A lithium ion battery safety protection structure and lithium ion battery

Abstract

The present invention belongs to the technical field of lithium-ion batteries, and particularly relates to a lithium-ion battery safety protection structure and a lithium-ion battery, comprising a plastic upper bracket and a plastic lower bracket, wherein the plastic upper bracket and the plastic lower bracket are spirally clamped, and an electrode packaging assembly is positioned between the plastic upper bracket and the plastic lower bracket, the plastic lower bracket is fixed to the upper end of a polymer battery cell, the electrode packaging assembly is electrically connected to the polymer battery cell, and a steel shell is sleeved on the outer sides of the plastic upper bracket, the plastic lower bracket and the polymer battery cell, and the plastic upper bracket and the plastic lower bracket play a role in protecting the electrode packaging assembly to prevent external forces from impacting the electrode packaging assembly and causing damage to the electrode packaging assembly. The steel shell is made of steel and has relatively strong hardness, and is sleeved on the outer sides of the polymer battery cell, the plastic upper bracket and the plastic lower bracket to prevent external forces from impacting the polymer battery cell and causing damage to the polymer battery cell.

Description

Technical Field

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

[0002] The rechargeable 1.5V lithium-ion batteries currently on the market are mainly used to power small devices and instrumentation tools, such as smoke alarms, multimeters, microphones, toys, etc., while polymer batteries use a soft-pack design, and there is no fixed platform in the structure to position the positive hardware and TYPE-C female socket components. Therefore, when impacted by external forces, the positive hardware and TYPE-C female socket components are easy to fall off or break;

[0003] For example, the lithium-ion secondary battery with patent application number CN202010397716.5 includes a soft-package lithium-ion battery cell, a steel shell, a TYPE C USB interface, a protection IC, an integrated IC, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an inductor, a red LED light, a blue LED light, plastic parts, a round rigid FR-4 substrate, a square rigid FR-4 substrate, a metal cap, an insulating tape, a negative metal strip of the battery cell and a positive wire of the battery cell, realizing the multi-in-one functions of TYPE C USB interface charging, constant voltage output, charging management and protection, overcharge, over-discharge and over-current protection. However, the disadvantage of this technical solution is that there is no fixed platform in the structure to position the TYPE C USB interface, the protection IC, the integrated IC, etc. Therefore, when subjected to external force impact, the TYPE C USB interface, the protection IC, the integrated IC, etc. are easy to fall off or be damaged. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium ion battery safety protection structure and a lithium ion battery to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A lithium-ion battery safety protection structure comprises a plastic upper bracket and a plastic lower bracket, wherein the plastic upper bracket and the plastic lower bracket are screw-connected, and an electrode packaging assembly is positioned between the plastic upper bracket and the plastic lower bracket, the plastic lower bracket is fixed to the upper end of a polymer battery cell, the electrode packaging assembly is electrically connected to the polymer battery cell, and a steel shell is provided on the outer sides of the plastic upper bracket, the plastic lower bracket and the polymer battery cell.

[0006] Furthermore, the outer side of the steel shell is covered with a PET film.

[0007] Furthermore, a socket is provided on the steel shell, and the electrode packaging assembly is connected to an external power line through the socket to charge the polymer battery cell.

[0008] Furthermore, it also includes a safety protection component 1, which includes a middle cylinder component, a top cover component is clamped on the upper end of the middle cylinder component, a clamping component is slidably connected to the middle of the middle cylinder component, a rotating cylinder component is rotatably connected to the lower end of the middle cylinder component, the clamping component is threadedly connected to the rotating cylinder component, the clamping component is clamped on the outside of the steel shell, the lower end of the steel shell is against the bottom of the middle cylinder component, and the upper end of the plastic upper bracket is against the inside of the top cover component.

[0009] Furthermore, the middle cylinder assembly includes a middle cylinder, a slot is provided at the upper end of the middle cylinder, a top cover assembly is clamped in the slot, the top cover assembly is clamped and connected with a limit block, the limit block slides in the middle cylinder, a spring 1 is provided between the limit block and the middle cylinder, the middle cylinder is slidably connected with the clamping assembly, the middle cylinder is rotatably connected with the rotating cylinder assembly, the inner bottom of the middle cylinder is connected with the metal plate 1 through a spring 3, the outer bottom of the middle cylinder is fixed with a metal plate 2, the metal plates 1 and 2 are connected by a connecting line, and the lower end of the steel shell is against the metal plate 1.

[0010] Furthermore, the top cover assembly includes a top cover, a top opening is provided at the upper end of the top cover, a socket is provided on the side of the top cover, a slip ring is rotatably connected to the top cover, an inner clamping block is provided inside the top cover, after the top cover is inserted into the upper end of the middle cylinder, the top cover is rotated, the inner clamping block is clamped into the clamping slot, the triangular protrusion provided on the top cover is clamped and connected with the limit block, and the upper end of the plastic upper bracket is against the inside of the top cover.

[0011] Further, the clamping assembly includes four slide rods, the four slide rods are all slidably connected to the middle cylinder, the lower ends of the four slide rods are fixedly connected by threaded rings, the threaded rings are slidably connected to the middle cylinder, the threaded rings are threadedly connected to the rotating cylinder assembly, the slide rods are rotatably connected to the upper rotating rod, the upper rotating rod is slidably connected to the lower rotating rod, a spring 2 is provided between the upper rotating rod and the lower rotating rod, the lower rotating rod is rotatably connected to the clamping plate, the bottom of the clamping plate slides in the middle cylinder, an outer bending rod is provided at the upper end of the clamping plate, and the clamping plate is clamped on the outside of the steel shell;

[0012] The rotating drum assembly comprises a rotating drum, which is rotatably connected to a middle drum, and is threadedly connected to a threaded ring. An anti-skid prism is arranged on the outer side of the rotating drum, a long hole is arranged on the sliding rod, and a plug hole 1 is arranged on the middle drum.

[0013] Furthermore, it also includes a safety protection component 2, which includes a placement slot, a positive terminal is inserted into one side of the placement slot, and a negative terminal is inserted into the other side of the placement slot, the lower end of the positive terminal is connected to the positive wire 1, the lower end of the negative terminal is connected to the negative wire, one end of the positive wire is connected to the relay, the relay is fixed at the bottom of the placement slot, the relay is connected to one end of the positive wire 2, the other end of the positive wire 2 and the end of the negative terminal are both connected to the electrical equipment, and the relay is electrically connected to the temperature detection device through a transmission line.

[0014] Furthermore, the temperature detection device includes a temperature sensor, the relay is electrically connected to the temperature sensor through a transmission line, an inner slider is fixed to the outside of the temperature sensor, the inner slider slides inside the slider, a spring is arranged between the inner slider and the bottom of the slider, the slider slides in a bottom slide groove arranged at the bottom of the placement groove, and heat dissipation holes are arranged on both sides of the placement groove.

[0015] A lithium-ion battery comprises a polymer battery cell, an electrode packaging assembly, a plastic upper bracket and a plastic lower bracket which are mutually clamped on the outer side of the electrode packaging assembly, and a steel shell which is sleeved on the outer side of the polymer battery cell.

[0016] The advantages of the present invention are:

[0017] 1. The plastic upper bracket and the plastic lower bracket play a role in protecting the electrode packaging assembly to prevent external forces from impacting the electrode packaging assembly and causing damage to the electrode packaging assembly. The steel shell is made of steel and has strong hardness. It is sleeved on the outside of the polymer battery cell, the plastic upper bracket and the plastic lower bracket to prevent external forces from impacting the polymer battery cell and causing damage to the polymer battery cell.

[0018] 2. During the transfer, transportation and use of lithium-ion batteries, the lithium-ion batteries with steel shells can be placed in a safety protection component. The lower end of the steel shell is against the bottom of the middle cylinder component, and the plastic upper bracket at the upper end of the lithium-ion battery is against the top cover component. The rotating cylinder component is rotated to drive the clamping component to hold the outer side of the steel shell, further fixing the steel shell, further increasing the protection function of the lithium-ion battery, and the clamping component has a certain shock-absorbing function to prevent the lithium-ion battery from being damaged in the event of vibration or falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the explosion of the lithium-ion battery structure of the present invention Figure 1 ;

[0020] Figure 2 Schematic diagram of the explosion of the lithium-ion battery structure of the present invention Figure 2 ;

[0021] Figure 3 A schematic diagram of the structure of the safety protection component of the present invention Figure 1 ;

[0022] Figure 4 A schematic diagram of the structure of the safety protection component of the present invention Figure 2 ;

[0023] Figure 5 A schematic diagram of the structure of the safety protection component of the present invention Figure 3 ;

[0024] Figure 6 A schematic diagram of the structure of the safety protection component of the present invention Figure 4 ;

[0025] Figure 7 for Figure 3 A partial enlarged view of the middle part;

[0026] Figure 8 for Figure 5 A partial enlarged view of point B in the middle;

[0027] Fig. 9 It is a schematic diagram of the structure of the top cover assembly of the present invention;

[0028] Fig.10 The second structure of the safety protection component of the present invention is shown in FIG. Figure 1 ;

[0029] Fig.11 The second structure of the safety protection component of the present invention is shown in FIG. Figure 2 ;

[0030] Fig.12 The second structure of the safety protection component of the present invention is shown in FIG. Figure 3 ;

[0031] Fig.13 The second structure of the safety protection component of the present invention is shown in FIG. Figure 4 ;

[0032] Fig.14 for Fig.13 A partial enlarged view of point C in the middle.

[0033] Description of the markings in the figure:

[0034] Plastic upper bracket 1; PCB assembly 2; plastic lower bracket 3; polymer battery cell 4; positive nickel strip 5; negative nickel strip 6; TYPE-C female seat 7; positive hardware 8; steel shell 9; PET sleeve 10; top cover 11; slip ring 12; top port 13; socket 14; inner card block 15 ; triangular protrusion 16; middle cylinder 17; slot 18; limit block 19; spring 1 20; rotating cylinder 21; anti-slip prism 22; threaded ring 23; slide bar 24; long hole 25; upper rotating rod 26; lower rotating rod 27; spring 2 28; clamping plate 29; outer bending rod 30; metal plate 1 31; spring 3 32; connecting wire 33; metal plate 2 34; placement groove 35; positive terminal 36; positive wire 1 37; relay 38; positive wire 2 39; negative terminal 40; negative wire 41; heat dissipation hole 42; bottom slide groove 43; transmission line 44; slider 45; temperature sensor 46; inner slider 47; spring 4 48; jack 1 49. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below 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 creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] Embodiment 1

[0038] like Figure 1-14 As shown, a lithium-ion battery safety protection structure comprises a plastic upper bracket 1 and a plastic lower bracket 3, wherein the plastic upper bracket 1 and the plastic lower bracket 3 are screw-connected, and an electrode packaging assembly is positioned between the plastic upper bracket 1 and the plastic lower bracket 3, the plastic lower bracket 3 is fixed to the upper end of a polymer battery cell 4, the electrode packaging assembly is electrically connected to the polymer battery cell 4, and a steel shell 9 is provided outside the plastic upper bracket 1, the plastic lower bracket 3 and the polymer battery cell 4;

[0039] The working principle of the above technical solution is as follows: the electrode packaging assembly is placed between the plastic upper bracket 1 and the plastic lower bracket 3, the plastic upper bracket 1 and the plastic lower bracket 3 are screwed together, and then the electrode packaging assembly is fixed between the plastic upper bracket 1 and the plastic lower bracket 3, after the plastic upper bracket 1, the plastic lower bracket 3 and the electrode packaging assembly are fixed into a whole, the plastic lower bracket 3 is fixed to the upper end of the polymer battery cell 4, the electrode packaging assembly is electrically connected to the polymer battery cell 4, and the polymer battery cell 4, the plastic upper bracket 1, the plastic lower bracket 3 and the electrode packaging assembly are inserted into the steel shell 9, thereby completing the packaging of the lithium-ion battery;

[0040] The plastic upper bracket 1 and the plastic lower bracket 3 play a role in protecting the electrode packaging assembly to prevent external forces from impacting the electrode packaging assembly and causing damage to the electrode packaging assembly. The steel shell 9 is made of steel and has strong hardness. It is sleeved on the outside of the polymer battery cell 4, the plastic upper bracket 1 and the plastic lower bracket 3 to prevent external forces from impacting the polymer battery cell 4 and causing damage to the polymer battery cell 4.

[0041] Embodiment 2

[0042] like Figure 1-14As shown, the outer side of the steel shell 9 is covered with a PET film 10;

[0043] The steel shell 9 is provided with a socket, through which the electrode packaging assembly is connected to an external power line to charge the polymer battery cell 4;

[0044] The electrode packaging assembly is electrically connected to the polymer battery cell 4, and the electrode packaging assembly includes a PCB assembly 2, which is electrically connected to a TYPE-C female socket 7. A positive electrode hardware 8 is provided at the upper end of the TYPE-C female socket 7. The negative electrode of the polymer battery cell 4 is connected to the negative electrode of the PCB assembly 2 and the negative electrode of the steel shell 9 through a negative electrode nickel strip 6. The negative electrode of the steel shell 9 is at one end away from the PCB assembly 2. The positive electrode of the polymer battery cell 4 is connected to the positive electrode of the PCB assembly 2 through a positive electrode nickel strip 5. The positive electrode of the PCB assembly 2 is electrically connected to the TYPE-C female socket 7. The TYPE-C female socket 7 is connected to an external power line through a jack provided on the steel shell 9, and the polymer battery cell 4 is charged.

[0045] The working principle of the above technical solution is: a PET sleeve film 10 is provided on the outer side of the steel shell 9 to further enhance the strength of the lithium-ion battery;

[0046] A battery protection circuit is provided inside PCB component 2, which has overcharge protection, over-discharge protection, charge and discharge overcurrent protection and external short circuit protection. The lithium-ion battery is green and environmentally friendly, in line with the national environmental protection and safety concepts, and can be recycled 500 times with the capacity maintained at more than 80%.

[0047] Embodiment 3

[0048] like Figure 1-14 As shown, it also includes a safety protection component 1, which includes a middle cylinder component, the upper end of the middle cylinder component is clamped with a top cover component, the middle part of the middle cylinder component is slidably connected with a clamping component, the lower end of the middle cylinder component is rotatably connected with a rotating cylinder component, the clamping component is threadedly connected with the rotating cylinder component, the clamping component is clamped on the outside of the steel shell 9, the lower end of the steel shell 9 is against the bottom of the middle cylinder component, and the upper end of the plastic upper bracket 1 is against the inside of the top cover component;

[0049] The working principle of the above technical solution is as follows: during the transfer, transportation and use of the lithium-ion battery, the PET sleeve 10 set on the outer side of the steel shell 9 can be removed, and the lithium-ion battery with the steel shell 9 can be placed in a safety protection component 1. The lower end of the steel shell 9 is against the bottom of the middle cylinder component, and the plastic upper bracket 1 at the upper end of the lithium-ion battery is against the top cover component. The rotating cylinder component is rotated to drive the clamping component to hold the outer side of the steel shell 9, further fixing the steel shell 9, further increasing the protection function of the lithium-ion battery, and the clamping component has a certain shock-absorbing function to prevent the lithium-ion battery from being damaged in the event of vibration or falling.

[0050] Embodiment 4

[0051] like Figure 1-14 As shown, the middle cylinder assembly includes a middle cylinder 17, a slot 18 is provided at the upper end of the middle cylinder 17, the top cover assembly is clamped in the slot 18, the top cover assembly is clamped and connected with a limit block 19, the limit block 19 slides in the middle cylinder 17, a spring 20 is provided between the limit block 19 and the middle cylinder 17, the middle cylinder 17 is slidably connected with the clamping assembly, the middle cylinder 17 is rotatably connected with the rotating cylinder assembly, the inner bottom of the middle cylinder 17 is connected with the metal plate 1 31 through a spring 32, the outer bottom of the middle cylinder 17 is fixed with a metal plate 2 34, the metal plate 1 31 and the metal plate 2 34 are connected by a connecting line 33, and the lower end of the steel shell 9 is against the metal plate 1 31;

[0052] The working principle of the above technical solution is as follows: insert the lithium-ion battery into the middle cylinder 17, the lower end of the lithium-ion battery is against the metal plate 1 31, the top cover assembly is plugged into the upper end of the middle cylinder 17, the top cover assembly squeezes the lithium-ion battery to move downward in the middle cylinder 17, drives the metal plate 1 31 to move downward, drives the spring 3 32 to be compressed, rotates the top cover assembly, and the top cover assembly is snapped into the card slot 18, thereby limiting the lithium-ion battery in the middle cylinder 17, rotates the rotating cylinder assembly, drives the clamping assembly to slide on the middle cylinder 17, drives the clamping assembly to clamp the lithium-ion battery, the holding assembly has a certain shock-absorbing function, and the spring 3 32 has a certain elasticity, which can play a shock-absorbing role for the lithium-ion battery to the greatest extent;

[0053] The negative electrode of the lithium-ion battery contacts the metal plate 1 31 , and the metal plate 1 31 is connected to the metal plate 2 34 via a connecting line 33 . When the lithium-ion battery is inserted into the safety protection component 1 , the metal plate 2 34 becomes the negative electrode of the lithium-ion battery.

[0054] Embodiment 5

[0055] like Figure 1-14 As shown, the top cover assembly includes a top cover 11, a top opening 13 is provided at the upper end of the top cover 11, a socket 14 is provided at the side of the top cover 11, a slip ring 12 is rotatably connected to the top cover 11, an inner clamping block 15 is provided inside the top cover 11, after the top cover 11 is plugged into the upper end of the middle cylinder 17, the top cover 11 is rotated, the inner clamping block 15 is clamped into the clamping slot 18, the triangular protrusion 16 provided on the top cover 11 is clamped and connected with the limit block 19, and the upper end of the plastic upper bracket 1 is against the top cover 11;

[0056] The working principle of the above technical solution is as follows: after the lithium-ion battery is inserted into the middle cylinder 17, the top cover 11 is plugged into the upper end of the middle cylinder 17, and the top cover 11 is rotated to drive the inner clamping block 15 to be clamped into the clamping slot 18. At the same time, the triangular protrusion 16 squeezes the limit block 19 to move downward, driving the spring 120 to be compressed. When the inner clamping block 15 passes over the limit block 19, the limit block 19 is driven to move upward under the elastic force of the spring 120, and the limit block 19 is clamped on the outer side of the inner clamping block 15. At this time, the inner clamping block 15 is completely clamped into the clamping slot 18. Under the clamping action of the inner clamping block 15 and the limit block 19, the top cover 11 is prevented from automatically reversing and loosening on the middle cylinder 17, thereby ensuring the stability of the structure.

[0057] The positive electrode hardware 8 is exposed from the top opening 13, and the external charging line can pass through the socket 14 and be inserted into the charging hole on the TYPE-C female socket 7 to charge the polymer battery 4 through the TYPE-C female socket 7. When not charging, the slip ring 12 is rotated, and the slip ring 12 blocks the socket 14 to prevent external dust from entering the socket of the TYPE-C female socket 7;

[0058] The middle tube 17 is provided with a plurality of slots 18, and the inner block 15 on the top cover 11 can be inserted into the slots 18 at different positions on the middle tube 17, thereby changing the height between the bottom of the middle tube 17 and the top of the top cover 11, thereby adapting to lithium-ion batteries of different heights;

[0059] When the top cover 11 needs to be removed, the limit block 19 is pulled down to compress the spring 1 20, and the top cover 11 is reversed, so that the inner card block 15 is moved out of the card entry slot 18, and then the top cover 11 is pulled up to complete the separation between the middle tube 17 and the top cover 11, thereby facilitating the removal of the lithium-ion battery.

[0060] Embodiment 6

[0061] like Figure 1-14 As shown, the clamping assembly includes four slide bars 24, the four slide bars 24 are all slidably connected to the middle cylinder 17, the lower ends of the four slide bars 24 are fixedly connected by threaded rings 23, the threaded rings 23 are slidably connected to the middle cylinder 17, the threaded rings 23 are threadedly connected to the rotating cylinder assembly, the slide bars 24 are rotatably connected to the upper rotating rod 26, the upper rotating rod 26 is slidably connected to the lower rotating rod 27, a spring 28 is provided between the upper rotating rod 26 and the lower rotating rod 27, the lower rotating rod 27 is rotatably connected to the clamping plate 29, the bottom of the clamping plate 29 slides in the middle cylinder 17, the upper end of the clamping plate 29 is provided with an outer bending rod 30, and the clamping plate 29 is clamped on the outside of the steel shell 9;

[0062] The rotating drum assembly includes a rotating drum 21, the rotating drum 21 is rotatably connected to the middle drum 17, the rotating drum 21 is threadedly connected to the threaded ring 23, an anti-slip prism 22 is provided on the outer side of the rotating drum 21, a long hole 25 is provided on the sliding rod 24, and a plug hole 49 is provided on the middle drum 17;

[0063] The working principle of the above technical solution is as follows: insert the lithium-ion battery into the middle cylinder 17, and rotate the top cover 11 to clamp it on the upper end of the middle cylinder 17, then rotate the rotating cylinder 21. Since the rotating cylinder 21 is threadedly connected with the threaded ring 23, the threaded ring 23 is driven to slide downward on the outer wall of the middle cylinder 17, driving the upper rotating rod 26 and the lower rotating rod 27 to rotate as a whole, driving the four clamping plates 29 to move together, and the four clamping plates 29 contact and clamp the steel shell 9 on the outer side of the lithium-ion battery. Continue to rotate the rotating cylinder 21, driving the upper rotating rod 26 and the lower rotating rod 27 to slide against each other, driving the spring 28 to be compressed. Since the compressed spring 28 still has a certain elastic force, the four clamping plates 29 have a certain shock-absorbing function after clamping the lithium-ion battery, preventing the lithium-ion battery from being damaged in the case of vibration or falling.

[0064] The function of the outer curved rod 30 is to prevent the bottom of the lithium-ion battery from being stuck on the top of the clamping plate 29 when the lithium-ion battery is inserted into the middle of the four clamping plates 29, so as to facilitate the smooth insertion of the lithium-ion battery into the middle of the four clamping plates 29;

[0065] An anti-skid prism 22 is provided on the outer side of the rotating drum 21 to prevent the rotating drum 21 from slipping when rotating.

[0066] The long hole 25 provided on the slide bar 24 allows the lithium-ion battery to be connected to the outside world, which facilitates heat dissipation and prevents the lithium-ion battery from overheating and causing the risk of explosion.

[0067] Embodiment 7

[0068] like Figure 1-14 As shown, it also includes a safety protection component 2, which includes a placement slot 35, a positive terminal 36 is inserted into one side of the placement slot 35, and a negative terminal 40 is inserted into the other side of the placement slot 35. The lower end of the positive terminal 36 is connected to the positive wire 1 37, and the lower end of the negative terminal 40 is connected to the negative wire 41. The end of the positive wire 1 37 is connected to the relay 38, and the relay 38 is fixed to the bottom of the placement slot 35. The relay 38 is connected to one end of the positive wire 2 39, and the other end of the positive wire 2 39 and the end of the negative terminal 40 are both connected to the electrical equipment, and the relay 38 is electrically connected to the temperature detection device through the transmission line 44;

[0069] The temperature detection device includes a temperature sensor 46, a relay 38 is electrically connected to the temperature sensor 46 through a transmission line 44, an inner slider 47 is fixed to the outside of the temperature sensor 46, the inner slider 47 slides in the slider 45, a spring 48 is arranged between the inner slider 47 and the bottom of the slider 45, the slider 45 slides in the bottom slide groove 43 arranged at the bottom of the placement groove 35, and heat dissipation holes 42 are arranged on both sides of the placement groove 35;

[0070] The working principle of the above technical solution is as follows: insert the lithium-ion battery into the safety protection component 1, place the lithium-ion battery and the safety protection component 1 as a whole into the placement slot 35, the metal plate 2 34 abuts against the negative terminal 40, and the positive hardware 8 of the lithium-ion battery abuts against the positive terminal 36. When the lithium-ion battery is placed into the placement slot 35, the temperature sensor 46 passes through the insertion hole 1 49 and directly contacts the steel shell 9 of the lithium-ion battery. The lithium-ion battery squeezes the temperature sensor 46 downward, drives the inner slider 47 to move downward in the slider 45, drives the spring 48 to be compressed, and under the action of the elastic force of the spring 48, the temperature sensor 46 can be made to move downward. The temperature sensor 46 keeps in contact with the steel shell 9 of the lithium-ion battery. During the operation of the lithium-ion battery, the other end of the positive wire 39 and the end of the negative terminal 40 are both connected to the electrical equipment. The positive wire 1 37 and the positive wire 2 39 are connected through the relay 38. The temperature sensor 46 can detect the surface temperature of the lithium-ion battery. When the surface temperature of the lithium-ion battery reaches a preset value, the temperature sensor 46 controls the relay 38 to trip, so that the positive wire 1 37 and the positive wire 2 39 are disconnected, so that the lithium-ion battery cannot supply power, thereby preventing the lithium-ion battery from further overheating and exploding.

[0071] The positive terminal 36 and the negative terminal 40 are both curved on the sides in contact with the lithium-ion battery. After the lithium-ion battery is placed in the placement slot 35, the positive and negative electrodes of the lithium-ion battery are respectively stuck at the lower ends of the curved sides of the positive terminal 36 and the negative terminal 40 to prevent the lithium-ion battery from being easily loosened or jumping out.

[0072] The slider 45 slides in the bottom slide groove 43 provided at the bottom of the placement groove 35, which facilitates the movement of the slider 45 so that the temperature sensor 46 in the slider 45 is located directly below the socket 1 49;

[0073] Heat dissipation holes 42 are provided on both sides of the placement slot 35 to facilitate heat dissipation of the lithium-ion battery;

[0074] In addition, the lithium-ion battery can be directly placed in the placement slot 35, with the positive electrode hardware 8 of the lithium-ion battery against the positive terminal 36, and the negative electrode of the lithium-ion battery against the negative terminal 40, which can be arranged and selected according to actual needs.

[0075] Embodiment 8

[0076] like Figure 1-14 As shown, a lithium-ion battery comprises a polymer battery cell 4, an electrode packaging assembly, a plastic upper bracket 1 and a plastic lower bracket 3 that are mutually clamped on the outside of the electrode packaging assembly, and a steel shell 9 that is sleeved on the outside of the polymer battery cell 4;

[0077] The working principle of the above technical solution is as follows: inside the lithium-ion battery body, the electrode packaging assembly is protected by the plastic upper bracket and the plastic lower bracket, and the plastic upper bracket 1 and the plastic lower bracket 3 and the polymer battery cell 4 are safely protected by the steel shell 9;

[0078] Outside the lithium-ion battery, the lithium-ion battery is safely protected by a safety protection component one and a safety protection component two.

[0079] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A lithium-ion battery safety protection structure, characterized in that: The invention comprises a plastic upper bracket (1) and a plastic lower bracket (3), wherein the plastic upper bracket (1) and the plastic lower bracket (3) are screw-connected, and an electrode packaging assembly is positioned between the plastic upper bracket (1) and the plastic lower bracket (3), the plastic lower bracket (3) is fixed to the upper end of a polymer battery cell (4), the electrode packaging assembly is electrically connected to the polymer battery cell (4), and a steel shell (9) is provided on the outer sides of the plastic upper bracket (1), the plastic lower bracket (3) and the polymer battery cell (4); It also includes a safety protection component 1, which includes a middle cylinder component, the upper end of the middle cylinder component is clamped with a top cover component, the middle part of the middle cylinder component is slidably connected with a clamping component, the lower end of the middle cylinder component is rotatably connected with a rotating cylinder component, the clamping component is threadedly connected to the rotating cylinder component, the clamping component is clamped on the outside of the steel shell (9), the lower end of the steel shell (9) is against the bottom of the middle cylinder component, and the upper end of the plastic upper bracket (1) is against the inside of the top cover component; The middle cylinder assembly comprises a middle cylinder (17), a slot (18) is provided at the upper end of the middle cylinder (17), a top cover assembly is clamped in the slot (18), the top cover assembly is clamped and connected with a limit block (19), the limit block (19) slides in the middle cylinder (17), a spring 1 (20) is provided between the limit block (19) and the middle cylinder (17), the middle cylinder (17) is slidably connected with the clamping assembly, the middle cylinder (17) is rotatably connected with the rotating cylinder assembly, the inner bottom of the middle cylinder (17) is connected with the metal plate 1 (31) through a spring 3 (32), the outer bottom of the middle cylinder (17) is fixed with a metal plate 2 (34), the metal plate 1 (31) and the metal plate 2 (34) are connected through a connecting line (33), and the lower end of the steel shell (9) abuts against the metal plate 1 (31); The top cover assembly comprises a top cover (11), the top end of the top cover (11) is provided with a top opening (13), the side of the top cover (11) is provided with a socket (14), the top cover (11) is rotatably connected with a slip ring (12), an inner clamping block (15) is provided inside the top cover (11), after the top cover (11) is plugged into the upper end of the middle cylinder (17), the top cover (11) is rotated, the inner clamping block (15) is clamped into the clamping groove (18), the triangular protrusion (16) provided on the top cover (11) is clamped and connected with the limit block (19), and the upper end of the plastic upper bracket (1) is abutted against the inside of the top cover (11); The clamping assembly comprises four slide bars (24), the four slide bars (24) are all slidably connected to the middle cylinder (17), the lower ends of the four slide bars (24) are fixedly connected via a threaded ring (23), the threaded ring (23) is slidably connected to the middle cylinder (17), the threaded ring (23) is threadedly connected to the rotating cylinder assembly, the slide bars (24) are rotatably connected to the upper rotating rod (26), the upper rotating rod (26) is slidably connected to the lower rotating rod (27), a spring 2 (28) is provided between the upper rotating rod (26) and the lower rotating rod (27), the lower rotating rod (27) is rotatably connected to the clamping plate (29), the bottom of the clamping plate (29) slides in the middle cylinder (17), an outer bending rod (30) is provided at the upper end of the clamping plate (29), and the clamping plate (29) is clamped on the outside of the steel shell (9); The rotating drum assembly comprises a rotating drum (21), the rotating drum (21) is rotatably connected to the middle drum (17), the rotating drum (21) is threadedly connected to the threaded ring (23), an anti-slip prism (22) is provided on the outer side of the rotating drum (21), a long hole (25) is provided on the sliding rod (24), and a plug hole (49) is provided on the middle drum (17).

2. A lithium-ion battery safety protection structure according to claim 1, characterized in that: The outer side of the steel shell (9) is provided with a PET sleeve film (10).

3. A lithium-ion battery safety protection structure according to claim 1, characterized in that: The steel shell (9) is provided with a socket, and the electrode packaging assembly is connected to an external power line via the socket to charge the polymer battery cell (4).

4. A lithium-ion battery safety protection structure according to claim 1, characterized in that: The device also includes a second safety protection component, which includes a placement slot (35), a positive terminal (36) being inserted into one side of the placement slot (35), a negative terminal (40) being inserted into the other side of the placement slot (35), the lower end of the positive terminal (36) being connected to a positive electrode wire (37), the lower end of the negative terminal (40) being connected to a negative electrode wire (41), the end of the positive electrode wire (37) being connected to a relay (38), the relay (38) being fixed to the bottom of the placement slot (35), the relay (38) being connected to one end of a positive electrode wire (39), the other end of the positive electrode wire (39) and the end of the negative electrode terminal (40) being connected to electrical equipment, and the relay (38) being electrically connected to a temperature detection device via a transmission line (44).

5. A lithium-ion battery safety protection structure according to claim 4, characterized in that: The temperature detection device comprises a temperature sensor (46). The relay (38) is electrically connected to the temperature sensor (46) via a transmission line (44). An inner slider (47) is fixed to the outside of the temperature sensor (46). The inner slider (47) slides in the slider (45). A spring (48) is arranged between the inner slider (47) and the bottom of the slider (45). The slider (45) slides in a bottom slide groove (43) arranged at the bottom of the placement groove (35). Heat dissipation holes (42) are arranged on both sides of the placement groove (35).

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