CN219812323U

CN219812323U - BMS device

Info

Publication number: CN219812323U
Application number: CN202320535418.7U
Authority: CN
Inventors: 刘峰; 陈保国; 尚宏伟; 张京京; 周哲
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-10-10
Anticipated expiration: 2033-03-17

Abstract

The utility model provides a BMS device, which comprises a lower shell, an upper cover and a PCB board; the lower shell and the upper cover are mutually buckled and surrounded to form an accommodating space for accommodating the PCB; the edge of the lower shell is provided with a plurality of mounting holes for fixing the BMS device, wherein the mounting holes comprise horizontal mounting holes with the axial direction being the vertical direction and vertical mounting holes with the axial direction being the horizontal direction; the edge of the lower shell is provided with a plurality of lugs, a plurality of mounting holes are formed in the lugs, and part of the horizontal mounting holes and part of the vertical mounting holes are formed in the same lug; the lower shell comprises a bottom plate, the edge of one side of the bottom plate is turned upwards to form a side plate, a plug connector avoiding hole is formed in the side plate, a plug connector port is formed in one side of the PCB, and the plug connector port and the plug connector avoiding hole are correspondingly arranged; the outside of upper cover is equipped with "V" type and dodges the groove, and "V" type dodges the groove and keep away from the one side that has the plug connector port of PCB board. The BMS device has the advantages that the integral strength of the BMS device is enhanced, and the protection performance on the PCB is improved.

Description

BMS device

Technical Field

The utility model belongs to the technical field of power batteries, and particularly relates to a BMS device.

Background

Along with the popularization and application of electric vehicles, the BMS, namely a battery management system, has put forward higher and higher requirements on the functional safety of the electric vehicles, and the BMS is taken as a key component of a battery pack, and the structural design of a shell of the BMS is quite important. The existing BMS device technical scheme is to fix a PCB on a lower shell, and then to fix the PCB through connection of an upper cover and the lower shell. But prior art scheme BMS device is mostly horizontal installation, and lower casing and upper cover carry out the opening simultaneously to PCB board connector position and dodge, lead to structural strength not enough, have vibration durable inefficacy, and bulk strength is weaker. Traditional BMS device is difficult to satisfy BMS and normally works under the relatively poor environment of operating mode.

Disclosure of Invention

In view of the above, the present utility model aims to provide a BMS device to enhance the overall strength of the BMS device, improve the protection of the PCB board and make the overall layout more compact.

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

a BMS device includes a lower case, an upper cover, and a PCB board; the lower shell and the upper cover are mutually buckled and surrounded to form an accommodating space for accommodating the PCB;

the edge of the lower shell is provided with a plurality of mounting holes for fixing the BMS device, and the mounting holes comprise horizontal mounting holes with the axial direction being the vertical direction and vertical mounting holes with the axial direction being the horizontal direction; the edge of the lower shell is provided with a plurality of lugs, a plurality of mounting holes are formed in the lugs, and part of the horizontal mounting holes and part of the vertical mounting holes are positioned on the same lug;

the lower shell comprises a bottom plate, the edge of one side of the bottom plate is turned upwards to form a side plate, a plug connector avoiding hole is formed in the side plate, a plug connector port is formed in one side of the PCB, and the plug connector port and the plug connector avoiding hole are correspondingly arranged;

the outer side of the upper cover is provided with a V-shaped avoidance groove, and the V-shaped avoidance groove is far away from one side of the PCB, which is provided with the plug connector port.

Optionally, the lug with the horizontal mounting hole and the vertical mounting hole includes a horizontal portion and a vertical portion, the horizontal mounting hole is disposed on the horizontal portion, the vertical mounting hole is disposed on the vertical portion, and a reinforcing rib is disposed between the horizontal portion and the vertical portion.

Optionally, the plug connector dodges the hole and is equipped with a plurality ofly, and a plurality of the plug connector dodges the hole and follows the length direction interval setting of curb plate, the plug connector dodges the hole and is equipped with the turn-ups structure, right the plug connector port forms the parcel protection.

Optionally, the lower casing is provided with a step surface for supporting the PCB, the upper cover is provided with a support column facing the PCB, and the support column and the step surface are positioned and fixed on the PCB.

Optionally, the step face sets up the corner of lower casing, the support column with the step face corresponds the setting, the support column with all be equipped with the fixed orifices on the step face, the corresponding position of PCB board is equipped with dodges the hole, and the screw wears to establish the fixed orifices with dodge in the hole.

Optionally, the inner side surface of the upper cover and the inner side surface of the lower shell are respectively provided with a reinforcing rib which is transversely and vertically arranged in a crossing manner.

Optionally, the edge of upper cover is towards the direction of lower casing is equipped with the bending, the edge of lower casing is towards the direction of upper cover is equipped with the bending, the bending of upper cover with the mutual joint cooperation of bending of lower casing.

Optionally, the bending of the upper cover at least partially overlaps the bending of the lower housing.

Compared with the prior art, the BMS device has the following beneficial effects:

according to the BMS device disclosed by the utility model, the horizontal mounting holes and the vertical mounting holes are formed, so that the BMS device can be mounted more flexibly, the mounting structure is firmer, and meanwhile, the harsher vibration requirement can be met. The arrangement of the V-shaped avoidance groove can reduce the occupied space of the BMS device, avoid other structures in the battery pack and improve the space utilization rate in the battery pack.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is an isometric view of a BMS device according to an embodiment of the present utility model;

fig. 2 is a schematic front view of a BMS device according to an embodiment of the present utility model;

fig. 2-a is a schematic partial front view of a BMS device according to an embodiment of the present utility model;

fig. 3 is an exploded view illustrating a BMS device according to an embodiment of the present utility model;

FIG. 4 is an isometric view of a lower housing according to an embodiment of the present utility model;

FIG. 4-A is a schematic view of a partial isometric view of a lower housing according to an embodiment of the present utility model;

FIG. 5 is an isometric view of a top cover according to an embodiment of the present utility model;

FIG. 6 is an isometric view of a top cover according to an embodiment of the present utility model;

fig. 7 is an isometric view of a lower housing and a PCB board according to an embodiment of the present utility model;

fig. 7-a is a schematic diagram of a partial isometric view of a lower housing and a PCB board according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a lower housing; 101. a horizontal mounting hole; 102. a vertical mounting hole; 103. a first reinforcing rib; 104. a flanging structure; 105. a steel sleeve; 107. a side plate; 2. an upper cover; 201. v-shaped avoiding grooves; 203. a fixing hole; 204. a support column; 205. a label area; 206. a second reinforcing rib; 3. a PCB board; 4. overlapping and clamping; 5. and (5) a screw.

Detailed Description

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.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 7-a, the present utility model discloses a BMS device including a lower case 1, an upper cover 2, and a PCB board 3. The lower housing 1 and the upper cover 2 are fastened with each other to form an accommodating space for accommodating the PCB 3, and the PCB 3 is arranged in the accommodating space. The upper cover 2 and the lower shell 1 are of injection-molded structure and lightweight design.

Specifically, the edge of the lower case 1 is provided with a plurality of mounting holes for fixing the BMS device, and the mounting holes are provided to fix the BMS device to the battery pack. The mounting holes include a horizontal mounting hole 101 having an axial direction in a vertical direction and a vertical mounting hole 102 having an axial direction in a horizontal direction, thereby fixing the BMS device from a plurality of directions. The edge of the lower housing 1 is provided with a plurality of lugs, a plurality of mounting holes are arranged on the lugs, and part of the horizontal mounting holes 101 and part of the vertical mounting holes 102 are positioned on the same lug.

The mounting hole is embedded with the steel sleeve 105 so as to increase the strength and rigidity of the mounting hole, ensure the torque of the fixing bolt and avoid the risks of irreversible plastic deformation, damage, breakage and the like of the plastic end face of the mounting hole. The shell is provided with mounting holes in the horizontal direction and the vertical direction, so that different space limitation requirements and various mounting modes can be met, and higher mounting freedom degree is realized. The more severe vibration requirements can be met through the two-direction combined fixed installation mode.

The lower shell 1 comprises a bottom plate, the edge of one side of the bottom plate is upwards turned to form a side plate 107, a plug connector avoiding hole is formed in the side plate 107, a plug connector port is formed in one side of the PCB 3, and the plug connector port and the plug connector avoiding hole are correspondingly arranged.

The outer side of the upper cover 2 is provided with a V-shaped avoidance groove 201, the V-shaped avoidance groove 201 is arranged on the large surface of the upper cover 2, and an opening faces to the edge of one side of the upper cover 2, specifically, the opening faces to one side, far away from the PCB 3, with a plug connector port. The V-shaped avoidance groove 201 is used for avoiding other structures in the battery pack, so that space occupation of the BMS device is reduced, and space utilization rate of the battery pack is improved. The upper cover 2 is also provided with a label area 205 for attaching labels.

The BMS (Battery management) MANAGEMENT SYSTEM, BMS) is a tie between a BATTERY and a user, and the main object is a secondary BATTERY, so that the utilization rate of the BATTERY is improved, the phenomena of overcharge and overdischarge of the BATTERY are prevented, the service life of the BATTERY is prolonged, and the state and abnormal phenomena of the BATTERY are monitored and early-warned in advance. This device has promoted BMS device structural strength, carries out parcel formula protection to 3 plug connector ports of PCB board, prevents the condensation, satisfies the functional safety level and is high, and the shell mounting means is diversified, can effectively promote production efficiency, reduction in production cost.

Further, the lug having the horizontal mounting hole 101 and the vertical mounting hole 102 includes a horizontal portion and a vertical portion, the horizontal mounting hole 101 is provided on the horizontal portion, the vertical mounting hole 102 is provided on the vertical portion, and the reinforcing rib is provided between the horizontal portion and the vertical portion. A lug having a horizontal mounting hole 101 and a vertical mounting hole 102 is provided at a corner of the lower case 1, a horizontal portion is provided on one side of the lower case 1, and a vertical portion is provided on the other side of the lower case 1. The number of the lug arrangement is not particularly limited, and a plurality thereof may be arranged as required.

The plug connector dodges the hole and is equipped with a plurality ofly on the lower casing 1, and a plurality of plug connector dodges the hole and set up along the length direction interval of curb plate 107, and the plug connector dodges the hole and be complete annular hole, and the plug connector dodges the hole and be equipped with flange structure 104 to form the parcel protection to the plug connector port.

Preferably, the step surface for supporting the PCB 3 is arranged on the lower shell 1, the support column 204 facing the PCB 3 is arranged on the upper cover 2, and the support column 204 and the step surface clamp, position and fix the PCB 3, so that the PCB 3 is prevented from moving after being installed.

Specifically, the step face sets up the corner at casing 1 down, and support column 204 corresponds the setting with the step face, all is equipped with fixed orifices 203 on support column 204 and the step face, and PCB board 3's corresponding position is equipped with dodges the hole, and screw 5 wears to establish in fixed orifices 203 and dodges the hole to further fix upper cover 2, casing 1 and PCB board 3 down.

Preferably, the inner side surface of the upper cover 2 and the inner side surface of the lower shell 1 are respectively provided with reinforcing ribs which are transversely and vertically arranged in a crossing way.

The edge of upper cover 2 is equipped with the bending towards the direction of lower casing 1, and the junction of bending and upper cover 2 is equipped with the strengthening rib, and the edge of lower casing 1 is equipped with the bending towards the direction of upper cover 2, and the junction of bending and lower casing 1 is equipped with the strengthening rib, and the mutual joint cooperation of bending of upper cover 2 and bending of lower casing 1. And the bending of the upper cover 2 at least partially overlaps the bending of the lower case 1. Wherein, the stiffener on the upper cover 2 is the second stiffener 206, and the stiffener on the lower housing 1 is the first stiffener 103.

The structure design of upper cover 2 and lower casing 1 cooperation department is overlap joint 4, and connected mode is two tang connection, plays the effect of supporting cooperation upper cover 2, effectively prevents debris such as condensation, dust from getting into in casing 1 under the BMS, extension BMS's life.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

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, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A BMS device, characterized in that: comprises a lower shell (1), an upper cover (2) and a PCB (3); the lower shell (1) and the upper cover (2) are mutually buckled and surrounded to form an accommodating space for accommodating the PCB (3);

the edge of the lower shell (1) is provided with a plurality of mounting holes for fixing the BMS device, and the mounting holes comprise horizontal mounting holes (101) with the axial direction being the vertical direction and vertical mounting holes (102) with the axial direction being the horizontal direction; the edge of the lower shell (1) is provided with a plurality of lugs, a plurality of mounting holes are formed in the lugs, and part of the horizontal mounting holes (101) and part of the vertical mounting holes (102) are positioned on the same lug; the lower shell (1) comprises a bottom plate, the edge of one side of the bottom plate is turned upwards to form a side plate (107), a plug connector avoiding hole is formed in the side plate (107), a plug connector port is formed in one side of the PCB (3), and the plug connector port and the plug connector avoiding hole are correspondingly arranged;

the outer side of the upper cover (2) is provided with a V-shaped avoidance groove (201), and the V-shaped avoidance groove (201) is far away from one side of the PCB (3) with the plug connector port.

2. A BMS device according to claim 1, wherein: the lug with the horizontal mounting hole (101) and the vertical mounting hole (102) comprises a horizontal part and a vertical part, the horizontal mounting hole (101) is arranged on the horizontal part, the vertical mounting hole (102) is arranged on the vertical part, and a reinforcing rib is arranged between the horizontal part and the vertical part.

3. A BMS device according to claim 1, wherein: the plug connector dodges the hole and is equipped with a plurality ofly, and a plurality of plug connector dodges the hole and follows the length direction interval setting of curb plate (107), the plug connector dodges the hole and is equipped with flange structure (104), right plug connector port forms the parcel protection.

4. A BMS device according to claim 1, wherein: the PCB is characterized in that a step surface for supporting the PCB (3) is arranged on the lower shell (1), a support column (204) facing the PCB (3) is arranged on the upper cover (2), and the support column (204) and the step surface are used for positioning and fixing the PCB (3).

5. A BMS device according to claim 4, wherein: the step surface is arranged at the corner of the lower shell (1), the supporting columns (204) are arranged corresponding to the step surface, fixing holes (203) are formed in the supporting columns (204) and the step surface, avoidance holes are formed in corresponding positions of the PCB (3), and screws (5) penetrate through the fixing holes (203) and the avoidance holes.

6. A BMS device according to claim 1, wherein: the inner side surface of the upper cover (2) and the inner side surface of the lower shell (1) are respectively provided with reinforcing ribs which are transversely and vertically arranged in a crossing manner.

7. A BMS device according to claim 1, wherein: the edge of upper cover (2) orientation lower casing (1) direction is equipped with the bending, lower casing (1) edge orientation upper cover (2) direction is equipped with the bending, upper cover (2) bend with lower casing (1) bend each other joint cooperation.

8. A BMS device according to claim 7, wherein: the bending of the upper cover (2) is at least partially overlapped with the bending of the lower shell (1).