Power battery testing fixture

Abstract

The present disclosure relates to a power battery testing fixture, belonging to the technical field of power battery testing. The power battery testing fixture comprises a testing base and a plurality of positioning assemblies. The testing base is adapted to place a power battery. The plurality of positioning assemblies are installed on the testing base, and the plurality of positioning assemblies correspond one-to-one to the standard positions of a plurality of bolt holes on the side frame of the power battery. When the corresponding bolt hole is in the standard position, the positioning assembly can extend into the corresponding bolt hole. The power battery testing fixture of the present disclosure can detect the position of the bolt hole on the side frame of the power battery.

Description

Technical Field

[0001] This disclosure relates to the field of power battery testing technology, and in particular to a power battery inspection tool. Background Technology

[0002] The power battery is one of the core components of new energy vehicles. It typically requires bolts to connect its side frame to the vehicle. Therefore, the accuracy of the bolt hole positions on the power battery side frame affects the reliability of the battery system assembly. If there are dimensional deviations in the bolt hole positions, it can easily lead to difficulties in connecting the power battery to the vehicle or a poor connection. This not only causes assembly difficulties but also, even after assembly, may lead to safety hazards due to stress concentration in the components. Therefore, it is necessary to conduct off-line testing of the bolt hole positions on the power battery side frame before the power battery leaves the factory to ensure a safe and reliable connection between the power battery and the vehicle. Summary of the Invention

[0003] Therefore, this disclosure provides a power battery inspection tool capable of detecting the position of bolt holes on the side frame of a power battery. The technical solution is as follows:

[0004] The power battery inspection fixture includes an inspection base and multiple positioning components;

[0005] The detection base is suitable for placing a power battery;

[0006] Multiple positioning components are installed on the detection base, and the multiple positioning components correspond one-to-one with the standard positions of multiple bolt holes on the side frame of the power battery;

[0007] When the corresponding bolt hole is in the standard position, at least a portion of the positioning component can extend into the corresponding bolt hole.

[0008] In some possible implementations, the detection base includes a lower base and an upper base;

[0009] The lower base is adapted to house the power battery;

[0010] The upper base is connected to the lower base, so that the power battery is located between the upper base and the lower base;

[0011] Multiple positioning components are mounted on the upper base.

[0012] In some possible implementations, the plurality of first rollers are spaced apart on the upper surface of the lower base, located between the lower base and the upper base, and are adapted to house the power battery;

[0013] The rotation axes of the plurality of first rollers are parallel to each other, and the rotation axes of the plurality of first rollers all extend in the horizontal direction.

[0014] Preferably, the highest positions of the plurality of first rollers are all at the same height;

[0015] Preferably, when the power battery is placed on the plurality of first rollers, the plurality of second rollers are respectively located at opposite ends of the power battery along the rotation axis of the first rollers;

[0016] The rotation axes of the plurality of second rollers are parallel to each other, and the rotation axes of the plurality of first rollers all extend along the direction of gravity.

[0017] In some possible implementations, the detection base further includes a prepositioning element;

[0018] The prepositioning member is located at at least one end of the plurality of first rollers along a first direction, the highest position of the prepositioning member is higher than the highest position of the plurality of first rollers, and the lowest position of the prepositioning member is lower than the highest position of the plurality of first rollers.

[0019] Wherein, the first direction is parallel to the tangent at the highest position of the first roller.

[0020] In some possible implementations, the positioning component includes a fixing seat and a first positioning pin;

[0021] The fixing seat is installed on the detection base;

[0022] The first locating pin extends along a standard axis and is movable relative to the fixed base along the standard axis, so that when the corresponding bolt hole is in a standard position, at least a portion of the first locating pin can extend into or leave the corresponding bolt hole.

[0023] The standard axis is the axis when the corresponding bolt hole is in the standard position.

[0024] In some possible implementations, the power battery inspection fixture further includes a lifting assembly mounted on the inspection base, the lifting assembly being adapted to lift the power battery.

[0025] The standard axis extends along the direction of gravity, and when the power battery is placed on the detection base, the multiple positioning components are all located above the power battery.

[0026] The positioning component further includes a positioning block located on the lower surface of the fixing base, wherein when the power battery is in the standard position, the lower surface of the positioning block is in contact with the power battery.

[0027] In some possible implementations, the fixing seat is provided with a guide groove, a first limiting groove and a second limiting groove, and a limiting rod is connected to one side of the first positioning pin;

[0028] The guide groove cooperates with the first positioning pin to guide the first positioning pin to move along the standard axis;

[0029] The first limiting groove can cooperate with the limiting rod to guide the limiting rod to move along the standard axis;

[0030] The second limiting groove can cooperate with the limiting rod to guide the limiting rod to rotate around the standard axis;

[0031] The first limiting groove is connected to the second limiting groove. At the intersection of the second limiting groove and the first limiting groove, the first positioning pin can rotate around the standard axis and move along the standard axis.

[0032] Preferably, when the power battery is placed on the detection base, the minimum distance between the first limiting groove and the power battery is less than the minimum distance between the second limiting groove and the power battery.

[0033] In some possible implementations, the detection base is further provided with a plurality of pre-positioning holes, each of which corresponds one-to-one with a plurality of second positioning pins of the power battery, and at least a portion of the corresponding second positioning pin can extend into the pre-positioning hole.

[0034] In some possible implementations, the power battery inspection fixture further includes a fixing member, through which the positioning component and the inspection base are detachably connected.

[0035] In some possible implementations, the fixing member is rod-shaped, the positioning component is further provided with a first mounting hole, and the detection base is further provided with a plurality of second mounting holes;

[0036] The fastener can pass through the first mounting hole and the second mounting hole in sequence.

[0037] In the solution disclosed herein, the power battery is placed on a testing base, and the positions of the bolt holes on the side frame of the power battery can be detected using positioning components. When multiple positioning components can all be inserted into their respective bolt holes, the bolt holes are in standard positions without dimensional deviation; when at least one of the positioning components cannot be inserted into its corresponding bolt hole, the corresponding bolt hole has dimensional deviation and is not in a standard position. Thus, the positions of the bolt holes on the side frame of the power battery can be detected, and it can be determined whether there are dimensional deviations in the positions of the bolt holes on the side frame of the power battery. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of a power battery inspection fixture provided in an embodiment of this disclosure;

[0040] Figure 2 This is a schematic diagram of the structure of a lower base provided in an embodiment of this disclosure;

[0041] Figure 3 This is a side view of a structure for connecting an upper base and a lower base according to an embodiment of this disclosure;

[0042] Figure 4 This is a schematic diagram of the structure of an upper base provided in an embodiment of this disclosure;

[0043] Figure 5 This is a partial side view cross-sectional structural schematic diagram of a power battery inspection fixture provided in an embodiment of this disclosure;

[0044] Figure 6 This is a schematic diagram of the structure of a positioning component provided in an embodiment of this disclosure;

[0045] Figure 7 This is a cross-sectional structural diagram of a positioning component provided in an embodiment of this disclosure.

[0046] Explanation of reference numerals in the attached figures

[0047] 001, First Direction;

[0048] 1. Detection base; 11. Lower base; 111. Bracket; 12. Upper base; 121. Through hole; 13. First roller; 14. Pre-positioning component; 15. Pre-positioning hole; 16. Second mounting hole; 17. Second roller; 18. Internal detection pin;

[0049] 2. Positioning component; 21. Fixing base; 211. Guide groove; 212. First limiting groove; 213. Second limiting groove; 214. First mounting hole; 22. First positioning pin; 221. Limiting rod; 23. Positioning block;

[0050] 3. Lifting assembly;

[0051] 4. Power battery; 41. Bolt hole; 411. Standard shaft; 42. Second locating pin;

[0052] 5. Fasteners;

[0053] 6. Casters. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0055] This embodiment relates to a power battery inspection fixture, see reference. Figure 1 As shown, the power battery inspection fixture includes an inspection base 1 and multiple positioning components 2. The inspection base 1 is suitable for placing the power battery 4.

[0056] Continue to refer to Figure 1 As shown, multiple positioning components 2 are all installed on the detection base 1, and combined with Figure 5 As shown, the multiple positioning components 2 correspond one-to-one with the standard positions of the multiple bolt holes 41 on the side frame of the power battery 4. When the power battery 4 is located at the corresponding position on the detection base 1, the position of the bolt holes 41 on the power battery 4 can be detected by the positioning components 2.

[0057] Among them, such as Figure 5 As shown, when the corresponding bolt hole 41 is in the standard position, at least a portion of the positioning component 2 can extend into the corresponding bolt hole 41.

[0058] It should be noted that "bolt hole 41 in the standard position" means that the bolt hole 41 is in a position on the side frame of the power battery 4 without any dimensional deviation. Therefore, when the bolt hole 41 is not in the standard position, the positioning component 2 cannot extend into the corresponding bolt hole 41.

[0059] As described above, by placing the power battery on the detection base 1, the position of the bolt holes 41 on the side frame of the power battery 4 can be detected using the positioning components 2. When all the positioning components 2 can be inserted into the corresponding bolt holes 41, the position of the bolt holes 41 is within the standard position without any dimensional deviation; when at least one of the positioning components 2 cannot be inserted into the corresponding bolt hole 41, the corresponding bolt hole 41 has a dimensional deviation and is not in the standard position. Thus, the position of the bolt holes 41 on the side frame of the power battery 4 can be detected, and it can be determined whether there is a dimensional deviation in the position of the bolt holes 41 on the side frame of the power battery 4.

[0060] In some possible implementations, refer to Figure 1 As shown, the detection base 1 includes a lower base 11 and an upper base 12. The lower base 11 is suitable for placing the power battery 4. When the power battery 4 is located at the corresponding position on the lower base 11, the position of the bolt hole 41 on the power battery 4 can be detected by the positioning component 2.

[0061] refer to Figure 1 As shown, the upper base 12 is connected to the lower base 11, so that the power battery 4 is located between the upper base 12 and the lower base 11.

[0062] For example, the upper base 12 can be located above the lower base 11, and multiple brackets 111 can be arranged around the lower base 11. The opposite ends of the brackets 111 can be fixedly connected to the lower base 11 and the upper base 12 respectively, so that a gap can be created between the upper base 12 and the lower base 11 to accommodate the power battery 4. The brackets 111 can be connected to the lower base 11 and the upper base 12 respectively by bolts, snap-fit, or welding.

[0063] Continue to refer to Figure 1 and combined Figure 5 As shown, multiple positioning components 2 are mounted on the upper base 12. Therefore, the positioning components 2 can be located above the power battery 4, facilitating the observation of the test results.

[0064] In some possible implementations, refer to Figure 2 As shown, the detection base 1 also includes a plurality of first rollers 13. The plurality of first rollers 13 are spaced apart on the upper surface of the lower base 11, located between the lower base 11 and the upper base 12, and are adapted to hold the power battery 4. Thus, the power battery 4 placed thereon can be supported by the plurality of first rollers 13. For example, the plurality of first rollers 13 can be evenly spaced on the upper surface of the lower base 11.

[0065] The rotation axes of the multiple first rollers 13 are parallel to each other, and all the rotation axes of the multiple first rollers 13 extend in a horizontal direction. Therefore, the rotation directions of the multiple first rollers 13 can all be the same. When the power battery 4 placed on it is moved, the multiple first rollers 13 can rotate simultaneously, thereby guiding the power battery 4 to move in a direction perpendicular to the rotation axis of the first rollers 13, avoiding wear between the power battery 4 and the lower base 11 during movement, and preventing damage to the power battery 4.

[0066] As described above, after the power battery 4 is placed on the lower base 11, it can be easily moved to a suitable position on the lower base 11, which facilitates the testing of the power battery 4.

[0067] In some possible implementations, refer to Figure 3 As shown, the highest points of the multiple first rollers 13 are all at the same height. Therefore, the highest points of the multiple first rollers 13 can be located on the same horizontal plane, and the multiple first rollers 13 can all support the power battery 4, improving the stability of the support for the power battery 4 and preventing the power battery 4 from sliding on the first rollers 13 due to gravity.

[0068] In some possible implementations, refer to Figure 2 As shown, the detection base 1 also includes multiple second rollers 17. When the power battery 4 is placed on the multiple first rollers 13, the multiple second rollers 17 are respectively located on opposite sides of the power battery 4 along the rotation axis of the first rollers 13. Thus, the power battery 4 can be supported on both sides by the second rollers 17.

[0069] The rotation axes of the multiple second rollers 17 are parallel to each other, and the rotation axes of the multiple first rollers 13 all extend along the direction of gravity. In this way, when the power battery 4 is pushed to move on the first rollers 13, the second rollers 17 can rotate to guide the movement of the power battery 4, avoiding damage to the sides of the power battery 4 from collisions during movement.

[0070] In some possible implementations, refer to Figure 2 As shown, the detection base 1 also includes a prepositioning element 14. The prepositioning element 14 is located at at least one end of the plurality of first rollers 13 along a first direction 001.

[0071] For example, the prepositioning element 14 can be located at the first end or the second end of a plurality of first rollers 13 along the first direction 001. Wherein, as... Figure 2 and Figure 4 As shown, the prepositioning component 14 can be fixedly connected to the lower base 11, or the prepositioning component 14 can be fixedly connected to the upper base 12, or the prepositioning component 14 can be fixedly connected to both the upper base 12 and the lower base 11. The prepositioning component 14 and the lower base 11 or the upper base 12 can be integrally formed, or they can be two independent structural components fixedly connected together by bolts, welding or snap-fitting.

[0072] Furthermore, refer to Figure 2 As shown, the highest position of the prepositioning member 14 is higher than the highest position of the first roller 13, and the lowest position of the prepositioning member 14 is lower than the highest position of the first roller 13. In this way, after the power battery 4 is placed on the first roller 13, the side facing the prepositioning member 14 can abut against the prepositioning member 14.

[0073] In this configuration, the first direction 001 is parallel to the tangent at the highest position of the first roller 13. This allows the power battery 4 to move toward the pre-positioning member 14 until the power battery 4 comes into contact with the pre-positioning member 14, thus achieving pre-positioning of the power battery 4.

[0074] For example, the brackets 111 can be respectively disposed on opposite sides of the lower base 11 along the rotation axis of the first roller 13. The power battery 4 can be placed on the first roller 13 from the second end of the plurality of first rollers 13 along the first direction 001, so that it can move towards the prepositioning member 14 along the first direction 001.

[0075] In this way, the approximate positioning of the power battery 4 can be achieved, ensuring the accuracy of the position of the power battery 4 during testing, thereby improving the accuracy of the detection of the position of the bolt holes 41 on the power battery 4.

[0076] In some possible implementations, the prepositioning element 14 may be located at both ends of the plurality of first rollers 13 along the first direction 001. And at least one of the prepositioning elements 14 may be movably connected to the lower base 11 and / or the upper base 12, so that the prepositioning element 14 can switch between an avoidance position and an obstruction position.

[0077] In the avoidance position, the highest position of the prepositioning member 14 can be lower than the highest position of the first roller 13, or the lowest position of the prepositioning member 14 can be higher than the highest position of the power battery 4 when it is on the first roller 13, so as to avoid obstructing the movement of the power battery 4 in and out of the lower base 11 and the upper base 12 along the first direction 001, and to facilitate the placement or removal of the power battery 4.

[0078] like Figure 5 As shown, in the blocking position, the pre-positioning member 14 can be fixedly located on the path of the power battery 4 along the first direction 001 between the lower base 11 and the upper base 12. Therefore, when the power battery 4 enters between the lower base 11 and the upper base 12, the pre-positioning members 14 located at both ends of the plurality of first rollers 13 along the first direction 001 can position both sides of the power battery 4. Thus, the accuracy of pre-positioning of the power battery 4 can be improved during power battery 4 detection.

[0079] For example, one of the lower base 11 and the upper base 12 can be hinged to the first end of the prepositioning member 14, and the other can be snapped into the second end of the prepositioning member 14. Thus, the prepositioning member 14 can be fixed by snapping, and after the snapping is removed, the prepositioning member 14 can be rotated to switch between an avoidance position and an obstruction position.

[0080] In some possible implementations, refer to Figure 5 As shown, the positioning component 2 includes a fixed base 21 and a first positioning pin 22. The fixed base 21 is mounted on the detection base 1. For example, the fixed base 21 can be fixedly connected to the upper base 12 by bolts, snap-fit, or welding.

[0081] refer to Figure 6 and Figure 7As shown, the first locating pin 22 extends along the standard axis 411 and is movable relative to the fixing seat 21 along the standard axis 411, so that at least a portion of the first locating pin 22 can extend into or leave the corresponding bolt hole 41 when the corresponding bolt hole 41 is in the standard position. For example, the fixing seat 21 may be provided with a guide groove 211, along which the first locating pin 22 can move. The standard axis 411 is the axis when the corresponding bolt hole 41 is in the standard position.

[0082] Therefore, it can be determined whether the corresponding bolt hole 41 is in the standard position by whether the first positioning pin 22 can be inserted into the corresponding bolt hole 41.

[0083] For example, the standard axis 411 can extend vertically, and the first locating pin 22 can move up and down. When the corresponding bolt hole 41 is in the standard position, the corresponding bolt hole 41 is located directly below the first locating pin 22, so that the lower end of the first locating pin 22 can extend into or leave the corresponding bolt hole 41. When the corresponding bolt hole 41 is not in the standard position, the lower end of the first locating pin 22 cannot be aligned with the corresponding bolt hole 41, and its downward movement will be obstructed, thus preventing it from extending into the corresponding bolt hole 41.

[0084] In some possible implementations, refer to Figure 2 As shown, the power battery inspection fixture also includes a lifting assembly 3, which is mounted on the inspection base 1 and is adapted to lift the power battery 4.

[0085] For example, the lifting assembly 3 may include multiple cylinders extending along the direction of gravity, which may be spaced apart on the upper surface of the lower base 11. The fixed ends of the cylinders may be fixedly connected to the lower base 11, and after the power battery 4 is positioned on the first roller 13 and the overall pre-positioning of the power battery 4 is completed, the movable ends of the multiple cylinders may move upward simultaneously to lift the power battery 4. After the detection is completed, the movable ends of the multiple cylinders may descend simultaneously, causing the power battery 4 to fall.

[0086] refer to Figure 5 As shown, the standard axis 411 extends along the direction of gravity, and when the power battery 4 is placed on the detection base 1, multiple positioning components 2 are located above the power battery 4. Therefore, when the power battery 4 rises, it can approach the positioning components 2.

[0087] refer to Figure 6As shown, the positioning component 2 also includes a positioning block 23, which is located on the lower surface of the fixing base 21. For example, the positioning block 23 can be plate-shaped, and a through hole can be provided in the middle of the positioning block 23 to avoid the first positioning pin 22 so that the lower end of the first positioning pin 22 can pass through the corresponding through hole. In this way, when the bolt hole 41 is in the standard position, the lower surface of the positioning block 23 can abut against the side frame of the power battery 4.

[0088] When the power battery 4 is in the standard position, the lower surface of the positioning block 23 is in contact with the power battery 4. It should be noted that the power battery 4 being in the standard position means that when the power battery 4 is connected to the vehicle, the upper surface of the side frame can be in contact with the corresponding position on the vehicle, with no gap or only a very small gap, to ensure the stability of the connection between the power battery 4 and the vehicle.

[0089] Therefore, the upper surface of the side frame where the bolt hole 41 is located can be inspected. When the lower end of the first positioning pin 22 extends into the corresponding bolt hole 41, if the lower surface of the positioning block 23 can fit with the upper surface of the side frame, the power battery 4 is in the standard position and a stable connection can be achieved between the power battery 4 and the vehicle; if the lower surface of the positioning block 23 cannot fit with the upper surface of the side frame and there is a gap, the power battery 4 is not in the standard position and a stable connection between the power battery 4 and the vehicle is difficult to achieve.

[0090] In some possible implementations, refer to Figure 6 and combined Figure 7 As shown, the fixed base 21 is provided with a guide groove 211, a first limiting groove 212, and a second limiting groove 213. A limiting rod 221 is connected to one side of the first positioning pin 22. For example, the limiting rod 221 and the first positioning pin 22 can be integrally formed, or they can be two independent structural parts that are fixedly connected together by welding, snap-fitting, or other methods.

[0091] refer to Figure 7 As shown, the guide groove 211 cooperates with the first locating pin 22 to guide the first locating pin 22 to move along the standard axis 411. For example, the first locating pin 22 and the guide groove 211 can slide relative to each other along the standard axis 411.

[0092] The first limiting groove 212 can cooperate with the limiting rod 221 to guide the limiting rod 221 to move along the standard axis 411. The second limiting groove 213 can cooperate with the limiting rod 221 to guide the limiting rod 221 to rotate around the standard axis 411. For example, the part of the first locating pin 22 that cooperates with the guide groove 211 can be cylindrical, so that the first locating pin 22 can also rotate in the guide groove 211.

[0093] The first limiting groove 212 is connected to the second limiting groove 213. At the intersection of the second limiting groove 213 and the first limiting groove 212, the first positioning pin 22 can rotate around the standard axis 411 and can move along the standard axis 411.

[0094] In this way, the first limiting groove 212 can guide the limiting rod 221 to move to the intersection of the second limiting groove 213 and the first limiting groove 212. At the same time, the limiting rod 221 can be moved into the second limiting groove 213 by rotating the first positioning pin 22. Since the second limiting groove 213 is used to guide the limiting rod 221 to rotate around the standard axis 411, when the limiting rod 221 is located in the second limiting groove 213 but not at the intersection of the second limiting groove 213 and the first limiting groove 212, the limiting rod 221 cannot move along the standard axis 411, thereby restricting the movement of the first positioning pin 22 along the standard axis 411.

[0095] In some possible implementations, when the power battery 4 is placed on the detection base 1, the minimum distance between the first limiting groove 212 and the power battery 4 is less than the minimum distance between the second limiting groove 213 and the power battery 4.

[0096] Combination Figure 5 and Figure 7 As shown, since the positioning component 2 is located above the power battery 4, the position of the first positioning pin 22 when it is in the second limiting groove 213 is higher than the position of the first positioning pin 22 when the limiting rod 221 is in the first limiting groove 212. Therefore, when there is no need to inspect the power battery 4, the first positioning pin 22 can be kept in a higher position by placing it in the second limiting groove 213, thus not obstructing the movement of the power battery 4 on the first roller 13. Simultaneously, when it is necessary to inspect the position of the bolt hole 41, the first positioning pin 22 can be moved into the first limiting groove 212, and gravity can be used to allow the first positioning pin 22 to fall freely until its lower end enters the corresponding bolt hole 41, or it is blocked by the edge of the bolt hole 41 and cannot enter it.

[0097] In some possible implementations, the detection base 1 is also provided with a plurality of prepositioning holes 15, which correspond one-to-one with a plurality of second positioning pins 42 of the power battery 4, and at least a portion of the corresponding second positioning pins 42 can extend into the prepositioning holes 15.

[0098] For example Figure 5 As shown, the prepositioning hole 15 can be set at the lower end of a portion of the first positioning pins 22. This portion of the first positioning pins 22 can correspond one-to-one with a plurality of second positioning pins 42 of the power battery 4. The upper end of the second positioning pin 42 can extend into the corresponding prepositioning hole 15.

[0099] When testing the power battery 4, since the top of the second positioning pin 42 can generally protrude from the edge of the power battery 4, while the bolt hole 41 is recessed into the edge of the power battery 4, the corresponding second positioning pin 42 can be inserted into the pre-positioning hole 15 first to achieve pre-positioning, and then the positioning component 2 can be inserted into the corresponding bolt hole 41 to detect the position of the bolt hole 41, which helps to improve the efficiency of testing.

[0100] For example, when the power battery 4 is raised by the lifting assembly 3, the corresponding second positioning pin 42 can first extend into the pre-positioning hole 15 to achieve pre-positioning. Then, the power battery 4 continues to rise, allowing the bolt hole 41 to move closer to the corresponding first positioning pin 22, until the power battery 4 moves to its highest position. If the first positioning pin 22 is not lifted, it indicates that the lower end of the first positioning pin 22 has entered the corresponding bolt hole 41, and there is no dimensional deviation in the position of the corresponding bolt hole 41; if the first positioning pin 22 is lifted, it indicates that the lower end of the first positioning pin 22 has failed to enter the corresponding bolt hole 41, and there is a dimensional deviation in the position of the corresponding bolt hole 41.

[0101] In some possible implementations, refer to Figure 6 As shown, the power battery inspection fixture also includes a fixing member 5, and the positioning component 2 and the inspection base 1 are detachably connected through the fixing member 5. Therefore, a corresponding number and position of positioning components 2 can be installed according to the number and position of the bolt holes 41 on the power battery 4, allowing for the inspection of different power batteries 4.

[0102] In some possible implementations, refer to Figure 6 As shown, the fixing member 5 is rod-shaped. The positioning assembly 2 is also provided with a first mounting hole 214. Figure 4 As shown, the detection base 1 is also provided with a plurality of second mounting holes 16. For example, the first mounting hole 214 can be provided on the fixed base 21, and the second mounting holes 16 can be provided on the upper base 12. The fastener 5 can pass through the first mounting hole 214 and the second mounting hole 16 in sequence.

[0103] For example, the fastener 5 can be a bolt. The bolt nut abuts against the fixing seat 21, and the second end of the bolt passes through the first mounting hole 214 and the second mounting hole 16 in sequence. The nut is then screwed onto the second end of the bolt and abuts against the upper base 12. Thus, the fixing seat 21 is fixedly connected to the upper base 12 by the bolt and nut.

[0104] In another example, the fastener 4 can be a pin with a pin cap at the first end that abuts against the fixing seat 21, and the second end of the pin passing through the first mounting hole 214 and the second mounting hole 16 in sequence and being riveted to the upper base 12.

[0105] In another example, the fastener 4 can be a screw with a screw cap at the first end that abuts against the fixing seat 21, and the second end of the screw passing through the first mounting hole 214 and screwed into the second mounting hole 16, wherein the second mounting hole 16 is a screw hole.

[0106] In some possible implementations, refer to Figure 1 As shown, the power battery inspection fixture also includes multiple casters 6. For example, the number of casters 6 can include three, four, five, or six. These casters 6 can be installed around the bottom of the inspection base 1. For example, the multiple casters 6 can be installed around the bottom of the lower base 11. This facilitates the movement of the power battery inspection fixture.

[0107] In some possible implementations, refer to Figure 4 As shown, the power battery inspection fixture also includes multiple internal inspection pins 18, and the upper base 12 is provided with multiple through holes 121, and as shown... Figure 5 As shown, the through hole 121 corresponds one-to-one with the threaded hole 41 on the inner side of the power battery 4 frame, allowing the internal detection pin 18 to pass through the through hole 121 and extend into the corresponding threaded hole 41. Therefore, the position of the threaded hole 41 on the inner side of the power battery 4 frame can be detected.

[0108] For example, the through hole 121 can be through from top to bottom. When there is no deviation in the position of the threaded hole 41 of the power battery 4, the internal detection pin 18 can pass through the through hole 121 from top to bottom and extend into the corresponding threaded hole 41.

[0109] In this embodiment, the power battery is placed on the detection base 1, and the position of the bolt holes 41 on the side frame of the power battery 4 can be detected by the positioning components 2. When all the positioning components 2 can be inserted into the corresponding bolt holes 41, the position of the bolt holes 41 is in a standard position without dimensional deviation; when at least one of the positioning components 2 cannot be inserted into the corresponding bolt hole 41, the corresponding bolt hole 41 has a dimensional deviation and is not in a standard position. Thus, the position of the bolt holes 41 on the side frame of the power battery 4 can be detected, and it can be determined whether there is a dimensional deviation in the position of the bolt holes 41 on the side frame of the power battery 4.

[0110] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0111] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0112] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0113] The above are merely embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A power battery inspection tool, characterized in that, The power battery inspection fixture includes an inspection base (1) and multiple positioning components (2); The detection base (1) includes a lower base (11), an upper base (12), and a plurality of first rollers (13); The plurality of first rollers (13) are spaced apart on the upper surface of the lower base (11), located between the lower base (11) and the upper base (12), and are suitable for placing the power battery (4). Multiple positioning components (2) are installed on the upper base (12), and the multiple positioning components (2) correspond one-to-one with the standard positions of multiple bolt holes (41) on the side frame of the power battery (4); The positioning component (2) includes a fixed base (21) and a first positioning pin (22); The fixed base (21) is provided with a first limiting groove (212) and a second limiting groove (213). The first limiting groove (212) and the second limiting groove (213) are connected. When the power battery (4) is placed on the detection base (1), the minimum distance between the first limiting groove (212) and the power battery (4) is less than the minimum distance between the second limiting groove (213) and the power battery (4). One side of the first positioning pin (22) is connected to a limiting rod (221), which can move along the first limiting groove (212) and the second limiting groove (213); When the corresponding bolt hole (41) is in the standard position, at least a portion of the positioning component (2) can extend into the corresponding bolt hole (41).

2. The power battery inspection fixture according to claim 1, characterized in that, The lower base (11) is adapted to place the power battery (4); The upper base (12) is connected to the lower base (11), so that the power battery (4) is located between the upper base (12) and the lower base (11).

3. The power battery inspection fixture according to claim 2, characterized in that, The rotation axes of the plurality of first rollers (13) are parallel to each other, and the rotation axes of the plurality of first rollers (13) all extend in the horizontal direction.

4. The power battery inspection fixture according to claim 1, characterized in that, The highest positions of the multiple first rollers (13) are all at the same height.

5. The power battery inspection fixture according to claim 1, characterized in that, The detection base (1) also includes a plurality of second rollers (17). When the power battery (4) is placed on the plurality of first rollers (13), the plurality of second rollers (17) are respectively located at opposite ends of the power battery (4) along the rotation axis of the first rollers (13). The rotation axes of the plurality of second rollers (17) are parallel to each other, and the rotation axes of the plurality of second rollers (17) all extend in the direction of gravity.

6. The power battery inspection fixture according to claim 1, characterized in that, The detection base (1) also includes at least one prepositioning element (14). At least one of the prepositioning elements (14) is located at at least one end of the plurality of first rollers (13) along a first direction (001), the highest position of the prepositioning element (14) is higher than the highest position of the plurality of first rollers (13), and the lowest position of the prepositioning element (14) is lower than the highest position of the plurality of first rollers (13). Wherein, the first direction (001) is parallel to the tangent at the highest position of the first roller (13).

7. The power battery inspection fixture according to claim 1, characterized in that, The fixing seat (21) is installed on the detection base (1); The first locating pin (22) extends along the standard axis (411) and is movable relative to the fixed seat (21) along the standard axis (411) so that when the corresponding bolt hole (41) is in the standard position, at least a portion of the first locating pin (22) can extend into or leave the corresponding bolt hole (41). The standard axis (411) is the axis when the corresponding bolt hole (41) is in the standard position.

8. The power battery inspection fixture according to claim 7, characterized in that, The power battery inspection fixture also includes a lifting assembly (3), which is installed on the inspection base (1) and is adapted to lift the power battery (4). The standard axis (411) extends along the direction of gravity, and when the power battery (4) is placed on the detection base (1), the multiple positioning components (2) are all located above the power battery (4); The positioning component (2) further includes a positioning block (23), which is located on the lower surface of the fixed base (21). When the power battery (4) is in the standard position, the lower surface of the positioning block (23) is in contact with the power battery (4).

9. The power battery inspection fixture according to claim 7 or 8, characterized in that, The fixing seat (21) is also provided with a guide groove (211); The guide groove (211) cooperates with the first positioning pin (22) to guide the first positioning pin (22) to move along the standard axis (411); The first limiting groove (212) can cooperate with the limiting rod (221) to guide the limiting rod (221) to move along the standard axis (411); The second limiting groove (213) can cooperate with the limiting rod (221) to guide the limiting rod (221) to rotate around the standard axis (411); At the intersection of the second limiting groove (213) and the first limiting groove (212), the first positioning pin (22) can rotate around the standard axis (411) and move along the standard axis (411).

10. The power battery inspection fixture according to claim 1, characterized in that, The detection base (1) is also provided with a plurality of prepositioning holes (15), and the plurality of prepositioning holes (15) correspond one-to-one with the plurality of second positioning pins (42) of the power battery (4), and at least a portion of the corresponding second positioning pin (42) can extend into the prepositioning hole (15).

11. The power battery inspection fixture according to claim 1, characterized in that, The power battery inspection tool also includes a fixing component (5), and the positioning component (2) and the inspection base (1) are detachably connected through the fixing component (5).

12. The power battery inspection fixture according to claim 11, characterized in that, The fixing member (5) is rod-shaped, the positioning component (2) is also provided with a first mounting hole (214), and the detection base (1) is also provided with a plurality of second mounting holes (16). The fastener (5) can pass through the first mounting hole (214) and the second mounting hole (16) in sequence.

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