CN221226419U

CN221226419U - Battery pack

Info

Publication number: CN221226419U
Application number: CN202322875594.8U
Authority: CN
Inventors: 梁亚东; 陈郭超; 葛少荣
Original assignee: Jingke Energy Storage Technology Co ltd
Current assignee: Jingke Energy Storage Technology Co ltd
Priority date: 2023-10-25
Filing date: 2023-10-25
Publication date: 2024-06-25
Anticipated expiration: 2033-10-25

Abstract

The present application relates to a battery pack, comprising: the battery pack comprises an upper cover, a lower cover and a battery pack module, wherein a containing cavity is formed between the upper cover and the lower cover, and the battery pack module is contained in the containing cavity; the upper cover comprises a cover body and an access panel, the access panel is detachably connected with the cover body, and one or more of a battery management system, an explosion-proof valve and a fire-fighting nozzle are arranged on the access panel; be provided with breach and first mounting hole on the lid, breach intercommunication access panel and hold the chamber, first mounting hole is provided with a plurality ofly along the circumference of breach, and the connecting piece passes first mounting hole and access panel connection to install access panel in the lid. According to the application, when the BMS is required to be overhauled or the explosion-proof valve and the fire-fighting nozzle are required to be replaced, the overhauling panel is only required to be detached, and the upper cover and the lower cover are not required to be separated, so that the overhauling process of the BMS, the replacement process of the explosion-proof valve and the fire-fighting nozzle are simplified, and the overhauling and replacement efficiency is improved.

Description

Battery pack

Technical Field

The application relates to the technical field of battery energy storage, in particular to a battery pack.

Background

The energy storage battery pack is an indispensable electric energy storage requirement of the solar photovoltaic power generation system, and has the main functions of storing electric energy of the photovoltaic power generation system and supplying power to a load in the condition of insufficient sunlight, at night and in an emergency state.

The battery pack comprises a box body and a battery pack module arranged in the box body. In the prior art, the case further includes components such as a Battery MANAGEMENT SYSTEM (BMS), an explosion-proof valve, and a fire-fighting nozzle, and the BMS is generally disposed on an upper cover of the case or inside the case, and the explosion-proof valve and the fire-fighting nozzle are generally disposed on the upper cover of the case. If the BMS needs to be overhauled, or the explosion-proof valve and the fire-fighting nozzle need to be replaced, the upper cover of the box body needs to be detached, so that the overhauling and replacing operations are complex and tedious.

Disclosure of utility model

The application provides a battery pack which is used for solving the problems of complex maintenance of a battery management system, and replacement operation of an explosion-proof valve and a fire-fighting nozzle.

The battery pack provided by the embodiment of the application comprises: the battery pack comprises an upper cover, a lower cover and a battery pack module, wherein a containing cavity is formed between the upper cover and the lower cover, and the battery pack module is contained in the containing cavity; the upper cover comprises a cover body and an overhaul panel, wherein the overhaul panel is detachably connected with the cover body, and one or more of a battery management system, an explosion-proof valve and a fire-fighting nozzle are arranged on the overhaul panel; the cover body is provided with a notch and a first mounting hole, the notch is communicated with the access panel and the accommodating cavity, the first mounting hole is formed in the periphery of the notch, and a connecting piece penetrates through the first mounting hole and is connected with the access panel so as to mount the access panel on the cover body.

In one possible design, the upper cover further comprises a mounting member disposed on a side of the gap remote from the access panel; the mounting piece is provided with a plurality of second mounting holes along circumference, the connecting piece passes in proper order the second mounting hole with first mounting hole with the access panel is connected.

In one possible design, the mounting member is integrally formed with the connecting member.

In one possible design, the mount is rectangular frame-like.

In one possible design, the access panel is provided with a third mounting hole along the circumferential direction, and the connecting member is connected with the connecting fitting after sequentially passing through the second mounting hole, the first mounting hole and the third mounting hole.

In one possible design, a first seal is provided between the mount and the cover.

In one possible design, the first seal is a sealing ring or sealant.

In one possible design, a second seal is provided between the access panel and the cover.

In one possible design, the lower cover includes a bottom plate and front, rear, and side plates attached to the bottom plate, and the battery module is bonded to the bottom plate.

In one possible design, the front plate and/or the rear plate are connected to the battery module by fasteners.

In the application, the battery module is accommodated in the accommodating cavity, and the upper cover and the lower cover can protect the battery module, so that the battery module is prevented from being damaged by external impact, and the service life of the battery module is prolonged. The access panel can be dismantled with the lid and be connected, and one or more in BMS, explosion-proof valve, the fire control shower nozzle set up in the access panel to when need overhauling or changing explosion-proof valve, the fire control shower nozzle to BMS, only need to dismantle the access panel can go on, need not to separate upper cover and lower cover, and then simplified BMS maintenance and explosion-proof valve, the fire control shower nozzle process of changing, improved BMS maintenance and explosion-proof valve, fire control shower nozzle efficiency of changing. In addition, since the upper cover and the lower cover are not required to be separated, the operations of BMS maintenance and replacement of the explosion-proof valve and the fire-fighting nozzle do not affect the sealability between the upper cover and the lower cover. Access panel and hold the chamber through breach intercommunication for BMS, explosion-proof valve and fire control shower nozzle can be connected or can operate the group battery module with the group battery module. The connecting piece passes through the first mounting hole and is connected with the access panel to reliably fix the access panel to the cover body.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

FIG. 1 is a schematic view of a battery pack according to an embodiment of the present application;

FIG. 2 is a schematic view of the access panel of FIG. 1;

FIG. 3 is a schematic view of the access panel of FIG. 1 from another perspective;

FIG. 4 is an exploded view of FIG. 1;

FIG. 5 is a schematic view of the cover in FIG. 4;

FIG. 6 is an exploded view of the upper cover of FIG. 4, excluding the cover;

FIG. 7 is a schematic view of the mounting and connecting members of FIG. 6;

fig. 8 is a schematic view of the structure of the lower cover in fig. 4.

Reference numerals:

1-an upper cover;

11-a cover;

111-notch;

112-a first mounting hole;

12-an access panel;

121-a third mounting hole;

13-a mount;

131-a second mounting hole;

14-connecting piece;

15-connecting the mating piece;

16-a first seal;

2-a lower cover;

21-a bottom plate;

22-front plate;

23-a back plate;

24-side plates;

3-a battery module;

4-a battery management system;

5-an explosion-proof valve;

6-a fire sprinkler;

7-connection valve.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

Detailed Description

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be noted that, the terms "upper", "lower", "left", "right", and the like in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

The present application provides a battery pack, as shown in fig. 1 to 4, comprising: the battery pack comprises an upper cover 1, a lower cover 2 and a battery pack module 3, wherein a containing cavity is formed between the upper cover 1 and the lower cover 2, and the battery pack module 3 is contained in the containing cavity; the upper cover 1 comprises a cover body 11 and an access panel 12, wherein the access panel 12 is detachably connected with the cover body 11, and one or more of a Battery MANAGEMENT SYSTEM (BMS) 4, an explosion-proof valve 5 and a fire-fighting nozzle 6 are arranged on the access panel 12.

The BMS4 is mainly used for intelligently managing and maintaining the battery pack module 3, preventing the battery pack module 3 from being overcharged and overdischarged, prolonging the service life of the battery pack module 3 and monitoring the state of the battery pack module 3; the explosion-proof valve 5 can adjust the internal and external pressure difference of the accommodating cavity to prevent the battery pack from explosion; the fire-fighting nozzle 6 can extinguish fire rapidly when detecting fire inside the battery pack, and achieves accurate fire extinguishment. Furthermore, the fire-fighting nozzle 6 is connected with a connection valve 7, and the connection valve 7 can be connected with a fire-fighting pipe, thereby supplying the fire-fighting nozzle with liquid or solid required for fire extinguishment.

In this embodiment, as shown in fig. 1 to 4, the battery module 3 is accommodated in the accommodating chamber, and the upper cover 1 and the lower cover 2 can protect the battery module 3, thereby preventing the battery module 3 from being damaged by external impact and prolonging the service life of the battery module 3. The access panel 12 can be dismantled with lid 11 and be connected, and one or more in BMS4, explosion-proof valve 5, the fire control shower nozzle 6 sets up in access panel 12, thereby when need overhauling or change explosion-proof valve 5, fire control shower nozzle 6 to BMS4, only need with access panel 12 pull down can go on, need not to separate upper cover 1 and lower cover 2, and then simplified the maintenance of BMS4 and explosion-proof valve 5, fire control shower nozzle 6 change the process, improved BMS4 maintenance and explosion-proof valve 5, fire control shower nozzle 6 change the efficiency. In addition, since it is not necessary to separate the upper and lower covers 1 and 2, the operations of the BMS4 maintenance and the replacement of the explosion-proof valve 5 and the fire-fighting nozzle 6 do not affect the sealability between the upper and lower covers 1 and 2.

Specifically, as shown in fig. 5, the cover 11 is provided with a notch 111 and a first mounting hole 112, the notch communicates with the access panel 12 and the accommodating cavity, the first mounting hole 112 is provided with a plurality of first mounting holes along the circumference of the notch 111, and the connecting piece 14 passes through the first mounting hole 112 to be connected with the access panel 12 so as to mount the access panel 12 on the cover 11.

Access panel 12 and the receiving chamber are communicated through the gap 111 so that BMS4, explosion-proof valve 5 and fire sprinkler 6 can be connected with battery module 3 or can operate battery module 3. The connection member 14 is connected to the access panel 12 through the first mounting hole 112, thereby reliably fixing the access panel 12 to the cover 11.

It is understood that the first mounting holes 112 may be uniformly or unevenly disposed along the circumference of the notch 111.

More specifically, the service panel 12 is a metal piece or an injection molded piece formed by stamping, so that the size precision of the service panel 12 is higher, and the installation of the BMS4, the explosion-proof valve 5 and the fire-fighting nozzle 6 is more convenient.

In a specific embodiment, as shown in fig. 6, the upper cover 1 further comprises a mounting member 13, wherein the mounting member 13 is disposed on a side of the notch 111 away from the access panel 12; the mounting member 13 is provided with a plurality of second mounting holes 131 in the circumferential direction, and the connection member 14 is connected to the access panel 12 through the second mounting holes 131 and the first mounting holes 112 in sequence.

In the present embodiment, as shown in fig. 5, the cover 11 is provided with the notch 111 and the first mounting hole 112, so that the strength of the peripheral wall of the notch 111 is reduced. As shown in fig. 6, the mounting member 13 is disposed on a side of the notch 111 away from the access panel 12, so that a part of the force of the connecting member 14 acts on the peripheral wall of the notch 111 through the mounting member 13, thereby preventing stress concentration, and making the cover 11 less likely to be damaged or deformed.

It is understood that the second mounting holes 131 may be uniformly or unevenly disposed along the circumferential direction of the mounting member 13.

Further, as shown in fig. 7, the attachment 13 and the connection member 14 are integrally formed, so that the number of parts of the battery pack can be reduced, and the access panel 12 can be easily attached and detached.

Specifically, as shown in fig. 7, the mount 13 has a rectangular frame shape. Since the notch 111 is rectangular, the attachment 13 has a rectangular frame shape and can be fitted well to the peripheral wall of the notch 111.

More specifically, the material of the mounting member 13 may be steel, so that the strength and rigidity of the mounting member 13 are good, and the mounting member is not easy to damage.

In a specific embodiment, as shown in fig. 6, the access panel 12 is provided with a third mounting hole 121 in a circumferential direction, and the connection member 14 is connected to the connection counterpart 15 after passing through the second mounting hole 131, the first mounting hole 112, and the third mounting hole 121 in order.

In this embodiment, as shown in fig. 6, the connecting member 14 may be a screw, the connecting mating member 15 may be a nut, and the screw penetrates through the mounting member 13, the cover 11 and the access panel 12 and then mates with the nut, so that the mounting reliability of the access panel 12 is ensured, and the access panel 12 is not easy to fall off from the cover 11.

When overhauling or changing the explosion-proof valve 5 and the fire-fighting nozzle 6 to the BMS4, the overhauling panel 12 can be conveniently taken down by unscrewing the nut, thereby facilitating the overhauling of the BMS4 or changing the explosion-proof valve 5 and the fire-fighting nozzle 6.

In a specific embodiment, as shown in fig. 6, a first seal 16 is provided between the mounting member 13 and the cover 11.

In the present embodiment, as shown in fig. 6, the first sealing member 16 can seal the first mounting hole 112, thereby securing the sealability of the receiving chamber. The mounting member 13 presses the first sealing member 16 against the inner wall of the cover 11, improving the sealing effect of the first sealing member 16. Specifically, the first seal 16 is a gasket or sealant.

In addition, a second seal is provided between the access panel 12 and the cover 11, which can further improve the sealability of the receiving chamber.

The first sealing member 16 and the second sealing member form a double-layer sealing structure, so that the sealing performance of the cover 11 at the notch 111 and the first mounting hole 112 is good, and the battery pack can be safely used.

In a specific embodiment, as shown in fig. 8, the lower cover 2 includes a bottom plate 21 and front, rear and side plates 22, 23, 24 attached to the bottom plate 21, and the battery module 3 is bonded to the bottom plate 21.

In the present embodiment, as shown in fig. 8, the front plate 22, the rear plate 23, and the side plate 24 may be fixed to the top wall of the bottom plate 21 by welding, so that the connection of the front plate 22, the rear plate 23, the side plate 24 and the bottom plate 21 is reliable. The battery module 3 is adhered to the bottom plate 21 such that the battery module 3 does not move relative to the lower cover 2, thereby enabling the mounting stability of the battery module 3 to be ensured.

Specifically, the front plate 22 and/or the rear plate 23 are coupled to the battery module 3 by fasteners, thereby further improving the mounting stability of the battery module 3.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery pack, the battery pack comprising: the battery pack comprises an upper cover (1), a lower cover (2) and a battery pack module (3), wherein a containing cavity is formed between the upper cover (1) and the lower cover (2), and the battery pack module (3) is contained in the containing cavity;

the upper cover (1) comprises a cover body (11) and an overhaul panel (12), wherein the overhaul panel (12) is detachably connected with the cover body (11), and one or more of a battery management system (4), an explosion-proof valve (5) and a fire-fighting spray head (6) are arranged on the overhaul panel (12);

Be provided with breach (111) and first mounting hole (112) on lid (11), breach intercommunication access panel (12) with hold the chamber, first mounting hole (112) are followed the circumference of breach (111) is provided with a plurality ofly, connecting piece (14) pass first mounting hole (112) with access panel (12) are connected, so as to with access panel (12) install in lid (11).

2. The battery pack according to claim 1, wherein the upper cover (1) further comprises a mounting member (13), the mounting member (13) being provided at a side of the cutout (111) remote from the access panel (12);

The mounting piece (13) is provided with a plurality of second mounting holes (131) along the circumferential direction, and the connecting piece (14) sequentially passes through the second mounting holes (131) and the first mounting holes (112) to be connected with the access panel (12).

3. The battery pack according to claim 2, wherein the mounting member (13) is integrally formed with the connecting member (14).

4. The battery pack according to claim 2, wherein the mount (13) has a rectangular frame shape.

5. The battery pack according to claim 2, wherein the access panel (12) is provided with a third mounting hole (121) in a circumferential direction, and the connection member (14) is connected with the connection mating member (15) after passing through the second mounting hole (131), the first mounting hole (112), and the third mounting hole (121) in order.

6. The battery pack according to claim 2, wherein a first seal (16) is provided between the mounting member (13) and the lid body (11).

7. The battery pack according to claim 6, wherein the first seal (16) is a gasket or sealant.

8. Battery pack according to claim 1, characterized in that a second seal is provided between the access panel (12) and the cover (11).

9. The battery pack according to any one of claims 1 to 8, wherein the lower cover (2) includes a bottom plate (21) and front (22), rear (23), side (24) plates attached to the bottom plate (21), and the battery module (3) is bonded to the bottom plate (21).

10. Battery pack according to claim 9, characterized in that the front plate (22) and/or the rear plate (23) are connected with the battery module (3) by means of fasteners.