Overlap type energy storage battery pack

Abstract

The utility model discloses a lap joint type energy storage battery PACK bag, including bottom plate, the upper surface of bottom plate is equipped with battery module, the upper surface of bottom plate dismantles and installs cover shell, one side of cover shell is equipped with the hole, the fixed plate is dismantled and installed through bolt in the hole, bottom plate and cover shell surface are equipped with a plurality of coaxial screw holes, and the fixed bolt is threadedly connected in the screw hole, and the handle is dismantled and installed on both sides of cover shell. The utility model discloses through setting battery explosion -proof valve on the fixed plate, opens the pressure relief when the high pressure gas of abnormality is produced in the battery module, avoids the rupture or the safety accident of shell body because of the pressure is too high, and cover shell and bottom plate are detachably connected through fixed bolt, and the fixed plate is dismantled and installed through bolt with cover shell, and when the battery of subsequent maintenance or the conductive component of replacement only needs to be dismantled corresponding bolt to be fast operation.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage battery technology, specifically relating to a splicing type energy storage battery PACK. Background Technology

[0002] Energy storage battery packs typically consist of multiple batteries, which are combined to form a pack. These packs are then combined to achieve greater capacity. Therefore, the structure of the pack is fundamental to energy storage, and its performance and stability are crucial. With the rapid development of the new energy storage industry, energy storage battery packs, as the core carriers of energy storage and output, have seen their safety performance, ease of maintenance and operation, and energy transmission efficiency become key industry indicators. Existing energy storage battery packs often improve performance by optimizing internal conductive structures and casing protection designs, but they still suffer from insufficient functional adaptability, making it difficult to simultaneously meet the high demands of safety, maintenance, and transmission.

[0003] Patent CN223093054U discloses an energy storage battery pack, including a housing and a cover that fit together. The housing contains at least two battery packs, each containing at least two batteries. The positive terminals of the batteries within the same pack are connected by a single positive copper busbar, and the negative terminals are connected by a single negative copper busbar. The positive and negative copper busbars form an arch bridge structure, with the portion between the two connection points to the batteries higher than the portion at the connection points themselves. This energy storage battery pack, by designing the positive and negative copper busbars as an arch bridge structure with the portion between the two connection points higher than the portion at the connection points, reduces the impact of vibration during transportation on the pack, thus increasing safety.

[0004] The above technical solutions lack a safety protection structure. When high-pressure gas is generated inside the battery due to abnormalities such as short circuits or overcharging, the casing has no directional pressure relief channel, which can easily lead to casing rupture or more serious safety accidents. Disassembly is also cumbersome when maintaining the battery or replacing conductive components. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a stackable energy storage battery pack to overcome the technical defects of existing stackable energy storage battery packs.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The stackable energy storage battery pack includes a base plate with a battery module on the upper surface of the base plate. A cover is detachably installed on the upper surface of the base plate. A hole is provided on one side of the cover, and a fixing plate is detachably installed in the hole by bolts. Multiple coaxial threaded holes are provided on the surfaces of the base plate and the cover, and fixing bolts are threaded into the threaded holes. Handles are detachably installed on both sides of the cover.

[0008] The battery module consists of battery cells, sampling harness, end plate and side plate;

[0009] The handle has mounting holes at both ends. Fixing bolts pass through the mounting holes at both ends of the handle and connect with the threaded holes on both sides of the cover to fix the handle to both sides of the cover.

[0010] As a preferred embodiment of this utility model, two connecting blocks are installed at one end of the upper surface of the base plate, and the upper surfaces of the two connecting blocks are connected to the BMS main control box by another set of bolts.

[0011] As a preferred embodiment of this utility model, a battery explosion-proof valve is provided on one side of the fixing plate, an interface is provided on one side of the fixing plate, a conductive adapter plate is provided at one end of the interface, the conductive adapter plate is located on one side of the fixing plate, and an energy storage battery connector is provided at one end of the conductive adapter plate.

[0012] As a further embodiment of this utility model, the other end of the energy storage battery connector is located inside the fixing plate and is connected to a first overlapping conductive busbar by bolts. The first overlapping conductive busbar is connected to one end of the upper surface of the battery module.

[0013] As a further embodiment of this utility model, a conversion plate is connected between the energy storage battery connector and the conductive adapter plate.

[0014] As a further embodiment of this utility model, a second overlapping conductive busbar is bolted to one side of the conductive adapter plate, and the other end of the second overlapping conductive busbar is connected to one end of the upper surface of the battery module.

[0015] Compared with existing technologies, the overlapping type energy storage battery pack provided by this utility model has the following advantages:

[0016] This interlocking energy storage battery pack features a battery explosion-proof valve on the mounting plate. This valve opens to release pressure when high-pressure gas is abnormally generated inside the battery module, preventing the casing from rupturing due to excessive pressure or causing safety accidents. The cover and base plate are detachably connected by fixing bolts, and the mounting plate and cover are disassembled and installed by bolts. During subsequent battery maintenance or replacement of conductive components, only the corresponding bolts need to be removed for quick operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the base plate in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the battery module structure in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the conductive adapter plate in an embodiment of the present invention.

[0022] Figure label:

[0023] 1. Base plate; 101. Fixing bolts; 102. Connecting block; 103. BMS main control box;

[0024] 2. Cover; 201. Battery explosion-proof valve; 202. Interface; 203. Energy storage battery connector; 204. Conductive adapter plate; 205. Handle; 206. Adapter plate; 207. Fixing plate;

[0025] 3. Battery module; 301. First overlapping conductive busbar; 302. Second overlapping conductive busbar. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0028] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0029] See appendix Figures 1-4 As shown, this embodiment provides a stackable energy storage battery pack, including a base plate 1, a battery module 3 on the upper surface of the base plate 1, a cover 2 detachably installed on the upper surface of the base plate 1, a hole on one side of the cover 2, a fixing plate 207 detachably installed in the hole by bolts, multiple coaxial threaded holes on the surfaces of the base plate 1 and the cover 2, fixing bolts 101 are threadedly connected in the threaded holes, and handles 205 detachably installed on both sides of the cover 2.

[0030] Battery module 3 consists of battery cells, sampling harness, end plate and side plate.

[0031] The handle 205 has mounting holes at both ends. The fixing bolts 101 pass through the mounting holes at both ends of the handle 205 and connect with the threaded holes on both sides of the cover 2 to fix the handle 205 to both sides of the cover 2.

[0032] Two connecting blocks 102 are installed on one end of the upper surface of the base plate 1, and the upper surfaces of the two connecting blocks 102 are connected to the BMS main control box 103 by another set of bolts.

[0033] The handle 205, which adopts the above technical solution, is made of high-strength aluminum alloy material, which makes it easy to handle and install when using a stackable energy storage battery PACK.

[0034] The cover 2 provides dust and water protection for the internal battery module 3. The connection between the cover 2 and the base plate 1 is improved by the fixing bolts 101, which facilitates disassembly and assembly for subsequent maintenance. The BMS main control box 103 can collect the cell voltage in real time and adjust the charging and discharging circuit in real time to avoid cell damage or module failure.

[0035] See appendix Figures 1 to 4As shown, a battery explosion-proof valve 201 is provided on one side of the fixing plate 207, and an interface 202 is provided on the other side. A conductive adapter plate 204 is provided at one end of the interface 202, located on one side of the fixing plate 207. A storage battery connector 203 is provided at one end of the conductive adapter plate 204. The other end of the storage battery connector 203 is located inside the fixing plate 207 and is bolted to a first overlapping conductive busbar 301, which is connected to one end of the upper surface of the battery module 3. A conversion plate 206 connects the storage battery connector 203 and the conductive adapter plate 204. A second overlapping conductive busbar 302 is bolted to one side of the conductive adapter plate 204, and the other end of the second overlapping conductive busbar 302 is connected to one end of the upper surface of the battery module 3.

[0036] When an abnormality occurs and high-pressure gas is generated inside the battery module 3, the pressure is released by opening the battery explosion-proof valve 201 to prevent the internal pressure of the PACK from being too high and causing a safety accident. The interface 202 is connected to external power, which is transferred and conducted through the conductive adapter plate 204, and then transmitted to the first overlapping conductive busbar 301 by the energy storage battery connector 203. The first overlapping conductive busbar 301 transmits power to the cells inside the battery module 3 to achieve charging. During discharge, the power of the cells is reversed and output through the first overlapping conductive busbar 301, the energy storage battery connector 203, the conductive adapter plate 204, and the interface 202 to meet the external power demand. At the same time, the conductive adapter plate 204, together with the conversion plate 206, can optimize the power transmission signal. The bolt connection structure of the first overlapping conductive busbar 301 can reduce the contact resistance and ensure stable current conduction.

[0037] The battery module 3 is located on the upper surface of the base plate 1. The cover 2 is connected to the base plate 1 by fixing bolts 101. The handle 205 is fixed to both sides of the cover 2 by bolts. The fixing plate 207 is installed in the hole of the cover 2. When charging, external power is connected through the interface 202, converted by the conductive adapter plate 204, and transmitted through the first overlapping conductive busbar 301 and the second overlapping conductive busbar 302. The two power paths are transmitted to the battery cell in the battery module 3. When discharging, the battery cell power is output from the interface 202 in reverse through the above path. The conversion plate 206 works with the conductive adapter plate 204 to optimize the power transmission signal. The bolt connection structure of the overlapping conductive busbar reduces the contact resistance and ensures the current stability. The BMS main control box 103 regulates the charging and discharging circuit when it detects overcharging and over-discharging abnormalities. During maintenance, all components are connected by bolts. The components can be separated for battery maintenance or replacement of conductive components by disassembling the corresponding bolts.

[0038] In summary, the stackable energy storage battery pack of this utility model embodiment has a battery explosion-proof valve 201 installed on the fixing plate 207. When high pressure gas is abnormally generated in the battery module 3, it opens to release pressure, avoiding the shell from rupturing due to excessive pressure or causing safety accidents. The cover 2 and the base plate 1 are detachably connected by fixing bolts 101. The fixing plate 207 and the cover 2 are disassembled and installed by bolts. When maintaining the battery or replacing conductive components, only the corresponding bolts need to be removed for quick operation.

[0039] The above description illustrates the basic principles of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A stackable energy storage battery pack, comprising a base plate (1), wherein a battery module (3) is provided on the upper surface of the base plate (1), characterized in that: A cover shell (2) is detachably installed on the upper surface of the base plate (1). A hole is provided on one side of the cover shell (2), and a fixing plate (207) is detachably installed in the hole via bolts. Multiple coaxial threaded holes are provided on the surfaces of the base plate (1) and the cover shell (2), and fixing bolts (101) are threaded into the threaded holes. Handles (205) are detachably installed on both sides of the cover shell (2). The battery module (3) consists of a battery cell, a sampling harness, an end plate, and a side plate; The handle (205) has mounting holes at both ends. The fixing bolt (101) passes through the mounting holes at both ends of the handle (205) and connects with the threaded holes on both sides of the cover (2) to fix the handle (205) to both sides of the cover (2).

2. The stackable energy storage battery pack according to claim 1, characterized in that: Two connecting blocks (102) are installed on one end of the upper surface of the base plate (1), and the upper surfaces of the two connecting blocks (102) are connected to the BMS main control box (103) by another set of bolts.

3. The stackable energy storage battery pack according to claim 1, characterized in that: A battery explosion-proof valve (201) is provided on one side of the fixed plate (207), and an interface (202) is provided on one side of the fixed plate (207). A conductive adapter plate (204) is provided at one end of the interface (202). The conductive adapter plate (204) is located on one side of the fixed plate (207), and an energy storage battery connector (203) is provided at one end of the conductive adapter plate (204).

4. The stackable energy storage battery pack according to claim 3, characterized in that: The other end of the energy storage battery connector (203) is located inside the fixing plate (207) and is connected to a first overlapping conductive busbar (301) by bolts. The first overlapping conductive busbar (301) is connected to one end of the upper surface of the battery module (3).

5. The stackable energy storage battery pack according to claim 4, characterized in that: A conversion plate (206) is connected between the energy storage battery connector (203) and the conductive adapter plate (204).

6. The stackable energy storage battery pack according to claim 5, characterized in that: The conductive adapter plate (204) has a second overlapping conductive busbar (302) connected to one side by bolts, and the other end of the second overlapping conductive busbar (302) is connected to one end of the upper surface of the battery module (3).

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