Busbar assembly

Abstract

The utility model provides a busbar assembly comprising a heat radiation assembly, and the heat radiation assembly comprises a liquid cooling plate, a heat conduction seat, heat radiation fins, a first heat conduction plate, a second heat conduction plate, a heat conduction column, a spring, a heat conduction sleeve, a contact plate and a connection groove. And the connecting grooves are formed in the lower surface of the liquid cooling plate at equal intervals. The contact plate is aligned with the connecting terminal, the liquid cooling plate is pressed downwards, the spring is compressed after being stressed, the liquid cooling plate drives the first heat conducting plate to move downwards, after the first heat conducting plate is attached to a conductor, the position of the liquid cooling plate is limited by using the limiting lug plate, at the moment, the contact plate is tightly attached to the connecting terminal under the acting force of the spring, and the contact plate is tightly attached to the connecting terminal. And when the battery works, heat in the connecting terminal can be transferred through the contact plate, the heat conduction sleeve, the heat conduction column and the second heat conduction plate, and then the heat is taken away through the liquid cooling plate, so that heat dissipation of the connecting terminal is realized, the situation of local overheating is avoided, and stable operation of the battery is ensured.

Description

Technical Field

[0001] The utility model relates to a component, in particular to a busbar component, belonging to the technical field of battery busbars. Background Art

[0002] In the field of new energy technology, such as new energy vehicles, battery packs usually use a busbar structure to connect battery modules. The busbar structure has a high level of technology, high versatility, simple preparation process, and high reliability, so it can be widely used. In the battery pack, the busbar plays the role of current collection and distribution. It can collect the current in the battery pack together and output it to external devices through connecting lines.

[0003] At present, the bus structure generally adopts natural cooling to dissipate heat, but the thermal management effect is poor. Under certain special working conditions, the battery cell is charged with a large current, which will cause the temperature rise of the bus to be high. Therefore, in the prior art, some heat conduction and heat dissipation mechanisms are used to achieve the heat dissipation of the bus.

[0004] For example, the technology disclosed in CN202223060424.6 "A bus assembly and battery pack" provides a heat pipe with a heat conduction function to conduct the heat in the bus into the liquid cooling plate, thereby achieving heat dissipation of the bus. However, this method of heat conduction through a heat pipe still has the following technical problems during the heat conduction process:

[0005] The bus is connected to the positive and negative poles of the battery through connecting terminals, usually by welding. During use, this is the main heat point, and in special working conditions, it will cause local overheating, affecting the safe use of the battery.

[0006] To this end, a busbar assembly is proposed. Utility Model Content

[0007] In view of this, the utility model provides a busbar assembly to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0008] The technical solution of the embodiment of the utility model is implemented as follows: a busbar assembly includes a heat dissipation assembly, the heat dissipation assembly includes a liquid cooling plate, a heat conducting seat, heat dissipation fins, a first heat conducting plate, a second heat conducting plate, a heat conducting column, a spring, a heat conducting sleeve, a contact plate and a connecting groove;

[0009] The connecting grooves are equidistantly arranged on the lower surface of the liquid cooling plate, the lower surface of the heat-conducting seat is fixedly connected to the upper surface of the first heat-conducting plate, the heat dissipating fins are equidistantly fixedly connected to both sides of the heat-conducting seat, the top end of the heat-conducting column is fixedly connected to the lower surface of the second heat-conducting plate, the bottom end of the heat-conducting sleeve is fixedly connected to the upper surface of the contact plate, and the spring is sleeved on the outside of the heat-conducting sleeve and the heat-conducting column.

[0010] Further preferably, the bottom end of the heat-conducting column is located inside the heat-conducting sleeve, and the outer side wall of the heat-conducting column is slidably connected to the inner side wall of the heat-conducting sleeve.

[0011] Further preferably, the top end of the spring is fixedly connected to the lower surface of the second heat conducting plate, and the bottom end of the spring is fixedly connected to the upper surface of the contact plate.

[0012] Further preferably, the second heat conducting plate is embedded in the interior of the connecting groove, and the upper surface of the heat conducting seat is fixedly connected to the lower surface of the liquid cooling plate.

[0013] Further preferably, a main body component is installed on the lower surface of the first heat conducting plate, and the main body component includes a conductor, a connecting terminal, two limiting ear plates, an elastic sheet and a through groove;

[0014] The lower surface of the first heat conducting plate is attached to the upper surface of the conductor, and the through grooves are equidistantly arranged inside the conductor.

[0015] Further preferably, the connecting terminal is fixedly connected to the inside of the through slot via the elastic sheet.

[0016] Further preferably, the two limiting ear plates are symmetrically fixedly connected to two sides of the conductor, and the conductor is fixedly connected to the liquid cooling plate through the two limiting ear plates.

[0017] Further preferably, the contact plate is located inside the through groove, and the lower surface of the contact plate is attached to the upper surface of the connecting terminal.

[0018] Since the embodiment of the utility model adopts the above technical scheme, it has the following advantages: the utility model aligns the contact plate with the connecting terminal and presses the liquid cooling plate downward, and the spring is compressed after being subjected to force, and at the same time, the liquid cooling plate drives the first heat conducting plate to move downward. When the first heat conducting plate is in contact with the conductor, the position of the liquid cooling plate is limited by a limiting ear plate. At this time, under the action of the spring, the contact plate is tightly fitted with the connecting terminal, and then when the battery is working, the heat in the connecting terminal can be transferred through the contact plate, the heat conducting sleeve, the heat conducting column and the second heat conducting plate, and then the heat is taken away by the liquid cooling plate, thereby realizing the heat dissipation of the connecting terminal, avoiding local overheating, and ensuring the stable operation of the battery.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a structural diagram of the heat dissipation component of the utility model;

[0023] Figure 3 This is a structural diagram of the first heat conducting plate of the utility model;

[0024] Figure 4 This is a schematic diagram of the connection between the heat-conducting column and the heat-conducting sleeve of the utility model;

[0025] Figure 5 This is a structural diagram of the main components of the utility model.

[0026] Figure numerals: 101, heat dissipation assembly; 11, liquid cooling plate; 12, heat-conducting seat; 13, heat dissipation fins; 14, first heat-conducting plate; 15, second heat-conducting plate; 16, heat-conducting column; 17, spring; 18, heat-conducting sleeve; 19, contact plate; 20, connecting groove; 301, main body assembly; 31, conductor; 32, connecting terminal; 33, limiting ear plate; 34, elastic sheet; 35, through groove. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] like Figure 1As shown in FIG. 5 , the embodiment of the utility model provides a busbar assembly, including a heat dissipation assembly 101, the heat dissipation assembly 101 includes a liquid cooling plate 11, a heat conducting seat 12, heat dissipation fins 13, a first heat conducting plate 14, a second heat conducting plate 15, a heat conducting column 16, a spring 17, a heat conducting sleeve 18, a contact plate 19 and a connecting groove 20;

[0030] The connecting grooves 20 are equidistantly opened on the lower surface of the liquid cooling plate 11, the lower surface of the heat-conducting seat 12 is fixedly connected to the upper surface of the first heat-conducting plate 14, the heat dissipating fins 13 are equidistantly fixedly connected to both sides of the heat-conducting seat 12, the top end of the heat-conducting column 16 is fixedly connected to the lower surface of the second heat-conducting plate 15, the bottom end of the heat-conducting sleeve 18 is fixedly connected to the upper surface of the contact plate 19, and the spring 17 is sleeved on the outside of the heat-conducting sleeve 18 and the heat-conducting column 16.

[0031] In one embodiment, the bottom end of the heat-conducting column 16 is located inside the heat-conducting sleeve 18, the outer side wall of the heat-conducting column 16 is slidably connected to the inner side wall of the heat-conducting sleeve 18, the top end of the spring 17 is fixedly connected to the lower surface of the second heat-conducting plate 15, and the bottom end of the spring 17 is fixedly connected to the upper surface of the contact plate 19. The contact plate 19 is pushed by the spring 17 so that the contact plate 19 can contact the bus.

[0032] In one embodiment, the second heat conducting plate 15 is embedded in the connecting groove 20, and the upper surface of the heat conducting seat 12 is fixedly connected to the lower surface of the liquid cooling plate 11. The heat in the bus can be transferred through the second heat conducting plate 15 and the heat conducting seat 12, and then the heat is taken away by the liquid cooling plate 11.

[0033] In one embodiment, a main body component 301 is installed on the lower surface of the first heat conducting plate 14, and the main body component 301 includes a conductor 31, a connecting terminal 32, two limiting ear plates 33, an elastic sheet 34 and a through slot 35;

[0034] The lower surface of the first heat conducting plate 14 is attached to the upper surface of the conductor 31, and the through grooves 35 are equidistantly arranged inside the conductor 31. The connecting terminal 32 is fixedly connected to the inside of the through groove 35 by an elastic sheet 34. By providing the elastic sheet 34, the connecting terminal 32 can be in close contact with the electrode of the battery cell to improve the conductive effect.

[0035] In one embodiment, two limiting ear plates 33 are symmetrically fixedly connected to both sides of the conductor 31, and the conductor 31 is fixedly connected to the liquid cooling plate 11 through the two limiting ear plates 33. The contact plate 19 is located inside the through groove 35, and the lower surface of the contact plate 19 is attached to the upper surface of the connecting terminal 32, so that the heat in the connecting terminal 32 can be transferred through the contact plate 19, and then the heat is taken away by the liquid cooling plate 11.

[0036] When the utility model is working: align the connecting terminal 32 with the electrode of the battery cell, then weld the electrode of the battery cell to the connecting terminal 32, align the contact plate 19 with the connecting terminal 32, press the liquid cooling plate 11 downward, after the contact plate 19 contacts the connecting terminal 32, the heat-conducting column 16 moves downward along the heat-conducting sleeve 18 after being subjected to pressure, and the spring 17 is compressed after being subjected to force, and at the same time, the liquid cooling plate 11 drives the first heat-conducting plate 14 to move downward through the heat-conducting seat 12, and when the first heat-conducting plate 14 is in contact with the conductor 31, the position of the liquid cooling plate 11 is limited by the limiting ear plate 33, and the limiting ear plate 33 is moved downward. 3 is welded to the conductor 31. At this time, under the action of the spring 17, the contact plate 19 is tightly fitted with the connecting terminal 32. Then, when the battery is working, the heat in the connecting terminal 32 can be transferred through the contact plate 19, the heat-conducting sleeve 18, the heat-conducting column 16 and the second heat-conducting plate 15, and then the heat is taken away by the liquid cooling plate 11, thereby realizing the heat dissipation of the connecting terminal 32, avoiding the local overheating, and ensuring the stable operation of the battery. In addition, through the cooperation of the first heat-conducting plate 14, the heat-conducting seat 12 and the liquid cooling plate 11, the main body of the conductor 31 can be cooled.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A busbar assembly, comprising a heat dissipation assembly (101), characterized in that: The heat dissipation assembly (101) comprises a liquid cooling plate (11), a heat conducting seat (12), heat dissipation fins (13), a first heat conducting plate (14), a second heat conducting plate (15), a heat conducting column (16), a spring (17), a heat conducting sleeve (18), a contact plate (19) and a connecting groove (20); The connecting grooves (20) are equidistantly arranged on the lower surface of the liquid cooling plate (11); the lower surface of the heat-conducting seat (12) is fixedly connected to the upper surface of the first heat-conducting plate (14); the heat-dissipating fins (13) are equidistantly fixedly connected to both sides of the heat-conducting seat (12); the top end of the heat-conducting column (16) is fixedly connected to the lower surface of the second heat-conducting plate (15); the bottom end of the heat-conducting sleeve (18) is fixedly connected to the upper surface of the contact plate (19); and the spring (17) is sleeved on the outside of the heat-conducting sleeve (18) and the heat-conducting column (16).

2. A busbar assembly according to claim 1, characterized in that: The bottom end of the heat-conducting column (16) is located inside the heat-conducting sleeve (18), and the outer wall of the heat-conducting column (16) is slidably connected to the inner wall of the heat-conducting sleeve (18).

3. A busbar assembly according to claim 1, characterized in that: The top end of the spring (17) is fixedly connected to the lower surface of the second heat conducting plate (15), and the bottom end of the spring (17) is fixedly connected to the upper surface of the contact plate (19).

4. A busbar assembly according to claim 3, characterized in that: The second heat conducting plate (15) is embedded in the interior of the connecting groove (20), and the upper surface of the heat conducting seat (12) is fixedly connected to the lower surface of the liquid cooling plate (11).

5. The busbar assembly according to claim 1, characterized in that: A main body component (301) is installed on the lower surface of the first heat conducting plate (14), wherein the main body component (301) comprises a conductor (31), a connecting terminal (32), two limiting ear plates (33), an elastic sheet (34) and a through groove (35); The lower surface of the first heat conducting plate (14) is in contact with the upper surface of the conductor (31), and the through grooves (35) are equidistantly arranged inside the conductor (31).

6. A busbar assembly according to claim 5, characterized in that: The connecting terminal (32) is fixedly connected to the interior of the through slot (35) via the elastic sheet (34).

7. The busbar assembly according to claim 5, characterized in that: The two limiting ear plates (33) are symmetrically fixedly connected to the two sides of the conductor (31), and the conductor (31) is fixedly connected to the liquid cooling plate (11) via the two limiting ear plates (33).

8. A busbar assembly according to claim 6, characterized in that: The contact plate (19) is located inside the through groove (35), and the lower surface of the contact plate (19) is attached to the upper surface of the connecting terminal (32).

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