CN220292395U

CN220292395U - Power management system shell structure and battery system

Info

Publication number: CN220292395U
Application number: CN202321377586.4U
Authority: CN
Inventors: 范心; 陈智伟; 邱文聪
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2024-01-02
Anticipated expiration: 2033-05-31

Abstract

The utility model relates to the field of batteries, in particular to a power management system shell structure, a power management system and a battery system, wherein the power management system shell structure comprises an upper cover and a bottom shell, a PCB (printed circuit board) is arranged between the upper cover and the bottom shell, a plurality of grooves are formed in the bottom shell and used for containing heat conduction structural adhesive, and the PCB is adhered to the bottom shell through the heat conduction structural adhesive. The PCB is adhered to the shell of the power management system, so that the weight of the power management system can be reduced compared with the case that the PCB is fixed to the shell by bolts; the colloid can timely radiate the heat of the PCB, so that the possibility that the PCB is damaged and cannot work normally due to the fact that the heat cannot be radiated timely is reduced; further, because the heat conduction structure glue has certain fluidity, the groove is arranged for containing glue body to limit the glue body, so that the possibility that other structures in the power management system shell are affected due to the fact that the glue body cannot be limited is reduced.

Description

Power management system shell structure and battery system

Technical Field

The utility model relates to the technical field of batteries, in particular to a shell structure of a power management system, the power management system and a battery system.

Background

The battery is used as a core structure for providing power for the electric automobile, and the safety of the battery has direct influence on the electric automobile. The battery state is monitored through the power management system, and the power management system is used as a tie between the battery and a user, so that the utilization rate of the battery can be improved, the battery is prevented from being overcharged and overdischarged, and the service life of the battery is prolonged.

The power management system casing, be used for depositing the shell of power management system promptly, in prior art, PCB board (printed circuit board, printed wiring board) adopts bolt fastening in battery management system casing inside, but adopts bolt fastening, and weight is heavier, does not accord with the trend of battery lightweight development, and secondly, the bolt does not possess the heat conduction function, is unfavorable for the heat dissipation of PCB board.

Disclosure of Invention

The utility model aims at: aiming at the problems that the prior art adopts bolts to fix a PCB board to cause the power management system to be heavier and not beneficial to heat dissipation, the shell structure of the power management system, the power management system and the battery system are provided.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a power management system shell structure, includes upper cover and drain pan, the upper cover with be provided with the PCB board between the drain pan, be provided with a plurality of recess in the drain pan, the recess is used for holding heat conduction structure and glues, the PCB board passes through heat conduction structure glues paste in the drain pan.

According to the utility model, the PCB is stuck to the shell of the power management system, so that the weight of the power management system can be reduced compared with the case that the PCB is fixed to the shell by bolts; because the heat-conducting structural adhesive is adopted, the heat of the PCB can be timely dissipated through the adhesive, and the possibility that the PCB is damaged and cannot work normally due to the fact that the heat cannot be dissipated in time is reduced; further, because the heat conduction structure glue has certain fluidity, the groove is arranged for containing glue body to limit the glue body, so that the possibility that other structures in the power management system shell are affected due to the fact that the glue body cannot be limited is reduced.

As a preferable scheme of the utility model, the height of the groove is more than or equal to 2mm, so that enough glue is ensured to be used for bonding the PCB.

As a preferable scheme of the utility model, the bonding area of the heat conduction structural adhesive and the PCB is more than or equal to eighty percent of the bottom area of the PCB. By limiting the bonding area, the bonding stability of the PCB can be further ensured.

As a preferable scheme of the utility model, the bottom shell is provided with a plurality of positioning columns, and the positioning columns penetrate through the PCB. Through setting up the reference column, can play fixed action to the PCB board, reduce the PCB board and produce the possibility of displacement along the cross section direction of reference column.

As a preferable scheme of the utility model, the bottom shell is provided with the supporting rib positions, the supporting rib positions are used for providing support for the edge of the PCB, and the distance between the adjacent supporting rib positions is smaller than or equal to 25mm.

As a preferable scheme of the utility model, the side surface of the bottom shell is connected with a fixing plate, the fixing plate is detachably connected with the battery pack, and the fixing plate is clamped with the upper cover. Through setting up the fixed plate in the drain pan side, compare in setting up the fixed plate in the drain pan bottom surface, can reduce the area of contact of fixed plate and battery package, and then power management system can vertically stand in electric core module side, reduces power management system and electric CCS subassembly distance, reaches the technological effect that reduces whole package system pencil quantity, improves the space utilization of battery package; the fixed plate is clamped with the upper cover, so that the connection stability of the upper cover and the bottom shell can be enhanced.

As a preferable scheme of the utility model, the bottom surface of the bottom shell is provided with a plurality of heat dissipation windows, and the heat dissipation windows are of hollow frame structures. By providing the heat dissipation window, heat dissipation can be further enhanced.

As a preferable scheme of the utility model, the upper cover is provided with a plurality of clamping rib positions, and the clamping rib positions are used for propping against the upper surface of the PCB. Because the heat-conducting glue has certain fluidity and needs to be solidified for a period of time, the clamping ribs can limit the PCB during the solidification of the heat-conducting glue, and the possibility of displacement of the PCB along the axis direction of the positioning column is reduced.

As a preferable mode of the utility model, the upper cover and the bottom shell are in snap connection. Compared with the bolt connection, the buckle connection is more convenient, and the materials are saved.

As a preferable scheme of the utility model, the periphery of the upper cover and/or the bottom shell is provided with a connector avoiding notch for connecting a connector

The utility model also discloses a battery system, which comprises the shell structure of the power management system.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. according to the utility model, the PCB is stuck to the shell of the power management system, so that the weight of the power management system can be reduced compared with the case that the PCB is fixed to the shell by bolts; because the heat-conducting structural adhesive is adopted, the heat of the PCB can be timely dissipated through the adhesive, and the possibility that the PCB is damaged and cannot work normally due to the fact that the heat cannot be dissipated in time is reduced; further, because the heat conduction structure glue has certain fluidity, the groove is arranged for containing glue body to limit the glue body, so that the possibility that other structures in the power management system shell are affected due to the fact that the glue body cannot be limited is reduced.

2. The upper cover and the bottom shell of the power management system shell are connected in a clamping mode, and compared with the bolt connection, the clamping connection is more convenient, and materials are saved.

3. Compared with the fixing plate arranged on the bottom surface of the bottom shell, the utility model can reduce the contact area between the fixing plate and the battery pack, further the power management system can be vertically arranged on the side surface of the battery cell module, the distance between the power management system and the electric CCS module is reduced, the technical effect of reducing the wire harness consumption of the whole pack system is achieved, and the space utilization rate of the battery pack is improved.

4. The utility model has simple structure and strong applicability.

Drawings

Fig. 1 is a schematic diagram of a power management system housing structure according to the present utility model.

Fig. 2 is a schematic view of the structure of the upper cover according to the present utility model.

Fig. 3 is a schematic structural view of the base of the present utility model.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a schematic view of the structure of the bottom surface of the base according to the present utility model.

Fig. 6 is a schematic view of the structure of the battery system according to the present utility model.

Fig. 7 is an enlarged view of a portion a in fig. 6.

Fig. 8 is a schematic diagram of a mounting structure of a PCB board according to the present utility model.

The marks in the figure: 1-a PCB board; 2-an upper cover; 21-positioning clamping grooves; 3-a bottom shell; 31-a heat dissipation window; 4-grooves; 41-element avoidance gap; 5-positioning columns; 6, supporting the rib position; 7-clamping the rib position; 8-fixing plates; 81-positioning pieces; 9-connector relief notch; 10-an electric core module; 11-a box body; 12-A-frame.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical power management system shell structure scheme and advantages of the present utility model more clear, the present utility model will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

The utility model discloses a shell structure of a power management system, which is shown in fig. 1-4 and 8, and comprises an upper cover 2 and a bottom shell 3, wherein a PCB (printed Circuit Board) 1 is positioned between the upper cover 2 and the bottom shell 3, a plurality of grooves 4 are formed in the bottom shell 3 and used for containing heat-conducting structural adhesive, and the PCB 1 is adhered to the bottom shell 3 through the heat-conducting structural adhesive, preferably, the heat-conducting structural adhesive can cover heating elements such as resistors and the like on the PCB 1, so that heat dissipation is facilitated. It will be appreciated that the shape of the groove 4 is not limited in the present utility model, and when the groove edge of the groove 4 collides with a component on the PCB board 1, the component avoiding notch 41 may be disposed on the groove edge of the groove 4 to avoid the component.

By attaching the PCB 1 to the bottom case 3, the weight of the power management system can be reduced as compared to fixing the PCB 1 to the bottom case 3 by bolts; because the heat-conducting structural adhesive is adopted, heat dissipation can be performed in time, and the possibility that the PCB is damaged and cannot work normally due to incapability of heat dissipation in time is reduced; further, because the heat-conducting structural adhesive has certain fluidity, the grooves 4 are arranged to contain the adhesive body and limit the adhesive body, so that the possibility that other structures in the power management system shell are influenced due to the fact that the adhesive body cannot be limited is reduced.

In order to ensure the bonding stability of the PCB 1, the height of the groove 4 is greater than or equal to 2mm, the bonding area of the heat-conducting structural adhesive and the PCB 1 is greater than or equal to eighty percent of the bottom area of the PCB 1 (i.e., the area of the PCB 1 facing the bottom shell 3), by limiting the depth of the groove 4 and combining the contact area of the heat-conducting structural adhesive and the PCB 1,the stability of the adhesion of the bottom shell 3 and the PCB 1 is ensured. Preferably, the thermal conductivity is chosen to be greater than 1.4W/(m.K) (W/m) _· Degree) of a heat conductive structural adhesive, such as a heat conductive adhesive of the polyurethane of Huitian 8658 and a heat conductive adhesive of UB5205K of Youbang.

Because the heat-conducting structural adhesive has certain fluidity and needs to be solidified for a period of time, in order to reduce the possibility of displacement of the PCB 1 in the period of gelation and solidification of the heat-conducting structure, the heat-conducting structural adhesive is provided with a positioning column 5 and a clamping rib position 7. Specifically, the positioning columns 5 are arranged on the bottom shell 3, and the positioning columns 5 penetrate through the PCB 1, so that the number and the positions of the positioning columns 5 are not limited, elements on the PCB 1 are avoided, the positioning columns 5 can fix the PCB 1, and the possibility of displacement of the PCB 1 along the cross section direction of the positioning columns 5 is reduced.

Further, the clamping rib position 7 is arranged on the upper cover 2, the clamping rib position 7 is a column body, and can be abutted against the upper surface of the PCB 1 (namely, the surface of the upper cover 2 is faced), as various elements are arranged on the PCB 1, a certain space is reserved between the upper cover 2 and the upper surface of the PCB 1, and pressure can be applied to the PCB 1 by arranging the clamping rib position 7, so that the PCB 1 is fully contacted with the heat-conducting structural adhesive, and the possibility that the PCB 1 is displaced along the axial direction of the positioning column 5 is reduced.

The positioning column 5 and the clamping rib 7 limit the PCB 1 during solidification of the heat conduction structure glue, so that the possibility of displacement of the PCB 1 during gelation and fixation of the heat conduction structure is reduced, and the secondary fixation technical effect is achieved.

Besides providing support for the PCB 1 through the groove 4, the bottom case 3 is further provided with a supporting rib 6 for reinforcing the support for the edge of the PCB 1, so as to reduce the possibility of deformation of the PCB 1 caused by uneven support, and as a more preferred embodiment, the distance between adjacent supporting ribs 6 is less than or equal to 25mm, the specific structure of the supporting rib 6 is not limited, and the supporting rib 6 is supported on the lower surface of the PCB 1, and the contact surface between the supporting rib 6 and the PCB 1 is a plane.

Further, the upper cover 2 and the bottom shell 3 are connected through a buckle, so that compared with the bolt connection, the buckle connection is more convenient when the switch shell is in a switch shell, and materials are saved. The connector avoidance notch 9 is arranged on the periphery of the upper cover 4 and/or the bottom shell 3, and elements in the power management system shell are convenient to be connected with a wire harness outside the shell through the avoidance notch 9.

As shown in fig. 5, the bottom surface of the bottom shell 3 (i.e. the surface far away from the PCB board 1) is provided with a heat dissipation window 31, the heat dissipation window 31 is a hollow frame structure, and is not greatly affected by the structural strength of the bottom shell 3 due to the frame structure, after the PCB board 1 heats, heat is transferred to the bottom shell 3 through the heat conduction structural adhesive, and the heat dissipation window 31 on the bottom shell 3 is combined, so that the volatilization of the heat can be further enhanced, and the possibility that the PCB board 1 is damaged and cannot work normally due to the fact that the heat cannot be dissipated in time is further reduced.

Example 2

On the basis of embodiment 1, this embodiment is in the side of drain pan 3 is connected with fixed plate 8, fixed plate 8 with upper cover 2 joint, specifically be provided with setting element 81 on the fixed plate 8, corresponding upper cover 2 is provided with location draw-in groove 21, setting element 81 is the strip structure, every the extending direction of setting element 81 is the axis direction of location draw-in groove 21, the setting element 81 can chucking in location draw-in groove 21, optionally, follow fixed plate 8's length direction has set gradually 3 setting element 81, of course, the quantity of setting element 81 can be adjusted according to actual conditions, through setting up location draw-in groove 21 and setting element 51, can strengthen upper cover 2 with the connection stability of drain pan 3.

The fixing plate 8 is detachably connected to the battery pack, specifically, a hole is formed in the fixing plate 8, a bolt penetrates through the hole to fix the fixing plate 8 to the battery pack, and then the power management system is fixed to the battery pack.

According to the utility model, the fixing plate 8 is arranged on the side surface of the bottom shell 3, compared with the fixing plate 8 arranged on the bottom surface of the bottom shell 3, the contact area between the fixing plate 8 and the battery pack can be reduced, and the power management system can be vertically arranged on the side surface of the battery core module 10.

In order to improve the stability of the support of the fixed plate 8 to the power management system, a tripod 11 is provided, two sides of the tripod 11 respectively support against the fixed plate 8 and the bottom shell 3, and the number of the tripod 11 is determined according to practical situations.

Optionally, a reinforcing rib is disposed on the fixing plate 8, so as to strengthen the structural strength of the fixing plate 8.

Example 3

A battery system, as shown in fig. 6-7, includes a power management system according to embodiment 3, and because the fixing plate 8 is disposed on the side of the bottom shell 3, the power management system can be vertically placed on the side of the battery core module 10, so as to reduce the distance between the power management system and the CCS component, achieve the technical effect of reducing the wire harness consumption of the whole package system, and improve the space utilization rate of the battery system.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a power management system shell structure, its characterized in that includes upper cover (2) and drain pan (3), upper cover (2) with be provided with PCB board (1) between drain pan (3), be provided with a plurality of recess (4) in drain pan (3), recess (4) are used for holding heat conduction structure and glue, PCB board (1) pass through heat conduction structure glue paste in drain pan (3).

2. A power management system housing structure according to claim 1, wherein the height of the recess (4) is greater than or equal to 2mm.

3. The power management system housing structure of claim 1, wherein the bonding area of the heat conductive structural adhesive and the PCB board (1) is greater than or equal to eighty percent of the bottom area of the PCB board (1).

4. The power management system shell structure according to claim 1, wherein the bottom shell (3) is provided with a plurality of positioning columns (5), and the positioning columns (5) penetrate through the PCB board (1).

5. A power management system housing structure according to claim 1, wherein the bottom shell (3) is provided with a supporting rib position (6), the supporting rib position (6) is used for providing support for the edge of the PCB board (1), and the distance between adjacent supporting rib positions (6) is less than or equal to 25mm.

6. The power management system housing structure according to claim 1, wherein a fixing plate (8) is connected to a side surface of the bottom case (3), the fixing plate (8) is detachably connected to the battery pack, and the fixing plate (8) is clamped with the upper cover (2).

7. The power management system shell structure according to claim 1, wherein a plurality of heat dissipation windows (31) are arranged on the bottom surface of the bottom shell (3), and the heat dissipation windows (31) are hollow frame structures.

8. The power management system shell structure according to claim 1, wherein a plurality of clamping rib positions (7) are arranged on the upper cover (2), and the clamping rib positions (7) are used for abutting against the upper surface of the PCB (1).

9. A power management system housing structure according to any of claims 1-8, wherein the upper cover (2) and the bottom case (3) are snap-fit.

10. A power management system housing structure according to any one of claims 1-8, wherein the upper cover (2) and/or the bottom housing (3) are provided with connector relief notches (9) at their outer periphery.

11. A battery system comprising a power management system housing structure according to any one of claims 1-10.