Flexible package lithium ion battery

Abstract

The utility model relates to the technical field of lithium ion batteries, and discloses a flexible package lithium ion battery which comprises a battery body and four auxiliary plates I. The front side and the rear side of the right end of the battery body are fixedly connected with a positive pole piece and a negative pole piece, and a plurality of vent holes are formed in the two auxiliary plates I; a plurality of first springs are fixedly connected to the side, away from the battery body, of the first auxiliary plate, a second auxiliary plate is slidably connected to the side, close to the battery body, of the first auxiliary plate, a plurality of second springs are fixedly connected to the left end of the second auxiliary plate, and a protection soft shell is fixedly connected to the ends, away from the second auxiliary plate, of the second springs; the side, away from the first auxiliary plate, of the protection soft shell is fixedly connected with a heat dissipation plate. According to the soft package lithium battery protection device, the soft package lithium battery is protected in all directions, the risk that the battery is damaged when being stressed or collided is reduced, the protection soft shell can be quickly mounted and dismounted, and a user can conveniently sleeve the battery body with the protection soft shell.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a soft-package lithium ion battery. Background Art

[0002] Lithium-ion battery is a rechargeable battery that mainly relies on the movement of lithium ions between the positive electrode and the negative electrode to work. During the charge and discharge process, lithium ions are embedded and de-embedded between the two electrodes. When charging, lithium ions are de-embedded from the positive electrode and embedded into the negative electrode through the electrolyte. The negative electrode is in a lithium-rich state. The opposite is true during discharge. Some existing lithium-ion batteries use colloidal polymers as electrolytes. This type of polymer lithium-ion battery has the advantages of being thin, arbitrary in area and arbitrary in shape. Therefore, soft packaging is often used to manufacture the battery casing, which can improve the battery's specific capacity.

[0003] When some existing lithium-ion batteries are subjected to external forces such as extrusion and impact, the aluminum-plastic film on the outer layer of the soft-package lithium-ion battery cannot protect the soft-package lithium-ion battery well and is prone to rupture, which affects the service life of the soft-package lithium-ion battery. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a soft-package lithium-ion battery, aiming to improve the problem in the prior art that the outer layer of the lithium-ion battery cannot protect the lithium-ion battery when it is squeezed or impacted by external force.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a soft-package lithium-ion battery, comprising a battery body and four auxiliary plates 1, the front and rear sides of the right end of the battery body are fixedly connected with positive and negative electrode sheets, a plurality of ventilation holes are opened inside the two auxiliary plates 1, a side of the auxiliary plate 1 away from the battery body is fixedly connected with a plurality of springs 1, a side of the auxiliary plate 1 close to the battery body is slidably connected with an auxiliary plate 2, a left end of the auxiliary plate 2 is fixedly connected with a plurality of springs 2, an end of the spring 2 away from the auxiliary plate 2 is fixedly connected with a protective soft shell, a side of the protective soft shell away from the auxiliary plate 1 is fixedly connected with a heat sink, a card slot is opened on the upper and lower sides of the front protective soft shell, a ring is fixedly connected inside the card slot, and a fixed component is slidably connected inside the ring.

[0006] Furthermore, both upper and lower sides of the protective soft shell at the rear side are fixedly connected with a clamping block, and a clamping hole is opened in the middle of the clamping block.

[0007] Furthermore, the side of the spring 1 away from the auxiliary plate 1 is fixedly connected to the inner wall of the protective soft shell, and the outside of the battery body is slidably connected to the side of the auxiliary plate 1 close to the battery body.

[0008] Furthermore, both the front and rear sides of the battery body are slidably connected to the side of the heat sink close to the auxiliary plate 1, and the outer wall of the clamping block is engaged with the inner wall of the clamping slot.

[0009] Furthermore, the fixing assembly includes a clamp, a spring three, and a pull ring. The outside of the clamp is slidably connected to the inner wall of the ring, the end of the clamp away from the clamping block is rotatably connected to the pull ring, and the spring three is set on the outside of the clamp.

[0010] Furthermore, one end of the spring three is fixedly connected to the end of the ring closer to the inner side, and the other end of the spring three is fixedly connected to the middle part of the clamp.

[0011] Furthermore, the rear side of the pull ring is engaged with the slot.

[0012] Furthermore, the left end of the battery body is in contact with the right end of the auxiliary plate 2, and the front and rear sides of the auxiliary plate 1 are in contact with the side of the heat sink close to the battery body.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the cooperation of the protective soft shell, auxiliary plate 1, vent hole, auxiliary plate 2, spring 1 and other components, all-round protection of the soft-pack lithium battery is achieved, which effectively prevents battery corrosion and reduces the risk of damage to the battery when subjected to force or collision.

[0015] 2. In the utility model, the quick installation and removal of the protective soft shell is realized through the cooperation of the pull ring, the slot, the spring, the block, the hole and other components, so that the user can conveniently put the protective soft shell on the outside of the battery body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a soft-package lithium-ion battery proposed by the utility model;

[0017] Figure 2 This is a structural schematic diagram of a card slot for a soft-package lithium-ion battery proposed by the utility model;

[0018] Figure 3 This is a schematic structural diagram of a card hole for a soft-package lithium-ion battery proposed by the utility model;

[0019] Figure 4 The utility model is a cross-sectional schematic diagram of a card block of a soft-package lithium-ion battery.

[0020] Legend:

[0021] 1. Battery body; 2. Positive and negative electrodes; 3. Auxiliary plate 1; 4. Vent; 5. Spring 1; 6. Auxiliary plate 2; 7. Spring 2; 8. Protective soft shell; 9. Heat sink; 10. Card slot; 11. Ring; 12. Fixing assembly; 1201. Card piece; 1202. Spring 3; 1203. Pull ring; 13. Card block; 14. Card hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-4 The utility model provides an embodiment: a soft-package lithium-ion battery, comprising a battery body 1 and four auxiliary plates 3, the front and rear sides of the right end of the battery body 1 are fixedly connected with positive and negative electrode sheets 2, and a plurality of vent holes 4 are provided inside the two auxiliary plates 3. This design is to allow the heat of the battery body 1 to be dissipated during use. A plurality of springs 5 ​​are fixedly connected to the side of the auxiliary plate 3 away from the battery body 1. The spring 5 is designed to support the auxiliary plate 3 and to reduce the external force impact on the battery body 1 and increase the service life of the battery body 1. An auxiliary plate 26 is slidably connected to the side of the auxiliary plate 3 close to the battery body 1. The auxiliary plate 26 is also designed to protect the battery body 1 and reduce the external force impact on the battery body 1. A plurality of springs 27 are fixedly connected to the left end of the auxiliary plate 26. The auxiliary plate 26 is squeezed by the battery body 1 to drive the spring 27 to be compressed. The spring 27 is away from the auxiliary plate One end of the second 6 is fixedly connected to a protective soft shell 8, and the protective soft shell 8 is designed to provide multi-layer protection for the battery body 1. The side of the protective soft shell 8 away from the auxiliary plate 3 is fixedly connected to a heat sink 9, and the heat sink 9 is designed to quickly dissipate heat from the battery body 1 during operation. Slots 10 are provided on the upper and lower sides of the front protective soft shell 8. The slots 10 are designed so that the two protective soft shells 8 can be snapped together, so that the user can put the protective soft shell 8 on the outside of the battery body 1 conveniently. A ring 11 is fixedly connected to the inside of the slot 10, and a fixing component 12 is slidably connected to the inside of the ring 11. The ring 11 is designed to fix the fixing component 12. The left end of the battery body 1 is fitted with the right end of the auxiliary plate 2 6. This design is to enable the auxiliary plate 2 6 to better protect the battery body 1, and the front and rear sides of the auxiliary plate 3 are fitted with the side of the heat sink 9 close to the battery body 1, so that the battery body 1 can dissipate heat better.

[0024] refer to Figure 2 The side of the spring 5 away from the auxiliary plate 3 is fixedly connected to the inner wall of the protective soft shell 8. This design allows the spring 5 to be compressed. The outside of the battery body 1 is slidably connected to the side of the auxiliary plate 3 close to the battery body 1. This design prevents the battery body 1 from falling off the inside of the protective soft shell 8. The front and rear sides of the battery body 1 are both slidably connected to the side of the heat sink 9 close to the auxiliary plate 3. This design allows the battery body 1 to dissipate heat better.

[0025] refer to Figure 3 The upper and lower sides of the rear protective soft shell 8 are fixedly connected with a card block 13, which is designed so that the two protective soft shells 8 can be snapped together. A card hole 14 is opened in the middle of the card block 13, which is designed so that the two protective soft shells 8 can be better fixed.

[0026] refer to Figure 4 The fixing assembly 12 includes a clamp 1201, a spring 1202, and a pull ring 1203. The outside of the clamp 1201 is slidably connected to the inner wall of the ring 11. The ring 11 fixes the clamp 1201 to prevent the clamp 1201 from sliding out of the slot 10. The end of the clamp 1201 away from the block 13 is rotatably connected to the pull ring 1203. The pull ring 1203 pulls the clamp 1201. The spring 1202 is sleeved on the outside of the clamp 1201. Three 1202 drives the clamp 1201 to reset, one end of spring three 1202 is fixedly connected to one end of the ring 11 close to the block 13, and the other end of spring three 1202 is fixedly connected to the middle of the clamp 1201. Spring three 1202 limits the sliding range of the clamp 1201, the rear side of the pull ring 1203 is engaged with the slot 10, and the outer wall of the block 13 is engaged with the inner wall of the slot 10. This design is to better fix the two protective soft shells 8.

[0027] Working principle: first, the user aligns the battery body 1 with the half of the protective soft shell 8 with the pull ring 1203 and slides it into the interior of the protective soft shell 8. At this time, the auxiliary plate 1 3 and the auxiliary plate 2 6 will be squeezed by the battery body 1 to exert pressure on the spring 1 5 and the auxiliary plate 2 6 to expand slightly outward, and then first buckle out the pull ring 1203 of the protective soft shell 8, and then pull the pull ring 1203 to compress the card 1201, and then align the card block 13 of the other half of the protective soft shell 8 with the card slot 10, and then release the pull ring 1203. After releasing, the card 1201 will be engaged with the card hole 14 in the middle of the card block 13 under the action of the elastic force of the spring three 1202, so that the two protective soft shells 8 are quickly fixed to the outside of the battery body 1, which can buffer the battery body 1 when it is impacted or dropped by external force, and is convenient for users to operate.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A soft-package lithium-ion battery, comprising a battery body (1) and four auxiliary plates (3), characterized in that: The front and rear sides of the right end of the battery body (1) are fixedly connected with positive and negative electrode sheets (2); a plurality of vent holes (4) are provided inside the two auxiliary plates (3); a plurality of springs (5) are fixedly connected to the side of the auxiliary plate (3) away from the battery body (1); a second auxiliary plate (6) is slidably connected to the side of the auxiliary plate (3) close to the battery body (1); a plurality of springs (7) are fixedly connected to the left end of the second auxiliary plate (6); a protective soft shell (8) is fixedly connected to the end of the second spring (7) away from the second auxiliary plate (6); a heat sink (9) is fixedly connected to the side of the protective soft shell (8) away from the auxiliary plate (3); a slot (10) is provided on the upper and lower sides of the front protective soft shell (8); a ring (11) is fixedly connected to the inside of the slot (10); a fixing component (12) is slidably connected to the inside of the ring (11).

2. A soft package lithium ion battery according to claim 1, characterized in that: The upper and lower sides of the protective soft shell (8) at the rear side are both fixedly connected with a clamping block (13), and a clamping hole (14) is opened in the middle of the clamping block (13).

3. A soft package lithium ion battery according to claim 1, characterized in that: The side of the spring 1 (5) away from the auxiliary plate 1 (3) is fixedly connected to the inner wall of the protective soft shell (8), and the outside of the battery body (1) is slidably connected to the side of the auxiliary plate 1 (3) close to the battery body (1).

4. A soft package lithium ion battery according to claim 2, characterized in that: The front and rear sides of the battery body (1) are both slidably connected to one side of the heat dissipation plate (9) close to the auxiliary plate (3), and the outer wall of the clamping block (13) is clamped with the inner wall of the clamping slot (10).

5. The soft package lithium ion battery according to claim 1, characterized in that: The fixing assembly (12) comprises a clamping member (1201), a spring three (1202), and a pull ring (1203); the outside of the clamping member (1201) is slidably connected to the inner wall of the sleeve ring (11); one end of the clamping member (1201) away from the clamping block (13) is rotatably connected to the pull ring (1203); and the spring three (1202) is sleeved on the outside of the clamping member (1201).

6. A soft package lithium ion battery according to claim 5, characterized in that: One end of the spring three (1202) is fixedly connected to the end of the ring (11) close to (1204), and the other end of the spring three (1202) is fixedly connected to the middle part of the clamp (1201).

7. A soft package lithium ion battery according to claim 5, characterized in that: The rear side of the pull ring (1203) is engaged with the locking groove (10).

8. The soft package lithium ion battery according to claim 1, characterized in that: The left end of the battery body (1) is in contact with the right end of the auxiliary plate 2 (6), and the front and rear sides of the auxiliary plate 1 (3) are in contact with the side of the heat dissipation plate (9) close to the battery body (1).

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