Explosion-proof lithium battery

Abstract

The invention relates to the technical field of lithium batteries, and discloses an explosion-proof lithium battery which comprises a shell assembly, a battery control panel is embedded in the outer wall of one side of the shell assembly, a heat dissipation assembly is fixedly assembled on the outer wall of the other side of the shell assembly, and a battery body is clamped in an inner cavity of the shell assembly. Connecting seats are fixedly assembled at the positive end and the negative end of the battery main body, and the power input end of the battery control panel is electrically connected with the connecting seats. The compressed insulating oil in the inner cavity of the compression bottle body is conveyed into the sealing bag, so that the sealing bag expands towards one side close to the battery main body, the space between the isolation plate and the inner cavity of the shell is reduced, and the insulating oil in the isolation plate and the inner cavity of the shell is extruded into the inner cavity of the battery main body under the expansion of the sealing bag; the positive and negative battery pieces in the inner cavity of the battery main body are coated with the insulating oil, so that the positive and negative battery pieces are insulated through the insulating oil, and the problem that the battery main body is heated to expand and burn due to the fact that the battery main body further releases positive and negative ions is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, in particular to an explosion-proof lithium battery. Background Art

[0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. 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.

[0003] When a lithium battery spontaneously combusts or explodes, rescue and emergency relief can generally only be carried out through external fire-fighting tools. Existing lithium batteries do not have a structure to prevent lithium batteries from spontaneously combusting or even exploding. Summary of the invention

[0004] The present invention provides an explosion-proof lithium battery, which solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solution: an explosion-proof lithium battery, comprising a shell component, an outer wall of one side of the shell component is inlaid with a battery control panel, an outer wall of the other side of the shell component is fixedly equipped with a heat dissipation component, an inner cavity of the shell component is clamped with a battery body, positive and negative ends of the battery body are fixedly equipped with a connecting seat, and a power input end of the battery control panel is electrically connected to the connecting seat.

[0006] As a preferred technical solution of the present invention: the shell component includes a shell, and isolation chambers are fixedly installed on both sides of the inner wall of the shell near one end of the battery control panel, and isolation plates are fixedly installed on both sides of the shell near one end of the heat dissipation component. The two groups of battery bodies are located in the space formed by the two groups of isolation plates and the shell, and buffer sponges are fixedly installed on the inner walls of both sides of the shell, and a sealing bag is bonded to the inner wall of the buffer sponge one, and buffer sponge two is fixedly installed on the inner wall of one end of the shell near the heat dissipation component, and a fixing plate is fixedly installed on the top of the isolation plate, a compression bottle body is clamped between the two groups of isolation plates, and a temperature sensor is provided on one side of the two groups of isolation plates near the battery body.

[0007] As a preferred technical solution of the present invention: the fixing plate is located on the top of the battery body, the battery body is abutted by buffer sponge 1 and buffer sponge 2, and the buffer sponge 1 and buffer sponge 2 are both provided with flow grooves on one side close to the battery body.

[0008] As a preferred technical solution of the present invention: the space formed by the isolation plate and the shell is filled with insulating oil, and the discharge end of the compression bottle is connected to the inner cavity of the two groups of sealing bags;

[0009] The compression bottle body includes an electronic sealing valve for controlling the discharge of liquid from the compression bottle body, and the electronic sealing valve is electrically connected to a battery control panel, and the battery control panel includes a backup power supply.

[0010] As a preferred technical solution of the present invention: the density of the insulating oil is greater than the density of the electrolyte, the two groups of isolation chambers are connected to the space formed by the two groups of isolation plates and the shell through connecting pipes, and the connecting pipes are located at the bottom of the isolation chambers;

[0011] A one-way valve is provided at the connection point between the isolation chamber and the connecting pipe and at the top of the isolation chamber.

[0012] As a preferred technical solution of the present invention: the heat dissipation component includes a connecting shell, a liquid pump is fixedly installed on the bottom inner wall of the connecting shell, an end of the liquid pump is fixedly installed with one end of a heat dissipation fin, and the other end of the heat dissipation fin is fixedly installed with a discharge pipe, the two input ends of the liquid pump are respectively connected to the cavity formed by two groups of isolation plates and the shell, the two groups of discharge pipes are respectively connected to the cavity formed by two groups of isolation plates and the shell, a heat dissipation fan is arranged on the top of the liquid pump, a cover plate is fixedly installed on the outer wall of the connecting shell on one side away from the outer shell component, an air inlet is provided on the outer wall opposite to the cover plate and the heat dissipation fan, and air outlets are provided on the outer walls on both sides of the cover plate.

[0013] A conductive plate is disposed on the top of the battery body, the battery body is composed of a plurality of battery cells, and the plurality of battery cells are electrically connected through the conductive plate;

[0014] The outer wall of the conductive plate is respectively sleeved with a limit plate and a cutting plate, the bottom of the limit plate and the cutting plate are fixedly equipped with a base, and the inner cavity of the cutting plate is connected with a conduit;

[0015] The cutting plate is in a retracted state.

[0016] The present invention has the following beneficial effects:

[0017] 1. The explosion-proof lithium battery is connected through the discharge end of the compression bottle body and the inner cavity of the two groups of sealing bags, and the compression bottle body is controlled by the battery control panel, so that the insulating oil compressed in the inner cavity of the compression bottle body is transmitted to the sealing bag, and the sealing bag is arranged on the inner wall of the buffer sponge, so that the sealing bag expands toward the side close to the battery body, thereby reducing the space of the isolation plate and the inner cavity of the shell, so that the insulating oil in the isolation plate and the inner cavity of the shell is squeezed into the inner cavity of the battery body by the expansion of the sealing bag, and the positive and negative battery cells in the inner cavity of the battery body are coated with the insulating oil, so that the positive and negative battery cells are insulated by the insulating oil, so as to prevent the battery body from further releasing positive and negative ions and causing the battery body to expand and burn due to heat;

[0018] At the same time, the electrolyte overflowing from the battery body will be deposited below the insulating oil due to its density, and the liquid at the bottom is transferred to the inner cavity of the isolation chamber through the one-way valve and the connecting pipe;

[0019] By separating the electrolyte into an isolation chamber, the electrolyte and the battery body are separated, reducing the possibility of combustion of the battery body. At the same time, the electrolyte is sealed by the isolation chamber to prevent the electrolyte from contacting with air, thus solving the problem of electrolyte overflow causing the electrolyte to contact with oxygen and causing the electrolyte to burn.

[0020] 2. The explosion-proof lithium battery transfers the insulating oil in the cavity formed by the two groups of isolation plates and the shell to the heat dissipation fins through a liquid pump, and transfers it back to the cavity formed by the two groups of isolation plates and the shell through a discharge pipe. The heat dissipation fan is operated, and the air adsorbed at the air inlet is discharged through the air outlet, so that the air dissipates the heat of the heat dissipation fins.

[0021] 3. The explosion-proof lithium battery is connected to the inner cavity of the cutting plate through a conduit. When the cutting plate is in a contracted state and the sealing bag expands toward the side close to the battery body, thereby reducing the space in the inner cavity of the isolation plate and the shell, the insulating oil in the inner cavity of the isolation plate and the shell is squeezed into the inner cavity of the cutting plate through the conduit by the expansion of the sealing bag, so that the cutting plate changes from a contracted state to a telescopic state;

[0022] By limiting the conductive plate with the limiting plate, the cutting plate can cut the conductive plate through the limiting plate, thereby eliminating the electrical connection between the plurality of battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of the battery of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the connecting seat of the present invention;

[0026] Figure 4It is a schematic diagram of the structure of the housing assembly of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of a buffer sponge according to the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the heat dissipation component of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the compression bottle of the present invention;

[0030] Figure 8 This is a schematic diagram of the sealing bag structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the conductive plate of the present invention;

[0032] Fig.10 It is a schematic diagram of a cutting board of the present invention.

[0033] In the figure: 1. Shell assembly; 2. Battery control panel; 3. Heat dissipation assembly; 4. Battery body; 5. Connecting seat;

[0034] 101, shell; 102, isolation chamber; 103, isolation plate; 104, buffer sponge 1; 105, buffer sponge 2; 106, fixing plate; 107, sealing bag; 108, compression bottle;

[0035] 301, connecting shell; 302, liquid pump; 303, heat dissipation fin; 304, exhaust pipe; 305, cooling fan; 306, cover plate; 307, air inlet; 308, air outlet;

[0036] 41. Conductive plate; 42. Limiting plate; 43. Cutting plate; 44. Base; 45. Conduit. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1 - Fig.10 A explosion-proof lithium battery comprises a shell component 1, a battery control panel 2 is inlaid on one side outer wall of the shell component 1, a heat dissipation component 3 is fixedly mounted on the other side outer wall of the shell component 1, a battery body 4 is clamped in the inner cavity of the shell component 1, and a connecting seat 5 is fixedly mounted on the positive and negative ends of the battery body 4, and a power input end of the battery control panel 2 is electrically connected to the connecting seat 5.

[0039] In a preferred embodiment: the outer shell component 1 includes a shell 101, and isolation chambers 102 are fixedly installed on both sides of the inner wall of the shell 101 near the battery control panel 2, and isolation plates 103 are fixedly installed on both sides of the shell 101 near the heat dissipation component 3. The two groups of battery bodies 4 are located in the space formed by the two groups of isolation plates 103 and the shell 101, and buffer sponges 104 are fixedly installed on the inner walls of both sides of the shell 101. The inner wall of the buffer sponge 104 is bonded with a sealing bag 107, and the inner wall of the shell 101 near the heat dissipation component 3 is fixedly installed with buffer sponge 2 105, and the top of the isolation plate 103 is fixedly installed with a fixing plate 106, and a compression bottle body 108 is clamped between the two groups of isolation plates 103. Temperature sensors are provided on one side of the two groups of isolation plates 103 near the battery body 4.

[0040] In the above structure, the battery body 4 is isolated by the isolation plate 103, so that the battery body 4 is located in an independent space in the inner cavity of the housing assembly 1, and the battery body 4 is fixed by the fixing plate 106 so that the battery body 4 does not shake;

[0041] The temperature sensors disposed on one side of the two isolation plates 103 close to the battery body 4 enable the battery control panel 2 to detect the state of the battery body 4 through the temperature sensors.

[0042] In a preferred embodiment: the fixing plate 106 is located on the top of the battery body 4, the battery body 4 is abutted by the buffer sponge 104 and the buffer sponge 2 105, and the buffer sponge 104 and the buffer sponge 2 105 are both provided with flow grooves on one side close to the battery body 4.

[0043] In a preferred embodiment: the space formed by the isolation plate 103 and the housing 101 is filled with insulating oil, and the discharge end of the compression bottle 108 is connected to the inner cavity of the two sets of sealing bags 107;

[0044] The compression bottle 108 includes an electronic sealing valve for controlling the discharge of liquid from the compression bottle 108 , and the electronic sealing valve is electrically connected to the battery control panel 2 , and the battery control panel 2 includes a backup power supply.

[0045] In the above structure, the buffer sponge 104 and the buffer sponge 2 105 are used to abut the battery body 4, so that when the battery body 4 shakes, the buffer sponge 104 and the buffer sponge 2 105 can be used for shock absorption to prevent the battery body 4 from colliding with the outer shell component 1 to a large extent, and the flow grooves opened on the side of the buffer sponge 104 and the buffer sponge 2 105 close to the battery body 4 can make the insulating oil filled in the space between the isolation plate 103 and the shell 101 circulate, thereby achieving the effect of cooling the battery body 4;

[0046] On the other hand, the battery control panel 2 detects the state of the battery body 4 through the temperature sensor. When the battery body 4 is broken, the value detected by the temperature sensor increases, and the discharge end of the compression bottle 108 is connected to the inner cavity of the two groups of sealing bags 107. The battery control panel 2 is used to control the compression bottle 108, so that the insulating oil compressed in the inner cavity of the compression bottle 108 is transmitted to the sealing bag 107. The sealing bag 107 is set on the inner wall of the buffer sponge 104, so that the sealing bag 107 expands toward the side close to the battery body 4, thereby reducing the space of the isolation plate 103 and the inner cavity of the shell 101, so that the insulating oil in the inner cavity of the isolation plate 103 and the shell 101 is squeezed into the inner cavity of the battery body 4 by the expansion of the sealing bag 107, and the positive and negative battery cells in the inner cavity of the battery body 4 are coated with the insulating oil, so that the positive and negative battery cells are insulated by the insulating oil, so as to prevent the battery body 4 from further releasing positive and negative ions and causing the battery body 4 to expand and burn due to heat;

[0047] The battery control panel 2 has a backup power supply, so that when the battery main body 4 is damaged, the battery control panel 2 can achieve control through the backup power supply.

[0048] In a preferred embodiment, the density of the insulating oil is greater than that of the electrolyte, and the two groups of isolation chambers 102 are connected to the space formed by the two groups of isolation plates 103 and the housing 101 through connecting pipes, and the connecting pipes are located at the bottom of the isolation chambers 102;

[0049] A one-way valve is provided at the connection between the isolation chamber 102 and the connecting pipe and at the top of the isolation chamber 102 .

[0050] In the above structure, the density of the insulating oil is greater than that of the electrolyte. When the battery body 4 is broken, the electrolyte inside the battery body 4 will be deposited below the insulating oil due to the influence of density, and the connecting pipe is located at the bottom of the isolation chamber 102, so that the liquid at the bottom is transmitted to the inner cavity of the isolation chamber 102 through the one-way valve and the connecting pipe, and the air in the inner cavity of the isolation chamber 102 is discharged through the one-way valve located at the top of the isolation chamber 102;

[0051] By separating the electrolyte into the isolation chamber 102, the electrolyte and the battery body 4 are separated, thereby reducing the possibility of combustion of the battery body 4. At the same time, the electrolyte is sealed by the isolation chamber 102 so that the electrolyte does not contact with the air, thereby solving the problem of electrolyte overflow causing the electrolyte to contact with oxygen and thus causing the electrolyte to burn.

[0052] Specifically, the compressed liquid in the inner cavity of the compression bottle 108 is transferred to the sealing bag 107, so that the sealing bag 107 squeezes the insulating oil in the inner cavity of the isolation plate 103 and the shell 101, so that the mixed liquid at the bottom of the inner cavity of the isolation plate 103 and the shell 101 is transferred to the inner cavity of the isolation chamber 102 through the connecting pipe.

[0053] In a preferred embodiment: the heat dissipation component 3 includes a connecting shell 301, the bottom inner wall of the connecting shell 301 is fixedly equipped with a liquid pump 302, the discharge end of the liquid pump 302 is fixedly equipped with one end of a heat dissipation fin 303, and the other end of the heat dissipation fin 303 is fixedly equipped with a discharge pipe 304, the two input ends of the liquid pump 302 are respectively connected to the cavity formed by the two groups of isolation plates 103 and the shell 101, the two groups of discharge pipes 304 are respectively connected to the cavity formed by the two groups of isolation plates 103 and the shell 101, a heat dissipation fan 305 is arranged on the top of the liquid pump 302, and a cover plate 306 is fixedly equipped on the outer wall of the connecting shell 301 on one side away from the outer shell component 1, an air inlet 307 is provided on the outer wall opposite to the cover plate 306 and the heat dissipation fan 305, and an air outlet 308 is provided on the outer wall on both sides of the cover plate 306.

[0054] In the above structure, the insulating oil in the cavity formed by the two groups of isolation plates 103 and the shell 101 is transferred to the heat dissipation fins 303 through the liquid pump 302, and is transferred back to the cavity formed by the two groups of isolation plates 103 and the shell 101 through the exhaust pipe 304. The heat dissipation fan 305 is operated, and the air adsorbed at the air inlet 307 is discharged through the air outlet 308, so that the air dissipates the heat of the heat dissipation fins 303.

[0055] A conductive plate 41 is disposed on the top of the battery body 4. The battery body 4 is composed of a plurality of battery cells, and the plurality of battery cells are electrically connected through the conductive plate 41.

[0056] The outer wall of the conductive plate 41 is respectively sleeved with a limit plate 42 and a cutting plate 43, the bottom of the limit plate 42 and the cutting plate 43 are fixedly equipped with a base 44, and the inner cavity of the cutting plate 43 is connected with a conduit 45;

[0057] The cutting plate 43 is in a retracted state.

[0058] The conduit 45 is connected to the inner cavity of the cutting plate 43. When the cutting plate 43 is in a contracted state and the sealing bag 107 expands toward the side close to the battery body 4, thereby reducing the space in the inner cavity of the isolation plate 103 and the shell 101, the insulating oil in the inner cavity of the isolation plate 103 and the shell 101 is squeezed into the inner cavity of the cutting plate 43 through the conduit 45 by the expansion of the sealing bag 107, so that the cutting plate 43 changes from a contracted state to a telescopic state;

[0059] The limiting plate 42 limits the conductive plate 41 , so that the cutting plate 43 cuts the conductive plate 41 through the limiting plate 42 , thereby eliminating the electrical connection between the battery cells.

[0060] Working principle: the insulating oil in the cavity formed by the two sets of isolation plates 103 and the shell 101 is transferred to the heat dissipation fins 303 through the liquid pump 302, and is transferred back to the cavity formed by the two sets of isolation plates 103 and the shell 101 through the exhaust pipe 304. The heat dissipation fan 305 is operated, and the air adsorbed at the air inlet 307 is discharged through the air outlet 308, so that the air dissipates the heat of the heat dissipation fins 303;

[0061] The battery control panel 2 detects the state of the battery body 4 through the temperature sensor. When the temperature of the battery body 4 reaches the threshold, the value detected by the temperature sensor increases, and the discharge end of the compression bottle 108 is connected to the inner cavity of the two groups of sealing bags 107. The battery control panel 2 is used to control the compression bottle 108, so that the insulating oil compressed in the inner cavity of the compression bottle 108 is transmitted to the sealing bag 107. The sealing bag 107 is set on the inner wall of the buffer sponge 104, so that the sealing bag 107 expands to the side close to the battery body 4, thereby reducing the space of the isolation plate 103 and the inner cavity of the shell 101, so that the insulating oil in the inner cavity of the isolation plate 103 and the shell 101 is squeezed into the inner cavity of the battery body 4 through the rupture of the battery body 4 by the expansion of the sealing bag 107, and the positive and negative battery cells in the inner cavity of the battery body 4 are coated with the insulating oil, so that the positive and negative battery cells are insulated by the insulating oil, so as to prevent the battery body 4 from further releasing positive and negative ions and causing the battery body 4 to expand and burn due to heat;

[0062] At the same time, the electrolyte inside the battery body 4 is squeezed out by the insulating oil and deposited below the insulating oil due to the density. The liquid at the bottom is transferred to the inner cavity of the isolation chamber 102 through the one-way valve and the connecting pipe.

[0063] By separating the electrolyte into the isolation chamber 102, the electrolyte and the battery body 4 are separated, thereby reducing the possibility of combustion of the battery body 4. At the same time, the electrolyte is sealed by the isolation chamber 102 to prevent the electrolyte from contacting with air, thereby solving the problem of electrolyte overflow causing the electrolyte to contact with oxygen and causing the electrolyte to burn.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof lithium battery, comprising a housing assembly (1), characterized in that: A battery control panel (2) is embedded on one side outer wall of the housing component (1), a heat dissipation component (3) is fixedly mounted on the other side outer wall of the housing component (1), a battery body (4) is clamped in the inner cavity of the housing component (1), a connection seat (5) is fixedly mounted on both the positive and negative ends of the battery body (4), and a power input end of the battery control panel (2) is electrically connected to the connection seat (5).

2. An explosion-proof lithium battery according to claim 1, characterized in that: The housing assembly (1) comprises a housing (101), and both sides of the inner wall of the housing (101) close to the battery control panel (2) are fixedly equipped with isolation chambers (102), and both sides of the inner wall of the housing (101) close to the heat dissipation assembly (3) are fixedly equipped with isolation plates (103), and the two groups of battery bodies (4) are located in the space formed by the two groups of isolation plates (103) and the housing (101), and both sides of the inner wall of the housing (101) are fixedly equipped with buffers. Sponge 1 (104), the inner wall of the buffer sponge 1 (104) is bonded with a sealing bag (107), the inner wall of one end of the shell (101) close to the heat dissipation component (3) is fixedly equipped with buffer sponge 2 (105), the top of the isolation plate (103) is fixedly equipped with a fixing plate (106), a compression bottle (108) is clamped between the two groups of isolation plates (103), and a temperature sensor is provided on one side of the two groups of isolation plates (103) close to the battery body (4).

3. An explosion-proof lithium battery according to claim 2, characterized in that: The fixing plate (106) is located on the top of the battery body (4), and the battery body (4) is abutted by a buffer sponge 1 (104) and a buffer sponge 2 (105), and a flow groove is provided on a side of the buffer sponge 1 (104) and the buffer sponge 2 (105) close to the battery body (4).

4. An explosion-proof lithium battery according to claim 3, characterized in that: The space formed by the isolation plate (103) and the shell (101) is filled with insulating oil, and the discharge end of the compression bottle (108) is connected to the inner cavities of the two groups of sealing bags (107); The compression bottle (108) includes an electronic sealing valve for controlling the discharge of liquid from the compression bottle (108), and the electronic sealing valve is electrically connected to a battery control panel (2), and the battery control panel (2) includes a backup power supply.

5. An explosion-proof lithium battery according to claim 4, characterized in that: The density of the insulating oil is greater than that of the electrolyte, and the two groups of isolation chambers (102) are connected to the space formed by the two groups of isolation plates (103) and the housing (101) through connecting pipes, and the connecting pipes are located at the bottom of the isolation chambers (102); A one-way valve is provided at the connection point between the isolation chamber (102) and the connecting pipe and at the top of the isolation chamber (102).

6. An explosion-proof lithium battery according to claim 5, characterized in that: The heat dissipation assembly (3) comprises a connection shell (301), a liquid pump (302) is fixedly mounted on the inner wall of the bottom of the connection shell (301), one end of a heat dissipation fin (303) is fixedly mounted on the discharge end of the liquid pump (302), and a discharge pipe (304) is fixedly mounted on the other end of the heat dissipation fin (303), and two input ends of the liquid pump (302) are respectively connected to cavities formed by two groups of isolation plates (103) and the shell (101), and the two groups of the discharge pipes (304) are connected to the two groups of isolation plates (103). The outlet pipe (304) is respectively connected to the cavity formed by the two groups of isolation plates (103) and the shell (101); a cooling fan (305) is arranged on the top of the liquid pump (302); a cover plate (306) is fixedly mounted on the outer wall of the connecting shell (301) away from the outer shell assembly (1); an air inlet (307) is provided on the outer wall at the opposite side of the cover plate (306) and the cooling fan (305); and air outlets (308) are provided on the outer walls on both sides of the cover plate (306).

7. An explosion-proof lithium battery according to claim 1, characterized in that: A conductive plate (41) is disposed on the top of the battery body (4), the battery body (4) is composed of a plurality of battery cells, and the plurality of battery cells are electrically connected via the conductive plate (41); The outer wall of the conductive plate (41) is respectively sleeved with a limit plate (42) and a cutting plate (43); the bottoms of the limit plate (42) and the cutting plate (43) are fixedly mounted with a base (44); the inner cavity of the cutting plate (43) is connected with a conduit (45); The cutting plate (43) is in a retracted state.

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