Integrated battery pack structure equipped with fission device

Abstract

The invention relates to the technical field of battery packs, and discloses an integrated battery pack structure equipped with fission devices, the integrated battery pack structure comprises a shell, a plurality of battery modules are mounted in the shell, a plurality of electric push rods are symmetrically mounted on the inner wall of the shell, and a stretching plate is mounted at the output end of each electric push rod; a deformation plate is fixedly connected between every two stretching plates, a notch is formed in the surface of each deformation plate, a supporting piece is installed in each notch, an external temperature measuring module is installed in the shell, the external temperature measuring module is electrically connected with the control end of the electric push rod, and when the temperature of the battery module rises, the supporting keys are driven by deformation of the notches of the deformation plates to measure the temperature of the battery module. The groove opening moves from the initial point contact position to the center of the groove opening, so that a space is released for thermal expansion of the battery module, the risk that internal pressure of the battery module is too large due to space limitation is effectively avoided, internal structure damage such as diaphragm breakage of the battery module is prevented, and the possibility of occurrence of safety accidents such as short circuit, fire and explosion is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, and specifically to an integrated battery pack structure equipped with a fission device. Background Art

[0002] The integrated battery pack structure equipped with a fission device is an efficient and compact energy storage solution that integrates advanced battery technology and an intelligent management system. By optimizing the internal layout and material selection, it achieves high energy density and long life, and is suitable for various scenarios requiring stable power supply.

[0003] However, there are still some problems with the existing integrated battery packs: Firstly, although the fission device has significantly improved the overall performance of the battery pack, the large amount of heat released during its operation has become a thorny problem. Due to the continuous generation of high heat during the fission reaction, the internal temperature of the battery pack rises sharply. The excessively high temperature has a significant impact on the battery performance. First of all, the storage capacity of the battery will decrease as the temperature rises. The chemical reaction rate inside the battery accelerates, resulting in irreversible capacity loss and greatly shortening the service life of the battery.

[0004] At the same time, the battery is extremely prone to expansion at high temperatures. The existing technology generally uses rigid brackets to fix the battery and stacks the battery packs tightly together. This design leaves almost no thermal deformation space when facing the thermal expansion of the battery. When the battery expands, due to the restriction of the rigid bracket and adjacent batteries, it cannot stretch freely, and extremely large stress will be generated inside. This stress will further damage the internal structure of the battery, such as causing the battery diaphragm to rupture, making the positive and negative electrodes come into direct contact, triggering a short circuit, and in severe cases, it may even cause safety accidents such as battery fire and explosion. Moreover, due to the tight stacking of the battery packs, the heat dissipation channels are severely blocked, and the heat is difficult to dissipate, forming a vicious cycle, which makes the overall temperature of the battery pack continue to rise, further exacerbating the deterioration of the battery performance and the increase in safety risks.

[0005] Secondly, as the battery continuously releases heat, the temperature of the entire system rises continuously. The change in temperature will cause thermal expansion and contraction of the battery and bracket materials. There are differences in the expansion coefficients of the components inside the battery pack, which causes additional stress on the bracket and the stacked batteries. Especially in the vertical direction, due to the superposition of the gravity of the battery pack and the upward extrusion force generated by thermal expansion, the vertical pressure borne by the bracket and the battery continues to intensify.

[0006] Under such a high-pressure state for a long time, stress will concentrate at the contact part between the bracket and the battery and at the stacking position between the batteries. Stress concentration will cause the actual stress of the local material to far exceed the average stress. When it exceeds the yield strength of the material, it will cause the material to undergo plastic deformation. For the bracket, bending, deformation or even fracture may occur. Once the bracket is damaged, it will not be able to effectively support and fix the battery, and the structural stability of the battery pack will be seriously affected.

[0007] To this end, the present invention proposes an integrated battery pack structure equipped with a fission device. Summary of the Invention

[0008] The purpose of the present invention is to provide an integrated battery pack structure equipped with a fission device to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: An integrated battery pack structure equipped with a fission device, including a housing. A plurality of battery modules are installed inside the housing. A plurality of electric push rods are symmetrically installed on the inner wall of the housing. The output end of each electric push rod is installed with a stretching plate. A deformation plate is fixedly connected between every two stretching plates. A notch is formed on the surface of the deformation plate. A support member is installed inside each notch. An external temperature measurement module is installed inside the housing. The external temperature measurement module is electrically connected to the control end of the electric push rod; When the external temperature measurement module detects that the temperature of the battery module is too high, the electric push rod extends to pull the stretching plate and the deformation plate, causing the deformation plate to deform. During the deformation process of the deformation plate, the support member is pulled, so that the support member provides a supporting effect for the battery module while releasing part of the space, thereby changing the space structure around the battery module.

[0010] Preferably, the support member includes: A plurality of support keys. Every two support keys are arranged in an upper and lower position as a group. Each group of support keys is fixedly connected to the upper and lower sides inside the notch; A plurality of active rods. Every two active rods are fixedly connected inside the notch; A plurality of driven rods. Each driven rod is rotatably connected between the active rod and the support key; A hole-shaped circulation cavity is opened inside the deformation plate and communicates with each notch; An external circulation module is installed outside the housing. The hole-shaped circulation cavity penetrates to the outer surfaces of the deformation plate and the stretching plate. The external circulation module is fixedly connected to the hole-shaped circulation cavity through a hose.

[0011] Preferably, both the support member and the notch are quadrilateral, and one of the diagonals of the quadrilateral is parallel to the telescopic direction of the electric push rod.

[0012] Preferably, the deformation plate is made of shape memory alloy. When the electric push rod pulls the deformation plate, the deformation plate and the notches on its surface can produce corresponding deformations and can return to their original shapes after the pulling force is removed.

[0013] Preferably, the side of the support key is made of elastic material, and the central part is made of hard material. When subjected to a stretching effect, the elastic material on the side deforms, while the hard material in the center can provide support for the battery module.

[0014] Preferably, a plurality of guide rails are installed on the inner wall of the housing, and the stretching plate is slidably connected to the surface of the guide rails.

[0015] Preferably, elliptical connecting rods are symmetrically installed between every two of the battery modules. The elliptical connecting rods are all located at the long sides of the battery modules. A driving rack is fixedly connected to the outer surface of the stretching plate. A gear is installed below the driving rack. A driven rack is engaged below the gear, and the driven rack is rotatably connected to the outer surface of the elliptical connecting rod.

[0016] Preferably, chutes are provided on the surfaces of the guide rails. The elliptical connecting rods are slidably connected inside the chutes. The driven racks are slidably connected inside the chutes. The elliptical connecting rods are rotatably connected inside the driven racks. A ring is rotatably connected to the outer surface of the gear, and the ring is fixedly connected to the outer surface of the guide rail. The gears are engaged with both the driven racks and the driving rack.

[0017] Preferably, the elliptical connecting rod is of a split structure, which is composed of two split elliptical structures on both sides, and the two sides at the center of the elliptical connecting rod can be mutually clamped. By clamping this part, the two split elliptical structures on both sides can be restored to a whole.

[0018] Preferably, a plurality of elliptical support blocks are fixedly connected inside the elliptical connecting rod. The major axis direction of the elliptical support blocks is perpendicular to the major axis direction of the elliptical connecting rod, and the diameter gradually decreases toward the side away from the center. Both the elliptical connecting rod and the elliptical support blocks are made of shape memory alloy, specifically nickel-titanium alloy.

[0019] Preferably, the deformation plate is made of nickel-titanium alloy.

[0020] Preferably, a fission device is installed inside the housing.

[0021] Preferably, the side of the support key is made of fluororubber material, while the central part is made of aluminum alloy material.

[0022] Preferably, a coolant is stored inside the external circulation module. After the external circulation module is started, the coolant can be circulated in the hole-shaped flow cavity, so as to cool the battery module.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the temperature of the battery module rises, driven by the deformation of the support key in the notch of the deformation plate, the support key moves from the initial contact position towards the center of the notch, thereby releasing space for the thermal expansion of the battery module, effectively avoiding the risk of excessive internal pressure in the battery module due to limited space, preventing damage to internal structures such as the rupture of the battery module diaphragm, greatly reducing the possibility of safety accidents such as short circuits, fires, and explosions. At the same time, as the support key moves, the change in the internal space of the notch prompts the flow path of the coolant in the hole-shaped flow cavity to change, enabling the coolant to more directly contact the central part of the support key and allowing the coolant to quickly carry away the heat conducted by the battery module, efficiently enhancing the heat dissipation effect, breaking the vicious cycle of blocked heat dissipation channels caused by the close stacking of traditional battery modules, and significantly extending the service life of the battery module.

[0024] 2. When the battery module is operating normally, the support key maintains basic support with a small contact area. On the one hand, it reduces the hindrance to the normal thermal expansion and contraction of the battery module, ensuring that the expansion and contraction of the battery module due to its own temperature change during operation are not overly restricted, effectively guaranteeing the structural stability of the battery module. On the other hand, the small contact area reduces the additional thermal resistance brought by contact conduction, facilitating the natural dissipation of the heat of the battery module itself and maintaining the normal operating temperature of the battery module in the initial stage. When the temperature of the battery module exceeds the preset safety threshold, the support key changes from point contact to surface contact with the battery module. In the surface contact state, the deformation plate and the support key jointly undertake the support task of the battery module. Compared with the traditional large-area direct support structure, the support structure occupies less space at non-high temperatures and can be flexibly adjusted to an effective support form at high temperatures, not only improving the space utilization rate but also significantly enhancing the support performance, ensuring that the battery module can obtain appropriate support under different temperature conditions.

[0025] 3. The deformation plate deforms under the pull of the electric push rod, and specific deformations occur at the edges of many quadrilateral notches on its surface. In the non-high-temperature state, the design of the notches and the support members makes the entire support structure occupy less space, optimizing the internal space layout of the battery module. When the temperature of the battery module rises, the deformation of the notches drives the movement of the support members and the support key, providing additional space for the battery module. The deformed notches have good load-bearing performance in the vertical direction, and the edges of each notch can bear external forces in the vertical direction, greatly enhancing the support effect of the battery module.

[0026] 4. In the initial state of battery module operation, since it is set on the long side of the battery module, which is prone to stress, when the battery module is subjected to vertical pressure due to its own gravity and thermal expansion, the elliptical connecting rod can naturally disperse the pressure along the elliptical arc surface by virtue of its own shape, avoiding stress concentration at a certain point or area, and effectively reducing the vertical pressure on the battery module and the guide rail; When the battery module continues to release heat, the rising temperature causes the electric push rod to contract, which in turn causes the elliptical connecting rod to be forced closer and deform. During this process, the upper and lower edges of the elliptical connecting rod expand close to the guide rail, and its deformation further increases the pressure dispersion effect. After the pressure is transmitted to the elliptical connecting rod, it can disperse the pressure to both sides more efficiently, better cope with the additional stress generated by thermal expansion and contraction and differences in component expansion coefficients inside the battery module, greatly enhancing the stability of the battery module structure in the vertical direction and ensuring the stable operation of the battery module. 5. When it is necessary to replace the battery module or perform other maintenance operations, the user only needs to separate the two parts that are connected to each other at the center of the elliptical connecting rod, and use its characteristic of being rotatably connected to the inside of the guide rail slot to easily rotate the elliptical connecting rod to quickly open the space on one side of the battery module that was originally protected and restricted by it. This design makes it possible to replace the battery module without large-scale disassembly of the entire battery module structure, significantly reducing maintenance time and labor costs, while effectively reducing the risk of damage to other components due to frequent large-scale disassembly. 6. In the actual use of the battery module, the stretch plate provides protection for the left and right sides of the battery module, while the elliptical connecting rod takes on the important task of providing protection for the front and rear sides of the battery module. In daily operation, the overall structure of the elliptical connecting rod tightly wraps the front and rear sides of the battery module, effectively protecting the battery module, ensuring the integrity of the battery module shell, and maintaining the normal performance of the battery module. Even under complex working conditions, such as when the battery module is subjected to external impact or vibration, the elliptical connecting rod can rely on its own structural strength to absorb and disperse part of the external force, reduce the direct impact on the battery module, and comprehensively guarantee the stable operation of the battery module in various environments, greatly improving the protection performance of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front perspective schematic diagram of the main structure of the present invention; Figure 2 It is a partial cutaway stereoscopic schematic diagram of the main structure of the present invention; Figure 3 For the present invention Figure 2 A magnified three-dimensional schematic diagram of the structure at center A; Figure 4 It is an exploded three-dimensional schematic diagram of the deformation plate, the stretching plate, the electric push rod and the support member of the present invention; Figure 5Schematic perspective view of a partial cross-section of the support member of the present invention; Figure 6 Schematic perspective view of a partial cross-section of the main structure of the second embodiment of the present invention; Figure 7 For the present invention Figure 6 Schematic perspective view of the enlarged structure at position B in the present invention; Figure 8 For the present invention Figure 6 Schematic perspective view of the enlarged structure at position C in the present invention; Figure 9 For the present invention Figure 6 Schematic perspective view of the enlarged structure at position D in the present invention; Figure 10 Schematic perspective view of the connection relationship between the elliptical connecting rod, the driven rack and the sliding groove in the present invention.

[0028] In the figure: 11. Housing; 12. Battery module; 13. Guide rail.

[0029] 21. Electric push rod; 22. Tensile plate; 23. Deformable plate; 24. Support member; 241. Support key; 242. Active rod; 243. Driven rod; 244. Hole-shaped flow cavity.

[0030] 31. Elliptical connecting rod; 32. Gear; 33. Active rack; 34. Driven rack; 35. Elliptical support block. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] It should be noted that the external temperature measurement module only provides the function of detecting the temperature of the battery module 12, the external circulation module only provides the function of cooling the battery module 12, and the fission device only provides the function of additional power generation. The working principles and specific structures of the above structures are all prior arts. Therefore, due to the generality of the above structures, the specific principles thereof will not be described in detail hereinafter.

[0033] Embodiment 1, please refer to as Figures 1 to 5As shown in the figure, an integrated battery pack structure equipped with a fission device includes a housing 11. Inside the housing 11, several battery modules 12 are installed. On the inner wall of the housing 11, several electric push rods 21 are symmetrically installed. At the output end of each electric push rod 21, a stretching plate 22 is installed. A deformation plate 23 is fixedly connected between every two stretching plates 22. Grooves are formed on the surface of the deformation plate 23. Inside each groove, a support member 24 is installed. An external temperature measurement module is installed inside the housing 11, and the external temperature measurement module is electrically connected to the control end of the electric push rod 21; When the external temperature measurement module detects that the temperature of the battery module 12 is too high, the electric push rod 21 extends to pull the stretching plate 22 and the deformation plate 23, causing the deformation plate 23 to deform. During the deformation process of the deformation plate 23, the support member 24 is pulled, so that the support member 24 provides a supporting effect for the battery module 12 while releasing some space, thereby changing the spatial structure around the battery module 12.

[0034] It should be noted that the support member 24 includes: several support keys 241. Every two support keys 241 are arranged in an upper and lower position as a group, and each group of support keys 241 is fixedly connected to the upper and lower sides inside the groove; several active rods 242. Every two active rods 242 are fixedly connected inside the groove; several driven rods 243. Each driven rod 243 is rotatably connected between the active rod 242 and the support key 241; a hole-shaped circulation cavity 244 is formed inside the deformation plate 23 and communicates with each groove; An external circulation module is installed outside the housing 11. The hole-shaped circulation cavity 244 penetrates to the outer surfaces of the deformation plate 23 and the stretching plate 22. The external circulation module is fixedly connected to the hole-shaped circulation cavity 244 through a hose. The support member 24 and the groove are both quadrilateral, and one of the diagonals of the quadrilateral is parallel to the telescopic direction of the electric push rod 21. The deformation plate 23 is made of shape memory alloy. When the electric push rod 21 pulls the deformation plate 23, the deformation plate 23 and the groove on its surface can produce corresponding deformations and can return to their original states after the pulling force is withdrawn. The side of the support key 241 is made of elastic material, and the central part is made of hard material. When subjected to a stretching effect, the elastic material on the side deforms, while the hard material in the center can provide support for the battery module 12. Several guide rails 13 are installed on the inner wall of the housing 11, and the stretching plate 22 is slidably connected to the surface of the guide rail 13; the deformation plate 23 is made of nickel-titanium alloy. A fission device is installed inside the housing 11. The side of the support key 241 is made of fluororubber material, and the central part is made of aluminum alloy material. The external circulation module stores coolant inside. After the external circulation module is started, the coolant can be circulated in the hole-shaped circulation cavity 244, so as to cool the battery module 12.

[0035] Specifically, start the external circulation module to make the coolant circulate in the hole-shaped flow cavity 244. Since there is a certain gap between the deformation plate 23 and the battery module 12, at this time, the hard center part of the support key 241 is in a point contact state with the battery module 12. On the one hand, when the battery module 12 is working normally, the support key 241 maintains basic support with a small contact area at this time, reducing the hindrance to the normal thermal expansion and contraction of the battery module 12, so that the expansion and contraction of the battery module 12 caused by its own temperature change during operation are not overly restricted, ensuring the stability of the battery structure; on the other hand, the small contact area also reduces the additional thermal resistance brought by contact conduction, which is beneficial to the natural dissipation of the heat of the battery module 12 itself and maintains the normal operating temperature of the battery module 12 in the initial stage.

[0036] During the operation of the battery module 12 such as charging and discharging, due to factors such as electrochemical reactions, the temperature continues to rise. Once the external temperature measurement module detects that the temperature of the battery module 12 exceeds the preset safety threshold, it will immediately convert the temperature signal into an electrical signal and transmit it to the control circuit of the electric push rod 21.

[0037] At this time, the electric push rod 21 starts to contract. During the contraction process, the electric push rod 21 pulls the entire deformation plate 23 to move in a direction away from the center of the housing 11.

[0038] When the deformation plate 23 is subjected to a tensile force, because a large number of quadrilateral notches are provided on its surface, and one of the diagonals of the notch is parallel to the telescopic direction of the electric push rod 21, specific deformations will occur at the notch edges.

[0039] Specifically, the tensile force direction is horizontal, and the two side lengths of the notch are gradually elongated. In the vertical direction perpendicular to the tensile force, the edges of the notch are gradually close to the notch center under the combined influence of the Poisson effect of the material and the structural deformation. This deformation method changes the original shape of the notch, and as the deformation continues, the notch exerts a force on each component of the support member 24 installed therein.

[0040] During the deformation of the notch, the active rod 242 will be driven to move to both sides as the notch expands horizontally. Since one end of the driven rod 243 is rotatably connected to the active rod 242 and the other end is rotatably connected to the support key 241, when the active rod 242 moves, the driven rod 243 rotates around its connection point with the active rod 242, thereby pushing the support key 241 to move towards the notch center.

[0041] During this process, the fluororubber material on the side of the support key 241 will undergo corresponding deformations due to its good elasticity to adapt to the change of the overall structure, while the hard aluminum alloy part in its center generates displacement under the push of the driven rod 243. As the support key 241 moves, the original point contact state with the battery module 12 changes to a surface contact state.

[0042] At this time, the deformed plate 23 and the support key 241 jointly undertake the support task of the battery module 12. From the perspective of space utilization, compared with the traditional large-area direct support structure, this design occupies less space in the non-high-temperature state. After the temperature rises and triggers the structural change, it can be flexibly adjusted to an effective support form, greatly improving the space utilization rate. In terms of support performance, after the deformed plate 23 is deformed by force, due to the existence of the notches, the edges of each notch bear the external force in the vertical direction, so it has good load-bearing performance in the vertical direction. When the battery module 12 expands due to heat, the movement of the support key 241 provides additional space for it, avoiding excessive internal pressure in the battery module 12 due to space limitation, which may affect the battery performance and even cause potential safety hazards.

[0043] At the same time, as the support key 241 moves towards the center of the notch, the internal space of the notch becomes smaller, and the flow path of the coolant in the hole-shaped flow cavity 244 changes, enabling it to directly contact the aluminum alloy central part of the support key 241. Due to the good thermal conductivity of the aluminum alloy, the coolant can quickly take away the heat conducted from the battery module 12 by the support key 241. On the one hand, it greatly enhances the heat dissipation effect on the battery module 12, can quickly reduce the temperature of the battery module 12, and prevent the battery module 12 from deteriorating in performance and shortening its lifespan due to continuous high temperature. On the other hand, the coolant directly acts on the support key 241 in close contact with the battery module 12, making the heat dissipation process more efficient and uniform, avoiding local overheating of the battery module 12, and further ensuring the stable operation of the battery module 12.

[0044] When the external temperature measurement module detects that the temperature of the battery module 12 has dropped to the safe range, it will send an electrical signal to the electric push rod 21 again. At this time, the electric push rod 21 extends, driving the tension plate 22 and the deformed plate 23 to move towards the center of the housing 11, returning to the initial position. Under the dual action of the shape memory alloy characteristics and the structural reset of the deformed plate 23, the surface notches gradually return to the initial shape. Each component of the support 24 returns to the original state under the drive of the elastic restoring force and the structural reset, and the support key 241 re-establishes point contact with the battery module 12.

[0045] Embodiment 2, on the basis of Embodiment 1, please refer to as Figures 6 to 10 As shown, elliptical connecting rods 31 are symmetrically installed between every two battery modules 12. The elliptical connecting rods 31 are all located at the long sides of the battery modules 12. The outer surface of the tension plate 22 is fixedly connected with a driving rack 33. A gear 32 is installed below the driving rack 33, and a driven rack 34 is engaged below the gear 32. The driven rack 34 is rotatably connected to the outer surface of the elliptical connecting rod 31.

[0046] It should be noted that sliding grooves are formed on the surfaces of the guide rails 13. The elliptical connecting rod 31 is slidably connected inside the sliding grooves, and the driven rack 34 is slidably connected inside the sliding grooves. The elliptical connecting rod 31 is rotatably connected inside the driven rack 34. A ring is rotatably connected to the outer surface of the gear 32, and the ring is fixedly connected to the outer surface of the guide rail 13. The gears 32 are meshed with the driven rack 34 and the driving rack 33 respectively. The elliptical connecting rod 31 is of a split structure, which consists of two split elliptical structures on both sides, and the two sides at the center of the elliptical connecting rod 31 can be clamped with each other. By clamping this part, the two split elliptical structures on both sides can be restored into a whole. A plurality of elliptical support blocks 35 are fixedly connected inside the elliptical connecting rod 31. The major axis direction of the elliptical support blocks 35 is perpendicular to the major axis direction of the elliptical connecting rod 31, and the diameter gradually decreases toward the side away from the center. Both the elliptical connecting rod 31 and the elliptical support blocks 35 are made of shape memory alloy material, specifically nickel-titanium alloy material.

[0047] Specifically, on the basis of Embodiment 1, when the battery module 12 continuously generates heat during operation and the temperature rises to trigger the external temperature measurement module, the electric push rod 21 contracts.

[0048] When the electric push rod 21 contracts, the driving rack 33 fixedly connected to the outer surface is driven to move synchronously by the connected tension plate 22. Since the gear 32 installed below the driving rack 33 is meshed with the driving rack 33, according to the transmission principle, the movement of the driving rack 33 will drive the gear 32 to rotate. And the gear 32 is meshed with the driven rack 34 below, so that the driven rack 34 generates a movement in the opposite direction to the driving rack 33. The driven rack 34 is rotatably connected to the outer surface of the elliptical connecting rod 31. When the driven rack 34 moves, it pushes the elliptical connecting rod 31 to move closer to the middle of the battery module 12.

[0049] During the process of the elliptical connecting rod 31 being forced to move closer, while the upper and lower edges of the elliptical connecting rod 31 are being pushed, they expand and are close to the upper and lower sides of the guide rail 13. At this time, the expanded elliptical connecting rod 31 provides support for the guide rail 13, and the guide rail 13 provides support for the tension plate 22, so as to realize that the elliptical connecting rod 31 indirectly provides support for the tension plate 22 and the battery module 12.

[0050] It is worth mentioning that the elliptical connecting rod 31 is arranged at the long side of the battery module 12, which is the area where stress is most likely to occur during the operation of the battery module 12. Since the battery module 12 is in the vertical direction, the superposition of the self-gravity of the battery module 12 and the upward extrusion force generated by the thermal expansion of the battery module 12 causes the vertical pressure borne by the guide rail 13 and the battery module 12 to continuously increase. When the elliptical connecting rod 31 is arranged here, the vertical pressure is transmitted to the elliptical connecting rod 31. During the force-deformation process of the elliptical connecting rod 31, the pressure can be dispersed to both sides, and the elliptical shape makes the pressure distribution more uniform on its surface. When the pressure acts on the elliptical connecting rod 31, it will be dispersed along the arc surface of the ellipse, avoiding stress concentration at a certain point or area, thereby effectively reducing the pressure on the battery module 12 and the guide rail 13 in the vertical direction.

[0051] In addition, since the major axis direction of the elliptical support block 35 is perpendicular to the major axis direction of the elliptical connecting rod 31, and the diameter gradually decreases towards the side away from the center, these elliptical support blocks 35 can further enhance the structural strength of the elliptical connecting rod 31. When bearing pressure, they act like tiny support units, sharing the pressure with the elliptical connecting rod 31. The design that the diameter of the elliptical support block 35 gradually decreases towards the side away from the center helps to provide more concentrated support force in the edge area with larger pressure, enabling the elliptical connecting rod 31 to better cope with pressure changes at different positions.

[0052] It should be noted that during the actual use of the battery module 12, the stretching plate 22 not only plays a key role in the drive of the electric push rod 21, but also provides protection functions for the left and right sides of the battery module 12, while the elliptical connecting rod 31 takes on the important task of providing protection for the front and back sides of the battery module 12.

[0053] Since the elliptical connecting rod 31 adopts a split design, during normal use, the two parts are tightly connected through the clamping structure at the center, and the two form a stable whole to protect the battery module 12 from the front and back directions.

[0054] When it comes to the situation where the battery module 12 needs to be replaced, the operation is extremely convenient. The user only needs to separate the two parts that are clamped to each other at the center of the elliptical connecting rod 31, and utilize the characteristic that the elliptical connecting rod 31 is rotatably connected to the inside of the chute of the guide rail 13 to easily rotate the elliptical connecting rod 31. As the elliptical connecting rod 31 rotates, one side of the battery module 12 that was originally protected and restricted by it will be opened, and at this time, the battery module 12 can be smoothly taken out for replacement operation.

[0055] This design greatly improves the convenience of maintaining the battery module 12, eliminating the need for large-scale disassembly of the entire battery module 12 structure, reducing maintenance time and labor costs. At the same time, it also reduces the risk of damage to other components caused by frequent disassembly, further ensuring the reliability and stability of the battery module 12 during long-term use.

[0056] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0057] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated battery pack structure equipped with a fission device, comprising a housing (11), and a plurality of battery modules (12) are installed inside the housing (11), characterized in that: On the inner wall of the said housing (11), a number of electric push rods (21) are symmetrically installed. The output end of each electric push rod (21) is equipped with a stretching plate (22). A deformation plate (23) is fixedly connected between every two stretching plates (22). Notch openings are provided on the surface of the deformation plate (23). A support member (24) is installed inside each notch opening. An external temperature measurement module is installed inside the housing (11). The external temperature measurement module is electrically connected to the control end of the electric push rod (21). When the external temperature measurement module detects that the temperature of the battery module (12) is too high, the electric push rod (21) extends to pull the stretching plate (22) and the deformation plate (23), causing the deformation plate (23) to deform. During the deformation process of the deformation plate (23), the support member (24) is pulled, so that the support member (24) provides a supporting effect for the battery module (12) while releasing some space, thereby changing the spatial structure around the battery module (12).

2. An integrated battery pack structure equipped with a fission device according to claim 1, characterized in that: The support member (24) includes: A number of support keys (241). Every two support keys (241) are arranged in an upper and lower position as a group. Each group of support keys (241) is fixedly connected to the upper and lower sides inside the notch opening. A number of active rods (242). Every two active rods (242) are fixedly connected inside the notch opening. A number of driven rods (243). Each driven rod (243) is rotatably connected between the active rod (242) and the support key (241). A hole-shaped circulation cavity (244). The hole-shaped circulation cavity (244) is opened inside the deformation plate (23) and communicates with each notch opening. An external circulation module is installed outside the housing (11). The hole-shaped circulation cavity (244) penetrates to the outer surfaces of the deformation plate (23) and the stretching plate (22). The external circulation module is fixedly connected to the hole-shaped circulation cavity (244) through a hose.

3. An integrated battery pack structure equipped with a fission device according to claim 1, characterized in that: Both the support member (24) and the notch opening are quadrilateral, and one of the diagonals of the quadrilateral is parallel to the telescopic direction of the electric push rod (21).

4. An integrated battery pack structure equipped with a fission device according to claim 1, characterized in that: The deformation plate (23) is made of shape memory alloy. When the electric push rod (21) pulls the deformation plate (23), the deformation plate (23) and the notch opening on its surface can produce corresponding deformations and can return to their original states after the pulling force is withdrawn.

5. An integrated battery pack structure equipped with a fission device according to claim 2, characterized in that: The side of the support key (241) is made of elastic material, and the central part is made of hard material. When subjected to a stretching effect, the elastic material on the side deforms, while the hard material in the center can provide support for the battery module (12).

6. An integrated battery pack structure equipped with a fission device according to claim 1, characterized in that: A number of guide rails (13) are installed on the inner wall of the housing (11). The stretching plate (22) is slidably connected to the surface of the guide rail (13). Chute grooves are provided on the surface of the guide rail (13).

7. An integrated battery pack structure equipped with a fission device according to claim 1, characterized in that: An elliptical connecting rod (31) is symmetrically installed between every two of the battery modules (12). The elliptical connecting rods (31) are all located at the long sides of the battery modules (12). An active rack (33) is fixedly connected to the outer surface of the tension plate (22). A gear (32) is installed below the active rack (33). A driven rack (34) is engaged below the gear (32). The driven rack (34) is rotatably connected to the outer surface of the elliptical connecting rod (31).

8. An integrated battery pack structure equipped with a fission device according to claim 7, characterized in that: The elliptical connecting rod (31) is slidably connected inside the chute. The driven rack (34) is slidably connected inside the chute. The elliptical connecting rod (31) is rotatably connected inside the driven rack (34). A ring is rotatably connected to the outer surface of the gear (32). The ring is fixedly connected to the outer surface of the guide rail (13). The gears (32) are all engaged with the driven rack (34) and the active rack (33).

9. An integrated battery pack structure equipped with a fission device according to claim 7, characterized in that: The elliptical connecting rod (31) is of a split structure, which is composed of two split elliptical structures on both sides. And the two sides at the center of the elliptical connecting rod (31) can be snap-fitted with each other. By snap-fitting this part, the two split elliptical structures on both sides can be restored into a whole.

10. An integrated battery pack structure equipped with a fission device according to claim 7, characterized in that: A number of elliptical support blocks (35) are fixedly connected inside the elliptical connecting rod (31). The major axis direction of the elliptical support blocks (35) is perpendicular to the major axis direction of the elliptical connecting rod (31), and the diameter gradually decreases toward the side away from the center. Both the elliptical connecting rod (31) and the elliptical support blocks (35) are made of shape memory alloy material.

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