High-safety lithium-converted dry battery and preparation method thereof

Abstract

According to the high-safety lithium-to-dry battery and the preparation method thereof, when a telescopic conducting rod generates heat due to current transmission, the heat is quickly transmitted to a heat conducting shell through a heat conducting column, a large amount of heat is absorbed through the phase change heat absorption effect of a heat conducting ring, local temperature rise of an electrode is delayed, and meanwhile the heat is efficiently dissipated to the external environment; when the temperature continues to rise to a set threshold value, the first deformation strip deforms depending on the thermal response characteristic of the memory alloy, the heat conduction sleeve and the telescopic conducting rod are driven to move downwards, the contact area with external equipment is gradually reduced, a circuit is finally switched off, and the situation that the conductivity is reduced or thermal runaway accidents are caused due to electrode overheating is avoided; the first deformation strip and the second deformation strip are cooled and reset, and the circuit is closed after the telescopic conducting rod returns to the initial position, so that the functions of intelligent heat dissipation, overheat protection and automatic reset of the electrode part are realized through the overall design, and the safety and reliability of the battery under the high-power working condition are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and more particularly, to a high-safety lithium transfer dry battery and a preparation method thereof. Background Art

[0002] As a new type of energy storage device, lithium transfer dry batteries are gradually widely used due to their excellent performance. Compared with traditional batteries, lithium transfer dry batteries have the characteristics of high energy density and long cycle life. However, in actual applications, due to complex working conditions, when the battery outputs high power or operates for a long time, a large amount of heat is easily generated in the electrode part due to the concentrated transfer of current. Overheating of the electrode not only affects the conductivity of the entire battery, but may also lead to battery performance degradation and even safety accidents.

[0003] When existing lithium transfer dry batteries operate at high power or work for a long time, due to the large current load borne by the electrodes (such as conductive components like telescopic conductive rods), the local temperature will rise rapidly. If this heat cannot be dissipated in a timely and effective manner, it will lead to overheating of the electrode, thereby triggering potential safety hazards of the battery. However, the current heat dissipation design usually focuses on the battery body and is achieved through passive heat dissipation structures (such as heat sinks or single-layer heat conductive materials). This design has the following deficiencies in the heat dissipation of the electrode part:

[0004] The passive heat dissipation structure relies on the natural diffusion and conduction of heat, and its heat dissipation speed is relatively slow, making it difficult to meet the rapid heat dissipation requirements of the electrode during high-power operation. Once the heat accumulates at the electrode beyond the heat dissipation capacity, the local temperature will continue to rise, which may lead to blocked current transmission, reduced conductivity, and even the risk of thermal runaway.

[0005] Current lithium transfer dry batteries usually only rely on simple overheat cut-off devices (such as thermal fuses). The triggering points of these devices are usually relatively high, and after triggering, the circuit is disconnected and the battery cannot resume operation. In addition, the existing design lacks an accurate temperature response mechanism for the electrode part and cannot cut off the circuit in time when the electrode temperature is too high, thereby avoiding further overheating of the electrode. This design defect increases the possibility of local high-temperature runaway of the electrode, thereby threatening the safety of the entire battery.

[0006] Therefore, in view of the above technical problems, it is necessary to provide a high-safety lithium transfer dry battery and a preparation method thereof. Summary of the Invention

[0007] The purpose of the present invention is to provide a high-safety lithium transfer dry battery and a preparation method thereof to solve the above problems.

[0008] To achieve the above purpose, the technical solutions provided by an embodiment of the present invention are as follows:

[0009] A high - security lithium - converted dry battery, comprising: a lithium - converted dry battery body, a transfer component, and an adaptive component. The lithium - converted dry battery body includes a battery housing, a battery body, a step - down circuit, and battery positive and negative electrodes. The battery body is disposed inside the battery housing. The battery positive and negative electrodes are electrically connected to the battery body and led out to the step - down circuit. The step - down circuit is used to adjust the voltage output by the battery body to the safe operating voltage range required by external devices. The transfer component is disposed on the upper side of the lithium - converted dry battery body. The transfer component includes a heat - conducting shell, which is connected to the battery housing. A plurality of evenly distributed elastic heat - conducting rods and a plurality of heat - conducting columns are fixedly connected to the inner wall of the heat - conducting shell. The adaptive component is disposed inside the heat - conducting shell. The adaptive component includes a heat - conducting box, which is fixedly connected to the plurality of heat - conducting columns. A conductive block is inlaid at the middle of the bottom end of the heat - conducting box, and the conductive block abuts against the battery positive electrode.

[0010] As a further improvement of the present invention, a sealing cover is fixedly connected to the top end of the heat - conducting box. The outer end of the heat - conducting box is fixedly connected to one end of the plurality of heat - conducting columns. A telescopic conductive rod is slidably connected to the sealing cover.

[0011] As a further improvement of the present invention, a heat - conducting sleeve is installed outside the telescopic conductive rod. The outer periphery of the heat - conducting sleeve is fixedly connected to one end of the plurality of elastic heat - conducting rods. The material of the heat - conducting sleeve is set as an insulating and heat - conducting material.

[0012] As a further improvement of the present invention, a plurality of evenly distributed fixing blocks are fixedly connected to the outer periphery of the heat - conducting sleeve. A first deformation strip is fixedly connected to the bottom end of the fixing block, and the bottom end of the first deformation strip is fixedly connected to the top end of the sealing cover.

[0013] As a further improvement of the present invention, an elastic heat - conducting sleeve is installed inside the heat - conducting box and at the outer periphery of the telescopic conductive rod. A heat - conducting ring is disposed in the space formed between the elastic heat - conducting sleeve and the inner wall of the heat - conducting box.

[0014] As a further improvement of the present invention, the material of the heat - conducting ring is set as a phase - change endothermic material.

[0015] As a further improvement of the present invention, a plurality of evenly distributed second deformation strips are fixedly connected to the outer periphery of the elastic heat - conducting sleeve. One end of the second deformation strip is fixedly connected to the inner wall of the heat - conducting box.

[0016] As a further improvement of the present invention, the materials of both the second deformation strip and the first deformation strip are set as shape - memory alloy materials.

[0017] As a further improvement of the present invention, a conductive liquid is disposed inside the elastic heat - conducting sleeve. The conductive liquid is in contact with the telescopic conductive rod, and the material of the conductive liquid is set as a liquid metal material.

[0018] A preparation method of a high - security lithium - to - dry battery, comprising the following steps:

[0019] S1: Install the battery body inside the battery housing. The battery body includes the positive and negative electrodes of the battery and a step - down circuit. The positive and negative electrodes of the battery are electrically connected to the battery body and led out to the step - down circuit to ensure that the output voltage of the battery body is adjusted to the safe operating voltage range required by external devices through the step - down circuit, thus completing the assembly of the lithium - to - dry battery body;

[0020] S2: Prepare and process a heat - conducting shell, uniformly fix a plurality of elastic heat - conducting rods and heat - conducting columns on the inner wall of the heat - conducting shell, and connect the heat - conducting shell to the battery housing to form a transfer component;

[0021] S3: Fix and install a heat - conducting box at one end of the heat - conducting column. A conductive block is inlaid at the bottom end of the heat - conducting box, and ensure that the conductive block is in reliable contact with the positive electrode of the battery body, thus completing the connection between the heat - conducting box and the battery body;

[0022] S4: Install an elastic heat - conducting sleeve inside the heat - conducting box. A closed space is formed between the elastic heat - conducting sleeve and the inner wall of the heat - conducting box, and a plurality of second deformation strips are uniformly fixed around the outside of the elastic heat - conducting sleeve. One end of the second deformation strip is fixedly connected to the inner wall of the heat - conducting box;

[0023] S5: Install a heat - conducting ring inside the closed space formed between the elastic heat - conducting sleeve and the inner wall of the heat - conducting box. The material of the heat - conducting ring is a phase - change endothermic material; fill the inside of the elastic heat - conducting sleeve with a conductive liquid. The conductive liquid is set to be a liquid metal material, and ensure that the conductive liquid is in reliable contact with the telescopic conductive rod;

[0024] S6: Finally, fix and install a sealing cover on the top of the heat - conducting box, and slidably connect a telescopic conductive rod to the sealing cover. A heat - conducting sleeve is installed around the outside of the telescopic conductive rod. The material of the heat - conducting sleeve is set to be an insulating and heat - conducting material, and is fixedly connected to the heat - conducting sleeve through a plurality of elastic heat - conducting rods;

[0025] S7: Install a plurality of uniformly distributed fixing blocks around the outside of the heat - conducting sleeve. The bottom end of the fixing block is fixedly connected to a first deformation strip, and the bottom end of the first deformation strip is fixedly connected to the top end of the sealing cover;

[0026] S8: Conduct functional debugging on the assembled lithium - to - dry battery to verify the voltage regulation function of the battery body and the heat transfer performance of the heat - conducting component; test the temperature response characteristics of the first deformation strip and the second deformation strip; conduct a sealing detection on the sealing cover and elastic heat - conducting sleeve components to ensure that the conductive liquid does not leak, and finally complete the preparation of the lithium - to - dry battery.

[0027] Compared with the prior art, the advantages of the present invention are as follows:

[0028] (1) Through the heat transfer structure of the heat conduction box, heat conduction columns, and heat conduction shell, combined with the characteristics of the phase change heat absorption material in the heat conduction ring, efficient heat management of the electrode part is achieved. When heat is generated in the telescopic conductive rod due to current transmission, the heat is quickly transferred to the heat conduction shell through the heat conduction columns, and a large amount of heat is absorbed by the phase change heat absorption of the heat conduction ring, converting from solid to liquid, significantly delaying the further rise of the local temperature of the electrode, thus effectively avoiding the decline in conductivity or safety hazards caused by overheating of the electrode and ensuring the safe operation of the battery system.

[0029] (2) When the temperature of the electrode part continues to rise to the set threshold, the first deformation strip deforms relying on the thermal response characteristics of the shape memory alloy, generating thermal contraction, driving the heat conduction sleeve and the telescopic conductive rod to gradually move downward, reducing the contact area between the telescopic conductive rod and the external device, and finally completely disconnecting the circuit. Through this design, the current transmission can be automatically interrupted when the electrode is overheated, preventing electrode damage or thermal runaway accidents caused by continuous high temperature.

[0030] (3) When the temperature of the electrode part drops to the safe range, the first deformation strip and the second deformation strip cool and reset, and the elastic heat conduction sleeve shrinks and recovers, causing the telescopic conductive rod to gradually return to the initial position, re - contacting the external device, closing the circuit, and the battery resumes normal operation. Through this reset function, the electrode can automatically restore its conductivity without manual intervention after the temperature drops, ensuring the stability and reliability of the battery system. Brief Description of the Drawings

[0031] Figure 1 is a three - dimensional structure schematic diagram of the present invention;

[0032] Figure 2 is a structure schematic diagram of the transfer component of the present invention;

[0033] Figure 3 is a structure schematic diagram of the heat conduction shell of the present invention;

[0034] Figure 4 is a structure schematic diagram of the heat conduction box of the present invention;

[0035] Figure 5 is a structure schematic diagram of the adaptive component of the present invention.

[0036] Explanation of the reference numerals in the figures:

[0037] 1. Lithium - transfer dry battery body; 2. Transfer component; 3. Adaptive component; 21. Heat conduction shell; 22. Elastic heat conduction rod; 23. Heat conduction column; 31. Heat conduction box; 32. Sealing cover; 33. Telescopic conductive rod; 34. Heat conduction sleeve; 35. Fixed block; 36. First deformation strip; 37. Elastic heat conduction sleeve; 38. Second deformation strip. Detailed Embodiment

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment:

[0040] Please refer to Figures 1-5 , a high-security lithium transfer dry battery, comprising: a lithium transfer dry battery body 1, a transfer component 2 and an adaptive component 3. The lithium transfer dry battery body 1 includes a battery housing, a battery body, a step-down circuit and battery positive and negative electrodes. The battery body is arranged inside the battery housing, and the battery positive and negative electrodes are electrically connected to the battery body and led out to the step-down circuit. The step-down circuit is used to adjust the voltage output by the battery body to the safe operating voltage range required by external devices. The transfer component 2 is arranged on the upper side of the lithium transfer dry battery body 1. The transfer component 2 includes a heat-conducting shell 21, and the heat-conducting shell 21 is connected to the battery housing. A plurality of evenly distributed elastic heat-conducting rods 22 and a plurality of heat-conducting columns 23 are fixedly connected to the inner wall of the heat-conducting shell 21. The adaptive component 3 is arranged in the heat-conducting shell 21. The adaptive component 3 includes a heat-conducting box 31, and the heat-conducting box 31 is fixedly connected to the plurality of heat-conducting columns 23. A conductive block is embedded in the middle of the bottom end of the heat-conducting box 31, and the conductive block abuts against the battery positive electrode.

[0041] Among them, through the integrated design of the heat-conducting box 31, the sealing cover 32, the telescopic conductive rod 33, the heat-conducting sleeve 34, the elastic heat-conducting sleeve 37 and the deformation strips 36 and 38, the heat dissipation performance, overheat protection ability and reset function of the electrode part are significantly improved, ensuring the safety and stability of the battery. First, through the efficient heat conduction structure of the heat-conducting box 31, the heat-conducting column 23 and the heat-conducting shell 21, combined with the characteristics of the phase-change heat-absorbing material in the heat-conducting ring, when the telescopic conductive rod 33 generates heat due to current transmission, the heat can be quickly transferred to the heat-conducting shell 21 through the heat-conducting column 23, and a large amount of heat is absorbed by the phase change of the heat-conducting ring from solid to liquid, significantly delaying the further rise of the local temperature of the electrode and efficiently dissipating the heat to the external environment, thereby realizing intelligent heat dissipation management. Secondly, when the temperature of the telescopic conductive rod 33 further rises to the set threshold, the first deformation strip 36 deforms relying on the thermal response characteristics of the shape memory alloy, driving the heat-conducting sleeve 34 and the telescopic conductive rod 33 to move downward, gradually reducing the contact area between the telescopic conductive rod 33 and the external device, and finally completely disconnecting the circuit to avoid accidents such as a decrease in conductivity or thermal runaway caused by overheating of the electrode. In addition, when the temperature drops to the safe range, the first deformation strip 36 and the second deformation strip 38 cool and reset, and through the contraction of the elastic heat-conducting sleeve 37, the normal distribution of the conductive liquid is restored, the telescopic conductive rod 33 gradually returns to the initial position, contacts the external device again, the circuit is closed, and the battery resumes normal working state. The overall design realizes the intelligent temperature management and overheat protection functions of the electrode part through the synergistic effects of heat dissipation, disconnection and automatic reset, ensuring the safety and reliability of the battery under high-power working conditions.

[0042] A sealing cover 32 is fixedly connected to the top end of the heat-conducting box 31. One end of the heat-conducting box 31 is fixedly connected to one end of a plurality of heat-conducting columns 23. A telescopic conductive rod 33 is slidably connected to the sealing cover 32.

[0043] A heat-conducting sleeve 34 is installed outside the telescopic conductive rod 33. One end of a plurality of elastic heat-conducting rods 22 is fixedly connected to the outside of the heat-conducting sleeve 34. The material of the heat-conducting sleeve 34 is set as an insulating and heat-conducting material.

[0044] A plurality of uniformly distributed fixing blocks 35 are fixedly connected to the outside of the heat-conducting sleeve 34. A first deformation strip 36 is fixedly connected to the bottom end of the fixing block 35. The bottom end of the first deformation strip 36 is fixedly connected to the top end of the sealing cover 32.

[0045] The materials of the second deformation strip 38 and the first deformation strip 36 are both set as shape memory alloy materials.

[0046] Among them, the top end of the heat-conducting box 31 is fixedly connected with a sealing cover 32, forming a sealed space structure, which can effectively isolate the interference of the external environment on the internal components, and at the same time prevent the leakage of the internal conductive liquid or heat, improving the operating stability of the system. One end of the outer end of the heat-conducting box 31 is fixedly connected with a plurality of heat-conducting columns 23, and the heat-conducting columns 23 transfer the heat generated inside the heat-conducting box 31 to the heat-conducting shell 21 outward, so as to achieve efficient heat dissipation and avoid overheating of the battery.

[0047] At the same time, a telescopic conductive rod 33 is slidably connected to the heat-conducting box 31. This design allows the telescopic conductive rod 33 to move up and down during operation to meet the requirements of different working states. When the telescopic conductive rod 33 forms an electrical connection with the device, the circuit is closed to support the normal operation of the lithium-to-dry battery 1; when the temperature is too high, the telescopic conductive rod 33 can be disconnected from the device through adaptive adjustment to protect the battery safety.

[0048] A heat-conducting sleeve 34 is installed outside the telescopic conductive rod 33. The material of the heat-conducting sleeve 34 is set as an insulating and heat-conducting material, which can not only effectively conduct heat but also insulate the current, preventing the risk of circuit short-circuit or electric leakage. At the same time, one end of the outer periphery of the heat-conducting sleeve 34 is fixedly connected with a plurality of elastic heat-conducting rods 22, and the elastic heat-conducting rods 22 also ensure the stability and reliability of the structure while providing a supporting role.

[0049] In addition, a plurality of uniformly distributed fixing blocks 35 are fixedly connected to the outer periphery of the heat-conducting sleeve 34. The bottom end of the fixing block 35 is fixedly connected with a first deformation strip 36. The material of the first deformation strip 36 is set as a shape memory alloy, which has good thermal response characteristics. When the temperature rises, the first deformation strip 36 will undergo thermal shortening, thereby driving the fixing block 35 and the heat-conducting sleeve 34 to move downward, realizing the dynamic adjustment of the positions of the heat-conducting sleeve 34 and the telescopic conductive rod 33. The bottom end of the first deformation strip 36 is fixedly connected with the top end of the sealing cover 32. Through this connection, the movement of the deformation strip can be reliably transmitted to the entire structure, further realizing the structural adjustment under temperature response.

[0050] Through the integrated design of the heat-conducting box 31, the sealing cover 32, the telescopic conductive rod 33, the heat-conducting sleeve 34, the elastic heat-conducting rods 22, the fixing blocks 35 and the first deformation strip 36, the heat management and overheat protection of the battery during operation can be effectively realized. When the battery temperature rises, the heat-conducting box 31 transfers the heat to the heat-conducting shell 21 through the heat-conducting columns 23, reducing the internal temperature of the battery.

[0051] When the battery temperature is too high, the first deformation strip 36 undergoes thermal deformation when the temperature reaches the set threshold, driving the heat conduction sleeve 34 and the telescopic conductive rod 33 to move downward, gradually reducing their contact area with the device until the circuit is disconnected, protecting the safety of the device and the battery. After the temperature drops, the first deformation strip 36 resets, the heat conduction sleeve 34 and the telescopic conductive rod 33 return to their original positions, the circuit is reconnected, and the battery resumes operation. The entire system design has an intelligent temperature response ability, can automatically disconnect the circuit and reduce risks when overheated, and automatically reset after the temperature recovers, ensuring the safety and reliability of the battery.

[0052] An elastic heat conduction sleeve 37 is installed inside the heat conduction box 31 and surrounds the outside of the telescopic conductive rod 33. A heat conduction ring is arranged in the space formed between the elastic heat conduction sleeve 37 and the inner wall of the heat conduction box 31.

[0053] The material of the heat conduction ring is set as a phase change heat absorption material.

[0054] A plurality of uniformly distributed second deformation strips 38 are fixedly connected to the outside of the elastic heat conduction sleeve 37. One end of the second deformation strip 38 is fixedly connected to the inner wall of the heat conduction box 31.

[0055] A conductive liquid is arranged inside the elastic heat conduction sleeve 37. The conductive liquid is in contact with the telescopic conductive rod 33, and the material of the conductive liquid is set as a liquid metal material.

[0056] Among them, inside the heat conduction box 31, an elastic heat conduction sleeve 37 is installed outside the telescopic conductive rod 33. The elastic heat conduction sleeve 37 has good elasticity and heat conduction performance. Its design can realize dynamic adjustment of volume with temperature change, so as to adjust the distribution of the internal conductive liquid and the contact area of the telescopic conductive rod 33, realizing temperature response and open circuit protection functions. A heat conduction ring is arranged in the space between the elastic heat conduction sleeve 37 and the inner wall of the heat conduction box 31. The material of the heat conduction ring is a phase change heat absorption material.

[0057] The heat conduction ring effectively regulates the temperature through the phase change heat absorption principle. When the temperature of the telescopic conductive rod 33 rises, the heat is transferred to the heat conduction ring through the conductive liquid and the elastic heat conduction sleeve 37. The heat conduction ring can absorb a large amount of heat and undergo a phase change from solid to liquid. In this process, the heat conduction ring can significantly delay the further rise of the internal temperature, thus protecting the safe operation of the battery. The phase change heat absorption material will return to its original state from liquid to solid when the temperature drops, thus realizing the cycle function of continuous heat absorption and heat release, and greatly improving the heat dissipation efficiency and thermal management ability of the battery.

[0058] The outer enclosure of the elastic heat-conducting sleeve 37 is fixedly connected with a plurality of evenly distributed second deformation strips 38. One end of the second deformation strip 38 is fixedly connected to the inner wall of the heat-conducting box 31. The material of the second deformation strip 38 is memory alloy, and it can automatically shorten or reset according to temperature changes. When the temperature in the heat-conducting box 31 increases, the second deformation strip 38 shortens due to heat, driving the elastic heat-conducting sleeve 37 to expand outward, increasing the volume of the internal space, and at the same time cooperating with the first deformation strip 36 to undergo thermal deformation when the temperature reaches the set threshold, driving the heat-conducting sleeve 34 and the telescopic conductive rod 33 to move downward.

[0059] This expansion can effectively alleviate the space compression problem caused by the downward movement of the telescopic conductive rod 33, avoid excessive pressure in the thermally conductive sleeve 37 and squeeze out the conductive liquid, and at the same time support the stable downward movement of the elastic thermally conductive sleeve 37 to achieve safe disconnection of the circuit. When the temperature drops, the first deformation bar 36 and the second deformation bar 38 cool and reset, driving the elastic thermally conductive sleeve 37 to restore its original shape, the internal space is reduced, the conductive liquid is in full contact with the telescopic conductive rod 33 again, and the telescopic conductive rod 33 moves up and resets, and the circuit returns to normal working state.

[0060] The elastic heat-conductive sleeve 37 is filled with conductive liquid, which is in contact with the telescopic conductive rod 33. The conductive liquid is made of liquid metal such as gallium-based alloy, which has excellent electrical conductivity and thermal conductivity and can quickly transfer current and heat. During the operation of the circuit, the conductive liquid forms a conductive loop through direct contact with the telescopic conductive rod 33, and at the same time efficiently transfers the heat generated during the operation to the heat-conductive ring and the heat-conductive box 31 for further heat dissipation.

[0061] Through the combined design of the elastic heat-conducting sleeve 37, the heat-conducting ring and the second deformation strip 38, the whole system realizes the intelligent heat management and overheat protection function. The heat-conducting ring utilizes the characteristics of the phase-change heat-absorbing material to absorb a large amount of heat when the temperature rises, delaying the further rise of the temperature, and transferring the heat to the outside through the heat-conducting box 31 and the heat-conducting column 23 to ensure the stability of the internal temperature of the battery. Driven by the second deformation strip 38, the elastic heat-conducting sleeve 37 dynamically adjusts the internal space according to the temperature change. When the temperature is too high, the elastic heat-conducting sleeve 37 expands to relieve the internal pressure, cooperates with the first deformation strip 36, and finally realizes the automatic disconnection protection of the circuit; when the temperature drops, the first deformation strip 36 and the second deformation strip 38 are reset, the elastic heat-conducting sleeve 37 returns to its original state, and the conductive liquid contacts the telescopic conductive rod 33 again, realizing the automatic reconnection of the circuit.

[0062] It should be noted that in order to ensure the sequential activation of the second deformation strip 38 and the first deformation strip 36, the activation temperature of the second deformation strip 38 is set to 80°C and the activation temperature of the first deformation strip 36 is set to 85°C by optimizing the phase change temperature and thermal response environment design of the memory alloy material.

[0063] The phase change temperature of the phase change heat absorption material is designed to be approximately 60°C. When the temperature reaches 60°C, the phase change material first absorbs a large amount of heat and undergoes a phase change from solid to liquid, effectively delaying the further increase of the internal temperature. When the temperature continues to rise to 80°C, the second deformation strip 38 begins to undergo thermal contraction, driving the elastic heat conduction sleeve 37 to expand outward, relieving the internal pressure and stabilizing the distribution of the conductive liquid; when the temperature further rises to 85°C, the first deformation strip 36 deforms, driving the heat conduction sleeve 34 and the telescopic conductive rod 33 to move downward to achieve circuit disconnection protection.

[0064] To ensure the stable operation of the entire device, the insulation and sealing of key components are optimized in the design. The heat conduction sleeve 34 is made of insulating heat-conducting material, which can effectively conduct heat while isolating the risk of circuit short-circuit; the inner walls of the heat conduction box 31 and the sealing cover 32 are coated with insulating coatings to further prevent the accidental contact between the conductive liquid and external components. In addition, the sliding connection between the telescopic conductive rod 33 and the sealing cover 32 uses a high-precision sliding sealing ring and a sealing gasket resistant to liquid metal corrosion to ensure smooth sliding while avoiding the leakage of the conductive liquid. To prevent the liquid metal of the conductive liquid from overflowing due to temperature changes or pressure fluctuations, the elastic heat conduction sleeve 37 in the heat conduction box 31 is designed to expand in response to temperature through the second deformation strip 38, dynamically adjusting the internal space, relieving the pressure increase caused by the downward movement of the telescopic conductive rod 33, and ensuring that the conductive liquid always remains in a closed space, thereby ensuring the safety and operation stability of the device.

[0065] A preparation method of a high-safety lithium transfer dry battery includes the following steps:

[0066] S1: Install the battery body in the battery housing. The battery body includes the positive and negative electrodes of the battery and a step-down circuit. The positive and negative electrodes of the battery are electrically connected to the battery body and led out to the step-down circuit to ensure that the output voltage of the battery body is adjusted to the safe operating voltage range required by external devices through the step-down circuit, and the assembly of the lithium transfer dry battery body 1 is completed;

[0067] S2: Prepare and process the heat conduction shell 21, uniformly fix a plurality of elastic heat conduction rods 22 and heat conduction columns 23 on the inner wall of the heat conduction shell 21, and connect the heat conduction shell 21 with the battery housing to form a transfer component 2;

[0068] S3: Fix and install the heat conduction box 31 at one end of the heat conduction column 23, inlay a conductive block at the bottom end of the heat conduction box 31, and ensure reliable contact between the conductive block and the positive electrode of the battery body to complete the connection between the heat conduction box 31 and the battery body;

[0069] S4: Install an elastic heat conduction sleeve 37 in the heat conduction box 31. A closed space is formed between the elastic heat conduction sleeve 37 and the inner wall of the heat conduction box 31, and a plurality of second deformation strips 38 are uniformly fixed around the elastic heat conduction sleeve 37, and one end of the second deformation strip 38 is fixedly connected to the inner wall of the heat conduction box 31;

[0070] S5: Install a heat-conducting ring made of a phase-change endothermic material in the enclosed space formed between the elastic heat-conducting sleeve 37 and the inner wall of the heat-conducting box 31; fill the inside of the elastic heat-conducting sleeve 37 with a conductive liquid, which is set to be made of liquid metal, and ensure reliable contact between the conductive liquid and the telescopic conductive rod 33;

[0071] S6: Finally, fixedly install a sealing cover 32 on the top of the heat-conducting box 31, slidably connect the telescopic conductive rod 33 to the sealing cover 32, surround and install a heat-conducting sleeve 34 outside the telescopic conductive rod 33. The material of the heat-conducting sleeve 34 is set to be an insulating and heat-conducting material, and it is fixedly connected to the heat-conducting sleeve 34 through a plurality of elastic heat-conducting rods 22;

[0072] S7: Surround and install a plurality of uniformly distributed fixing blocks 35 outside the heat-conducting sleeve 34. The bottom end of the fixing block 35 is fixedly connected to a first deformation strip 36, and the bottom end of the first deformation strip 36 is fixedly connected to the top end of the sealing cover 32;

[0073] S8: Conduct functional debugging on the assembled lithium-converted dry battery to verify the voltage regulation function of the battery body and the heat transfer performance of the heat-conducting component; test the temperature response characteristics of the first deformation strip 36 and the second deformation strip 38; conduct a sealing detection on the sealing cover 32 and the elastic heat-conducting sleeve 37 components to ensure that the conductive liquid will not leak, and finally complete the preparation of the lithium-converted dry battery.

[0074] Working principle:

[0075] Through the efficient heat conduction and phase change heat absorption design of the heat conduction box 31, heat conduction column 23, heat conduction shell 21 and heat conduction ring, combined with the dynamic response structure of the telescopic conductive rod 33, heat conduction sleeve 34, elastic heat conduction sleeve 37 and deformation strip, the intelligent heat dissipation, overheat protection and automatic reset functions of the lithium transfer dry battery are realized. When the battery is working, the heat generated inside is transferred to the heat conduction column 23 and heat conduction shell 21 through the heat conduction box 31, and the heat conduction shell 21 dissipates the heat to the external environment. At the same time, the heat conduction ring inside the heat conduction box 31 uses the phase change heat absorption material to absorb heat and undergoes a phase change from solid to liquid, effectively delaying the rise of the battery temperature. When the battery temperature further rises to the set threshold, the first deformation strip 36 is heated and deformed, driving the heat conduction sleeve 34 and telescopic conductive rod 33 to move downward, gradually reducing the contact area between the telescopic conductive rod 33 and the external device until the circuit is completely disconnected, preventing the safety risks caused by battery overheating. In addition, the elastic heat conduction sleeve 37 expands outward under the thermal shortening action of the second deformation strip 38, alleviating the problem of increased internal pressure caused by the downward movement of the telescopic conductive rod 33, ensuring that the conductive liquid is always in a closed state and avoiding leakage. When the temperature drops, the first deformation strip 36 and the second deformation strip 38 cool and reset, the elastic heat conduction sleeve 37 returns to its original shape, the telescopic conductive rod 33 returns to its initial position, contacts the external device again, the circuit is closed, and the battery resumes normal working state. The overall design ensures the safety and stability of the battery under high power or complex working conditions through the coordinated action of heat dissipation, disconnection and automatic reset, realizing the intelligent temperature management and thermal protection functions.

[0076] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0077] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners understandable to those skilled in the art.

Claims

1. A high-safety lithium-to-dry battery, characterized in that: include: A lithium-to-dry battery body (1), the lithium-to-dry battery body (1) comprising a battery housing, a battery body, a step-down circuit and a positive and negative electrode of the battery, the battery body being arranged inside the battery housing, the positive and negative electrodes of the battery being electrically connected to the battery body and being led to the step-down circuit; the step-down circuit is used to adjust the voltage output by the battery body to a safe operating voltage range required by an external device; A transmission component (2), the transmission component (2) being arranged on the upper side of the lithium-to-dry battery body (1), the transmission component (2) comprising a heat-conducting shell (21), the heat-conducting shell (21) being connected to the battery shell, and the inner wall of the heat-conducting shell (21) being fixedly connected with a plurality of uniformly distributed elastic heat-conducting rods (22) and a plurality of heat-conducting columns (23); An adaptive component (3), the adaptive component (3) being arranged in a heat-conducting shell (21), the adaptive component (3) comprising a heat-conducting box (31), the heat-conducting box (31) being fixedly connected to a plurality of heat-conducting columns (23), and a conductive block being embedded in the middle of the bottom end of the heat-conducting box (31), the conductive block being in contact with the positive electrode of the battery.

2. A high-safety lithium-to-dry battery according to claim 1, characterized in that: The top end of the heat-conducting box (31) is fixedly connected to a sealing cover (32), the outer end of the heat-conducting box (31) is fixedly connected to one end of a plurality of heat-conducting columns (23), and the sealing cover (32) is slidably connected to a telescopic conductive rod (33).

3. A high-safety lithium-to-dry battery according to claim 2, characterized in that: A heat-conducting sleeve (34) is installed on the outer periphery of the telescopic conductive rod (33); the outer periphery of the heat-conducting sleeve (34) is fixedly connected to one end of a plurality of elastic heat-conducting rods (22); and the material of the heat-conducting sleeve (34) is set to be an insulating heat-conducting material.

4. A high-safety lithium-to-dry battery according to claim 3, characterized in that: The heat-conducting sleeve (34) is surrounded and fixedly connected with a plurality of evenly distributed fixing blocks (35), the bottom end of the fixing block (35) is fixedly connected with a first deformation strip (36), and the bottom end of the first deformation strip (36) is fixedly connected to the top end of the sealing cover (32).

5. A high-safety lithium-to-dry battery according to claim 2, characterized in that: An elastic heat-conducting sleeve (37) is installed in the heat-conducting box (31) and at the outer surrounding of the telescopic conductive rod (33), and a heat-conducting ring is arranged in the space formed by the elastic heat-conducting sleeve (37) and the inner wall of the heat-conducting box (31).

6. A high-safety lithium-to-dry battery according to claim 5, characterized in that: The material of the heat-conducting ring is set to be a phase-change heat-absorbing material.

7. A high-safety lithium-to-dry battery according to claim 5, characterized in that: The elastic heat-conducting sleeve (37) is surrounded and fixedly connected with a plurality of evenly distributed second deformation strips (38), and one end of the second deformation strip (38) is fixedly connected to the inner wall of the heat-conducting box (31).

8. A high-safety lithium-to-dry battery according to claim 4, characterized in that: The material of the second deformation strip (38) and the first deformation strip (36) are both set to be memory alloy material.

9. A high-safety lithium-to-dry battery according to claim 5, characterized in that: A conductive liquid is arranged in the elastic heat-conducting sleeve (37), the conductive liquid is in contact with the telescopic conductive rod (33), and the material of the conductive liquid is set to be a liquid metal material.

10. A method for preparing a high-safety lithium-to-dry battery according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Install the battery body in the battery housing. The battery body includes positive and negative electrodes and a step-down circuit. The positive and negative electrodes are electrically connected to the battery body and are led to the step-down circuit to ensure that the output voltage of the battery body is adjusted to the safe working voltage range required by the external device through the step-down circuit, thereby completing the assembly of the lithium-to-dry battery body (1); S2: preparing and processing a heat-conducting shell (21), evenly fixing a plurality of elastic heat-conducting rods (22) and heat-conducting columns (23) on the inner wall of the heat-conducting shell (21), and connecting the heat-conducting shell (21) to the battery shell to form a transmission assembly (2); S3: The heat-conducting box (31) is fixedly mounted on one end of the heat-conducting column (23), a conductive block is embedded in the bottom end of the heat-conducting box (31), and the conductive block is ensured to be in reliable contact with the positive electrode of the battery body, thereby completing the connection between the heat-conducting box (31) and the battery body; S4: installing an elastic heat-conducting sleeve (37) in the heat-conducting box (31), forming a closed space between the elastic heat-conducting sleeve (37) and the inner wall of the heat-conducting box (31), and uniformly fixing a plurality of second deformation strips (38) around the elastic heat-conducting sleeve (37), wherein one end of the second deformation strip (38) is fixedly connected to the inner wall of the heat-conducting box (31); S5: Install a heat-conducting ring in the closed space formed by the elastic heat-conducting sleeve (37) and the inner wall of the heat-conducting box (31), wherein the material of the heat-conducting ring is a phase-change heat-absorbing material; fill the elastic heat-conducting sleeve (37) with a conductive liquid, wherein the conductive liquid is set to be a liquid metal material, and ensure that the conductive liquid is in reliable contact with the telescopic conductive rod (33); S6: Finally, a sealing cover (32) is fixedly installed on the top of the heat-conducting box (31), and a telescopic conductive rod (33) is slidably connected to the sealing cover (32), and a heat-conducting sleeve (34) is installed around the telescopic conductive rod (33). The material of the heat-conducting sleeve (34) is set to be an insulating heat-conducting material, and is fixedly connected to the heat-conducting sleeve (34) through a plurality of elastic heat-conducting rods (22); S7: installing a plurality of evenly distributed fixing blocks (35) on the outer periphery of the heat-conducting sleeve (34), wherein the bottom ends of the fixing blocks (35) are fixedly connected to the first deformation strip (36), and the bottom ends of the first deformation strip (36) are fixedly connected to the top end of the sealing cover (32); S8: Perform functional debugging on the assembled lithium-to-dry battery to verify the voltage regulation function of the battery body and the heat transfer performance of the heat-conducting component; test the temperature response characteristics of the first deformation bar (36) and the second deformation bar (38); perform sealing inspection on the sealing cover (32) and the elastic heat-conducting sleeve (37) to ensure that the conductive liquid will not leak, and finally complete the preparation of the lithium-to-dry battery.

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