 further includes: at least two battery modules 113; a battery harness; of the at least two battery modules 113, one battery module 113 is connected with the first connector 200, the other battery module 113 is connected with the second connector 300, and the battery harness is connected with the adapter 400. In this way, the connection between the two battery modules 113 and the battery harness are realized, and only three parts of the first connector 200, the second connector 300 and the adapter 400 are needed to realize the connection relationships, so that the parts are few and the connection relationship is simple.

The battery tray has a tray rail 104, the tray rail 104 having a receiving groove 105, and the battery harness is received in the receiving groove 105 and electrically insulated from the tray rail 104.

In fig. 9, the battery tray includes a pair of lateral side rails 101 and a pair of longitudinal side rails 102, and the lateral side rails 101 and the longitudinal side rails 102 are connected together to form a frame-type structure. But the present application can also employ a battery tray structure of the integrally cast, integrally stamped type. Since the battery harness is accommodated in the accommodation groove 105 of the tray rail 104 and is electrically insulated from the tray rail 104, a large portion of the battery harness can be protected by the tray rail 104, and adverse effects on the battery harness are reduced when the battery module in the battery accommodation space 103 is thermally out of control. Although the receiving groove 105 in the present embodiment is formed in the pallet side member 104, the lateral side member 101 and the longitudinal side member 102 can also have the receiving groove 105, and therefore, the pallet side member 104, the lateral side member 101, the longitudinal side member 102, and other beam members can be referred to as structural beams, and the structural beams have the receiving groove 105.

Alternatively, as can be seen in fig. 9, the battery harness includes a high voltage harness or a low voltage harness. The high voltage harness includes a high voltage bus 106 and a high voltage bus duct 107. The high voltage bus bar 106 is made of copper, aluminum, or the like, and is used for high voltage connection with the battery modules, such as bus bars of the respective battery modules. The high-voltage wire-discharge groove 107 is made of an insulating material, the high-voltage wire-discharge 106 is accommodated in the high-voltage wire-discharge groove 107, and then the high-voltage wire-discharge groove 107 is accommodated in the accommodation groove 105, thereby electrically insulating the high-voltage wire-discharge 106 from the pallet side member 104.

Referring to fig. 10, the low voltage line optionally includes a sampling bus 108. The sampling bus 108 includes a plurality of sampling lines 1081, the plurality of sampling lines 1081 being encased together by an insulating layer to form one sampling bus 108. The low voltage wiring harness can also include other signal lines.

Referring to fig. 11, the battery pack further includes a low voltage wire groove 109. The low voltage slot 109 is made of an insulating material and the sampling bus 108 is received in the low voltage slot 109 and the low voltage slot 109 is received in the receiving slot 105 to electrically isolate the sampling bus 108 or other low voltage harness from the pallet stringers 194.

As can be seen in fig. 10, sampling bus 108 has a plurality of sampling connectors including sampling member 1082 and quick connect connector 1083. As can be seen in fig. 11, the low voltage groove 109 has a plurality of openings 1091, and the sampling connector, including sampling member 1082 and quick connector 1083, extends from the openings 1091 and is then sealed with a sealant applied to the openings 1091.

The low-voltage wire grooves 109 and the high-voltage wire grooves 107 can be formed by extrusion of composite materials, and the manufacturing is simple.

Alternatively, the tray rail 104 is an extruded U-shaped rail, and the receiving groove 105 is formed at the top of the tray rail 104, which facilitates the arrangement of the battery harness.

As can be seen from fig. 9, the battery tray further comprises a tray cross member 110, the tray longitudinal member 104 crossing the tray cross member 110, thereby dividing the battery tray into a plurality of battery receiving spaces 103. The tray longitudinal beam 104 and the tray transverse beam 103 can jointly improve the structural strength of the battery tray.

As more clearly seen in fig. 12, at least two battery modules 113 are installed in the battery receiving space 103, and the sampling member 1082 of the battery harness is welded or riveted to the adapter 400. One battery module 113 is connected to the first connector 200, and the other battery module is connected to the second connector 300. Thus, the battery module 113 can transmit the sampling signal to the sampling bus 108 through the adapter 400, the first connector 200, and the second connector 300.

As can be seen more clearly in fig. 13, a battery module 113 is mounted in the battery accommodation space 103, and the quick connector 1083 of the sampling bus 108 is connected to the sampling patch cord plug 1131 of the battery module 113.

Referring to fig. 9, one lateral side beam 101 is provided with a front distribution box 111, and the other lateral side beam 101 is provided with a rear distribution box 112. The sampling connector includes a quick connect connector 1083, the quick connect connector 1083 mating with a low voltage plug (not shown) of the front or rear electrical box 111, 112.

Alternatively, the receiving slot 105 extends through the pallet stringer 104 in the longitudinal direction, which enables the sampling bus 108 to be protected by the pallet stringer 104 until the quick connector 1083 of the sampling line 1081 protrudes into the front or rear electrical box 111, 112.

Although the electrical connection structure shown in fig. 1 to 8 is applied to the battery pack 100 in the present embodiment, the electrical connection structure in the present application can also be applied to connection between other electrical components requiring electrical connection, such as an inverter, an air conditioner, and the like.

Embodiments also provide an automobile that mounts the battery pack 100 as described above or uses the electrical connection structure as described above to connect electrical components that need to be connected.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. An electrical connection structure, comprising:

the first connecting piece is provided with a first positioning hole;

the second connecting piece is provided with a second positioning hole;

the adapter is provided with a first boss and a second boss;

2. The electrical connection structure according to claim 1, wherein in a state where the first connection member, the second connection member, and the adapter member are connected, there is no overlapping portion of the first connection member and the second connection member in the Z direction.

3. The electrical connection structure of claim 1, wherein the first connector includes a first positioning portion, the first positioning portion is provided with the first positioning hole, the first positioning hole is a waist-shaped hole, and the first boss is a waist-shaped boss; and/or the second connecting piece comprises a second positioning part, the second positioning part is provided with a second positioning hole, the second positioning hole is a waist-shaped hole, and the second boss is a waist-shaped boss.

4. The electrical connection of claim 3, wherein the long axis of the first boss is disposed at an angle to the long axis of the adapter; and/or the long axis of the second boss is arranged at an angle with the long axis of the adapter.

5. The electrical connection structure according to claim 3, wherein a sum of areas of the first positioning portion and the second positioning portion is smaller than an area of the adapter in a state where the first connector, the second connector, and the adapter are connected.

6. The electrical connection of claim 3, wherein the first connector further comprises a first transition portion disposed at an angle to the first positioning portion; and/or the second connecting piece further comprises a second transition part, and the second transition part and the second positioning part are arranged at an angle.

7. The electrical connection structure of claim 6, wherein the first transition portion and the second transition portion are located on both sides of the adapter in a state in which the first connector, the second connector, and the adapter are connected.

8. The electrical connection structure of claim 6, wherein the first connector further comprises a first wire connection portion spaced from the first transition portion; and/or the second connecting piece further comprises a second wiring part, and the second wiring part and the second transition part are arranged at intervals.

9. The electrical connection structure of claim 8, wherein in a state in which the first connection member, the second connection member, and the adapter member are connected, the first connection portion is farther from the adapter member than the first transition portion, and the second connection portion is farther from the adapter member than the second transition portion.

10. The electrical connection structure according to claim 3, wherein the first positioning portion has a first edge parallel to a longitudinal direction of the first positioning hole, the second positioning portion has a second edge parallel to a longitudinal direction of the second positioning hole, and a space exists between the first edge and the second edge in a state where the first connector, the second connector, and the adapter are connected.

11. A battery pack, comprising:

the electrical connection structure of any one of claims 1 to 10;

at least two battery modules;

a battery harness;

12. The battery pack of claim 11, wherein the battery pack further comprises:

13. The battery pack of claim 11, wherein the battery harness includes a sampling bus having a sampling member, the sampling member being coupled to the adapter member.

14. The battery pack of claim 13, further comprising a low voltage slot within which the sampling bus is received, the low voltage slot being received within a receiving slot of a structural beam of the battery pack.

15. An automobile, characterized in that the automobile employs the electrical connection structure according to any one of claims 1 to 10, or is mounted with the battery pack according to any one of claims 11 to 14.