CN216698632U

CN216698632U - Supporting mechanism, bus bar assembly and battery module

Info

Publication number: CN216698632U
Application number: CN202123389408.7U
Authority: CN
Inventors: 曲凡多
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-07
Anticipated expiration: 2031-12-29

Abstract

The utility model belongs to the technical field of the power battery technique and specifically relates to a supporting mechanism, busbar subassembly and battery module are related to, and supporting mechanism, this supporting mechanism are used for the fixed unit that converges, and this supporting mechanism includes supporting part and water-cooling portion, and the supporting part is used for setting up above-mentioned unit that converges. The water cooling part is attached to the supporting part, and a channel for cooling fluid to flow through is formed in the water cooling part. According to the support mechanism, the bus bar assembly and the battery module, on one hand, the bus unit is supported through the plate structure of the support mechanism, and the arrangement stability of the bus unit is effectively improved; on the other hand, the channel may be connected to a water cooling circulation system of the battery module described below to form a bus bar cooling circulation of a cooling fluid described below to improve heat dissipation of the bus bar described below.

Description

Supporting mechanism, bus bar assembly and battery module

Technical Field

The application relates to the technical field of power batteries, in particular to a supporting mechanism, a busbar assembly and a battery module.

Background

At present, a bus bar of a battery module is often supported and fixed through a bus bar support, the bus bar is not stably connected with the bus bar support, the bus bar support is easily deformed due to the deformation of a battery cell, and the bus bar support and the battery cell are easily shaken relatively. In addition, the busbar communicates with electric core, and the busbar generates heat seriously, and the heat dissipation between busbar and the busbar support is bad, and the busbar lasts and is in high temperature state work, greatly influences the performance of battery module.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a supporting mechanism, busbar subassembly and battery module to solve to a certain extent that both bearing structure of busbar and busbar support are unstable, the bad technical problem of heat dissipation between busbar and the busbar support among the prior art.

According to a first aspect of the present application, there is provided a support mechanism for fixing a bus bar unit, the support mechanism including:

a support portion for disposing the bus bar unit;

and the water cooling part is connected with the supporting part and is provided with a channel for cooling fluid to flow through.

Preferably, the water cooling part is attached to the supporting part;

the supporting part is provided with an extending direction and comprises a boss extending along the extending direction, and the water cooling part is arranged in the boss;

the supporting mechanism is made of heat-conducting insulating plastic or metal materials with surfaces subjected to insulating treatment.

Preferably, the support portion further comprises a first flat edge and a second flat edge extending along the extending direction, and the first flat edge and the second flat edge are respectively arranged on two sides of the boss side by side;

the supporting mechanism further comprises a heat-conducting structural adhesive layer, and the heat-conducting structural adhesive layer is arranged on the first flat edge and the second flat edge.

According to a second aspect of the present application, there is provided a busbar assembly including the support mechanism of any one of the above aspects. The supporting mechanism has all the beneficial technical effects, and the details are not repeated herein.

Preferably, the busbar assembly further comprises:

the collecting part extends along the extending direction and is arranged on the boss;

the collecting unit is sheet-shaped, a notch extending in the direction perpendicular to the extending direction is formed in the collecting unit, the first end of the collecting unit is opened through the notch, and the second end of the collecting unit is connected with the collecting part.

Preferably, the busbar assembly further comprises a pole cover plate, and one side of the support mechanism, which is far away from the boss, is attached to the pole cover plate;

the said converging unit also includes a bending part,

the bent part is arranged between the first end and the second end, and the notch is stopped at the bent part;

the bending part divides the confluence unit into a high-order part and a low-order part, when the confluence unit is arranged on the supporting mechanism, the high-order part is attached to the first flat edge or the second flat edge, and the low-order part is attached to the pole cover plate.

Preferably, the number of the confluence units is plural, and the plurality of the confluence units are alternately arranged on both sides of the collecting part along the extending direction.

Preferably, the busbar assembly further comprises a connecting portion via which the busbar unit is connected with the collecting portion;

the connection portion is formed of a conductive material.

Preferably, the collecting part comprises a temperature sensing unit and a voltage sensing unit, the temperature sensing unit is used for collecting the temperature data of any one of the confluence units, and the voltage sensing unit is used for collecting the voltage data of any one of the confluence units;

the bus bar assembly further comprises a rectifying/feedback unit which is in communication connection with the temperature sensing unit and the voltage sensing unit respectively.

According to a third aspect of the present application, a battery module is provided, which includes the supporting mechanism according to any one of the above technical aspects or includes the bus bar assembly according to any one of the above technical aspects, and therefore, all the beneficial technical effects of the supporting mechanism and the bus bar assembly are achieved, and are not repeated herein.

Compared with the prior art, the beneficial effect of this application is:

according to the support mechanism, on one hand, the confluence unit is supported through the support mechanism, and the setting stability of the confluence unit is improved; on the other hand, the water cooling part provides a flowing channel for cooling fluid, and the problem of poor heat dissipation of the bus bar is effectively solved.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a support mechanism according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a busbar assembly according to an embodiment of the present disclosure;

FIG. 3 is an enlarged schematic view of the busbar assembly of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a bus bar assembly according to an embodiment of the present disclosure.

Reference numerals:

1-a support mechanism; 11-a boss; 12-a first flat edge; 13-second flat edge; 14-a thermally conductive structural adhesive layer; 2-a busbar unit; 21-bending part; 22-high order section; 23 a-a first, lower step; 23 b-a second, lower step; 24-a gap; 3-collecting the strips; 4-connecting piece.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.

The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The support mechanism 1, the bus bar assembly, and the battery module according to some embodiments of the present application are described below with reference to fig. 1 to 4.

Referring to fig. 1 to 4, a first aspect of the embodiments of the present application provides a support mechanism 1, the support mechanism 1 is used for fixing a confluence unit 2, the support mechanism 1 comprises a support part and a water cooling part, and the support part is used for arranging the confluence unit 2. The water cooling part is connected with the supporting part, and a channel for cooling fluid to flow is formed in the water cooling part, so that on one hand, the confluence unit 2 is supported through the plate structure of the supporting mechanism 1, and the setting stability of the confluence unit 2 is effectively improved; on the other hand, the channel may be connected to a water cooling circulation system of the battery module described below to form a bus bar cooling circulation of a cooling fluid described below to improve heat dissipation of the bus bar described below.

Preferably, as shown in fig. 1, the water cooling portion is attached to the support portion, the support portion has an extending direction, the support portion may include a boss 11 extending along the extending direction, and the water cooling portion is disposed in the boss 11, so that the boss 11 effectively increases the space of the above-mentioned channel to improve the cooling and heat dissipation effect, and increases the contact area between the below-mentioned confluence unit 2 and the support mechanism 1 to improve the stability of the confluence unit 2.

Further, as shown in fig. 1, the support portion may further include a first flat edge 12 and a second flat edge 13 extending along the extending direction, and the first flat edge 12 and the second flat edge 13 are respectively disposed on two sides of the boss 11 side by side, so as to further increase a contact area between the bus bar unit 2 and the support mechanism 1, so as to improve stability of the bus bar unit 2.

Preferably, as shown in fig. 1, the supporting mechanism 1 may further include a heat conducting structure adhesive layer 14, the heat conducting structure adhesive is disposed on the first flat edge 12 and the second flat edge 13, in other words, the heat conducting structure adhesive layer 14 is formed as a heat conducting structure adhesive, and is coated on the first flat edge 12 and the second flat edge 13 for adhering the bus bar unit 2, so as to ensure that the bus bar unit 2 can be stably fixed to the supporting mechanism 1 while not affecting the heat dissipation of the bus bar unit 2.

Preferably, the support mechanism 1 is formed of a thermally conductive and insulating plastic or a metal material having an insulating-treated surface (for example, aluminum, copper, silver, etc. having an insulating-treated surface).

Referring to fig. 2 to 4, a second aspect of the present embodiment provides a bus bar assembly including the support mechanism 1, the collection bar 3, and the bus unit 2 according to any one of the above embodiments.

Specifically, as shown in fig. 2 and 3, the collecting bar 3 is connected to the bus bar unit 2. The collecting strip 3 extends along the extending direction and is arranged on the boss 11. Optionally, the collection strip 3 may be bonded to the boss 11 to ensure that the collection strip 3 and the boss 11 can be stably connected.

Preferably, as shown in fig. 4, the bus bar assembly may further include a pole cover plate, and one side of the support mechanism 1 facing away from the boss 11 is attached to the pole cover plate, so that the channel inside the support mechanism 1 may cool the bus bar described below, and may also cool the pole cover plate. Preferably, as shown in fig. 4, the edges of the two sides of the support mechanism 1 are respectively formed with a certain distance from the edge of the post cover plate on the corresponding side, and due to the thickness of the first flat edge 12 and the second flat edge 13, the portions of the post cover plate on the two sides of the support mechanism 1 are respectively formed with a receiving space, which can be used for receiving a first low-step portion 23a and a second low-step portion 23b, which will be described in detail below, and the structures of the first low-step portion 23a and the second low-step portion 23b and how the receiving space is received, so as to further increase the contact area between the busbar unit and both the support mechanism 1 and the post cover plate, so as to increase the setting stability of the busbar unit 2, and the support mechanism 1 and the post cover plate are arranged in a fitting manner, thereby effectively reducing the probability of deformation of the busbar unit 2 due to the influence of post deformation.

In an embodiment, the bus bar unit 2 may be sheet-shaped. Preferably, as shown in fig. 3, the bus bar unit 2 has a square sheet shape. The busbar unit 2 is formed with a slit 24 extending in a direction perpendicular to the extending direction, the slit 24 opening a first end of the busbar unit 2. So, this opening 24 will converge unit 2 and divide into first part and second part, so under battery electric core and the state of converging unit 2 and being connected, anodal electric core can be connected with first among first part and the second part, negative pole electric core can be connected with the second among first part and the second part, at this moment, the electric current of flowing through anodal electric core and negative pole electric core need be walked around opening 24 and circulate, so prolonged the route of the electric current of flowing through anodal electric core and negative pole electric core effectively, make this route more be close to the water-cooling part, further improve the cooling heat dispersion of busbar.

Preferably, as shown in fig. 3, the bus bar unit 2 may further include a bending portion 21, the bending portion 21 divides the bus bar unit 2 into a high-order portion 22 and a low-order portion, the bending portion 21 is located between the first end and the second end, the notch 24 is cut off from the bending portion 21, and the second end of the bus bar unit 2 is connected to the collecting portion. Thus, the first portion is formed as the first low-step portion 23a, and the second portion is formed as the second low-step portion 23 b. The first flat edge 12 and the second flat edge 13 both have a certain thickness, when the confluence unit 2 is arranged on the support mechanism 1, the high-order portion 22 is attached to the first flat edge 12 or the second flat edge 13, and the low-order portion is attached to the pole cover plate, so that the confluence unit 2 can better adapt to the support mechanism 1 and the pole cover plate structure, the confluence unit 2 is closely attached to the pole cover plate, and the probability of deformation of the confluence unit 2 due to the influence of pole deformation is further reduced. In addition, the bending part 21 forms a pre-deformation on the bus bar unit 2, and the difficulty of adjusting the bending deformation of the bus bar unit 2 in the assembling process of the bus bar unit 2 is effectively reduced.

Preferably, as shown in fig. 2 and 4, the number of the bus bar units 2 is multiple, and the multiple bus bar units 2 are alternately arranged on two sides of the collecting part along the extending direction, so that the integration of the bus bars is facilitated, and the space of the bus bars is effectively saved. The bus bar is formed of a plurality of bus units 2, a connecting sheet 4 described below, and a collecting unit to collect a plurality of battery cells.

In addition, as shown in fig. 3, the busbar assembly further includes a connecting piece 4, and the busbar unit 2 is connected with the collecting bar 3 via the connecting piece 4, so as to realize the communication connection between the busbar unit 2 and the collecting bar 3. Preferably, the connection pad 4 is formed of a conductive material (e.g., a nickel pad, a copper pad, an aluminum pad, etc.).

In an embodiment, the collecting bar 3 includes a temperature sensing unit and a voltage sensing unit, the temperature sensing unit is used for collecting temperature data of any one of the bus units 2, the voltage sensing unit is used for collecting voltage data of any one of the bus units 2 to monitor voltage and temperature of each of the bus units 2, the temperature sensing unit and the voltage sensing unit can be in communication connection with a battery pack management system of the following battery module, and are used for transmitting the temperature data and the voltage data to the battery pack management system.

Preferably, the bus bar assembly further includes a rectifying/feeding unit (also called AFE, Active Front End) respectively connected to the temperature sensing unit and the voltage sensing unit, and the temperature sensing unit and the voltage sensing unit may be connected to the battery pack management system through the rectifying/feeding unit, so that data collected by the bus bar is collected by the rectifying/feeding unit and then transmitted, thereby simplifying a circuit between the bus bar and the battery pack management system.

A third aspect of the embodiments of the present application further provides a battery module, which includes the supporting mechanism 1 or the bus bar assembly described in any of the embodiments, so that all the beneficial technical effects of the supporting mechanism 1 and the bus bar are achieved, and details are not repeated herein.

Preferably, the battery module may further include a water cooling circulation system and a battery pack management system.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A support mechanism (1), characterized in that the support mechanism (1) is used for fixing a busbar unit (2), the support mechanism (1) comprising:

a support for arranging the bus bar unit (2);

2. Support mechanism (1) according to claim 1,

the water cooling part is attached to the supporting part;

the supporting part is provided with an extending direction and comprises a boss (11) extending along the extending direction, and the water cooling part is arranged in the boss (11);

the supporting mechanism (1) is made of heat-conducting insulating plastic or metal materials with surfaces subjected to insulating treatment.

3. Support mechanism (1) according to claim 2,

the supporting part further comprises a first flat edge (12) and a second flat edge (13) which extend along the extending direction, and the first flat edge (12) and the second flat edge (13) are respectively arranged on two sides of the boss (11) side by side;

the supporting mechanism (1) further comprises a heat-conducting structural adhesive layer (14), and the heat-conducting structural adhesive layer (14) is arranged on the first flat edge (12) and the second flat edge (13).

4. A busbar assembly comprising the support mechanism of claim 3.

5. The buss bar assembly of claim 4, further comprising:

the collecting part extends along the extending direction and is arranged on the boss (11);

the bus unit (2) is sheet-shaped, a gap (24) extending in a direction perpendicular to the extending direction is formed in the bus unit (2), the gap (24) enables a first end of the bus unit (2) to be opened, and a second end of the bus unit (2) is connected with the collecting part.

6. The busbar assembly according to claim 5,

the busbar assembly further comprises a pole cover plate, and one side of the supporting mechanism (1) departing from the boss (11) is attached to the pole cover plate;

the confluence unit (2) further comprises a bending part (21),

the bent part (21) is arranged between the first end and the second end, and the notch (24) is cut off from the bent part (21);

the bending part (21) divides the confluence unit (2) into a high-order part (22) and a low-order part, when the confluence unit (2) is arranged on the supporting mechanism (1), the high-order part (22) is attached to the first flat edge (12) or the second flat edge (13), and the low-order part is attached to the pole cover plate.

7. The busbar assembly according to any one of claims 5 to 6, wherein the number of the busbar units (2) is plural, and the plurality of the busbar units (2) are alternately arranged on both sides of the collecting portion along the extending direction.

8. The buss bar assembly of claim 7,

the busbar assembly further comprises a connecting portion via which the busbar unit (2) is connected with the collecting portion;

the connection portion is formed of a conductive material.

9. The buss bar assembly of claim 7,

the collecting part comprises a temperature sensing unit and a voltage sensing unit, the temperature sensing unit is used for collecting the temperature data of any one of the confluence units (2), and the voltage sensing unit is used for collecting the voltage data of any one of the confluence units (2);

10. A battery module, characterized by comprising the support mechanism (1) of claims 1 to 3 or comprising the busbar assembly of claims 4 to 9.