A lithium battery with an anti-desoldering structure

Abstract

The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery with an anti-desoldering structure, comprising a base plate, a protective sleeve provided on the upper end of the base plate, buffer springs uniformly provided inside the base plate, a support plate provided on the upper part of the buffer spring, a battery core splint uniformly provided on the upper part of the support plate, a soft-pack battery core provided between two adjacent battery core splints, pole ears symmetrically provided on the upper end of the soft-pack battery core, connection slots obliquely provided on both sides of the pole ears, a first end cover and a second end cover provided on the left and right battery core splints respectively, a first fixed protective plate provided on one side of the upper and lower ends of the first end cover, a connecting strip provided on one side of the first fixed protective plate, a second fixed protective plate provided on one side of the upper and lower ends of the second end cover, and a through slot matching the connecting strip provided on the first fixed protective plate. The present invention can avoid the desoldering phenomenon caused by false soldering, and at the same time avoid damage to the lithium battery caused by vibration.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery with an anti-desoldering structure. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloys as the positive and negative electrode materials and a non-aqueous electrolyte solution. Soft-pack lithium batteries are a common type of lithium battery used in a variety of fields and are widely used in electric vehicles, hybrid vehicles, and other equipment. Soft-pack lithium batteries typically consist of multiple interconnected battery blocks or cells, connected by specific connectors or processes to form a single, integrated soft-pack lithium battery.

[0003] Traditional soft-pack lithium batteries are composed of multiple cells connected together, typically through welding, which can be laser welding, resistance welding, or ultrasonic welding. During the actual welding process, poor welds or cold joints can easily occur due to problems with the welder's skills or the welding equipment. Later in use, vibration can easily cause desoldering, shortening the battery's lifespan. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a lithium battery with an anti-desoldering structure, so that it can avoid the desoldering phenomenon caused by false soldering and avoid damage to the lithium battery caused by vibration.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A lithium battery with an anti-desoldering structure is designed, comprising a bottom plate, a protective sleeve is provided at the upper end of the bottom plate, and buffer springs are evenly provided inside the bottom plate; a support plate is provided on the upper part of the buffer spring, and battery cell splints are evenly provided on the upper part of the support plate; a soft-pack battery cell is provided between two adjacent battery cell splints, and pole ears are symmetrically provided at the upper end of the soft-pack battery cell, and connecting slots are obliquely opened on both sides of the pole ears; the battery cell splints at the left and right ends are respectively provided with a first end cover and a second end cover; a first fixed protective plate is sleeved on one side of the upper and lower ends of the first end cover, and a connecting strip is provided on one side of the first fixed protective plate; a second fixed protective plate is sleeved on one side of the upper and lower ends of the second end cover, and the second fixed protective plate is provided with a through groove matching the connecting strip; a connecting screw is provided on the lower part of the second fixed protective plate, and the connecting screw passes through the second fixed protective plate and the connecting strip and is threadedly connected to the second end cover; a conductive plate is provided on the upper part of the pole ear, and the conductive plate The upper surface of the conductive column is provided with a conductive column; the lower part of the conductive plate is evenly provided with mounting sleeves, and the lower end of the mounting sleeve is symmetrically provided with a card plate matching the connecting slot; the upper end of the protective sleeve is provided with a cover plate, and the inside of the cover plate is provided with an annular baffle; the upper part of the cover plate is provided with a conductive rod, and the lower end of the conductive rod is inserted into the conductive column; the connecting strip includes a connecting block, a connecting canvas, a positioning column and a clamping head; a connecting canvas and a connecting block are spaced apart on one side of the first fixed protective plate, and the connecting block is threadedly connected with a positioning column near the side of the battery cell splint; the battery cell splint is provided with a positioning hole matching the positioning column, and the battery cell splint is provided with a card slot connected to the positioning hole; the upper end of the positioning column is provided with a clamping head matching the card slot; the second fixed protective plate is provided with a through groove matching the connecting block, and the lower part of the second fixed protective plate is provided with a connecting screw, which passes through the second fixed protective plate and the connecting block and is threadedly connected to the second end cover.

[0007] Preferably, guide sleeves are evenly arranged in the bottom plate, and a buffer pad is provided on the upper end of the guide sleeve; a guide rod matching the guide sleeve is provided on the lower surface of the support plate; the length of the guide sleeve is greater than the length of the guide rod.

[0008] Preferably, a positioning hole is provided on the left side of the battery core clamp and the left side of the second end cover; and a positioning rod matching the positioning hole is provided on the right side of the battery core clamp and the right side of the first end cover.

[0009] Preferably, heat sinks are evenly arranged on the outside of the protective sleeve, and reinforcing ribs are evenly arranged between adjacent heat sinks; sealing grooves are opened at the upper and lower ends of the protective sleeve, and sealing strips with U-shaped cross-sections are arranged in the sealing grooves; the bottom plate and the cover plate are both provided with pressure strips matching the sealing strips.

[0010] Preferably, the outer side of the upper portion of the conductive plate is wrapped with an insulating rubber layer; and a sealing sleeve is embedded at the joint between the cover plate and the conductive rod.

[0011] The lithium battery with an anti-desoldering structure proposed by the present invention has the following beneficial effects:

[0012] 1. Use the connecting strips to bind and fix multiple battery core splints to avoid desoldering of the battery core splints.

[0013] 2. The buffer springs evenly arranged at the bottom of the support plate can buffer the force on the lithium battery pack on the top of the support plate, thereby avoiding damage to the lithium battery caused by vibration.

[0014] 3. By evenly arranging heat sinks on the outside of the protective cover, the heat generated by the lithium battery during charging and discharging can be quickly dissipated, thereby preventing the lithium battery from overheating and swelling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a lithium battery with an anti-desoldering structure proposed by the present invention;

[0016] Figure 2 This is a schematic diagram of the left side structure of a lithium battery with an anti-desoldering structure proposed by the present invention;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure at point A of a lithium battery with an anti-desoldering structure proposed by the present invention;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure at point B of a lithium battery with an anti-desoldering structure proposed by the present invention;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure at point C of a lithium battery with an anti-desoldering structure proposed by the present invention;

[0020] Figure 6 This is a schematic diagram of the enlarged structure of part D of a lithium battery with an anti-desoldering structure proposed by the present invention;

[0021] Figure 7 This is a schematic diagram of the enlarged structure of part E in a lithium battery with an anti-desoldering structure proposed by the present invention.

[0022] In the figure: base plate 1, protective sleeve 2, buffer spring 3, support plate 4, battery cell splint 5, soft-pack battery cell 6, pole ear 7, connecting slot 70, first end cover 8, second end cover 9, first fixed protective plate 10, connecting strip 11, connecting block 110, connecting canvas 111, positioning column 112, clamping head 113, second fixed protective plate 12, connecting screw 13, conductive plate 14, conductive column 15, mounting sleeve 16, clamping plate 17, cover plate 18, annular baffle 19, guide sleeve 20, buffer pad 21, guide rod 22, positioning socket 23, positioning rod 24, heat sink 25, reinforcing rib 26, sealing strip 27, pressure strip 28, insulating rubber layer 29, conductive rod 30, sealing sleeve 31. DETAILED DESCRIPTION

[0023] 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.

[0024] Reference Figure 1-7 A lithium battery with an anti-desoldering structure includes a base plate 1, a protective sleeve 2 is provided at the upper end of the base plate 1, a buffer spring 3 is evenly provided inside the base plate 1, a support plate 4 is provided on the upper part of the buffer spring 3, a guide sleeve 20 is evenly provided inside the base plate 1, a buffer pad 21 is provided at the upper end of the guide sleeve 20, and a guide plug 22 matching the guide sleeve 20 is provided on the lower surface of the support plate 3. The length of the guide sleeve 20 is greater than the length of the guide plug 22. The support plate 4 is buffered by the buffer spring 3, and the guiding effect of the guide sleeve 20 and the guide plug 22 is used to keep the support plate 4 and the base plate 1 parallel and slide up and down. At the same time, the buffer pad 21 makes the support plate 4 flexibly contact with the guide sleeve 20 to avoid damage by hard collision with the guide sleeve 20 when the support plate 4 slides down.

[0025] Battery cell splints 5 are evenly arranged on the upper part of the support plate 4, and soft-pack battery cells 6 are arranged between two adjacent battery cell splints 5. Pole ears 7 are symmetrically arranged on the upper ends of the soft-pack battery cells 6, and connecting slots 70 are obliquely opened on both sides of the pole ears 7. The battery cell splints 5 at the left and right ends are respectively provided with a first end cover 8 and a second end cover 9. Positioning holes 23 are opened on the left side of the battery cell splint 5 and the left side of the second end cover 9. Positioning rods 24 matching the positioning holes 23 are provided on the right side of the battery cell splint 5 and the right side of the first end cover 8. Through the plug-in cooperation between the positioning holes 23 and the positioning rods 24, the battery cell splint 5, the first end cover 8 and the second end cover 9 are made more stable, thereby facilitating the welding of lithium battery assemblies.

[0026] A first fixed protective plate 10 is sleeved on one side of the upper and lower ends of the first end cover 8, heat sinks 25 are evenly provided on the outside of the protective sleeve 2, and reinforcing ribs 26 are evenly provided between adjacent heat sinks 25. Sealing grooves are provided at the upper and lower ends of the protective sleeve 2, and a sealing strip 27 with a U-shaped cross section is provided in the sealing groove. The bottom plate 1 and the cover plate 18 are both provided with a pressure strip 28 that matches the sealing strip 27. The heat sink 25 allows the heat generated by the lithium battery during charging and discharging to be quickly dissipated, thereby avoiding overheating and swelling damage of the lithium battery. At the same time, the sealing strip 27 and the pressure strip 28 are sealed together to make the lithium battery pack waterproof and sealed.

[0027] A connecting strip 11 is provided on one side of the first fixed protective plate 10, and a second fixed protective plate 12 is sleeved on one side of the upper and lower ends of the second end cover 9. The second fixed protective plate 12 is provided with a through groove matching the connecting strip 11, and a connecting screw 13 is provided at the lower part of the second fixed protective plate 12. The connecting screw 13 passes through the second fixed protective plate 12 and the connecting strip 11 and is threadedly connected to the second end cover 9. The connecting strip 11 includes a connecting block 110, a connecting canvas 111, a positioning plug 112 and a clamp 113. A connecting canvas 111 and a connecting block 110 are spaced apart on one side of the first fixed protective plate 10, and the connecting block 110 is threadedly connected to the positioning plug near the side of the battery splint 5. Column 112, the battery splint 5 is provided with a positioning hole 13 that matches the positioning column 112, the battery splint 5 is provided with a card slot connected to the positioning hole 13, the upper end of the positioning column 112 is provided with a card head 113 that matches the card slot, the second fixed protective plate 12 is provided with a through groove that matches the connecting block 110, and the lower part of the second fixed protective plate 12 is provided with a connecting screw 13, which passes through the second fixed protective plate 12 and the connecting block 110 and is threadedly connected to the second end cover 9. Through the plug-in cooperation between the positioning column 112 and the positioning hole 13, the battery splint 5 is positioned, connected and fixed, thereby avoiding the battery splint from being desoldered.

[0028] A conductive plate 14 is provided on the upper part of the pole ear 7, and a conductive column 15 is provided on the upper surface of the conductive plate 14. A mounting sleeve 16 is evenly provided on the lower part of the conductive plate 14, and a card plate 17 matching the connecting slot 70 is symmetrically provided at the lower end of the mounting sleeve 16. A cover plate 18 is provided on the upper end of the protective sleeve 2, and a conductive rod 30 is provided on the upper part of the cover plate 18. The lower end of the conductive rod 30 is inserted into the conductive column 15. The outer side of the upper part of the conductive plate 14 is wrapped with an insulating rubber sleeve 29, and a sealing sleeve 31 is inlaid at the joint between the cover plate 18 and the conductive rod 30. The conductive plate 14 is fixed to the multiple pole ears 7 by the card plate 17 and the connecting slot 70. At the same time, the sliding connection between the conductive rod 30 and the conductive column 15 makes it possible to slide the lithium battery pack downward without affecting the power supply of the lithium battery.

[0029] Working principle: During assembly, the positioning socket 23 is plugged into the positioning rod 24 to make the battery cell splint 5, the first end cover 8 and the second end cover 9 more stable, thereby facilitating the welding of the lithium battery assembly. At the same time, the positioning column 112 is plugged into the positioning socket 13 to connect and fix multiple battery cell splints 5 through the connecting block 110 and the connecting canvas 111, thereby avoiding the desoldering phenomenon of the battery cell splints.

[0030] During operation, the buffer spring 3 is used to buffer the support plate 4, and the guiding effect of the guide sleeve 20 and the guide rod 22 is used to make the support plate 4 and the base plate 1 slide up and down in parallel. At the same time, the buffer pad 21 makes the support plate 4 and the guide sleeve 20 flexibly contact to avoid damage caused by hard collision with the guide sleeve 20 when the support plate 4 slides down. The heat sink 25 is used to quickly dissipate the heat generated by the lithium battery during charging and discharging, thereby avoiding damage caused by overheating of the lithium battery due to swelling. At the same time, the sealing connection between the sealing strip 27 and the pressure strip 28 is used to make the lithium battery pack waterproof and sealed.

[0031] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A lithium battery with an anti-desoldering structure, comprising a bottom plate, characterized in that: A protective sleeve is provided at the upper end of the bottom plate, and buffer springs are evenly provided inside the bottom plate; a supporting plate is provided on the upper part of the buffer spring, and battery cell splints are evenly provided on the upper part of the supporting plate; a soft-pack battery cell is provided between two adjacent battery cell splints, and pole ears are symmetrically provided on the upper end of the soft-pack battery cell, and connecting slots are obliquely opened on both sides of the pole ears; the battery cell splints at the left and right ends are respectively provided with a first end cover and a second end cover; a first fixed protective plate is sleeved on one side of the upper and lower ends of the first end cover, and a connecting strip is provided on one side of the first fixed protective plate; a second fixed protective plate is sleeved on one side of the upper and lower ends of the second end cover, and a through groove matching the connecting strip is opened on the second fixed protective plate; a connecting screw is provided on the lower part of the second fixed protective plate, and the connecting screw passes through the second fixed protective plate and the connecting strip and is threadedly connected to the second end cover; a conductive plate is provided on the upper part of the pole ear, and a conductive column is provided on the upper surface of the conductive plate; The lower part of the conductive plate is evenly provided with mounting sleeves, and the lower end of the mounting sleeve is symmetrically provided with a card plate matching the connecting slot; the upper end of the protective sleeve is provided with a cover plate, and the inside of the cover plate is provided with an annular baffle; the upper part of the cover plate is provided with a conductive rod, and the lower end of the conductive rod is inserted into the conductive column; the connecting strip includes a connecting block, a connecting canvas, a positioning column and a clamping head; the first fixed protective plate is provided with a connecting canvas and a connecting block at intervals on one side, and the connecting block is threadedly connected with a positioning column close to the side of the battery cell splint; the battery cell splint is provided with a positioning hole matching the positioning column, and the battery cell splint is provided with a card slot connected to the positioning hole; the upper end of the positioning column is provided with a clamping head matching the card slot; the second fixed protective plate is provided with a through groove matching the connecting block, and the lower part of the second fixed protective plate is provided with a connecting screw, which passes through the second fixed protective plate and the connecting block and is threadedly connected to the second end cover.

2. The lithium battery with an anti-stripping structure according to claim 1, characterized in that: Guide sleeves are evenly arranged in the bottom plate, and buffer pads are arranged on the upper ends of the guide sleeves; guide rods matching the guide sleeves are arranged on the lower surface of the support plate; the length of the guide sleeves is greater than that of the guide rods.

3. The lithium battery with an anti-stripping structure according to claim 1, wherein: The left side of the battery core clamp and the left side of the second end cover are both provided with positioning holes; the right side of the battery core clamp and the right side of the first end cover are both provided with positioning rods matching the positioning holes.

4. The lithium battery with an anti-stripping structure according to claim 1, wherein: The outer side of the protective sleeve is evenly provided with heat sinks, and reinforcing ribs are evenly provided between adjacent heat sinks; sealing grooves are opened at the upper and lower ends of the protective sleeve, and sealing strips with U-shaped cross sections are arranged in the sealing grooves; the bottom plate and the cover plate are both provided with pressure strips matching the sealing strips.

5. The lithium battery with an anti-desoldering structure according to claim 1, characterized in that: The outer side of the upper part of the conductive plate is wrapped with an insulating rubber layer; the joint between the cover plate and the conductive rod is inlaid with a sealing sleeve.

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