Vehicle sodium ion battery with protection structure

Abstract

The present invention relates to the technical field of battery installation, and discloses a vehicle sodium ion battery with a protection structure, the vehicle sodium ion battery comprises a battery base, a sealing top plate for sealing the battery base is arranged above the battery base, and a plurality of installation grooves for installing a battery body are formed in the battery base. And a storage groove for placing the positioning assembly is formed between the adjacent mounting grooves. According to the scheme, the spray head arranged on the rotating shaft rod is used for spraying in a reciprocating manner, so that a mild cooling surface is formed on the contact surface of the battery body, and the contact surface of the battery body covered by the sprayed cooling liquid can take away initial heat more uniformly and gently due to relatively low flow speed of the sprayed cooling liquid; the surface temperature of the battery body is stably transited to a relatively low level, and then the battery body is subjected to water-cooling heat dissipation with higher fluidity, so that the risk of thermal shock caused by direct flowing water-cooling heat dissipation in the prior art is also greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of battery installation technology, specifically to a sodium-ion battery for vehicles with a protective structure. Background Technology

[0002] Sodium-ion batteries are secondary batteries that rely on the movement of sodium ions between the positive and negative electrodes to complete the charging and discharging process. Their working principle is similar to that of the widely used lithium-ion batteries, and sodium-ion batteries are also widely used in the automotive industry.

[0003] Existing automotive sodium-ion batteries typically achieve heat dissipation through methods such as cooling fans or water cooling. While these methods do not affect the heat dissipation effect of sodium-ion batteries, adding a cooling fan increases the storage capacity inside the battery box. Water cooling, although efficient at removing heat, can cause a rapid drop in temperature at the sodium-ion battery contact surfaces if the coolant flow rate is too fast or improperly controlled. This large temperature difference formed in a short period can easily generate thermal stress within the battery materials, potentially leading to surface material aging, microcrack formation, and even increasing the potential risk of internal short circuits.

[0004] Therefore, to address the shortcomings of existing requirements, we propose a sodium-ion battery with a protective structure for automotive applications. Summary of the Invention

[0005] This invention provides a sodium-ion battery for vehicles with a protective structure. This solution uses a nozzle mounted on a rotating shaft to spray the battery body on a reciprocating basis, thereby creating a gentle cooling surface on the battery body's contact surface. Furthermore, because the sprayed coolant has a relatively low flow rate, the surface of the battery body covered by it can more evenly and smoothly remove the initial heat, allowing the battery body's surface temperature to smoothly transition to a relatively low level before receiving more fluid water cooling. This also greatly reduces the risk of thermal shock caused by direct water cooling in the prior art, solving the problems mentioned in the background art.

[0006] The present invention provides the following technical solution: a sodium-ion battery for vehicles with a protective structure, including a battery base, a sealing top plate for sealing the battery base is provided on the top of the battery base, and a plurality of mounting slots for mounting the battery body are provided inside the battery base, and a storage slot for placing positioning components is provided between adjacent mounting slots, the storage slots are also provided inside the battery base. The battery base also has a second liquid storage chamber and a third liquid storage chamber. A pre-cooling component for pre-cooling the contact surface of the battery body is provided between the second liquid storage chamber and the third liquid storage chamber. The precooling assembly consists of a rotating shaft, a rotating gear, a connecting rack, a movable push plate, and a nozzle mounted on the rotating shaft.

[0007] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, wherein: a third spring is provided between the movable push plate and the second liquid storage chamber; the connecting rack is fixedly installed on one side surface of the movable push plate, and connecting teeth are provided at equal intervals on the connecting rack; and the rotating shaft is rotatably installed at the connection between the second liquid storage chamber and the third liquid storage chamber.

[0008] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, a connecting torsion spring for resetting is provided between the rotating shaft and the battery base, and a connecting rack is also fixedly installed on the rotating shaft, the connecting rack engaging with a set of connecting teeth on the movable push plate.

[0009] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, the movable push plate is further provided with several connecting hoses, one end of the connecting hoses being connected to a second liquid storage chamber on one side of the movable push plate, and the other end of the connecting hoses being connected to a rotating shaft.

[0010] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, each of the storage slots has a first connection slot at its top, and a compression sleeve is installed on the bottom surface of the sealing top plate corresponding to the position of the first connection slot. A first liquid storage chamber is also provided inside the sealing top plate. One end of the compression sleeve is connected to the first liquid storage chamber, and the other end of the compression sleeve is connected to a connecting tube. The connecting tube is fixedly installed on the bottom surface of the compression sleeve.

[0011] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, the positioning assembly consists of a lower pressure plate, a connecting plate, and an elastic positioning plate. The lower pressure plate is slidably installed inside the storage slot. A first spring is also provided between the lower pressure plate and the storage slot. Elastic positioning plates are fixedly installed on the inner walls of both sides of the storage slot. One end of the connecting plate is also inclinedly hinged to the lower pressure plate. A hollow cavity is opened inside the lower pressure plate.

[0012] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, wherein: the other end of the connecting plate is hinged to the elastic positioning plate, the lower pressure plate is further provided with a limiting member for limiting the connecting plate, the elastic positioning plate is provided with a flow groove, the battery base is provided with a second connecting slot at the position corresponding to the flow groove, and a connecting plug is installed on the bottom surface of the battery base at the position corresponding to the second connecting slot.

[0013] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, wherein: a first sealing element is slidably disposed inside the connecting tube, and a second spring is disposed between the first sealing element and the connecting tube.

[0014] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, a first connecting rod is also installed inside the lower pressure plate at the position corresponding to the first seal, and a second connecting rod is fixedly installed at the bottom of the battery body.

[0015] As an alternative solution for a vehicle-mounted sodium-ion battery with a protective structure according to the present invention, wherein: a connecting groove is provided on the bottom surface of the storage compartment, a second sealing member is provided below the connecting groove, and a connecting spring for resetting is provided between the second sealing member and the bottom of the storage compartment.

[0016] The present invention has the following beneficial effects: 1. The sodium-ion battery used in this vehicle has a protective structure. By setting a positioning clamping structure inside the storage compartment, it can not only achieve precise positioning of the battery body, but also avoid the damage to the battery surface caused by the rigid contact of the existing positioning structure to a certain extent. In addition, the deformation capability of the elastic positioning plate can also effectively absorb the impact energy during the operation or transportation of the battery base, significantly improving the stability of the battery body in the vibration environment.

[0017] 2. The sodium-ion battery with protective structure used in this vehicle, by setting a pre-cooling structure inside the third liquid storage chamber, can not only effectively achieve the spraying effect on the bottom of the mounting slot, thus achieving the pre-cooling effect on the contact surface of the battery body, but also, compared with the direct flow of water cooling in the prior art, this solution uses nozzles set on the rotating shaft to spray back and forth, thereby forming a gentle cooling surface on the contact surface of the battery body. Moreover, because the sprayed coolant has a relatively low flow rate, the contact surface of the battery body covered can also more evenly and smoothly remove the initial heat, so that the surface temperature of the battery body can smoothly transition to a relatively low level before receiving more fluid water cooling. This also greatly reduces the risk of thermal shock caused by the direct flow of water cooling in the prior art. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the battery base of the present invention; Figure 3 This is a bottom view of the sealing top plate structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the battery base and the sealing top plate of the present invention.

[0019] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the precooling component structure of the present invention; Figure 8 For the present invention Figure 5 Enlarged structural diagram at point C.

[0020] In the picture: 1. Battery holder; 101. Sealed top plate; 102. Storage slot; 103. Battery body; 104. Lower pressure plate; 105. Elastic positioning plate; 106. Limiting component; 107. Extrusion sleeve; 108. Mounting slot; 109. First connecting slot; 110. Connecting plate; 111. First liquid storage chamber; 112. Second liquid storage chamber; 113. Second connecting slot; 114. Second connecting rod; 115. Second sealing component; 116. First spring; 117. Flow channel; 118. First connecting rod; 119. Connecting tube; 120. First sealing component; 121. Second spring; 122. Connecting hose; 123. Connecting insert; 124. Rotating shaft; 125. Rotating gear; 126. Connecting rack; 127. Moving push plate; 128. Third liquid storage chamber; 129. Connecting torsion spring; 130. Third spring. Detailed Implementation

[0021] 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.

[0022] Example 1, please refer to Figures 1-8 During the installation of the battery body 103, the user can use the battery base 1 to install the battery body 103. The battery base 1 has a storage slot 102 and an installation slot 108. There is a storage slot 102 between adjacent installation slots 108. The battery body 103 is installed in the corresponding installation slot 108. After the battery body 103 is installed, the user can use the sealing top plate 101 to complete the matching installation with the battery base 1, thereby achieving a sealing effect. It should be noted that the sealing method of the sealing top plate 101 for installing and sealing the battery base 1 is a commonly used and existing technology in the art. The user can adjust the installation method according to the actual situation and their own needs, which will not be elaborated here.

[0023] Meanwhile, in order to achieve stable positioning of the battery body 103, a compression sleeve 107 is fixedly provided at the bottom of the sealing top plate 101. A first connecting slot 109 is provided at the top of each storage slot 102 corresponding to the position of the compression sleeve 107. When the sealing top plate 101 is closed, the compression sleeve 107 can be inserted into the corresponding first connecting slot 109. Since a lower pressure plate 104 is slidably installed inside the storage slot 102, and a first spring 116 is provided between the lower pressure plate 104 and the storage slot 102, and the two sides of the lower pressure plate 104 are respectively hinged to the elastic positioning plate 105 through the hinged connecting plate 110. It should be noted that the elastic positioning plate 105 is made of elastic material and is initially fixed to the inner wall of the storage slot 102 in an inclined position.

[0024] During the closing process, the compression sleeve 107 will continue to press down and drive the pressure plate 104 to move down along the storage groove 102. After the pressure plate 104 moves down, the inclined connecting plate 110 will be forced to rotate around the hinge point under the action of the pressure plate 104. After the connecting plate 110 rotates, it will apply radial extrusion force to the elastic positioning plates 105 set on both sides of the storage groove 102, thereby causing the elastic positioning plates 105 to produce corresponding elastic deformation. When the sealing top plate 101 is completely closed, the connecting plate 110 just reaches the horizontal state. At this time, the deformation of the elastic positioning plate 105 reaches the maximum value. Through this setting, the elastic positioning plate 105 can complete the radial clamping effect of the battery body 103 in the mounting grooves 108 on both sides.

[0025] It should be noted that since a limiting member 106 is also provided inside the storage slot 102, and the limiting member 106 is located below the connecting plate 110, when the connecting plate 110 is rotated to a horizontal state, the connecting plate 110 will be limited and blocked by the limiting member 106, so that the connecting plate 110 can be stably kept in a horizontal state, thereby making the compression of the elastic positioning plate 105 by the connecting plate 110 more stable, so that the elastic positioning plate 105 can better complete the compression and positioning effect on the battery body 103.

[0026] Through the above settings, precise positioning of the battery body 103 can be achieved, and the technical defects of existing rigid positioning structures that are prone to damaging the battery surface can be avoided to a certain extent. This allows the battery body 103 to obtain adaptive adjustment space during the expansion process of charging and discharging, thereby avoiding direct contact between the battery body 103 and hard materials, which could lead to indentations or coating damage on the surface of the battery body 103. In addition, the deformation capability of the elastic positioning plate 105 can also effectively absorb the impact energy during the operation or transportation of the battery base 1, thereby effectively improving the stability of the battery body 103 in a vibration environment.

[0027] Example 2 aims to improve the heat dissipation problem of the battery body 103. This example is an improvement on Example 1. For details, please refer to Example 1. Figures 1-8 To improve the heat dissipation of the battery body 103, this solution provides a first liquid storage chamber 111 inside the sealing top plate 101 and a second liquid storage chamber 112 inside the battery base 1. Since the extrusion sleeve 107 is fixedly connected to the bottom surface of the sealing top plate 101, one end of it is connected to the first liquid storage chamber 111 and the other end is connected to the connecting tube 119 fixed below it. A first sealing element 120 is provided at the outlet of the connecting tube 119. The first sealing element 120 is held in the sealing position by the second spring 121, and a first connecting rod 118 is provided inside the lower pressure plate 104.

[0028] In other words, when the connecting plate 110 drives the extrusion sleeve 107 to move downward through the first connecting slot 109 and contact the lower pressure plate 104, the connecting tube 119 will also be inserted into the cavity of the lower pressure plate 104. As the extrusion sleeve 107 continues to move downward, the first connecting rod 118 inside the lower pressure plate 104 gradually contacts and finally presses against the first seal 120, thereby allowing the first seal 120 to overcome the elastic force of the second spring 121, so that the first seal 120 is disengaged from the outlet of the connecting tube 119 and the seal is released. At this time, the coolant pre-stored in the first liquid storage chamber 111, the extrusion sleeve 107 and the connecting tube 119 can flow into the interior of the lower pressure plate 104 and gradually drain into the storage slot 102 below it.

[0029] At the same time, the second connecting rod 114, which is fixed below the lower pressure plate 104, also moves downwards. Since the connection between the bottom of the storage slot 102 and the second liquid storage chamber 112 is sealed by the second seal 115 and the connecting spring (not shown in the figure), it should be noted that the second connecting rod 114 only contacts the second seal 115 after the first connecting rod 118 completes the lifting of the first seal 120 and releases the coolant. This setting allows a certain amount of coolant to be stored and compressed in the storage slot 102 below the lower pressure plate 104 as it continues to move downwards. This setting is also to allow this part of the coolant to quickly enter the second liquid storage chamber 112 after the second seal 115 is opened, thus preparing for the subsequent driving of the precooling component. When the connecting plate 110 reaches the horizontal state, the second connecting rod 114 just fully squeezes the second seal 115, thereby allowing the second seal 115 to release the seal on the bottom of the storage slot 102. At this time, the compressed coolant rushes into the second liquid storage chamber 112 under pressure.

[0030] Because a movable push plate 127 is provided in the second liquid storage chamber 112, the push plate 127 is elastically connected to the inner wall of the second liquid storage chamber 112 through a third spring 130. A connecting rack 126 is also fixed on the push plate 127. Several connecting holes are provided on the push plate 127, and each connecting hole is connected to a rotating shaft 124 located in the third liquid storage chamber 128 through a connecting hose 122. The rotating shaft 124 is rotatably set in the third liquid storage chamber 128. A rotating gear 125 is also provided at the bottom of the rotating shaft 124, and the rotating shaft 124 is connected to the third liquid storage chamber 128 through a connecting torsion spring 129. The moving gear 125 also meshes with the teeth on the connecting rack 126. It should be noted that the teeth on the connecting rack 126 are distributed at equal intervals, and there are toothless areas on the connecting rack 126. At the same time, a nozzle is provided on the rotating shaft 124, and a rotary sealing structure is provided between the rotating shaft 124 and the third liquid storage chamber 128. It should be noted that the rotary sealing structure is a commonly used and existing technology in the art. Users can adjust it according to actual conditions and their own needs, which will not be elaborated here. That is to say, this setting can ensure to a certain extent that the coolant will not leak into the chamber where the connecting rack 126 is located, thereby causing unnecessary impact.

[0031] When the coolant rushes into the second reservoir 112, on the one hand, the main part of the coolant will impact the movable push plate 127, which will then move the movable push plate 127 against the elastic force of the third spring 130. The movement of the movable push plate 127 will also drive the connecting rack 126 to move. After the connecting rack 126 moves, it can drive the rotating gear 125 to rotate through its teeth, which in turn drives the rotating shaft 124 to rotate. On the other hand, some coolant will be transported to the inside of the rotating shaft 124 through the connecting hole on the movable push plate 127 and the connecting hose 122, and finally sprayed out from the nozzle on it, thereby completing the pre-cooling effect on the bottom of the mounting slot 108. It should be noted that the bottom of the mounting slot 108 is made of thermally conductive metal material, and this setting is also conducive to the subsequent heat dissipation generated by the battery body 103.

[0032] Since the rotation of the rotating shaft 124 drives the nozzle to rotate synchronously, the rotating shaft 124 effectively expands the spray coverage of the nozzle, allowing the coolant to more evenly cover most of the bottom area of ​​the mounting groove 108. In addition, since the teeth of the connecting rack 126 are intermittently set, when a set of teeth drives the rotating gear 125 to rotate and disengage, the reset force of the connecting torsion spring 129 will drive the rotating shaft 124 to rotate in the opposite direction to reset. When the teeth engage again, the rotating shaft 124 will be driven to rotate again. This reciprocating motion causes the nozzle to continuously change the spray direction, further improving the uniformity and range of the spray coverage. The coolant sprayed into the third liquid storage chamber 128 will temporarily accumulate inside the third liquid storage chamber 128. When a large amount of coolant enters the third liquid storage chamber 128 later, this part of the coolant will flow synchronously with the large amount of coolant to provide corresponding water cooling for the battery body 103.

[0033] The aforementioned spraying achieves a pre-cooling effect on the bottom of the mounting slot 108. Compared to the existing technology of direct flowing water cooling, where the rapidly flowing coolant can cause a sharp drop in the temperature of the battery body 103 contact surface, this relatively large temperature difference may lead to aging of the battery body 103 material, microcracks, or even an increased risk of internal short circuits, significantly shortening the lifespan of the battery body 103. However, the reciprocating spraying provides a gentle pre-cooling for the contact surface of the battery body 103. Because the sprayed coolant has a relatively low flow rate, it can more evenly and gently remove the initial heat from the contact surface of the battery body 103, allowing the surface temperature of the battery body 103 to smoothly transition to a relatively low level before receiving more fluid water cooling. This also greatly reduces the risk of thermal shock.

[0034] Example 3 aims to further improve the heat dissipation effect of the battery body 103. This example is an improvement on Example 2. For details, please refer to Example 2. Figures 1-8When the sealing top plate 101 and the battery base 1 are sealed and assembled, and the battery base 1 is in working condition, the user can continuously inject coolant into the first liquid storage chamber 111 through the external interface. Since the internal passage of the battery base 1 is now open, the coolant will flow sequentially through the extrusion sleeve 107, the lower pressure plate 104, and the second liquid storage chamber 112, and finally be injected into the third liquid storage chamber 128 below each mounting slot 108 through the nozzle on the rotating shaft 124. At the same time, since there are several third liquid storage chambers 128, and these third liquid storage chambers 128 are interconnected, and a small suction water pump connected to the outside is installed in the rightmost third liquid storage chamber 128 (not shown in the figure, and the small suction water pump is existing technology, so it will not be described in detail), the above settings can form a closed-loop cooling circuit. When the battery body 103 is in working condition, its bottom The contact surface has formed a stable thermal buffer layer due to the pre-cooling effect of the spray. In other words, this pre-cooling treatment allows the contact surface to efficiently absorb heat in the early stage of battery body 103 operation, ensuring that battery body 103 does not generate a drastic temperature rise in the initial operation stage. In this state, when the continuously circulating coolant flows through the contact surface area of ​​battery body 103, it not only allows the contact surface of battery body 103, which has been pre-cooled by spray, to form a relatively stable low temperature area, so that the coolant can quickly absorb the heat continuously generated by battery body 103 during operation, but also forms a corresponding directional scouring when the high-speed flowing coolant comes into contact with the contact surface, so that the newly injected low temperature coolant can continuously replace the coolant that has absorbed heat, thereby achieving stable and continuous heat dissipation. Through this setting, this design not only significantly improves the heat dissipation efficiency per unit time, but also ensures the thermal stability of the battery by avoiding local thermal shock.

[0035] To further improve the heat dissipation effect of the battery body 103, this solution also provides a flow groove 117 in the elastic positioning plate 105. The upper end of the flow groove 117 is connected to the second connecting slot 113, and the second connecting slot 113 is connected to the connecting block 123 at the bottom of the sealing top plate 101, thereby completing the connection with the first liquid storage chamber 111. A conventional one-way valve is provided between the flow groove 117 and the second connecting slot 113. The lower end of the flow groove 117 is connected to the storage slot 102 and is equipped with an electronically controlled one-way valve. It should be noted that both ordinary liquid one-way valves and electronically controlled one-way valves are commonly used and existing technologies in the art. Users can adjust them according to actual conditions and their own needs, which will not be elaborated here. When the user opens the electronically controlled one-way valve, some of the coolant flowing through the storage tank 102 will be diverted into the flow tank 117, and rise along the flow tank 117 to the connecting plug 123 before flowing back to the first storage chamber 111, forming a secondary circulation effect. This arrangement allows the flowing coolant to indirectly contact the side area of ​​the battery body 103, thereby further enhancing the heat dissipation effect on the battery body 103.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A sodium-ion battery for vehicles with a protective structure, comprising a battery base (1), characterized in that: A sealing top plate (101) for sealing the battery base (1) is provided above the battery base (1). Several mounting slots (108) for installing the battery body (103) are provided inside the battery base (1). A storage slot (102) for placing positioning components is provided between adjacent mounting slots (108). The storage slot (102) is also provided inside the battery base (1). The battery base (1) is also provided with a second liquid storage chamber (112) and a third liquid storage chamber (128). A pre-cooling component for pre-cooling the contact surface of the battery body (103) is provided between the second liquid storage chamber (112) and the third liquid storage chamber (128). The precooling assembly consists of a rotating shaft (124), a rotating gear (125), a connecting rack (126), a movable push plate (127), and a nozzle mounted on the rotating shaft (124).

2. A sodium-ion battery for vehicles with a protective structure according to claim 1, characterized in that: A third spring (130) is provided between the movable push plate (127) and the second liquid storage chamber (112). The connecting rack (126) is fixedly installed on one side surface of the movable push plate (127), and connecting teeth are provided at equal intervals on the connecting rack (126). The rotating shaft (124) is rotatably installed at the connection between the second liquid storage chamber (112) and the third liquid storage chamber (128).

3. A sodium-ion battery for vehicles with a protective structure according to claim 2, characterized in that: A torsion spring (129) for resetting is provided between the rotating shaft (124) and the battery base (1). A connecting rack (126) is also fixedly installed on the rotating shaft (124). The connecting rack (126) meshes with a set of connecting teeth on the movable push plate (127).

4. A sodium-ion battery for vehicles with a protective structure according to claim 3, characterized in that: The movable push plate (127) is also provided with several connecting hoses (122). One end of the connecting hose (122) is connected to the second liquid storage chamber (112) on one side of the movable push plate (127), and the other end of the connecting hose (122) is connected to the rotating shaft (124).

5. A sodium-ion battery for vehicles with a protective structure according to claim 1, characterized in that: Each of the storage slots (102) has a first connecting slot (109) at its top. A compression sleeve (107) is also installed on the bottom surface of the sealing top plate (101) at the position corresponding to the first connecting slot (109). A first liquid storage chamber (111) is also provided inside the sealing top plate (101). One end of the compression sleeve (107) is connected to the first liquid storage chamber (111), and the other end of the compression sleeve (107) is connected to the connecting tube (119). The connecting tube (119) is fixedly installed on the bottom surface of the compression sleeve (107).

6. A sodium-ion battery for vehicles with a protective structure according to claim 1, characterized in that: The positioning component consists of a lower pressure plate (104), a connecting plate (110), and an elastic positioning plate (105). The lower pressure plate (104) is slidably installed inside the storage slot (102). A first spring (116) is also provided between the lower pressure plate (104) and the storage slot (102). The elastic positioning plate (105) is fixedly installed on the inner walls of both sides of the storage slot (102). One end of the connecting plate (110) is also inclinedly hinged to the lower pressure plate (104). A hollow cavity is opened inside the lower pressure plate (104).

7. A sodium-ion battery for vehicles with a protective structure according to claim 6, characterized in that: The other end of the connecting plate (110) is hinged to the elastic positioning plate (105). The lower pressure plate (104) is also provided with a limiting member (106) for limiting the connecting plate (110). The elastic positioning plate (105) is provided with a flow groove (117). The battery base (1) is provided with a second connecting slot (113) at the position corresponding to the flow groove (117). The bottom surface of the battery base (1) is also provided with a connecting plug (123) at the position corresponding to the second connecting slot (113).

8. A sodium-ion battery for vehicles with a protective structure according to claim 5, characterized in that: The connecting tube (119) is slidably provided with a first sealing element (120), and a second spring (121) is provided between the first sealing element (120) and the connecting tube (119).

9. A sodium-ion battery for vehicles with a protective structure according to claim 6, characterized in that: The lower pressure plate (104) is also equipped with a first connecting rod (118) at the position corresponding to the first seal (120), and a second connecting rod (114) is fixedly installed at the bottom of the battery body (103).

10. A sodium-ion battery for vehicles with a protective structure according to claim 9, characterized in that: The bottom surface of the storage slot (102) is provided with a connecting slot, and a second sealing member (115) is provided below the connecting slot. A connecting spring for resetting is provided between the second sealing member (115) and the bottom of the storage slot (102).

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