High-capacity lithium battery pack

Abstract

The utility model discloses a high capacity lithium battery pack, including base, also include protection mechanism, the top of base is equipped with the protection mechanism, the protection mechanism includes shell, battery pack, mounting seat, gas generator, pressure plate and temperature sensor, the top of base is equipped with the shell, and the top of base is equipped with the battery pack, the mounting seat is equipped with the gas generator, the pressure plate is equipped with the gas generator, and the temperature sensor is equipped with the gas generator. When the battery pack is overheated, deflagrated and the like in the use process, the temperature sensor at the corresponding position monitors that the temperature change exceeds a limit value, the gas generator in the mounting seat at the corresponding position can be controlled to operate through an external controller, and high-pressure gas generated after the gas generator is electrified and ignited instantaneously presses the pressing plate downwards; and the pressing plate can generate instant impact force to impact the battery pack at the corresponding position, so that the faulted battery pack is opened and separated from the base, the influence on adjacent battery packs is avoided, and the loss and the maintenance cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packs, in particular to a large-capacity lithium battery pack. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive and negative electrode materials and non-aqueous electrolyte solutions. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream. A lithium battery pack refers to a battery pack that is made up of multiple lithium battery packs and has the characteristics of large capacity and long battery life.

[0003] Existing lithium battery packs have the following disadvantages when in use: Existing lithium battery packs, especially large-capacity lithium battery packs, usually have multiple lithium battery packs inside. In actual use, since the spacing between the lithium battery packs is very close, when accidents such as overheating and deflagration occur, it is easy to affect adjacent batteries, thereby causing a chain reaction, increasing the difficulty of firefighting, and increasing maintenance costs. For this reason, we propose a large-capacity lithium battery pack. Utility Model Content

[0004] The main purpose of the utility model is to provide a large-capacity lithium battery pack. By means of a protective mechanism arranged on the top of the base, when problems such as overheating and explosion occur, the battery packs at corresponding positions can be quickly separated and discharged to avoid affecting adjacent battery packs, thereby effectively solving the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A large-capacity lithium battery pack comprises a base and a protective mechanism, wherein the top of the base is provided with the protective mechanism, and the protective mechanism comprises a shell, a battery pack, a mounting seat, a gas generator, a pressure plate and a temperature sensor, the top of the base is matched with a shell and a battery pack is mounted on the top of the base, mounting seats are provided at positions corresponding to the top of the shell and the battery pack, and the top of the mounting seats is installed with a gas generator, and the bottom of the mounting seats is installed with a pressure plate corresponding to the position of the battery pack, and the pressure plate is installed inside a temperature sensor.

[0007] Furthermore, it also includes a supporting mechanism, the base is provided with a supporting mechanism inside, the supporting mechanism includes a support plate, a battery support and a connecting piece, the base is provided with a support plate inside and a battery support for supporting the battery pack is installed on the top of the support plate, and a connecting piece is installed between the support plate and the base; the base is provided with a support plate and a battery support for supporting the battery pack, the battery pack is installed inside the battery support and the battery support is placed on the top of the support plate, under normal working conditions, the connecting piece plays a connecting role at the connection of the support plate to maintain the stability of the position of the battery pack, and a tearing groove structure is provided at the connection so that when the protective mechanism is working, the instantaneous air pressure shock generated can cause the connection end of the support plate to be disconnected and separated along the tearing groove, thereby ensuring the discharge of the battery.

[0008] Furthermore, a spring is installed between the top of the mounting seat and the pressure plate, and a battery connecting piece is installed at the bottom of the pressure plate in contact with the end of the battery pack; the spring plays a connecting role at the connecting position, and the battery connecting piece performs a conductive role.

[0009] Furthermore, rubber pads are bonded at the connections between the outer wall of the pressure plate and the inner wall of the mounting seat; the rubber pads at the connections can ensure the sealing of the connections, thereby ensuring that the gas pressure can push the pressure plate downward when the gas generator is running.

[0010] Furthermore, a tearing groove is provided at the connection between the support plate and the base near the connection piece; the tearing groove structure can ensure that the connection of the support plate can be disconnected smoothly in an emergency.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the battery pack is placed on the top of the base and covered by the shell, the battery pack is divided into different areas inside the base, the shell protects the battery pack under normal conditions, the end of the battery pack contacts the battery connecting piece to supply power normally, the temperature sensor can monitor the working temperature of the battery pack at the corresponding position in real time, when the battery pack is overheated, exploded, etc. during use, the temperature sensor at the corresponding position detects that the temperature change exceeds the limit value, and the gas generator inside the mounting seat at the corresponding position can be controlled by an external controller to operate, and the high-pressure gas generated after the gas generator is powered on and ignited is instantly discharged. The pressure plate is pressed so that the pressure plate can generate an instantaneous impact force to impact the battery pack at the corresponding position, thereby breaking the faulty battery pack apart from the base, avoiding impact on adjacent battery packs, and reducing losses and maintenance costs; a pallet and a battery tray are arranged inside the base to support the battery pack, the battery pack is installed inside the battery tray and the battery tray is placed on the top of the pallet, under normal working conditions, the connecting piece plays a connecting role at the pallet connection to maintain the stability of the battery pack position, and a tearing groove structure is provided at the connection so that when the protective mechanism is working, the instantaneous air pressure shock generated can cause the pallet connection end to disconnect and separate along the tearing groove, thereby ensuring the discharge of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the overall structure of a large-capacity lithium battery pack.

[0013] Figure 2 The utility model is a schematic diagram of the internal structure of a mounting base for a large-capacity lithium battery pack.

[0014] Figure 3 The utility model is a schematic diagram of the supporting mechanism structure of a large-capacity lithium battery pack.

[0015] In the figure: 1. base; 2. protective mechanism; 201. shell; 202. battery pack; 203. mounting seat; 204. gas generator; 205. spring; 206. pressure plate; 207. battery connecting piece; 208. temperature sensor; 209. rubber pad; 3. supporting mechanism; 301. support plate; 302. battery support; 303. connecting piece; 304. tear groove. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] like Figure 1-3 As shown, a large-capacity lithium battery pack includes a base 1 and a protection mechanism 2. The protection mechanism 2 is arranged on the top of the base 1, and the protection mechanism 2 includes a shell 201, a battery pack 202, a mounting seat 203, a gas generator 204, a pressure plate 206 and a temperature sensor 208. The top of the base 1 is equipped with a shell 201 and the battery pack 202 is installed on the top of the base 1. The top of the shell 201 and the corresponding position of the battery pack 202 are provided with mounting seats 203, and the top of the mounting seats 203 are installed with gas generators 204. The bottom of the mounting seats 203 is installed with pressure plates 206 corresponding to the position of the battery pack 202, and the pressure plates 206 are installed with temperature sensors 208.

[0018] Wherein, it also includes a supporting mechanism 3, the supporting mechanism 3 is arranged inside the base 1, the supporting mechanism 3 includes a support plate 301, a battery support 302 and a connecting piece 303, the support plate 301 is arranged inside the base 1, and the battery support 302 for supporting the battery pack 202 is installed on the top of the support plate 301, and the connecting piece 303 is installed between the support plate 301 and the base 1; the support plate 301 and the battery support 302 are arranged inside the base 1 to support the battery pack 202, the battery pack 202 is installed inside the battery support 302 and the battery support 302 is placed on the top of the support plate 301, under normal working conditions, the connecting piece 303 plays a connecting role at the connection of the support plate 301 to keep the position of the battery pack 202 stable, and a tear groove 304 structure is opened at the connection so that when the protective mechanism 2 is working, the instantaneous air pressure shock generated can make the connection end of the support plate 301 disconnect and separate along the tear groove 304, thereby ensuring the discharge of the battery.

[0019] Among them, a spring 205 is installed between the top of the inner part of the mounting seat 203 and the pressure plate 206, a battery connecting piece 207 is installed at the bottom of the pressure plate 206 and the contact position with the end of the battery pack 202, and a rubber pad 209 is bonded at the connection between the outer wall of the pressure plate 206 and the inner wall of the mounting seat 203; the spring 205 plays a connecting role at the connection position, the battery connecting piece 207 performs a conductive role, and the rubber pad 209 located at the connection can ensure the sealing of the connection, thereby ensuring that the gas pressure can push the pressure plate 206 downward when the gas generator 204 is running.

[0020] A tearing groove 304 is provided at the connection between the support plate 301 and the base 1 near the connection piece 303 ; the tearing groove 304 structure can ensure that the connection of the support plate 301 can be disconnected smoothly in an emergency.

[0021] It should be noted that the utility model is a large-capacity lithium battery pack. When in use, the battery pack 202 is placed on the top of the base 1 and is covered by the shell 201. The battery pack 202 is divided into different areas inside the base 1. Under normal conditions, the shell 201 protects the battery pack 202. The end of the battery pack 202 contacts the battery connecting piece 207 to supply power normally. The temperature sensor 208 can monitor the working temperature of the battery pack 202 at the corresponding position in real time. When the battery pack 202 is overheated or explodes during use, the temperature sensor 208 at the corresponding position detects that the temperature change exceeds the limit value, and the gas generator 204 inside the mounting seat 203 at the corresponding position can be controlled by an external controller to operate. After the gas generator 204 is powered on and ignited, the high-pressure gas generated instantly presses down the pressure plate 2 06, so that the pressure plate 206 can generate an instantaneous impact force to impact the battery pack 202 at the corresponding position, thereby breaking the faulty battery pack 202 apart from the base 1, avoiding affecting the adjacent battery pack 202, and reducing losses and maintenance costs; the base 1 is provided with a support plate 301 and a battery tray 302 inside to support the battery pack 202, the battery pack 202 is installed inside the battery tray 302 and the battery tray 302 is placed on the top of the support plate 301, under normal working conditions, the connecting piece 303 plays a connecting role at the connection of the support plate 301 to maintain the stability of the position of the battery pack 202, and a tear groove 304 structure is provided at the connection so that when the protective mechanism 2 is working, the instantaneous air pressure shock generated can cause the connection end of the support plate 301 to be disconnected and separated along the tear groove 304, thereby ensuring the discharge of the battery.

[0022] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A large-capacity lithium battery pack, comprising a base (1), characterized in that: The invention also comprises a protection mechanism (2), wherein the top of the base (1) is provided with the protection mechanism (2), and the protection mechanism (2) comprises a shell (201), a battery pack (202), a mounting seat (203), a gas generator (204), a pressure plate (206), and a temperature sensor (208); the top of the base (1) is provided with a shell (201) and a battery pack (202) is mounted on the top of the base (1); a mounting seat (203) is provided at a position corresponding to the top of the shell (201) and the battery pack (202), and a gas generator (204) is mounted at the top of the mounting seat (203); a pressure plate (206) corresponding to the position of the battery pack (202) is mounted at the bottom of the mounting seat (203), and a temperature sensor (208) is mounted inside the pressure plate (206).

2. A large-capacity lithium battery pack according to claim 1, characterized in that: The invention also comprises a supporting mechanism (3), wherein the supporting mechanism (3) is arranged inside the base (1), and the supporting mechanism (3) comprises a supporting plate (301), a battery holder (302) and a connecting piece (303); the supporting plate (301) is arranged inside the base (1), and a battery holder (302) for supporting a battery pack (202) is installed on the top of the supporting plate (301); and a connecting piece (303) is installed between the supporting plate (301) and the base (1).

3. A large-capacity lithium battery pack according to claim 1, characterized in that: A spring (205) is installed between the top end of the mounting seat (203) and the pressing plate (206), and a battery connecting piece (207) is installed at the bottom of the pressing plate (206) at a position in contact with the end of the battery pack (202).

4. A large-capacity lithium battery pack according to claim 1, characterized in that: Rubber pads (209) are bonded to the connection points between the outer wall of the pressing plate (206) and the inner wall of the mounting seat (203).

5. A large-capacity lithium battery pack according to claim 2, characterized in that: A tearing groove (304) is provided at the connection between the support plate (301) and the base (1) near the connection piece (303).

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