A diaphragm-free all-solid-state battery and a manufacturing process

Abstract

The application discloses a diaphragm-free full-solid-state battery and a manufacturing process, which comprise a box body, a top cover and a full-solid-state battery group; a plurality of battery grooves are formed in the bottom end of the box body and are arranged in a Greek letter shape; the full-solid-state battery group is respectively installed on the inner side of the plurality of battery grooves through a plurality of buckle structures; the top cover is installed on the box body through bolts; an extrusion limiting structure is installed on the top cover; and a temperature control structure is installed on the box body; the application relates to the technical field of solid-state batteries; and the beneficial effects of the application are that a scissor-type support and a silica gel-graphene elastic layer are used to construct a meander-shaped frame, the battery is allowed to freely deform within a 10%-30% volume expansion range, and stress concentration problems caused by traditional rigid fixation are avoided; and a double-redundancy detection system integrating a displacement sensor and a strain gauge can capture radial deformation and stress changes of the battery in real time.

Description

Technical Field

[0001] This invention relates to the field of solid-state battery technology, and in particular to a membrane-free all-solid-state battery and its manufacturing process. Background Technology

[0002] In the field of new energy battery technology, all-solid-state batteries are considered the core development direction for next-generation electric vehicle power batteries due to their advantages such as high energy density, long cycle life, and low risk of thermal runaway. However, their commercialization is limited by key technical bottlenecks in existing module designs: traditional rigid fixing methods cannot adapt to the 10% to 30% volume expansion during battery charge and discharge cycles, easily leading to stress concentration at the electrode-electrolyte interface, resulting in delamination, cracks, or even short circuits; passive thermal management systems rely on natural heat dissipation or liquid cooling solutions, which have a thermal conduction delay of >10 seconds, making it difficult to quickly suppress chain thermal runaway reactions caused by local hot spots; indirect detection methods such as single-point temperature or voltage monitoring have a high false alarm rate and cannot detect early anomalies such as increased internal resistance caused by expansion; safety control mechanisms can only cut off the circuit after thermal runaway through fuses, lacking active prevention capabilities linked to state detection. The above defects together result in all-solid-state battery systems still having high safety risks, seriously restricting their large-scale application. In view of this, in-depth research on the above problems led to this case. Summary of the Invention

[0003] The technical solution of the present invention to achieve the above objectives is as follows: A membrane-free all-solid-state battery, comprising: a housing, a top cover, and an all-solid-state battery pack; the bottom end of the housing is provided with multiple battery slots arranged in a U-shape; the all-solid-state battery pack is respectively installed inside the multiple battery slots through multiple snap-fit ​​structures; the top cover is installed on the housing by bolts; a compression limiting structure is installed on the top cover; and a temperature control structure is installed on the housing.

[0004] The snap-fit ​​structure includes: a pair of long limiting plates, a pair of short limiting plates, a silicone-graphene composite elastic layer, two pairs of telescopic components, and multiple detection and compression components;

[0005] A pair of long limiting plates and a pair of short limiting plates are installed in a rectangular shape on the inside of the battery compartment via two pairs of telescopic components. Multiple detection and extrusion components are evenly installed on the pair of long limiting plates and the pair of short limiting plates. A silicone-graphene composite elastic layer is installed on the top of the inside of the battery compartment. A U-shaped support limiting block is provided on the pair of long limiting plates and the pair of short limiting plates.

[0006] The extrusion detection assembly includes: a detection rod, a detection telescopic rod, a detection ring, a detection buffer spring, a displacement sensor, and strain gauges;

[0007] Multiple detection rods are respectively inserted into the long limit plate and the short limit plate. The detection rods have convex cylindrical grooves. The detection ring is fitted onto the detection telescopic rod. The detection ring and the detection telescopic rod are movably inserted into the inner side of the convex cylindrical groove. The displacement sensor is installed inside the detection ring and the convex cylindrical groove. The strain gauge is installed inside the convex cylindrical groove. The detection buffer spring is fitted onto the detection telescopic rod.

[0008] Preferably, the telescopic assembly includes: four pairs of concave bearing blocks, two pairs of telescopic buffer blocks, a U-shaped limiting metal block, a scissor-type bracket, a pair of buffer limiting shafts, two pairs of supporting limiting blocks, two pairs of buffer sleeve springs, two pairs of adsorption magnets, two pairs of adsorption electromagnets, and a pair of horizontal clamps.

[0009] A pair of telescopic limiting slots are respectively opened on the side wall of the battery compartment. A pair of buffer limiting shafts are inserted into the inner side of the pair of telescopic limiting slots on one side wall of the battery compartment. A pair of telescopic buffer blocks are respectively movably fitted on the pair of buffer limiting shafts. A U-shaped limiting metal block is installed on the long limiting plate. Four pairs of concave bearing blocks are respectively installed on two pairs of telescopic buffer blocks and the long limiting plate. A scissor bracket is installed on four pairs of concave bearing blocks through a shaft. Two pairs of support limiting blocks are installed on the inner side of the battery compartment. Two pairs of buffer sleeve springs are respectively fitted on a pair of buffer limiting shafts. Two pairs of adsorption magnets are respectively installed on two pairs of telescopic buffer blocks. Two pairs of adsorption electromagnets are respectively installed on the inner side of a pair of telescopic limiting slots. A pair of horizontal clamps are installed on the long limiting plate.

[0010] Preferably, the temperature control structure includes: a gathering tube, a vortex tube cooler, a cold air pipe, a hot air pipe, multiple cooling expansion components, and a pair of toothed branch pipes;

[0011] The vortex tube cooler is installed on the housing, the collecting tube is connected to the vortex tube cooler, the cold air pipe and the hot air pipe are respectively installed on the cold end outlet and the high temperature exhaust pipe of the vortex tube cooler, a pair of cooling split pipes are connected to the cooling pipe, and multiple cooling expansion components are respectively installed on the inside of multiple battery slots and connected to a pair of cooling split pipes.

[0012] Preferably, the cooling expansion assembly includes: a flexible drainage tube group, multiple metal heat dissipation fins, two pairs of exhaust heat dissipation tubes, four pairs of air-filled heat dissipation tubes, and multiple horn-shaped unidirectional plates;

[0013] The flexible drainage tube assembly is connected to a pair of toothed diverter tubes. Two pairs of exhaust heat dissipation tubes and four pairs of inflatable heat dissipation tubes are installed on a pair of long limiting plates and a pair of short limiting plates, respectively, and connected to the flexible drainage tube assembly. Multiple metal heat dissipation drainage plates are installed on a pair of long limiting plates and a pair of short limiting plates, respectively. Multiple horn-shaped unidirectional plates are installed on the inner side of the two pairs of exhaust heat dissipation tubes and the four pairs of inflatable heat dissipation tubes, respectively.

[0014] Preferably, the compression limiting structure includes: a set of fixing bolts and multiple buffer compression components;

[0015] The top cover is installed on the box body by a set of fixing bolts. The top cover has multiple disassembly ports, and multiple buffer compression components are installed in the disassembly ports on the top cover.

[0016] Preferably, the buffer compression assembly includes: a spiral-shaped limiting block, a spiral-shaped adsorption metal block, two pairs of trapezoidal telescopic blocks, two pairs of telescopic spiral-shaped limiting blocks, two pairs of adsorption metal rods, two pairs of snap-on magnets, a telescopic pressing shaft, a telescopic sleeve ring, a conductive magnet, a pressing limiting sleeve spring, and two pairs of horizontal sleeve springs.

[0017] A U-shaped limiting block is installed on the top cover. Two pairs of telescopic convex grooves are provided on the U-shaped limiting block. Two pairs of trapezoidal telescopic blocks are movably inserted into the inner sides of the two pairs of telescopic convex grooves. Two pairs of telescopic U-shaped limiting blocks are respectively fitted onto the two pairs of trapezoidal telescopic blocks. A U-shaped adsorption metal block is inserted into the U-shaped limiting block. Two pairs of adsorption metal rods are connected to the two pairs of telescopic convex grooves and the U-shaped adsorption metal block. Two pairs of snap-fit ​​magnets are respectively installed on the two pairs of trapezoidal telescopic blocks. A convex cylindrical magnetic conduction groove is provided on the U-shaped limiting block. A telescopic pressing shaft is movably inserted into the inner side of the convex cylindrical magnetic conduction groove. A telescopic sleeve ring is fitted onto the telescopic pressing shaft. A conduction magnet is installed onto the telescopic pressing shaft. A pressing limiting sleeve spring is fitted onto the telescopic pressing shaft. Two pairs of horizontal sleeve springs are respectively connected to the inner sides of the two pairs of convex telescopic blocks and the two pairs of telescopic convex grooves.

[0018] Preferably, the housing and top cover also include:

[0019] A pressure sensor is installed at the bottom end of the telescopic pressing shaft to monitor the extrusion pressure value in real time;

[0020] The controller, embedded inside the top cover, integrates a data processing module;

[0021] The wireless communication module connects to the controller and supports remote data transmission.

[0022] The controller is electrically connected to the adsorption electromagnet, the eddy current tube cooler, and the pressure sensor, forming a closed-loop control system.

[0023] Preferably, the all-solid-state battery pack further includes:

[0024] Multiple all-solid-state battery cells are arranged in an array within the battery compartment;

[0025] The conductive connector, made of flexible graphene, electrically connects the positive and negative electrodes of adjacent battery cells.

[0026] The thermal fuse is integrated into the middle of the conductive connector, and the metal wire is selected according to the melting temperature threshold.

[0027] The temperature fuse is electrically connected to the controller via a wiring harness, forming an over-temperature protection mechanism.

[0028] A membrane-free all-solid-state battery and its manufacturing process include the following steps:

[0029] Step S1: Material pretreatment and component assembly

[0030] The silicone-graphene composite elastic layer is formed by molding, with a thickness controlled to 2mm; the bracket is hinged to the long limiting plate and telescopic buffer block by four pairs of concave bearing blocks; an insulating coating is applied to the inner wall of the convex cylindrical groove, and a displacement sensor is installed.

[0031] Step S2: Pre-assembly of the snap-fit ​​structure

[0032] Connect a pair of long limiting plates and a pair of short limiting plates to form a U-shaped frame using a scissor bracket. Adjust the spring preload of the buffer kit to 75% of the design value. Install an adsorption electromagnet in the telescopic limiting groove and align it with the adsorption magnet on the telescopic buffer block.

[0033] Step S3: Battery pack integration and testing component calibration

[0034] The all-solid-state battery cells are arranged in a U-shape and inserted into the U-shaped frame. The vertical height of the scissor bracket is adjusted by the buffer spring. The detection telescopic rod is connected to the detection ring, and the zero point of the displacement sensor is calibrated to ensure that the compression of the detection buffer spring deviates from the design value by ≤5%. A thermal fuse is welded to the middle of the conductive connecting piece, and the melted position is marked by laser marking.

[0035] Step S4: Temperature control system connection and airtightness test

[0036] The air inlet of the vortex tube cooler is sealed and connected to the air inlet of the housing. The cooling pipe and the toothed split pipe are connected by a quick connector. Pressure testing showed no leakage.

[0037] Step S5: Overall Machine Debugging and Safety Verification

[0038] Start the controller and receive pressure, temperature, and strain data through the wireless communication module to verify the response time of the multi-parameter fusion algorithm; simulate battery expansion conditions: apply a radial load to a deformation of 5mm using a hydraulic cylinder, and the detection system should trigger a three-level warning and cut off the charging and discharging circuit.

[0039] Preferably, in step S3, the conductive connecting sheet is prepared by using a flexible graphene film to connect the battery cells via an ultrasonic welding process, with the welding energy controlled at;

[0040] In step S4, the parameters of the vortex tube cooler are set as follows: the compressed air inlet pressure is adjusted to the set range;

[0041] Redundancy design for safety verification in step S5: while disconnecting the charging and discharging circuit, activate the emergency locking function of the horizontal clamp.

[0042] This invention discloses a membrane-free all-solid-state battery and its manufacturing process. It employs a scissor-type support and a silicone-graphene elastic layer to construct a U-shaped frame, allowing the battery to deform freely within a 10%–30% volume expansion range, avoiding stress concentration problems caused by traditional rigid fixing. A dual-redundant detection system integrating displacement sensors and strain gauges captures the battery's radial deformation and stress changes in real time. A vortex tube cooler driven by the wind power of a moving vehicle separates compressed air into low-temperature and high-temperature airflows. The low-temperature airflow is injected into the inside of the U-shaped rubber ring through a flexible drainage tube assembly, exchanges heat with the metal heat dissipation fins, and is then discharged unidirectionally, forming a highly efficient heat dissipation cycle. Combined with a magnetic quick-disassembly structure and a closed-loop control system, it enables rapid replacement of single cells and coordinated control of pressure, temperature, and deformation parameters. Attached Figure Description

[0043] Figure 1 This is a three-dimensional cross-sectional view of a membrane-free all-solid-state battery and its manufacturing process as described in this invention.

[0044] Figure 2 This is a three-dimensional partial cross-sectional view of a membrane-free all-solid-state battery and its manufacturing process as described in this invention.

[0045] Figure 3 This is a three-dimensional cross-sectional view of the snap-fit ​​structure of the membrane-free all-solid-state battery and its manufacturing process described in this invention.

[0046] Figure 4 This is a three-dimensional cross-sectional view of the top cover of the membrane-free all-solid-state battery and its manufacturing process described in this invention.

[0047] Figure 5 This is a three-dimensional cross-sectional schematic diagram of the telescopic component of the membrane-free all-solid-state battery and its manufacturing process described in this invention.

[0048] Figure 6 This is a front cross-sectional view of a membrane-free all-solid-state battery and its manufacturing process as described in this invention.

[0049] Figure 7 This is a left-side cross-sectional view of a membrane-free all-solid-state battery and its manufacturing process as described in this invention.

[0050] Figure 8 This is a top cross-sectional view of a membrane-free all-solid-state battery and its manufacturing process as described in this invention.

[0051] Figure 9 This is a right-side cross-sectional view of a membrane-free all-solid-state battery and its manufacturing process as described in this invention.

[0052] Figure 10 for Figure 3 A magnified view of the letter "A" in the image.

[0053] Figure 11 for Figure 6 A magnified view of a section labeled "A1".

[0054] Figure 12 for Figure 6 A magnified view of section "A2" in the middle.

[0055] Figure 13 for Figure 8 A magnified view of part "A3" in the middle.

[0056] Figure 14 for Figure 4 A magnified view of the "B" in the middle.

[0057] Figure 15 for Figure 6 A magnified view of "B1" in the middle.

[0058] Figure 16 for Figure 5 A magnified view of the "C" in the middle.

[0059] Figure 17 for Figure 9 A magnified view of a portion of "C1".

[0060] In the diagram: 1. Buckle structure; 2. Temperature control structure; 3. Extrusion limiting structure; 4. Housing; 5. Top cover; 6. All-solid-state battery pack; 11. Extrusion detection assembly; 12. Telescopic assembly; 13. Silicone-graphene composite elastic layer; 14. Long limiting plate; 15. Short limiting plate; 20. Toothed shunt pipe; 21. Cooling expansion assembly; 30. Fixing bolt group; 31. Buffer extrusion assembly; 111. Detection rod; 112. Detection telescopic rod; 113. Detection ring; 114. Detection buffer spring; 115. Displacement sensor; 116. Strain gauge; 121. Concave bearing block; 122. Telescopic buffer block; 123. U-shaped limiting metal block; 124. Scissor lift. 125. Buffer limit shaft; 126. Support limit block; 127. Buffer sleeve spring; 128. Adsorption magnet; 129. Adsorption electromagnet; 211. Flexible drainage tube assembly; 212. Metal heat dissipation drainage plate; 213. Exhaust heat dissipation pipe; 214. Inflatable heat dissipation pipe; 215. Horn-shaped one-way plate; 311. U-shaped limit block; 312. U-shaped adsorption metal block; 313. Trapezoidal telescopic block; 314. Telescopic U-shaped limit block; 315. Adsorption metal rod; 316. Snap-on magnet; 317. Telescopic pressing shaft; 318. Telescopic sleeve ring; 319. Conductive magnet; 320. Pressing limit sleeve spring; 321. Horizontal sleeve spring. Detailed Implementation

[0061] The present invention will now be described in detail with reference to the accompanying drawings, and embodiments will be provided.

[0062] Please see Figure 1-17 Traditional battery modules often use rigid metal clamps or hard plastic brackets to fix the battery. This design cannot adapt to the deformation requirements of the battery during charge-discharge cycles when lithium-ion insertion / extraction causes volume expansion. This can easily lead to stress concentration at the electrode-electrolyte interface, causing delamination, cracks, or even short circuits. Current technologies mainly rely on passive natural cooling or liquid cooling systems, and can only indirectly infer the battery state through temperature sensors. When localized hot spots form, traditional solutions cannot respond quickly due to delayed heat conduction, leading to heat accumulation and a chain reaction of thermal runaway.

[0063] Therefore, this application protects a membrane-free all-solid-state battery and its manufacturing process. The all-solid-state battery pack 6 is movably inserted into the inner side of the snap-fit ​​structure 1. The snap-fit ​​structure 1 flexibly compresses the solid-state battery and compresses the outer frame of the solid-state battery in two pairs of U-shaped compressions in the horizontal direction. At the same time, the expansion inside the U-shaped compression is detected. In the snap-fit ​​structure 1, a pair of long limiting plates 14 and a pair of short limiting plates 15 are connected by a scissor bracket 124 to form a U-shaped frame, which performs four-sided horizontal compression on the all-solid-state battery pack 6 and fixes the solid-state battery in four-sided horizontal compression. The expansion of the solid-state battery is monitored by the detection compression component 11. Before the solid-state battery burns, the expansion of the solid-state battery will exceed a certain fixed value, thus producing the phenomenon of expansion and combustion. At the same time, the solid-state battery is compressed and fixed by the telescopic component 12. The air during the operation of the car is diverted by the temperature control structure 2. The faster the operating speed, the greater the wind force. By converting the wind force into low-temperature air, the solid-state battery inside the telescopic component 12 is rapidly cooled.

[0064] Furthermore, the solid-state battery is inserted between a pair of long limiting plates 14 and a pair of short limiting plates 15. The buffer sleeve spring 127 extends and retracts along the buffer limiting shaft 125, driving the telescopic buffer blocks 122 on them. This causes the two pairs of telescopic buffer blocks 122 to extend and retract along the buffer limiting shaft 125, respectively driving the concave bearing blocks 121 on them. The concave bearing blocks 121 then drive the scissor-type brackets 124 on them, thereby changing the horizontal distance of the scissor-type brackets 124, thus changing the vertical height of the scissor-type brackets 124, and consequently altering the compression effect. When the electromagnet 129 is energized, its magnetism drives the magnet 128, thereby changing the distance between the pair of telescopic buffer blocks 122 and thus altering the telescopic effect of the scissor-type bracket 124. The solid-state battery is then clamped and fixed by horizontal clamps on a pair of long limiting plates 14 and a pair of short limiting plates 15. In the clamped state, the operating handle and pressure lever are horizontal, achieving horizontal clamping force through mechanical linkage. When the solid-state battery expands during charging or generating electricity, this expansion drives the detection telescopic rod 11. 2. This allows the telescopic rod 112 to stably extend and retract along the inner side of the convex cylindrical groove on the detection rod 111. The telescopic rod 112 drives the detection ring 113, which in turn drives the detection buffer spring 114. This causes the detection ring 113 to drive the telescopic rod 112 to flexibly compress the solid-state battery. Through the cooperation of the detection ring 113 and the displacement sensor 115 inside the convex cylindrical groove, the expansion rate is detected. When the expansion reaches a certain size, the telescopic rod 112 compresses the convex cylindrical groove. The strain gauge 116 inside the cylindrical groove is compressed, thus the strain gauge 116 is subjected to pressure, causing the strain gauge 116 to generate a signal, thereby achieving an early warning for solid-state batteries that have expanded beyond a certain size. The relative displacement between the detection ring 113 and the detection telescopic rod 112 reflects the radial expansion value of the battery. When the displacement exceeds a preset threshold, a primary warning is triggered. Excessive battery expansion causes the detection telescopic rod 112 to compress the inner wall of the convex cylindrical groove. The change in resistance of the strain gauge 116 is converted into an electrical signal. When the strain value exceeds the safe range, the linkage controller activates emergency measures.

[0065] Furthermore, an air inlet is opened at the front end of the housing 4 and connected to the gathering pipe. Utilizing Bernoulli's principle, the airflow is accelerated, improving the intake efficiency of the vortex tube cooler. Air is drawn through the gathering pipe to the inner side of the vortex tube cooler, where it is converted into low-temperature and high-temperature gases. The low-temperature gas is drawn through the cooling pipe to the toothed diverter pipe 20, which then guides the gas to the inner side of multiple flexible diverter pipe groups 211. The high-temperature gas is discharged through the hot air pipe. The cooling airflow is distributed to each battery compartment via the flexible diverter pipe groups 211, and simultaneously, the gas is drawn through the flexible diverter pipe groups 211 to a pair of long limiting... The inner side of the plate 14 and the pair of short limiting plates 15 inflatable heat dissipation pipes 214 is guided by low temperature gas to the inner side of the loop support limiting blocks 126 on the pair of long limiting plates 14 and the pair of short limiting plates 15. The low temperature gas diverts the metal heat dissipation fins 212. The gas that has absorbed heat is discharged through the exhaust heat dissipation pipe 213. The low temperature airflow enters the inner side of the loop support limiting block 126 through the inflatable heat dissipation pipe 214, absorbs heat after contacting the metal heat dissipation fins 212, and the heated airflow is discharged through the exhaust heat dissipation pipe 213, forming a one-way circulation. The intake and exhaust are guided in one direction by multiple horn-shaped one-way plates 215.

[0066] Furthermore, the top cover 5 is fixed to the top of the housing 4 by the fixing bolt assembly 30. The top cover 5 drives the loop-shaped limiting block 311 on it. When the solid-state battery is inserted into the loop-shaped limiting block 311, the compression causes the two pairs of trapezoidal telescopic blocks 313 to stably extend and retract horizontally along the inner side of the telescopic convex groove. The compression of the trapezoidal telescopic blocks 313 by the horizontal sleeve spring makes it easy to insert the battery but difficult to remove it. When it is necessary to remove the solid-state battery, the high-voltage shaft is extended and retracted, which drives the conductive magnet 319 on it. The conductive magnet 319 and the loop-shaped adsorption metal block 312 transmit the magnetism to the two pairs of adsorption metal rods 315. Metal rods 315 magnetically attract snap-on magnets 316, which in turn drive trapezoidal telescopic blocks 313. These blocks are then limited by telescopic loop-shaped stop blocks 314 on the trapezoidal telescopic blocks 313. Simultaneously, the telescopic movement of the trapezoidal telescopic blocks 313 retracts the vertical limit of the loop-shaped stop blocks 311, thus releasing the solid-state battery from its compression. The current of the electromagnet 129 is adjusted based on pressure sensor data to change the clamping force. When the battery temperature exceeds 75°C, the eddy current tube cooler is activated at maximum power, and the fan is activated to accelerate airflow. When the strain gauge 116 signal is triggered, the controller cuts off the charging and discharging circuit of the corresponding battery cell to prevent thermal runaway.

[0067] In summary, battery safety management is achieved through deep integration of mechanical, electrical, and thermal management systems. The module employs a snap-fit ​​structure 1, where a pair of long limiting plates 14 and a pair of short limiting plates 15 form a U-shaped frame via a scissor-type bracket 124, applying horizontal compression to the battery from all four sides. The silicone-graphene composite elastic layer 13 and the buffer spring 127 work together to allow the battery to expand freely within a controllable range. The compression detection component 11 integrates a displacement sensor 115 and a strain gauge 116. The temperature control system utilizes the wind power from the vehicle's movement, which is separated into low-temperature and high-temperature airflows by a vortex tube cooler. The low-temperature airflow is injected into the inside of the U-shaped rubber ring through a flexible drainage tube assembly 211, where it exchanges heat with the metal heat dissipation fins 212 before being discharged unidirectionally, forming a highly efficient heat dissipation cycle. The compression limiting structure 3 features a magnetic quick-disassembly design; pressing the telescopic pressing rod 317 activates the snap-fit ​​magnet 316 via a conductive magnet 319, enabling rapid battery replacement. This solution improves the accuracy of thermal runaway early warning through dual-sensor redundant detection, closed-loop control, and active thermal management, providing a complete solution for the commercialization of all-solid-state batteries.

[0068] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A membrane-free all-solid-state battery, characterized in that, include: The enclosure comprises a housing, a top cover, and an all-solid-state battery pack. The bottom of the housing has multiple battery slots arranged in a U-shape. The all-solid-state battery pack is installed inside the multiple battery slots via multiple snap-fit ​​structures. The top cover is bolted to the housing and has a compression limiting structure. The housing has a temperature control structure. The snap-fit ​​structure includes: a pair of long limiting plates, a pair of short limiting plates, a silicone-graphene composite elastic layer, two pairs of telescopic components, and multiple detection and compression components; A pair of long limiting plates and a pair of short limiting plates are installed in a rectangular shape on the inside of the battery compartment via two pairs of telescopic components. Multiple detection and extrusion components are evenly installed on the pair of long limiting plates and the pair of short limiting plates. A silicone-graphene composite elastic layer is installed on the top of the inside of the battery compartment. A U-shaped support limiting block is provided on the pair of long limiting plates and the pair of short limiting plates. The extrusion detection assembly includes: a detection rod, a detection telescopic rod, a detection ring, a detection buffer spring, a displacement sensor, and strain gauges; Multiple detection rods are respectively inserted into the long limit plate and the short limit plate. The detection rods are provided with convex cylindrical grooves. The detection ring is fitted onto the detection telescopic rod. The detection ring and the detection telescopic rod are movably inserted into the inner side of the convex cylindrical groove. The displacement sensor is installed on the inner side of the detection ring and the convex cylindrical groove. The strain gauge is installed on the inner side of the convex cylindrical groove. The detection buffer spring is fitted onto the detection telescopic rod. The extrusion limiting structure includes: a set of fixing bolts and multiple buffer extrusion components; The top cover is installed on the box body by a set of fixing bolts. The top cover has multiple disassembly ports, and multiple buffer compression components are installed in the disassembly ports on the top cover. The buffer compression assembly includes: a loop-shaped limiting block, a loop-shaped adsorption metal block, two pairs of trapezoidal telescopic blocks, two pairs of telescopic loop-shaped limiting blocks, two pairs of adsorption metal rods, two pairs of snap-on magnets, a telescopic pressing shaft, a telescopic sleeve ring, a conductive magnet, a pressing limiting sleeve spring, and two pairs of horizontal sleeve springs. A U-shaped limiting block is installed on the top cover. Two pairs of telescopic convex grooves are provided on the U-shaped limiting block. Two pairs of trapezoidal telescopic blocks are movably inserted into the inner sides of the two pairs of telescopic convex grooves. Two pairs of telescopic U-shaped limiting blocks are respectively fitted onto the two pairs of trapezoidal telescopic blocks. A U-shaped adsorption metal block is inserted into the U-shaped limiting block. Two pairs of adsorption metal rods are connected to the two pairs of telescopic convex grooves and the U-shaped adsorption metal block. Two pairs of snap-fit ​​magnets are respectively installed on the two pairs of trapezoidal telescopic blocks. A convex cylindrical magnetic conduction groove is provided on the U-shaped limiting block. A telescopic pressing shaft is movably inserted into the inner side of the convex cylindrical magnetic conduction groove. A telescopic sleeve ring is fitted onto the telescopic pressing shaft. A conduction magnet is installed onto the telescopic pressing shaft. A pressing limiting sleeve spring is fitted onto the telescopic pressing shaft. Two pairs of horizontal sleeve springs are respectively connected to the inner sides of the two pairs of convex telescopic blocks and the two pairs of telescopic convex grooves.

2. The membrane-free all-solid-state battery according to claim 1, characterized in that, The telescopic assembly includes: four pairs of concave bearing blocks, two pairs of telescopic buffer blocks, a U-shaped limiting metal block, a scissor-type bracket, a pair of buffer limiting shafts, two pairs of supporting limiting blocks, two pairs of buffer sleeve springs, two pairs of adsorption magnets, two pairs of adsorption electromagnets, and a pair of horizontal clamps. A pair of telescopic limiting slots are respectively opened on the side wall of the battery compartment. A pair of buffer limiting shafts are inserted into the inner side of the pair of telescopic limiting slots on one side wall of the battery compartment. A pair of telescopic buffer blocks are respectively movably fitted on the pair of buffer limiting shafts. A U-shaped limiting metal block is installed on the long limiting plate. Four pairs of concave bearing blocks are respectively installed on two pairs of telescopic buffer blocks and the long limiting plate. A scissor bracket is installed on four pairs of concave bearing blocks through a shaft. Two pairs of support limiting blocks are installed on the inner side of the battery compartment. Two pairs of buffer sleeve springs are respectively fitted on a pair of buffer limiting shafts. Two pairs of adsorption magnets are respectively installed on two pairs of telescopic buffer blocks. Two pairs of adsorption electromagnets are respectively installed on the inner side of a pair of telescopic limiting slots. A pair of horizontal clamps are installed on the long limiting plate.

3. A membrane-free all-solid-state battery according to claim 2, characterized in that, The temperature control structure includes: a gathering tube, a vortex tube cooler, a cold air pipe, a hot air pipe, multiple cooling expansion components, and a pair of toothed branch pipes; the vortex tube cooler is installed on the housing, the gathering tube is connected to the vortex tube cooler, the cold air pipe and the hot air pipe are respectively installed on the cold end outlet and the high temperature exhaust pipe of the vortex tube cooler, a pair of cooling branch pipes are connected to the cooling pipe, and multiple cooling expansion components are respectively installed on the inner side of multiple battery slots and connected to the pair of cooling branch pipes.

4. A membrane-free all-solid-state battery according to claim 3, characterized in that, The cooling expansion assembly includes: a flexible drainage pipe group, multiple metal heat dissipation fins, two pairs of exhaust heat dissipation pipes, four pairs of air-filled heat dissipation pipes, and multiple horn-shaped unidirectional plates. The flexible drainage tube assembly is connected to a pair of toothed diverter tubes. Two pairs of exhaust heat dissipation tubes and four pairs of inflatable heat dissipation tubes are installed on a pair of long limiting plates and a pair of short limiting plates, respectively, and connected to the flexible drainage tube assembly. Multiple metal heat dissipation drainage plates are installed on a pair of long limiting plates and a pair of short limiting plates, respectively. Multiple horn-shaped unidirectional plates are installed on the inner side of the two pairs of exhaust heat dissipation tubes and the four pairs of inflatable heat dissipation tubes, respectively.

5. A membrane-free all-solid-state battery according to claim 4, characterized in that, The enclosure and top cover also include: A pressure sensor is installed at the bottom end of the telescopic pressing shaft to monitor the extrusion pressure value in real time; The controller, embedded inside the top cover, integrates a data processing module; The wireless communication module connects to the controller and supports remote data transmission. The controller is electrically connected to the adsorption electromagnet, the eddy current tube cooler, and the pressure sensor, forming a closed-loop control system.

6. A membrane-free all-solid-state battery according to claim 5, characterized in that, The all-solid-state battery pack also includes: Multiple all-solid-state battery cells are arranged in an array within the battery compartment; The conductive connector, made of flexible graphene, electrically connects the positive and negative electrodes of adjacent battery cells. The thermal fuse is integrated into the middle of the conductive connector, and the metal wire is selected according to the melting temperature threshold. The temperature fuse is electrically connected to the controller via a wiring harness, forming an over-temperature protection mechanism.

7. A manufacturing process applicable to the membrane-free all-solid-state battery according to any one of claims 1-6, characterized in that, The following steps are included: Step S1: Material pretreatment and component assembly The silicone-graphene composite elastic layer is formed by molding, with the thickness controlled to 2mm; the bracket is hinged to the long limiting plate and telescopic buffer block by four pairs of concave bearing blocks; an insulating coating is applied to the inner wall of the convex cylindrical groove, and a displacement sensor is installed. Step S2: Pre-assembly of the snap-fit ​​structure A pair of long limiting plates and a pair of short limiting plates are connected by a scissor bracket to form a U-shaped frame. The preload of the buffer sleeve spring at the cold end outlet is adjusted to 75% of the design value. An adsorption electromagnet is installed in the telescopic limiting groove and aligned with the adsorption magnet on the telescopic buffer block. Step S3: Battery pack integration and testing component calibration The all-solid-state battery cells are arranged in a U-shape and inserted into the U-shaped frame. The vertical height of the scissor bracket is adjusted by the buffer spring. The detection telescopic rod is connected to the detection ring, the zero point of the displacement sensor is calibrated, and the deviation of the compression of the detection buffer spring from the design value is ≤5%. A thermal fuse is welded to the middle of the conductive connecting piece, and the melting position is marked by laser marking. Step S4: Temperature control system connection and airtightness test The air inlet of the vortex tube cooler is sealed and connected to the air inlet of the housing. The cooling pipe and the toothed split pipe are connected by quick connectors. Pressure test shows no leakage. Step S5: Overall Machine Debugging and Safety Verification Start the controller and receive pressure, temperature, and strain data through the wireless communication module to verify the response time of the multi-parameter fusion algorithm; simulate battery expansion conditions: apply a radial load to a deformation of 5mm using a hydraulic cylinder, and the detection system should trigger a three-level warning and cut off the charging and discharging circuit.

8. The membrane-free all-solid-state battery manufacturing process according to claim 7, characterized in that, Preparation of conductive connecting pieces in step S3: Flexible graphene films are used to connect battery cells via ultrasonic welding process; In step S4, the parameters of the vortex tube cooler are set as follows: the compressed air inlet pressure is adjusted to the set range; Redundancy design for safety verification in step S5: while disconnecting the charging and discharging circuit, activate the emergency locking function of the horizontal clamp.

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