Measuring device, battery replacing system and vehicle

Abstract

The utility model provides a measuring device, a battery replacing system and a vehicle, and relates to the technical field of vehicle-mounted batteries, and the measuring device comprises a first measuring frame, a second measuring frame and a measuring scale. The first measuring frame is used for being attached to the bottom of the battery box body; one side, used for fitting, of the first measuring frame comprises a first fitting surface and a first measuring surface, and the first fitting surface is arranged at the edge of the first measuring frame; the first attaching surface is used for being attached to the bottom edge of the battery box body. The second measuring frame is used for being attached to the top of the battery replacing base. One side, used for fitting, of the second measuring frame comprises a second fitting surface and a second measuring surface, and the second fitting surface is arranged at the edge of the second measuring frame; the second binding face is used for being attached to the top edge of the battery replacing base. When the measuring device is adopted, the time consumed by measurement is short, the measuring efficiency is improved, and in addition, the influence of the size error of the top of the battery changing base is also considered.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted batteries, and in particular to a measuring device, a battery replacement system and a vehicle. Background Art

[0002] Currently, my country's electric heavy-duty trucks are divided into two types: rechargeable heavy-duty trucks and battery-swap heavy-duty trucks. Battery-swap heavy-duty trucks are generally equipped with a battery-swap battery system, which consists of a battery box and a battery-swap base. The battery-swap base is fixedly connected to the vehicle body, and the battery box is fixedly connected above the battery-swap base. When the vehicle is changing batteries while driving, the battery-swap base and multiple battery boxes need to be connected in a coordinated manner.

[0003] There are errors in the bottom dimensions of different battery cases, and there are also errors in the top dimensions of the battery swap bases carried by different vehicles. In this way, the vehicle needs to perform mechanical processing on the bottom of the battery case and the top of the battery swap base before each battery swap, so that the size and shape of the bottom of the battery case match the size and shape of the top of the battery swap base, but mechanical processing will increase the cost of battery swap. In order to reduce the cost of battery swap, the existing technology can adopt the method of fitting a gasket to the bottom of the battery case to compensate for the dimensional error between the bottom of the battery case and the top of the battery swap base. When adopting this solution, it is necessary to first determine the compensation thickness between the bottom of the battery case and the top of the battery swap base, and then set a gasket of corresponding thickness at the corresponding position between the bottom of the battery case and the top of the battery swap base. The compensation thickness is generally measured by fitting a measuring tool to the bottom of the battery case.

[0004] Because the bottom of the battery case is uneven except for the edges, the compensation thickness of different parts needs to be measured. This requires placing the measuring tool at different locations on the bottom of the battery case for multiple measurements, which is time-consuming and has low measurement efficiency. In addition, the impact of the dimensional error at the top of the battery swap base on the gasket thickness is also ignored. Utility Model Content

[0005] In view of this, the present invention provides a measuring device, a battery swap system, and a vehicle. When using the measuring device, it is only necessary to fit the first measuring frame to the bottom of the battery case once, and then use a measuring ruler to insert it into different positions of the first measuring frame for measurement, so that the dimensional errors at different positions of the bottom of the battery case can be measured. Similarly, it is only necessary to fit the second measuring frame to the top of the battery swap base once, and then use a measuring ruler to insert it into different positions of the second measuring frame for measurement, so that the dimensional errors at different positions of the top of the battery swap base can be measured. This measurement takes less time, so the measurement efficiency is higher, and it also takes into account the influence of the dimensional error of the top of the battery swap base.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] In a first aspect, the present invention discloses a measuring device comprising: a first measuring frame, a second measuring frame, and a measuring ruler. The first measuring frame is configured to be bonded to the bottom of a battery case; a bonding side of the first measuring frame comprises a first bonding surface and a first measuring surface, the first bonding surface being disposed at an edge of the first measuring frame; a projection of the first bonding surface, along a straight line perpendicular to the first bonding surface, is located outside the edge of the first measuring surface; the distance between the first measuring surface and the center of the first measuring frame is smaller than the distance between the first bonding surface and the center of the first measuring frame; the distance between the first bonding surface and the first measuring surface is a first fixed spacing; and the first bonding surface is configured to be bonded to the bottom edge of the battery case.

[0008] The second measuring frame is used to fit with the top of the battery exchange base; the side of the second measuring frame used for fitting includes a second fitting surface and a second measuring surface, and the second fitting surface is arranged at the edge of the second measuring frame; along the straight line direction perpendicular to the second fitting surface, the projection of the second fitting surface is located outside the edge of the second measuring surface; the distance between the second measuring surface and the center of the second measuring frame is smaller than the distance between the second fitting surface and the center of the second measuring frame; the distance between the second fitting surface and the second measuring surface is a second fixed distance; the second fitting surface is used to fit with the top edge of the battery exchange base.

[0009] The measuring ruler is used to extend into the first measuring frame to measure the first actual distance between the bottom of the battery box and the first measuring surface, and is used to extend into the second measuring frame to measure the second actual distance between the top of the battery exchange base and the second measuring surface.

[0010] Optionally, the first measuring frame includes a plurality of first bonding blocks, the plurality of first bonding blocks are arranged along an edge of the first measuring frame, and outer surfaces of the plurality of first bonding blocks constitute the first bonding surface;

[0011] And / or, the second measuring frame includes a plurality of second fitting blocks, the plurality of second fitting blocks are arranged along an edge of the second measuring frame, and outer surfaces of the plurality of second fitting blocks constitute the second fitting surface.

[0012] Optionally, a first guide member is provided on the top of the first measuring frame, and the first guide member protrudes from the first fitting surface, and is used to guide the bottom of the battery box to be connected to the first measuring frame.

[0013] Optionally, the first measuring frame is a rectangular steel frame; the first guide member includes four first guide seats and four first guide pins;

[0014] The four first guide seats are respectively arranged at the four corners of the first fitting surface, and the four first guide pins are all arranged in the middle of the first fitting surface. The first guide seat and the first guide pin are tapered at one end away from the first fitting surface.

[0015] Optionally, the second measuring frame is a rectangular steel frame; the second measuring frame includes a main frame and a rectangular frame, and the rectangular frame is attached to the surface of the main frame;

[0016] The rectangular frame includes two oppositely arranged main transverse beams and two oppositely arranged main longitudinal beams; a plurality of the second bonding blocks are bonded to the surface of the rectangular frame.

[0017] Optionally, the second measuring frame also includes a guide sleeve, which is fixedly connected to the main frame and is used to guide the second measuring frame to connect with the battery exchange base; the guide sleeve is provided with multiple guide holes; the guide holes are detachably connected to the second guide pin shaft provided on the battery exchange base.

[0018] In the second aspect, the utility model discloses a battery exchange system, which includes a battery case, a battery exchange base, a gasket and a measuring device described in any one of the first aspects above. The bottom of the battery case is detachably connected to the top of the battery exchange base, and the gasket is used to be clamped between the battery case and the battery exchange base. The measuring device is used to measure a first dimensional error at the bottom of the battery case and a second dimensional error at the top of the battery exchange base to determine the thickness of the gasket.

[0019] Optionally, the battery box includes a steel frame and a locking mechanism, and the locking mechanism is used to lock and connect the steel frame and the battery exchange base.

[0020] Optionally, the battery exchange base is a rectangular base, and a second guide seat is provided at each of the four corners of the battery exchange base. The second guide seat is connected to the connecting hole on the second measuring frame, and the insertion end of the second guide seat is conical.

[0021] In a third aspect, the present invention discloses a vehicle, comprising the battery exchange system described in any one of the second aspects above.

[0022] Compared with the related art, the beneficial effects of this application are at least:

[0023] Since the first measuring frame is used to measure the first dimensional error d1 of the battery case bottom, the result of this first dimensional error d1 is the difference between the first actual spacing D2 and the first fixed spacing D1. When the first dimensional error d1 is within the allowable error range [-E, E], a standard gasket is used to align the corresponding position of the battery case bottom. When the error of the first dimension d1 is greater than the maximum value E of the allowable error range, it indicates that the battery case bottom is concave at that location, and a thick gasket is required to align the corresponding position of the battery case bottom. When the error of the first dimension d1 is less than the minimum value -E of the allowable error range, it indicates that the battery case bottom is convex at that location, and a thin gasket is required to align the corresponding position of the battery case bottom. Specifically, when the first actual spacing D2 is within the range [D1-E, D1+E], a standard gasket is used to align the corresponding position of the battery case bottom. When the first actual spacing D2 is greater than D1+E, a thick gasket is required to align the corresponding position of the battery case bottom. When the first actual distance D2 is smaller than D1-E, a thin gasket needs to be used to fit the corresponding position of the bottom of the battery box.

[0024] Similarly, the second measuring frame is used to measure the second dimensional error d2 of the top of the battery swap base. The result of the second dimensional error d2 is the difference between the second actual spacing F2 and the second fixed spacing F1. When the second dimensional error d2 is within the allowable error range [-G, G], an ordinary gasket is used to fit the corresponding position on the top of the battery swap base. When the error of the first dimension d2 is greater than the maximum value G of the allowable error range, it means that the position on the top of the battery swap base is concave, and a thick gasket needs to be used to fit the corresponding position on the top of the battery swap base. When the error of the second dimension d2 is less than the minimum value -G of the allowable error range, it means that the position on the top of the battery swap base is convex, and a thin gasket needs to be used to fit the corresponding position on the top of the battery swap base. Specifically, when the second actual spacing F2 is within the range of [F1-G, F1+G], an ordinary gasket is used to fit the corresponding position on the top of the battery swap base. When the first actual spacing F2 is greater than F1+G, a thick gasket needs to be used to fit the corresponding position on the top of the battery swap base. When the second actual spacing F2 is smaller than F1-G, a thin gasket is required to fit the corresponding position on the top of the battery swap base.

[0025] When using the first measuring frame of the measuring device to measure the first dimensional error d1 of the bottom of the battery case, first fit the first fitting surface of the first measuring frame to the edge of the bottom of the battery case and make the first measuring frame and the battery case relatively stationary. Then use a measuring ruler to extend into different positions of the first measuring frame to measure multiple first actual distances D2 between multiple different positions of the bottom of the battery case and the first measuring surface. Then, the first dimensional error d1 can be obtained by subtracting the first actual distance D2 from the first fixed distance D1. Then, the above method is used to compare the first dimensional error d1 with the error range [-E, E] to obtain a comparison result. Finally, according to the comparison result, a gasket of corresponding thickness is selected to fit the bottom of the battery case. Similarly, when using the second measuring frame of the measuring device to measure the second dimensional error d2 on the top of the battery swap base, the method is the same as the above content, so it will not be repeated again.

[0026] When using this measuring device, it is only necessary to fit the first measuring frame to the bottom of the battery case once, and then use the measuring ruler to insert it into different positions of the first measuring frame for measurement, so that the first dimensional error d1 at different positions of the bottom of the battery case can be measured. Similarly, it is only necessary to fit the second measuring frame to the top of the battery swap base once, and then use the measuring ruler to insert it into different positions of the second measuring frame for measurement, so that the second dimensional error d2 at different positions of the top of the battery swap base can be measured. This measurement takes less time, so the measurement efficiency is higher. In addition, compared with the measuring tools in the related art, it takes into account the influence of the dimensional error of the top of the battery swap base. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 This is a schematic structural diagram of a first measuring frame of a measuring device provided by an embodiment of the present utility model;

[0029] Figure 2 yes Figure 1 Exploded view of the first measuring stand in the figure;

[0030] Figure 3 This is a schematic structural diagram of a second measuring frame of a measuring device provided by an embodiment of the present utility model;

[0031] Figure 4 yes Figure 3 A schematic structural diagram of the second fitting block, rectangular frame and guide sleeve in the exploded view of the second measuring frame;

[0032] Figure 5 yes Figure 3The structural diagram of the main frame body in the exploded view of the second measuring frame;

[0033] Figure 6 This is a structural diagram of a battery box and a first measuring frame connected to a battery swap system provided by an embodiment of the present utility model;

[0034] Figure 7 This is a structural diagram of a battery swap base and a second measurement frame of a battery swap system provided by an embodiment of the present utility model when connected;

[0035] Figure 8 yes Figure 6 A partial enlarged view of the middle locking mechanism.

[0036] Description of reference numerals:

[0037] 1-measuring device, 11-first measuring frame, 111-first fitting surface, 112-first measuring surface, 113-first fitting block, 114-first guide, 1141-first guide seat, 1142-first guide pin, 12-second measuring frame, 121-second fitting surface, 122-second measuring surface, 123-second fitting block, 124-main frame, 125-rectangular frame, 1251-main crossbeam, 1252-main longitudinal beam, 126-guide shaft sleeve, 2-battery box, 21-steel frame, 22-locking mechanism, 221-cylinder, 222-locking pressure rod, 223-locking pressure plate, 224-locking pressure plate mounting seat, 3-battery exchange base, 31-second guide pin, 32-second guide seat, 100-battery exchange system. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] The terms "first," "second," and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0040] It should be understood that references throughout this specification to "some embodiments" mean that a particular feature, structure, or characteristic associated with an embodiment is included in at least one embodiment of the present invention. Therefore, the appearance of "in some embodiments" throughout this specification does not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0041] The following describes in detail a measuring device, a battery replacement system, and a vehicle provided by the present invention by listing specific embodiments.

[0042] Figure 1 This is a structural diagram of a first measuring frame 11 of a measuring device 1 provided in an embodiment of the present utility model. Figure 2 yes Figure 1 The exploded view of the first measuring frame 11 in FIG. Figure 3 This is a structural diagram of a second measuring frame 12 of a measuring device 1 provided in an embodiment of the present utility model. Figure 4 yes Figure 3 Schematic diagram of the structure of the second fitting block 123, the rectangular frame 125 and the guide sleeve 126 in the exploded view of the second measuring frame 12.

[0043] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The measuring device 1 includes: a first measuring frame 11, a second measuring frame 12, and a measuring ruler. The first measuring frame 11 is configured to be bonded to the bottom of the battery case 2; the bonding side of the first measuring frame 11 includes a first bonding surface 111 and a first measuring surface 112, with the first bonding surface 111 disposed at the edge of the first measuring frame 11; along a straight line perpendicular to the first bonding surface 111, the projection of the first bonding surface 111 is located outside the edge of the first measuring surface 112; the distance between the first measuring surface 112 and the center of the first measuring frame 11 is smaller than the distance between the first bonding surface 111 and the center of the first measuring frame 11; the distance between the first bonding surface 111 and the first measuring surface 112 is a first fixed spacing; and the first bonding surface 111 is configured to be bonded to the bottom edge of the battery case 2.

[0044] The second measuring frame 12 is used to fit with the top of the battery exchange base 3; the side of the second measuring frame 12 for fitting includes a second fitting surface 121 and a second measuring surface 122, and the second fitting surface 121 is arranged at the edge of the second measuring frame 12; along the straight line direction perpendicular to the second fitting surface 121, the projection of the second fitting surface 121 is located outside the edge of the second measuring surface 122; the distance between the second measuring surface 122 and the center of the second measuring frame 12 is smaller than the distance between the second fitting surface 121 and the center of the second measuring frame 12; the distance between the second fitting surface 121 and the second measuring surface 122 is a second fixed distance; the second fitting surface 121 is used to fit with the top edge of the battery exchange base 3.

[0045] The measuring ruler is used to extend into the first measuring frame 11 to measure the first actual distance between the bottom of the battery box 2 and the first measuring surface 112, and is used to extend into the second measuring frame 12 to measure the second actual distance between the top of the battery exchange base 3 and the second measuring surface 122.

[0046] In the embodiment of the present application, the first measuring frame 11 is used to measure the first dimensional error d1 of the bottom of the battery case 2. The result of the first dimensional error d1 is the difference between the first actual spacing D2 and the first fixed spacing D1. When the first dimensional error d1 is within the allowable error range [-E, E], an ordinary gasket is used to fit the corresponding position of the bottom of the battery case 2. When the error of the first dimension d1 is greater than the maximum value E of the allowable error range, it means that the position of the bottom of the battery case 2 is concave, and a thick gasket needs to be used to fit the corresponding position of the bottom of the battery case 2. When the error of the first dimension d1 is less than the minimum value -E of the allowable error range, it means that the position of the bottom of the battery case 2 is convex, and a thin gasket needs to be used to fit the corresponding position of the bottom of the battery case 2. Specifically, when the first actual spacing D2 is within the range of [D1-E, D1+E], an ordinary gasket is used to fit the corresponding position of the bottom of the battery case 2. When the first actual distance D2 is greater than D1+E, a thick gasket needs to be used to fit the corresponding position of the bottom of the battery box 2. When the first actual distance D2 is less than D1-E, a thin gasket needs to be used to fit the corresponding position of the bottom of the battery box 2.

[0047] Similarly, the second measuring frame 12 is used to measure the second dimensional error d2 at the top of the battery swap base 3. The result of the second dimensional error d2 is the difference between the second actual spacing F2 and the second fixed spacing F1. When the second dimensional error d2 is within the allowable error range [-G, G], an ordinary gasket is used to fit the corresponding position on the top of the battery swap base 3. When the error of the first dimension d2 is greater than the maximum value G of the allowable error range, it means that the position on the top of the battery swap base 3 is concave, and a thick gasket needs to be used to fit the corresponding position on the top of the battery swap base 3. When the error of the second dimension d2 is less than the minimum value -G of the allowable error range, it means that the position on the top of the battery swap base 3 is convex, and a thin gasket needs to be used to fit the corresponding position on the top of the battery swap base 3. Specifically, when the second actual spacing F2 is within the range of [F1-G, F1+G], an ordinary gasket is used to fit the corresponding position on the top of the battery swap base 3. When the first actual spacing F2 is greater than F1+G, a thick gasket needs to be used to fit the corresponding position on the top of the battery swap base 3. When the second actual spacing F2 is less than F1-G, a thin gasket needs to be used to fit the corresponding position on the top of the battery swap base 3.

[0048] When using the first measuring frame 11 of the measuring device 1 to measure the first dimensional error d1 at the bottom of the battery box 2, first fit the first fitting surface 111 of the first measuring frame 11 to the edge of the bottom of the battery box 2 and make the first measuring frame 11 and the battery box 2 relatively stationary. Then use a measuring ruler to extend into different positions of the first measuring frame 11 to measure multiple first actual distances D2 between multiple different positions at the bottom of the battery box 2 and the first measuring surface 112. Then, the first actual distance D2 is subtracted from the first fixed distance D1 to obtain the first dimensional error d1. Then, the above method is used to compare the first dimensional error d1 with the error range [-E, E] to obtain a comparison result. Finally, according to the comparison result, a gasket of corresponding thickness is selected to fit the bottom of the battery box 2. Similarly, when using the second measuring frame 12 of the measuring device 1 to measure the second dimensional error d2 at the top of the battery swap base 3, the method is the same as the above content, so it will not be repeated again.

[0049] When using the measuring device 1, it is only necessary to fit the first measuring frame 11 to the bottom of the battery case 2 once, and then use a measuring ruler to insert it into different positions of the first measuring frame 11 for measurement, so that the first dimensional error d1 at different positions of the bottom of the battery case 2 can be measured. Similarly, it is only necessary to fit the second measuring frame 12 to the top of the battery swap base 3 once, and then use a measuring ruler to insert it into different positions of the second measuring frame 12 for measurement, so that the second dimensional error d2 at different positions of the top of the battery swap base 3 can be measured. This measurement takes less time, so the measurement efficiency is higher. In addition, compared with the measuring tools in the related art, the influence of the dimensional error of the top of the battery swap base 3 is taken into account.

[0050] It should be noted that the above-mentioned allowable error range [-E, E] is generally [-0.5, 0.5]. In this case, when the first actual spacing D2 is within the range of [D1-0.5, D1+0.5], ordinary gaskets are used. When the first actual spacing D2 is within the range of [D1-1.5, D1-0.5], thin gaskets are used. When the first actual spacing D2 is within the range of [D1+0.5, D1+1.5], thick gaskets are used. The above-mentioned allowable error range [-G, G] is generally [-0.25, 0.25]. In this case, when the second actual spacing F2 is within the range of [F1-0.25, F1+0.25], ordinary gaskets are used. When the second actual spacing F2 is less than F1-0.25, thin gaskets are used. When the second actual spacing F2 is greater than F1+0.25, thick gaskets are used. The units of the above dimensions are all millimeters. In addition, the above-mentioned error range [-E, E] and error range [-G, G] can also be other values. The size of the value is determined according to the actual situation, and the embodiment of the present application does not limit this.

[0051] It should also be noted that the above-mentioned measuring ruler can be a metal ruler, a plastic ruler, or a ruler made of other materials, and the embodiments of the present application are not limited to this.

[0052] Alternatively, in some embodiments, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The first measuring frame 11 includes a plurality of first bonding blocks 113 arranged along the edges of the first measuring frame 11. The outer surfaces of the plurality of first bonding blocks 113 form a first bonding surface 111. The plurality of first bonding blocks 113 are spaced apart from each other, so that during use of the first measuring frame 11, each first bonding block 113 does not interfere with each other. If some of the first bonding blocks 113 become damaged, the first measuring frame 11 can be repaired by simply replacing the damaged first bonding blocks 113. Compared to solutions that use a single integral bonding block to form the first bonding surface 111, this reduces the maintenance cost of the first measuring frame 11.

[0053] Alternatively, the second measuring frame 12 includes a plurality of second bonding blocks 123, which are arranged along the edges of the second measuring frame 12. The outer surfaces of the plurality of second bonding blocks 123 form the second bonding surface 121. The plurality of second bonding blocks 123 are spaced apart from each other, so that during use of the second measuring frame 12, each second bonding block 123 does not interfere with each other. If some of the second bonding blocks 123 become damaged, the second measuring frame 12 can be repaired by simply replacing the damaged second bonding blocks 123. This reduces the maintenance cost of the second measuring frame 12 compared to solutions that use a single integral bonding block to form the second bonding surface 121.

[0054] It should be noted that the first bonding block 113 and the second bonding block 123 may be metal blocks, plastic blocks, or other types of blocks, which is not limited in the embodiment of the present application.

[0055] Alternatively, in some embodiments, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 A first guide member 114 is provided on the top of the first measuring frame 11 . The first guide member 114 protrudes from the first fitting surface 111 and is used to guide the bottom of the battery box 2 to connect with the first measuring frame 11 .

[0056] The bottom of the battery case 2 is provided with a first guide hole at a position corresponding to the first guide member 114. The first guide member 114 is detachably connected to the first guide hole. This makes it easier to connect the first measurement frame 11 to the bottom of the battery case 2, thereby improving the efficiency of the connection between the first measurement frame 11 and the bottom of the battery case 2, thereby improving the measurement efficiency of the first measurement frame 11.

[0057] Alternatively, in some embodiments, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The first measuring frame 11 is a rectangular steel frame; the first guide member 114 includes four first guide seats 1141 and four first guide pins 1142; the four first guide seats 1141 are respectively arranged at the four corners of the first fitting surface 111, and the four first guide pins 1142 are all arranged in the middle of the first fitting surface 111, and the ends of the first guide seats 1141 and the first guide pins 1142 away from the first fitting surface 111 are tapered.

[0058] Since the battery case 2 is generally in the shape of a cuboid, the bottom of the battery case 2 is rectangular. The first measuring frame 11 is configured as a rectangular steel frame to precisely match the bottom of the battery case 2. Since the four first guide seats 1141 are respectively located at the four corners of the first fitting surface 111, the positions of the four corners of the bottom of the battery case 2 can be limited. When the bottom of the battery case 2 tends to rotate relative to the first measuring frame 11, the four first guide seats 1141 located at the four corners of the first measuring frame 11 provide a greater torque to the support force provided to the battery case 2, thereby making the connection between the first measuring frame 11 and the bottom of the battery case 2 more stable. Since the four first guide pins 1142 are all located in the middle of the first fitting surface 111, this further makes the connection between the bottom of the battery case 2 and the first measuring frame 11 more stable. Therefore, the first actual spacing D2 can be measured more accurately, and thus the first dimensional error d1 can be measured more accurately. Next, since the ends of the first guide seat 1141 and the first guide pin 1142 away from the first fitting surface 111 are tapered, the tapered structure can play a guiding role, which makes it easier for the first measuring frame 11 to be connected to the bottom of the battery box 2.

[0059] Alternatively, in some embodiments, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The second measuring frame 12 is a rectangular steel frame; the second measuring frame 12 includes a main frame body 124 and a rectangular frame 125, and the rectangular frame 125 is attached to the surface of the main frame body 124; the rectangular frame 125 includes two oppositely arranged main cross beams 1251 and two oppositely arranged main longitudinal beams 1252; a plurality of second bonding blocks 123 are attached to the surface of the rectangular frame 125.

[0060] Since the top of the battery swap base 3 is generally rectangular, and the bottom of the battery box 2 is rectangular, the second measuring frame 12 is set as a rectangular steel frame, which can just match the top of the battery swap base 3. Then, since the second measuring frame 12 includes a rectangular frame 125, the rectangular frame 125 is attached to the surface of the main frame 124; the rectangular frame 125 includes two oppositely arranged main cross beams 1251 and two oppositely arranged main longitudinal beams 1252. In this way, one side of the rectangular frame 125 is connected to the main frame 124, and the other side is connected to the second fitting block 123, so that the force exerted on the second fitting block 123 can be evenly transmitted to the rectangular frame 125, and then transmitted to the main frame 124, thereby making the structure of the second measuring frame 12 more stable when connected to the battery swap base 3.

[0061] Alternatively, in some embodiments, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4and Figure 5 The second measuring frame 12 also includes a guide sleeve 126, which is fixedly connected to the main frame 124 and is used to guide the second measuring frame 12 to connect with the battery exchange base 3; the guide sleeve 126 is provided with multiple guide holes; the guide holes are detachably connected with the second guide pin shaft 31 provided on the battery exchange base 3.

[0062] By cooperating the multiple guide holes provided on the guide sleeve 126 with the second guide pin 31 provided on the battery swap base 3, it is possible to make it easier to connect the second measuring frame 12 with the top of the battery swap base 3, thereby improving the connection efficiency between the second measuring frame 12 and the top of the battery swap base 3, thereby improving the measurement efficiency of the second measuring frame 12.

[0063] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 The embodiment of the present application also discloses a battery exchange system 100, which includes a battery case 2, a battery exchange base 3, a gasket and any one of the above-mentioned measuring devices 1. The bottom of the battery case 2 is detachably connected to the top of the battery exchange base 3. The gasket is used to be clamped between the battery case 2 and the battery exchange base 3. The measuring device 1 is used to measure the first dimensional error d1 at the bottom of the battery case 2 and the second dimensional error d2 at the top of the battery exchange base 3 to determine the thickness of the gasket.

[0064] In the embodiment of the present application, there are three types of gaskets, namely ordinary gaskets, thick gaskets and thin gaskets. Specifically, the thickness of the ordinary gasket corresponds to the first fixed spacing D1, the increased thickness of the thick gasket relative to the ordinary gasket corresponds to the difference between the first actual spacing D2 and the first fixed spacing D1, and the reduced thickness of the thin gasket relative to the ordinary gasket corresponds to the difference between the first fixed spacing D1 and the first actual spacing D2. In this way, the gasket can compensate for the bottom size error of the battery box 2 and the top size error of the battery exchange base 3. Compared with the solution of mechanical processing of the bottom of the battery box 2 and the top of the battery exchange base 3, the cost of battery exchange can be significantly reduced.

[0065] When using the battery swap system 100 and performing battery swapping, first determine the battery case 2 to be installed, and align the first fitting surface 111 of the first measuring frame 11 with the edge of the bottom of the battery case 2; then extend the measuring ruler into different positions of the first measuring frame 11 to measure multiple first actual distances D2 between multiple different positions on the bottom of the battery case 2 and the first measuring surface 112; then select gaskets of different thicknesses based on the different first actual distances D2 and attach the gaskets to the corresponding positions on the bottom of the battery case 2. Then align the second fitting surface 121 of the second measuring frame 12 with the edge of the top of the battery swap base 3; then extend the measuring ruler into different positions of the second measuring frame 12 to measure multiple second actual distances F2 between multiple different positions on the top of the battery swap base 3 and the second measuring surface 122; then select gaskets of different thicknesses based on the different second actual distances F2 and attach the gaskets to the corresponding positions on the top of the battery swap base 3.

[0066] When using the measuring device 1, it is only necessary to fit the first measuring frame 11 to the bottom of the battery case 2 once, and then use a measuring ruler to insert it into different positions of the first measuring frame 11 for measurement, so that the first dimensional error d1 at different positions of the bottom of the battery case 2 can be measured. Similarly, it is only necessary to fit the second measuring frame 12 to the top of the battery swap base 3 once, and then use a measuring ruler to insert it into different positions of the second measuring frame 12 for measurement, so that the second dimensional error d2 at different positions of the top of the battery swap base 3 can be measured. This method takes less time to measure, so the measurement efficiency is higher, which can improve the efficiency of battery swapping. In addition, compared with the measuring tools in the related art, the influence of the dimensional error of the top of the battery swap base 3 is taken into account, so that the thickness of the gasket used is more accurate, thereby making the connection between the battery case 2 and the battery swap base 3 more firm and stable.

[0067] Alternatively, in some embodiments, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 and Figure 8 The battery box 2 includes a steel frame 21 and a locking mechanism 22. The locking mechanism 22 is used to lock the steel frame 21 and the battery swap base 3. Specifically, the locking mechanism 22 includes a cylinder 221, a locking pressure rod 222, a locking pressure plate 223, and a locking pressure plate mounting seat 224. The cylinder 221 can push the locking pressure rod 222, and the locking pressure rod 222 presses the locking pressure plate 223 fixed on the locking pressure plate mounting seat 224 to lock the steel frame 21 and the base. A battery box 2 requires four to six locking mechanisms 22 to work together to achieve the locking function.

[0068] Alternatively, in some embodiments, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 The battery swap base 3 is a rectangular base, with a second guide seat 32 positioned at each of the four corners. The second guide seat 32 engages with the connection hole on the second measuring frame 12, and the insertion end of the second guide seat 32 is tapered. Since the battery case 2 is generally rectangular in shape, the bottom of the battery case 2 is rectangular. Setting the battery swap base 3 as a rectangular base allows it to better match the bottom of the battery case 2. Furthermore, since a second guide seat 32 is positioned at each of the four corners of the battery swap base 3, the second guide seat 32 engages with the connection hole on the second measuring frame 12. This limits the position of the four corners of the top of the battery swap base 3. When the top of the battery swap base 3 tends to rotate relative to the second measuring frame 12, the second guide seats 32 at the four corners of the battery swap base 3 provide greater support force to the second measuring frame 12, resulting in a greater torque, which ensures a more stable connection between the second measuring frame 12 and the top of the battery swap base 3. Furthermore, since the insertion end of the second guide seat 32 is tapered. The conical structure can play a guiding role, so that the second measuring frame 12 can be more easily connected to the top of the battery replacement base 3.

[0069] See also Figure 6 and Figure 7 , an embodiment of the present application also discloses a vehicle, which includes any of the above-mentioned battery exchange systems 100.

[0070] Since the measuring device 1 in the battery swap system 100 can improve the efficiency of battery swapping, the battery swapping efficiency of the vehicle equipped with the battery swap system 100 is higher, thereby reducing the time spent on battery swapping, thereby improving the utilization efficiency of the vehicle and improving the economic benefits of the vehicle.

[0071] In addition, the battery exchange system 100 takes into account the influence of the size error of the top of the battery exchange base 3, so that the thickness of the gasket used is more accurate, thereby making the connection between the battery box 2 and the battery exchange base 3 more firm and stable, so it can extend the service life of the battery exchange system 100, and thus extend the service life of the vehicle.

[0072] It should be noted that the above-mentioned vehicles can be trucks, construction machinery, or other types of vehicles, and the embodiments of the present application do not limit this.

[0073] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A measuring device (1), characterized in that include: A first measuring frame (11), the first measuring frame (11) is used to fit with the bottom of the battery box (2); the side of the first measuring frame (11) used for fitting includes a first fitting surface (111) and a first measuring surface (112), the first fitting surface (111) is arranged at the edge of the first measuring frame (11); along a straight line direction perpendicular to the first fitting surface (111), the projection of the first fitting surface (111) is located outside the edge of the first measuring surface (112); the distance between the first measuring surface (112) and the center of the first measuring frame (11) is smaller than the distance between the first fitting surface (111) and the center of the first measuring frame (11); the distance between the first fitting surface (111) and the first measuring surface (112) is a first fixed distance; the first fitting surface (111) is used to fit with the bottom edge of the battery box (2); A second measuring frame (12), the second measuring frame (12) is used to fit with the top of the battery swap base (3); the side of the second measuring frame (12) used for fitting includes a second fitting surface (121) and a second measuring surface (122), the second fitting surface (121) is arranged at the edge of the second measuring frame (12); along the straight line direction perpendicular to the second fitting surface (121), the projection of the second fitting surface (121) is located outside the edge of the second measuring surface (122); the distance between the second measuring surface (122) and the center of the second measuring frame (12) is smaller than the distance between the second fitting surface (121) and the center of the second measuring frame (12); the distance between the second fitting surface (121) and the second measuring surface (122) is a second fixed distance; the second fitting surface (121) is used to fit with the top edge of the battery swap base (3); A measuring ruler is used to extend into the first measuring frame (11) to measure a first actual distance between the bottom of the battery box (2) and the first measuring surface (112), and to extend into the second measuring frame (12) to measure a second actual distance between the top of the battery exchange base (3) and the second measuring surface (122).

2. The measuring device (1) according to claim 1, characterized in that The first measuring frame (11) comprises a plurality of first bonding blocks (113), wherein the plurality of first bonding blocks (113) are arranged along the edge of the first measuring frame (11), and the outer surfaces of the plurality of first bonding blocks (113) constitute the first bonding surface (111); And / or, the second measuring frame (12) includes a plurality of second fitting blocks (123), the plurality of second fitting blocks (123) are arranged along the edge of the second measuring frame (12), and the outer surfaces of the plurality of second fitting blocks (123) constitute the second fitting surface (121).

3. The measuring device (1) according to claim 2, characterized in that A first guide member (114) is provided on the top of the first measuring frame (11), and the first guide member (114) protrudes from the first fitting surface (111) and is used to guide the bottom of the battery box (2) to connect with the first measuring frame (11).

4. The measuring device (1) according to claim 3, characterized in that The first measuring frame (11) is a rectangular steel frame; the first guide member (114) includes four first guide seats (1141) and four first guide pins (1142); The four first guide seats (1141) are respectively arranged at the four corners of the first fitting surface (111), and the four first guide pins (1142) are all arranged in the middle of the first fitting surface (111). The ends of the first guide seats (1141) and the first guide pins (1142) away from the first fitting surface (111) are conical.

5. The measuring device (1) according to claim 2, characterized in that The second measuring frame (12) is a rectangular steel frame; the second measuring frame (12) includes a main frame (124) and a rectangular frame (125), and the rectangular frame (125) is attached to the surface of the main frame (124); The rectangular frame (125) comprises two oppositely arranged main transverse beams (1251) and two oppositely arranged main longitudinal beams (1252); a plurality of the second bonding blocks (123) are bonded to the surface of the rectangular frame (125).

6. The measuring device (1) according to claim 5, characterized in that The second measuring frame (12) also includes a guide sleeve (126), which is fixedly connected to the main frame body (124) and is used to guide the second measuring frame (12) to be connected to the battery exchange base (3); the guide sleeve (126) is provided with a plurality of guide holes; the guide holes are detachably connected to the second guide pin shaft (31) provided on the battery exchange base (3).

7. A battery replacement system (100), characterized in that: It comprises a battery case (2), a battery exchange base (3), a gasket and a measuring device (1) according to any one of claims 1 to 6, wherein the bottom of the battery case (2) and the top of the battery exchange base (3) are detachably connected, the gasket is used to be clamped between the battery case (2) and the battery exchange base (3), and the measuring device (1) is used to measure a first dimensional error at the bottom of the battery case (2) and a second dimensional error at the top of the battery exchange base (3) to determine the thickness of the gasket.

8. The battery replacement system (100) according to claim 7, characterized in that: The battery box (2) comprises a steel frame (21) and a locking mechanism (22), wherein the locking mechanism (22) is used to lock and connect the steel frame (21) and the battery exchange base (3).

9. The battery replacement system (100) according to claim 7, characterized in that: The battery exchange base (3) is a rectangular base, and a second guide seat (32) is respectively provided at the four corners of the battery exchange base (3). The second guide seat (32) is connected to the connection hole on the second measuring frame (12), and the insertion end of the second guide seat (32) is tapered.

10. A vehicle, characterized in that: A battery replacement system (100) comprising the battery replacement system (100) according to any one of claims 7 to 9.

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