Explosion-proof lithium ion storage battery power supply

Abstract

The utility model discloses an explosion-proof lithium ion storage battery power supply which comprises a power supply box, a shell of the power supply box is made of a steel plate, a plurality of cavities including battery mounting cavities are formed in the shell of the power supply box through vertical steel partition plates which are transversely and longitudinally welded, and a plurality of battery mounting grids are formed in the battery mounting cavities. A plurality of lithium ion batteries are mounted in each battery mounting grid, and all the lithium ion batteries in the battery mounting cavity are connected in series to form a lithium ion battery pack; the top of the part, corresponding to the battery installation cavity, of the power box is provided with an anti-explosion breathing drain valve which can be automatically opened to release internal pressure and prevent the power box from exploding when the pressure in the battery installation cavity reaches or exceeds a limit value, and the partial or whole surface of a shell of the part, corresponding to the battery installation cavity, of the power box is in a corrugated shape. According to the utility model, the defects of insufficient shell strength, poor heat dissipation effect, poor explosion-proof performance, potential safety hazard, small deformation resistance and the like of the lithium ion storage battery power supply of the existing mining rubber-tyred vehicle are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion storage battery power supply, in particular to a flameproof lithium ion storage battery power supply. Background Art

[0002] At present, the shell strength of lithium-ion battery power sources used in common mining rubber-wheeled vehicles is insufficient, and it is easily damaged by external impact. At the same time, the heat dissipation effect is poor, which can easily lead to battery overheating, reducing battery life and performance, and the explosion-proof performance is poor, posing a safety hazard. The commonly used structure of reinforcing bars outside the shell has disadvantages such as low deformation resistance. Utility Model Content

[0003] The utility model aims to provide a flameproof lithium-ion battery power source to solve the problems existing in the above-mentioned prior art.

[0004] The technical solution of this application is as follows:

[0005] A flameproof lithium-ion storage battery power source comprises a power supply box, the outer shell of the power supply box is made of steel plate, a plurality of cavities including a battery installation cavity are formed in the outer shell of the power supply box by horizontally and longitudinally welding vertically erected steel partitions, and a plurality of battery installation grids are formed in the battery installation cavity, each battery installation grid is equipped with a plurality of lithium-ion batteries, and all the lithium-ion batteries in the battery installation cavity are connected in series to form a lithium-ion battery pack, an explosion-proof breathing drain valve is installed on the top of the part of the power supply box corresponding to the battery installation cavity, which can automatically open and release the internal pressure to prevent the power supply box from exploding when the pressure in the battery installation cavity reaches or exceeds a limit value, and a part or all of the surface of the outer shell of the part of the power supply box corresponding to the battery installation cavity is corrugated.

[0006] Furthermore, the power box is provided with a main power circuit isolating switch for cutting off the main power circuit when necessary to improve the safety of the power box. The operating end of the main power circuit isolating switch is flameproof mounted on the side wall of the power box, and its operating handle or knob or button is placed outside the power box.

[0007] Furthermore, an insulating partition is provided in the battery installation grid for isolating the battery housing from the power box and the battery housing from the steel partition to prevent the power box from being charged.

[0008] Preferably, the surfaces of the side panels and the upper cover of the outer shell of the power box corresponding to the battery installation cavity are corrugated.

[0009] Preferably, the steel partitions forming the multiple battery installation grids in the battery installation cavity are parallel to each other.

[0010] Preferably, the flameproof lithium-ion battery power source adopts an externally controlled charging mode. When in use, multiple flameproof lithium-ion battery power sources are connected in series or / and in parallel, and the charging is controlled by a unified charging interface of the electrical equipment using the power source.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The shell of the power box is formed with multiple cavities including a battery installation cavity by horizontally and longitudinally welding vertical steel partitions, and multiple battery installation grids are formed in the battery installation cavity. On the one hand, this improves the static pressure strength and external impact resistance of the power box shell, and when pressure is generated in the battery installation cavity due to abnormal conditions such as battery fire and combustion, the force on the welded steel plate in the shell is tensile, so the deformation resistance of the shell is significantly increased compared with the shell with only external reinforcement, and the explosion-proof performance is also better; on the other hand, multiple battery installation grids increase the heat transfer area and improve the heat dissipation efficiency, the batteries therein are not easy to overheat, and the battery life and performance are better guaranteed; the explosion-proof breathing drain valve installed on the top of the part of the power box corresponding to the battery installation cavity further improves the explosion-proof performance and safety of the power box; the partial or entire surface of the shell of the part of the power box corresponding to the battery installation cavity is corrugated, which further improves the strength and external impact resistance of the shell, while increasing the heat dissipation area and improving the heat dissipation efficiency.

[0013] 2. The main power circuit isolation switch on the left or right side of the power box can cut off the main power circuit when necessary, further improving the safety of the power box.

[0014] 3. The insulating partition installed in the battery installation grid can prevent the power box from being charged, thus improving the safety and reliability of the power box.

[0015] In summary, the explosion-proof lithium-ion battery power source provided by the utility model has the advantages of high shell strength, good resistance to external impact, large deformation resistance, good heat dissipation effect, good explosion-proof performance, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main view of the explosion-proof lithium-ion battery power supply of the embodiment of the utility model;

[0017] Figure 2 yes Figure 1 A schematic top view of a flameproof lithium-ion battery power source is shown;

[0018] Figure 3 yes Figure 1 The right side schematic diagram of the flameproof lithium-ion battery power supply shown;

[0019] Figure 4 yes Figure 1AA cross-sectional schematic diagram of the flameproof lithium-ion battery power source shown;

[0020] In the figure: 1. power box; 11. battery installation cavity; 12. first transition cavity; 13. second transition cavity; 14. wiring cavity; 15. upper cover plate; 2. steel partition; 3. lithium-ion battery; 4. main power circuit isolation switch; 41. operating handle; 5. signal acquisition module; 6. management system group; 7. insulating partition. DETAILED DESCRIPTION

[0021] The flameproof lithium-ion battery power supply of the present invention is further described below in conjunction with the accompanying drawings.

[0022] like Figure 1As shown, the flameproof lithium-ion battery power supply of this embodiment includes a power box 1, the shell of the power box 1 is made of steel plate, and the shell of the power box 1 is formed by a steel partition 2 vertically and horizontally welded to form a plurality of cavities including a battery installation cavity 11, a first transition cavity 12, a second transition cavity 13 and a wiring cavity 14, and a plurality of battery installation grids are formed in the battery installation cavity 11, the first transition cavity 12 is adjacent to and communicates with the battery installation cavity 11, and the second transition cavity 13 and the wiring cavity 14 are adjacent to the first transition cavity 12 and are both installed on the steel partition 2 through flameproof. The wiring terminal is connected to the first transition chamber 12, the wiring chamber 14 is adjacent to the second transition chamber 13 and is connected through the wiring terminal installed on the flameproof steel partition 2, and a plurality of lithium-ion batteries 3 are installed in each battery installation grid. The lithium-ion battery 3 of this embodiment adopts a rectangular lithium-ion battery with a single nominal voltage of 3.2V and a nominal capacity of 100AH. All lithium-ion batteries 3 in the battery installation cavity 11 are connected in series to form a lithium-ion battery pack. The top of the power box 1 corresponding to the battery installation cavity 11 is equipped with a pressure-resistant Or when the pressure exceeds the limit value, it can automatically open, release the internal pressure, and prevent the power box from exploding. The explosion-proof breathing drain valve of this embodiment adopts the explosion-proof breathing drain valve model TLW-I6L-I1.1 (belonging to Class I pressure relief device). The partial or entire surface of the outer shell of the power box 1 corresponding to the battery installation cavity 11 is corrugated. The first transition cavity 12 is equipped with a main power circuit isolating switch 4 and a signal acquisition module 5. The operating end of the main power circuit isolating switch 4 is flameproof mounted on the side wall of the power box 1, and its operating handle 41 is placed outside the power box 1. The main power circuit isolating switch 4 is used to cut off the main power circuit when necessary and improve the safety of the power box. The signal acquisition module 5 is used to collect the voltage, current, temperature and other signals of each battery with the cooperation of the sensor (if necessary) and perform calculation processing. The second transition cavity 13 is equipped with a management system group 6. The management system group 6 is connected to the signal output terminal of the signal acquisition module 5 through a cable. The management system group 6 is used to analyze and process the collected data transmitted by the signal acquisition module 5 and perform judgment, early warning, protection actions, etc.

[0023] Furthermore, an insulating partition 7 is provided in the battery installation grid for isolating the battery housing from the power box 1 and the battery housing from the steel partition 2 to prevent the power box from being charged.

[0024] Preferably, the surface of the side panels and the upper cover plate 15 of the outer shell of the power box 1 corresponding to the battery installation cavity is corrugated.

[0025] Preferably, the steel partitions 2 forming a plurality of battery installation grids in the battery installation cavity 11 are parallel to each other.

[0026] Preferably, the flameproof lithium-ion battery power supply adopts an externally controlled charging mode. When in use, multiple flameproof lithium-ion battery power supplies are connected in series and / or in parallel, and the charging is controlled by a unified charging interface of the electrical equipment using the power supply (including but not limited to electric rubber-wheeled vehicles for mining).

[0027] The explosion-proof lithium-ion battery power source provided by the utility model has the advantages of high shell strength, good resistance to external impact, large deformation resistance, good heat dissipation effect, good explosion-proof performance, safety and reliability, etc., eliminating the shortcomings of the lithium-ion battery power source used in the existing mining rubber-wheeled vehicles, such as insufficient shell strength, poor heat dissipation effect, poor explosion-proof performance, potential safety hazards, and low deformation resistance.

[0028] The embodiments described above are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made without departing from the design spirit of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A flameproof lithium-ion battery power source, comprising a power box, the shell of which is made of steel plate, characterized in that: The outer shell of the power box is formed with multiple cavities including a battery installation cavity by horizontally and vertically welding upright steel partitions, and multiple battery installation grids are formed in the battery installation cavity. Each battery installation grid is equipped with a number of lithium-ion batteries, and all the lithium-ion batteries in the battery installation cavity are connected in series to form a lithium-ion battery pack. An explosion-proof breathing drain valve is installed on the top of the part of the power box corresponding to the battery installation cavity, which can automatically open and release the internal pressure to prevent the power box from exploding when the pressure in the battery installation cavity reaches or exceeds a limit value. The outer shell of the power box corresponding to the battery installation cavity has a partial or entire surface in a corrugated shape.

2. The flameproof lithium-ion battery power source according to claim 1, characterized in that: The power box is provided with a main power circuit isolating switch for cutting off the main power circuit when necessary to improve the safety of the power box. The operating end of the main power circuit isolating switch is flameproof mounted on the side wall of the power box, and its operating handle or knob or button is placed outside the power box.

3. The flameproof lithium-ion battery power source according to claim 1, characterized in that: The battery installation grid is provided with an insulating partition for isolating the battery housing from the power box and the battery housing from the steel partition to prevent the power box from being electrified.

4. The flameproof lithium-ion battery power source according to claim 1, characterized in that: The surfaces of the side plates and the upper cover plate of the outer shell of the power box corresponding to the battery installation cavity are corrugated.

5. The flameproof lithium-ion battery power source according to claim 1, characterized in that: The steel partitions forming a plurality of battery installation grids in the battery installation cavity are parallel to each other.

6. The flameproof lithium-ion battery power source according to claim 1, characterized in that: It adopts an externally controlled charging mode. When in use, multiple flameproof lithium-ion battery power sources are connected in series or / and in parallel, and the charging is controlled by a unified charging interface of the electrical equipment using the power source.

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