A battery with a fire protection device

Abstract

The present invention discloses a battery with a fire prevention device, which relates to the technical field of battery fire prevention. The present invention comprises a shell, a dustproof net and four groups of batteries, wherein the dustproof net is installed on the front and back of the shell, and four groups of batteries are fixed at the bottom end of the shell. The outer walls of the front and back of the shell are both provided with fire prevention devices, and the fire prevention devices include a fireproof cross partition, which is arranged in the middle of the four groups of batteries, fixed at the bottom and top of the shell, and a temperature sensor is installed in the middle of the fireproof cross partition. The front and rear inner walls of the fireproof cross partition are both provided with electric telescopic rods, and the telescopic end of the electric telescopic rod is fixed with a push plate, a slide groove is provided between the push plate and the bottom of the shell, and three long strips are fixed on the outer surface of the push plate. The present invention thus solves the problem of heat dissipation in case of fire, thereby avoiding the problem of heat not being able to dissipate, which is not conducive to fire extinguishing.

Description

Technical Field

[0001] The present invention relates to the technical field of battery fire prevention, in particular to a battery with a fire prevention device. Background Art

[0002] Batteries are devices that directly convert electrical energy through chemical effects. They have a rechargeable function and can be recycled. Batteries are usually an electrical energy storage device used in people's production and life. They have large and stable voltage capacity. However, if existing batteries catch fire during use, there are no fire prevention measures between multiple battery groups, which can easily cause chain fires.

[0003] Patent number CN212587598U discloses a utility model related to the field of electrical energy technology, particularly a battery device. The fireproof battery device comprises an open-top housing containing a lithium battery pack, a removable cover, and fireproof gaskets on the bottom and top of the housing. The fireproof gaskets comprise an insulating protective layer and a fireproof and heat-insulating layer disposed on the insulating protective layer. The lithium battery pack is positioned between the two fireproof gaskets, and the insulating protective layer separates the fireproof and heat-insulating layer from the lithium battery pack. Due to the adoption of the aforementioned technical solution, the utility model not only has significant fireproofing properties, but also protects the lithium battery pack from external damage and provides good heat dissipation.

[0004] However, the current fireproof battery device has the following problems: the fireproof battery device uses a sealed shell, which is not conducive to heat dissipation in the event of a fire, resulting in heat not being able to dissipate, which is not conducive to fire extinguishing, and the fire extinguishing gasket of the fireproof battery device cannot extinguish the fire source in time. Therefore, we propose a battery with a fireproof device. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a storage battery with a fire prevention device, which solves the heat dissipation problem raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a battery with a fire prevention device, comprising a shell, a dustproof net and four groups of batteries, the dustproof net being installed on the front and back of the shell, four groups of batteries being fixed at the bottom end of the shell, the front and back outer walls of the shell are both provided with fire prevention devices, the fire prevention device comprises a fireproof cross partition, the fireproof cross partition is arranged in the middle of the four groups of batteries, the fireproof cross partition is fixed at the bottom and top end of the shell, a temperature sensor is installed in the middle of the fireproof cross partition, the front and rear inner walls of the top of the fireproof cross partition are both provided with electric telescopic rods, the telescopic end of the electric telescopic rod is fixed with a push plate, a slide groove is provided between the push plate and the bottom of the shell, and the outer surface of the push plate is fixed with Three long strips, each of the three long strips is provided with a multi-layered pendulum blade at one end away from the push plate, a rotating rod is fixed at the left and right middle parts of the multi-layered pendulum blade, a torsion spring is provided between the rotating rod and the inner wall of the shell, and a knocking plate is fixed at one end of the rotating rod away from the long strips. When the fire prevention device is set and used, when the battery catches fire accidentally, the temperature sensor senses the heat in the four groups of batteries, and at the same time the temperature sensor activates the electric telescopic rod through the wire, and the electric telescopic rod pushes the push plate forward, and rotates through the cooperation of the long strips and the multi-layered pendulum blades. The rotating multi-layered pendulum blades flip outward ninety degrees, so that the shell is ventilated to dissipate temperature, cool the shell, and effectively prevent the chain reaction caused by fire; when the multi-layered pendulum blades are not pushed and are in a closed state, they can play a certain dust-proof role.

[0007] Preferably, a fire extinguishing device is provided on both sides of the shell, and the fire extinguishing device includes two carbon dioxide gas storage chambers, which are respectively fixed on the left and right inner walls of the shell, and electric gas valves are provided on the opposite sides of the carbon dioxide gas storage chambers. A circular plate is fixed on the outside of the carbon dioxide gas storage chamber, a rotating baffle is provided in the middle of the circular plate, a torsion spring is provided between the baffle and the inner wall of the circular plate, a pressure plate is provided on the top of the end of the baffle away from the fireproof cross partition, a round rod is fixed on the end of the pressure plate away from the circular plate, a sleeve is slidably installed on the bottom of the round rod, and a spring is provided inside the sleeve. Through the setting of the fire extinguishing device, the multi-layer swing blades move downward through the cooperation of the knocking plate, round rod and pressure plate, and the baffle rotates ninety degrees to form a reflux channel. The closed circular plate blocks the flow of air in the shell and guides the heat to diffuse outward. The electric valve opens the fire location among the four groups of batteries, allowing the high-pressure carbon dioxide gas in the carbon dioxide storage chamber to be rapidly ejected and flow in the return channel, thereby extinguishing the fire caused by the battery; and the high-pressure carbon dioxide gas quickly flows along the blocked return channel, thereby reducing the temperature of the shell and accelerating the heat flow to be evacuated to the outside, making the heat dissipation faster.

[0008] Preferably, the fireproof cross partition is provided with a guide device on both sides, and the guide device includes an electric reciprocating rod, and the electric reciprocating rod is provided at one end away from the carbon dioxide gas storage chamber, and a connecting plate is fixed to the telescopic end of the electric reciprocating rod, and a slide is fixed to the top of the connecting plate away from the electric reciprocating rod, and the slide is slidably mounted on the top of the fireproof cross partition, and shell plates are fixed on the left and right sides of the bottom surface of the slide, and a guide plate is slidably mounted on the end of the shell plate away from the fireproof cross partition, and a spring is provided between the shell plate and the inner wall of the guide plate. By setting up the guide device, the electric reciprocating rod, connecting plate, slide plate and shell plate cooperate with the guide plate to move back and forth, so that the air flow in the shell can circulate quickly, so that heat is not accumulated, thereby making the heat dissipation faster; at the same time, the guide plate fans the high-pressure carbon dioxide gas, thereby further improving the fire extinguishing speed; in normal use, in order to prevent the short circuit and fire of the four batteries caused by vibration, the spring force in the shell plate is used to buffer the vibration of the four batteries, thereby avoiding the short circuit and fire of the four batteries caused by vibration.

[0009] Preferably, the interior of the fireproof cross partition is designed as a hollow shell, and openings are provided on the left and right sides of the top of the fireproof cross partition. The fireproof cross partition is made of fireproof material. At the same time, the fireproof cross partition is made of fireproof material to isolate the four groups of batteries, so that the fire locations between the batteries cannot spread to each other, protecting normal batteries, thereby avoiding a larger fire caused by the batteries.

[0010] Preferably, the multi-layer swing blades are composed of multi-layer plate surfaces and are hollow inside. The multi-layer swing blades are a multi-layer ventilation structure, so that the shell is ventilated to dissipate temperature, the shell is cooled, and the chain reaction caused by fire is effectively prevented.

[0011] Preferably, one end of the long plate away from the push plate is located above the rotating rod.

[0012] Preferably, a round rod is provided below one end of the knocking plate away from the inner wall of the shell, and the knocking plate presses down on the round rod.

[0013] Preferably, the temperature sensor wires are connected to the inside of the fireproof cross partition.

[0014] Preferably, one end of the guide plate away from the shell plate contacts the four groups of batteries, and the guide plate is composed of multiple U-shaped plates, and the U-shaped plates are made of insulating material.

[0015] The present invention provides a storage battery with a fire prevention device. It has the following beneficial effects:

[0016] (1) The present invention sets a fire prevention device. When the battery catches fire accidentally, the temperature sensor senses the heat in the four groups of batteries. At the same time, the temperature sensor starts the electric telescopic rod through the wire. The electric telescopic rod pushes the push plate forward, and the long plate and the multi-layer swing blades rotate together. The rotating multi-layer swing blades flip outward ninety degrees, so that the shell is ventilated to dissipate the temperature, and the shell is cooled, which effectively prevents the chain reaction caused by the fire. When the multi-layer swing blades are not pushed and are in a closed state, they can play a certain dust-proof role. At the same time, the fire-proof cross partition is made of fire-proof material to isolate the four groups of batteries, so that the fire positions between the batteries cannot spread to each other, protecting normal batteries, thereby avoiding a larger fire caused by the batteries.

[0017] (2) The present invention sets up a fire extinguishing device, so that the multi-layer swing blades move downward through the cooperation of the knocking plate, the round rod and the pressure plate, and the baffle rotates ninety degrees to form a return channel. The closed circular plate blocks the flow of air in the shell and guides the heat to diffuse outward. The electric valve opens the fire position among the four groups of batteries, allowing the high-pressure carbon dioxide gas in the carbon dioxide storage chamber to be quickly ejected and flow in the return channel, thereby extinguishing the fire caused by the battery; and the high-pressure ejected carbon dioxide gas quickly flows along the blocked return channel, thereby reducing the temperature of the shell and accelerating the heat flow to be evacuated to the outside, making the heat dissipation faster.

[0018] (3) The present invention sets a flow guide device so that the electric reciprocating rod, the connecting plate, the slide plate and the shell plate can move back and forth in coordination with the flow guide plate, so that the air flow in the shell can circulate quickly, so that heat is not accumulated, thereby making the heat dissipation faster; at the same time, the flow guide plate fans the high-pressure carbon dioxide gas, thereby further improving the fire extinguishing speed; in order to prevent the short circuit and fire of the four groups of batteries caused by vibration during normal use, the spring force in the shell plate can be used to buffer the vibration of the four groups of batteries, thereby avoiding the short circuit and fire of the four groups of batteries caused by vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the present invention as a whole;

[0020] Figure 2 It is a schematic top cross-sectional view of the present invention as a whole;

[0021] Figure 3 Schematic diagram of a top view of the fire protection device of the present invention;

[0022] Figure 4 This is a schematic diagram of the partial structure of the fire protection device of the present invention;

[0023] Figure 5 It is a top view schematic diagram of the fire extinguishing device of the present invention;

[0024] Figure 6 It is a partial schematic diagram of the fire extinguishing device of the present invention;

[0025] Figure 7 Schematic top view of the flow guide device of the present invention;

[0026] Figure 8 This is a schematic diagram of the positions of the slide plate and the shell plate of the present invention.

[0027] In the figure: 1. Shell; 2. Dustproof net; 3. Battery; 4. Fire prevention device; 5. Fire extinguishing device; 6. Diversion device; 41. Multi-layer swing blades; 42. Electric telescopic rod; 43. Fireproof cross partition; 44. Temperature sensor; 45. Rotating rod; 46. Knocking plate; 47. Long strip plate; 48. Push plate; 51. Carbon dioxide storage chamber; 52. Round rod; 53. Pressing plate; 54. Electric gas valve; 55. Baffle; 56. Circular plate; 57. Sleeve; 61. Electric reciprocating rod; 62. Diversion plate; 63. Slide plate; 64. Shell plate; 65. Connecting plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] See also Figure 1-8The present invention provides a technical solution: a battery with a fire prevention device, comprising a shell 1, a dustproof net 2 and four groups of batteries 3, the dustproof net 2 being installed on the front and back of the shell 1, so that the dustproof net 2 shields the shell 1 body from dust, thereby preventing the four groups of batteries 3 from short-circuiting and catching fire due to dust, four groups of batteries 3 are fixed at the bottom end of the shell 1, and fire prevention devices 4 are provided on the front and back outer walls of the shell 1, the fire prevention devices 4 include a fireproof cross partition 43, the fireproof cross partition 43 is arranged in the middle of the four groups of batteries 3, the fireproof cross partition 43 is fixed at the bottom and top end of the shell 1, a temperature sensor 44 is installed in the middle of the fireproof cross partition 43, the fireproof cross partition 43 is made of fireproof material, and is used to isolate the four groups of batteries 3, so that the batteries 3 The fire positions between them cannot spread to each other, protecting the normal storage battery 3 and avoiding a larger fire caused by the storage battery 3. The front and rear inner walls of the top of the fireproof cross partition 43 are both provided with an electric telescopic rod 42. The telescopic end of the electric telescopic rod 42 is fixed with a push plate 48. A slide groove is provided between the push plate 48 and the bottom of the shell 1. The outer surface of the push plate 48 is fixed with three long plates 47. The three long plates 47 are provided with multi-layer swing leaves 41 at one end away from the push plate 48. A rotating rod 45 is fixed to the left and right middle parts of the multi-layer swing leaves 41. A torsion spring is provided between the rotating rod 45 and the inner wall of the shell 1. A knocking plate 46 is fixed at one end of the rotating rod 45 away from the long plates 47. The rotating multi-layer swing leaves 41 are turned outward by ninety degrees. The multi-layer swing leaves 41 are a multi-layer ventilation structure, so that the shell 1 is ventilated and the temperature is dissipated, and the shell is ventilated. 1 cooling, effectively preventing the chain reaction caused by fire, the shell 1 is provided with a fire extinguishing device 5 on both sides, the fire extinguishing device 5 includes two carbon dioxide gas storage chambers 51, the two carbon dioxide gas storage chambers 51 are respectively fixed to the left and right inner walls of the shell 1, the carbon dioxide gas storage chambers 51 are provided with electric valves 54 on opposite sides, the carbon dioxide gas storage chambers 51 are fixed with a circular plate 56 on the outside, a rotating baffle 55 is provided in the middle of the circular plate 56, a torsion spring is provided between the baffle 55 and the inner wall of the circular plate 56, a pressure plate 53 is provided on the top of the end of the baffle 55 away from the fire cross partition 43, a round rod 52 is fixed on the end of the pressure plate 53 away from the circular plate 56, a sleeve 57 is slidably installed on the bottom of the circular rod 52, a spring is provided inside the sleeve 57 to close the circular plate 56 and form a reflux channel, the closed reflux The shaped plate 56 blocks the flow of air in the shell 1 and guides the heat to diffuse outward. The high-pressure carbon dioxide gas in the carbon dioxide storage chamber 51 is quickly ejected and flows in the return path, thereby extinguishing the fire caused by the battery 3. The fireproof cross partition 43 is provided with a guide device 6 on both sides. The guide device 6 includes an electric reciprocating rod 61. The electric reciprocating rod 61 is set at one end away from the carbon dioxide storage chamber 51. The telescopic end of the electric reciprocating rod 61 is fixed with a connecting plate 65. The top of the connecting plate 65 away from the end of the electric reciprocating rod 61 is fixed with a slide plate 63. The slide plate 63 is slidably installed on the top of the fireproof cross partition 43. Shell plates 64 are fixed on the left and right sides of the bottom surface of the slide plate 63. The shell plate 64 away from the fireproof cross partition 43 is penetrated by a guide plate 62 that is slidably installed.A spring is provided between the shell plate 64 and the inner wall of the guide plate 62, so that the air flow in the shell 1 circulates quickly, so that heat is not accumulated, thereby making the heat dissipation faster; at the same time, the guide plate 62 fans the high-pressure carbon dioxide gas, thereby further improving the fire extinguishing speed; in order to prevent the short circuit and fire of the four groups of batteries 3 caused by vibration during normal use, under the action of the spring force in the shell plate 64, the guide plate 62 acts to buffer the vibration of the four groups of batteries 3, thereby avoiding the short circuit and fire caused by vibration of the four groups of batteries 3. The interior of the fireproof cross partition 43 is an empty shell. The fireproof cross partition 43 has openings on the left and right sides of its top. The fireproof cross partition 43 is made of fireproof material. The multi-layer swing blade 41 is composed of multi-layer board surfaces and is hollow inside. The end of the long strip 47 away from the push plate 48 is located above the rotating rod 45. A round rod 52 is located below the end of the knocking plate 46 away from the inner wall of the shell 1. The knocking plate 46 presses down on the round rod 52. The temperature sensor 44 is connected to the interior of the fireproof cross partition 43 with wires. The end of the deflector 62 away from the shell plate 64 contacts the four groups of batteries 3. The deflector 62 is composed of multiple U-shaped plates, and the U-shaped plates are made of insulating material.

[0030] When in use, the dustproof net 2 is set so that the dustproof net 2 can shield the main body of the shell 1 from dust, thereby effectively preventing the four groups of batteries 3 from short-circuiting and catching fire due to dust; when the battery catches fire accidentally, the temperature sensor 44 senses the heat in the four groups of batteries 3, thereby determining the location of the fire in the four groups of batteries 3; at the same time, the temperature sensor 44 activates the electric telescopic rod 42 through the wire, and the electric telescopic rod 42 pushes the push plate 48 forward, and the push plate 48 pushes the long strip 47 forward, and the long strip 47 pushes the multi-layer swing leaf 41 to move The rotating multi-layered swing blades 41 are turned outward ninety degrees. The multi-layered swing blades 41 are a multi-layered ventilation structure, so that the shell 1 is ventilated to dissipate temperature, and the shell 1 is cooled, which effectively prevents the chain reaction caused by the fire. When the multi-layered swing blades 41 are not pushed and are in a closed state, they can play a certain dust-proof role. At the same time, the fireproof cross partition 43 is a fireproof material, which isolates the four groups of batteries 3, so that the fire positions between the batteries 3 cannot spread to each other, and the normal batteries 3 are protected, thereby avoiding the fire caused by the batteries 3 from getting bigger.

[0031] At the same time, the multi-layer swing blade 41 rotates and drives the rotating rod 45 to rotate 90 degrees. The rotating rod 45 drives the knocking plate 46 to move downward. The knocking plate 46 presses the round rod 52 downward. The round rod 52 makes the pressure plate 53 move downward. The pressure plate 53 presses down the baffle 55 expanded by the circular plate 56, so that the baffle 55 rotates 90 degrees, closes the circular plate 56, and forms a reflux channel. The closed circular plate 56 blocks the circulation of airflow in the shell 1 and guides heat to diffuse outward. At the same time, the electric valve 54 connected to the wire of the temperature sensor 44 is started, and the electric valve 54 is opened to the fire position among the four groups of batteries 3, allowing the dioxide to The high-pressure carbon dioxide gas in the carbon storage chamber 51 is quickly ejected and flows in the return path, thereby extinguishing the fire caused by the battery 3; and the high-pressure carbon dioxide gas is quickly circulated along the blocked return path, thereby reducing the temperature of the shell 1 and accelerating the heat flow to be evacuated to the outside, making the heat dissipation faster and improving the speed of fire extinguishing; when the sleeve 57 spring resets the round rod 52, and the torsion spring resets the baffle 55 at the same time, the baffle 55 rotates ninety degrees, and the baffle 55 is in an expanded state, allowing the internal gas to circulate smoothly, thereby effectively preventing short-circuit fire caused by the high temperature of the four groups of batteries 3 during operation.

[0032] At the same time, the telescopic end of the electric reciprocating rod 61 moves back and forth, and the electric reciprocating rod 61 drives the connecting plate 65 to move back and forth, and the connecting plate 65 drives the slide plate 63 to move back and forth, and the sliding slide plate 63 drives the shell plate 64, and the guide plate 62 of the shell plate 64 moves back and forth. The moving guide plate 62 has a certain fanning effect, allowing the air flow in the shell 1 to circulate quickly, so that heat is not accumulated, thereby making the heat dissipation faster; at the same time, the guide plate 62 fanning acts on the high-pressure erupting carbon dioxide gas, thereby further improving the fire extinguishing speed; in order to prevent the short circuit and fire of the four groups of batteries 3 caused by vibration during normal use, under the action of the spring force in the shell plate 64, the elastic force of the guide plate 62 is used to buffer the vibration of the four groups of batteries 3, thereby avoiding the short circuit and fire of the four groups of batteries 3 caused by vibration.

[0033] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A battery with a fire prevention device, comprising a housing (1), a dust screen (2) and four groups of batteries (3), wherein the dust screen (2) is mounted on the front and back of the housing (1), and the four groups of batteries (3) are fixed at the bottom end of the housing (1), characterized in that: The front and back outer walls of the housing (1) are both provided with fire prevention devices (4), the fire prevention devices (4) comprising a fire prevention cross partition (43), the fire prevention cross partition (43) being provided between the four groups of batteries (3), the fire prevention cross partition (43) being fixed to the bottom and top ends of the interior of the housing (1), a temperature sensor (44) being installed in the middle of the interior of the fire prevention cross partition (43), the front and back inner walls of the top of the fire prevention cross partition (43) being both provided with electric telescopic rods (42), the electric telescopic rods (42) A push plate (48) is fixed to the telescopic end, a slide groove is provided between the push plate (48) and the bottom of the shell (1), three long strips (47) are fixed to the outer surface of the push plate (48), and a multi-layer swing blade (41) is provided at one end of the three long strips (47) away from the push plate (48), and a rotating rod (45) is fixed to the left and right middle parts of the multi-layer swing blade (41), a torsion spring is provided between the rotating rod (45) and the inner wall of the shell (1), and a knocking plate (46) is fixed to one end of the rotating rod (45) away from the long strips (47); Fire extinguishing devices (5) are provided on both sides of the shell (1). The fire extinguishing devices (5) include two carbon dioxide gas storage chambers (51). The two carbon dioxide gas storage chambers (51) are respectively fixed on the left and right inner walls of the shell (1). The opposite sides of the carbon dioxide gas storage chambers (51) are provided with electric valves (54). A circular plate (56) is fixed on the outside of the carbon dioxide gas storage chamber (51). A rotating baffle (55) is provided in the middle of the circular plate (56). A torsion spring is provided between the baffle (55) and the inner wall of the circular plate (56). A pressure plate (53) is provided on the top of one end of the baffle (55) away from the fireproof cross partition (43). A round rod (52) is fixed on one end of the pressure plate (53) away from the circular plate (56). A sleeve (57) is slidably installed on the bottom of the circular rod (52). A spring is provided inside the sleeve (57). The fireproof cross partition (43) is provided with a flow guide device (6) on both sides. The flow guide device (6) includes an electric reciprocating rod (61). The electric reciprocating rod (61) is provided at one end away from the carbon dioxide gas storage chamber 51. A connecting plate (65) is fixed to the telescopic end of the electric reciprocating rod (61). A slide plate (63) is fixed to the top of the end of the connecting plate (65) away from the electric reciprocating rod (61). The slide plate (63) is slidably mounted on the top of the fireproof cross partition (43). Shell plates (64) are fixed to the left and right sides of the bottom surface of the slide plate (63). A flow guide plate (62) is slidably mounted through the end of the shell plate (64) away from the fireproof cross partition (43). A spring is provided between the shell plate (64) and the inner wall of the flow guide plate (62).

2. The battery with a fire protection device according to claim 1, characterized in that: The interior of the fireproof cross partition (43) is designed as a hollow shell, and openings are provided on the left and right sides of the top of the fireproof cross partition (43). The fireproof cross partition (43) is made of fireproof material.

3. The battery with a fire protection device according to claim 1, characterized in that: The multi-layer swing blade (41) is composed of multi-layer plate surfaces and is hollow inside.

4. The battery with a fire protection device according to claim 1, characterized in that: One end of the long plate (47) away from the push plate (48) is located above the rotating rod (45).

5. The battery with a fire protection device according to claim 1, characterized in that: A round rod (52) is provided below one end of the knocking plate (46) away from the inner wall of the housing 1, and the knocking plate (46) presses down on the round rod (52).

6. A battery with a fire protection device according to claim 2, characterized in that The temperature sensor (44) is connected to the interior of the fireproof cross partition (43) through an electric wire.

7. The battery with a fire protection device according to claim 6, characterized in that: One end of the guide plate (62) away from the shell plate (64) contacts the four groups of storage batteries (3). The guide plate (62) is composed of multiple U-shaped plates, and the U-shaped plates are made of insulating materials.

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