Lithium battery assembly and lithium battery protection mechanism

Abstract

The invention discloses a lithium battery assembly and a lithium battery protection mechanism. The lithium battery assembly comprises a shell, the inner wall of the shell is fixedly connected with a mounting plate, the mounting plate is provided with a lithium battery pack, the top of the shell is provided with a sealing cover, and the bottom of the sealing cover is provided with fan blades; and the clamping plates are used for clamping the periphery of the lithium battery pack. According to the lithium battery assembly and the lithium battery protection mechanism, all faces of the lithium battery pack are clamped through the clamping plates, the stability of the lithium battery in the shell is guaranteed, when the temperature is abnormal when the lithium battery pack works, the clamping plates are moved to be away from the lithium battery pack through the driving assembly, and meanwhile the driving assembly drives the sealing plate to be opened; and then through rotation of the fan blades, the air flows into the shell, and then the heat is taken out of the shell, so that effective heat dissipation of the lithium battery is realized, the situation that the heat is not discharged in time due to factors such as a silica gel pad or foam is reduced, and the service life of the lithium battery pack is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery assembly and a lithium battery protection mechanism. Background Art

[0002] A battery pack is a power supply device composed of multiple single cells connected in series, parallel, or hybrid, designed to provide higher voltage, capacity, or power output. Depending on the usage environment and requirements, battery packs can use different types of single cells, including lithium-ion batteries and nickel-metal hydride batteries. Lithium batteries, due to their high energy density and low self-discharge, are widely used in modern electronic devices and vehicles.

[0003] When installing a lithium battery pack, there are sharp edges and corners inside the casing. In order to avoid scratching the aluminum-plastic composite film or diaphragm of the lithium battery pack, silicone pads and foam need to be filled between the lithium battery pack and the casing. When the lithium battery is working, when the temperature of the lithium battery is abnormal, the lithium battery circuit needs to be cut off and heat dissipated. The silicone pads and foam filled in the casing will block the effective heat dissipation of the lithium battery, and the foam has a heat preservation function, which further causes the heat to be unable to be discharged in time, thereby increasing the load on the lithium battery and reducing the service life of the lithium battery. Summary of the Invention

[0004] The object of the present invention is to provide a lithium battery assembly and a lithium battery protection mechanism to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: comprising a housing, an inner wall of the housing is fixedly connected to a mounting plate, a lithium battery pack is arranged on the mounting plate, a sealing cover is arranged on the top of the housing, and a fan blade is arranged on the bottom of the sealing cover; It also includes multiple clamping plates for clamping the four sides of the lithium battery pack. When the temperature of the lithium battery pack is abnormal, the multiple driving components push the clamping plates away from the lithium battery pack. It also includes a plurality of sealing plates slidably arranged in the shell. When the driving assembly moves, the sealing plates are driven to open, and the fan blades rotate to form flowing air in the shell.

[0006] As a further description of the above technical solution: It also includes a rotating component, which drives the clamping plate to rotate when the sealing plate moves to open, so as to guide the air.

[0007] As a further description of the above technical solution: It also includes a sealing component, which drives the sealing component to open when the fan blades rotate, so that the heat in the shell can be discharged.

[0008] As a further description of the above technical solution: The driving assembly includes a plurality of fixed tubes fixed to the inner wall of the outer shell, a sliding rod is slidably arranged in each of the fixed tubes, and each of the clamping plates is rotatably arranged on each sliding rod. A screw is connected to the inner thread of the sliding rod, and the end of the screw is rotatably arranged on the inner wall of the outer shell, and a first gear is fixedly connected to the outside of the screw.

[0009] As a further description of the above technical solution: The drive assembly also includes an electric telescopic rod fixed to the bottom of the inner wall of the shell, the output end of the electric telescopic rod is rotatably connected to a push rod, the top end of the push rod is rotatably connected to a first rack, and the first rack passes through multiple fixed tubes located on the same side and is engaged with each first gear transmission.

[0010] As a further description of the above technical solution: The rotating assembly includes a limit plate fixed on the clamping plate, a sector gear is fixedly connected to the outside of the limit plate, and a second rack that is meshed with the sector gear is fixedly connected to the outside of the fixed tube.

[0011] As a further description of the above technical solution: The sealing assembly includes a plurality of rotating plates rotatably arranged on the sealing cover, the ends of the rotating plates are fixedly connected with torsion springs, the torsion springs are fixedly connected to the sealing cover, and a plurality of heat dissipation holes are formed on the shell.

[0012] As a further description of the above technical solution: A fixing rod is fixedly connected to the sealing plate, and a driving block adapted to the fixing rod is fixedly connected to the first gear.

[0013] As a further description of the above technical solution: A plurality of guide holes are provided on the clamping plate.

[0014] As a further description of the above technical solution: A lithium battery protection mechanism comprises any one of the lithium battery components described above.

[0015] In the above technical solution, the lithium battery assembly and lithium battery protection mechanism provided by the present invention have the following beneficial effects: The present invention: clamps the lithium battery pack on all sides through the clamping plate to ensure the stability of the lithium battery inside the shell. When the temperature of the lithium battery pack is abnormal during operation, the clamping plate is moved away from the lithium battery pack through the driving component, and the driving component drives the sealing plate to open at the same time. Then, the fan blades rotate to allow air to flow into the shell and then bring the heat out of the shell, thereby achieving effective heat dissipation of the lithium battery, reducing the untimely heat discharge caused by factors such as silicone pads or foam, and improving the service life of the lithium battery pack.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0017] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of a three-dimensional structure provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a housing provided in an embodiment of the present invention; Figure 3 A schematic diagram of the longitudinal cross-section structure of a housing provided in an embodiment of the present invention; Figure 4 The embodiment of the present invention provides Figure 3 An enlarged view of point A is shown; Figure 5 The embodiment of the present invention provides Figure 3 An enlarged view of point B is shown; Figure 6 A schematic diagram of a partial longitudinal cross-section of a drive assembly provided in an embodiment of the present invention; Figure 7 A schematic diagram of a partial structure of a sealing cover provided in an embodiment of the present invention; Figure 8 The embodiment of the present invention provides Figure 7 An enlarged view of point C is shown.

[0020] Description of reference numerals: 1. Casing; 11. Sealing cover; 111. Heat dissipation holes; 12. Mounting plate; 2. Lithium battery pack; 3. Fan blades; 4. Clamping plate; 41. Air guide holes; 51. Fixed tube; 52. Sliding rod; 53. Screw; 54. First gear; 55. First rack; 56. Electric telescopic rod; 57. Push rod; 61. Fan gear; 62. Second rack; 63. Limiting plate; 7. Sealing plate; 71. Fixed rod; 72. Drive block; 8. Rotating plate; 81. Torsion spring. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure. See also Figures 1-8 The present embodiment provides a lithium battery assembly, comprising a housing 1, an inner wall of the housing 1 being fixedly connected to a mounting plate 12, a lithium battery pack 2 being arranged on the mounting plate 12, a sealing cover 11 being arranged on the top of the housing 1, and a fan blade 3 being arranged on the bottom of the sealing cover 11; a plurality of clamping plates 4 are also provided, and the contact surface between the clamping plates 4 and the lithium battery pack 2 can be provided with a soft material to avoid scratching the aluminum-plastic composite film or diaphragm of the battery cell, so as to clamp the four sides of the lithium battery pack 2. When the temperature of the lithium battery pack 2 is abnormal, the clamping plates 4 are pushed away from the lithium battery pack 2 by the plurality of driving components; a plurality of sealing plates 7 are also provided in a sliding manner in the housing 1. When the driving component moves, the sealing plate 7 is driven to open, and the rotation of the fan blades 3 forms flowing air in the outer shell 1. The clamping plates 4 clamp the lithium battery pack 2 on all sides to ensure the stability of the lithium battery inside the outer shell 1. When the temperature of the lithium battery pack 2 is abnormal during operation, the clamping plate 4 is moved away from the lithium battery pack 2 by the driving component, and the sealing plate 7 is driven to open at the same time. Then, the fan blades 3 rotate to allow air to flow into the outer shell 1, and then the heat is taken out of the outer shell 1, thereby achieving effective heat dissipation of the lithium battery, reducing the untimely heat discharge due to factors such as silicone pads or foam, and improving the service life of the lithium battery pack 2.

[0022] In an embodiment further provided by the present invention, a rotating component is also included, which drives the clamping plate 4 to rotate when the sealing plate 7 moves open to guide the air. After the clamping plate 4 is moved out of the lithium battery pack 2, the clamping plate 4 is passively driven to rotate into an inclined state. When the fan blade 3 rotates, when the air enters the outer shell 1 through the sealing plate 7, the air is assisted to flow into the lithium battery through the inclined clamping plate 4, reducing the air flow between the outer shell 1 and the clamping plate 4, increasing the gas flow rate, and improving the heat dissipation efficiency.

[0023] The present invention further provides an embodiment, which further includes a sealing assembly. When the fan blades 3 rotate, the sealing assembly is driven to open so that the heat in the housing 1 can be discharged.

[0024] In the embodiment provided by the present invention, the driving assembly includes a plurality of fixed tubes 51 fixed to the inner wall of the outer shell 1, and a sliding rod 52 is slidably arranged in each fixed tube 51, and each clamping plate 4 is rotatably arranged on each sliding rod 52. The clamping plate 4 and the sliding rod 52 remain stationary under normal conditions. When the sliding rod 52 moves horizontally, when there is no external force driving, the clamping plate 4 and the sliding rod 52 are in a mutually perpendicular state. The internal thread of the sliding rod 52 is connected to a screw 53, and the end of the screw 53 is rotatably arranged on the inner wall of the outer shell 1, and the screw 53 is fixedly connected to the outside of the first gear 54.

[0025] Furthermore, the drive assembly also includes an electric telescopic rod 56 fixed to the bottom of the inner wall of the shell 1. The output end of the electric telescopic rod 56 is rotatably connected to a push rod 57. The top end of the push rod 57 is rotatably connected to a first rack 55. The first rack 55 passes through multiple fixed tubes 51 located on the same side and is in transmission engagement with each first gear 54.

[0026] In a solution further provided by the present invention, the rotating assembly includes a limit plate 63 fixed on the clamping plate 4, the limit plate 63 is fixedly connected to the sector gear 61, and the fixed tube 51 is fixedly connected to the second rack 62 that is in transmission engagement with the sector gear 61.

[0027] In the present invention, the sealing assembly includes a plurality of rotating plates 8 rotatably arranged on the sealing cover 11, the ends of the rotating plates 8 are fixedly connected to torsion springs 81, and the torsion springs 81 are fixedly connected to the sealing cover 11. A plurality of heat dissipation holes 111 are provided on the outer shell 1. Under normal circumstances, the rotating plates 8 rotate to cover the heat dissipation holes 111 to ensure that the internal environment of the outer shell 1 is clean during normal use. When the internal pressure of the lithium battery rises abnormally, the rotating plates 8 are passively opened to achieve automatic pressure relief.

[0028] Furthermore, a fixing rod 71 is fixedly connected to the sealing plate 7, and a driving block 72 adapted to the fixing rod 71 is fixedly connected to the first gear 54. When the first rack 55 moves upward to drive the first gear 54 to rotate, the driving block 72 is driven upward at the same time, driving the fixing rod 71 to move synchronously, so that the movement of the clamping plate 4 and the opening of the sealing plate 7 are carried out simultaneously.

[0029] Specifically, a plurality of guide holes 41 are provided on the clamping plate 4. By providing the inclined guide holes 41, after air enters the housing 1 from the outside through the opening at the sealing plate 7, the air is dispersed through the plurality of guide holes 41 to dissipate heat to the lithium battery pack 2, thereby improving the heat dissipation efficiency of the lithium battery pack 2.

[0030] In an embodiment further provided by the present invention, a lithium battery protection mechanism includes any one of the lithium battery components described above.

[0031] During use, when the temperature of the lithium battery pack 2 is abnormal, the electric telescopic rod 56 and the fan blade 3 are driven to work, and the electric telescopic rod 56 extends to drive the push rod 57 to move, thereby driving the first rack 55 to move upward, thereby driving the first gear 54 to rotate, and driving the screw 53 to rotate synchronously, so that the sliding rod 52 moves into the fixed tube 51, thereby driving the clamping plate 4 to move synchronously, so that the clamping plate 4 is away from the lithium battery; During the movement of the clamping plate 4, the sector gear 61 is driven to rotate synchronously. When the sector gear 61 is engaged with the second rack 62, the sector gear 61 is driven to rotate, thereby driving the clamping plate 4 to rotate, so that the clamping plate 4 is tilted, which helps air flow to the lithium battery for heat dissipation. During the upward movement of the first rack 55, the driving block 72 is driven to move upward synchronously. When the driving block 72 contacts the fixing rod 71, the driving block 72 continues to move upward, driving the fixing rod 71 to move upward synchronously, thereby opening the sealing plate 7, so that the housing 1 is in the open state. At this time, the electric telescopic rod 56 is closed and remains in the extended state. The fan blades 3 are driven to rotate, drawing air into the housing 1 through the holes in the sealing plate 7. The air is then directed to the lithium battery pack 2 through the inclined clamping plate 4 and the guide holes 41, thereby dissipating heat from the lithium battery pack 2. The dissipated air is then discharged through the open rotating plate 8, forming a heat dissipation channel, thereby achieving effective heat dissipation from the lithium battery pack 2. When heat dissipation is completed, the fan blades 3 are closed and the electric telescopic rod 56 is retracted. The push rod 57 drives the first rack 55 downward, thereby driving the screw 53 to rotate in the opposite direction through the first gear 54, and moving the sliding rod 52 out of the fixed tube 51. At the same time, under the action of the second rack 62, the sector gear 61 is driven to rotate and the clamping plate 4 is rotated to a vertical state. As the sliding rod 52 moves, the clamping plate 4 abuts against the surface of the lithium battery pack 2. At the same time, the first rack 55 moves downward, driving the driving block 72 to move downward. Under the action of gravity, the sealing plate 7 drives the fixing rod 71 to move downward, sealing the housing 1 to form a sealed environment and ensure stable operation of the lithium battery pack 2.

[0032] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A lithium battery assembly, comprising a housing (1), characterized in that: The inner wall of the housing (1) is fixedly connected to a mounting plate (12), a lithium battery pack (2) is arranged on the mounting plate (12), a sealing cover (11) is arranged on the top of the housing (1), and a fan blade (3) is arranged on the bottom of the sealing cover (11); It also includes a plurality of clamping plates (4), and the contact surfaces of the clamping plates (4) and the lithium battery pack (2) can be provided with a soft material to avoid scratching the aluminum-plastic composite film or the diaphragm of the battery cell, so as to be used to clamp the four sides of the lithium battery pack (2). When the temperature of the lithium battery pack (2) is abnormal, the clamping plates (4) are pushed away from the lithium battery pack (2) by the plurality of driving components; It also includes a plurality of sealing plates (7) slidably arranged in the housing (1). When the driving assembly moves, the sealing plates (7) are driven to open, and the fan blades (3) rotate, so that flowing air is formed in the housing (1).

2. A lithium battery assembly according to claim 1, characterized in that: It also includes a rotating assembly that drives the clamping plate (4) to rotate when the sealing plate (7) moves to open, so as to guide the air.

3. A lithium battery assembly according to claim 1, characterized in that: It also includes a sealing component, which drives the sealing component to open when the fan blade (3) rotates, so as to discharge the heat in the housing (1).

4. A lithium battery assembly according to claim 1, characterized in that: The driving assembly includes a plurality of fixed tubes (51) fixed to the inner wall of the housing (1), a sliding rod (52) is slidably arranged in each of the fixed tubes (51), and each of the clamping plates (4) is rotatably arranged on each of the sliding rods (52). The sliding rods (52) are internally threaded with a screw rod (53), the end of the screw rod (53) is rotatably arranged on the inner wall of the housing (1), and the screw rod (53) is externally fixedly connected to a first gear (54).

5. A lithium battery assembly according to claim 1, characterized in that: The driving assembly further comprises an electric telescopic rod (56) fixed to the bottom of the inner wall of the housing (1), the output end of the electric telescopic rod (56) being rotatably connected to a push rod (57), the top end of the push rod (57) being rotatably connected to a first rack (55), the first rack (55) passing through a plurality of fixed tubes (51) located on the same side and being in transmission engagement with each first gear (54).

6. A lithium battery assembly according to claim 1, characterized in that: The rotating assembly comprises a limit plate (63) fixed on the clamping plate (4), the limit plate (63) is fixedly connected to a sector gear (61) on the outside, and the fixed tube (51) is fixedly connected to a second rack (62) in transmission meshing with the sector gear (61) on the outside.

7. A lithium battery assembly according to claim 1, characterized in that: The sealing assembly comprises a plurality of rotating plates (8) rotatably arranged on a sealing cover (11), the ends of the rotating plates (8) being fixedly connected to torsion springs (81), the torsion springs (81) being fixedly connected to the sealing cover (11), and a plurality of heat dissipation holes (111) being provided on the housing (1).

8. A lithium battery assembly according to claim 1, characterized in that: A fixing rod (71) is fixedly connected to the sealing plate (7), and a driving block (72) adapted to the fixing rod (71) is fixedly connected to the first gear (54).

9. A lithium battery assembly according to claim 1, characterized in that: The clamping plate (4) is provided with a plurality of guide holes (41).

10. A lithium battery protection mechanism, characterized in that: A lithium battery assembly comprising any one of claims 1-9.

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