Water immersion detection device for new energy battery pack

Abstract

A soaking detection device for a new energy battery pack comprises a water storage tank body, a battery pack detection frame is arranged over the water storage tank body, and the height of the battery pack detection frame is adjustable; the battery pack detection frame comprises a bottom support frame, the bottom support frame comprises two opposite side frames, the upper end faces of the two side frames are correspondingly provided with positioning grooves capable of containing battery packs, at least two sets of supporting units are arranged on a bottom rod, and top rods of the supporting units are elastically connected with the bottom rod and can move up and down. The lowest point of the lower end of the ejector rod is lower than the bottom face of the side frame, and the highest point of the upper end of the ejector rod is higher than the bottom face of the positioning groove. When the bottom surface of the side frame of the bottom support frame is in contact with the bottom surface of the water storage tank body, the upper end of the ejector rod penetrates out of the bottom rod to eject the battery pack on the positioning groove upwards, the phenomenon that the battery pack cannot be in full contact with water is reduced, the positioning groove can play a role in limiting the battery pack, and even if the battery pack is located in the water storage tank body, the battery pack cannot be damaged. Therefore, the water immersion detection is relatively convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack water immersion detection, in particular to a new energy battery pack water immersion detection device. Background Art

[0002] New energy batteries, especially lithium-ion batteries for electric vehicles, require water immersion testing to ensure their water resistance. Water immersion testing is a key method for verifying the water resistance of battery systems. This testing ensures that batteries can continue to function properly despite water splashes or brief immersion, which is crucial for improving the safety and reliability of electric vehicles.

[0003] The existing immersion test device includes a gantry and a horizontal pressure plate within the gantry. An upwardly movable V-shaped clamping plate is bolted to the bottom of the horizontal pressure plate. The battery pack is placed on the V-shaped clamping plate, which is controlled to move and clamp the battery pack below the horizontal pressure plate. Simultaneously, an external lifting device moves the horizontal pressure plate and the V-shaped clamping plate downward, moving the battery pack into a container below. However, the upper and lower ends of the small battery pack are tightly attached to the horizontal pressure plate and the V-shaped clamping plate, respectively, preventing the upper and lower portions of the battery pack from fully contacting the water, affecting the accuracy of the immersion test data. Furthermore, the gantry takes up a large amount of space. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the present utility model provides a water immersion detection device for a new energy battery pack.

[0005] The technical solution of this utility model is as follows:

[0006] A new energy battery pack water immersion detection device includes a water storage tank body, a battery pack detection frame is provided directly above the water storage tank body, and the height of the battery pack detection frame is adjustable;

[0007] The battery pack detection frame includes a rectangular bottom support frame, which includes two opposite side frames. The upper end surfaces of the two side frames are provided with positioning grooves capable of placing the battery pack;

[0008] The two side frames are connected by at least two parallel bottom rods, the upper end surface of the bottom rod is not higher than the bottom surface of the positioning groove, and at least two groups of support units are provided on a single bottom rod along its length direction. A single support unit includes a top rod vertically penetrated on the bottom rod, the top rod is elastically connected to the bottom rod and can move up and down, the lowest point that the lower end of the top rod can reach is lower than the bottom surface of the side frame, and the highest point that the upper end can reach is higher than the bottom surface of the positioning groove.

[0009] The bottom support frame can drive the battery pack to move up and down in the water storage tank. When the bottom surface of the side frame of the bottom support frame contacts the bottom surface of the water storage tank, the top rod will compress the elastic part, and its upper end will pass through the bottom rod to lift the battery pack on the positioning groove upward, reducing the phenomenon that the outer surface of the battery pack cannot fully contact with water. The positioning groove can limit the battery pack. Even if the battery pack is located in the water storage tank, it will not separate from the bottom support frame, and water immersion detection is more convenient.

[0010] Regarding the installation position of the top rod, the bottom rod is provided with a vertical through hole, the top rod is passed through the through hole, and is connected to the through hole through a reset spring. The length of the top rod is greater than the length of the through hole.

[0011] The specific structure of the above-mentioned through hole is that the through hole includes a first through hole and a second through hole distributed up and down and coaxially. The inner diameter of the second through hole is larger than the inner diameter of the first through hole. The push rod is arranged in the first through hole. The lower end of the push rod is provided with a baffle that cooperates with the second through hole. A return spring is connected between the baffle and the second through hole. The return spring is a compression spring. The initial state of the push rod is that its lower end is located below the side frame, and the upper end is flush with or lower than the upper end surface of the bottom rod.

[0012] Regarding the specific structure of the bottom surface, the bottom surface includes a plane and an inclined surface arranged along the length direction of the side frame. The inclined surface is arranged away from the bottom rod and extends upward at an angle away from one side of the bottom surface. The bottom surface is used to directly contact the bottom surface of the battery pack.

[0013] The bottom rod and the side frame are arranged in such a manner that the bottom rod and the side frame are perpendicular to each other, and the support units on the two bottom rods are arranged symmetrically.

[0014] In order to be able to place battery packs of different sizes on the bottom support frame, there is no need to design separate brackets for battery packs of different sizes. The ends of the two side frames on the same side are connected by a connecting frame, and the bottom rod is retractable. One of the side frames is a movable side frame, which is movably connected to the connecting frame and can move along the length direction of the connecting frame. According to the size of the battery pack, the movable side frame is pushed outward or inward.

[0015] Regarding the specific structure of the bottom bar capable of extension and retraction, a single bottom bar includes a first bottom bar and a second bottom bar that are plug-connected, and each of the first bottom bar and the second bottom bar is provided with at least one supporting unit.

[0016] The connection structure between the movable side frame and the connecting frame is that both ends of the movable side frame are slidably connected in the connecting frame adjacent thereto and are connected to the connecting frame via connecting bolts.

[0017] Regarding the specific structure of the bottom support frame that can move up and down, a lifting mechanism is provided on opposite sides of the bottom support frame. The lifting mechanism is vertically arranged, with its upper end connected to the bottom support frame and the lower end connected to the outside of the water storage tank body.

[0018] In order to facilitate the control of the contact between the bottom surface of the side frame and the bottom surface of the water storage tank body, so that the push rod can lift the battery pack, a waterproof travel switch is provided on the outer side of one side frame, and a block that cooperates with the waterproof travel switch is provided on the bottom plate of the water storage tank body, and the upper end surface of the block is flush with the upper end surface of the bottom plate.

[0019] The beneficial effects of the present utility model are:

[0020] The small battery pack to be tested for water immersion is placed on the bottom support frame. The bottom support frame can be moved up and down in the vertical direction under the drive of the external lifting mechanism, driving the battery pack to move downward to the water surface in the water storage tank for water immersion testing. The initial state of the top rod is that the lower end is located below the side frame. When the lower end surfaces of the two side frames move to the point where the lower end of the top rod contacts the bottom surface of the water storage tank, the bottom support frame continues to move downward until the lower end surfaces of the side frames contact the bottom surface of the water storage tank. The top rod compresses the return spring, and the upper end of the top rod passes through the bottom rod. Its height is higher than the bottom surface of the positioning groove, pushing the battery pack on the positioning groove upward, so that the lower end surface of the battery pack is separated from the bottom rod, so that the outer surface of the battery pack is fully in contact with water, reducing the impact on the water immersion test data.

[0021] The two lifting mechanisms can be extended and retracted synchronously, making the height of the battery pack detection frame adjustable. The battery pack is controlled to move up and down by the lifting mechanism. Compared with the existing technology that requires the construction of a gantry frame, the utility model can greatly reduce the space occupied by the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached figure:

[0023] Figure 1 It is a structural diagram;

[0024] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0025] Figure 3 It is a top view;

[0026] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 5 for Figure 3 AA-direction cross-sectional structural diagram;

[0028] Figure 6 for Figure 5 The enlarged structural diagram at C in the middle;

[0029] The components represented by the reference numerals in the figure are:

[0030] 1. Water storage tank body; 11. Bottom surface; 2. Bottom support frame; 21. Side frame; 22. Connecting frame; 23. Positioning groove; 231. Flat surface; 232. Inclined surface; 3. Bottom rod; 31. First perforation; 32. Second perforation; 33. First bottom rod; 34. Second bottom rod; 341. Insert rod; 4. Top rod; 5. Return spring; 6. Connecting bolt; 7. Lifting mechanism; 8. Waterproof travel switch; 9. Block; 10. Baffle. DETAILED DESCRIPTION

[0031] See also Figure 1 and Figure 2 As shown, a new energy battery pack water immersion detection device includes a water storage tank 1, a battery pack detection frame positioned directly above the water storage tank 1, and lifting mechanisms 7 positioned on opposite sides of a base frame 2. The lifting mechanisms 7 can be hydraulic telescopic cylinders, for example. The lifting mechanisms 7 are arranged vertically, with their upper ends connected to the base frame 2 and their lower ends connected to the outside of the water storage tank 1. The two lifting mechanisms 7 can be synchronously extended and retracted, allowing the height of the battery pack detection frame to be adjustable. By controlling the vertical movement of the battery pack by the lifting mechanisms 7, the present invention significantly reduces the occupied floor space compared to the prior art, which requires the construction of a gantry.

[0032] See also Figure 3 and Figure 4 As shown, the battery pack detection frame includes a rectangular bottom support frame 2, which includes two opposite side frames 21. The upper end surfaces of the two side frames 21 are provided with positioning grooves 23 for placing the battery pack. The ends of the two side frames 21 on the same side are connected by a connecting frame 22. The bottom rod 3 is retractable. One of the side frames 21 is a movable side frame 21, which is movably connected to the connecting frame 22 and can be moved along the length direction of the connecting frame 22. According to the size of the battery pack, the movable side frame 21 is pushed outward or inward, and battery packs of different sizes can be placed on the bottom support frame 2, and there is no need to design separate brackets for battery packs of different sizes. The connection structure between the movable side frame 21 and the connecting frame 22 is that both ends of the movable side frame 21 are provided with sliding bars, and the connecting frame 22 is correspondingly provided with sliding grooves that cooperate with the sliding bars. The sliding bars are slid into the sliding grooves of the connecting frame 22 adjacent to it, and are connected to the connecting frame 22 through connecting bolts 6. The connecting bolts 6 are vertically arranged on the connecting frame 22 and are threadedly connected to the connecting frame 22. The connecting bolts 6 are downwardly passed through the sliding grooves and pressed against the sliding bars, which are used to tighten the sliding bars against the connecting frame 22.

[0033] Regarding the specific structure of the bottom surface 11 of the positioning groove 23, the bottom surface 11 includes a plane 231 and an inclined surface 232 arranged along the length direction of the side frame 21. The inclined surface 232 is arranged away from the bottom rod 3 and extends upward at an angle away from the side of the bottom surface 11. The bottom surface 11 is used to directly contact the bottom surface 11 of the battery pack. The two outward-inclined inclined surfaces 232 make the upper inner diameter of the positioning groove 23 larger, so that battery packs of different sizes can be placed. When the battery pack is lifted up in the water, the inclined surface 232 serves to block the side of the battery pack to prevent the battery pack from detaching from the bottom support frame 2.

[0034] See also Figure 5 and Figure 6 As shown, the two side frames 21 are connected by at least two parallel bottom rods 3, the bottom rods 3 are perpendicular to the side frames 21, and the support units on the two bottom rods 3 are symmetrically arranged, the upper end surface of the bottom rod 3 is not higher than the bottom surface 11 of the positioning groove 23, and a single bottom rod 3 is provided with at least two groups of support units along its length direction. A single support unit includes a top rod 4 vertically penetrated on the bottom rod 3, the top rod 4 is elastically connected to the bottom rod 3 and can move up and down, the lowest point that the lower end of the top rod 4 can reach is lower than the bottom surface 11 of the side frame 21, and the highest point that its upper end can reach is higher than the bottom surface 11 of the positioning groove 23.

[0035] Regarding the installation position of the top rod 4, the bottom rod 3 is provided with a vertical through hole, the top rod 4 is inserted into the through hole, and is connected to the through hole by a reset spring 5. The length of the top rod 4 is greater than the length of the through hole. The specific structure of the through hole is that the through hole includes a first through hole 31 and a second through hole 32 distributed up and down and coaxial. The inner diameter of the second through hole 32 is greater than the inner diameter of the first through hole 31. The top rod 4 is inserted into the first through hole 31. The lower end of the top rod 4 is provided with a baffle 10 that cooperates with the second through hole 32. A reset spring 5 is connected between the baffle 10 and the second through hole 32. The reset spring 5 is a compression spring. The initial state of the top rod 4 is that its lower end is located below the side frame 21, and the upper end is flush with or lower than the upper end surface of the bottom rod 3.

[0036] Regarding the specific structure of the bottom rod 3 that can be extended and retracted, a single bottom rod 3 includes a first bottom rod 33 and a second bottom rod 34 that are plug-connected. The first bottom rod 33 and the second bottom rod 34 are each provided with at least one supporting unit. The first bottom rod 33 is provided with a long groove along its length direction, and the second bottom rod 34 is provided with an insertion rod 341 that cooperates with the long groove near one end of the first bottom rod 33.

[0037] In order to facilitate the control of the contact between the bottom surface 11 of the side frame 21 and the bottom surface 11 of the water storage tank body 1, so that the top rod 4 lifts the battery pack, a waterproof limit switch 8 electrically connected to the lifting structure is provided on the outer side surface of a side frame 21, and a block 9 is provided on the bottom plate of the water storage tank body 1 to cooperate with the waterproof limit switch 8. The upper end surface of the block 9 is flush with the upper end surface of the bottom plate. The waterproof limit switch 8 has a rotating arm, and the outer end of the rotating arm is provided with a detection end. When the detection end moves downward and touches the upper end surface of the block 9, the waterproof limit switch 8 sends a signal to the external industrial computer, and the industrial computer controls the lifting mechanism 7 to stop moving downward. At this time, the upper end of the top rod 4 can pass through the bottom rod 3, lift the battery pack, and realize water immersion detection.

Claims

1. A water immersion detection device for a new energy battery pack, characterized in that: It comprises a water storage tank body (1), wherein a battery pack detection frame is provided directly above the water storage tank body (1), and the height of the battery pack detection frame is adjustable; The battery pack detection frame comprises a rectangular bottom support frame (2), the bottom support frame (2) comprises two opposite side frames (21), and the upper end surfaces of the two side frames (21) are provided with corresponding positioning grooves (23) capable of placing the battery pack; The two side frames (21) are connected by at least two parallel bottom rods (3), the upper end surface of the bottom rod (3) is not higher than the bottom surface (11) of the positioning groove (23), and at least two groups of support units are provided on a single bottom rod (3) along its length direction. The single support unit includes a top rod (4) vertically penetrated on the bottom rod (3), the top rod (4) is elastically connected to the bottom rod (3) and can move up and down, the lowest point that the lower end of the top rod (4) can reach is lower than the bottom surface (11) of the side frame (21), and the highest point that the upper end can reach is higher than the bottom surface (11) of the positioning groove (23).

2. The water immersion detection device for a new energy battery pack according to claim 1, characterized in that: The bottom rod (3) is provided with a vertical through hole, the top rod (4) is passed through the through hole, and the length of the top rod (4) is greater than the length of the through hole.

3. The water immersion detection device for a new energy battery pack according to claim 2, characterized in that: The through hole comprises a first through hole (31), and the push rod (4) is arranged in the first through hole (31) and is connected to the first through hole (31) via a reset spring (5).

4. The water immersion detection device for a new energy battery pack according to claim 1, characterized in that: The bottom surface (11) comprises a plane (231) and an inclined surface (232) arranged along the length direction of the side frame (21); the inclined surface (232) is arranged away from the bottom rod (3) and extends obliquely upward away from the side of the bottom surface (11).

5. The water immersion detection device for a new energy battery pack according to claim 1, characterized in that: The bottom bars (3) are perpendicular to the side frames (21), and the support units on the two bottom bars (3) are symmetrically arranged.

6. The water immersion detection device for a new energy battery pack according to claim 1, characterized in that: The ends of the two side frames (21) on the same side are connected by a connecting frame (22), the bottom rod (3) is retractable, and one of the side frames (21) is a movable side frame (21), which is movably connected to the connecting frame (22) and can move along the length direction of the connecting frame (22).

7. The water immersion detection device for a new energy battery pack according to claim 6, characterized in that: A single bottom bar (3) comprises a first bottom bar (33) and a second bottom bar (34) which are plug-connected, and at least one supporting unit is provided on each of the first bottom bar (33) and the second bottom bar (34).

8. The water immersion detection device for a new energy battery pack according to claim 6, characterized in that: Both ends of the movable side frame (21) are slidably connected to the adjacent connecting frame (22) and are connected to the connecting frame (22) via connecting bolts (6).

9. The water immersion detection device for a new energy battery pack according to claim 1, characterized in that: The bottom support frame (2) is provided with lifting mechanisms (7) on opposite sides. The lifting mechanisms (7) are arranged vertically, with their upper ends connected to the bottom support frame (2) and their lower ends connected to the outside of the water storage tank (1).

10. The water immersion detection device for a new energy battery pack according to claim 9, characterized in that: A waterproof travel switch (8) is provided on the outer side of one of the side frames (21), and a stopper (9) cooperating with the waterproof travel switch (8) is provided on the bottom plate of the water storage tank body (1), wherein the upper end surface of the stopper (9) is flush with the upper end surface of the bottom plate.

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