CN217788501U

CN217788501U - BMS, BMS subassembly and battery

Info

Publication number: CN217788501U
Application number: CN202220527471.8U
Authority: CN
Inventors: 王晓宾; 李云庆; 徐博豪; 汤杰; 江吉兵
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-11-11
Anticipated expiration: 2032-03-11

Abstract

The utility model relates to a battery technology field especially relates to a BMS, BMS subassembly and battery. The BMS includes a housing and a BMS module mounted in the housing. The shell includes the main casing body and overlap joint portion, and the main casing body all is provided with overlap joint portion along the both sides of left right direction. When a plurality of BMS stacked up the equipment along its direction of height, the overlap joint portion of the same one side of a plurality of main casings misplaces the overlap joint cooperation in proper order to make a plurality of BMS be echelonment along the fore-and-aft direction and distribute. The BMS subassembly includes fastener and a plurality of BMS, and a plurality of BMS are the echelonment along the fore-and-aft direction and distribute to be through fastener fixed connection. The battery includes box and BMS subassembly, has seted up the mounting hole on the box, fastener and mounting hole threaded connection to install a plurality of BMS in the box. Through designing overlap joint portion and main casing body integral type for BMS passes through the shell and can realize a plurality of BMS's fast assembly, has simplified BMS's mounting process, has improved the installation effectiveness.

Description

BMS, BMS subassembly and battery

Technical Field

The utility model relates to a battery technology field especially relates to a BMS, BMS subassembly and battery.

Background

The BMS (battery management system) is a key component of the battery system, is mainly used for managing the energy of the battery system, and realizes intelligent management of the battery system by monitoring parameters such as the voltage, the current, the temperature and the like of the battery system.

At present, a plurality of BMS generally assemble into the BMS subassembly through a plurality of installing support, support sleeve and supporting connecting piece etc to install on the box of battery, make BMS's mounting process comparatively loaded down with trivial details, it is long consuming time, the inefficiency, be unfavorable for battery production efficiency's improvement.

Therefore, there is a need for a BMS, a BMS module and a battery to solve the above-mentioned problems

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a BMS, BMS subassembly and battery to simplify BMS's mounting process, shorten BMS's installation time, improve the installation effectiveness.

To achieve the purpose, the utility model adopts the technical proposal that:

a BMS comprises a housing and a BMS module arranged in the housing, and is characterized in that the housing comprises a main housing, and the two sides of the main housing along the left and right directions are provided with the lap joint parts;

when the plurality of BMSs are stacked and assembled in the height direction thereof, the overlapping parts at the same side of the plurality of main housings are sequentially in staggered overlapping engagement, so that the plurality of BMSs are distributed in a stepped shape in the front-rear direction.

As an alternative of the BMS, the bridge is provided with a plurality of through holes spaced apart in the front-rear direction; one of the through holes of each overlapping part in staggered overlapping matching can be coaxial with each other, so that a fastening piece can sequentially penetrate through the through holes in coaxial arrangement to fixedly connect the overlapping parts in staggered overlapping matching, and the through holes in coaxial arrangement are different in the position of each overlapping part.

As an alternative to the BMS, the main housing includes an upper housing and a lower housing, the upper housing being covered on the lower housing;

the lap joint portion includes:

the ear plates extend outwards from two ends of the lower shell along the left-right direction; and

the lug plate comprises a first boss, wherein the upper end face of the lug plate is convexly provided with the first boss, and the first boss is flush with the top end of the upper shell.

As an alternative of the BMS, the lap joint further includes:

the lower end face of the lug plate is convexly provided with the second boss, and the bottom end of the lower shell is higher than the top end of the second boss.

As an alternative to the BMS, the main housing includes an upper housing and a lower housing, the upper housing covering the lower housing;

the lap joint portion includes:

the ear plates extend outwards from two ends of the lower shell along the left and right directions; and

the upper end face of the lug plate is convexly provided with the first boss, and the first boss is higher than the top end of the upper shell.

As the alternative of BMS, first boss is located the otic placode is followed the rear end of fore-and-aft direction, and with the otic placode is followed the front end of fore-and-aft direction encloses into dodging the groove, so that first boss with the otic placode is stair structure, at least one the perforating hole is located the front end of otic placode, all the other the perforating hole runs through in proper order the otic placode with first boss.

As an alternative of the BMS, the main housing may be provided at intervals with at least two of the overlapping parts at each side in the left-right direction.

A BMS module comprises a fastener and a plurality of BMSs, which are arranged in a stepped shape in the front and rear direction and are fixedly coupled by the fastener.

As an alternative to the BMS module, the fasteners are bolts.

A battery comprises a box body and the BMS assembly, wherein the box body is provided with a mounting hole, and a fastener can be in threaded connection with the mounting hole so as to mount a plurality of BMSs in the box body.

The utility model has the advantages that:

the utility model provides a BMS, BMS's shell includes the main casing body and overlap joint portion, and the main casing body all is provided with overlap joint portion along the both sides of controlling the direction, when a plurality of BMS pile up the equipment along its direction of height, the overlap joint portion with one side of the main casing body dislocation overlap joint cooperation in proper order to make a plurality of BMS be the echelonment along the fore-and-aft direction and distribute. Through designing overlap joint portion and main casing body integral type for BMS can realize a plurality of BMS's fast assembly through the shell of self, need not to use installed parts such as installing support, support sleeve, has simplified BMS's mounting process, has shortened installation time, has improved the installation effectiveness.

The utility model provides a pair of BMS subassembly can pile up the equipment with a plurality of BMS along its direction of height through the shell cooperation installation of fastener and BMS, need not to use installed parts such as installing support, support sleeve, has simplified the mounting process of BMS, has shortened installation time, has improved the installation effectiveness of BMS subassembly.

The utility model provides a pair of battery is through adopting foretell BMS subassembly, has simplified BMS's mounting process, has shortened installation time, has improved the installation effectiveness of battery.

Drawings

Fig. 1 is a schematic structural diagram of a BMS provided by an embodiment of the present invention;

fig. 2 is a schematic structural view illustrating a BMS module mounted in a box according to an embodiment of the present invention;

fig. 3 is the utility model discloses BMS unit mount is in the structure decomposition sketch map of box that provides.

The component names and designations in the drawings are as follows:

1. a housing; 11. an upper housing; 12. a lower housing; 13. a lap joint part; 130. a through hole; 131. an ear plate; 132. a first boss; 133. a second boss; 134. an avoidance groove;

2. a fastener;

3. and (4) a box body.

Detailed Description

In order to make the technical problems, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further explained below by means of specific embodiments in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

A plurality of BMSs are required to be intelligently managed in the use process of the lithium battery. A plurality of BMSs are generally stacked and mounted in a case of a battery and electrically connected to a battery module. It should be noted that, a plurality of BMSs are stacked and installed, and thus, the occupation of excessive space of the BMS can be reduced, and compact installation can be realized. A plurality of BMS are the echelonment simultaneously and distribute, not only make things convenient for every BMS and battery module to carry out the grafting operation of cable, can make things convenient for the dismouting moreover.

At present, a plurality of mounting brackets, supporting sleeves and mounting parts such as matched connecting pieces need to be used in the BMS mounting process, so that the mounting process of the BMS is more complicated, time-consuming and long, low in efficiency and not beneficial to improving the production efficiency of the battery.

As shown in fig. 1 to 3, the present embodiment discloses a BMS including a housing 1 and BMS modules mounted in the housing 1. The housing 1 includes a main casing body, and both sides of the main casing body in the left-right direction (the length direction of the main casing body) are provided with lap portions 13. When the plurality of BMSs are stacked and assembled in the height direction thereof, the overlapping parts 13 of the same side of the plurality of main housings are sequentially in staggered overlapping engagement so that the plurality of BMSs are distributed in a stepped shape in the front and rear direction (the width direction of the main housings).

Through with overlap joint portion 13 and main casing body integral type design for BMS can realize a plurality of BMS's fast assembly through the shell 1 of self, need not to use installed parts such as installing support, support sleeve, has simplified BMS's mounting process, has shortened installation time, has improved the installation effectiveness.

As shown in fig. 2 and 3, the present embodiment also discloses a BMS assembly including a fastening member 2 and a plurality of BMSs arranged in a stepped fashion in the front and rear direction and fixedly coupled by the fastening member 2.

Specifically, the fastener 2 is a bolt. A plurality of BMSs are stacked together and then distributed in a stepped shape, and then pass through the overlap portion 13 of the overlap fitting in sequence by bolts, and the BMS module is mounted to the case 3.

As shown in fig. 1 to 3, the overlapping part 13 is provided with a plurality of through holes 130 spaced apart in the front-rear direction, and the through holes 130 penetrate through the upper and lower ends of the overlapping part 13. One of the through holes 130 of each of the lap parts 13 which are misaligned lap-fitted can be coaxial with each other so that the fastening members 2 can sequentially pass through the plurality of coaxially disposed through holes 130 to fixedly connect the plurality of misaligned lap-fitted lap parts 13, and the plurality of coaxially disposed through holes 130 are different in position at the respective lap parts 13 so that the plurality of BMSs are different in position in the front-rear direction, eventually rendering the plurality of BMSs stepped.

It should be noted that the number of the through holes 130 of each of the taps 13 is the same as the number of the BMS in the BMS module. The BMS module of the present embodiment includes three BMSs, and thus, each of the taps 13 has three through-holes 130. Of course, the BMS module may include two or more BMSs according to the use requirement, and the number of the through holes 130 formed in each of the bridging parts 13 may be adaptively adjusted.

The present embodiment is described by taking an example in which the BMS module includes three BMSs. Meanwhile, for ease of understanding, the three through holes 130 on the overlapping part 13 are defined as a first through hole, a second through hole, and a third through hole, respectively, from front to back in the front-to-back direction.

As shown in fig. 2 and 3, when three BMSs are stacked and assembled, the first through hole of the lap part 13 of the BMS located at the top end, the second through hole of the lap part 13 of the BMS located at the middle, and the third through hole of the lap part 13 of the BMS located at the bottom end are coaxially communicated, and bolts can be screw-coupled to the inner wall of the case 3 after sequentially passing through the first through hole, the second through hole, and the third through hole of the different lap parts 13 to install the BMS assembly into the case 3.

It should be noted that, relative to the middle BMS fixed to the top BMS, the middle BMS is fixed to the bottom BMS, and the last bottom BMS is fixed to the case 3, this embodiment can directly and fixedly connect the three BMSs to the case 3 through the fasteners 2, and the connection structure is more stable and reliable.

Further, every main casing body is provided with two at least overlap joint portions 13 along each side of left and right sides equal interval, has increased adjacent BMS's overlap joint area, has improved the joint strength and the stability of BMS subassembly.

The main casing body of this embodiment is the rectangle, has a overlap joint portion 13 respectively at four corner positions of the main casing body for the main casing body receives balanced fastening force, can install three BMS reliably in box 3 through four bolts, need not to use installed parts such as link, support sleeve, has improved BMS subassembly's installation effectiveness.

As shown in fig. 1 to 3, the main housing includes an upper housing 11 and a lower housing 12, and the upper housing 11 is covered on the lower housing 12. The bridging portion 13 includes an ear plate 131 and a first boss 132, and the ear plates 131 are extended outwards from both ends of the lower case 12 in the left-right direction. The upper end surface of the ear plate 131 is convexly provided with a first boss 132, and the first boss 132 is flush with the top end of the upper shell 11.

Specifically, both sides of the lower case 12 in the left-right direction have two ear plates 131, and a first boss 132 is projected from each ear plate 131. The four first bosses 132 are distributed along the circumferential direction of the upper housing 11, and can provide guiding and positioning functions when the upper housing 11 is mounted on the lower housing 12.

In this embodiment, the first boss 132 is located at the rear end of the ear plate 131 along the front-back direction, and encloses an avoiding groove 134 with the front end of the ear plate 131 along the front-back direction, so that the first boss 132 and the ear plate 131 are in a step structure, at least one through hole 130 is located at the front end of the ear plate 131, and the rest of the through holes 130 sequentially penetrate through the ear plate 131 and the first boss 132.

Specifically, the ear plate 131 is divided into a front end portion and a rear end portion in the front-rear direction, wherein the front end portion occupies approximately one third of the ear plate 131, and the rear end portion occupies approximately two thirds of the ear plate 131. The end face of the front end of the ear plate 131 is the bottom face of the avoiding groove 134, and a through hole 130 (first through hole) is located at the front end of the ear plate 131 (in the avoiding groove 134). Two through holes 130 (a second through hole and a third through hole) are located at the rear end of the ear plate 131. The head of bolt can be crossed in the groove 134 of dodging, and the head protrusion of avoiding bolt after the BMS unit mount is located the BMS surface of upper end, has realized the compact installation of BMS subassembly, has reduced the volume of BMS subassembly simultaneously, avoids BMS subassembly and other parts to take place to interfere.

Further, the overlapping part 13 further includes a second boss 133, the lower end surface of the ear plate 131 is convexly provided with the second boss 133, and the bottom end of the lower shell 12 is higher than the top end of the second boss 133. When the three BMSs are stacked and assembled, the second bosses 133 of the overlapping parts 13 of one BMS overlap the first bosses 132 of the corresponding overlapping parts 13 of the adjacent BMS, so that a certain gap is formed between the two adjacent BMSs, thereby improving the ventilation and heat dissipation efficiency of the BMS.

It should be noted that the second bosses 133 also provide a gap between the lower case 12 of the BMS located at the bottom end and the housing 3, so that the wall plate of the housing 3 can be prevented from colliding with the BMS located at the bottom end when the housing 3 vibrates, which is advantageous to improve the installation of the BMS.

In other embodiments, the main housing includes an upper housing 11 and a lower housing 12, and the upper housing 11 is covered on the lower housing 12. The bridging portion 13 includes an ear plate 131 and a first boss 132, and the ear plates 131 are extended outwards from both ends of the lower case 12 in the left-right direction. The upper end surface of the ear plate 131 is convexly provided with a first boss 132, and the first boss 132 is higher than the top end of the upper shell 11. Specifically, two ear plates 131 are respectively provided on both sides of the lower housing 12 in the left-right direction, and a first boss 132 is projected from each ear plate 131. The four first bosses 132 are distributed along the circumferential direction of the upper case 11, and can prevent the upper case 11 from being pressed or collided with in the circumferential direction or upward, thereby improving the safety of the BMS. When first boss 132 and second boss 133 overlap joint simultaneously, can increase the interval between two adjacent BMSs, further improved BMS's ventilation cooling effect.

This embodiment still discloses a battery, and this battery includes box 3 and foretell BMS subassembly, has seted up the mounting hole on the box 3, fastener 2 can with mounting hole threaded connection to install a plurality of BMSs in box 3, simplified BMS's mounting process, shortened installation time, improved the installation effectiveness of battery.

Specifically, four mounting holes have been seted up on box 3, and the mounting hole is the screw hole, can install three BMS in box 3 through four bolts and the mounting hole threaded connection that corresponds.

The above embodiments have only been explained the basic principle and characteristics of the present invention, the present invention is not limited by the above embodiments, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these changes and modifications all fall into the scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A BMS including a housing (1) and a BMS module mounted in the housing (1), characterized in that the housing (1) includes a main housing provided with a lap joint part (13) at both sides thereof in a left-right direction;

when the plurality of BMSs are stacked and assembled in the height direction, the lap parts (13) on the same side of the plurality of main housings are sequentially in staggered lap joint fit, so that the plurality of BMSs are distributed in a stepped shape in the front-rear direction.

2. The BMS according to claim 1, wherein the bridging part (13) is provided with a plurality of through holes (130) spaced apart in the front-rear direction; one of the through holes (130) of each overlapping part (13) in staggered overlapping matching can be coaxial with each other, so that a fastening piece (2) can sequentially penetrate through the through holes (130) which are coaxially arranged, the overlapping parts (13) in staggered overlapping matching are fixedly connected, and the positions of the through holes (130) which are coaxially arranged are different in the overlapping parts (13).

3. The BMS according to claim 2, wherein the main housing comprises an upper housing (11) and a lower housing (12), the upper housing (11) being provided on the lower housing (12) in a covering manner;

the lap joint (13) comprises:

the ear plates (131) extend outwards from both ends of the lower shell (12) along the left-right direction; and

the lug plate structure comprises a first boss (132), wherein the first boss (132) is convexly arranged on the upper end face of the lug plate (131), and the first boss (132) is flush with the top end of the upper shell (11).

4. The BMS according to claim 3, wherein the bridge (13) further comprises:

the lower end face of the lug plate (131) is convexly provided with the second boss (133), and the bottom end of the lower shell (12) is higher than the top end of the second boss (133).

5. The BMS according to claim 2, wherein the main housing comprises an upper housing (11) and a lower housing (12), the upper housing (11) being provided on the lower housing (12) in a covering manner;

the lap joint (13) comprises:

the upper end face of the lug plate (131) is provided with the first boss (132) in a protruding mode, and the first boss (132) is higher than the top end of the upper shell (11).

6. The BMS according to claim 3 or 5, wherein the first bosses (132) are located at rear ends of the ear plates (131) in the front-rear direction and define an escape groove (134) with front ends of the ear plates (131) in the front-rear direction, so that the first bosses (132) and the ear plates (131) have a stepped structure, at least one of the through holes (130) is located at the front ends of the ear plates (131), and the rest of the through holes (130) sequentially penetrate the ear plates (131) and the first bosses (132).

7. The BMS according to claim 1, wherein at least two of the taps (13) are spaced apart from each side of the main housing in the left-right direction.

8. A BMS module comprising a fastening member (2) and a plurality of the BMS according to any one of claims 1 to 7, the plurality of BMSs being stepped in a front-rear direction and fixedly coupled by the fastening member (2).

9. The BMS assembly according to claim 8, characterized in that the fasteners (2) are bolts.

10. A battery comprising a case (3) and the BMS module according to claim 8 or 9, wherein the case (3) is formed with mounting holes, and the fasteners (2) are threadedly connectable to the mounting holes to mount a plurality of BMSs in the case (3).