Ultra-high charge and discharge rate lithium-ion power battery

Abstract

The present invention discloses a lithium-ion power battery with ultra-high charge and discharge rates, comprising a placement bracket, a battery cell, an elastic connection component, a pressure relief component, a battery mounting component, an upper cover and a tightening bracket, wherein the battery cell is slidably connected in grooves uniformly opened on the placement bracket, and a connecting base frame is provided at the bottom of the placement bracket. In the present invention, the battery cell is fixed in the placement bracket by the provided battery mounting component, and the battery cell can be taken out by releasing the limit of the tightening bracket on the lifting bracket. The installation and disassembly process is simple, and the labor intensity of replacing independent battery cells is reduced; the provided elastic connection component is used to elastically connect the external connector to the power supply structure, so as to avoid the connection welding point from falling off due to impact during use, thereby ensuring the working stability of the battery; when the internal air pressure of the equipment surges, the provided pressure relief component is used to release the pressure, so as to prevent the internal pressure of the battery from being too high and causing explosion, thereby eliminating safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a lithium-ion power battery with an ultra-high charge and discharge rate. Background Art

[0002] A power battery is a power source that provides power for tools. It is a storage battery that can power equipment such as electric vehicles, electric trains, and electric bicycles. Among them, lithium-ion power batteries have a high energy density, high storage energy density, and ultra-high charge and discharge rates. Existing ultra-high charge and discharge rate lithium-ion batteries can basically meet the user's usage needs, but there are still certain shortcomings. First, the charge and discharge units in existing ultra-high charge and discharge rate lithium-ion batteries are mostly fixed as a whole inside the battery bracket, which is difficult to disassemble separately, thereby increasing the labor intensity of replacing independent charge and discharge units; second, the external connectors of existing ultra-high charge and discharge rate lithium-ion batteries are mostly connected by spot welding. During use, the battery is easily affected by impact, which can easily cause the connection solder joints to fall off, thereby affecting the battery's working stability; third, existing ultra-high charge and discharge rate lithium-ion batteries lack a pressure relief structure. When the battery is charged and discharged abnormally, the temperature inside the battery will rise rapidly, causing the internal gas pressure of the battery to surge and explode, posing certain safety hazards; therefore, it is very necessary to design a lithium-ion power battery with ultra-high charge and discharge rate. Summary of the Invention

[0003] The object of the present invention is to provide a lithium-ion power battery with ultra-high charge and discharge rates to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lithium-ion power battery with an ultra-high charge and discharge rate, comprising a placement bracket, a battery cell, a connecting base, a first bracket, a connecting top bracket, a second bracket, an elastic connection assembly, a pressure relief assembly, a battery mounting assembly, an upper cover, an external joint, a closed shell and a tightening bracket, wherein the battery cell is slidably connected in the grooves evenly provided on the placement bracket, and the bottom of the placement bracket is provided with a connecting base, a bottom connecting piece embedded in the connecting base is attached to the bottom of the battery cell, and a first bracket is provided on one side of the connecting base, a connecting top bracket is provided on the top of the placement bracket, and a second bracket is provided on one side of the connecting top bracket, and the first bracket and the second bracket are both provided with connecting columns in the elastic connection assembly.

[0005] Preferably, the elastic connecting assembly consists of a connecting column, a connecting ring, a connecting spring and a connecting bracket. The connecting column is slidably connected to a connecting ring, and connecting springs are evenly arranged on the outside of the connecting ring. One end of the connecting spring is fixedly connected to the inner wall of the connecting bracket, and the connecting bracket is fixedly sleeved in a groove opened on one side of the top of the upper cover, and an external joint is provided on the top of the connecting bracket.

[0006] Preferably, a closed shell is provided at the bottom of the upper cover, and a tightening bracket is evenly provided on one side of the bottom of the upper cover. The groove opened inside the closed shell is fixedly sleeved to place the bracket, the connecting bottom frame and the connecting top frame. The top connecting frame is embedded with a top connecting piece, and the connecting top frame is provided with an electrical connection groove in the battery mounting assembly.

[0007] Preferably, the battery mounting assembly consists of a mounting shell, an electrical connection groove, an electrical connection block, a connecting rotate frame, a fixed block, a sliding column, a connecting sleeve, a sliding groove, a reset spring and a lifting bracket. The electrical connection block is slidingly connected in the electrical connection groove, and the electrical connection block is slidingly connected in the through grooves symmetrically opened on both sides of the mounting shell. The electrical connection block is connected to one end of the connecting rotate frame through a rotating shaft, and the other end of the connecting rotate frame is rotatably connected to the fixed block.

[0008] Preferably, the fixed blocks are symmetrically arranged on both sides of the sliding column, and the sliding column is slidingly connected in the connecting sleeve, sliding grooves are symmetrically opened on both sides of the connecting sleeve, and the fixed blocks are slidingly connected in the sliding grooves, the connecting sleeve is fixed on the top of the battery cell, and the positive pole of the battery cell is electrically connected to the connecting sleeve.

[0009] Preferably, the top of the connecting sleeve is sleeved in the through hole opened in the top of the mounting shell, and the mounting shell is fixedly sleeved on the top of the battery cell, a lifting bracket is slidably connected in the groove symmetrically opened on the top of the mounting shell, and the through hole opened on the lifting bracket is fixedly sleeved on the top of the sliding column, the top of the lifting bracket is fitted on the bottom of the tightening bracket, a return spring is provided at the bottom end of the sliding column, and the return spring is located inside the connecting sleeve, and the bottom end of the return spring is fitted on the top of the battery cell.

[0010] Preferably, a pressure relief base frame in a pressure relief assembly is provided at the bottom of the closed shell, and the pressure relief assembly consists of a pressure relief base frame, a pressure relief groove, a pressure relief plate, a closing plate, a locking groove and a locking block. Pressure relief grooves are symmetrically provided on both sides of the pressure relief base frame, and a pressure relief plate is provided inside the pressure relief base frame, and locking grooves are evenly provided on the pressure relief plate.

[0011] Preferably, a closing plate is slidably connected to the groove opened on the pressure relief plate, and a locking block is slidably connected to the connecting groove evenly opened on the closing plate, one end of the locking block is provided with a locking spring, and the locking spring is located inside the connecting groove, and the other end of the locking block is fitted and connected in the locking groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the ultra-high charge and discharge rate lithium-ion power battery supports the battery cell by means of the provided placement bracket. When replacing the battery cell, the upper cover is removed to release the limit of the top bracket on the lifting bracket. Then, the lifting bracket drives the sliding column and the fixed block to slide upward under the elastic force of the reset spring, and drives the electrical connection block to slide toward the inside of the installation shell through the connecting rotating rack, and disengages from the electrical connection groove to release the fixation of the battery cell. The installation and disassembly process is simple, which reduces the labor intensity of replacing an independent battery cell. The elastic connection group provided is used The components elastically connect the external connector with the internal connecting column to prevent the battery from being impacted during use and causing the connection solder joint to fall off, thereby ensuring the working stability of the battery; the locking groove and the locking block cooperate with each other to fix the pressure relief plate to the closing plate to seal the internal structure of the battery. When the internal air pressure of the equipment surges, the pressure acts on the pressure relief plate, causing the locking block to be forced to squeeze the locking spring. When the locking block is separated from the locking groove, the pressure relief plate is released, causing the pressure inside the battery to flow out from the pressure relief grooves on both sides of the pressure relief chassis, preventing the internal pressure of the battery from being too high and causing an explosion, thereby eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the overall structure of the present invention;

[0014] Figure 2 for Figure 1 A partial enlarged view of area A in the middle;

[0015] Figure 3 for Figure 1 A partial enlarged view of the middle B area;

[0016] Figure 4 for Figure 1 A partial enlarged view of the middle C area;

[0017] Figure 5 It is a three-dimensional diagram of the overall structure of the present invention;

[0018] Figure 6 It is a schematic diagram of the local structure of the present invention;

[0019] Figure 7 It is an exploded view of part of the structure of the present invention;

[0020] Figure 8 for Figure 7 A partial enlarged view of the middle D area;

[0021] In the figure: 1. Placement bracket; 2. Battery unit; 3. Connecting base frame; 4. First bracket; 5. Connecting top frame; 6. Second bracket; 7. Elastic connection assembly; 8. Pressure relief assembly; 9. Battery mounting assembly; 10. Upper cover; 11. External connector; 12. Closed shell; 13. Tightening bracket; 71. Connecting column; 72. Connecting ring; 73. Connecting spring; 74. Connecting bracket; 81. Pressure relief base frame; 82. Pressure relief groove; 83. Pressure relief plate; 84. Closed plate; 85. Locking groove; 86. Locking block; 90. Mounting shell; 91. Electrical connection groove; 92. Electrical connection block; 93. Connecting rotating frame; 94. Fixed block; 95. Sliding column; 96. Connecting sleeve; 97. Sliding groove; 98. Reset spring; 99. Lifting bracket. Implementation Method

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-8, the present invention provides an embodiment: a lithium-ion power battery with ultra-high charge and discharge rate, including a placement bracket 1, a battery cell 2, a connecting base 3, a first bracket 4, a connecting top bracket 5, a second bracket 6, an elastic connection component 7, a pressure relief component 8, a battery mounting component 9, an upper cover 10, an external joint 11, a closed shell 12 and a tightening bracket 13, the battery cell 2 is slidably connected in the grooves evenly opened on the placement bracket 1, and the bottom of the placement bracket 1 is provided with a connecting base 3, the bottom connecting piece embedded in the connecting base 3 is attached to the bottom of the battery cell 2, and a first bracket 4 is provided on one side of the connecting base 3, a connecting top bracket 5 is provided on the top of the placement bracket 1, and a second bracket 6 is provided on one side of the connecting top bracket 5, the first bracket 4 and the second bracket The frame 6 is provided with a connecting column 71 in the elastic connecting component 7, and the elastic connecting component 7 is composed of a connecting column 71, a connecting ring 72, a connecting spring 73 and a connecting bracket 74. The connecting column 71 is slidably connected to the connecting ring 72, and the outer side of the connecting ring 72 is evenly provided with a connecting spring 73. One end of the connecting spring 73 is fixedly connected to the inner wall of the connecting bracket 74, and the connecting bracket 74 is fixedly sleeved in the groove opened on the top side of the upper cover 10. The top of the connecting bracket 74 is provided with an external joint 11, and the bottom of the upper cover 10 is provided with a closed shell 12, and the bottom side of the upper cover 10 is evenly provided with a tightening bracket 13. The groove opened inside the closed shell 12 is fixedly sleeved to place the bracket 1, the connecting bottom frame 3 and the connecting top frame 5, and the connecting top frame 5 A top connecting piece is embedded in the interior, and an electrical connection slot 91 in the battery mounting assembly 9 is opened in the connecting top frame 5. The battery mounting assembly 9 consists of a mounting shell 90, an electrical connection slot 91, an electrical connection block 92, a connecting rotating frame 93, a fixed block 94, a sliding column 95, a connecting sleeve 96, a sliding slot 97, a reset spring 98 and a lifting bracket 99. The electrical connection slot 91 is slidingly connected to the electrical connection block 92, and the electrical connection block 92 is slidingly connected to the through slots symmetrically opened on both sides of the mounting shell 90. The electrical connection block 92 is connected to one end of the connecting rotating frame 93 through a rotating shaft, and the other end of the connecting rotating frame 93 is rotatably connected to the fixed block 94. The fixed blocks 94 are symmetrically arranged on both sides of the sliding column 95, and the sliding column 95 slides It is connected to the connecting sleeve 96, and sliding grooves 97 are symmetrically provided on both sides of the connecting sleeve 96, and the fixed block 94 is slidably connected to the sliding grooves 97. The connecting sleeve 96 is fixed to the top of the battery cell 2, and the positive pole of the battery cell 2 is electrically connected to the connecting sleeve 96. The top of the connecting sleeve 96 is sleeved in the through hole opened at the top of the mounting shell 90, and the mounting shell 90 is fixedly sleeved on the top of the battery cell 2. A lifting bracket 99 is slidably connected in the groove symmetrically opened at the top of the mounting shell 90, and the through hole opened on the lifting bracket 99 is fixedly sleeved on the top of the sliding column 95. The top of the lifting bracket 99 is fitted to the bottom of the tightening bracket 13. A return spring 98 is provided at the bottom of the sliding column 95, and the return spring 98 is located inside the connecting sleeve 96.The bottom end of the return spring 98 is fitted to the top of the battery cell 2. The bottom of the closed shell 12 is provided with a pressure relief base frame 81 in the pressure relief assembly 8. The pressure relief assembly 8 consists of a pressure relief base frame 81, a pressure relief groove 82, a pressure relief plate 83, a closing plate 84, a locking groove 85 and a locking block 86. Pressure relief grooves 82 are symmetrically provided on both sides of the pressure relief base frame 81, and a pressure relief plate 83 is provided inside the pressure relief base frame 81. Locking grooves 85 are evenly provided on the pressure relief plate 83. The closing plate 84 is slidably connected in the groove provided on the pressure relief plate 83, and the locking block 86 is slidably connected in the connecting slide groove evenly provided on the closing plate 84. One end of the locking block 86 is provided with a locking spring, and the locking spring is located inside the connecting slide groove. The other end of the locking block 86 is cooperatively connected to the locking groove 85. The provided locking spring is conducive to providing elastic force for the locking block 86 so that the locking block 86 extends outward from the connecting slide groove and fits tightly in the locking groove 85.

[0024] Working principle: when in use, the upper cover 10 is fixed on the top of the closed shell 12, the tightening bracket 13 is squeezed on the lifting bracket 99, and the extrusion return spring 98 drives the electrical connection block 92 to slide to the outside of the mounting shell 90 through the connecting rotating bracket 93, and contacts with the electrical connection groove 91, so that the positive pole of the battery cell 2 is electrically connected to the connecting column 71 of the second bracket 6, and at the same time, the negative pole of the battery cell 2 is electrically connected to the connecting column 71 on the first bracket 4, and the connecting column 71 is electrically connected to the external connector 11 by using the provided elastic connecting component 7, and the external power equipment is connected to the external connector 11 to transmit electrical energy to the power battery; the battery cell 2 is supported by the provided placement bracket 1. When replacing the battery cell 2, the upper cover 10 is removed to release the limit of the tightening bracket 13 on the lifting bracket 99, and then the lifting bracket 99 drives the sliding column 95 and the fixed block 94 to slide upward under the elastic force of the return spring 98, and the battery cell 2 is electrically connected to the external connector 11 by using the provided elastic connecting component 7. The frame 93 drives the electrical connection block 92 to slide toward the inside of the mounting shell 90, disengaging from the electrical connection groove 91, and releasing the fixation of the battery unit 2. The installation and disassembly process is simple, and the labor intensity of replacing an independent battery unit 2 is reduced; the elastic connection component 7 is used to elastically connect the external connector 11 with the internal connection column 71 to prevent the battery from being impacted during use and causing the connection welding point to fall off, thereby ensuring the working stability of the battery; the locking groove 85 and the locking block 86 cooperate with each other to fix the pressure relief plate 83 on the closing plate 84 to seal the internal structure of the battery. When the air pressure inside the device surges, the pressure acts on the pressure relief plate 83, causing the locking block 86 to be forced to squeeze the locking spring. When the locking block 86 disengages from the locking groove 85, the fixation of the pressure relief plate 83 is released, causing the pressure inside the battery to flow out from the pressure relief grooves 82 on both sides of the pressure relief base frame 81, preventing the internal pressure of the battery from being too high and causing an explosion, eliminating safety hazards.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A lithium-ion power battery with an ultra-high charge and discharge rate, comprising a placement bracket (1), a battery cell (2), a connecting bottom bracket (3), a first bracket (4), a connecting top bracket (5), a second bracket (6), an elastic connection component (7), a pressure relief component (8), a battery mounting component (9), an upper cover (10), an external connector (11), a closed shell (12) and a tightening bracket (13), characterized in that: The battery unit (2) is slidably connected in the grooves uniformly formed on the placement bracket (1), and a connecting base frame (3) is provided at the bottom of the placement bracket (1), a bottom connecting piece embedded in the connecting base frame (3) is attached to the bottom of the battery unit (2), and a first bracket (4) is provided on one side of the connecting base frame (3), a connecting top frame (5) is provided on the top of the placement bracket (1), and a second bracket (6) is provided on one side of the connecting top frame (5), and a connecting column (71) in the elastic connecting component (7) is provided on both the first bracket (4) and the second bracket (6); The bottom of the upper cover (10) is provided with a closed shell (12), and a tightening bracket (13) is evenly provided on one side of the bottom of the upper cover (10); a groove provided inside the closed shell (12) is fixedly sleeved to receive the bracket (1), the connecting bottom frame (3) and the connecting top frame (5); a top connecting piece is embedded in the interior of the connecting top frame (5), and an electrical connection slot (91) in the battery mounting assembly (9) is provided in the connecting top frame (5); The battery mounting assembly (9) is composed of a mounting shell (90), an electrical connection groove (91), an electrical connection block (92), a connecting rotating frame (93), a fixed block (94), a sliding column (95), a connecting sleeve (96), a sliding groove (97), a return spring (98) and a lifting bracket (99); the electrical connection block (92) is slidably connected in the electrical connection groove (91), and the electrical connection block (92) is slidably connected in the through grooves symmetrically opened on both sides of the mounting shell (90); the electrical connection block (92) is connected to one end of the connecting rotating frame (93) through a rotating shaft, and the other end of the connecting rotating frame (93) is rotatably connected to the fixed block (94); The fixed blocks (94) are symmetrically arranged on both sides of the sliding column (95), and the sliding column (95) is slidably connected in the connecting sleeve (96). Sliding grooves (97) are symmetrically opened on both sides of the connecting sleeve (96), and the fixed blocks (94) are slidably connected in the sliding grooves (97). The connecting sleeve (96) is fixed on the top of the battery unit (2), and the positive pole of the battery unit (2) is electrically connected to the connecting sleeve (96); The top of the connecting sleeve (96) is sleeved in the through hole opened in the top of the mounting shell (90), and the mounting shell (90) is fixedly sleeved on the top of the battery unit (2). A lifting bracket (99) is slidably connected in the groove symmetrically opened in the top of the mounting shell (90), and the through hole opened on the lifting bracket (99) is fixedly sleeved on the top of the sliding column (95). The top of the lifting bracket (99) is fitted on the bottom of the tightening bracket (13). A return spring (98) is provided at the bottom end of the sliding column (95), and the return spring (98) is located inside the connecting sleeve (96). The bottom end of the return spring (98) is fitted on the top of the battery unit (2).

2. The ultra-high charge and discharge rate lithium-ion power battery according to claim 1, characterized in that: The elastic connection assembly (7) consists of a connection column (71), a connection ring (72), a connection spring (73) and a connection bracket (74). The connection column (71) is slidably connected to the connection ring (72), and the connection spring (73) is evenly arranged on the outside of the connection ring (72). One end of the connection spring (73) is fixedly connected to the inner wall of the connection bracket (74), and the connection bracket (74) is fixedly sleeved in a groove opened on one side of the top of the upper cover (10). The top of the connection bracket (74) is provided with an external joint (11).

3. The ultra-high charge and discharge rate lithium-ion power battery according to claim 1, characterized in that: The bottom of the closed shell (12) is provided with a pressure relief base frame (81) in the pressure relief assembly (8). The pressure relief assembly (8) is composed of a pressure relief base frame (81), a pressure relief groove (82), a pressure relief plate (83), a closing plate (84), a locking groove (85) and a locking block (86). The pressure relief grooves (82) are symmetrically provided on both sides of the pressure relief base frame (81), and a pressure relief plate (83) is provided inside the pressure relief base frame (81). The locking grooves (85) are evenly provided on the pressure relief plate (83).

4. The ultra-high charge and discharge rate lithium-ion power battery according to claim 3, characterized in that: A closing plate (84) is slidably connected to the groove formed on the pressure relief plate (83), and a locking block (86) is slidably connected to the connecting chute formed evenly on the closing plate (84). A locking spring is provided at one end of the locking block (86), and the locking spring is located inside the connecting chute. The other end of the locking block (86) is fitted and connected to the locking groove (85).

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