A lightweight battery box with anti-corrosion function

Abstract

The present invention provides a lightweight battery box with anti-corrosion function, belonging to the technical field of battery boxes. It includes an installation box, a battery pack is installed at the bottom of the inner wall of the installation box, and a fireproof board is installed on the upper part of the inner wall of the installation box. The present invention promotes the airbag to continuously expand and contact the slotted inner wall through gas conversion between the gas storage chamber and the airbag, forming a sealing effect between the installation box and the sealing plate, greatly preventing water vapor or rainwater from flowing into the battery box from the gap, and avoiding the problem that some corrosive liquids such as rainwater contact the battery pack and cause the circuit inside the battery box to be corroded. At the same time, a protective component is set to absorb and disperse the energy impact on the surface of the protective cover, ensuring the structural strength while greatly reducing the overall weight. Through the specially designed prefabricated fracture groove and variable-oriented corrugated tube, the anti-collision performance and wading water drainage are good, while achieving the effect of improving the lightweight of the battery box.

Description

Technical Field

[0001] The present invention relates to the technical field of battery boxes, and in particular to a lightweight battery box with an anti-corrosion function. Background Art

[0002] The battery casing, as an important component of the battery, is responsible for wrapping and protecting the internal electrochemical system, and is crucial to the safe operation of the battery. A good battery casing should have good sealing, sufficient strength, conductivity or insulation, corrosion resistance, and suitable thermal conductivity. With the development of new energy technologies, especially the popularization of electric vehicles and energy storage systems, the demand for battery casings has become increasingly prominent, and higher requirements have been placed on their materials, design, and manufacturing.

[0003] Existing battery packs are generally installed in battery cases, and the battery cases are installed on the body of new energy vehicles for use. The battery packs need to avoid being immersed in liquids for a long time during use. If the battery case is not well sealed, water vapor or rainwater will flow into the battery case, causing damage to the battery. At the same time, some corrosive liquids such as rainwater will corrode the circuits inside the battery case after contacting the battery pack, which will affect the safety of the battery and even cause a short circuit in the battery. Therefore, it is urgent to improve the sealing of the battery case, and at the same time prevent the car from being hit by external forces during driving, protect the battery case, and avoid damage to the battery case that affects the normal use of the battery pack. Therefore, the present application provides a lightweight battery case with anti-corrosion function to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a lightweight battery case with an anti-corrosion function to solve the problem that if the battery shell of the existing battery pack is not well sealed, water vapor or rainwater will flow into the battery case, causing damage to the battery. At the same time, some corrosive liquids such as rainwater will contact the battery pack, causing the circuits inside the battery case to be corroded, which will affect the safety of the battery and even cause a battery short circuit. Therefore, it is urgent to improve the sealing of the battery case, and at the same time prevent the car from being hit by external forces during driving, and protect the battery case to avoid damage to the battery case and thus affect the normal use of the battery pack. Therefore, the present application provides a lightweight battery case with an anti-corrosion function to meet the needs.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A lightweight battery box with anti-corrosion function, comprising a mounting box, a battery pack is mounted on the bottom of the inner wall of the mounting box, a fireproof board is mounted on the upper part of the inner wall of the mounting box, a slot is mounted at the top edge of the inner wall of the mounting box, a positioning plate is mounted on the top of the mounting box, a heat dissipation hole is mounted in an array on the surface of the mounting box, a drainage hole is mounted on the bottom of the mounting box, a sealing plate is mounted on the top of the mounting box, a sealing aluminum nail is mounted on one side of the sealing plate, the number of the sealing aluminum nails is set to multiple groups, and the multiple groups of sealing aluminum nails are arranged at equal angles on the side of the sealing plate The sealing aluminum nail is arranged in a certain degree, and the bottom end of the sealing aluminum nail is in contact with the top of the installation box; a sealing component is nested and installed on the inner wall of the sealing plate, and the sealing component is used to seal the inner wall of the installation box and the sealing plate; an extrusion component is installed on the top of the sealing plate, and the extrusion component is used to perform secondary extrusion sealing on the sealing component; a protection component is installed on the side and bottom of the installation box, and the protection component is used to protect the bottom of the installation box from collision; the extrusion component is located at the top of the sealing component, and the protection component is located at the bottom of the extrusion component.

[0007] Optionally, the sealing assembly includes a rotating column, which is installed at the bottom end of the sealing plate. The cross-section of the rotating column is designed to be circular. A torsion spring is installed on one side of the rotating column. The rotating column is elastically connected to the bottom end of the sealing plate through the torsion spring. One end of the rotating column contacts an annular protrusion, which is installed on the inner wall of the mounting box.

[0008] Optionally, the sealing assembly also includes an air storage chamber, the bottom end of the air storage chamber is installed with a sealing plate, an airbag is connected to the top of the air storage chamber, the surface of the airbag is in contact with the inner wall of the groove, the material of the airbag is set to nitrile rubber, and a piston plate is installed in the inner cavity of the air storage chamber. The bottom end of the piston plate extending out of the air storage chamber is connected to a first connecting rod, the other end of the first connecting rod is connected to a second connecting rod, and the other end of the second connecting rod is connected to one side of the rotating column.

[0009] Optionally, the extrusion assembly includes a liquid storage barrel, which is installed on the top of the sealing plate. The internal cavity of the liquid storage barrel is filled with polyurethane foam. A rotating ring is provided at the bottom end of the inner wall of the liquid storage barrel. A guide cavity is installed through the rotating ring. The cross-section of the guide cavity is designed to be an "L" shaped structure.

[0010] Optionally, a transmission rod is installed at the top of the rotating ring, and a turntable is installed at the top of the transmission rod extending out of the liquid storage barrel, a limit ring is installed on the outer surface of the upper part of the transmission rod, and the inner wall of the limit ring contacts with a clamping column, a push plate is installed on one side of the bottom end of the clamping column, an elastic telescopic rod is installed at the bottom end of the clamping column, the elastic telescopic rod is installed on the top of the sealing plate, and the clamping column is elastically connected to the top of the sealing plate through the elastic telescopic rod.

[0011] Optionally, a guide base is provided on the inner wall of the rotating ring, the guide base is installed on the top of the inner wall of the sealing plate, a guide port is installed on one side of the guide base, a sealing ring is installed on the surface of the guide base, and the surface of the sealing ring is in contact with the inner wall of the rotating ring.

[0012] Optionally, the protection assembly includes a protective cover, the bottom end of the protective cover is installed on one side of the mounting box, the cross-section of the protective cover is designed to be an arc structure, the number of the protective covers is set to multiple groups, the multiple groups of protective covers are installed at equal angles on the side of the mounting box, and a mounting ring is installed on the top of the protective cover.

[0013] Optionally, a buffer plate is installed on the inner wall of the protective cover, the cross-section of the buffer plate is designed to be a polygonal structure, the material of the buffer plate is set to carbon fiber material, the number of the buffer plates is set to multiple groups, the multiple groups of buffer plates are interconnected, and the multiple groups of buffer plates are installed on the inner wall of the protective cover in a honeycomb structure.

[0014] Optionally, the protection component also includes a support plate, which is installed on the side of the installation box, the surface of the support plate is set to a hollow structure, the cross-section of the hollow structure on the surface of the support plate is a triangular structure, the surface of the support plate is provided with prefabricated grooves, a protective plate is installed at one end of the support plate, the material of the support plate and the protective plate is set to carbon fiber material, openings are equidistantly installed on the surface of the protective plate, the cross-section of the opening is set to a semicircular structure, the number of the support plates and the protective plates is set to multiple groups, and the multiple groups of support plates and protective plates are arranged in an array on the side of the installation box.

[0015] Optionally, the protection component also includes a bellows, the material of the bellows is set to tin bronze, the top of the bellows is installed on the bottom of the installation box, the surface of the bellows is provided with an air inlet, the bottom of the bellows is connected to an anti-collision plate, the top of the anti-collision plate is installed with a spring, and the top of the spring is elastically connected to the bottom of the installation box.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting a sealing component, utilizing the force when the sealing plate is pressed down, through the linkage cooperation between the first connecting rod and the second connecting rod, and at the same time coordinating the gas conversion between the air storage chamber and the airbag, the airbag is pushed to continuously expand and contact the inner wall of the groove, thereby forming a sealing effect between the installation box and the sealing plate. The structure is simple and the use cost is low. It greatly prevents water vapor or rainwater from flowing into the battery box through the gap to cause damage to the battery, and avoids the problem of corrosive liquids such as rainwater contacting the battery pack, causing the circuit inside the battery box to be corroded, thereby improving the safety of battery use.

[0018] The present invention cooperates with an extrusion component and utilizes the properties of polyurethane foam that can be used for heat insulation and buffering. The polyurethane foam is expanded and squeezed into an airbag inside the sealing plate to further ensure the degree of fit between the airbag and the inner wall of the groove. At the same time, the expanded polyurethane foam is used to form a buffer insulation layer in the internal cavity of the sealing plate. In combination with the fireproof effect of the fireproof board, a secondary fireproof effect is achieved when the top of the installation box is installed. At the same time, the expanded polyurethane foam absorbs and buffers the energy when the sealing plate is impacted, thereby reducing the energy impact on the top of the sealing plate, reducing the possibility of damage to the top of the sealing plate caused by the energy impact, and improving the fireproof effect of the top of the box.

[0019] The present invention arranges a protection component, utilizes the high strength and lightweight characteristics of carbon fiber, utilizes multiple groups of buffer plates to absorb and disperse the energy impact on the surface of the protective cover, and simultaneously arranges the multiple groups of buffer plates in a honeycomb shape, utilizes the characteristics of the honeycomb structure with high rigidity and energy absorption capacity, so that the multiple groups of buffer plates ensure the structural strength while greatly reducing the overall weight after the multiple groups of buffer plates are installed, thereby achieving a lightweight effect. At the same time, when the protective cover is impacted by external force, the multiple groups of protective covers can effectively disperse the load and reduce the impact energy, so that the protective cover and the buffer plates form an impact protection layer on the side of the contact part between the sealing plate and the mounting box, thereby avoiding damage to the battery pack when the sealing plate and the mounting box are deformed by impact, and avoiding excessive impact on the subsequent recycling of the battery pack. While having good heat dissipation, the anti-collision capability and lightweight effect are achieved.

[0020] The present invention provides secondary protection for the battery box through the support plate and the protection plate, and forms a local stress concentration point on the surface of the support plate through specially designed prefabricated fracture grooves. When the impact force is too large, the support plate is broken, so that the support plate and the protection plate are separated from the side of the installation box, and the support plate and the protection plate are automatically separated after being hit, thereby preventing the support plate and the protection plate from causing damage to the side of the installation box after being hit with a large impact force. At the same time, the good elasticity and ability to withstand a certain degree of bending of tin bronze are utilized to prevent the bellows from being damaged when the anti-collision plate is hit, so that the bellows can synchronously adapt to the position change of the anti-collision plate, ensuring that in a wading environment, water entering the bottom of the installation box can be discharged normally, while protecting the bottom of the installation box. The drainage demand of the bottom of the installation box is met, thereby improving the safety of the bottom of the vehicle battery box in a wading environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of a lightweight battery box with anti-corrosion function;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of a lightweight battery box with anti-corrosion function;

[0024] Figure 3 is a schematic diagram of the sealing component structure;

[0025] Figure 4 for Figure 3 A magnified view of middle;

[0026] Figure 5 It is a schematic diagram of the extrusion component structure;

[0027] Figure 6 It is a schematic diagram of a partial cross-sectional structure of an extrusion component;

[0028] Figure 7 To protect the schematic diagram of the component structure;

[0029] Figure 8 It is a schematic diagram of the structure of the protective cover, the mounting ring and the buffer plate;

[0030] Fig. 9 It is a schematic diagram of the support plate, prefabricated fracture groove, protection plate and opening structure;

[0031] Fig.10 To protect the schematic diagram of the structure of some components;

[0032] Fig.11 Schematic diagram of the cross-sectional structure of some components to protect the components.

[0033] Reference numerals:

[0034] 1. Installation box; 2. Battery pack; 3. Fireproof board; 30. Slot; 31. Positioning plate; 4. Heat dissipation hole; 5. Drain hole; 6. Sealing plate; 7. Sealing aluminum nail; 8. Sealing assembly; 81. Rotating column; 82. Torsion spring; 83. Annular bump; 84. Air storage chamber; 85. Air bag; 86. Piston plate; 87. First connecting rod; 88. Second connecting rod; 9. Extrusion assembly; 91. Liquid storage barrel; 92. Rotating ring; 93. Diversion cavity; 94. Transmission rod; 9 5. Turntable; 96. Limiting ring; 97. Clamping column; 98. Push plate; 99. Elastic telescopic rod; 910. Diversion base; 911. Diversion port; 912. Sealing ring; 10. Protection assembly; 101. Protection cover; 102. Mounting ring; 103. Buffer plate; 104. Support plate; 105. Prefabricated fracture groove; 106. Protection plate; 107. Opening; 108. Bellows; 109. Air inlet; 1010. Anti-collision plate; 1011. Spring.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0036] The following is a detailed description of a lightweight battery box with anti-corrosion function provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0037] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0038] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0039] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0040] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0041] like Figures 1 to 11 As shown, an embodiment of the present invention provides a lightweight battery box with an anti-corrosion function, including a mounting box 1, a battery pack 2 is mounted on the bottom of the inner wall of the mounting box 1, a fireproof board 3 is mounted on the upper part of the inner wall of the mounting box 1, a slot 30 is mounted at the top edge of the inner wall of the mounting box 1, a positioning plate 31 is mounted on the top of the mounting box 1, a heat dissipation hole 4 is installed in an array through the surface of the mounting box 1, a drainage hole 5 is installed through the bottom of the mounting box 1, a sealing plate 6 is installed on the top of the mounting box 1, and a sealing aluminum nail 7 is installed on one side of the sealing plate 6. The number of the sealing aluminum nails 7 is set to multiple groups, and the multiple groups of sealing aluminum nails 7 are on the side of the sealing plate 6. The surfaces are arranged at equal angles, and the bottom end of the sealing aluminum nail 7 is in contact with the top of the installation box 1; the sealing component 8 is nested and installed on the inner wall of the sealing plate 6, and the sealing component 8 is used to seal the inner wall of the installation box 1 and the sealing plate 6; the extrusion component 9 is installed on the top of the sealing plate 6, and the extrusion component 9 is used to perform secondary extrusion sealing on the sealing component 8; the protection component 10 is installed on the side and bottom of the installation box 1, and the protection component 10 is used to protect the bottom of the installation box 1 from collision; the extrusion component 9 is located at the top of the sealing component 8, and the protection component 10 is located at the bottom of the extrusion component 9.

[0042] By setting the sealing component 8, the airbag 85 is pushed to continuously expand and contact the inner wall of the groove 30, so as to form a sealing effect between the installation box 1 and the sealing plate 6. The structure is simple and the use cost is low. By setting the extrusion component 9, the polyurethane foam is used to expand and squeeze the airbag 85 inside the sealing plate 6, so as to further ensure the fit between the airbag 85 and the inner wall of the groove 30. At the same time, the expanded polyurethane foam absorbs and buffers the energy when the sealing plate 6 is impacted. By setting the protection component 10, multiple groups of buffer plates 103 are used to absorb and distribute the energy impact on the surface of the protective cover 101. Dispersion is achieved by forming an impact protection layer on the side of the contact part between the sealing plate 6 and the mounting box 1 by the protective cover 101 and the buffer plate 103. At the same time, the battery box is secondary protected by the support plate 104 and the protection plate 106 to prevent the support plate 104 and the protection plate 106 from being damaged on the side of the mounting box 1 after being hit with a large force, and to prevent the anti-collision plate 1010 from being damaged on the corrugated tube 108 when being hit. While the anti-collision plate 1010 protects the bottom of the mounting box 1, it ensures that the water entering the bottom of the mounting box 1 in a wading environment can be discharged normally.

[0043] like Figure 3 and Figure 4 As shown, the sealing assembly 8 includes a rotating column 81, which is installed at the bottom end of the sealing plate 6. The cross-section of the rotating column 81 is designed to be circular. A torsion spring 82 is installed on one side of the rotating column 81. The rotating column 81 is elastically connected to the bottom end of the sealing plate 6 through the torsion spring 82. One end of the rotating column 81 contacts with an annular protrusion 83, and the annular protrusion 83 is installed on the inner wall of the mounting box 1. The sealing assembly 8 also includes an air storage chamber 84. An air bag 85 is connected to the top of the air storage chamber 84. The surface of the air bag 85 contacts the inner wall of the groove 30. The material of the air bag 85 is set to nitrile rubber. A piston plate 86 is installed in the internal cavity of the air storage chamber 84. The bottom end of the piston plate 86 extending out of the air storage chamber 84 is connected to a first connecting rod 87, and the other end of the first connecting rod 87 is connected to a second connecting rod 88, and the other end of the second connecting rod 88 is connected to one side of the rotating column 81.

[0044] After the operator installs the battery pack 2 and the fireproof board 3 in the installation box 1, the operator aligns the sealing plate 6 with the installation box 1 and presses it down to install it. While pressing down the sealing plate 6, the rotating column 81 is driven to approach and contact the annular protrusion 83. Under the continuous downward pressure of the sealing plate 6 and the action of the annular protrusion 83, the rotating column 81 is rotated. While the rotating column 81 rotates, it pushes the second connecting rod 88. While the second connecting rod 88 is subjected to force, it pushes the first connecting rod 87. Under the continuous rotation of the rotating column 81, the first connecting rod 87 is The connecting rod 87 pushes the bottom end of the piston plate 86 extending out of the air storage chamber 84 to slide upward. While sliding, the piston plate 86 squeezes the air in the air storage chamber 84 into the airbag 85, causing the airbag 85 to continue to expand. When the sealing plate 6 is pressed down into place, one end surface of the airbag 85 contacts the inner wall of the groove 30. At the same time, when the sealing plate 6 is pressed down into place, the bottom ends of the multiple groups of sealing aluminum nails 7 on the side of the sealing plate 6 contact the top of the installation box 1. Then the operator uses the multiple groups of sealing aluminum nails 7 to seal the sealing plate 6 and the installation box 1.

[0045] By setting the elastic cooperation between the rotating column 81 and the torsion spring 82, utilizing the force when the sealing plate 6 is pressed down, through the linkage cooperation between the first connecting rod 87 and the second connecting rod 88, and at the same time coordinating the gas conversion between the air storage chamber 84 and the airbag 85, the airbag 85 is pushed to continuously expand and contact the inner wall of the groove 30, thereby forming a sealing effect between the installation box 1 and the sealing plate 6. The structure is simple and the use cost is low.

[0046] like Figures 5 and 6 As shown, the extrusion assembly 9 includes a liquid storage barrel 91, which is installed on the top of the sealing plate 6. The internal cavity of the liquid storage barrel 91 is filled with polyurethane foam. A rotating ring 92 is sleeved on the bottom of the inner wall of the liquid storage barrel 91. A guide cavity 93 is installed through the rotating ring 92. The cross-section of the guide cavity 93 is designed to be an "L"-shaped structure. A transmission rod 94 is installed on the top of the rotating ring 92. A turntable 95 is installed on the top of the transmission rod 94 extending out of the liquid storage barrel 91. A limit ring 96 is installed on the outer surface of the upper part of the transmission rod 94. The inner wall of the limit ring 96 is connected to the inner wall of the limit ring 96. There is a card column 97, a push plate 98 is installed on one side of the bottom end of the card column 97, an elastic telescopic rod 99 is installed on the bottom end of the card column 97, the elastic telescopic rod 99 is installed on the top of the sealing plate 6, the card column 97 is elastically connected to the top of the sealing plate 6 through the elastic telescopic rod 99, a guide base 910 is sleeved on the inner wall of the rotating ring 92, the guide base 910 is installed on the top of the inner wall of the sealing plate 6, a guide port 911 is installed on one side of the guide base 910, a sealing ring 912 is installed on the surface of the guide base 910, and the surface of the sealing ring 912 is in contact with the inner wall of the rotating ring 92.

[0047] The push plate 98 is then pushed down by the operator, and the push plate 98 is pushed down while driving the clamping column 97 downward. The clamping column 97 is pushed down while driving the elastic telescopic rod 99 at the bottom to retract. At the same time, the top surface of the clamping column 97 is out of the clamping state with the inner wall of the limit ring 96. The operator rotates the turntable 95. The turntable 95 drives the transmission rod 94 at the bottom to rotate while driving the rotating ring 92 to rotate synchronously through the transmission rod 94. The rotation of the rotating ring 92 drives the internal diversion cavity 93 to rotate synchronously. While the diversion cavity 93 rotates, the inner wall of the diversion cavity 93 and the sealing ring 912 remain in close contact. Under the continuous rotation of the rotating ring 92, the bottom end hole of the diversion cavity 93 is rotated to align with the diversion port 911 on one side of the diversion base 910, so that the diversion cavity 93 and the diversion port 911 are connected, so that the polyurethane foam in the internal cavity of the liquid storage barrel 91 enters the internal cavity of the sealing plate 6 through the diversion cavity 93 and the diversion port 911. After the polyurethane foam enters the internal cavity of the sealing plate 6, it begins to expand. After the polyurethane foam expands, it contacts the inner wall of the airbag 85. Under the continuous expansion of the polyurethane foam, the polyurethane foam contacts and pushes the inner wall of the airbag 85, so that the degree of fit between the surface of the airbag 85 and the inner wall of the groove 30 is further improved, and the surface of the airbag 85 and the inner wall of the groove 30 are assisted to fit. At the same time, the polyurethane foam can be used for heat insulation and buffering to form a buffer insulation layer in the internal cavity of the sealing plate 6. When the polyurethane foam enters the sealing plate 6, the operator rotates the turntable 95 in the opposite direction. While the turntable 95 rotates, the transmission rod 94 drives the limit ring 96 to rotate in the opposite direction and reset. Then the operator releases the push plate 98, and the elastic telescopic rod 99 unloads the force and stretches out. While the elastic telescopic rod 99 stretches out, it drives the clamping column 97 to slide upward. After the clamping column 97 slides into place, the top surface of the clamping column 97 and the inner wall of the limit ring 96 are restored to the clamping state.

[0048] By providing a liquid storage barrel 91 and utilizing the heat insulating and cushioning properties of polyurethane foam, the airbag 85 is expanded and squeezed inside the sealing plate 6 to further ensure the fit between the airbag 85 and the inner wall of the groove 30. At the same time, the expanded polyurethane foam absorbs and cushions the energy of the sealing plate 6 when it is impacted.

[0049] like Figures 7 to 11As shown, the protection component 10 includes a protection cover 101, the bottom end of the protection cover 101 is installed on one side of the installation box 1, the cross-section of the protection cover 101 is designed to be an arc structure, the number of protection covers 101 is set to multiple groups, and the multiple groups of protection covers 101 are installed at equal angles on the side of the installation box 1, a mounting ring 102 is installed on the top of the protection cover 101, and a buffer plate 103 is installed on the inner wall of the protection cover 101. The cross-section of the buffer plate 103 is designed to be a polygonal structure, the material of the buffer plate 103 is set to be carbon fiber material, the number of buffer plates 103 is set to multiple groups, and the multiple groups of buffer plates 103 are connected to each other, and the multiple groups of buffer plates 103 are installed on the inner wall of the protection cover 101 in a honeycomb structure. The protection component 10 also includes a support plate 104, the support plate 104 is installed on the side of the installation box 1, the surface of the support plate 104 is set to a hollow structure, and the cross-section of the hollow structure on the surface of the support plate 104 is a triangular structure A prefabricated fracture groove 105 is provided on the surface of the support plate 104, and a protective plate 106 is installed at one end of the support plate 104. The material of the support plate 104 and the protective plate 106 is set to carbon fiber material. Openings 107 are equidistantly installed on the surface of the protective plate 106, and the cross-section of the opening 107 is set to a semicircular structure. The number of support plates 104 and protective plates 106 is set to multiple groups, and multiple groups of support plates 104 and protective plates 106 are arranged in an array on the side of the installation box 1. The protection component 10 also includes a bellows 108, the material of the bellows 108 is set to tin bronze, the top of the bellows 108 is installed at the bottom end of the installation box 1, and the surface of the bellows 108 is penetrated with an air inlet 109, and the bottom end of the bellows 108 is connected to an anti-collision plate 1010, and a spring 1011 is installed on the top of the anti-collision plate 1010, and the top of the spring 1011 is elastically connected to the bottom end of the installation box 1.

[0050] Subsequently, the operator rotates the protective cover 101, and the protective cover 101 slides while driving the buffer plate 103 on the inner wall to rotate synchronously. At the same time, the protective cover 101 rotates while driving the mounting ring 102 to approach and contact the positioning plate 31. The operator fixes the mounting ring 102 and the positioning plate 31 with bolts, and forms protection on the side of the contact part between the sealing plate 6 and the mounting box 1 through multiple sets of protective covers 101.

[0051] When the protective cover 101 is hit, the high-strength and lightweight characteristics of carbon fiber are utilized, and multiple groups of buffer plates 103 are installed and arranged in a honeycomb shape. The structural strength of the multiple groups of buffer plates 103 is ensured while the overall weight of the multiple groups of buffer plates 103 is greatly reduced. At the same time, the energy generated by the impact on the protective cover 101 is dispersed and absorbed to ensure the overall structural strength of the protective cover 101 when it is hit. At the same time, the multiple groups of protective covers 101 and buffer plates 103 form protection on the sides of the contact part between the sealing plate 6 and the installation box 1 to prevent the contact part between the sealing plate 6 and the installation box 1 from being directly hit and damaged or deformed.

[0052] At the same time, the rest of the side of the installation box 1 is protected by the cooperation between the support plate 104 and the protection plate 106. At the same time, semicircular openings 107 are equidistantly designed on the surface of the protection plate 106, so that the openings 107 on the two sets of adjacently installed protection plates 106 form circular holes. In daily use, the installation box 1 can dissipate heat for the battery pack 2 in the internal cavity of the installation box 1 through the heat dissipation holes 4 and the openings 107 installed on the side of the installation box 1. When the side of the installation box 1 is hit, the support plate 104 can be used to dissipate heat from the battery pack 2 in the internal cavity of the installation box 1. The support plate 104 and the protection plate 106 provide secondary buffering protection for the side of the installation box 1. At the same time, a local stress concentration point is formed on the surface of the support plate 104 through a specially designed prefabricated fracture groove 105. When the impact force is too large, the support plate 104 breaks along the direction of the prefabricated fracture groove 105. At the same time, under the action of gravity, the broken support plate 104 drives the protection plate 106 to fall from the side of the installation box 1, thereby preventing the support plate 104 and the protection plate 106 from causing secondary damage to the side of the installation box 1 after the impact.

[0053] After the anti-collision plate 1010 is hit, the force on the anti-collision plate 1010 drives the spring 1011 to contract, and at the same time, the anti-collision plate 1010 drives the bellows 108 to open, and the good elasticity and ability to withstand a certain degree of bending of tin bronze are utilized to avoid damage to the bellows 108 when the anti-collision plate 1010 is hit. At the same time, in normal use, when the bottom of the installation box 1 is waded through water, the drainage hole 5 at the bottom of the installation box 1 will drain the water entering the installation box 1, and cooperate with the air inlet 109 on the surface of the bellows 108 to drain and dry the water at the bottom of the installation box 1.

[0054] By providing a protective cover 101 and a buffer plate 103, utilizing the high-strength and lightweight characteristics of carbon fiber, and utilizing a plurality of buffer plates 103 to absorb and disperse the energy impact on the surface of the protective cover 101, the protective cover 101 and the buffer plate 103 form an impact protection layer on the side of the contact portion between the sealing plate 6 and the mounting box 1. At the same time, the support plate 104 and the protective plate 106 provide secondary protection for the battery box, thereby preventing the support plate 104 and the protective plate 106 from being damaged on the side of the mounting box 1 after being hit with a large force, and preventing the anti-collision plate 1010 from being damaged on the corrugated tube 108 when being hit. While protecting the bottom of the mounting box 1 through the anti-collision plate 1010, it is ensured that in a wading environment, water that has entered the bottom of the mounting box 1 can be discharged normally.

[0055] The working principle of the technical solution provided by the present invention is as follows:

[0056] After the operator installs the battery pack 2 and the fireproof board 3 in the installation box 1, the operator aligns the sealing plate 6 with the installation box 1 and presses it down to install it. While pressing down the sealing plate 6, the rotating column 81 is driven to approach and contact the annular protrusion 83. Under the continuous downward pressure of the sealing plate 6 and the action of the annular protrusion 83, the rotating column 81 is rotated. While the rotating column 81 rotates, it pushes the second connecting rod 88. While the second connecting rod 88 is subjected to force, it pushes the first connecting rod 87. Under the continuous rotation of the rotating column 81, the first connecting rod 87 is The connecting rod 87 pushes the bottom end of the piston plate 86 extending out of the air storage chamber 84 to slide upward. While sliding, the piston plate 86 squeezes the air in the air storage chamber 84 into the airbag 85, causing the airbag 85 to continue to expand. When the sealing plate 6 is pressed down into place, one end surface of the airbag 85 contacts the inner wall of the groove 30. At the same time, when the sealing plate 6 is pressed down into place, the bottom ends of the multiple groups of sealing aluminum nails 7 on the side of the sealing plate 6 contact the top of the installation box 1. Then the operator uses the multiple groups of sealing aluminum nails 7 to seal the sealing plate 6 and the installation box 1.

[0057] The push plate 98 is then pushed down by the operator, and the push plate 98 is pushed down while driving the clamping column 97 downward. The clamping column 97 is pushed down while driving the elastic telescopic rod 99 at the bottom to retract. At the same time, the top surface of the clamping column 97 is out of the clamping state with the inner wall of the limit ring 96. The operator rotates the turntable 95. The turntable 95 drives the transmission rod 94 at the bottom to rotate while driving the rotating ring 92 to rotate synchronously through the transmission rod 94. The rotation of the rotating ring 92 drives the internal diversion cavity 93 to rotate synchronously. While the diversion cavity 93 rotates, the inner wall of the diversion cavity 93 and the sealing ring 912 remain in close contact. Under the continuous rotation of the rotating ring 92, the bottom end hole of the diversion cavity 93 is rotated to align with the diversion port 911 on one side of the diversion base 910, so that the diversion cavity 93 and the diversion port 911 are connected, so that the polyurethane foam in the internal cavity of the liquid storage barrel 91 enters the internal cavity of the sealing plate 6 through the diversion cavity 93 and the diversion port 911. After the polyurethane foam enters the internal cavity of the sealing plate 6, it begins to expand. After the polyurethane foam expands, it contacts the inner wall of the airbag 85. Under the continuous expansion of the polyurethane foam, the polyurethane foam contacts and pushes the inner wall of the airbag 85, so that the degree of fit between the surface of the airbag 85 and the inner wall of the groove 30 is further improved, and the surface of the airbag 85 and the inner wall of the groove 30 are assisted to fit. At the same time, the polyurethane foam can be used for heat insulation and buffering to form a buffer insulation layer in the internal cavity of the sealing plate 6. When the polyurethane foam enters the sealing plate 6, the operator rotates the turntable 95 in the opposite direction. While the turntable 95 rotates, the transmission rod 94 drives the limit ring 96 to rotate in the opposite direction and reset. Then the operator releases the push plate 98, and the elastic telescopic rod 99 unloads the force and stretches out. While the elastic telescopic rod 99 stretches out, it drives the clamping column 97 to slide upward. After the clamping column 97 slides into place, the top surface of the clamping column 97 and the inner wall of the limit ring 96 are restored to the clamping state.

[0058] Subsequently, the operator rotates the protective cover 101, and the protective cover 101 slides while driving the buffer plate 103 on the inner wall to rotate synchronously. At the same time, the protective cover 101 rotates while driving the mounting ring 102 to approach and contact the positioning plate 31. The operator fixes the mounting ring 102 and the positioning plate 31 with bolts, and forms protection on the side of the contact part between the sealing plate 6 and the mounting box 1 through multiple sets of protective covers 101.

[0059] When the protective cover 101 is hit, the high-strength and lightweight characteristics of carbon fiber are utilized, and multiple groups of buffer plates 103 are installed and arranged in a honeycomb shape. The structural strength of the multiple groups of buffer plates 103 is ensured while the overall weight of the multiple groups of buffer plates 103 is greatly reduced. At the same time, the energy generated by the impact on the protective cover 101 is dispersed and absorbed to ensure the overall structural strength of the protective cover 101 when it is hit. At the same time, the multiple groups of protective covers 101 and buffer plates 103 form protection on the sides of the contact part between the sealing plate 6 and the installation box 1 to prevent the contact part between the sealing plate 6 and the installation box 1 from being directly hit and damaged or deformed.

[0060] At the same time, the rest of the side of the installation box 1 is protected by the cooperation between the support plate 104 and the protection plate 106. At the same time, semicircular openings 107 are equidistantly designed on the surface of the protection plate 106, so that the openings 107 on the two sets of adjacently installed protection plates 106 form circular holes. In daily use, the installation box 1 can dissipate heat for the battery pack 2 in the internal cavity of the installation box 1 through the heat dissipation holes 4 and the openings 107 installed on the side of the installation box 1. When the side of the installation box 1 is hit, the support plate 104 can be used to dissipate heat from the battery pack 2 in the internal cavity of the installation box 1. The support plate 104 and the protection plate 106 provide secondary buffering protection for the side of the installation box 1. At the same time, a local stress concentration point is formed on the surface of the support plate 104 through a specially designed prefabricated fracture groove 105. When the impact force is too large, the support plate 104 breaks along the direction of the prefabricated fracture groove 105. At the same time, under the action of gravity, the broken support plate 104 drives the protection plate 106 to fall from the side of the installation box 1, thereby preventing the support plate 104 and the protection plate 106 from causing secondary damage to the side of the installation box 1 after the impact.

[0061] After the anti-collision plate 1010 is hit, the force on the anti-collision plate 1010 drives the spring 1011 to contract, and at the same time, the anti-collision plate 1010 drives the bellows 108 to open, and the good elasticity and ability to withstand a certain degree of bending of tin bronze are utilized to avoid damage to the bellows 108 when the anti-collision plate 1010 is hit. At the same time, in normal use, when the bottom of the installation box 1 is waded through water, the drainage hole 5 at the bottom of the installation box 1 will drain the water entering the installation box 1, and cooperate with the air inlet 109 on the surface of the bellows 108 to drain and dry the water at the bottom of the installation box 1.

[0062] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A lightweight battery box with anti-corrosion function, comprising a mounting box, wherein a battery pack is mounted on the bottom of the inner wall of the mounting box, characterized in that: A fireproof board is installed on the upper part of the inner wall of the installation box, a slot is installed at the top edge of the inner wall of the installation box, a positioning plate is installed on the top of the installation box, a heat dissipation hole array is installed through the surface of the installation box, a drainage hole is installed through the bottom of the installation box, a sealing plate is installed on the top of the installation box, and a sealing aluminum nail is installed on one side of the sealing plate. The number of the sealing aluminum nails is set to multiple groups, and the multiple groups of sealing aluminum nails are arranged at equal angles on the side of the sealing plate, and the bottom ends of the sealing aluminum nails are in contact with the top of the installation box; It also includes a sealing component, the inner wall of the sealing plate is nested with the sealing component, and the sealing component is used to perform sealing between the inner wall of the installation box and the sealing plate; An extrusion assembly is installed on the top of the sealing plate, and the extrusion assembly is used to perform secondary extrusion sealing on the sealing assembly; A protection component is installed on the side and bottom of the installation box, and the protection component is used to protect the bottom of the installation box from collision; The extrusion assembly is located at the top of the sealing assembly, and the protection assembly is located at the bottom of the extrusion assembly; The sealing assembly includes a rotating column, which is mounted on the bottom end of the sealing plate. The cross-section of the rotating column is designed to be circular. A torsion spring is mounted on one side of the rotating column. The rotating column is elastically connected to the bottom end of the sealing plate through the torsion spring. One end of the rotating column contacts an annular protrusion, which is mounted on the inner wall of the mounting box. The sealing assembly also includes an air storage chamber, the bottom end of the air storage chamber is installed with a sealing plate, an air bag is connected to the top end of the air storage chamber, the surface of the air bag is in contact with the inner wall of the groove, the material of the air bag is set to nitrile rubber, a piston plate is installed in the inner cavity of the air storage chamber, the bottom end of the piston plate extending out of the air storage chamber is connected to a first connecting rod, the other end of the first connecting rod is connected to a second connecting rod, and the other end of the second connecting rod is connected to one side of the rotating column; The extrusion assembly includes a liquid storage barrel, which is installed on the top of the sealing plate. The internal cavity of the liquid storage barrel is filled with polyurethane foam. The bottom end of the inner wall of the liquid storage barrel is sleeved with a rotating ring. A guide cavity is installed through the rotating ring. The cross-section of the guide cavity is designed to be an "L"-shaped structure. A transmission rod is installed at the top of the rotating ring, a rotating disk is installed at the top of the transmission rod extending out of the liquid storage barrel, a limiting ring is installed on the outer surface of the upper part of the transmission rod, the inner wall of the limiting ring contacts a clamping column, a push plate is installed on one side of the bottom end of the clamping column, an elastic telescopic rod is installed at the bottom end of the clamping column, the elastic telescopic rod is installed at the top of the sealing plate, and the clamping column is elastically connected to the top of the sealing plate through the elastic telescopic rod; The inner wall of the rotating ring is sleeved with a guide base, which is installed on the top of the inner wall of the sealing plate. A guide port is installed on one side of the guide base. A sealing ring is installed on the surface of the guide base, and the surface of the sealing ring contacts the inner wall of the rotating ring.

2. The lightweight battery box with anti-corrosion function according to claim 1, characterized in that: The protection component includes a protection cover, the bottom end of which is installed on one side of the installation box, the cross-section of the protection cover is designed to be an arc structure, the number of the protection covers is set to multiple groups, and the multiple groups of protection covers are installed at equal angles on the side of the installation box, and a mounting ring is installed on the top of the protection cover.

3. The lightweight battery box with anti-corrosion function according to claim 2, characterized in that: A buffer plate is installed on the inner wall of the protective cover. The cross-section of the buffer plate is designed to be a polygonal structure. The material of the buffer plate is set to carbon fiber material. The number of the buffer plates is set to multiple groups. The multiple groups of buffer plates are interconnected and installed on the inner wall of the protective cover in a honeycomb structure.

4. The lightweight battery box with anti-corrosion function according to claim 3, characterized in that: The protection component also includes a support plate, which is installed on the side of the installation box. The surface of the support plate is set to a hollow structure, and the cross-section of the hollow structure on the surface of the support plate is a triangular structure. The surface of the support plate is provided with prefabricated grooves, and a protective plate is installed at one end of the support plate. The material of the support plate and the protective plate is set to carbon fiber material, and openings are equidistantly installed on the surface of the protective plate. The cross-section of the opening is set to a semicircular structure. The number of the support plates and the protective plates is set to multiple groups, and the multiple groups of support plates and protective plates are arranged in an array on the side of the installation box.

5. The lightweight battery box with anti-corrosion function according to claim 4, characterized in that: The protection component also includes a bellows, the material of the bellows is set to tin bronze, the top of the bellows is installed at the bottom of the installation box, the surface of the bellows is provided with an air inlet, the bottom of the bellows is connected to an anti-collision plate, the top of the anti-collision plate is installed with a spring, and the top of the spring is elastically connected to the bottom of the installation box.

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