Modularized battery box structure of new energy automobile

Abstract

The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile modular battery box structure which comprises an outer box, the outer box is of a telescopic structure, a telescopic outer top cover is arranged at the upper end of the outer box and is detachable, tension springs are symmetrically arranged between the fixed section and the telescopic end of the outer box, a plurality of inner boxes are arranged in the outer box, and the inner boxes are arranged in the outer box. A detachable inner top cover is arranged on the outer box, a plurality of storage batteries are placed in the inner box and used for supplying power to an automobile, and a buffer shock absorber is arranged on the inner box; the buffer shock absorber comprises buffer air bags arranged on each side of the inner box, and the upper end of the inner top cover is also provided with a buffer air bag. When a vehicle encounters vibration and impact in the running process, the buffering air bags absorb the energy firstly, the buffering air bags can deform due to the flexible characteristic of the buffering air bags, so that the vibration energy is absorbed, and the combination of the inner box outer side buffering air bag and the inner top cover buffering air bag provides three-dimensional damping protection; and vibration and impact from different directions can be dealt with.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a modular battery box structure for new energy vehicles. Background Art

[0002] The battery box of new energy vehicles is one of the core components of the entire power system. It is mainly used to accommodate and protect the battery pack to ensure its safety and stability under various working conditions. The battery box is usually made of high-strength materials with good corrosion resistance, high temperature resistance and mechanical strength to cope with various challenges in vehicle operation.

[0003] The primary task of the battery box is to protect the battery pack from adverse factors such as external impact, vibration, dust, moisture, etc. It is usually designed with a sturdy shell and sealing structure to ensure the safe operation of the battery under various environmental conditions. The battery box also needs to have sufficient structural strength to withstand various mechanical stresses during vehicle operation, such as collisions, bumps, etc.

[0004] For example, a new energy vehicle battery box with publication number CN117374499A relates to the field of new energy vehicle technology. The prior art includes a base plate, a stabilizing box is fixed on the base plate, and a plurality of first shock-absorbing assemblies are fixed between the upper end surface of the base plate and the bottom end surface of the stabilizing box; an installation box is fixed inside the stabilizing box, the top of the installation box is open, and a battery pack is fixed inside the installation box; a plurality of slide grooves cooperating with the first shock-absorbing assemblies are provided on the base plate; the first shock-absorbing assembly includes two sliders, each of which is slidably connected with a slider; a plurality of second shock-absorbing assemblies cooperating with the sliders are fixed on the base plate; the second shock-absorbing assembly includes a receiving groove and a stopper; the receiving groove is provided on the base plate, and the receiving groove is located at the bottom of the slide groove; the stopper is fixed in the receiving groove, and the part of the stopper extending into the slide groove is a resistance part, the cross-section of the resistance part is arc-shaped, the stopper has a deformation part, the deformation part is located in the receiving groove, and the deformation part is made of high-elastic sponge; the service life of the stopper is improved, and the practicality of the device is improved.

[0005] However, the above-mentioned prior art still has some defects when it comes to shock absorption of automobile battery boxes: The first spring of the above-mentioned prior art absorbs and buffers the vibration energy in the horizontal direction through its own expansion and contraction deformation, thereby reducing the shaking of the installation box. The second spring absorbs and buffers the vibration energy in the vertical direction through its own expansion and contraction deformation, thereby further reducing the vibration of the installation box. However, when the car is driving on complex road conditions, the battery box may be subjected to more complex vibrations and impacts. The above-mentioned shock absorption technology may show the problem of insufficient adaptability under certain extreme conditions.

[0006] At the same time, when the slider contacts the resistance part, the slider triggers the resistance switch, and the air injection pump starts to inject air into the first airbag. The first airbag expands and fits the bottom end surface of the stabilization box to reduce the shock of the stabilization box. However, it takes a certain amount of time for the airbag to expand. There is a certain response delay from the triggering of the resistance switch to the full expansion of the airbag and the provision of a shock-absorbing effect. Under the impact of instantaneous strong vibration, the airbag may not be able to inflate in time, causing the battery box to withstand a large vibration impact in a short period of time. This delay may cause the battery pack to be subjected to unnecessary stress under strong vibration, increasing the risk of battery damage or performance degradation.

[0007] Based on this, and in accordance with the above-mentioned viewpoints, there is still room for improvement in the existing technology for shock absorbing of automotive battery boxes. Summary of the invention

[0008] In order to solve the above technical problems, the present application provides a modular battery box structure for new energy vehicles, which adopts the following technical solutions: A modular battery box structure for a new energy vehicle comprises an outer box, the outer box is configured as a telescopic structure, a retractable outer top cover is disposed at the upper end of the outer box and is detachable, and tension springs are symmetrically disposed between a fixed section and a telescopic end of the outer box; Several inner boxes are arranged in the outer box, a detachable inner top cover is arranged on the outer box, multiple batteries are placed in the inner box for powering the car, and a buffer shock absorber is arranged on the inner box; the buffer shock absorber includes a buffer airbag arranged on each side of the inner box, and a buffer airbag is also arranged on the upper end of the inner top cover.

[0009] Preferably, the buffer shock absorber further comprises a plurality of bulges constructed on the buffer airbag, and the bulges are evenly distributed in a matrix.

[0010] Preferably, a flame retardant is injected into the bulge, and the inner box and the inner top cover are provided with connection holes corresponding to the bulges one by one.

[0011] Preferably, a power-off protector is provided on the inner top cover; The power-off protector includes a positive armature and a negative armature arranged at the bottom of the inner top cover, the positive armature corresponds to the positive poles of multiple batteries, and the negative armature corresponds to the negative poles of multiple batteries. The bottom of the inner top cover is symmetrically provided with positive conductive strips and negative conductive strips, the positive conductive strip is connected to the positive armature, and the negative conductive strip is connected to the negative armature.

[0012] Preferably, one end of each of the positive conductive strip and the negative conductive strip is provided with a disconnecting piece; The disconnecting piece comprises a symmetrical and slidably arranged power-carrying block at the lower end of the inner top cover, two of the power-carrying blocks are in contact with the positive conductive strip and the negative conductive strip respectively, and one end of the power-carrying block penetrates to one side of the inner top cover.

[0013] Preferably, a T-shaped slot is provided on the power block, the T-shaped slot has a vertical slot and a horizontal slot, and a sliding rod is provided at one end of each of the positive conductive strip and the negative conductive strip, and one end of the sliding rod slides through the vertical slot of the T-shaped slot.

[0014] Preferably, the sliding rod is provided with a limiting ring located in the transverse groove.

[0015] Preferably, a cavity is structured inside the limiting ring, and the limiting ring is made of glass.

[0016] Preferably, a slot is provided between the power-carrying block and the positive conductive strip and the negative conductive strip, and a resisting spring is pressed in the slot.

[0017] Preferably, an insulating coating is coated on the inner side of the card slot.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the vehicle encounters vibration and impact during driving, the buffer airbag of the present invention first absorbs the energy. The flexible characteristics of the airbag enable it to deform, thereby absorbing the vibration energy. The combination of the inner box outer airbag and the inner top cover airbag provides three-dimensional shock-absorbing protection, which can cope with vibration and impact from different directions.

[0019] 2. The bulge of the present invention is injected with a flame retardant. The function of the flame retardant is to improve the fire resistance of the airbag. When the battery has thermal runaway or other fire risks, the flame retardant can suppress the spread of flames and reduce the risk of fire. When the battery catches fire, the flame will burn through the corresponding bulge from the connecting hole. The bulge will shrink due to the heat, and the flame retardant inside it will pass through the connecting hole into the inner box, suppressing the spread of flames and providing more escape time for passengers and vehicles.

[0020] 3. The limit ring of the present invention is made of glass and has a cavity inside, in which liquid is injected. When thermal runaway or other fire risks occur, the temperature will be transferred to the limit ring, and the liquid in the cavity of the limit ring will evaporate and expand, and the glass limit ring will break and fall off the sliding rod. At this time, the compressed resistance spring will move the power block away from the positive conductive strip and the negative conductive strip, thereby cutting off the current to protect the battery system and vehicle safety.

[0021] 4. Liquid is also injected into the heat conducting tube of the present invention, and the heat conducting tube is a metal material with higher strength than the limit ring of glass. The heat conducting tube covers the bottom of the inner top cover. When thermal runaway or other fire risks occur in any battery in the inner box, the heat conducting tube can effectively transfer heat, so that the temperature of the liquid in the heat conducting tube and the limit ring increases, and the liquid evaporates and expands. Since the limit ring is made of glass, it cannot withstand the expansion pressure of the internal liquid and will break. After the limit ring breaks, it falls off the sliding rod and releases the sliding rod.

[0022] 5. The two ends of the heat pipe of the present invention are connected to the hollow cavity of the positioning ring through the clearance hole. When the temperature of any inner box in the outer box is too high, the temperature of the liquid in the heat pipe rises and evaporates and expands. Since the positioning ring is made of glass, it cannot withstand the expansion pressure of the internal liquid and will break. After the positioning ring breaks, it falls off from the positioning rod and releases the positioning rod, so that the power terminal is out of contact with the power block, thereby cutting off the current. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a cross-sectional view of the outer box of the present invention.

[0025] Figure 3 It is a structural schematic diagram of the buffer shock absorber of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the inner box of the present invention.

[0027] Figure 5 It is a cross-sectional view of the inner box of the present invention.

[0028] Figure 6 It is a structural schematic diagram of the power-off protector of the present invention.

[0029] Figure 7 The present invention Figure 6 Enlarged view of point A in the middle.

[0030] Figure 8 It is a cross-sectional view between the limiting ring and the positioning ring of the present invention.

[0031] Fig. 9 It is a plan view of the power-off protector of the present invention.

[0032] Fig.10 The present invention Fig. 9 Enlarged view of point B in the middle.

[0033] Explanation of the accompanying drawings: 1. outer box; 11. outer top cover; 12. tension spring; 2. inner box; 21. inner top cover; 4. buffer shock absorber; 41. buffer airbag; 42. bulge; 43. connecting hole; 5. power-off protector; 51. positive armature; 52. negative armature; 53. positive conductive strip; 54. negative conductive strip; 6. disconnector; 61. power-on block; 62. T-slot; 621. vertical slot; 622. horizontal slot; 63. sliding rod; 64. limiting ring; 641. cavity; 65. slot; 651. resistance spring; 66. clearance hole; 67. heat pipe; 7. positioning hole; 71. positioning rod; 72. positioning ring; 73. hollow cavity; 74. heat pipe; 75. power terminal; 76. reset spring. DETAILED DESCRIPTION

[0034] The following is combined with Figures 1 to 10 This application is described in further detail.

[0035] The embodiment of the present application discloses a modular battery box structure for new energy vehicles. By introducing airbags and bulge structures, it provides a highly efficient shock-absorbing effect, can effectively absorb and disperse vibration energy, and significantly improves the shock-absorbing effect and safety of the battery box. At the same time, the injection of flame retardants improves the fire resistance of the airbags, providing additional safety protection for the battery system. Embodiment 1:

[0036] Reference Figure 1 and Figure 2 As shown, a modular battery box structure for new energy vehicles includes an outer box 1, a tension spring 12 is symmetrically arranged between the fixed section and the telescopic end of the outer box 1, a plurality of inner boxes 2 are arranged in the outer box 1, and a detachable inner top cover 21 is arranged on the outer box 1.

[0037] Tension springs 12 are symmetrically arranged between the fixed section and the telescopic end of the outer box 1. The tension springs 12 provide elastic support between the fixed section and the telescopic end, and can deform under the action of external force to absorb and store vibration energy.

[0038] A plurality of batteries are placed in the inner box 2 for powering the car. The outer box 1 is constructed as a telescopic structure to accommodate different numbers of inner boxes 2, so that the number of inner boxes 2 can be flexibly adjusted according to needs. A retractable outer top cover 11 is provided at the upper end of the outer box 1 and is detachable. When in use, the outer box 1 is filled with batteries and then the outer top cover 11 is closed. Then, according to needs, a suitable number of inner boxes 2 are placed in the outer box 1 and the outer top cover 11 is closed.

[0039] Reference Figure 3 and Figure 4 As shown, a buffer shock absorber 4 is arranged on the inner box 2, and the buffer shock absorber 4 can absorb and disperse vibration, protect the battery from vibration and impact, and improve the service life and safety of the battery.

[0040] Specifically, the buffer shock absorber 4 includes a buffer air bag 41 disposed on each side of the inner box 2 , and a buffer air bag 41 is also disposed on the upper end of the inner top cover 21 .

[0041] These cushioning airbags 41 can absorb and disperse vibrations and impacts from the outer box 1, protecting the battery in the inner box 2 from mechanical stress. The flexible characteristics of the cushioning airbags 41 enable them to adapt to vibrations in different directions and provide all-round shock absorption protection. The cushioning airbags 41 on the inner top cover 21 are mainly used to cushion impacts from above, such as the vertical vibrations that the vehicle may be subjected to when driving on bumpy roads. They can not only cope with lateral vibrations, but also effectively absorb vertical impacts.

[0042] Reference Figure 3, Figure 4 and Figure 5 As shown, a plurality of bulges 42 are constructed on the cushioning airbag 41, and the bulges 42 are evenly distributed in a matrix. The design of the bulges 42 increases the surface area and deformation capacity of the cushioning airbag 41, so that it can more effectively absorb and disperse vibration energy. The bulges 42 evenly distributed in the matrix can evenly disperse stress and avoid stress concentration at one point, thereby improving the shock absorption effect and durability of the cushioning airbag 41.

[0043] In addition, a flame retardant is injected into the bulge 42. The function of the flame retardant is to improve the fire resistance of the cushion airbag 41. When the battery has thermal runaway or other fire risks, the flame retardant can suppress the spread of flames and reduce the fire risk.

[0044] Connecting holes 43 corresponding to the bulges 42 are provided on the inner box 2 and the inner top cover 21. When the battery catches fire, the flame will burn through the corresponding bulges 42 from the connecting holes 43. The bulges 42 will shrink due to the heat, and the flame retardant inside will pass through the connecting holes 43 into the inner box 2, thereby suppressing the spread of flames and providing more escape time for passengers and vehicles.

[0045] At the same time, when the outer box 1 is subjected to external vibration or impact, the tension spring 12 will stretch or compress, and absorb the vibration energy through its own elastic deformation. The cooperation between the tension spring 12 and the buffer airbag 41 provides an efficient and reliable shock-absorbing effect through a multi-level and multi-mechanism shock-absorbing method. This combination can not only cope with vibrations of different types and intensities, but also can adaptively adjust according to external conditions to provide dynamic shock-absorbing protection.

[0046] In general, when the vehicle encounters vibration and impact during driving, the cushioning airbag 41 first absorbs the energy. The flexible characteristics of the cushioning airbag 41 enable it to deform, thereby absorbing the vibration energy. The combination of the cushioning airbag 41 on the outside of the inner box 2 and the cushioning airbag 41 on the inner top cover 21 provides three-dimensional shock absorbing protection, which can cope with vibrations and impacts from different directions.

[0047] The matrix uniform distribution structure of the bulge 42 further disperses the vibration energy, avoids stress concentration, and improves the shock absorption effect. The flame retardant injected into the bulge 42 will not leak or fail during the vibration process, and always maintains its fireproof performance. When the battery has thermal runaway or other fire risks, the flame retardant can suppress the spread of flames and provide more escape time for passengers and vehicles.

[0048] Reference Figure 5 , Figure 6 and Figure 7 As shown, a power-off protector 5 is provided on the inner top cover 21. When thermal runaway or other fire risks occur, the power-off protector 5 will cut off the current path to prevent safety accidents such as battery short circuit and fire.

[0049] Specifically, the power-off protector 5 includes a positive armature 51 and a negative armature 52 disposed at the bottom of the inner top cover 21 , and a positive conductive bar 53 and a negative conductive bar 54 are symmetrically disposed at the bottom of the inner top cover 21 .

[0050] When the outer top cover 11 is closed, the positive armature 51 is connected to the positive poles of multiple batteries correspondingly to the positive power supplies of multiple batteries, the positive conductive bar 53 is connected to the positive armature 51 to connect to the positive power supply, and similarly, the negative armature 52 is connected to the negative poles of multiple batteries correspondingly to the negative power supplies of multiple batteries, and the negative conductive bar 54 is connected to the negative armature 52 to connect to the negative power supply.

[0051] A disconnect 6 is provided at one end of the positive conductive bar 53 and the negative conductive bar 54. Under normal circumstances, the disconnect 6 remains in a closed state, allowing current to be conducted normally through the positive conductive bar 53 and the negative conductive bar 54. When thermal runaway or other fire risks occur, the disconnect 6 will cut off the current to protect the battery system and vehicle safety.

[0052] Specifically, the disconnect 6 includes a power-on block 61 symmetrically and slidably arranged at the lower end of the inner top cover 21. The two power-on blocks 61 are in contact with the positive conductive strip 53 and the negative conductive strip 54 respectively. The power-on block 61 in contact with the positive conductive strip 53 will conduct the positive power supply, and the power-on block 61 in contact with the negative conductive strip 54 will conduct the negative power supply. One end of the power-on block 61 penetrates to one side of the inner top cover 21 to supply power to the car.

[0053] A T-slot 62 is provided on the power block 61, and the T-slot 62 is constructed with a vertical slot 621 and a horizontal slot 622. A sliding rod 63 is provided at one end of the positive conductive strip 53 and the negative conductive strip 54, and the sliding rod 63 is made of insulating material. One end of the sliding rod 63 slides through the vertical slot 621 of the T-slot 62.

[0054] Under normal circumstances, the thread on the sliding rod 63 is equipped with a limiting ring 64 located in the horizontal groove 622. The limiting ring 64 will limit the sliding rod 63 in the vertical groove 621, so that the power block 61 contacts the corresponding positive conductive bar 53 and negative conductive bar 54, allowing current to be normally conducted through the positive conductive bar 53 and the negative conductive bar 54.

[0055] A clamping slot 65 is provided between the power-on block 61 and the positive conductive strip 53 and the negative conductive strip 54 . A resisting spring 651 is pressed into the clamping slot 65 . Under normal circumstances, the resisting spring 651 is in a compressed state.

[0056] Reference Figure 8As shown, in addition, the limit ring 64 is made of glass and has a cavity 641 inside, and liquid is injected into the cavity 641. When thermal runaway or other fire risks occur, the temperature will be transferred to the limit ring 64, and the liquid in the cavity 641 of the limit ring 64 will evaporate and expand, and the glass limit ring 64 will break and fall off the sliding rod 63. At this time, the compressed resistance spring 651 will move the power block 61 away from the positive conductive strip 53 and the negative conductive strip 54, thereby cutting off the current to protect the battery system and the vehicle safety. Embodiment 2:

[0057] Reference Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, based on the first embodiment, a clearance hole 66 is opened on the power block 61, and a heat pipe 67 is arranged at the bottom of the inner top cover 21. Both ends of the heat pipe 67 pass through the clearance hole 66 and communicate with the cavity 641 of the limiting ring 64.

[0058] Liquid is also injected into the heat pipe 67, and the heat pipe 67 is made of metal material with higher strength than the glass limit ring 64. The heat pipe 67 covers the bottom of the inner top cover 21. When any battery in the inner box 2 has thermal runaway or other fire risks, the heat pipe 67 can effectively transfer heat, so that the temperature of the liquid in the heat pipe 67 and the limit ring 64 will increase, evaporate and expand. Since the limit ring 64 is made of glass, it cannot withstand the expansion pressure of the internal liquid and will break. After the limit ring 64 breaks, it falls off from the sliding rod 63 and releases the sliding rod 63.

[0059] Among them, a positioning hole 7 is opened on the power-on block 61, and a positioning rod 71 is slidably penetrated at one end of the power-on block 61 away from the positive conductive strip 53 and the negative conductive strip 54. The positioning rod 71 is provided with a positioning ring 72 located in the clearance hole 66, and a hollow cavity 73 is constructed in the positioning ring 72, and the positioning ring 72 is made of glass.

[0060] Under normal circumstances, the positioning ring 72 will limit the movement of the positioning rod 71, so that the positioning rod 71 and the power block 61 are electrically connected, and the car is powered by the power terminal 75 set at one end of the positioning rod 71. The positioning rod 71 is provided with a return spring 76 located between the power terminal 75 and the power block 61. Generally, the return spring 76 will be in a compressed state.

[0061] Liquid is injected into the hollow cavity 73. When thermal runaway or other fire risks occur, the temperature will be transferred to the positioning ring 72, and the liquid in the positioning ring 72 will evaporate and expand, and the glass positioning ring 72 will break and fall off the sliding rod 63. At this time, the compressed return spring 76 will push the power terminal 75 to make the positioning rod 71 break away from the contact with the power block 61, thereby cutting off the current to protect the battery system and vehicle safety.

[0062] A heat pipe 74 is provided on the outside of the inner top cover 21, and liquid is also injected into the heat pipe 74. Both ends of the heat pipe 74 pass through the clearance hole 66 to communicate with the hollow cavity 73 of the positioning ring 72. When the temperature of any inner box 2 in the outer box 1 is too high, the temperature of the liquid in the heat pipe 74 rises and evaporates and expands. Since the positioning ring 72 is made of glass, it cannot withstand the expansion pressure of the internal liquid and will break. After the positioning ring 72 breaks, it falls off from the positioning rod 71 and releases the positioning rod 71, so that the power terminal 75 is out of contact with the power block 61, thereby cutting off the current.

[0063] The implementation principle of the present invention is: (1): A cushioning airbag 41 is provided on each side of the inner box 2, and a cushioning airbag 41 is also provided on the upper end of the inner top cover 21. A plurality of bulges 42 are constructed on the cushioning airbag 41, and the bulges 42 are evenly distributed in a matrix. When the vehicle encounters vibration and impact during driving, the cushioning airbag 41 first absorbs the energy. The flexible characteristics of the cushioning airbag 41 enable it to deform, thereby absorbing the vibration energy. The combination of the cushioning airbag 41 on the outer side of the inner box 2 and the cushioning airbag 41 on the inner top cover 21 provides three-dimensional shock-absorbing protection, which can cope with vibration and impact from different directions.

[0064] (2): A flame retardant is injected into the bulge 42. The function of the flame retardant is to improve the fire resistance of the cushion airbag 41. When the battery has thermal runaway or other fire risks, the flame retardant can inhibit the spread of flames and reduce the fire risk.

[0065] (3): Connecting holes 43 corresponding to the bulges 42 are provided on the inner box 2 and the inner top cover 21. When the battery catches fire, the flame will burn through the corresponding bulges 42 from the connecting holes 43. The bulges 42 will shrink due to the heat, and the flame retardant inside will pass through the connecting holes 43 into the inner box 2, thereby suppressing the spread of flames and providing more escape time for passengers and the vehicle.

[0066] (4): Under normal circumstances, the thread on the sliding rod 63 is matched with a limiting ring 64 located in the horizontal groove 622. The limiting ring 64 will limit the sliding rod 63 in the vertical groove 621, so that the power block 61 contacts the corresponding positive conductive strip 53 and negative conductive strip 54, allowing the current to be normally conducted through the positive conductive strip 53 and the negative conductive strip 54.

[0067] (5): The limit ring 64 is made of glass and has a cavity 641 inside. Liquid is injected into the cavity 641. When thermal runaway or other fire risks occur, the temperature will be transferred to the limit ring 64, and the liquid in the cavity 641 of the limit ring 64 will evaporate and expand. The glass limit ring 64 will break and fall off the sliding rod 63. At this time, the compressed resistance spring 651 will move the power block 61 away from the positive conductive strip 53 and the negative conductive strip 54, thereby cutting off the current to protect the battery system and vehicle safety.

[0068] (6): Liquid is also injected into the heat pipe 67, and the heat pipe 67 is a metal material with higher strength than the limit ring 64 of glass. The heat pipe 67 covers the bottom of the inner top cover 21. When any battery in the inner box 2 has thermal runaway or other fire risks, the heat pipe 67 can effectively transfer heat, so that the temperature of the liquid in the heat pipe 67 and the limit ring 64 rises and evaporates and expands. Since the limit ring 64 is made of glass, it cannot withstand the expansion pressure of the internal liquid and will break. After the limit ring 64 breaks, it falls off from the sliding rod 63 and releases the sliding rod 63.

[0069] (7): Under normal circumstances, the positioning ring 72 will limit the movement of the positioning rod 71, so that the positioning rod 71 and the power block 61 are electrically connected, and the vehicle is powered by the power terminal 75 set at one end of the positioning rod 71. The positioning rod 71 is provided with a return spring 76 located between the power terminal 75 and the power block 61. Generally, the return spring 76 is in a compressed state.

[0070] (8): Liquid is injected into the hollow cavity 73. When thermal runaway or other fire risks occur, the temperature will be transferred to the positioning ring 72, and the liquid in the positioning ring 72 will evaporate and expand. The glass positioning ring 72 will break and fall off the sliding rod 63. At this time, the compressed return spring 76 will push the power terminal 75 to make the positioning rod 71 break away from the contact with the power block 61, thereby cutting off the current to protect the battery system and vehicle safety.

[0071] (9): A heat pipe 74 is provided on the outside of the inner top cover 21. Liquid is also injected into the heat pipe 74. Both ends of the heat pipe 74 pass through the clearance hole 66 and communicate with the hollow cavity 73 of the positioning ring 72. When the temperature of any inner box 2 in the outer box 1 is too high, the temperature of the liquid in the heat pipe 74 rises and evaporates and expands. Since the positioning ring 72 is made of glass, it cannot withstand the expansion pressure of the internal liquid and will break. After the positioning ring 72 breaks, it falls off from the positioning rod 71 and releases the positioning rod 71.

[0072] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular battery box structure for a new energy vehicle, comprising an outer box (1), characterized in that: The outer box (1) is constructed as a telescopic structure, a retractable outer top cover (11) is provided at the upper end of the outer box (1) and is detachable, and tension springs (12) are symmetrically provided between the fixed section and the telescopic end of the outer box (1); A plurality of inner boxes (2) are arranged in the outer box (1); a detachable inner top cover (21) is arranged on the outer box (1); a plurality of batteries are placed in the inner box (2) for supplying power to the vehicle; a buffer shock absorber (4) is arranged on the inner box (2); the buffer shock absorber (4) comprises a buffer air bag (41) arranged on each side of the inner box (2); and a buffer air bag (41) is also arranged on the upper end of the inner top cover (21).

2. A modular battery box structure for new energy vehicles according to claim 1, characterized in that: The buffer shock absorber (4) further comprises a plurality of bulges (42) constructed on the buffer airbag (41), and the bulges (42) are evenly distributed in a matrix.

3. A modular battery box structure for new energy vehicles according to claim 2, characterized in that: A flame retardant is injected into the bulge (42), and connection holes (43) corresponding one to one with the bulge (42) are provided on the inner box (2) and the inner top cover (21).

4. A modular battery box structure for new energy vehicles according to claim 1, characterized in that: The inner top cover (21) is provided with a power-off protector (5); The power-off protector (5) comprises a positive armature (51) and a negative armature (52) arranged at the bottom of the inner top cover (21), the positive armature (51) corresponding to the positive poles of a plurality of storage batteries, the negative armature (52) corresponding to the negative poles of a plurality of storage batteries, and a positive conductive bar (53) and a negative conductive bar (54) symmetrically arranged at the bottom of the inner top cover (21), the positive conductive bar (53) connected to the positive armature (51), and the negative conductive bar (54) connected to the negative armature (52).

5. A modular battery box structure for new energy vehicles according to claim 4, characterized in that: One end of each of the positive conductive strip (53) and the negative conductive strip (54) is provided with a disconnecting piece (6); The disconnecting member (6) comprises a power-carrying block (61) symmetrically and slidably arranged at the lower end of the inner top cover (21), the two power-carrying blocks (61) respectively contacting the positive conductive strip (53) and the negative conductive strip (54), and one end of the power-carrying block (61) penetrates to one side of the inner top cover (21).

6. A modular battery box structure for new energy vehicles according to claim 5, characterized in that: The power supply block (61) is provided with a T-shaped slot (62), the T-shaped slot (62) being structured with a vertical slot (621) and a horizontal slot (622), one end of each of the positive conductive strip (53) and the negative conductive strip (54) being provided with a sliding rod (63), one end of the sliding rod (63) slidingly passing through the vertical slot (621) of the T-shaped slot (62).

7. A modular battery box structure for new energy vehicles according to claim 6, characterized in that: The sliding rod (63) is provided with a limiting ring (64) located in the transverse groove (622).

8. A modular battery box structure for new energy vehicles according to claim 7, characterized in that: A cavity (641) is configured inside the limiting ring (64), and the limiting ring (64) is made of glass.

9. A modular battery box structure for new energy vehicles according to claim 8, characterized in that: A clamping groove (65) is provided between the power-on block (61) and the positive conductive strip (53) and the negative conductive strip (54), and a resisting spring (651) is pressed into the clamping groove (65).

10. A modular battery box structure for new energy vehicles according to claim 9, characterized in that: The inner side of the card slot (65) is coated with an insulating coating.

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