Insulation testing equipment and insulation testing method for battery pack cooling plate

Abstract

The present disclosure discloses an insulation detection device and an insulation detection method for a battery pack cooling plate. A specific embodiment of the insulation detection device includes: a detection position for placing the battery pack cooling plate, wherein the battery pack cooling plate is hollow and an insulating coating is applied to the outer surface of the battery pack cooling plate; conductive cotton, arranged in the detection position, for wrapping the battery pack cooling plate; a first conductive member connected to the inner wall of the battery pack cooling plate; a second conductive member connected to the conductive cotton; an insulation detector, a first end of which is connected to the first conductive member, and a second end of which is connected to the second conductive member. Thus, a new insulation detection device and method are provided.

Description

Technical Field

[0001] The present disclosure relates to the field of new energy technology, and in particular to an insulation detection device and an insulation detection method for a battery pack cooling plate. Background Art

[0002] With the shortage of traditional energy and the increasing severity of environmental issues, the development of new energy vehicles (NEVs) as an alternative to traditional vehicles has become a hot topic of concern. The importance of safety in battery packs, as core components of NEVs, is evident.

[0003] The working principle of the battery pack cooling plate is as follows: the excess heat generated by the battery is transferred through contact with the surface of the battery pack cooling plate. The liquid cooling system uses the large heat transfer coefficient of liquid flow to transfer high heat by liquid flow, and is eventually carried away by the coolant passing through the internal flow channel of the device. Summary of the Invention

[0004] This disclosure section is provided to briefly introduce concepts that will be described in detail in the detailed description section below. This disclosure section is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] In a first aspect, an embodiment of the present disclosure provides an insulation detection device for a battery pack cooling plate, comprising: a detection position for placing the battery pack cooling plate, wherein the battery pack cooling plate is hollow and an insulating coating is applied to the outer surface of the battery pack cooling plate; conductive cotton, arranged in the detection position, for wrapping the battery pack cooling plate; a first conductive member, connected to the inner wall of the battery pack cooling plate; a second conductive member, connected to the conductive cotton; and an insulation tester, a first end of which is connected to the first conductive member, and a second end of which is connected to the second conductive member.

[0006] In a second aspect, an embodiment of the present disclosure provides an insulation detection method for a battery pack cooling plate, comprising: placing a battery pack cooling plate wrapped with conductive cotton into a detection position, wherein the battery pack cooling plate is hollow and an insulating coating is applied to the outer surface of the battery pack cooling plate; connecting a first conductive member to an inner wall of the battery pack cooling plate; connecting a second conductive member to the conductive cotton; connecting a first end of an insulation tester to the first conductive member, and connecting a second end of the insulation tester to the second conductive member; turning on the insulation tester, and determining the insulation strength of the insulating coating of the battery pack cooling plate based on the measurement value of the insulation tester.

[0007] The insulation testing device and method for a battery pack cooling plate provided in the embodiments of the present disclosure employ a testing position in which conductive cotton, used to wrap the battery pack cooling plate, is placed. The two ends of an insulation tester are connected to the conductive cotton and the inner wall of the battery pack testing plate, respectively, via a first conductive member and a second conductive member. This allows the insulation tester to test whether an electrical path can be formed between the inner and outer surfaces of the battery pack cooling plate, thereby determining the insulation level of the battery pack cooling plate's insulating coating.

[0008] Specifically, if there are defects in the insulating coating on the outer surface of the battery pack, causing the battery pack cooling plate to be connected to the conductive cotton, the resistance between the inner wall of the battery pack cooling plate and the conductive cotton is small, and an electrical path can be formed; if there are no defects in the insulating coating on the outer surface of the battery pack cooling plate, there is no connection between the inner wall of the battery pack cooling plate and the conductive cotton, and the resistance between the battery pack cooling plate and the conductive cotton is large, which can be considered to be insulated. Therefore, the insulation of the outer surface of the battery pack cooling plate can be accurately detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

[0010] Figure 1 is a structural schematic diagram of an embodiment of an insulation detection device according to the present disclosure;

[0011] Figure 2 is a schematic structural diagram of a battery pack cooling plate according to the present disclosure;

[0012] Figure 3 is a structural schematic diagram of an embodiment of an insulation detection device according to the present disclosure;

[0013] Figure 4 is a structural schematic diagram of an embodiment of an insulation detection device according to the present disclosure;

[0014] Figure 5 is a flow chart of an embodiment of an insulation detection method according to the present disclosure;

[0015] Among them, 1-detection position, 11-base plate, 12-cover plate, 13-baffle; 2-battery pack cooling plate, 21-first surface, 22-second surface; 3-conductive cotton; 4-insulation tester; 5-pressing device, 51-first type pressure component, 521-pressing cylinder, 522-sleeve, 531-sliding shaft, 532-spring, 533-slide; 61-first conductive part, 62-second conductive part. DETAILED DESCRIPTION

[0016] The following describes embodiments of the present disclosure in more detail with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0017] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0018] As used herein, the term "including" and its variations are open-ended, i.e., "including but not limited to." The term "based on" means "based, at least in part, on." The term "one embodiment" means "at least one embodiment," the term "another embodiment" means "at least one additional embodiment," and the term "some embodiments" means "at least some embodiments." Other terms are defined in the following description.

[0019] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0020] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0021] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0022] Please refer to Figure 1 , which shows a schematic diagram of an embodiment of an insulation detection device for a battery pack cooling plate according to the present disclosure. Figure 1 The insulation detection device shown may include: a detection position 1, conductive cotton 3, an insulation detector 4, a first conductive member 61, and a second conductive member 62.

[0023] In this embodiment, detection position 1 is used to place the battery pack cooling plate 2.

[0024] Here, the battery pack cooling plate is hollow, and an insulating coating is applied on the outer surface of the battery pack cooling plate.

[0025] Here, the detection position can be in the shape of a long strip and a groove. The detection position can be made of an insulating material; for example, the detection position can be made of a bakelite board, which has the characteristics of insulation, no static electricity generation, wear resistance and high temperature resistance.

[0026] In some embodiments, please refer to Figure 1 The detection position 1 may include a base plate 11 and a cover plate 12. The base plate 11 and the cover plate 12 may both be made of insulating materials.

[0027] In some embodiments, the inspection sites may be placed on an inspection stage substrate.

[0028] Optionally, the detection position may also include side panels, and the structure surrounded by the bottom plate, side panels and cover plate is in the form of a cube, which is hollow. The hollow position of the detection position can be used to place a battery pack cooling plate wrapped with conductive cotton.

[0029] In this embodiment, the conductive cotton 3 can be set in the detection position to wrap the battery pack cooling plate.

[0030] In some embodiments, the conductive cotton may include first-direction conductive cotton and second-direction conductive cotton. The first-direction conductive cotton may contact the bottom plate and cover plate of the detection position, and is therefore also referred to as upper and lower conductive cotton. The second-direction conductive cotton may contact the side plates of the detection position, and is therefore also referred to as left and right conductive cotton.

[0031] In this embodiment, the first conductive member 61 is connected to the inner wall of the battery pack cooling plate; the second conductive member 62 is connected to the conductive cotton.

[0032] It can be understood that the conductive cotton wraps the outer surface of the battery pack cooling plate, and the second conductive member is connected to the conductive cotton. It can be understood that the second conductive member and the insulating coating applied on the outer surface of the battery pack cooling plate can be in repeated contact.

[0033] As an example, the first conductive member may be any form of conductive medium extending from the inner wall of the battery pack cooling plate.

[0034] As an example, the second conductive member may be any form of conductive medium directly or indirectly connected to the conductive cotton.

[0035] In this embodiment, the insulation tester has a first end connected to the first conductive member, and a second end connected to the second conductive member.

[0036] Here, the first end of the insulation tester can be electrically connected to the inner wall of the battery pack cooling plate, and the second end can be in full contact with the insulating coating applied on the outer surface of the battery pack cooling plate; if a defect appears at any position of the insulating coating (causing the insulation effect to deteriorate), the second end can be electrically connected to the outer surface of the battery pack cooling plate at the defect position through the conductive cotton. In addition, if the base material of the battery pack cooling plate is made of alloy material (conductive), then the second end can be electrically connected to the inner wall of the battery pack cooling plate.

[0037] It should be noted that the insulation testing device for the battery pack cooling plate provided in this embodiment has a testing position in which conductive cotton, used to wrap the battery pack cooling plate, is placed. The two ends of the insulation tester are connected to the conductive cotton and the inner wall of the battery pack testing plate, respectively, via a first conductive member and a second conductive member. This allows the insulation tester to test whether an electrical path can be formed between the outer surface of the battery pack and the insulating coating on the inner wall of the pack cooling plate, thereby determining the insulation level of the insulating coating on the battery pack cooling plate.

[0038] Specifically, if there are defects in the insulating coating on the outer surface of the battery pack, causing the battery pack cooling plate substrate to be connected to the conductive cotton, the resistance between the inner wall of the battery pack cooling plate and the conductive cotton is small, and an electrical path can be formed; if there are no defects in the insulating coating on the outer surface of the battery pack cooling plate, there is no connection between the inner wall of the battery pack cooling plate and the conductive cotton, and the resistance between the battery pack cooling plate and the conductive cotton is large, which can be considered to be insulated. Therefore, the insulation of the outer surface of the battery pack cooling plate can be accurately detected.

[0039] Optionally, the insulation requirements can be set according to the actual application scenario. In some embodiments, the preset requirements may include: insulation voltage ≥ 4KV, leakage current ≤ 0.5MA.

[0040] In some embodiments, the insulation detection device may include at least two detection positions.

[0041] Optionally, the positional relationship between the at least two detection positions may be set according to actual application scenarios.

[0042] In some embodiments, the at least two detection positions are arranged in parallel in the horizontal direction, or the at least two detection positions are arranged in parallel in the vertical direction.

[0043] It should be noted that, by setting at least two detection positions, batch detection of battery pack cooling plates can be achieved, thereby improving the speed of detecting battery pack cooling plates.

[0044] In some embodiments, the battery pack cooling plate may include a first surface and a second surface, and a width of the first surface may be greater than a width of the second surface.

[0045] In some embodiments, the groove width of the detection site can match the width of the first surface.

[0046] Please refer to Figure 2 , Figure 2 An exemplary structural schematic diagram of a battery pack cooling plate is shown in FIG.

[0047] exist Figure 2 In the embodiment, the width of the first surface 21 of the battery pack cooling plate may be greater than the width of the second surface 22 of the battery pack cooling plate. As an example, Figure 2 The second surface 22 is wavy, and the width of the wavy second surface can be determined by the following method: use two plates close to the two first surfaces of the battery pack cooling plate, and the distance between the two plates can be used as the width of the second surface.

[0048] Here, the groove width of the detection position matches the width of the first surface, and may include the groove width being slightly larger than the width of the first surface.

[0049] In some embodiments, the groove width of the detection site can match the width of the second surface.

[0050] Here, the groove width of the detection position matches the width of the second surface, and may include the groove width being slightly larger than the width of the second surface.

[0051] Optionally, the shape of the notch of the detection position may match the shape of the second surface, or the shape of the notch may be rectangular.

[0052] In some embodiments, as Figure 1 The insulation detection device shown in the figure also includes a pressing device 5. The pressing device can be used to increase the contact tightness between the conductive cotton and the battery pack cooling plate.

[0053] As an example, Figure 1 The pressing device 5 can transmit pressure to the cover plate 12, and the cover plate 12 can press the conductive cotton toward the battery pack cooling plate.

[0054] Specifically, if the conductive cotton is not in sufficient contact with the insulating coating on the outer surface of the battery pack cooling plate, the insulating coating defect may not be detected during insulation testing.

[0055] In some embodiments, the pressing device may include a pressing member and a pressure transmitting member.

[0056] Here, the pressurizing method of the pressurizing member can be set according to the actual application scenario and is not limited here. As an example, the pressurizing member can be manually pressurized or automatically pressurized by an instrument.

[0057] In some embodiments, the pressurizing member may include a first type of pressurizing member, which may be a manual clamp.

[0058] In some embodiments, the pressurizing member may include a second type of pressurizing member, which may include a pressing cylinder and a sliding sleeve. The sliding sleeve may cooperate with the sliding shaft.

[0059] In some embodiments, if the number of the detection position is one, the pressurizing member may include a manual clamp, and the pressure transmitting member may include a gasket in contact with the cover plate.

[0060] In some embodiments, if there are multiple detection sites, the pressurizing member may include a second type of pressurizing member.

[0061] Here, the specific implementation of the pressure transmission component can be set according to the actual application scenario. In some embodiments, the pressure transmission component can include but is not limited to at least one of the following: a sliding shaft, a slideway, and a spring.

[0062] Here, the sliding shaft passes through at least two detection positions, and a spring is sleeved on the sliding shaft between adjacent detection positions; when the detection position moves along the sliding shaft, the slideway is used to assist in positioning the detection position.

[0063] For example, when a pressure member applies pressure to parallel detection positions, the baffles are three-dimensional, and the sliding shaft and slideway can control the sliding direction of the baffles between the detection positions, causing the baffles to move along the sliding shaft and slideway. The springs between the detection positions (or the springs between the baffles) can support the adjacent baffles. Under pressure, the distance between the baffles decreases.

[0064] In some embodiments, the insulation testing device may have one or more pressurizing components, which may be of the same or different types. The insulation testing device may also have one or more pressure transmitting components, which may be of the same or different types.

[0065] Please refer to Figure 3 , which shows a schematic diagram of an embodiment of an insulation detection device for a battery pack cooling plate according to the present disclosure.

[0066] like Figure 3 The insulation detection device shown in FIG. 1 has detection positions arranged in parallel in a horizontal direction. Figure 3 A top view of the insulation testing device in working state is shown.

[0067] Optionally, the battery pack cooling plate in the detection position may be placed vertically, that is, the first surface of the battery pack cooling plate is parallel to the vertical direction, and the second surface of the battery pack cooling plate is parallel to the horizontal direction.

[0068] Optionally, the battery pack cooling plate in the detection position can be placed horizontally, that is, the second surface of the battery pack cooling plate is parallel to the vertical direction, and the first surface of the battery pack cooling plate is parallel to the horizontal direction.

[0069] like Figure 3 , Figure 3 , it is shown that the first surface of the battery pack cooling plate is parallel to the horizontal direction, and the second surface is parallel to the vertical direction.

[0070] Figure 3 The detection position shown may include a bottom plate ( Figure 3 ), cover plate 12, and baffle 13. The base plate is located below each detection station; each detection station can share the same base plate, or each detection station's base plate can be independent of each other. The cover plate is located above each detection station; each detection station can share the same cover plate, or each detection station's cover plate can be independent of each other. Upper and lower adjacent detection stations can be separated by baffles.

[0071] The battery pack cooling plate 2 to be tested can be placed in the testing position. Optionally, the battery pack cooling plate can be placed in the testing position first, and then the testing position can be assembled; or the testing position can be assembled first, and then the battery pack cooling plate can be placed in the testing position from the side.

[0072] The battery pack cooling plate in the detection position may be wrapped with conductive cotton 3.

[0073] Optional, Figure 3 The insulation detection device shown may include a pressing device, which may include a first type pressurizing member 51 and a pressure transmitting member.

[0074] Optionally, the first type of pressurizing member may include one or more compression clips.

[0075] In this embodiment, the pressure transmitting member may include a sliding shaft 531 , a spring 532 and a bolt.

[0076] Figure 3 The insulation testing equipment shown can clamp the conductive cotton and the battery pack cooling plate in the horizontal direction through the first type of pressure member 51 after the battery pack cooling plate wrapped with conductive cotton is placed in the testing position, and can also clamp the conductive cotton and the battery pack cooling plate in the vertical direction through the first type of pressure member set in the vertical direction.

[0077] It should be noted that Figure 3 The insulation testing equipment provided has various testing positions arranged horizontally, thereby making it possible to quickly place the battery pack cooling plate to be tested into the testing position and quickly start testing; moreover, it is possible to simultaneously test multiple battery pack cooling plates, thereby improving testing efficiency.

[0078] Please refer to Figure 4 , which shows a schematic diagram of an embodiment of an insulation detection device for a battery pack cooling plate according to the present disclosure. Figure 4 The insulation detection device shown in FIG. 1 has detection positions arranged in parallel in the vertical direction.

[0079] Optionally, the battery pack cooling plate in the detection position may be placed vertically, that is, the first surface of the battery pack cooling plate is parallel to the vertical direction, and the second surface of the battery pack cooling plate is parallel to the horizontal direction.

[0080] Optionally, the battery pack cooling plate in the detection position can be placed horizontally, that is, the second surface of the battery pack cooling plate is parallel to the vertical direction, and the first surface of the battery pack cooling plate is parallel to the horizontal direction.

[0081] like Figure 4 , Figure 4 , it is shown that the first surface of the battery pack cooling plate is parallel to the horizontal direction, and the second surface is parallel to the vertical direction.

[0082] Figure 4 The detection position shown in FIG may include a bottom plate 11, a cover plate 12 and a baffle 13. The bottom plate is located below the detection position of the lowest layer, and the cover plate is located above the detection position of the uppermost layer. The upper and lower adjacent detection positions can be isolated by the baffle.

[0083] The battery pack cooling plate 2 to be tested can be placed in the testing position. Optionally, the battery pack cooling plate can be placed in the testing position and then assembled; or the testing position can be assembled first and then the battery pack cooling plate can be placed in the testing position from the side.

[0084] Here, the battery pack cooling plate in the detection position may be wrapped with conductive cotton 3 .

[0085] Optional, Figure 4 The shown pressing device may include a second type of pressing member and a pressure transmitting member.

[0086] like Figure 4 As shown, the second type of pressurizing component may include a pressing cylinder 521 and a sliding sleeve 522 .

[0087] like Figure 4 As shown, the pressure transmitting member may include a sliding shaft 531 , a spring 532 , and a slideway 533 .

[0088] Optional, Figure 4The insulation testing equipment shown can first place the battery pack cooling plate wrapped with conductive cotton in the lowest testing position, then place a baffle above the lowest testing position, then place the battery pack cooling plate wrapped with conductive cotton on the baffle, and then place the baffle again, and repeat this cycle until a cover plate is placed on the top testing position. Then, the conductive cotton and the battery pack cooling plate can be clamped vertically using a vertical pressure member and a pressure transmission member. After that, the conductive cotton and the battery pack cooling plate can be clamped horizontally using a horizontal pressure member and a pressure transmission member.

[0089] Figure 4 The first conductive member 61 can be electrically connected to the inner wall of the battery pack cooling plate and connected to the first end of the insulation tester through the sliding shaft. The second end of the insulation tester is connected to the conductive cotton.

[0090] It should be noted that Figure 4 The insulation testing equipment provided has various testing positions arranged in parallel in the vertical direction, thereby enabling simultaneous testing of multiple battery pack cooling plates, thereby improving testing efficiency. In addition, the vertically parallel testing positions can detect the floor space occupied by the insulation testing equipment, thereby reducing the requirements for the use site of the insulation testing equipment and improving the convenience of using the insulation testing equipment.

[0091] Please refer to Figure 5 , which shows an exemplary process of an embodiment of the insulation detection method according to the present disclosure. The insulation detection method can be applied to the insulation detection devices provided in other embodiments of the present application.

[0092] Figure 5 The exemplary process shown may include step 501 , step 502 , step 503 , step 504 and step 505 .

[0093] Step 501: Place the battery pack cooling plate wrapped with conductive cotton into the detection position.

[0094] Here, the battery pack cooling plate is hollow, and an insulating coating is applied on the outer surface of the battery pack cooling plate.

[0095] Step 502: Connect the first conductive member to the inner wall of the battery pack cooling plate.

[0096] Optionally, the above connection may be a direct connection or an indirect connection.

[0097] Step 503: Connect the second conductive member to the conductive cotton.

[0098] Step 504: Connect the first end of the insulation tester to the first conductive member, and connect the second end of the insulation tester to the second conductive member.

[0099] Step 505 , turning on the insulation tester, and determining the insulation strength of the insulation coating of the battery pack cooling plate based on the measurement value of the insulation tester.

[0100] In some embodiments, the insulation detection device includes at least two detection positions arranged in parallel in a vertical direction.

[0101] The step 501 may include: placing the battery pack cooling plate wrapped with conductive cotton into the bottom detection position; placing a baffle above the bottom detection position; placing the battery pack cooling plate wrapped with conductive cotton on the baffle and placing the baffle, and repeating the steps of placing the battery pack cooling plate and placing the baffle until a cover is placed on the top detection position.

[0102] In some embodiments, the insulation detection equipment pressing device is used to increase the contact tightness between the conductive cotton and the battery pack cooling plate.

[0103] In some embodiments, the insulation detection method further includes: clamping the conductive cotton and the battery pack cooling plate in the horizontal direction by a clamping device arranged in the horizontal direction; clamping the conductive cotton and the battery pack cooling plate in the vertical direction by a clamping device arranged in the vertical direction.

[0104] It should be noted that the insulation detection method provided in this embodiment can conveniently and quickly operate the insulation detection equipment, thereby realizing rapid and accurate detection of the insulation strength of the battery pack cooling plate.

[0105] Specifically, if there are defects in the insulating coating on the outer surface of the battery pack, causing the battery pack cooling plate substrate to be connected to the conductive cotton, the resistance between the inner wall of the battery pack cooling plate and the conductive cotton is small, and an electrical path can be formed; if there are no defects in the insulating coating on the outer surface of the battery pack cooling plate, there is no connection between the inner wall of the battery pack cooling plate and the conductive cotton, and the resistance between the battery pack cooling plate and the conductive cotton is large, which can be considered to be insulated. Therefore, the insulation of the outer surface of the battery pack cooling plate can be accurately detected.

[0106] The above description is merely a preferred embodiment of the present disclosure and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this disclosure.

[0107] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details have been included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0108] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

Claims

1. An insulation detection device for a battery pack cooling plate, characterized in that: include: A detection position is used to place a battery pack cooling plate, wherein the battery pack cooling plate is hollow and an insulating coating is applied to the outer surface of the battery pack cooling plate; the insulation detection device includes at least two detection positions; Conductive cotton, arranged in the detection position and used to wrap the battery pack cooling plate; a first conductive member connected to the inner wall of the battery pack cooling plate; a second conductive member connected to the conductive cotton; an insulation tester having a first end connected to the first conductive member and a second end connected to the second conductive member; A pressing device is used to increase the contact tightness between the conductive cotton and the battery pack cooling plate; wherein the pressing device includes: a pressing member and a pressure transmitting member; Among them, the pressure transmission component includes: a sliding shaft, a slideway and a spring; the sliding shaft passes through at least two detection positions, and a spring is sleeved on the sliding shaft between adjacent detection positions; when the detection position moves along the sliding shaft, the slideway is used to assist in positioning the detection position.

2. The insulation detection device according to claim 1, characterized in that: The at least two detection positions are arranged in parallel in the horizontal direction, or the at least two detection positions are arranged in parallel in the vertical direction.

3. The insulation detection device according to any one of claims 1 to 2, characterized in that: The battery pack cooling plate includes a first surface and a second surface, wherein the width of the first surface is greater than the width of the second surface; The groove width of the detection position matches the width of the first surface, or the groove width of the detection position matches the width of the second surface.

4. The insulation detection device according to claim 1, characterized in that: The pressurizing member includes at least one of the following: a first type of pressurizing member and a second type of pressurizing member; Among them, the first type of pressurizing components are pressurized manually, and the second type of pressurizing components are pressurized by mechanical power.

5. A method for detecting insulation of a battery pack cooling plate, characterized in that: The insulation detection method is applied to the insulation detection device according to any one of claims 1 to 4, and The insulation detection method comprises: Place a battery pack cooling plate wrapped with conductive cotton into the inspection position, wherein the battery pack cooling plate is hollow and an insulating coating is applied on the outer surface of the battery pack cooling plate; Connecting the first conductive member to the inner wall of the battery pack cooling plate; Connecting the second conductive member to the conductive cotton; Connecting a first end of the insulation tester to the first conductive member, and connecting a second end of the insulation tester to the second conductive member; Turning on the insulation tester and determining the insulation strength of the insulation coating of the battery pack cooling plate according to a measurement value of the insulation tester; The insulation detection device includes at least two detection positions arranged in parallel in a vertical direction; and placing the battery pack cooling plate wrapped with conductive cotton into the detection position includes: Place the battery pack cooling plate wrapped with conductive cotton into the bottom detection position; Place a baffle above the bottom detection position: Place a battery pack cooling plate wrapped with conductive cotton on the baffle and place the baffle, and repeat the steps of placing the battery pack cooling plate and placing the baffle until the cover is placed on the topmost detection position.

6. The insulation detection method according to claim 5, characterized in that: The insulation testing device includes a pressing device for increasing the contact tightness between the conductive cotton and the battery pack cooling plate; as well as The insulation detection method further comprises: The conductive cotton and the battery pack cooling plate are clamped in the horizontal direction by a horizontally arranged pressing device; The conductive cotton and the battery pack cooling plate are clamped in the vertical direction by a clamping device arranged in the vertical direction.

Images