Waterproof structure of solid-state battery

Abstract

The application relates to the technical field of batteries, in particular to a waterproof structure of a solid-state battery, which comprises a connecting sleeve, a waterproof sleeve and an adjusting assembly; the connecting sleeve is installed in a threading hole; the waterproof sleeve is coaxially arranged in the connecting sleeve and comprises a fixed ring fixed with the connecting sleeve, a movable ring sliding along the connecting sleeve in the axial direction and a plurality of waterproof rings connected between the fixed ring and the movable ring; two adjacent waterproof rings are sealingly connected through bellows; the two adjacent waterproof rings and the bellows and the cable between the two have a clamping chamber; by pulling the movable ring to move in the direction away from the fixed ring, the plurality of waterproof rings are pulled apart, the waterproof rings drive the bellows to expand when moving, the volume of the clamping chamber is increased to form negative pressure, and then the local part of the cable in the clamping chamber is sucked outward by the negative pressure, the cable is fixed by using the negative pressure, compared with the traditional mode of extruding and clamping the cable, the damage to the cable is smaller, and the core in the cable will not overheat due to the extrusion of the cable.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more specifically to a waterproof structure for a solid-state battery. Background Technology

[0002] The waterproof structure of solid-state batteries is designed to ensure efficient, safe, and stable operation under various environmental conditions, especially when exposed to moisture, humidity, and chemicals. This waterproof design allows solid-state batteries to offer higher reliability and longer lifespan in complex and variable environments. The waterproof structure is typically applied at the cable exit point of the solid-state battery, commonly using a sealing ring. The initial clamping force between the sealing ring and the cable ensures a seal between the cable and the battery housing. To achieve a good seal, a large clamping force is often required between the sealing ring and the cable. This can easily lead to pressure and heat generation of the cable's internal core. Furthermore, the thermal expansion and contraction of the cable during use can increase or decrease the clamping force between the cable and the sealing ring, thus deteriorating the seal and affecting the waterproof effect. Summary of the Invention

[0003] This invention provides a waterproof structure for solid-state batteries to solve the problem of unstable sealing effect of existing sealing rings.

[0004] The waterproof structure of a solid-state battery according to the present invention adopts the following technical solution:

[0005] A waterproof structure for a solid-state battery, installed in a pre-drilled wiring hole on a battery box, includes a connecting sleeve, a waterproof sleeve, and an adjustment assembly. The connecting sleeve is installed in the wiring hole and is coaxial with the wiring hole and fits against the inner wall of the wiring hole. The waterproof sleeve is coaxially disposed inside the connecting sleeve and includes a fixed ring fixed to the connecting sleeve, a movable ring sliding along the axial direction of the connecting sleeve, and multiple waterproof rings located between the fixed ring and the movable ring. The fixed ring is located at one end of the connecting sleeve closer to the inside of the battery box, and a unidirectional structure is provided between the movable ring and the connecting sleeve to prevent the movable ring from moving towards the side closer to the fixed ring. The multiple waterproof rings are spaced apart along the axial direction of the connecting sleeve, with the outermost ring being... The two waterproof rings of the sleeve are connected to the fixed ring and the movable ring respectively, and the two adjacent waterproof rings are sealed together by a bellows. A compensation chamber is defined between the waterproof sleeve and the connecting sleeve, which is sealed to the outside of the battery box and communicates with the inside of the battery box. The cable passes through multiple waterproof rings, and there is a clamping chamber between the two adjacent waterproof rings, the bellows between them, and the cable. The movable ring moves away from the fixed ring to create a negative pressure in the clamping chamber, which causes the cable to deform and fit against the waterproof ring in the clamping chamber. The adjustment component increases the negative pressure in the clamping chamber when the temperature rises and decreases the negative pressure in the clamping chamber when the temperature falls.

[0006] Optionally, the adjustment assembly includes spring plates disposed on both sides of the waterproof ring axially. The spring plates are made of shape memory metal and are located in the clamping chamber. One end of the spring plate is fixed to the waterproof ring, and the other end is suspended and connected to the waterproof ring through a corrugated ring to define a sealed first adjustment chamber between the spring plate and the waterproof ring. The first adjustment chamber is connected to the compensation chamber. The clamping chamber is defined by the spring plates on two adjacent waterproof rings, the corrugated rings connected to the spring plates, the corrugated pipe between the two waterproof rings, and the cable. When the temperature rises, the spring plates contract, compressing the adjustment chamber, increasing the volume of the clamping chamber, and thus increasing the negative pressure.

[0007] Optionally, the adjustment assembly includes a fixed cylinder, a follower cylinder, and a replenishing component; the fixed cylinder is located in the compensation chamber and fixed to the fixed ring, and the inner wall of the fixed cylinder is provided with multiple storage grooves; there are multiple follower cylinders, each of which is installed on a movable waterproof ring and is in a sealed sliding fit with a storage groove on the inner wall of the fixed cylinder, and defines a second adjustment chamber with its corresponding storage groove, the second adjustment chamber being filled with a temperature-sensitive medium that expands when the temperature rises; the replenishing component is located between the fixed cylinder and the connecting sleeve, and when the movable ring moves away from the fixed ring to widen the gap between the multiple waterproof rings, thereby increasing the size of the second adjustment chamber, the replenishing component replenishes the second chamber with the temperature-sensitive medium.

[0008] Optionally, the supplementary component includes a supplementary shell, a partition ring, and a gas storage shell. The partition ring is installed inside the supplementary shell and divides the supplementary shell into a liquid chamber and a gas chamber. The liquid chamber is used to store the temperature-sensing medium, and the gas chamber is connected to the gas storage shell. The gas storage shell is made of a deformable flexible material and is fixedly connected to the supplementary shell. The partition ring slides unidirectionally with the inner wall of the supplementary shell. The supplementary shell allows the partition ring to move towards the liquid chamber side and prevents the partition ring from moving towards the gas chamber side. The liquid chamber is connected to the second regulating chamber through a hose.

[0009] Optionally, two adjacent waterproof rings are connected by a tension spring.

[0010] Optionally, a waterproof structure for a solid-state battery includes a water-resistant membrane, one side of which is connected to a movable ring and the other side to a connecting sleeve, forming a ring around the connecting sleeve, so that the interior of the water-resistant membrane communicates with the compensation chamber and is isolated from the outside.

[0011] Optionally, at least two transmission rods are connected to the movable ring, and the at least two transmission rods are symmetrically arranged about the axis of the movable ring; one end of the transmission rod is connected to the movable ring, and the other end is suspended and extends into the waterproof membrane; the transmission rod is provided with a retractable ratchet, and the inner wall of the connecting sleeve is provided with a ratchet rack, the ratchet meshes with the ratchet rack, and the ratchet rack allows the transmission rod to move away from the fixed ring with the movable ring and prevents the movable ring from moving closer to the fixed ring; by pressing the suspended ends of the two transmission rods together, the transmission rods are deformed, thereby disengaging the ratchet from the ratchet rack, and the movable ring can return to its initial position.

[0012] Optionally, the fixing ring has an air inlet that connects the inside of the battery box to the compensation chamber.

[0013] Optionally, a pull rod is provided on the movable ring.

[0014] Optionally, the waterproof ring is a rubber ring that fits the cable size.

[0015] The beneficial effects of this invention are as follows: The waterproof structure of the solid-state battery of this invention, by pulling the movable ring away from the fixed ring, causes multiple waterproof rings to widen their spacing. As the waterproof rings move, the corrugated pipe expands, increasing the volume of the clamping chamber and creating negative pressure. This negative pressure then draws the cable outward from a portion of the clamping chamber, securing it in place. Compared to traditional methods of clamping cables by compression, this method causes less damage to the cable and prevents overheating of the cable's internal core due to compression. Furthermore, the outer wall of the cable in a portion of the clamping chamber is drawn into the negative pressure chamber, resulting in a tighter fit with the waterproof rings and further improving the waterproofing effect.

[0016] Furthermore, as the cable's operating temperature rises, the outer wall of the cable's insulation layer softens due to heat, making it easier for it to be drawn into the clamping chamber by negative pressure. This reduces the volume of the clamping chamber and the negative pressure, thus weakening the clamping effect on the cable. Therefore, when the temperature rises, increasing the negative pressure in the clamping chamber by adjusting the components can compensate for the decrease in negative pressure and ensure the clamping effect of the clamping chamber on the cable. Conversely, when the temperature drops to return to ambient temperature, the outer wall of the cable's insulation layer regains its hardness and shrinks, causing the volume of the negative pressure chamber to increase, further increasing the negative pressure. This increases the force of the clamping chamber on the cable. Therefore, when the temperature drops, reducing the negative pressure in the clamping chamber by adjusting the components prevents excessive suction of the cable by the clamping chamber, keeping the clamping force of the clamping chamber on the cable as constant as possible, reducing the impact of temperature on the cable clamping force, and extending the cable's service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an embodiment of the waterproof structure of a solid-state battery according to the present invention, installed in a battery box.

[0019] Figure 2 This is a schematic diagram showing an embodiment of a waterproof structure for a solid-state battery according to the present invention in a disassembled state.

[0020] Figure 3 for Figure 1 The front view;

[0021] Figure 4 for Figure 3 Schematic diagram of cross section along the AA direction;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 for Figure 3 A cross-sectional view along the CC direction;

[0024] Figure 7 for Figure 6 Enlarged view of point D in the middle;

[0025] Figure 8 for Figure 7 Enlarged view of point F in the middle;

[0026] Figure 9 for Figure 7 Enlarged view of point E in the middle;

[0027] Figure 10 This is a schematic diagram of another embodiment of a waterproof structure for a solid-state battery according to the present invention;

[0028] Figure 11 This is a schematic diagram showing the disassembled state of another embodiment of the waterproof structure of a solid-state battery according to the present invention;

[0029] Figure 12 This is a cross-sectional schematic diagram of another embodiment of a waterproof structure for a solid-state battery according to the present invention;

[0030] Figure 13 A cross-sectional view of another embodiment of a waterproof structure for a solid-state battery according to the present invention. Figure 2 ;

[0031] Figure 14 for Figure 13 Enlarged schematic diagram of point G in the middle.

[0032] In the diagram: 100, battery box; 200, connecting sleeve; 300, waterproof sleeve; 310, fixing ring; 320, moving ring; 321, transmission rod; 322, pull rod; 330, waterproof ring; 340, bellows; 350, tension spring; 400, waterproof membrane; 510, spring; 511, bellows ring; 520, fixing cylinder; 530, follower cylinder; 540, supplementary component; 541, supplementary shell; 542, separator ring; 543, gas storage shell; 544, hose. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] An embodiment of the waterproof structure for a solid-state battery according to the present invention is installed in a pre-drilled wiring hole on the battery box 100, such as... Figures 1 to 9 As shown, it includes a connecting sleeve 200, a waterproof sleeve 300, and an adjustment assembly.

[0035] The connecting sleeve 200 is installed in the wire hole and is coaxial with the wire hole and fits against the inner wall of the wire hole. Specifically, the connecting sleeve 200 can be threaded to the wire hole or glued or welded to the wire hole after being sleeved, so as to fix the connecting sleeve 200 to the wire hole and ensure the seal between the connecting sleeve 200 and the peripheral wall of the wire hole.

[0036] A waterproof sleeve 300 is coaxially disposed within a connecting sleeve 200 and includes a fixed ring 310 fixed to the connecting sleeve 200, a movable ring 320 sliding along the axial direction of the connecting sleeve 200, and a plurality of waterproof rings 330 located between the fixed ring 310 and the movable ring 320. The fixed ring 310 is located at one end of the connecting sleeve 200 near the interior of the battery box 100, and the movable ring 320 is located at one end of the connecting sleeve 200 near the exterior of the battery box 100. A unidirectional structure is provided between the fixed ring 310 and the connecting sleeve 200 to prevent the movable ring 320 from moving towards the fixed ring 310. The plurality of waterproof rings 330 are spaced apart along the axial direction of the connecting sleeve 200, and the two outermost waterproof rings 330 are connected to the fixed ring 310 and the movable ring 320 respectively. Adjacent waterproof rings 330 are sealed together by a bellows 340, thereby allowing the waterproof sleeve 300 to extend axially.

[0037] A compensating chamber is defined between the waterproof sleeve 300 and the connecting sleeve 200, which is externally sealed to the battery box 100 and internally connected to it. The cable passes through multiple waterproof rings 330. A clamping chamber is formed between adjacent waterproof rings 330, the corrugated pipe 340 between them, and the cable. A movable ring 320 moves away from the fixed ring 310, creating a negative pressure in the clamping chamber, causing partial deformation of the cable within the clamping chamber to conform to the waterproof ring 330. The waterproof ring 330 is a rubber ring adapted to the cable size to ensure a flexible fit and seal.

[0038] The regulating component increases the negative pressure in the clamping chamber when the temperature rises and decreases the negative pressure in the clamping chamber when the temperature falls.

[0039] Initially, the multiple waterproof rings 330 are close together to facilitate cable passage. Then, the movable ring 320 is pulled away from the fixed ring 310, causing the waterproof rings 330 to widen. As the waterproof rings 330 move, the corrugated tube 340 expands, increasing the volume of the clamping chamber and creating negative pressure. This negative pressure draws the cable outwards from a portion of the clamping chamber, securing it in place. Compared to traditional cable clamping methods, this method causes less damage to the cable and avoids overheating of the cable's internal core due to compression. Furthermore, the portion of the cable's outer wall within the clamping chamber is drawn into the negative pressure chamber, resulting in a tighter fit with the waterproof rings 330 and further enhancing the waterproofing effect.

[0040] Furthermore, as the cable's operating temperature rises, the outer wall of the cable's insulation layer softens due to heat, making it easier for it to be drawn into the clamping chamber by negative pressure. This reduces the volume of the clamping chamber and the negative pressure, thus weakening the clamping effect on the cable. Therefore, when the temperature rises, increasing the negative pressure in the clamping chamber by adjusting the components can compensate for the decrease in negative pressure and ensure the clamping effect of the clamping chamber on the cable. Conversely, when the temperature drops to return to ambient temperature, the outer wall of the cable's insulation layer regains its hardness and shrinks, causing the volume of the negative pressure chamber to increase, further increasing the negative pressure. This increases the force of the clamping chamber on the cable. Therefore, when the temperature drops, reducing the negative pressure in the clamping chamber by adjusting the components prevents excessive suction of the cable by the clamping chamber, keeping the clamping force of the clamping chamber on the cable as constant as possible, reducing the impact of temperature on the cable clamping force, and extending the cable's service life.

[0041] In this embodiment, the adjustment assembly includes spring plates 510 disposed on both axially upward sides of the waterproof ring 330. The spring plates 510 are made of shape memory metal and are located in the clamping chamber. One end of the spring plate 510 is fixed to the waterproof ring 330, and the other end is suspended and connected to the waterproof ring 330 through a corrugated ring 511, thereby defining a sealed first adjustment chamber between the spring plate 510 and the waterproof ring 330. The first adjustment chamber communicates with the compensation chamber. The spring plates 510 on two adjacent waterproof rings 330, the corrugated rings 511 connected to the spring plates 510, the corrugated tube 340 between the two waterproof rings 330, and the cable define the clamping chamber. When the cable temperature rises, the temperature in its vicinity also rises. The spring plates 510 contract when the temperature rises, compressing the adjustment chamber and increasing the volume of the clamping chamber, thereby increasing the negative pressure. When the temperature drops back to ambient temperature, the spring plates 510 expand, increasing the adjustment chamber and compressing the clamping chamber, thereby reducing the negative pressure in the clamping chamber.

[0042] In this embodiment, two adjacent waterproof rings 330 are connected by a tension spring 350, so that the multiple waterproof rings 330 are close together in the initial state, which facilitates the passage of cables.

[0043] In this embodiment, the waterproof structure of a solid-state battery further includes a water-resistant membrane 400. One side of the water-resistant membrane 400 is connected to the movable ring 320, and the other side is connected to the connecting sleeve 200, forming a ring around the connecting sleeve 200. This allows the interior of the water-resistant membrane 400 to communicate with the compensation chamber while isolating it from the outside. The water-resistant membrane 400 isolates the compensation chamber from the outside of the battery box 100 without affecting the movement of the movable ring 320.

[0044] In this embodiment, at least two transmission rods 321 are connected to the movable ring 320, and the at least two transmission rods 321 are symmetrically arranged about the axis of the movable ring 320. One end of the transmission rod 321 is connected to the movable ring 320, and the other end is suspended and extends into the water-proof membrane 400. The transmission rod 321 is provided with retractable ratchet teeth, and the inner wall of the connecting sleeve 200 is provided with a ratchet rack. The ratchet teeth and the ratchet rack mesh, and the ratchet rack allows the transmission rod 321 to move away from the fixed ring 310 with the movable ring 320 and prevents the movable ring 320 from moving closer to the fixed ring 310. By pressing the suspended ends of the two transmission rods 321 closer to each other, the transmission rods 321 are deformed, thereby disengaging the ratchet teeth from the ratchet rack, and the movable ring 320 can return to its initial position.

[0045] In this embodiment, the fixing ring 310 has an air inlet that connects the inside of the battery box 100 with the compensation chamber.

[0046] In this embodiment, a pull rod 322 is provided on the movable ring 320, and the pull rod 322 is located on the inner side of the ring formed by the water-proof membrane 400.

[0047] In some other embodiments, such as Figures 10 to 14 As shown, unlike the above embodiment, the clamping chamber is defined by two adjacent waterproof rings 330, a corrugated pipe 340 between them, and a cable. The adjustment assembly includes a fixed cylinder 520, a follower cylinder 530, and a supplementary component 540; the fixed cylinder 520 is located in the compensation chamber and fixed to the fixed ring 310, and the inner wall of the fixed cylinder 520 is provided with multiple storage slots. There are multiple follower cylinders 530, each of which is installed on a movable waterproof ring 330 and is in a sealed sliding fit with a storage slot on the inner wall of the fixed cylinder 520, and defines a second adjustment chamber with its corresponding storage slot. The second adjustment chamber is filled with a temperature-sensitive medium, which expands when the temperature rises. Each follower cylinder 530 is provided with a through hole (not shown in the figure), so that the outer ring of each corrugated pipe 330 can communicate with the inside of the battery box 100 through an air inlet. The supplementary component 540 is disposed between the fixed cylinder 520 and the connecting sleeve 200. When the movable ring 320 moves away from the fixed ring 310, the multiple waterproof rings 330 are spaced apart, thereby increasing the size of the second adjustment chamber, the supplementary component 540 replenishes the temperature sensing medium to the second chamber.

[0048] The replenishment component 540 includes a replenishment shell 541, a partition ring 542, and a gas storage shell 543. The partition ring 542 is installed inside the replenishment shell 541, dividing the replenishment shell 541 into a liquid chamber and a gas chamber. The liquid chamber is used to store the temperature-sensing medium, and the gas chamber is connected to the gas storage shell 543. The partition ring 542 seals against the liquid chamber defined by the replenishment shell 541. The gas storage shell 543 is made of a deformable flexible material and is fixedly connected to the replenishment shell 541. The partition ring 542 slides unidirectionally against the inner wall of the replenishment shell 541. The replenishment shell 541 allows the partition ring 542 to move towards the liquid chamber side and prevents the partition ring 542 from moving towards the gas chamber side. Specifically, the partition ring 542 and the inner wall of the replenishment shell 541 can be engaged by a ratchet structure. The liquid chamber is connected to the second regulating chamber through a hose 544. When the movable ring 320 is initially pulled to widen the gap between the multiple waterproof rings 330, the volume of the second regulating chamber increases, drawing temperature-sensitive medium from the liquid chamber. Consequently, the volume of the temperature-sensitive medium in the liquid chamber decreases, and the separating ring 542 moves accordingly until the movable ring 320 moves to the appropriate position, replenishing the second regulating chamber with a suitable amount of temperature-sensitive medium. Subsequently, when the temperature-sensitive medium in the second regulating chamber expands, because the separating ring 542 is restricted from movement by the replenishment shell 541, the temperature-sensitive medium in the second regulating chamber will not flow back into the liquid chamber. Instead, it pushes the follower cylinder 530, which in turn pushes the waterproof rings 330, increasing the volume of the clamping chamber and thus increasing the negative pressure within it. When the temperature-sensitive medium in the second regulating chamber contracts, the amount of contraction is insufficient to draw more temperature-sensitive medium from the liquid chamber. It only reduces the volume of the second regulating chamber, causing the waterproof rings 330 to move in the opposite direction via the follower cylinder 530, reducing the volume of the clamping chamber and thus decreasing the negative pressure within it.

[0049] Initially, the multiple waterproof rings 330 are close together under the action of the tension spring 350. After the cable passes through the multiple waterproof rings 330, the pull rod 322 is pulled, causing the movable ring 320 to move. This causes the multiple clamping chambers to increase, creating a negative pressure. At the same time, the waterproof rings 330 drive the follower cylinder 530 to move, increasing the volume of the second regulating chamber. The temperature-sensing medium is then drawn from the liquid chamber through the hose 544, replenishing the second regulating chamber with an appropriate amount of temperature-sensing medium. When the cable temperature rises, the temperature radiated to the second regulating chamber also rises. The temperature-sensing medium in the second regulating chamber expands, pushing the waterproof rings 330 to move through the follower cylinder 530, increasing the volume of the clamping chamber and the negative pressure. When the cable temperature drops back to ambient temperature, the temperature radiated to the second regulating chamber also decreases. The temperature-sensing medium in the second regulating chamber contracts and draws the follower cylinder 530 to move, causing the waterproof rings 330 to move in the opposite direction, reducing the volume of the clamping chamber and the negative pressure.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waterproof structure for a solid-state battery, installed in a pre-drilled wiring hole on a battery box, characterized in that: Includes connecting sleeve, waterproof sleeve, and adjustment assembly; The connecting sleeve is installed in the threading hole and is coaxial with the threading hole and fits against the inner wall of the threading hole; The waterproof sleeve is coaxially disposed inside the connecting sleeve, including a fixed ring fixed to the connecting sleeve, a movable ring sliding along the axial direction of the connecting sleeve, and multiple waterproof rings located between the fixed ring and the movable ring. The fixed ring is located at one end of the connecting sleeve closer to the inside of the battery box. A one-way structure is provided between the movable ring and the connecting sleeve to prevent the movable ring from moving towards the side closer to the fixed ring. The multiple waterproof rings are spaced apart along the axial direction of the connecting sleeve, and the two outermost waterproof rings are connected to the fixed ring and the movable ring respectively. Adjacent waterproof rings are sealed and connected by a bellows. The waterproof sleeve and the connecting sleeve define a compensation chamber that is sealed off from the outside of the battery box and communicates with the inside of the battery box; the cable passes through multiple waterproof rings, and there is a clamping chamber between two adjacent waterproof rings and the corrugated pipe and the cable. The movable ring moves away from the fixed ring to create a negative pressure in the clamping chamber, thereby causing part of the cable to deform in the clamping chamber and fit against the waterproof ring. The regulating component increases the negative pressure in the clamping chamber when the temperature rises and decreases the negative pressure in the clamping chamber when the temperature falls. The adjustment assembly includes spring plates disposed on both sides of the waterproof ring axially. The spring plates are made of shape memory metal and are located in the clamping chamber. One end of the spring plate is fixed to the waterproof ring, and the other end is suspended and connected to the waterproof ring through a corrugated ring to define a sealed first adjustment chamber between the spring plate and the waterproof ring. The first adjustment chamber is connected to the compensation chamber. The clamping chamber is defined by the spring plates on two adjacent waterproof rings, the corrugated rings connected to the spring plates, the corrugated pipe between the two waterproof rings, and the cable. When the temperature rises, the spring plates contract, compressing the adjustment chamber and increasing the volume of the clamping chamber, thereby increasing the negative pressure. Alternatively, the adjustment assembly includes a fixed cylinder, a follower cylinder, and a replenishing component; the fixed cylinder is located in the compensation chamber and fixed to the fixed ring, and the inner wall of the fixed cylinder is provided with multiple storage troughs; there are multiple follower cylinders, each of which is installed on a movable waterproof ring and is in a sealed sliding fit with a storage trough on the inner wall of the fixed cylinder, and defines a second adjustment chamber with its corresponding storage trough, the second adjustment chamber being filled with a temperature-sensitive medium that expands when the temperature rises; the replenishing component is located between the fixed cylinder and the connecting sleeve, and when the movable ring moves away from the fixed ring to the side that widens the gap between the multiple waterproof rings, thereby increasing the size of the second adjustment chamber, the replenishing component replenishes the second chamber with the temperature-sensitive medium.

2. The waterproof structure of a solid-state battery according to claim 1, characterized in that: The supplementary component includes a supplementary shell, a partition ring, and a gas storage shell. The partition ring is installed inside the supplementary shell and divides the supplementary shell into a liquid chamber and a gas chamber. The liquid chamber is used to store the temperature-sensing medium, and the gas chamber is connected to the gas storage shell. The gas storage shell is made of a deformable flexible material and is fixedly connected to the supplementary shell. The partition ring slides unidirectionally with the inner wall of the supplementary shell. The supplementary shell allows the partition ring to move towards the liquid chamber side and prevents the partition ring from moving towards the gas chamber side. The liquid chamber is connected to the second regulating chamber through a hose.

3. A waterproof structure for a solid-state battery according to any one of claims 1-2, characterized in that: The two adjacent waterproof rings are connected by a tension spring.

4. A waterproof structure for a solid-state battery according to any one of claims 1-2, characterized in that: It also includes a water-proof membrane, one side of which is connected to the movable ring and the other side is connected to the connecting sleeve, forming a ring around the connecting sleeve, so that the interior of the water-proof membrane is connected to the compensation chamber and isolated from the outside.

5. The waterproof structure of a solid-state battery according to claim 4, characterized in that: At least two drive rods are connected to the movable ring, and the at least two drive rods are symmetrically arranged about the axis of the movable ring. One end of the drive rod is connected to the movable ring, and the other end is suspended and extends into the waterproof membrane. The drive rod is provided with a retractable ratchet, and the inner wall of the connecting sleeve is provided with a ratchet rack. The ratchet and the ratchet rack mesh, and the ratchet rack allows the drive rod to move away from the fixed ring with the movable ring and prevents the movable ring from moving closer to the fixed ring. By pressing the suspended ends of the two drive rods together, the drive rods are deformed, thereby disengaging the ratchet and the ratchet rack, and the movable ring can return to its initial position.

6. The waterproof structure of a solid-state battery according to claim 1, characterized in that: An air inlet is provided on the fixing ring, which connects the inside of the battery box to the compensation chamber.

7. The waterproof structure of a solid-state battery according to claim 1, characterized in that: A lever is installed on the movable ring.

8. The waterproof structure of a solid-state battery according to claim 1, characterized in that: The waterproof ring is a rubber ring that is adapted to the cable size.

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