CN219717182U

CN219717182U - Busbar protector and battery pack

Info

Publication number: CN219717182U
Application number: CN202222995555.7U
Authority: CN
Inventors: 李波; 王进军; 陈一川
Original assignee: Suzhou Shidai Xin'an Energy Technology Co ltd
Current assignee: Suzhou Shidai Xin'an Energy Technology Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-09-19
Anticipated expiration: 2032-11-10

Abstract

The embodiment of the utility model provides a busbar protection device and a battery pack. The busbar protection device comprises a plurality of channels, the channels are arranged at intervals, and each channel is used for accommodating each connecting part; each channel comprises a first through hole and a second through hole, and the first through hole and the second through hole are respectively arranged at two ends of the channel. The busbar protection device can integrate a plurality of connecting parts of the busbar and then is connected with the power control unit, so that the connection difficulty can be effectively reduced, and more assembly space is released.

Description

Busbar protector and battery pack

Technical Field

The utility model belongs to the technical field of electric automobiles, and particularly relates to a busbar protection device and a battery pack.

Background

The electric automobile has the characteristics of energy conservation, environmental protection, no dependence on non-renewable resources such as petroleum and the like, becomes an important component in the global automobile industry, and is increasingly widely applied. In the electric energy transmission of a high-voltage system of an electric automobile battery pack, because the internal space of the battery pack is limited, in order to save space and facilitate the realization of electric energy transmission in a smaller space, a bus is generally adopted to be connected with a high-voltage connector and a power control unit in a conductive manner.

The busbar is a high-current conductive product, has the advantages of low resistivity, high bending degree and the like, and plays roles of conveying current and connecting electrical equipment in a circuit. Because the high-voltage connector of the electric automobile and the power control unit in the prior art are independently interconnected, the connecting mode requires more parts, occupies large space and is complex to assemble.

Therefore, in order to reduce assembly complexity and save the internal space of the battery pack of the electric automobile, the utility model provides a busbar protecting device and the battery pack.

Disclosure of Invention

The busbar protection device provided by the embodiment of the utility model can reduce the assembly complexity and save the internal space of the battery pack of the electric automobile.

In one aspect, an embodiment of the present utility model provides a bus bar protection device, including: the plurality of channels are arranged at intervals and are respectively used for accommodating the connecting parts;

each channel comprises a first through hole and a second through hole, and the first through hole and the second through hole are respectively arranged at two ends of the channel.

According to any one of the embodiments of the first aspect of the present utility model, the busbar protection device further includes a spacer and a plurality of stoppers, the spacer is disposed around the channel and includes a receiving groove recessed in a direction away from the channel, one end of the stopper is a fixed end and the other end of the stopper is a clamping end, at least a portion of the fixed end is received in the receiving groove, and the clamping end protrudes from the receiving groove to the channel.

According to any one of the embodiments of the first aspect of the present utility model, the clamping end includes a guiding surface, the guiding surface faces the channel, and an included angle formed between the guiding surface and a direction from the clamping end to the fixed end is an acute angle.

According to any one of the embodiments of the first aspect of the present utility model, the limiting member further includes an elastic connecting rod connected between the fixed end and the clamping end, and the elastic connecting rod is spaced from the spacer.

According to any one of the embodiments of the first aspect of the present utility model, the channel is provided with a mounting groove recessed from the channel surface and communicating with the receiving groove for mounting the fixed end of the stopper.

According to any of the foregoing first aspect of the utility model, the channel comprises a first connecting groove and a second connecting groove in communication, the first connecting groove extending in a first direction, the second connecting groove extending in a second direction, the first direction intersecting the second direction.

According to any one of the embodiments of the first aspect of the present utility model, the plurality of first connection grooves are arranged in parallel along the second direction, and the plurality of first connection grooves are arranged in parallel along the first direction.

According to any of the foregoing first aspect of the present utility model, the busbar protection device further includes a plurality of connection holes, the connection holes being spaced apart from the channels.

An embodiment of the second aspect of the present utility model provides a battery pack including a case for accommodating a battery cell, a controller, and a bus bar, the bus bar being mounted in the case by the bus bar protection device according to any one of the embodiments of the first aspect of the present utility model.

According to an embodiment of the foregoing second aspect of the present utility model, the controller is an all-in-one controller, the all-in-one controller includes a motor control unit, the bus bar includes a first connection end and a second connection end, the connection portion is connected between the first connection end and the second connection end, the connection portion is disposed in the channel, the first connection end protrudes through the first through hole and is connected to the motor control unit, and the second connection end protrudes outside the case through the second through hole.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a bus bar protection device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of another view of the bus bar protection device shown in FIG. 1;

fig. 3 is an enlarged schematic view of the portion a in fig. 2.

Reference numerals illustrate:

100. a bus bar guard;

1. a channel; 11. a first through hole; 12. a second through hole; 13. a mounting groove; 14. a first connection groove; 15. a second connecting groove; 16. a connection hole; 161. a first connection hole; 162. a second connection hole;

2. a spacer; 21. a receiving groove;

3. a limiting piece; 31. a fixed end; 32. a clamping end; 321. a guide surface; 33. an elastic connecting rod;

x, a first direction; y, second direction.

Detailed Description

Features and exemplary embodiments of various aspects of the utility model are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present utility model; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the embodiment of the present utility model. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a bus bar protection device according to an embodiment of the utility model. The first aspect of the present utility model provides a bus bar protection device 100, the bus bar protection device 100 is used for assembling a bus bar and protecting the bus bar from damage, the bus bar comprises a plurality of connecting parts separated from each other, the bus bar protection device 100 comprises a plurality of channels 1, the plurality of channels 1 are arranged at intervals, and each channel 1 is used for accommodating each connecting part; each channel 1 comprises a first through hole 11 and a second through hole 12, and the first through hole 11 and the second through hole 12 are respectively arranged at two ends of the channel 1.

In the embodiment provided in the present utility model, each channel 1 is configured to receive each connection portion, and each channel 1 includes a first through hole 11 and a second through hole 12, and at least a portion of the connection portion is disposed in the channel 1 during use of the busbar protective device 100. Alternatively, the thickness of the channel 1 may be adapted to the thickness of the connection portion, so that the channel 1 may better accommodate the connection portion. The plurality of channels 1 are arranged at intervals to prevent the mutual conduction between the plurality of connecting parts. The first through hole 11 and the second through hole 12 are separately provided at both ends of the channel 1, and at least one of the plurality of connection parts may be connected with a corresponding power unit (e.g., a driving motor and a motor controller) through the first through hole 11 and the second through hole 12, respectively. The bus bar protection device 100 can integrate and arrange a plurality of connection parts of the bus bar, and can fix the plurality of connection parts together (for example, the plurality of connection parts can be fixedly connected to the battery pack together), so that the connection difficulty can be effectively reduced, the connection is tidier and more attractive, and more assembly space can be released.

The bus bar protection device 100 may include three channels 1 arranged at intervals for integrating u\v\w three-phase high voltage bus bars. Alternatively, the bus bar protection device 100 may be made of an insulating material, so that the insulation voltage resistance and safety performance of the bus bar protection device 100 can be improved.

Referring to fig. 1 to 3 in combination, fig. 2 is a schematic structural diagram of another view of a bus bar protection device provided in fig. 1, and fig. 3 is an enlarged schematic diagram of a portion a in fig. 2. In some alternative embodiments, the busbar protecting device 100 further includes a spacer 2 and a plurality of stoppers 3, the spacer 2 is disposed around the channel 1 and includes a receiving groove 21 recessed in a direction away from the channel 1, one end of the stopper 3 is a fixed end 31 and the other end of the stopper 3 is a clamping end 32, at least a portion of the fixed end 31 is received in the receiving groove 21 to avoid the stopper 3 occupying a busbar installation space on the channel 1, and the clamping end 32 extends from the receiving groove 21 to the channel 1, thereby facilitating a limited fixing of the busbar assembled in place.

In these alternative embodiments, the spacers 2 are arranged around the channels 1, the spacers 2 being used to separate and enclose the three channels 1, the spacers 2 may separate the connections provided in each channel 1, thereby improving the security of each connection. The spacer 2 includes the holding tank 21 that is concave along keeping away from channel 1 direction, and at least a portion of stiff end 31 holds in holding tank 21 and with spacer 2 fixed connection, and stiff end 31 can extend along channel 1's width direction, and the quantity of locating part 3 can be a plurality of, and a plurality of locating parts 3 set up along channel 1's length direction interval to carry out spacingly to the connecting portion along channel 1's width direction, thereby improve the spacing effect to the connecting portion. The holding groove 21 is concave along the channel 1 direction, and holding groove 21 and channel 1 intercommunication, and in holding groove 21 was located to locating part 3, under the condition that the width of connecting portion and the width of channel 1 mutually fit, the space that the locating part 3 can not occupy channel 1 can also carry out spacingly to the connecting portion.

In some alternative embodiments, the clamping end 32 includes a guiding surface 321, the guiding surface 321 faces the channel 1, and the guiding surface 321 forms an acute angle with the direction from the clamping end 32 to the fixed end 31.

In these alternative embodiments, when the connecting portion is removed, the guide surface 321 may be pushed to move the guide surface 321 in a direction approaching the spacer 2 connected to the stopper 3, thereby releasing the stopper of the connecting portion by the clip end 32.

In some alternative embodiments, the limiting member 3 further includes an elastic connection rod 33 connected between the fixed end 31 and the clamping end 32, and the elastic connection rod 33 is spaced from the spacer 2.

In these alternative embodiments, the elastic connection rod 33 is spaced apart from the spacer 2, and the receiving groove 21 provides a deformation space for the elastic connection rod 33. When the connecting portion of the bus bar is installed in the channel 1, the bottom of the connecting portion presses the clamping end 32 of the limiting piece 3 and presses the elastic connecting rod 33 to deform and bend toward the accommodating groove 21, so that the clamping end 32 can be retracted backward to allow the connecting portion of the bus bar to be installed in place under the guide of the guide surface 321 of the clamping end 32, after the connecting portion is installed in the channel 1, since the connecting portion does not press the clamping end 32 of the limiting piece 3 any more, the elastic pressure of the elastic connecting rod 33 is released, and the lower surface of the clamping end 32 and the side surface of the elastic connecting rod 33 can both be in contact with the connecting portion of the bus bar, at this time, the limiting piece 3 can realize limiting and fixing of the bus bar, and the bus bar is prevented from falling off from the channel 1.

In some alternative embodiments, the channel 1 is provided with a mounting groove 13, the mounting groove 13 being recessed from the surface of the channel 1 and communicating with the receiving groove 21 in order to mount the fixed end 31 of the stop 3.

In some alternative embodiments, the channel 1 comprises a first connection groove 14 and a second connection groove 15 in communication, the first connection groove 14 extending in a first direction X and the second connection groove 15 extending in a second direction Y, the first direction X intersecting the second direction Y.

In these alternative embodiments, the channel 1 includes a first connecting groove 14 and a second connecting groove 15 that are in communication, the first connecting groove 14 extending along the first direction X, the first through hole 11 may be provided on a side of the first connecting groove 14 away from the second connecting groove 15, the second connecting groove 15 extending along the second direction Y, and the second through hole 12 may be provided on a side of the second connecting groove 15 away from the first connecting groove 14.

Alternatively, the first direction X and the second direction Y may be perpendicular to each other, so that the first connection groove 14 and the second connection groove 15 may be combined to form an "L" shape, so that the arrangement of the channels 1 may be neat, and the structure is compact.

In some alternative embodiments, the plurality of first connecting grooves 14 are arranged in parallel along the second direction Y, and the plurality of second connecting grooves 15 are arranged in parallel along the first direction X, so that part of the connecting portions are arranged in parallel along the second direction Y, and part of the connecting portions are arranged in parallel along the first direction X, which can improve the stability of the connection of the connecting portions with other members.

Optionally, the lengths of the plurality of first connecting grooves 14 extending along the first direction X are increased or decreased; and/or the lengths of the plurality of second connection grooves 15 extending in the second direction Y are increased or decreased. In this way, the channel 1 can be better fitted with different lengths of bus bars.

Alternatively, the plurality of first through holes 11 may be juxtaposed in the second direction Y. The connecting lines of the second through holes 12 may form acute angles with the first direction X and the second direction Y.

In some alternative embodiments, the busbar protective device 100 further includes a plurality of connection holes 16, and the connection holes 16 are spaced apart from the channel 1.

In these alternative embodiments, the bus bar guard 100 may be fixedly coupled through the coupling hole 16, for example, threaded with the battery case.

Alternatively, the number of the channels 1 is three, and at least one connecting hole 16 is spaced apart from two adjacent channels 1 in the second direction Y and spaced apart from the other channel in the first direction X, so that the connecting holes 16 can be better integrated on the busbar protecting device 100 and reduce the overall size of the busbar protecting device 100.

Optionally, the connection hole 16 includes a first connection hole 161 and a second connection hole 162 that are separately disposed on two sides of the at least two channels 1 in the second direction Y, and the connection line of the first connection hole 161 and the second connection hole 162 and the included angles between the first direction X and the second direction Y are acute angles, so that the connection strength between the busbar protection device 100 and the battery case can be improved. The first and second connection holes 161 and 162 may include two or more screw holes, respectively.

The second directional embodiment of the present utility model further provides a battery pack, the battery pack including a case for accommodating the battery cell, the controller, and the bus bar, the bus bar being mounted in the case by the bus bar protection device according to any one of the first directional embodiment of the present utility model.

In some alternative embodiments, the controller is an all-in-one controller, the all-in-one controller includes a motor control unit, the busbar includes a first connection end and a second connection end, the connection portion is connected between the first connection end and the second connection end, the connection portion is disposed in the channel, the first connection end protrudes through the first through hole and is connected to the motor control unit, and the second connection end protrudes out of the case through the second through hole.

In these alternative embodiments, after the bus bar is mounted on the bus bar guard, the bus bar guard may be vertically fixedly connected to the case of the battery pack by fastening bolts or the like, so that the bus bar and the bus bar guard are prevented from occupying too much space in the case, and more assembly space inside the case may be effectively released.

The battery pack may be applied to a vehicle, in which case the battery pack further includes a motor controller provided inside a housing of the battery pack, a first connection end of the bus bar is connected with the motor controller, and a second connection end of the bus bar extends out of the housing and is connected with the driving motor.

The busbar can be three-phase output copper bars, and the quantity of the channel can be three, and three channels are used for separating three-phase output copper bars and mutually insulating the three-phase output copper bars.

The busbar protection device can be connected with the shell of the battery pack after integrating the busbar, so that the connection difficulty is reduced, the connection is tidier and more attractive, and more assembly space can be released.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that in embodiments of the present utility model, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

The present utility model is not limited to the above embodiments, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the present utility model, and these modifications and substitutions are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A bus bar protection device, the bus bar including a plurality of connection parts separated from each other, comprising:

the plurality of channels are arranged at intervals and are respectively used for accommodating the connecting parts;

2. The bus bar protection device of claim 1, further comprising a spacer and a plurality of stop members,

the spacer is disposed around the channel and includes a receiving slot recessed in a direction away from the channel,

one end of the limiting piece is a fixed end, the other end of the limiting piece is a clamping end, at least one part of the fixed end is accommodated in the accommodating groove, and the clamping end extends out of the accommodating groove to the groove channel.

3. The busbar protective device as set forth in claim 2, wherein the clamping end includes a guide surface that faces the channel, the guide surface forming an acute angle with a direction along the clamping end to the fixed end.

4. The busbar protective device as set forth in claim 3, wherein the stopper further includes an elastic connection rod connected between the fixed end and the clip end, the elastic connection rod being disposed at a distance from the spacer.

5. The busbar protective device as set forth in claim 4, wherein the channel is provided with a mounting groove recessed from a surface of the channel and communicating with the receiving groove for mounting the fixed end of the stopper.

6. The busbar protective device of claim 1, wherein the channel includes a first connecting slot and a second connecting slot in communication, the first connecting slot extending in a first direction and the second connecting slot extending in a second direction, the first direction intersecting the second direction.

7. The busbar protective device as set forth in claim 6, wherein a plurality of the first connection grooves are juxtaposed in the second direction, and a plurality of the first connection grooves are juxtaposed in the first direction.

8. The busbar protective device of claim 7, further comprising a plurality of connection holes spaced from the channel.

9. A battery pack comprising a housing for housing a battery cell, a controller and a buss bar mounted in the housing by a buss bar protection device according to any one of claims 1-8.

10. The battery pack of claim 9, wherein the controller is an all-in-one controller comprising a motor control unit,

the busbar comprises a first connecting end and a second connecting end, the connecting portion is connected between the first connecting end and the second connecting end, the connecting portion is arranged in the channel, the first connecting end extends out of the first through hole and is connected to the motor control unit, and the second connecting end extends out of the box body through the second through hole.