A square battery hipot detection device

Abstract

This invention discloses a square battery hitt detection device, comprising a bottom support mechanism, at least one set of battery large-face clamping mechanisms, and at least one set of battery large-face hitt detection mechanisms. Each set of battery large-face clamping mechanisms corresponds to one set of battery large-face hitt detection mechanisms. The battery large-face clamping mechanisms are slidably mounted on the bottom support mechanism, and the battery large-face hitt detection mechanisms are spaced apart and opposite to each other on the bottom support mechanism. Each battery large-face hitt detection mechanism has a detection channel for the battery large-face clamping mechanism to pass through. The detection position is at the detection channel of the battery large-face hitt detection mechanism, and the loading and unloading position is located next to the detection channel. The advantages of this invention are: it can automatically detect the insulation resistance and insulation voltage of the battery surface without manual operation; it eliminates the need to flip the battery, effectively avoiding interference from the mechanical claws during loading and unloading; and the vertical hitt measurement allows the length and width measuring mechanisms to be mounted on a single vertical plate, which is beneficial for unifying the benchmark.

Description

Technical Field

[0001] This invention relates to a square battery hitpot testing device, belonging to the field of square battery testing. Background Technology

[0002] With the development of the lithium battery industry, the requirements for lithium battery production efficiency and energy density are increasing. Traditional cylindrical batteries have relatively low space utilization, leading to the rise of prismatic batteries with higher energy density. The manufacturing process of prismatic batteries is more complex, thus requiring effective control of the cell production process to improve production line efficiency, capacity, and battery quality. Battery safety during use is paramount, including personnel and equipment safety. Therefore, a safety test is necessary during battery production, which includes measuring the insulation performance of all six sides of the prismatic battery. Traditionally, this is done manually using pressure plates and probes to measure the insulation resistance value. This manual method is inefficient, has low measurement accuracy, and the results are easily affected by human emotions, experience, and attentiveness, resulting in low accuracy. Some horizontal battery measuring mechanisms have also appeared on the market, requiring a flipping mechanism and the measuring mechanism to avoid the grippers, thus failing to meet the requirement of measuring the insulation performance of all sides. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a square battery hitopot testing device that requires no manual operation, can automatically measure the insulation performance of the entire battery surface, and provides accurate measurement results.

[0004] The technical solution adopted in this invention is:

[0005] A square battery hit-pot detection device, characterized in that it includes a bottom support mechanism, at least one set of battery large-face clamping mechanisms, and at least one set of battery large-face hit-pot detection mechanisms; each set of battery large-face clamping mechanisms corresponds to one set of battery large-face hit-pot detection mechanisms, the battery large-face clamping mechanisms are slidably mounted on the bottom support mechanism, and the battery large-face hit-pot detection mechanisms are spaced apart and opposite to each other on the bottom support mechanism, and the battery large-face hit-pot detection mechanisms are provided with detection channels for the battery large-face clamping mechanisms to pass through; the detection position is at the detection channel of the battery large-face hit-pot detection mechanism, and the loading and unloading position is located next to the detection channel;

[0006] The bottom support mechanism includes a base plate and a shifting drive cylinder. The base plate is provided with a horizontal slide rail, the extension direction of the axis of the horizontal slide rail is defined as longitudinal, and the horizontal direction perpendicular to the longitudinal direction is defined as transverse. The shifting drive cylinder is set on the base plate, and the movable end of the shifting drive cylinder is connected to the battery large surface clamping mechanism through a third floating joint, which is used to drive the battery large surface clamping mechanism to switch between the loading / unloading position and the detection position.

[0007] The battery large-area clamping mechanism is longitudinally arranged on the base plate and includes a base plate and a battery clamping part. The base plate of at least one battery large-area clamping mechanism is connected to the moving end of the displacement driving part. The base plate is slidably mounted on a horizontal slide rail, and the battery clamping part is slidably arranged on a longitudinal guide rail.

[0008] The battery large-area hito detection mechanism is longitudinally mounted on a base plate and includes a detection support frame and a battery large-area hito detection unit. The detection support frame has a vertical reference plate, and a detection channel is provided at the lower part of the vertical reference plate. A horizontal slide rail passes through the detection channel. The battery large-area hito detection unit is mounted on the vertical reference plate. The detection end of the battery large-area hito detection unit for contacting the surface and electrodes of the square battery, and the surface of the battery clamping part for contacting the surface of the square battery, are provided with conductive plates. The conductive plates are electrically connected to one measuring electrode of a hito measuring instrument, and the other measuring electrode of the hito measuring instrument is connected to the negative electrode of the square battery for measuring the insulation resistance and insulation voltage of the battery surface.

[0009] Furthermore, the battery clamping part is a clamping mechanism with the jaws facing upwards, including an active clamping body, a passive clamping body, a first clamping cylinder, and a bottom support assembly. The active clamping body and the passive clamping body are spaced apart and opposite to each other on the longitudinal guide rails on the substrate, with a battery clamping space between them. The direction in which the active clamping body and the passive clamping body approach each other in the battery clamping part is defined as the inner side, and the opposite direction is defined as the outer side. The inner surface of the active clamping body facing the battery clamping space is provided with a first conductive plate, and the inner surface of the passive clamping body facing the battery clamping space is provided with a second conductive plate. The active clamping body is connected to the passive clamping body through a gear and rack transmission assembly. The active clamping body moves to drive the passive clamping body to move in the opposite direction to adjust the size of the battery clamping space. The first clamping cylinder is set on the base plate, and the movable end of the first clamping cylinder is connected to the connecting block on the outside of the active clamping body through the first floating joint, which is used to drive the active clamping body to move along the longitudinal guide rail. The bottom support assembly is set on the base plate between the active clamping body and the passive clamping body. The bottom support assembly has a bottom conductive plate on its top. When the active clamping body and the passive clamping body clamp the square battery, the first conductive plate and the second conductive plate are respectively close to the two large surfaces of the square battery, and the bottom conductive plate is close to the bottom surface of the square battery.

[0010] Furthermore, the active clamp body includes a first support base, the bottom of which is slidably mounted on the longitudinal guide rail, and the inner surface of the first support base is provided with a first insulating plate and a first conductive plate from the outside to the inside.

[0011] Furthermore, the passive clamp body includes a second support base, the bottom of which is slidably mounted on the longitudinal guide rail, and the inner surface of the second support base is provided with a second insulating plate and a second conductive plate from the outside to the inside.

[0012] Furthermore, the gear and rack transmission assembly is disposed between the active clamp body and the passive clamp body, and includes a first rack, a second rack, and a gear. The first rack and the second rack are both arranged longitudinally. The outer end of the first rack is connected to the active clamp body, and the outer end of the second rack is connected to the passive clamp body. The gear is rotatably disposed between the active clamp body and the passive clamp body, and both the first rack and the second rack mesh with the gear.

[0013] Furthermore, the detection support frame includes a vertical reference plate, which is mounted on the base plate. The lower part of the vertical reference plate is provided with a detection channel for the battery large-face clamping mechanism to pass through. The outer side of the vertical reference plate is provided with a vertical guide rail and several horizontal guide rails. The vertical guide rail is located above the detection channel, and the horizontal guide rails are symmetrically arranged on both sides of the detection channel. A side support plate is provided between the inner side of the vertical reference plate and the base plate to support the vertical reference plate.

[0014] Furthermore, the battery large-area hit detection unit includes a vertical hit detection section, at least two sets of length detection sections, and two sets of electrode clamping detection sections. The vertical hit detection section is located above the detection channel, and the two sets of length detection sections and the two sets of electrode clamping detection sections are respectively arranged on both sides of the transverse direction of the detection channel. The detection ends of the vertical hit detection section, the length detection section, and the electrode clamping detection section are respectively aligned with the top surface, side surface, and electrode of the square battery in the battery clamping section at the detection station.

[0015] Furthermore, the vertical hito detection unit includes a second clamping cylinder and a vertical sliding seat. The second clamping cylinder is vertically disposed on the outer side of the vertical reference plate. The vertical sliding seat is slidably disposed on the vertical guide rail and is connected to the lifting end of the second clamping cylinder via a second floating joint. The bottom of the vertical sliding seat is provided with a horizontal transverse pressing edge. From top to bottom, a first transverse insulating plate and a transverse conductive plate are sequentially mounted on the bottom of the transverse pressing edge. The transverse conductive plate is electrically connected to the hito measuring instrument. When the battery large-face clamping mechanism moves to the detection channel, the transverse conductive plate is used to contact the top surface of the square battery.

[0016] Furthermore, there are two sets of length detection units, symmetrically arranged on both sides of the detection channel in the transverse direction. Each set includes a third clamping cylinder and a first horizontal sliding seat. The third clamping cylinder is horizontally arranged on the outer side of the vertical reference plate. The first horizontal sliding seat is slidably arranged on the corresponding transverse guide rail. The first horizontal sliding seat is connected to the pushing end of the third clamping cylinder through a fourth floating joint. A second transverse insulating plate and a transverse conductive plate are sequentially installed on the side of the first horizontal sliding seat facing the detection channel. The transverse conductive plate is electrically connected to the Hipot measuring instrument. When the battery clamping mechanism moves to the detection channel, the transverse conductive plate is used to contact the transverse side of the square battery.

[0017] Furthermore, the electrode clamping detection unit includes a second horizontal sliding seat, a third transverse insulating plate, and an electrode conductive block. The second horizontal sliding seat is slidably mounted on the corresponding transverse guide rail and is fixedly connected to one of the first horizontal sliding seats. The first horizontal sliding seat has a third transverse insulating plate and an electrode conductive block arranged sequentially on the side facing the detection channel. The electrode conductive block is electrically connected to the Hipot measuring instrument. When the battery large-face clamping mechanism moves to the detection channel, the electrode conductive block is used to contact the electrodes of the square battery.

[0018] This invention measures the insulation resistance and insulation voltage of the battery surface by connecting six conductive plates pressed onto the six surfaces of the battery to one measuring electrode and another measuring electrode connected to the negative electrode of the battery. In terms of the specific test mechanism layout, two sets of battery surface hit-pot detection mechanisms are symmetrically arranged. Through alternating positions, one set of battery surface hit-pot detection mechanisms is always measuring while the other is loading and unloading, thereby improving the overall cycle time of the device.

[0019] The beneficial effects of this invention are:

[0020] (1) No manual operation is required; the insulation resistance and insulation voltage on the battery surface can be automatically detected.

[0021] (2) The vertical hitt measurement method avoids unnecessary battery flipping and reduces the probability of battery damage;

[0022] (3) The clamp-type symmetrical opening and closing hipot measuring mechanism effectively avoids the interference between the claw and the battery measuring mechanism when the mechanical claw is loading and unloading, and avoids the problem of not being able to fully measure the guide rail by opening the clearance groove on the measuring surface.

[0023] (4) Vertical hitopot measurement allows the length and width measuring mechanisms to be installed on a vertical plate, which is beneficial for unifying the benchmark. Attached Figure Description

[0024] Figure 1 This is one of the structural diagrams of the present invention.

[0025] Figure 2 This is a partially enlarged view of the present invention.

[0026] Figure 3 This is the second structural diagram of the present invention.

[0027] Figure 4 This is a top view of the present invention.

[0028] Figure 5 This is a side view of the present invention.

[0029] Figure 6 This is one of the structural diagrams of the battery large-area clamping mechanism of the present invention.

[0030] Figure 7 This is the second structural diagram of the battery clamping mechanism of the present invention.

[0031] Figure 8 This is a side view of the battery clamping mechanism of the present invention.

[0032] Figure 9 yes Figure 8 AA sectional view. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0041] The present invention discloses a square battery hitpot detection device, comprising a bottom support mechanism 100, two sets of battery large-area clamping mechanisms 200, and two sets of battery large-area hitpot detection mechanisms 300; each set of battery large-area clamping mechanisms 200 corresponds to one set of battery large-area hitpot detection mechanisms 300, the battery large-area clamping mechanisms 200 are slidably disposed on the bottom support mechanism 100, and the battery large-area hitpot detection mechanisms 300 are disposed at intervals opposite to each other on the bottom support mechanism 100, and the battery large-area hitpot detection mechanisms 300 are provided with detection channels 312 for the battery large-area clamping mechanisms 200 to pass through; the detection position is at the detection channel 312 of the battery large-area hitpot detection mechanism 300, and the loading and unloading position is located next to the detection channel 312 and is disposed between two adjacent battery large-area hitpot detection mechanisms 300;

[0042] The bottom support mechanism 100 includes a base plate 110 and a shifting drive cylinder 120. The base plate 110 is provided with two parallel horizontal slide rails 111. The extension direction of the axis of the horizontal slide rails 111 is defined as longitudinal, and the horizontal direction perpendicular to the longitudinal direction is defined as transverse. The shifting drive cylinder 120 is disposed on the base plate 110. The movable end of the shifting drive cylinder 120 is connected to one of the battery large surface clamping mechanisms 200 through a third floating joint 121, and is used to drive the battery large surface clamping mechanism 200 to switch between the loading / unloading position and the detection position.

[0043] The battery large-area clamping mechanism 200 is longitudinally arranged on the base plate 110, including a base plate 210 and a battery clamping part 220. The base plate 210 of the battery large-area clamping mechanism 200 is connected to the actuating end of the shifting drive cylinder 120. The base plate 210 is slidably mounted on the horizontal slide rail 111, and the battery clamping part 220 is slidably arranged on the longitudinal guide rail 211.

[0044] The battery large-area hito detection mechanism 300 is longitudinally mounted on the base plate 110 and includes a detection support frame 310 and a battery large-area hito detection unit 320. The detection support frame 310 has a vertical reference plate 311, and a detection channel 312 is provided at the lower part of the vertical reference plate 311. The horizontal slide rail 111 passes through the detection channel 312. The battery large-area hito detection unit 320 is mounted on the vertical reference plate 311. The detection end of the battery large-area hito detection unit 320 for contacting the surface and electrodes of the square battery, and the surface of the battery clamping part 220 for contacting the surface of the square battery are provided with conductive plates. The conductive plates are electrically connected to one measuring electrode of the hito measuring instrument, and the other measuring electrode of the hito measuring instrument is connected to the negative electrode of the square battery for measuring the insulation resistance and insulation voltage of the battery surface.

[0045] In some embodiments of the present invention, two sets of battery large-area clamping mechanisms 200 can be interconnected by a pull strap 201 to realize the linkage between multiple sets of battery large-area clamping mechanisms 200. Only one set of switching drive cylinder 120 is needed to complete the switching between two sets of battery large-area clamping mechanisms 200. Traditional robotic arms can be used for loading and unloading.

[0046] In some embodiments of the present invention, the base plate 110 is a horizontal rectangular plate, the long side of the rectangular plate extending in the longitudinal direction and the short side extending in the transverse direction. Two horizontal slide rails 111 are spaced apart on the base plate 110, the horizontal slide rails 111 are parallel to each other, and both ends of the horizontal slide rails 111 extend to the longitudinal ends of the rectangular plate.

[0047] In some embodiments of the present invention, the battery clamping part 220 is a clamping mechanism with the jaws facing upwards. Specifically, the battery clamping part 220 includes an active clamping body 230, a passive clamping body 240, a first clamping cylinder 250, and a bottom support assembly 260. The active clamping body 230 and the passive clamping body 240 are spaced apart and arranged opposite each other on the longitudinal guide rail 211 on the substrate 210. A battery clamping space is left between the active clamping body 230 and the passive clamping body 240. The direction in which the active clamping body 230 and the passive clamping body 240 approach each other in the battery clamping part 220 is defined as the inner side, and the opposite direction is defined as the outer side. The inner surface of the active clamping body 230 facing the battery clamping space is provided with a first conductive plate 231, and the inner surface of the passive clamping body 240 facing the battery clamping space is provided with a second conductive plate 241. The active clamping body 230 is driven by a gear and rack transmission assembly 27. The active clamp 230 is connected to the passive clamp 240. The active clamp 230 moves to drive the passive clamp 240 to move in the opposite direction to adjust the size of the battery clamping space. The first clamping cylinder 250 is set on the base plate 210. The movable end of the first clamping cylinder 250 is connected to the connecting block 234 on the outside of the active clamp 230 through the first floating joint 251, which is used to drive the active clamp 230 to move along the longitudinal guide rail 211. The bottom support assembly 260 is set on the base plate 210 between the active clamp 230 and the passive clamp 240. The bottom support assembly 260 is provided with a bottom conductive plate 261 at the top. When the active clamp 230 and the passive clamp 240 clamp the square battery, the first conductive plate 231 and the second conductive plate 241 are respectively close to the two large surfaces of the square battery, and the bottom conductive plate 261 is close to the bottom surface of the square battery.

[0048] In some embodiments of the present invention, the active clamp 230 includes a first support base 232, the bottom of which is slidably mounted on the longitudinal guide rail 211, and the inner surface of the first support base 232 is provided with a first insulating plate 233 and a first conductive plate 231 from the outside to the inside.

[0049] In some embodiments of the present invention, the first support base 232 is an L-shaped rigid frame, including a first connecting base plate 235, a first vertical fixing plate 236 and a first reinforcing plate 237. The first connecting base plate 235 is slidably mounted on the longitudinal guide rail 211. The first vertical fixing plate 236 and the first reinforcing plate 237 are fixed on the first connecting base plate 235. The first reinforcing plate 237 is connected to the outer side of the first vertical fixing plate 236.

[0050] In some embodiments of the present invention, the passive clamp 240 includes a second support base 242, the bottom of which is slidably mounted on the longitudinal guide rail 211, and the inner surface of the second support base 242 is provided with a second insulating plate 243 and a second conductive plate 241 from the outside to the inside.

[0051] In some embodiments of the present invention, the second support base 242 is an L-shaped rigid frame, including a second connecting base plate 245, a second vertical fixing plate 246, and a second reinforcing plate 247. The second connecting base plate 245 is slidably mounted on the longitudinal guide rail 211. The second vertical fixing plate 246 and the second reinforcing plate 247 are fixed on the second connecting base plate 245. The second reinforcing plate 247 is connected to the outer side of the second vertical fixing plate 246.

[0052] In some embodiments of the present invention, the first vertical fixing plate 236 and the second vertical fixing plate 246 are arranged opposite to each other at intervals. The inner surface of the first vertical fixing plate 236 is sequentially provided with a first insulating plate 233 and a first conductive plate 231; the inner surface of the second vertical fixing plate 246 is sequentially provided with a second insulating plate 243 and a second conductive plate 241; the size of the first conductive plate 231 and the second conductive plate 241 is slightly larger than the large surface size of the square battery 400, and they are respectively used to contact the two large surfaces of the square battery 400.

[0053] In some embodiments of the present invention, the first support base 232 and the second support base 242 are slidably mounted on the longitudinal guide rail 211, allowing for flexible sliding with minimal friction. The outer side of the first support base 232 is connected to the first clamping cylinder 250 via a first floating joint 251. After the robotic arm places the square battery into the battery clamp 220 in the loading / unloading position, the first clamping cylinder 250 pushes the active clamp 230 to move. The active clamp 230, in turn, drives the passive clamp 240 to move in opposite directions via the gear and rack transmission assembly 270 at the bottom, achieving symmetrical opening and closing motion. The first conductive plate 231 of the active clamp 230 and the second conductive plate 241 of the passive clamp 240 are parallel and directly opposite each other, pressing the square battery 400 in the middle. After the battery clamp 220 clamps the square battery 400, the battery clamp 220 in the loading / unloading position moves together to the detection position. A vertical hitt detection section 330 is provided above the detection channel in the detection position, and length detection sections 340 are provided on both sides. After the battery clamping mechanism 200 holding the square battery 400 is moved into position, these mechanisms push the conductive blocks along a direction perpendicular to the measurement surface and press them onto the measurement surface of the square battery. The insulation resistance and insulation voltage of the battery surface are measured by connecting six conductive plates pressed onto the six surfaces of the square battery 400 to one measuring electrode and another measuring electrode to the negative terminal of the battery. In the specific layout of the testing mechanism, two sets of battery surface hit-pot detection mechanisms are symmetrically arranged. Through alternating positions, one set of battery surface hit-pot detection mechanisms is always measuring while the other is loading and unloading, thereby improving the overall cycle time of the device.

[0054] In some embodiments of the present invention, the gear and rack transmission assembly 270 is disposed between the active clamp 230 and the passive clamp 240, and includes a first rack 271, a second rack 272, and a gear 273. The first rack 271 and the second rack 272 are both arranged longitudinally. The outer end of the first rack 271 is connected to the active clamp 230, and the outer end of the second rack 272 is connected to the passive clamp 240. The gear 273 is rotatably disposed at the middle position of the base plate 210 between the active clamp 230 and the passive clamp 240. The base plate is movable via a linear guide rail at its bottom. The entire clamping assembly is mounted on the base plate. The first rack 271 and the second rack 272 are arranged on both sides of the gear 273, and the teeth of both the first rack 271 and the second rack 272 mesh with the teeth of the gear 273.

[0055] In some embodiments of the present invention, the first rack 271 is integrally formed with the active clamp 230. The second rack 272 is integrally formed with the passive clamp 240. Both the first rack 271 and the second rack 272 are horizontal and are respectively arranged on both sides of the gear 273 along the longitudinal direction. The active clamp 230 can slide on the longitudinal guide rail 211 under the push of the first clamping cylinder 250. When the active clamp 230 moves, it drives the first rack 271 to move synchronously. Since the first rack 271 meshes with the gear 273, it drives the gear 273 to rotate, causing the second rack 272 meshing with the gear 273 to move in the opposite direction to the first rack 271, driving the passive clamp 240 to move in the opposite direction to the active clamp 230, thereby jointly clamping or releasing the square battery in the battery clamping space.

[0056] In some embodiments of the present invention, a set of bottom support components 260 is provided on each of the two lateral sides of the gear 273. The bottom support components 260 include a bottom pad 262, a bottom insulating plate 263 and a bottom conductive plate 261 arranged sequentially from bottom to top. The bottom pad 262 is fixedly connected to the substrate 210, and the bottom conductive plate 261 is horizontal and used to be in close contact with the bottom surface of the square battery 400.

[0057] In some embodiments of the present invention, the detection support frame 310 includes a vertical reference plate 311, which is mounted on the base plate 110. The lower part of the vertical reference plate 311 is provided with a detection channel 312 for the battery large-face clamping mechanism 200 to pass through. One side of the vertical reference plate 311 is provided with a vertical guide rail 333 and several horizontal guide rails 334. The vertical guide rail 333 is mounted on the vertical reference plate 311 by a pad 301 and is located above the detection channel 312. The horizontal guide rails 334 are symmetrically arranged on both sides of the detection channel 312. The other side of the vertical reference plate 311 is provided with a side support plate 313 between it and the base plate 110 to support the vertical reference plate 311.

[0058] In some embodiments of the present invention, the battery hit-pot detection unit 320 includes a vertical hit-pot detection section 330, four sets of length detection sections 340, and two sets of electrode pressing detection sections 350. The vertical hit-pot detection section 330 is located above the detection channel 312, and the four sets of length detection sections 340 and the two sets of electrode pressing detection sections 350 are symmetrically arranged on both sides of the transverse direction of the detection channel 312. The detection ends of the vertical hit-pot detection section 330, the length detection section 340, and the electrode pressing detection section 350 are respectively aligned with the top surface, side surface, and electrode of the square battery in the battery clamping section 220 at the detection station. Specifically, the two sets of length detection sections 340 are located on both sides of the battery's length direction, and their contact portion with the battery is bifurcated, avoiding the electrodes and pressing against the battery surface on both sides of the electrodes. Each set has an independent cylinder and guide rail. The two sets of electrode pressing detection sections 350 also have independent cylinders and guide rails, pressing against both sides of the electrodes in the length direction.

[0059] In some embodiments of the present invention, the electrode clamping detection unit 350 is disposed between two sets of length detection units 340 and connected to one of the sets of length detection units 340, so as to realize the synchronous movement of the electrode clamping detection unit 350 and the length detection unit 340.

[0060] In some embodiments of the present invention, the vertical hito detection unit 330 includes a second clamping cylinder 331 and a vertical sliding seat 332. The second clamping cylinder 331 is vertically disposed on the cylinder pad 313 on the outer side of the vertical reference plate 311. The vertical sliding seat 332 is slidably disposed on the vertical guide rail 333. The vertical sliding seat 332 is connected to the lifting end of the second clamping cylinder 331 through a second floating joint 335. The bottom of the vertical sliding seat 332 is provided with a horizontal transverse pressing edge 336. The bottom of the transverse pressing edge 336 is sequentially provided with a first transverse insulating plate 337 and a transverse conductive plate 338 from top to bottom. The transverse conductive plate 338 is electrically connected to the hito measuring instrument. When the battery large surface clamping mechanism 200 moves to the detection channel 312, the transverse conductive plate 338 is used to contact the top surface of the square battery.

[0061] In some embodiments of the present invention, there are four sets of length detection units 340, arranged symmetrically in pairs on both sides of the transverse direction of the detection channel 312. Each set includes a third clamping cylinder 341 and a first horizontal sliding seat 342. The third clamping cylinder 341 is horizontally disposed on the outer side of the vertical reference plate 311. The first horizontal sliding seat 342 is slidably disposed on the corresponding transverse guide rail 334. The first horizontal sliding seat 342 is connected to the pushing end of the third clamping cylinder 341 through a fourth floating joint 345. A second transverse insulating plate 347 and a transverse conductive plate 348 are sequentially mounted on the side of the first horizontal sliding seat 342 facing the detection channel. The transverse conductive plate 348 is electrically connected to the Hipot measuring instrument. When the battery large-face clamping mechanism 200 moves to the detection channel 312, the transverse conductive plate 348 is used to contact the transverse side of the square battery.

[0062] In some embodiments of the present invention, the electrode clamping detection unit 350 includes a second horizontal sliding seat 351, a third transverse insulating plate 352, and an electrode conductive block 353. The second horizontal sliding seat 351 is slidably disposed on the corresponding transverse guide rail 334 and fixedly connected to one of the first horizontal sliding seats 342. The third transverse insulating plate 352 and the electrode conductive block 353 are sequentially disposed on the side of the first horizontal sliding seat 342 facing the detection channel. The electrode conductive block 353 is electrically connected to the Hipot measuring instrument. When the battery large-face clamping mechanism 200 moves to the detection channel 312, the electrode conductive block 353 is used to contact the electrodes of the square battery 400.

[0063] In the square battery hitpot detection device of the present invention, two sets of battery large-area clamping mechanisms 200 and two sets of battery large-area hitpot detection mechanisms 300 are provided on the bottom plate 110 of the bottom support mechanism 100. The first clamping cylinder 250 of the battery large-area clamping mechanism 200 is installed outward. The active clamp 230 and the passive clamp 240 of the battery large-area clamping mechanism 200 are connected together through the gear and rack transmission assembly 270 and installed on two longitudinal guide rails 211. They are pushed by the shifting drive cylinder 120 and can be shifted to two positions: a detection position and a loading / unloading position. The detection position is at the detection channel 312 of the battery large-area hitpot detection mechanism 300, and the loading / unloading position is located next to the detection channel 312 and can be set between two adjacent sets of battery large-area hitpot detection mechanisms 300. During operation, when the first set of battery large-area clamping mechanisms 200 is in the detection position, the second set of battery large-area clamping mechanisms 200 is in the loading / unloading position; when the first set of large-area hipot measuring components is in the loading / unloading position, the second set of battery large-area clamping mechanisms 200 is in the detection position. This ensures that the two sets of battery large-area clamping mechanisms 200 alternate positions, with one set always measuring and the other loading / unloading, thereby improving the overall system cycle time.

[0064] Specifically, when the first battery large-area clamping mechanism 200 is in the middle loading / unloading position, and the second battery large-area clamping mechanism 200 is in the detection position, the battery is placed into the battery clamping part 220 of the first battery large-area clamping mechanism 200. The opening clamp of the battery clamping part 220 closes and clamps, and the position driving cylinder 120 is activated, causing the first battery large-area clamping mechanism 200 to be moved from the loading / unloading position to the detection position. The battery large-area hito detection unit 320 starts to operate. The cylinders of the length detection part 340, the vertical hito detection part, and the electrode pressing detection part all extend towards the detection channel 312, pressing the corresponding conductive plates onto the surface of the square battery. The first conductive plate, the second conductive plate, two first transverse conductive plates, two second transverse conductive plates, the bottom conductive plate (a total of 6 conductive plates), the square battery electrode, and the electrode conductive block are connected to the hito measuring instrument. The data of the hito measuring instrument is read, and the insulation resistance and insulation voltage are recorded. During the measurement process, the battery clamping mechanism placed at the loading and unloading position can load and unload the battery. Once the testing at the detection position is completed, the battery can be moved to a different position.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A square battery hitpot detection device, characterized in that: It includes a bottom support mechanism (100), at least one set of battery large surface clamping mechanism (200) and at least one set of battery large surface hitpot detection mechanism (300); each set of battery large surface clamping mechanism (200) corresponds to one set of battery large surface hitpot detection mechanism (300), the battery large surface clamping mechanism (200) is slidably arranged on the bottom support mechanism (100), the battery large surface hitpot detection mechanism (300) is arranged at intervals relative to each other on the bottom support mechanism (100), and the battery large surface hitpot detection mechanism (300) is provided with a detection channel (312) for the battery large surface clamping mechanism (200) to pass through; the detection position is at the detection channel (312) of the battery large surface hitpot detection mechanism (300), and the loading and unloading position is located next to the detection channel (312); The bottom support mechanism (100) includes a base plate (110) and a shifting drive cylinder (120). The base plate (110) is provided with a horizontal slide rail (111). The extension direction of the axis of the horizontal slide rail (111) is defined as longitudinal, and the horizontal direction perpendicular to the longitudinal direction is defined as transverse. The shifting drive cylinder (120) is set on the base plate (110). The movable end of the shifting drive cylinder (120) is connected to the battery large surface clamping mechanism (200) through a third floating joint (121) for driving the battery large surface clamping mechanism (200) to switch between the loading / unloading position and the detection position. The battery large-area clamping mechanism (200) is longitudinally arranged on the base plate (110) and includes a base plate (210) and a battery clamping part (220). The base plate of at least one battery large-area clamping mechanism is connected to the actuating end of the shifting drive cylinder (120) through a third floating joint (121). The base plate (210) is slidably mounted on the horizontal slide rail (111), and the battery clamping part (220) is slidably arranged on the longitudinal guide rail (211). The battery large-area hito detection mechanism (300) is longitudinally arranged on the base plate (110) and includes a detection support frame (310) and a battery large-area hito detection unit (320). The detection support frame (310) has a vertical reference plate (311). The lower part of the vertical reference plate (311) is provided with a detection channel (312). The horizontal slide rail (111) passes through the detection channel (312). The battery large-area hito detection unit (320) is arranged on the vertical reference plate (311). The detection end of the battery large-area hito detection unit (320) for contacting the surface and electrodes of the square battery, and the surface of the battery clamping part (220) for contacting the surface of the square battery are provided with conductive plates. The conductive plates are electrically connected to one measuring electrode of the hito measuring instrument. The other measuring electrode of the hito measuring instrument is connected to the negative electrode of the square battery for measuring the insulation resistance and insulation voltage of the battery surface.

2. The square battery hitpot detection device as described in claim 1, characterized in that: The battery clamping part (220) is a clamping mechanism with the jaws facing upwards, including an active clamping body (230), a passive clamping body (240), a first clamping cylinder (250), and a bottom support assembly (260). The active clamping body (230) and the passive clamping body (240) are spaced apart and opposite to each other on the longitudinal guide rail (211) on the substrate (210). A battery clamping space is left between the active clamping body (230) and the passive clamping body (240) to define the battery. In the clamping part (220), the direction in which the active clamp (230) and the passive clamp (240) approach each other is the inner side, and vice versa; the inner surface of the active clamp (230) facing the battery clamping space is provided with a first conductive plate (231), and the inner surface of the passive clamp (240) facing the battery clamping space is provided with a second conductive plate (241); the active clamp (230) is connected to the passive clamp (240) through a gear and rack transmission assembly (270), and through... The movement of the active clamp (230) drives the passive clamp (240) to move in the opposite direction to adjust the size of the battery clamping space; the first clamping cylinder (250) is set on the base plate (210), and the movable end of the first clamping cylinder (250) is connected to the connecting block (234) on the outside of the active clamp (230) through the first floating joint (251) to drive the active clamp (230) to move along the longitudinal guide rail (211); the bottom support assembly (260) is set on the base plate (210) between the active clamp (230) and the passive clamp (240), and the bottom support assembly (260) is provided with a bottom conductive plate (261) at the top. When the active clamp (230) and the passive clamp (240) clamp the square battery, the first conductive plate (231) and the second conductive plate (241) are respectively attached to the two large surfaces of the square battery, and the bottom conductive plate (261) is attached to the bottom surface of the square battery.

3. The square battery hitpot detection device as described in claim 2, characterized in that: The active clamp body (230) includes a first support base (232), the bottom of which is slidably mounted on the longitudinal guide rail (211), and the inner surface of the first support base (232) is provided with a first insulating plate (233) and a first conductive plate (231) from the outside to the inside.

4. The square battery hitpot detection device as described in claim 3, characterized in that: The passive clamp body (240) includes a second support base (242), the bottom of which is slidably mounted on the longitudinal guide rail (211), and the inner surface of the second support base (242) is provided with a second insulating plate (243) and a second conductive plate (241) from the outside to the inside.

5. The square battery hitpot detection device as described in claim 4, characterized in that: The gear and rack transmission assembly (270) is disposed between the active clamp body (230) and the passive clamp body (240), and includes a first rack (271), a second rack (272) and a gear (273). The first rack (271) and the second rack (272) are both arranged longitudinally. The outer end of the first rack (271) is connected to the active clamp body (230) and the outer end of the second rack (272) is connected to the passive clamp body (240). The gear (273) is rotatably disposed between the active clamp body (230) and the passive clamp body (240), and the first rack (271) and the second rack (272) are both meshed with the gear (273).

6. The square battery hitpot detection device as described in claim 1, characterized in that: The detection support frame (310) includes a vertical reference plate (311), which is mounted on the base plate (110). The lower part of the vertical reference plate (311) is provided with a detection channel (312) for the battery large-face clamping mechanism (200) to pass through. The outer side of the vertical reference plate (311) is provided with a vertical guide rail (333) and several horizontal guide rails (334). The vertical guide rail (333) is located above the detection channel (312), and the horizontal guide rails (334) are symmetrically arranged on both sides of the detection channel (312). A side support plate (313) is provided between the inner side of the vertical reference plate (311) and the base plate (110) to support the vertical reference plate (311).

7. The square battery hitpot detection device as described in claim 6, characterized in that: The battery large-area hit detection unit (320) includes a vertical hit detection section (330), multiple length detection sections (340), and two electrode clamping detection sections (350). The vertical hit detection section (330) is located above the detection channel (312), and the multiple length detection sections (340) and the two electrode clamping detection sections (350) are respectively arranged on both sides of the transverse direction of the detection channel (312). The detection ends of the vertical hit detection section (330), the length detection section (340), and the electrode clamping detection section (350) are respectively aligned with the top surface, side surface, and electrode of the square battery in the battery clamping part (220) at the detection station.

8. The square battery hitpot detection device as described in claim 7, characterized in that: The vertical Hipot detection unit (330) includes a second clamping cylinder (331) and a vertical sliding seat (332). The second clamping cylinder (331) is vertically disposed on the outer side of the vertical reference plate (311). The vertical sliding seat (332) is slidably disposed on the vertical guide rail (333). The vertical sliding seat (332) is connected to the lifting end of the second clamping cylinder (331) through a second floating joint (335). The bottom of the vertical sliding seat (332) is provided with a horizontal transverse pressing edge (336). The bottom of the transverse pressing edge (336) is provided with a first transverse insulating plate (337) and a first transverse conductive plate (338) from top to bottom. The first transverse conductive plate (338) is electrically connected to the Hipot measuring instrument. When the battery large surface clamping mechanism (200) moves to the detection channel (312), the first transverse conductive plate (338) is used to contact the top surface of the square battery.

9. A square battery hitpot detection device as described in claim 7, characterized in that: Two sets of length detection units (340) are symmetrically arranged on both sides of the detection channel (312). The units include a third clamping cylinder (341) and a first horizontal sliding seat (342). The third clamping cylinder (341) is horizontally arranged on the outer side of the vertical reference plate (311). The first horizontal sliding seat (342) is slidably arranged on the corresponding horizontal guide rail (334). The first horizontal sliding seat (342) is connected to the pushing end of the third clamping cylinder (341) through a fourth floating joint (345). The side of the first horizontal sliding seat (342) facing the detection channel is sequentially equipped with a second horizontal insulating plate (347) and a second horizontal conductive plate (348). The second horizontal conductive plate (348) is electrically connected to the Hipot measuring instrument. When the battery large-face clamping mechanism (200) moves to the detection channel (312), the second horizontal conductive plate (348) is used to contact the lateral side of the square battery.

10. A square battery hitpot detection device as described in claim 9, characterized in that: The electrode clamping detection unit (350) includes a second horizontal sliding seat (351), a third transverse insulating plate (352), and an electrode conductive block (353). The second horizontal sliding seat (351) is slidably mounted on the corresponding transverse guide rail (334) and is fixedly connected to one of the first horizontal sliding seats (342). The first horizontal sliding seat (342) is provided with a third transverse insulating plate (352) and an electrode conductive block (353) in sequence on the side facing the detection channel. The electrode conductive block (353) is electrically connected to the Hipot measuring instrument. When the battery large-face clamping mechanism (200) moves to the detection channel (312), the electrode conductive block (353) is used to contact the electrodes of the square battery (400).

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