An ultra-thin aluminum material for protecting automobile batteries

Abstract

The invention relates to an ultra-thin aluminum material for protecting automobile batteries, comprising a passive power unit, a traction strip and an impact spring. Penetrating heat dissipation grooves are arranged on the surfaces of both sides of a profile body, sawtooth groove pieces are installed on both sides of the profile body through shaft rods, an impact spring is installed on the inner wall of the profile body, an active constraint unit is installed on the bottom wall of the profile body, an interception plate is connected to the top of the active constraint unit, a passive power unit is installed on the inner side of the profile body, and a traction strip is connected to the surface of the sawtooth groove piece. On the basis of the active heat dissipation operation with a fixed heat dissipation efficiency achieved by the heat dissipation groove autonomously exchanging heat with the outside and increasing the self-heat dissipation area of ​​the profile body through the sawtooth groove piece, the impact spring is selectively released through the shielding constraint of the interception plate by the active constraint unit to provide impact kinetic energy for the passive power unit, thereby driving the sawtooth groove piece to self-deflect, and enhancing the heat dissipation efficiency on the basis of the active heat dissipation of the heat dissipation groove and the sawtooth groove itself.

Description

Technical Field

[0001] The invention relates to an ultra-thin aluminum material for protecting automobile batteries, and in particular to an ultra-thin aluminum material for protecting automobile batteries which can autonomously accelerate the heat dissipation rate and is applied in the field of ultra-thin aluminum profiles. Background Art

[0002] In electric vehicles, the weight of the power battery pack accounts for about 30% of the total vehicle mass. In order to achieve lightweight automotive batteries and ensure battery safety, aluminum profiles are commonly used to package electric vehicle batteries in the market.

[0003] In order to solve the problem of heat dissipation of automobile batteries, aluminum profile battery packs on the market adopt a design that opens heat dissipation grooves and adds serrated grooves on the surface of the battery pack to enhance heat dissipation, and have a certain market share.

[0004] The specification of Chinese patent CN202022211249.0 discloses an ultra-thin aluminum profile for a car battery box, including a profile body along a longitudinal structure, the profile body is formed by integral extrusion of metal aluminum, a rectangular cavity is formed inside the profile body along the longitudinal direction, the profile body includes a top plate, a left plate, a bottom plate, and a right plate connected end to end in sequence, the top surface and the bottom surface of the top plate are respectively horizontally level, the top surface and the bottom surface of the bottom plate are respectively horizontally level, and the right side surface of the left plate and the left side surface of the right plate are respectively vertically level. The advantage of the utility model is that the structure is simple, heat dissipation can be quickly achieved through two serrated grooves, and the heat dissipation effect is very obvious; the four sides of the rectangular cavity are level inside, which is convenient for placing the car battery box, and the top surface of the top plate is level with the bottom surface of the bottom plate, which is convenient for the superposition of multiple boxes.

[0005] In actual use, the heat dissipation area of ​​the serrated groove is fixed and the heat dissipation efficiency of the above patented design depends on the autonomous heat exchange of the airflow in the internal space of the aluminum profile, which makes it difficult to improve the heat dissipation efficiency to meet the high heat dissipation safety requirements of the battery.

[0006] Application Contents

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to solve the problem of low heat dissipation efficiency caused by the single heat dissipation efficiency mode and the reliance on active heat exchange in the prior art.

[0008] In order to solve the above problems, the present invention provides an ultra-thin aluminum material for protecting automobile batteries, including a profile body, both side surfaces of the profile body are provided with penetrating heat dissipation grooves, both sides of the profile body are provided with serrated groove pieces located below the heat dissipation grooves through shaft rods, the inner wall of the profile body is provided with an impact spring, the bottom wall of the profile body is provided with an active constraint unit, the top of the active constraint unit is connected with an intercepting plate, and one side surface of the intercepting plate is in extrusion contact with the tail end of the impact spring, a passive power unit is installed on the inner side of the profile body, and the passive power unit is located on the side of the intercepting plate away from the impact spring, the surface of the serrated groove piece is connected with a traction bar, and the tail end of the traction bar is connected to the surface of the passive power unit.

[0009] In the above-mentioned ultra-thin aluminum material for automobile battery protection, the active constraint unit is used to block the interception plate and selectively release the impact spring to provide impact kinetic energy for the passive power unit, thereby driving the serrated groove sheet to self-deflect, thereby enhancing the heat dissipation efficiency on the basis of the active heat dissipation of the heat dissipation groove and the serrated groove itself.

[0010] As a further improvement of the present application, the passive power unit includes a fixing plate fixedly mounted on the bottom wall of the profile body, a compression spring is connected to a surface of the fixing plate close to the heat dissipation groove, a sliding block is connected to the tail end of the compression spring, a roller is installed at the bottom of the sliding block, and the surface of the sliding block is connected to the tail end of the traction bar.

[0011] As a further improvement of the present application, the movable constraint unit includes a storage rod fixedly mounted on the bottom wall of the profile body, the interior of the storage rod is hollow, the interior of the storage rod is connected to a heat expansion strip, and the interior of the storage rod is slidably connected to a movable rod.

[0012] As a further improvement of the present application, a heat dissipation hole is provided through the upper end of the surface of the storage rod, and a constraint groove located on the outside of the heat expansion strip is installed inside the storage rod, and the length of the constraint groove is smaller than the vertical distance between the bottom end of the heat dissipation hole and the bottom end of the storage rod, and the heat expansion strip is a gas column strip made of elastic material.

[0013] As a further improvement of the present application, the two movable restraining units are arranged symmetrically about the impact spring, and the movable distance of the movable rod is greater than the height of the intercepting plate.

[0014] As a further improvement of the present application, the elastic force of the impact spring is greater than the elastic force of the compression spring, and the height value of the installation position of the impact spring is lower than the height value of the top position of the sliding block.

[0015] As a further improvement of the present application, the width of the sawtooth groove piece is smaller than the vertical distance between the lowest heat dissipation groove and the bottom end of the profile body, and the recessed part and the raised part of the sawtooth groove piece are designed for interlocking connection.

[0016] As another improvement of the present application, a support rod is connected to a surface of one side of the interception plate close to the impact spring, a moving magnetic piece is fixedly connected to the tail end of the support rod, and the moving magnetic piece is slidably connected to the inner wall of the profile body.

[0017] As another improved supplement of the present application, the surface of the interception plate close to the impact spring is coated with a magnetic layer A, and the surface of the impact spring is coated with a magnetic layer B. The magnetic layers A and B repel each other, and the magnetic layer B and the moving magnetic sheet attract each other.

[0018] In summary, the beneficial effects of this application are:

[0019] (1) On the basis of realizing active heat dissipation operation with fixed heat dissipation efficiency by autonomously exchanging heat with the outside through the heat dissipation groove and increasing the heat dissipation area of ​​the profile body through the sawtooth groove piece, the active constraint unit blocks the interception plate and selectively releases the impact spring to provide impact kinetic energy for the passive power unit, thereby driving the sawtooth groove piece to self-deflect, thereby enhancing the heat dissipation efficiency on the basis of active heat dissipation of the heat dissipation groove and the sawtooth groove itself;

[0020] (2) When the temperature inside the profile rises, the movable rod lifts the interception plate, causing the impact spring in the extruded state to extend and impact the sliding block. Then, with the cooperation of the compression spring and the fixed plate, the sliding block is able to reciprocate for a period of time. Then, under the action of the traction bar, the serrated groove sheet is driven to achieve a fanning effect, thereby enhancing the heat dissipation efficiency.

[0021] (3) In order to prevent the interception plate from remaining in a constant state of lifting after lifting once, which would limit the number of times the impact spring is released, after the heat expansion strip is lifted out of the top of the constraint groove, the heat dissipation efficiency of the heat expansion strip is enhanced under the action of the heat dissipation hole, and then it retracts, driving the movable rod and the interception plate to move downward, thereby achieving multiple interception and extrusion treatments on the impact spring;

[0022] (4) In order to strengthen the extrusion energy storage of the impact spring, after the interception plate falls, the impact spring is strengthened and compressed with the cooperation of the moving magnetic sheet and the magnetic layers A and B, so as to provide a greater impact effect to the sliding block after release. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram comparing the prior art and the present application in the first implementation mode of the present application;

[0024] Figure 2 This is the overall structural diagram of the first implementation mode of this application;

[0025] Figure 3 This is the first implementation method of this application Figure 2 A is an enlarged schematic diagram;

[0026] Figure 4A top view of the profile body of the first embodiment of the present application;

[0027] Figure 5 This is a schematic diagram of the state of the sawtooth slot sheet flipping and fanning in the first embodiment of the present application;

[0028] Figure 6 This is a schematic diagram of the state of the impact spring before and after the interception plate is lifted in the first embodiment of the present application;

[0029] Figure 7 This is an assembly diagram of the activity restraint unit of the first embodiment of the present application;

[0030] Figure 8 This is a schematic diagram of the state of the heat expansion strip after it is lifted out of the restraining groove in the first embodiment of the present application;

[0031] Fig. 9 A partial cross-sectional view of the second embodiment of the present application;

[0032] Fig.10 This is a schematic diagram of the state of the impact spring in the jacking state of the interception plate of the second embodiment of the present application;

[0033] Fig.11 This is a schematic diagram of the state of the impact spring when the interception plate of the second embodiment of the present application is in a sliding state;

[0034] Fig.12 This is a schematic diagram of the state of the impact spring when the interception plate of the third embodiment of the present application stops sliding down and is in a stable state.

[0035] Description of the numbers in the figure:

[0036] 1. Profile body; 2. Heat dissipation groove; 3. Sawtooth groove piece; 4. Passive power unit; 41. Fixed plate; 42. Compression spring; 43. Sliding block; 5. Traction strip; 6. Impact spring; 7. Movable restraint unit; 71. Movable rod; 72. Storage rod; 73. Heat dissipation hole; 74. Restraint groove; 75. Thermal expansion strip; 8. Interceptor plate; 81. Moving magnetic sheet. DETAILED DESCRIPTION

[0037] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0038] The first implementation method:

[0039] Figure 1-8An ultra-thin aluminum material for protecting automobile batteries is shown, including a profile body 1, both side surfaces of the profile body 1 are provided with penetrating heat dissipation grooves 2, both sides of the profile body 1 are provided with serrated groove pieces 3 located below the heat dissipation grooves 2 through shafts, the inner wall of the profile body 1 is provided with an impact spring 6, the bottom wall of the profile body 1 is provided with an active constraint unit 7, the top of the active constraint unit 7 is connected with an intercepting plate 8, and one side surface of the intercepting plate 8 is in extrusion contact with the tail end of the impact spring 6, a passive power unit 4 is installed on the inner side of the profile body 1, and the passive power unit 4 is located on the side of the intercepting plate 8 away from the impact spring 6, the surface of the serrated groove piece 3 is connected with a traction bar 5, and the tail end of the traction bar 5 is connected to the surface of the passive power unit 4.

[0040] Specifically, during the use of the prior art, the heat inside the profile body 1 is autonomously exchanged with the outside through the heat dissipation grooves 2, and at the same time, the heat dissipation area of ​​the profile body 1 is increased through the sawtooth groove sheet 3, thereby realizing active heat dissipation operation with a fixed heat dissipation efficiency;

[0041] In the present application, the temperature rise inside the profile body 1 causes the movable constraint unit 7 to move, thereby lifting the interception plate 8, so that the interception plate 8 that originally has an extrusion constraint effect on the impact spring 6 is offset from the impact spring 6, and the impact spring 6 releases the energy originally stored in the extrusion state, and impacts the passive power unit 4, so that the passive power unit 4 can achieve a brief reciprocating motion. Under the action of the traction bar 5, the serrated groove sheet 3 is pulled to make an arc-shaped deflection motion along the shaft as the center, thereby strengthening the heat exchange movement of the external gas of the profile body 1 through the heat dissipation groove 2, thereby improving the heat dissipation efficiency and providing corresponding safety protection for the automobile battery packaged inside the profile body 1.

[0042] The passive power unit 4 includes a fixing plate 41 fixedly mounted on the bottom wall of the profile body 1, a compression spring 42 is connected to a surface of the fixing plate 41 close to the heat dissipation groove 2, and a sliding block 43 is connected to the tail end of the compression spring 42, and a roller is installed at the bottom of the sliding block 43, and the surface of the sliding block 43 is connected to the tail end of the traction bar 5.

[0043] Specifically, the fixed plate 41 is fixedly installed. When the sliding block 43 is impacted, the compression spring 42 is compressed and shortened. When the compression spring 42 shrinks to the limit value, the sliding block 43 moves in the opposite direction under the action of elasticity, and stretches the compression spring 42. After stretching for a period of time, the compression spring 42 shrinks, driving the sliding block 43 to move closer to the fixed plate 41 again, so as to achieve reciprocating motion, providing traction for the arc motion of the sawtooth groove piece 3.

[0044] The design of the roller can reduce the kinetic energy loss of the passive power unit 4 during the above-mentioned movement process, thereby extending the single movement duration of the passive power unit 4 .

[0045] The movable restraining unit 7 includes a storage rod 72 fixedly mounted on the bottom wall of the profile body 1 . The interior of the storage rod 72 is hollow. A heat expansion strip 75 is connected to the interior of the storage rod 72 . The interior of the storage rod 72 is slidably connected to a movable rod 71 .

[0046] Specifically, affected by the temperature increase, the expansion of the thermal expansion strip 75 drives the movable rod 71 to rise, thereby providing corresponding power for the lifting of the intercepting plate 8.

[0047] A heat dissipation hole 73 is penetrated through the upper end of the surface of the storage rod 72, and a constraint groove 74 located on the outside of the thermal expansion strip 75 is installed inside the storage rod 72, and the length of the constraint groove 74 is smaller than the vertical distance between the bottom end of the heat dissipation hole 73 and the bottom end of the storage rod 72, and the thermal expansion strip 75 is an air column strip made of elastic material.

[0048] Specifically, in order to prevent the interception plate 8 from maintaining a constant lifting state after lifting once, which results in the impact spring 6 being released a limited number of times, so that the interception plate 8 can continue to squeeze and store energy on the impact spring 6, a heat dissipation hole 73 and a restraining groove 74 are designed;

[0049] During the expansion and lifting process of the thermal expansion strip 75, it is restricted by the constraint groove 74, and a uniaxial lifting treatment is performed in the constraint groove 74. After the lifting height of the thermal expansion strip 75 exceeds the top of the constraint groove 74, it is no longer restricted by the constraint groove 74. At this time, the top of the thermal expansion strip 75 can be expanded and the heat dissipation area is increased, and the temperature is cooled with the help of the heat dissipation hole 73. Then the thermal expansion strip 75 retracts, driving the interception plate 8 to move downward, squeezing and intercepting the impact spring 6 that is still moving outward, so that the impact spring 6 can store energy for the second time, and the sliding block 43 can be subjected to the next round of impact treatment.

[0050] The two movable restraining units 7 are arranged symmetrically with respect to the impact spring 6 , and the movable distance of the movable rod 71 is greater than the height of the intercepting plate 8 .

[0051] Specifically, the movable constraint unit 7 is located on both sides of the impact spring 6. When the movable rod 71 is lifted, the movement path of the impact spring 6 will not be blocked, so that the impact spring 6 can smoothly impact the sliding block 43. After the movable rod 71 is lifted, it can ensure that the lifting distance of the interception plate 8 exceeds the height of the interception plate 8, so that the interception plate 8 and the impact spring 6 can be fully separated.

[0052] The elastic force of the impact spring 6 is greater than the elastic force of the compression spring 42 , and the height value of the installation position of the impact spring 6 is lower than the height value of the top position of the sliding block 43 .

[0053] Specifically, the kinetic energy provided by the elastic force accumulated by the impact spring 6 in the squeezed state after being released is greater than the initial elastic force of the compression spring 42 itself, so that the kinetic energy indirectly transmitted by the impact spring 6 through the sliding block 43 can compress the compression spring 42, thereby driving the sliding block 43 to reciprocate;

[0054] The installation position and size design of the impact spring 6 and the sliding block 43 ensure that the projection of the impact spring 6 on the surface of the sliding block 43 is located inside the sliding block 43, so that when the impact spring 6 is released, it can accurately hit the surface of the sliding block 43, allowing the sliding block 43 to smoothly receive the kinetic energy from the impact spring 6.

[0055] The width of the sawtooth groove piece 3 is smaller than the vertical distance between the lowest heat dissipation groove 2 and the bottom end of the profile body 1, and the concave part and the convex part of the sawtooth groove piece 3 are designed to be engaged with each other.

[0056] Specifically, when the sawtooth groove sheet 3 is turned over and stood up, the top end is located below the lowest heat dissipation slot 2, so the effective air volume driven by the sawtooth groove sheet 3 to pass through the heat dissipation slot 2 when it is turned over will also increase, further enhancing the heat dissipation efficiency;

[0057] In addition, the recessed and raised interlocking design enables two adjacent profile bodies 1 to be smoothly interlocked and spliced ​​when spliced, and the interlocking design does not restrict the flipping movement of the serrated groove piece 3, thereby increasing the practical scope of the present application.

[0058] Second implementation method:

[0059] Figure 9-12 , wherein the components identical or corresponding to those in the first embodiment are designated by the corresponding reference numerals in the first embodiment, and for the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: a support rod is connected to a surface of one side of the interception plate 8 close to the impact spring 6, a moving magnetic sheet 81 is fixedly connected to the tail end of the support rod, and the moving magnetic sheet 81 is slidably connected to the inner wall of the profile body 1.

[0060] The surface of the interception plate 8 close to the impact spring 6 is coated with a magnetic layer A, and the surface of the impact spring 6 is coated with a magnetic layer B. The magnetic layer A and the magnetic layer B repel each other, and the magnetic layer B and the moving magnetic sheet 81 attract each other.

[0061] Specifically, when the intercepting plate 8 is lifted, the impact spring 6 loses its constraint and then extends to impact the sliding block 43. When the intercepting plate 8 slides down, the moving magnetic piece 81 moves downward under the drive of the support rod until the moving magnetic piece 81 is at the same height as the impact spring 6. Under the action of magnetic attraction, the shaking and contraction of the impact spring 6 is limited, so that the impact spring 6 is compressed and its length is equal to the support rod. Subsequently, under the action of the magnetic layer A on the surface of the intercepting plate 8, the impact spring 6 is further compressed by magnetic repulsion, so that the impact spring 6 can provide greater kinetic energy for the sliding block 43 when the lower wheel is released.

[0062] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An ultra-thin aluminum material for protecting automobile batteries, comprising a profile body (1), characterized in that: The two side surfaces of the profile body (1) are provided with penetrating heat dissipation grooves (2); the two sides of the profile body (1) are provided with sawtooth groove pieces (3) located below the heat dissipation grooves (2) through shaft rods; the inner wall of the profile body (1) is provided with an impact spring (6); the bottom wall of the profile body (1) is provided with an active constraint unit (7); the top of the active constraint unit (7) is connected to an interception plate (8), and one side surface of the interception plate (8) is in compression contact with the tail end of the impact spring (6); the inner side of the profile body (1) is provided with a passive power unit (4), and the passive power unit (4) is located on the side of the interception plate (8) away from the impact spring (6); the surface of the sawtooth groove piece (3) is connected to a traction bar (5), and the tail end of the traction bar (5) is connected to the surface of the passive power unit (4).

2. The ultra-thin aluminum material for automobile battery protection according to claim 1, characterized in that: The passive power unit (4) comprises a fixing plate (41) fixedly mounted on the bottom wall of the profile body (1); a compression spring (42) is connected to a surface of the fixing plate (41) on one side close to the heat dissipation groove (2); a sliding block (43) is connected to the tail end of the compression spring (42); a roller is mounted on the bottom of the sliding block (43); and a surface of the sliding block (43) is connected to the tail end of the traction bar (5).

3. The ultra-thin aluminum material for automobile battery protection according to claim 1, characterized in that: The movable restraining unit (7) comprises a storage rod (72) fixedly mounted on the bottom wall of the profile body (1); the interior of the storage rod (72) is hollow in design; the interior of the storage rod (72) is connected to a heat expansion strip (75); the interior of the storage rod (72) is slidably connected to a movable rod (71).

4. The ultra-thin aluminum material for automobile battery protection according to claim 3, characterized in that: A heat dissipation hole (73) is provided through the upper end of the surface of the storage rod (72); a restraining groove (74) located outside the heat expansion strip (75) is installed inside the storage rod (72); the length of the restraining groove (74) is smaller than the vertical distance between the bottom end of the heat dissipation hole (73) and the bottom end of the storage rod (72); and the heat expansion strip (75) is an air column strip made of elastic material.

5. The ultra-thin aluminum material for automobile battery protection according to claim 3, characterized in that: The two movable restraining units (7) are symmetrically arranged with respect to the impact spring (6), and the movable distance of the movable rod (71) is greater than the height of the intercepting plate (8).

6. The ultra-thin aluminum material for automobile battery protection according to claim 2, characterized in that: The elastic force of the impact spring (6) is greater than the elastic force of the compression spring (42), and the height value of the installation position of the impact spring (6) is lower than the height value of the top position of the sliding block (43).

7. The ultra-thin aluminum material for automobile battery protection according to claim 1, characterized in that: The width of the sawtooth groove piece (3) is smaller than the vertical distance between the lowest heat dissipation groove (2) and the bottom end of the profile body (1), and the concave part and the convex part of the sawtooth groove piece (3) are designed to be engaged and connected.

8. The ultra-thin aluminum material for automobile battery protection according to claim 1, characterized in that: A support rod is connected to a surface of one side of the interception plate (8) close to the impact spring (6), and a moving magnetic sheet (81) is fixedly connected to the tail end of the support rod, and the moving magnetic sheet (81) is slidably connected to the inner wall of the profile body (1).

9. The ultra-thin aluminum material for automobile battery protection according to claim 8, characterized in that: The surface of the interception plate (8) close to the impact spring (6) is coated with a magnetic layer A, and the surface of the impact spring (6) is coated with a magnetic layer B. The magnetic layer A and the magnetic layer B repel each other, and the magnetic layer B and the moving magnetic sheet (81) attract each other.

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