A lightweight power battery box with strong airtightness

Abstract

The present invention provides a lightweight power battery case with strong airtightness, belonging to the technical field of power battery cases. It comprises a lower case, an upper case is arranged on the top of the lower case, a plastic case cover is installed on the top of the upper case, a connector is installed on the front end of the lower case, a lower protective shell is installed on the bottom of the lower case, a plastic frame is arranged inside the lower case, and a cross bracket is installed on the inner wall of the plastic frame. The present invention can achieve a connection effect through a connector by arranging a connection adjustment component and a sealing adjustment component, reduce the use of bolts, achieve lightweight, simplify assembly time and cost, improve the ability to deal with emergencies, increase the speed of battery packs detaching from the carrier, and extend the safe time for personnel to escape. In addition, the complementary effect of the rubber sealing ring and the alloy solution sleeve helps to maintain the long-term airtightness of the power battery case and improve the overall structural strength and safety of the case.

Description

Technical Field

[0001] The present invention relates to the technical field of power battery boxes, and in particular to a lightweight power battery box with strong air tightness. Background Art

[0002] The power battery box is a key component that supports, fixes and surrounds the power battery system. It is mainly composed of upper cover, lower box, transition piece, guard plate and bolts. The power battery box is usually installed under the chassis of the vehicle body and bears the important task of protecting the power battery pack and electrical components. It can not only ensure that the battery pack is not interfered with by the outside world during normal operation, but also effectively protect the battery pack from damage during vehicle driving, especially in unexpected situations such as collision or extrusion, thereby ensuring the safety of the passengers.

[0003] In the production process of the existing power battery box, a large number of metal frames are selected for reinforcement, which increases the weight of the box. At the same time, under the condition of high weight, the box will affect the curb weight of the vehicle, increase the output power of the battery pack, increase the operating energy consumption, and reduce the service life. At the same time, too many metal bolt connections between the upper and lower shells increase the weight of the box, increase the assembly time, and increase the production cost. The functional effect is single. In the event of an emergency when the battery pack is heated and exploded, it is difficult to quickly separate the power battery box from the vehicle, reducing the safe time for people to escape. In addition, when the heavier box is bumped and hit, the inertial force is greater, which increases the degree of damage to the body frame and increases the safety hazard. In addition, due to thermal expansion and contraction, the rubber between the upper and lower boxes is easily aged, resulting in limited rubber airtightness, increasing the probability of gas leakage and liquid leakage, increasing the impact of the external environment on the battery, and reducing the reliability and stability of the power battery inside the box. Therefore, the present application provides a lightweight power battery box with strong airtightness to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a lightweight power battery box with strong airtightness to solve the problem that the existing power battery box, under high weight conditions, will affect the curb weight of the vehicle and increase the operating energy consumption. At the same time, too many metal bolt connections between the upper and lower shells increase the weight of the box and increase the assembly time. In the event of an emergency when the battery pack is heated and exploded, it is difficult to quickly separate the power battery box from the vehicle. Due to thermal expansion and contraction, rubber is prone to aging, resulting in limited rubber airtightness and an increased probability of air leakage and liquid leakage.

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

[0006] A lightweight power battery box with strong airtightness comprises a lower box, an upper box is arranged on the top of the lower box, a plastic box cover is installed on the top of the upper box, a connector is installed on the front end of the lower box, a lower protective shell is installed on the bottom of the lower box, a plastic frame is arranged inside the lower box, a horizontal bracket is installed on the inner wall of the plastic frame, a vertical bracket is installed on one side of the horizontal bracket, a battery module is installed on one side of the horizontal bracket, and a honeycomb plastic pad is arranged on the inner wall of the plastic frame; a connecting adjustment component, the connecting adjustment component is installed on the top of the lower box, and the connecting adjustment component is used to connect the lower box and the upper box; an expansion regulating component, the expansion regulating component is installed on the bottom of the connecting adjustment component, and the expansion regulating component is used to fill the gap between the lower box and the upper box; a sealed regulating component, the sealed regulating component is installed on the top of the lower box, and the sealed regulating component is used to close the gap between the lower box and the upper box; the connecting adjustment component is installed on the top of the expansion regulating component, and the expansion regulating component is installed on one end of the sealed regulating component.

[0007] Optionally, the connection adjustment component includes a cylindrical frame, a straight rod is installed on the top of the cylindrical frame, a connecting head is installed on the top of the straight rod, the connecting head is set to be a soft material, and a plurality of holes are opened on one side of the connecting head.

[0008] Optionally, a cylinder is installed on the top of the cylindrical frame, a push rod is inserted into the interior of the cylinder, and a disc is arranged at the bottom of the push rod.

[0009] Optionally, a spring is sleeved on the surface of the push rod, and the spring is arranged between the push rod and the cylinder. An oil cavity is installed at the bottom of the push rod, and the internal diameter of the oil cavity is consistent with the diameter of the disc at the bottom of the push rod.

[0010] Optionally, a sequence valve is installed at one end of the oil chamber, a liquid infusion tube is installed at one end of the sequence valve, a supporting conduit is installed at one end of the liquid infusion tube, and an expansion ring is provided on the surface of the cylindrical frame.

[0011] Optionally, the expansion regulating assembly includes a knob, the knob is mounted on the bottom of the lower box, a threaded column is mounted on the top of the knob, and a push block is provided on the top of the threaded column.

[0012] Optionally, a threaded sealing tube is threadedly connected to the surface of the threaded column, a directional tube is installed on the top of the threaded sealing tube, the directional tube is installed inside the oil cavity, and the liquid outlet of the directional tube is higher than the sequence valve.

[0013] Optionally, the sealed adjustment component includes a rubber sealing ring, which is installed on the top of the lower box body. An alloy solution sleeve is provided at one end of the rubber sealing ring. The common size of the rubber sealing ring and the alloy solution sleeve is consistent with the size of the bottom groove of the upper box body.

[0014] Optionally, a rotating shaft seat is installed at the bottom of the lower box body, a plastic rotating shaft is rotatably installed on one side of the rotating shaft seat, and a flip lock frame is rotatably connected to the surface of the plastic rotating shaft.

[0015] Optionally, a card slot seat is provided on the top of the lower box body, and a V-shaped bite frame is rotatably connected inside the card slot seat, and the V-shaped bite frame is connected to a lock buckle at the bottom of the flip lock frame.

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

[0017] In the above scheme, by setting a connection adjustment component and utilizing the cooperation between the connecting head, straight rod, cylindrical frame, cylinder, push rod, spring, oil chamber, sequence valve, infusion tube, support catheter and expansion ring, the power battery box adopts a plastic frame as the main body of the load-bearing body, has a lower density, reduces the overall mass of the box, improves the battery life and overall performance, and the plastic frame realizes a more complex structure, optimizes the layout and heat dissipation performance of the box, and at the same time, the lower box and the upper box are connected through the connecting head to achieve the connection effect, which reduces the investment in bolts, reduces the weight of the box, simplifies the assembly time and cost, and improves the ability to deal with emergencies.

[0018] By setting up an expansion regulating component and utilizing a knob, a threaded column, a push block, a directional tube and a threaded sealing tube, the capacity of the oil in the oil chamber can be changed by moving the push block. At the same time, when the oil capacity is changed, the expansion ring contracts and separates from the box body, thereby increasing the speed of internal inspection of the box body and increasing the speed at which the battery pack separates from the carrier in the face of an emergency, thereby increasing the safe time for personnel to escape, preventing the spread of fire and further harm to personnel, and facilitating emergency handling and reducing losses.

[0019] By setting up a sealed adjustment component, using a rubber sealing ring, an alloy solution sleeve, a shaft seat, a flip lock frame, a plastic shaft, a slot seat and a V-shaped bite frame, the rubber sealing ring can be closely fitted to the edge of the battery case to form an effective seal, and the plastic frame can be more easily integrated with sealing elements to improve the sealing effect. When the alloy solution tube shrinks and expands due to temperature changes, the sealing rubber ring can use its own elasticity to adapt to this change and maintain close contact with the alloy solution tube, thereby ensuring that the airtightness is not affected. This complementary effect helps to maintain the long-term airtightness of the power battery case. The locking between the flip lock frame and the V-shaped bite frame consolidates the sealing state between the lower case and the upper case, avoiding leakage of electrolyte and intrusion of external moisture and dust, improving the strength and safety of the overall structure of the case, and at the same time facilitating the replacement and adjustment of seals and improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the main three-dimensional structure of a lightweight power battery box with strong airtightness of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the lightweight power battery box with strong airtightness from another perspective of the present invention;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the positional relationship between the lower box body and the upper box body of the present invention;

[0024] Figure 4 This is an exploded view of the lightweight power battery box with strong airtightness of the present invention;

[0025] Figure 5 This is a three-dimensional structural schematic diagram of the positional relationship between the honeycomb plastic pad and the battery module of the present invention;

[0026] Figure 6 for Figure 5 A magnified view of middle;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the connection adjustment component of the present invention;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the threaded column of the present invention;

[0029] Fig. 9 for Figure 8 Enlarged view of middle B;

[0030] Fig.10It is a schematic diagram of the three-dimensional structure of the closed adjustment component of the present invention;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the card slot seat of the present invention.

[0032] Reference numerals:

[0033] 1. Lower box body; 2. Upper box body; 3. Plastic box cover; 4. Connector plug; 5. Lower protective shell; 6. Connection adjustment assembly; 61. Connector; 62. Straight rod; 63. Cylindrical frame; 64. Cylinder; 65. Push rod; 66. Spring; 67. Oil chamber; 68. Sequence valve; 69. Infusion tube; 610. Support catheter; 611. Expansion ring; 7. Expansion control assembly; 71. Knob; 72. Threaded column; 73. Push block; 74. Directional tube; 75. Threaded sealing tube; 8. Sealed adjustment assembly; 81. Rubber sealing ring; 82. Alloy solution casing; 83. Shaft seat; 84. Flip lock frame; 85. Plastic shaft; 86. Slot seat; 87. V-shaped bite frame; 9. Plastic frame; 10. Honeycomb plastic pad; 11. Battery module; 12. Vertical bracket; 13. Horizontal bracket.

[0034] 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

[0035] The following is a detailed description of a lightweight power battery box with strong airtightness provided by the present invention in conjunction 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.

[0036] 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).

[0037] 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.

[0038] 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.

[0039] 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.

[0040] like Figures 1 to 11 As shown, an embodiment of the present invention provides a lightweight power battery box with strong airtightness, including a lower box 1, an upper box 2 is arranged on the top of the lower box 1, a plastic box cover 3 is installed on the top of the upper box 2, a connector 4 is installed on the front end of the lower box 1, a lower protective shell 5 is installed on the bottom of the lower box 1, a plastic frame 9 is arranged inside the lower box 1, a horizontal bracket 13 is installed on the inner wall of the plastic frame 9, a vertical bracket 12 is installed on one side of the horizontal bracket 13, a battery module 11 is installed on one side of the horizontal bracket 13, and a honeycomb plastic pad 10 is arranged on the inner wall of the plastic frame 9; a connection adjustment component 6 , the connecting adjustment component 6 is installed at the top of the lower box body 1, and the connecting adjustment component 6 is used to connect the lower box body 1 and the upper box body 2; the expansion adjustment component 7, the expansion adjustment component 7 is installed at the bottom of the connecting adjustment component 6; the expansion adjustment component 7 is used to fill the gap between the lower box body 1 and the upper box body 2; the sealing adjustment component 8, the sealing adjustment component 8 is installed at the top of the lower box body 1, and the sealing adjustment component 8 is used to close the gap between the lower box body 1 and the upper box body 2; the connecting adjustment component 6 is installed at the top of the expansion adjustment component 7, and the expansion adjustment component 7 is installed at one end of the sealing adjustment component 8.

[0041] As an implementation method in this embodiment, Figures 4 to 9 As shown, the connection adjustment component 6 includes a cylindrical frame 63, a straight rod 62 is installed on the top of the cylindrical frame 63, a connecting head 61 is installed on the top of the straight rod 62, the connecting head 61 is set to be a soft material, and a plurality of holes are opened on one side of the connecting head 61, a cylinder 64 is installed on the top of the cylindrical frame 63, a push rod 65 is inserted into the inside of the cylinder 64, a disc is arranged at the bottom of the push rod 65, a spring 66 is sleeved on the surface of the push rod 65, and the spring 66 is arranged between the push rod 65 and the cylinder 64, and an oil cavity 67 is installed at the bottom of the push rod 65, and the internal diameter of the oil cavity 67 is the same as that of the cylinder 64. The disc at the bottom of the push rod 65 has the same diameter. A sequence valve 68 is installed at one end of the oil chamber 67. A liquid infusion tube 69 is installed at one end of the sequence valve 68. A support catheter 610 is installed at one end of the liquid infusion tube 69. An expansion ring 611 is provided on the surface of the cylindrical frame 63. When the hole groove opened at the edge of the upper box body 2 and the connector 61 are vertically corresponding to each other, the hole groove slowly covers the connector 61. When the connector 61 moves to the depth of the hole groove, the connector 61 is squeezed and deformed until it is completely moved to the depth of the hole groove and is consistent with the shape of the hole groove and the connector 61. The holes and grooves of the connecting head 61 are completely overlapped and stop. At this time, the protrusion inside the hole and the groove on the surface of the connecting head 61 are engaged and rubbed with each other, which increases the friction force and the grip. At the same time, the inner wall of the hole squeezes and moves the push rod 65 beside the straight rod 62. At this time, the push rod 65 moves downward inside the cylinder 64. When the push rod 65 moves, the top of the push rod 65 presses the spring 66 to slowly contract. During the contraction of the spring 66, the push rod 65 continues to move downward inside the cylinder 64. During the downward movement of the push rod 65, the bottom disk of the push rod 65 pushes The oil in the oil cavity 67 flows downward. When the oil in the oil cavity 67 flows downward, the oil flows into the interior of the infusion tube 69 through the sequence valve 68. At this time, multiple infusion tubes 69 simultaneously input the oil into the interior of the support conduit 610. While the support conduit 610 moves around, the expansion ring 611 on the outer surface of the cylindrical frame 63 is expanded. When the expansion ring 611 expands, the edge of the expansion ring 611 begins to fit tightly against the edge of the hole groove at the bottom of the upper box body 2 and is continuously filled. At this time, the lower box body 1 fits tightly against the upper box body 2 through the connecting adjustment component 6.

[0042] As an implementation method in this embodiment, Figures 7 to 9As shown, the expansion regulating assembly 7 includes a knob 71, which is mounted on the bottom of the lower box body 1, a threaded column 72 is mounted on the top of the knob 71, a push block 73 is arranged on the top of the threaded column 72, a threaded sealing tube 75 is threadedly connected to the surface of the threaded column 72, a directional tube 74 is mounted on the top of the threaded sealing tube 75, and the directional tube 74 is mounted inside the oil chamber 67. The liquid outlet of the directional tube 74 is higher than the sequence valve 68. When the expansion regulating assembly 7 starts to operate, the knob 71 in this area is adjusted according to the position of the gap. When the knob 71 is rotated counterclockwise, the threaded column 72 mounted on the top of the knob 71 starts to move downward. At this time, the movement of the threaded column 72 drives the push block 73 mounted on the top of the threaded column 72 to move downward. When the push block 73 moves downward, the bottom opening of the directional tube 74 blocked by the push block 73 is opened, and then the oil flows out from the bottom of the directional tube 74 from the inside of the oil chamber 67. At this time, the oil chamber The internal oil of 67 is reduced and the support conduit 610 is contracted. When the support conduit 610 is contracted, the expansion ring 611 begins to contract, thereby disengaging from the edge of the hole groove at the bottom of the upper box body 2. At this time, the lower box body 1 is quickly pushed toward the upper box body 2, and then the adjusting knob 71 is turned clockwise. When the knob 71 is turned clockwise, the threaded column 72 begins to slowly move upward inside the threaded sealing tube 75. When the threaded column 72 slowly moves upward, the push block 73 installed on the top of the threaded column 72 pushes the oil to the inside of the directional tube 74 again, and then the oil is transported to the inside of the oil cavity 67 through the outlet at the top of the directional tube 74, and then the oil flows to the inside of the infusion tube 69 through the sequence valve 68, and then is transported from the inside of the infusion tube 69 to the support conduit 610, and then the expansion ring 611 continues to expand and fills the hole groove at the bottom of the upper box body 2 to complete the connection with the lower box body 1.

[0043] As an implementation method in this embodiment, Figure 10 to Figure 11As shown, the airtight adjustment component 8 includes a rubber sealing ring 81, which is installed on the top of the lower box body 1. One end of the rubber sealing ring 81 is provided with an alloy solution sleeve 82. The common size of the rubber sealing ring 81 and the alloy solution sleeve 82 is consistent with the size of the bottom slot of the upper box body 2. A rotating shaft seat 83 is installed at the bottom of the lower box body 1. A plastic rotating shaft 85 is rotatably installed on one side of the rotating shaft seat 83. The surface of the plastic rotating shaft 85 is rotatably connected to a flip lock frame 84. A card slot seat 86 is provided on the top of the lower box body 1. The inside of the card slot seat 86 is rotatably connected to a V-shaped bite frame 87. The V-shaped bite frame 87 is connected to the lock buckle at the bottom of the flip lock frame 84. When the airtight adjustment component 8 starts to operate, the lower box body 1 is locked. The rubber sealing ring 81 and the alloy solution sleeve 82 installed on the top of the body 1 fit together with the grooved inner wall at the bottom of the upper box body 2. The long-term airtightness of the power battery box body is maintained by the complementary effect of the rubber sealing ring 81 and the alloy solution sleeve 82. Then, the flip lock frame 84 installed at the bottom of the lower box body 1 is rotated to the edge of the upper box body 2 on the shaft seat 83 through the plastic shaft 85. Then, after the flip lock frame 84 moves to the edge of the upper box body 2, the flip lock frame 84 flips the V-shaped bite frame 87 inside the slot seat 86 installed on the surface of the upper box body 2, and the flip lock frame 84 is tightly fitted with the V-shaped bite frame 87 to be fixed, and then the power battery box body connector 4 is connected to the connector to complete the use.

[0044] The working principle of the technical solution provided by the present invention is as follows:

[0045] When using this device, first check the integrity of the lower box body 1 and the upper box body 2, then place the battery module 11 into the space where the vertical bracket 12 and the horizontal bracket 13 in the plastic frame 9 intersect according to the design requirements, then install honeycomb plastic pads 10 on both sides of the battery module 11 to optimize the heat dissipation performance while blocking the heat and current transfer path, then install the lower protective shell 5 at the bottom of the lower box body 1, after the installation is completed, move the upper box body 2 to the top of the lower box body 1 and stack them together, and then install the plastic box cover 3 on the top of the upper box body 2.

[0046] When the upper box body 2 is connected and overlapped with the lower box body 1, the connection adjustment component 6 starts to operate. When the upper box body 2 moves downward to the top of the lower box body 1, at this time, the hole groove opened at the edge of the upper box body 2 and the connecting head 61 correspond vertically to each other, and then the hole groove slowly covers the connecting head 61. When the connecting head 61 moves deeper into the hole groove, the connecting head 61 is squeezed and deformed until it moves completely to the deep inside of the hole groove and completely overlaps with the hole groove inside the hole groove that is consistent with the shape of the connecting head 61 and stops. At this time, the protrusion inside the hole groove and the groove on the surface of the connecting head 61 are engaged and rubbed with each other, which increases the friction force and the grip. At the same time, the inner wall of the hole groove squeezes and moves the push rod 65 next to the straight rod 62. At this time, the push rod 65 moves downward inside the cylinder 64. When the push rod 65 moves, the push rod The top of 65 presses the spring 66 to slowly contract. During the contraction of the spring 66, the push rod 65 continues to move downward inside the cylinder 64. During the downward movement of the push rod 65, the bottom disc of the push rod 65 pushes the oil inside the oil cavity 67 to flow downward. When the oil inside the oil cavity 67 flows downward, the oil flows into the infusion pipe 69 through the sequence valve 68. At this time, multiple infusion pipes 69 simultaneously input the oil into the support conduit 610. While the support conduit 610 moves around, the expansion ring 611 on the outer surface of the cylindrical frame 63 is expanded. When the expansion ring 611 expands, the edge of the expansion ring 611 begins to fit tightly against the edge of the hole groove at the bottom of the upper box body 2 and is continuously filled. At this time, the lower box body 1 is tightly fitted with the upper box body 2 through the connection adjustment component 6.

[0047] When a gap is found between the lower box body 1 and the upper box body 2, adjustments are made according to the position of the gap. At this time, the expansion regulating component 7 starts to operate. When the expansion regulating component 7 starts to operate, the knob 71 in this area is adjusted according to the position of the gap. When the knob 71 is rotated counterclockwise, the threaded column 72 installed on the top of the knob 71 starts to move downward. At this time, the movement of the threaded column 72 drives the push block 73 installed on the top of the threaded column 72 to move downward. When the push block 73 moves downward, the bottom opening of the directional tube 74 blocked by the push block 73 is opened, and then the oil flows out from the inside of the oil chamber 67 from the bottom of the directional tube 74. At this time, the internal oil of the oil chamber 67 is reduced, and the support conduit 610 is contracted. When the support conduit 610 is contracted, the expansion ring 611 opens. The screw threaded rod 72 starts to shrink, thereby disengaging from the edge of the hole groove at the bottom of the upper box body 2. At this time, the lower box body 1 is quickly pushed toward the upper box body 2, and then the adjusting knob 71 is turned clockwise. When the knob 71 is turned clockwise, the threaded column 72 starts to move slowly upward inside the threaded sealing tube 75. When the threaded column 72 moves slowly upward, the push block 73 installed on the top of the threaded column 72 pushes the oil to the inside of the directional tube 74 again, and then the oil is transported to the inside of the oil cavity 67 through the outlet at the top of the directional tube 74, and then the oil flows to the inside of the infusion tube 69 through the sequence valve 68, and then is transported from the inside of the infusion tube 69 to the support conduit 610, and then the expansion ring 611 continues to expand and fills the hole groove at the bottom of the upper box body 2 to complete the connection with the lower box body 1.

[0048] When the upper box body 2 is tightly connected with the lower box body 1, the sealing adjustment component 8 starts to operate. At this time, the rubber sealing ring 81 and the alloy solution sleeve 82 installed on the top of the lower box body 1 are together in contact with the grooved inner wall at the bottom of the upper box body 2. The long-term airtightness of the power battery box body is maintained by the complementary effect of the rubber sealing ring 81 and the alloy solution sleeve 82. Then, the flip lock frame 84 installed at the bottom of the lower box body 1 is rotated to the edge of the upper box body 2 on the shaft seat 83 through the plastic shaft 85. Then, after the flip lock frame 84 moves to the edge of the upper box body 2, the flip lock frame 84 flips the V-shaped bite frame 87 inside the slot seat 86 installed on the surface of the upper box body 2, and the flip lock frame 84 is tightly fitted with the V-shaped bite frame 87 and fixed. Then, the power battery box body connector 4 is connected to the connector to complete the use.

[0049] 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.

[0050] 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 power battery box with strong airtightness, characterized in that: It comprises a lower box body, an upper box body is arranged on the top of the lower box body, a plastic box cover is installed on the top of the upper box body, a connector is installed on the front end of the lower box body, a lower protective shell is installed on the bottom of the lower box body, a plastic frame is arranged inside the lower box body, a horizontal bracket is installed on the inner wall of the plastic frame, a vertical bracket is installed on one side of the horizontal bracket, a battery module is installed on one side of the horizontal bracket, and a honeycomb plastic pad is arranged on the inner wall of the plastic frame; A connection adjustment component, which is installed on the top of the lower box body and is used to connect the lower box body and the upper box body; An expansion regulating component, which is installed at the bottom of the connection regulating component and is used to fill the gap between the lower box and the upper box; A sealing adjustment component, which is installed on the top of the lower box body and is used to close the gap between the lower box body and the upper box body; The connection adjustment component is installed on the top of the expansion adjustment component, and the expansion adjustment component is installed at one end of the closed adjustment component.

2. The airtight lightweight power battery box according to claim 1, characterized in that: The connection adjustment component comprises a cylindrical frame, a straight rod is installed on the top of the cylindrical frame, a connecting head is installed on the top of the straight rod, the connecting head is set to be a soft material, and a plurality of holes are opened on one side of the connecting head.

3. The airtight lightweight power battery box according to claim 2, characterized in that: A cylinder is installed on the top of the cylindrical frame, a push rod is inserted into the inside of the cylinder, and a disc is arranged at the bottom of the push rod.

4. The airtight lightweight power battery box according to claim 3 is characterized in that: A spring is sleeved on the surface of the push rod, and the spring is arranged between the push rod and the cylinder. An oil cavity is installed at the bottom of the push rod, and the internal diameter of the oil cavity is consistent with the diameter of the disc at the bottom of the push rod.

5. The airtight lightweight power battery box according to claim 4, characterized in that: A sequence valve is installed at one end of the oil cavity, a liquid infusion tube is installed at one end of the sequence valve, a supporting conduit is installed at one end of the liquid infusion tube, and an expansion ring is arranged on the surface of the cylindrical frame.

6. The airtight lightweight power battery box according to claim 5, characterized in that: The expansion regulating component comprises a knob, which is mounted on the bottom of the lower box body, a threaded column is mounted on the top of the knob, and a push block is arranged on the top of the threaded column.

7. The airtight lightweight power battery box according to claim 6, characterized in that: The surface of the threaded column is threadedly connected with a threaded sealing tube, the top of the threaded sealing tube is installed with a directional tube, the directional tube is installed inside the oil cavity, and the liquid outlet of the directional tube is higher than the sequence valve.

8. The airtight lightweight power battery box according to claim 7, characterized in that: The sealed adjustment component includes a rubber sealing ring, which is installed on the top of the lower box body. An alloy solution sleeve is provided at one end of the rubber sealing ring. The common size of the rubber sealing ring and the alloy solution sleeve is consistent with the size of the bottom slot of the upper box body.

9. The airtight lightweight power battery box according to claim 8, characterized in that: A rotating shaft seat is installed at the bottom of the lower box body, a plastic rotating shaft is rotatably installed on one side of the rotating shaft seat, and a flip lock frame is rotatably connected to the surface of the plastic rotating shaft.

10. The airtight lightweight power battery box according to claim 9, characterized in that: A card slot seat is arranged on the top of the lower box body, a V-shaped bite frame is rotatably connected inside the card slot seat, and the V-shaped bite frame is connected with a lock buckle at the bottom of the flip lock frame.

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