A lithium battery high temperature protection structure and lithium battery

Abstract

The present invention relates to a lithium battery high-temperature protection structure and a lithium battery, belonging to the field of lithium battery technology. The structure comprises a housing, the inner side of which is provided with a cooling assembly capable of continuously and effectively cooling the lithium battery, the top and bottom of the housing being provided with buffer assemblies, the inner cavity of the housing being fixed with a plurality of partitions, the inner cavity of the housing being fixedly connected to a plurality of battery bodies, the plurality of partitions and the plurality of battery bodies being arranged alternately as a whole, safety assemblies being provided on the left and right sides of the inner cavity of the housing, each of the partitions being provided with a flow hole connected to the cooling assembly, the housing being provided with a drive cavity located at the rear side of the inner cavity, the drive cavity being provided with a flow control mechanism capable of controlling the flow of coolant, the flow control mechanism extending into the cooling assembly. The lithium battery high-temperature protection structure and the lithium battery, in conjunction with the cooling assembly and the flow control mechanism, efficiently dissipate heat from the lithium battery, thereby reducing the probability of explosion.

Description

Technical Field

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

[0002] With the continuous advancement of science and technology, lithium batteries have been widely used in portable electronic devices, electric vehicles, energy storage systems and other fields due to their advantages such as high energy density, long cycle life and no memory effect. Lithium batteries are relatively sensitive to temperature, so lithium battery high-temperature protection structures are needed to effectively protect lithium batteries.

[0003] For example, a Chinese patent (publication number: CN115084719A) discloses a lithium battery high-temperature protection structure and a lithium battery, including a heat-conducting module and several groups of lithium battery packs arranged in a rectangular shape on the heat-conducting module, and also including several cooling mechanisms and circulating water supply mechanisms. The cooling mechanism includes a cooling box body and two heat exchange components. Two partitions are provided in the cooling box body. The two partitions form a water passage cavity and two heat exchange cavities inside the cooling box body. The water passage cavity is located between the two heat exchange cavities. The two heat exchange components are respectively in the two heat exchange cavities. The two ends of the water passage cavity are respectively provided with a water inlet joint and a water outlet joint connected to the interior thereof. The cooling mechanism can accelerate the flow rate of the coolant to quickly dissipate the heat, thereby improving the heat dissipation efficiency and extending the service life of the lithium battery body. At the same time, the setting of the heat exchange component can accelerate the air flow around the lithium battery pack, perform heat exchange and cooling treatment on the heat generated by the lithium battery pack, and improve the safe use of the lithium battery.

[0004] However, the safety of this device is not high enough. When the battery fails, a large amount of heat will be generated in a short period of time. If the heat cannot be discharged quickly, it may explode. The device does not have an explosion-proof structure. When the lithium battery explodes, it may affect the safety of the user. Therefore, a lithium battery high-temperature protection structure and a lithium battery are proposed to solve the above problems. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a lithium battery high-temperature protection structure and a lithium battery, which have the advantages of high safety and solve the problem of insufficient safety of the high-temperature protection structure.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lithium battery high-temperature protection structure and a lithium battery, comprising a box body, a cooling assembly capable of continuously and effectively cooling the lithium battery is provided inside the box body, a buffer assembly for effectively buffering external impact is provided on the top and bottom of the box body, a plurality of partitions are fixed to the inner cavity of the box body, a plurality of battery bodies are fixedly connected to the inner cavity of the box body, the plurality of partitions and the plurality of battery bodies are arranged alternately as a whole, a safety assembly penetrating the side wall of the box body and effectively improving the overall safety is provided on the left and right sides of the inner cavity of the box body, each of the partitions is provided with a flow hole connected to the cooling assembly, a driving cavity is provided in the box body at the rear side of the inner cavity, a flow control mechanism capable of controlling the flow of coolant is provided in the driving cavity, and the flow control mechanism extends into the cooling assembly;

[0007] The top and the bottom of the box body are provided with a plurality of spring grooves, and the side walls of the box body are provided with a plurality of blocking rods, which extend into the plurality of heat dissipation channels respectively. The blocking rods and the plurality of top supporting portions are arranged alternately as a whole. The left and right side walls of the box body are provided with a plurality of energy absorption holes, and the top and the bottom of each energy absorption hole are connected with the heat dissipation channel, and an energy absorption portion is provided in each energy absorption hole.

[0008] Furthermore, the flow control mechanism includes a driving motor fixed to the rear wall of the driving chamber, the output shaft of the driving motor is fixed with a threaded rod, the right side of the threaded rod is rotatably connected to the right wall of the driving chamber through a bearing, the outer surface of the threaded rod is threadedly connected to a connecting rod, the top and bottom of the connecting rod are fixed with racks, two limit rods are fixed between the left and right inner walls of the driving chamber, respectively located on the upper and lower sides of the driving motor, the two limit rods respectively pass through the two racks, the inner rear wall of the driving chamber is rotatably connected to a plurality of transmission rods through bearings, and the outer surface of each transmission rod is fixed with a transmission gear Wheel, multiple transmission gears are respectively engaged with two racks, multiple transmission holes are opened in the box body, and the front and rear ends of each transmission hole are respectively connected with the cooling assembly and the driving cavity, and multiple transmission rods are respectively extended into the multiple transmission holes, and a control part is provided above each transmission rod and located in the transmission hole, and a generator is fixed to the bottom of each control part, and the input rod of the generator is fixed to the top of the transmission rod, and an adjusting rod extending into the cooling assembly is fixed to the top of each control part, and an adjusting blade is fixed to the outer surface of each adjusting rod and located in the cooling assembly.

[0009] Furthermore, the cooling assembly includes a liquid inlet channel opened in the top wall of the box and passing through the right side wall of the box, a liquid outlet channel opened in the bottom wall of the box and passing through the left side wall of the box, and a liquid inlet pipe and a liquid outlet pipe are fixed to the left and right walls of the box respectively, and the liquid inlet pipe and the liquid outlet pipe are respectively connected to the liquid inlet channel and the liquid outlet channel.

[0010] Furthermore, the liquid inlet channel and the liquid outlet channel are connected to a plurality of flow holes, and the partition is provided with a plurality of ventilation holes penetrating the partition.

[0011] Furthermore, two buffer grooves are provided on the top and bottom of the box body, and each of the buffer assemblies includes a plurality of buffer rods fixed to the buffer grooves, a buffer plate is fixed on the side of the plurality of buffer rods away from the buffer grooves, and the plurality of buffer rods are all bent.

[0012] Furthermore, each of the supporting parts includes a supporting rod fixed to the abutment plate, and multiple supporting rods extend into multiple spring grooves respectively. Each of the supporting rods is fixed with a compression spring at one end away from the abutment plate and located in the spring groove, and the side of the compression spring away from the supporting rod is fixed to the inner wall of the spring groove.

[0013] Furthermore, each of the energy absorbing parts includes a stabilizing platform fixed to the inner wall of the energy absorbing hole, an energy absorbing spring is fixed to the top and bottom of each of the stabilizing platforms, and a connecting plate is fixed to the opposite sides of the two energy absorbing springs.

[0014] Furthermore, each of the control parts includes a control rod, a sealed bearing is fixed on the outer surface of the control rod, and the control rod is rotatably connected to the transmission hole through the sealed bearing, a plurality of clamping blocks are fixed on the outer surface of the control rod and on the side close to the transmission rod, and the transmission rod is clamped with a connecting tube through the plurality of clamping blocks, a locking airbag is fixed on the outer side of the connecting tube, a stabilizing tube located on the outer side of the locking airbag is fixed on the inner side wall of the transmission hole, an extension tube extending to the outside of the transmission rod is fixed on the outer surface of the connecting tube and located below the locking airbag, a transmission airbag is fixed on the inner side of the extension tube, an air pump is fixed on the left side of the connecting tube, the top and bottom of the air pump are respectively fixed to the locking airbag and the transmission airbag, the outer surface of the transmission rod is meshed with the transmission tube, and the transmission tube extends to the inside of the transmission airbag.

[0015] A lithium battery comprises the above-mentioned lithium battery high-temperature protection structure.

[0016] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0017] 1. The lithium battery high-temperature protection structure and lithium battery will release a large amount of heat when the lithium battery fails. At this time, the heat will cause internal expansion, thereby squeezing the two fuse components. As the two fuse components move outward, the blocking rod will also move with them. At this time, the gap between the blocking rod and the heat dissipation channel will become larger, which can accommodate more heat to pass through and effectively guide the heat. In conjunction with the cooling component and the flow control mechanism, the lithium battery can be efficiently dissipated, thereby reducing the probability of explosion.

[0018] 2. When the lithium battery high-temperature protection structure and lithium battery generate too much heat and explosion is inevitable, the hot air will push the abutment plate to move further, prompting the blocking rod to move further, thereby blocking the heat dissipation channel. At this time, the impact force of the explosion will be absorbed by the top support part and the energy absorption part, and the collapse of the liquid inlet channel, liquid outlet channel and circulation hole will further absorb the impact force, which can absorb the explosion impact to the greatest extent and effectively protect the safety of the outside world.

[0019] 3. The lithium battery high temperature protection structure and lithium battery, the flow control mechanism can control the flow of the cooling component. When the flow control mechanism completely blocks the cooling component, the internal coolant cannot flow, which can achieve a good thermal insulation effect. The flow control mechanism can separately control the flow into multiple flow holes, which has a good cooling effect and realizes targeted cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 Schematic diagram of the structure of the flow control mechanism of the present invention;

[0023] Figure 4 Schematic diagram of the structure of the control unit of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 A three-dimensional appearance diagram of the connection relationship between the connecting rod and the rack of the present invention;

[0026] Figure 7 For the present invention Figure 1 Enlarged view of point C in the middle.

[0027] In the figure: 1 box, 2 cooling assembly, 201 liquid inlet channel, 202 liquid outlet channel, 203 liquid inlet pipe, 204 liquid outlet pipe, 3 buffer assembly, 301 buffer rod, 302 buffer plate, 4 partition, 5 insurance assembly, 501 abutment plate, 502 top support part, 5021 top support rod, 5022 compression spring, 503 blocking rod, 504 heat dissipation channel, 505 friction strip, 506 energy absorption part, 5061 stable platform, 5062 energy absorption spring, 5063 connecting rod Connecting plate, 6 circulation hole, 7 battery body, 8 flow control mechanism, 801 driving motor, 802 threaded rod, 803 connecting rod, 804 rack, 805 transmission rod, 806 transmission gear, 807 control unit, 8071 control rod, 8072 clamping block, 8073 connecting tube, 8074 locking airbag, 8075 air pump, 8076 stabilizing tube, 8077 extension tube, 8078 transmission airbag, 808 generator, 809 adjusting rod, 810 transmission hole. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figures 1 to 2In this embodiment, a lithium battery high-temperature protection structure and a lithium battery include a box body 1. A cooling assembly 2 is provided inside the box body 1, which can continuously and effectively cool the lithium battery. The top and bottom of the box body 1 are provided with a buffer assembly 3 that effectively buffers external impact. A plurality of partitions 4 are fixed to the inner cavity of the box body 1. The partitions 4 serve to separate the battery bodies 7. The partitions 4 themselves are made of a material with good thermal conductivity and have good thermal conductivity. The inner cavity of the box body 1 is fixedly connected to the plurality of battery bodies 7. The plurality of partitions 4 and the plurality of battery bodies 7 are arranged alternately as a whole. The left and right sides of the inner cavity of the box body 1 are provided with a safety assembly 5 that penetrates the side wall of the box body 1 and can effectively improve the overall safety. Each partition 4 is provided with a flow hole 6 connected to the cooling assembly 2. A driving cavity is provided in the box body 1 at the rear side of the inner cavity. The driving cavity is used to provide necessary space for a flow control mechanism 8. The driving cavity is provided with a flow control mechanism 8 that can control the flow of coolant. The flow control mechanism 8 extends into the cooling assembly 2.

[0030] It can be understood that the cooling component 2 includes a liquid inlet channel 201 opened in the top wall of the box body 1 and passing through the right side wall of the box body 1, and a liquid outlet channel 202 is opened in the bottom wall of the box body 1 and passes through the left side wall of the box body 1. The liquid inlet channel 201 and the liquid outlet channel 202 are used to ensure the smooth passage of the cooling liquid. The left and right walls of the box body 1 are respectively fixed with a liquid inlet pipe 203 and a liquid outlet pipe 204, which are respectively connected to the liquid inlet channel 201 and the liquid outlet channel 202. The end of the liquid inlet pipe 203 away from the box body 1 is fixedly connected to the condenser, and the other end of the condenser is fixedly connected to the liquid tank. The end of the liquid outlet pipe 204 away from the box body 1 is fixedly connected to the liquid tank.

[0031] In addition, the liquid inlet channel 201 and the liquid outlet channel 202 are connected to multiple circulation holes 6, and the circulation holes 6 can allow the coolant to circulate to improve the heat dissipation effect. The partition 4 is provided with multiple ventilation holes that pass through the partition 4. The ventilation holes are located behind the circulation holes 6, and there is no connection between the two. Therefore, the liquid in the circulation holes 6 will not flow out through the outlet holes. The ventilation holes are used to allow air to circulate, thereby achieving the effect of balancing the temperature between multiple battery bodies 7.

[0032] In addition, two buffer grooves are provided on the top and bottom of the box body 1. Each buffer assembly 3 includes a plurality of buffer rods 301 fixed to the buffer groove. A buffer plate 302 is fixed to the side of the plurality of buffer rods 301 away from the buffer groove. The plurality of buffer rods 301 are all bent. When the bent buffer rods 301 encounter external impact force, the impact force is transmitted to the plurality of buffer rods 301 through the buffer plate 302, causing the plurality of buffer rods 301 to collapse and deform, thereby effectively absorbing the impact force.

[0033] It should be further explained that each insurance component 5 includes an abutment plate 501, and the inner top wall and the inner bottom wall of the box body 1 are provided with two friction grooves. Friction strips 505 are fixed on the top and bottom of the abutment plate 501. There is a relatively large friction between the friction strips 505 and the friction grooves, which can provide a certain resistance to prevent the multiple compression springs 5022 from shaking back and forth, ensuring that the abutment plate 501 effectively abuts the battery body 7. Each friction strip 505 extends into the friction groove and is movably connected to the friction groove. Multiple spring grooves are provided on the left and right side walls of the inner cavity of the box body 1. The side of the abutment plate 501 close to the side wall of the box body 1 is provided with multiple supporting parts 502 that extend into the multiple spring grooves respectively. The spring grooves can provide the necessary supporting force for the supporting parts 502, and the box body 1 is provided with a plurality of heat dissipation channels 504 that penetrate the side walls of the box body 1. The heat dissipation channels 504 are connected to the outside world and can achieve heat dissipation effect. A plurality of blocking rods 503 that extend into the plurality of heat dissipation channels 504 are fixed on the side of the abutment plate 501 close to the side wall of the box body 1. The setting of the blocking rods 503 can effectively improve the overall safety. When the impact force is too strong, the heat dissipation channels 504 are blocked in time. The plurality of blocking rods 503 and the plurality of top supporting portions 502 are arranged alternately as a whole. A plurality of energy absorption holes are provided on the left and right side walls of the box body 1. The top and top of each energy absorption hole are connected to the heat dissipation channel 504. An energy absorption part 506 is provided in each energy absorption hole. After the blocking is completed, the energy absorption part 506 can effectively absorb the internal impact force.

[0034] Furthermore, each supporting portion 502 includes a supporting rod 5021 fixed to the abutment plate 501, and multiple supporting rods 5021 extend into multiple spring grooves respectively. A compression spring 5022 is fixed at one end of each supporting rod 5021 away from the abutment plate 501 and located in the spring groove. The elastic force of the compression spring 5022 can ensure that the supporting rod 5021 continuously provides pressure to the abutment plate 501, prompting the abutment plate 501 to continuously abut against the battery body 7, thereby improving the heat dissipation effect. The side of the compression spring 5022 away from the supporting rod 5021 is fixed to the inner wall of the spring groove.

[0035] It can be known that each energy absorbing part 506 includes a stabilizing platform 5061 fixed to the inner wall of the energy absorbing hole, and each stabilizing platform 5061 is fixed with an energy absorbing spring 5062 on the top and bottom, and the two energy absorbing springs 5062 are fixed with a connecting plate 5063 on the opposite sides. When the impact force occurs, the impact force causes the connecting plate 5063 to move, thereby compressing the energy absorbing spring 5062 and converting the impact force into elastic potential energy of the energy absorbing spring 5062.

[0036] In this embodiment, after the impact ends, the energy-absorbing spring 5062 releases elastic potential energy, causing the connecting plate 5063 to swing back and forth. The protective structure has good temperature control effect and high overall safety, and is safe and stable to use.

[0037] Please refer again Figure 1 and Figures 3 to 7 In order to achieve flow control, the flow control mechanism 8 in this embodiment includes a drive motor 801 fixed to the rear wall of the drive chamber. The drive motor 801 is used to provide power for the flow control mechanism 8 as a whole. The output shaft of the drive motor 801 is fixed with a threaded rod 802. The right side of the threaded rod 802 is rotatably connected to the right wall of the drive chamber through a bearing. The outer surface of the threaded rod 802 is threadedly connected to a connecting rod 803. The rack 804 is limited by the limit rod, thereby effectively limiting the connecting rod 803. The threaded connection of the threaded rod 802 provides The power causes the connecting rod 803 to move, driving the rack 804 to move. The top and bottom of the connecting rod 803 are fixed with racks 804. Two limit rods are fixed between the left and right inner walls of the driving chamber, which are respectively located on the upper and lower sides of the driving motor 801. The two limit rods pass through the two racks 804 respectively. The inner rear wall of the driving chamber is connected to multiple transmission rods 805 through bearings. The outer surface of each transmission rod 805 is fixed with a transmission gear 806. The multiple transmission gears 806 are respectively engaged with the two racks 804, and the racks 804 move. It can drive multiple transmission gears 806 to rotate at the same time. Multiple transmission holes 810 are opened in the box body 1. The front and rear ends of each transmission hole 810 are respectively connected to the cooling component 2 and the driving cavity. Multiple transmission rods 805 extend into the multiple transmission holes 810 respectively. A control part 807 is provided above each transmission rod 805 and located in the transmission hole 810. The control part 807 can control the power transmission on the transmission rod 805, thereby controlling the rotation of the adjustment rod 809. When the control part 807 is in the connected state, the power of the transmission rod 805 can be smoothly transmitted. The power is transmitted to the regulating rod 809, thereby realizing flow control. When the control part 807 is disconnected, the regulating rod 809 can be locked to ensure the flow stability. A generator 808 is fixed to the bottom of each control part 807. The input rod of the generator 808 is fixed to the top of the transmission rod 805. An regulating rod 809 extending into the cooling component 2 is fixed to the top of each control part 807. An regulating blade is fixed on the outer surface of each regulating rod 809 and is located in the cooling component 2. The flow rate of the coolant can be controlled by rotating the regulating blade.

[0038] In addition, each control unit 807 includes a control rod 8071, and a sealed bearing is fixed on the outer surface of the control rod 8071. The sealed bearing has good sealing performance and can ensure that the coolant will not flow into the transmission hole 810 along the control rod 8071, thereby ensuring the stability of the overall operation of the control unit 807. The control rod 8071 is rotatably connected to the transmission hole 810 through the sealed bearing. A plurality of clamping blocks 8072 are fixed on the outer surface of the control rod 8071 and on the side close to the transmission rod 805. The transmission rod 805 is clamped with a connecting tube 8073 through a plurality of clamping blocks 8072. A locking airbag 8074 is fixed on the outer side of the connecting tube 8073. When the locking airbag 8074 is inflated, the locking airbag 8074 is tightly against the stabilizing tube 8076. Since the stabilizing tube 8076 is a fixed structure, the connecting tube 8073 can be smoothly connected. 073 is locked, thereby improving the stability of the adjustment rod 809, the inner wall of the transmission hole 810 is fixed with a stabilizing cylinder 8076 located on the outside of the locking airbag 8074, the outer surface of the connecting cylinder 8073 and below the locking airbag 8074 is fixed with an extension cylinder 8077 extending to the outside of the transmission rod 805, the inner side of the extension cylinder 8077 is fixed with a transmission airbag 8078, and the left side of the connecting cylinder 8073 is fixed with an air pump 8075, the top and bottom of the air pump 8075 are respectively fixed to the locking airbag 8074 and the transmission airbag 8078, the outer surface of the transmission rod 805 is engaged with a transmission cylinder, and the transmission cylinder extends to the inside of the transmission airbag 8078, and when the transmission airbag 8078 is inflated, the transmission airbag 8078 will simultaneously tightly abut the connecting cylinder 8073 and the transmission cylinder, thereby ensuring that power can be transmitted smoothly.

[0039] In addition, a lithium battery includes the above-mentioned lithium battery high-temperature protection structure.

[0040] In this embodiment, a micro battery is fixed on the rear side of the air pump 8075 for storing the electrical energy generated by the generator 808, thereby stably supplying energy to the air pump 8075. The adjustment rod 809 on the flow control mechanism 8 can operate simultaneously or separately, which can effectively improve the cooling effect.

[0041] It can be understood that the device can effectively control the flow rate through the cooperation of the cooling component 2 and the flow control mechanism 8, and then fully improve the safety of the use of the device through the insurance component 5 and the buffer component 3, reduce the probability of explosion, and effectively absorb the impact force when an explosion occurs, thereby protecting the safety of external users.

[0042] The electrical components mentioned herein are all electrically connected to a controller and a power supply. The control method of the present invention is implemented by the controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The power supply provided by the battery is also common knowledge in the art. The present invention is primarily used to protect mechanical devices, so the control method and circuit connection will not be explained in detail in the present invention.

[0043] The working principle of the above embodiment is:

[0044] (1) During normal use, first start the air pump 8075 to pump gas into the transmission airbag 8078. At this time, the transmission airbag 8078 can simultaneously connect the transmission rod 805 and the control rod 8071. Start the drive motor 801 to drive the threaded rod 802 to rotate. Since the two limit rods will limit the rack 804 and cooperate with the threaded connection relationship, the rack 804 will move at this time, thereby driving multiple transmission gears 806 to rotate at the same time. The power is transmitted from the transmission rod 805 through the transmission airbag 8078 to the control rod 8071, driving the adjustment blades on the adjustment rod 809 to rotate, thereby achieving flow control. At this time, multiple adjustment blades can rotate at the same time, thereby adjusting the overall flow at the same time, and better controlling the temperature of the battery body 7.

[0045] (2) When the temperature of the battery body 7 rises locally, the drive motor 801 is first started to drive all the regulating blades to rotate simultaneously, causing the flow rate to decrease. Then, the air pump 8075 located at other relatively low temperature positions is started to transfer the gas originally located in the transmission airbag 8078 to the locking airbag 8074, causing the locking airbag 8074 to expand. At this time, the inside and outside of the locking airbag 8074 are tightly abutted against the connecting tube 8073 and the stabilizing tube 8076. At this time, the regulating rod 809 will be locked, and the transmission rod 805 and the regulating rod 809 are disconnected, and power cannot be transmitted. The transmission rod 805 and the regulating rod 809 located at the position of the battery body 7 with a higher temperature remain connected. At this time, starting the drive motor 801 again can realize the rotation of the regulating blade at that location, thereby expanding the flow rate at that location and achieving targeted cooling.

[0046] (3) When a battery fails, a large amount of heat will be released. At this time, the heat will cause internal expansion, thereby squeezing the two fuse components 5, causing the abutment plates 501 on the two fuse components 5 to move outward. At this time, the blocking rod 503 will also move with it. At this time, the gap between the blocking rod 503 and the heat dissipation channel 504 will become larger, which can accommodate more heat to pass through and effectively guide the heat. In conjunction with the liquid inlet channel 201, the liquid outlet channel 202 and the multiple flow holes 6, the heat can be quickly evacuated, thereby reducing the probability of explosion.

[0047] (4) When the explosion is inevitable due to excessive heat generation, the impact force generated by the explosion will first prompt the abutment plate 501 to move. At this time, the compression spring 5022 is compressed, absorbing the impact force for the first time. At the same time, the hot air will push the abutment plate 501 to move further, prompting the blocking rod 503 to move further, thereby blocking the heat dissipation channel 504. The remaining impact force will be guided to the energy absorbing part 506, and the impact force will be absorbed again through the compression deformation of the energy absorbing spring 5062. Finally, the impact force will be further absorbed by the collapse of the liquid inlet channel 201, the liquid outlet channel 202 and the flow hole 6, which can absorb the explosion impact to the greatest extent, effectively protect the external safety, and effectively improve the overall safety.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0049] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A lithium battery high temperature protection structure, comprising a box (1), characterized in that: The inner side of the box (1) is provided with a cooling assembly (2) capable of continuously and effectively cooling the lithium battery, the top and bottom of the box (1) are provided with a buffer assembly (3) capable of effectively buffering external impact, the inner cavity of the box (1) is fixed with a plurality of partitions (4), the inner cavity of the box (1) is fixedly connected with a plurality of battery bodies (7), the plurality of partitions (4) and the plurality of battery bodies (7) are arranged alternately as a whole, the left and right sides of the inner cavity of the box (1) are provided with a safety assembly (5) penetrating the side wall of the box (1) and capable of effectively improving the overall safety, each of the partitions (4) is provided with a flow hole (6) connected to the cooling assembly (2), the box (1) is provided with a driving cavity located at the rear side of the inner cavity, the driving cavity is provided with a flow control mechanism (8) capable of controlling the flow of the coolant, and the flow control mechanism (8) extends into the cooling assembly (2); Each of the safety components (5) includes an abutment plate (501), the inner top wall and the inner bottom wall of the box body (1) are provided with two friction grooves, the top and bottom of the abutment plate (501) are fixed with friction strips (505), each of the friction strips (505) extends into the friction groove and is movably connected to the friction groove, a plurality of spring grooves are provided on the left and right side walls of the inner cavity of the box body (1), a plurality of top support portions (502) are provided on the side of the abutment plate (501) close to the side wall of the box body (1), and the box body (1) is provided with a plurality of top support portions (502) respectively extending into the plurality of spring grooves. ) are provided with a plurality of heat dissipation channels (504) penetrating the side wall of the box body (1), a plurality of blocking rods (503) respectively extending into the plurality of heat dissipation channels (504) are fixed on one side of the abutting plate (501) close to the side wall of the box body (1), the plurality of blocking rods (503) and the plurality of top supporting portions (502) are arranged alternately as a whole, a plurality of energy absorption holes are provided on the left and right side walls of the box body (1), the top and the bottom of each energy absorption hole are connected to the heat dissipation channel (504), and an energy absorption portion (506) is provided in each energy absorption hole; The flow control mechanism (8) includes a driving motor (801) fixed to the rear wall of the driving chamber, a threaded rod (802) is fixed to the output shaft of the driving motor (801), the right side of the threaded rod (802) is rotatably connected to the right wall of the driving chamber via a bearing, the outer surface of the threaded rod (802) is threadedly connected to a connecting rod (803), the top and bottom of the connecting rod (803) are fixed with racks (804), two limiting rods are fixed between the left and right inner walls of the driving chamber, and are located on the upper and lower sides of the driving motor (801), respectively, the two limiting rods respectively pass through the two racks (804), the inner rear wall of the driving chamber is rotatably connected to a plurality of transmission rods (805) via bearings, the outer surface of each transmission rod (805) is fixed with a transmission gear (806), and the plurality of transmission gears (806) are fixed to the outer surface of the plurality of transmission rods (806). ) are respectively engaged with two racks (804), a plurality of transmission holes (810) are opened in the box body (1), and the front and rear ends of each transmission hole (810) are respectively connected to the cooling component (2) and the driving cavity, and a plurality of transmission rods (805) extend into the plurality of transmission holes (810), and a control part (807) is provided above each transmission rod (805) and located in the transmission hole (810), and a generator (808) is fixed to the bottom of each control part (807), and the input rod of the generator (808) is fixed to the top of the transmission rod (805), and an adjustment rod (809) extending into the cooling component (2) is fixed to the top of each control part (807), and an adjustment blade is fixed to the outer surface of each adjustment rod (809) and located in the cooling component (2).

2. The lithium battery high temperature protection structure according to claim 1, characterized in that: The cooling assembly (2) includes a liquid inlet channel (201) opened in the top wall of the box body (1) and penetrating the right side wall of the box body (1); a liquid outlet channel (202) penetrating the left side wall of the box body (1) is opened in the bottom wall of the box body (1); a liquid inlet pipe (203) and a liquid outlet pipe (204) are fixed to the left side wall and the right side wall of the box body (1), respectively; the liquid inlet pipe (203) and the liquid outlet pipe (204) are respectively connected to the liquid inlet channel (201) and the liquid outlet channel (202).

3. The lithium battery high temperature protection structure according to claim 2, characterized in that: The liquid inlet channel (201) and the liquid outlet channel (202) are connected to a plurality of flow holes (6), and the partition plate (4) is provided with a plurality of ventilation holes penetrating the partition plate (4).

4. The lithium battery high temperature protection structure according to claim 1, characterized in that: Two buffer grooves are provided on the top and bottom of the box body (1); each of the buffer components (3) comprises a plurality of buffer rods (301) fixed to the buffer grooves; a buffer plate (302) is fixed to one side of the plurality of buffer rods (301) away from the buffer grooves; and the plurality of buffer rods (301) are all bent.

5. The lithium battery high temperature protection structure according to claim 1, characterized in that: Each of the supporting parts (502) includes a supporting rod (5021) fixed to the abutting plate (501), and the plurality of supporting rods (5021) extend into a plurality of spring slots respectively. A compression spring (5022) is fixed at one end of each supporting rod (5021) away from the abutting plate (501) and located in the spring slot, and the side of the compression spring (5022) away from the supporting rod (5021) is fixed to the inner side wall of the spring slot.

6. The lithium battery high temperature protection structure according to claim 1, characterized in that: Each of the energy absorbing parts (506) comprises a stabilizing platform (5061) fixed to the inner wall of the energy absorbing hole, an energy absorbing spring (5062) is fixed to the top and bottom of each of the stabilizing platforms (5061), and a connecting plate (5063) is fixed to the opposite sides of the two energy absorbing springs (5062).

7. The lithium battery high temperature protection structure according to claim 1, characterized in that: Each of the control parts (807) includes a control rod (8071), a sealed bearing is fixed on the outer surface of the control rod (8071), and the control rod (8071) is rotatably connected to the transmission hole (810) through the sealed bearing. A plurality of clamping blocks (8072) are fixed on the outer surface of the control rod (8071) and on a side close to the transmission rod (805). The transmission rod (805) is clamped with a connecting tube (8073) through the plurality of clamping blocks (8072). A locking airbag (8074) is fixed on the outer side of the connecting tube (8073). The inner side wall of the transmission hole (810) is fixed with a locking airbag (8074). 074), an extension tube (8077) extending to the outside of the transmission rod (805) is fixed on the outer surface of the connecting tube (8073) and located below the locking airbag (8074), a transmission airbag (8078) is fixed on the inner side of the extension tube (8077), an air pump (8075) is fixed on the left side of the connecting tube (8073), the top and bottom of the air pump (8075) are respectively fixed to the locking airbag (8074) and the transmission airbag (8078), the outer surface of the transmission rod (805) is engaged with a transmission tube, and the transmission tube extends to the inner side of the transmission airbag (8078).

8. A lithium battery, characterized in that: The invention comprises a lithium battery high temperature protection structure as described in any one of claims 1 to 7.

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