Over-current temperature rise test tool and over-current temperature rise test device

Abstract

The utility model relates to the technical field of batteries, in particular to an over-current temperature rise test tool and an over-current temperature rise test device. An over-current temperature rise test tool in the over-current temperature rise test device has a conductive function, the over-current temperature rise test tool comprises a mounting plate and two groups of clamping assemblies, the two groups of clamping assemblies are mounted on the mounting plate at intervals along the length direction of a connecting sheet, and an accommodating space for accommodating the connecting sheet is formed between the two groups of clamping assemblies. The relative positions of the two sets of clamping assemblies in the length direction of the connecting piece are adjustable, each set of clamping assembly comprises a bearing piece and a pressing piece which are oppositely arranged, the pressing pieces, the bearing pieces and the mounting plates are sequentially stacked, and the bearing pieces and the pressing pieces jointly clamp and fix one end of the connecting piece in the length direction. The connecting pieces with different lengths can be clamped and fixed, when the two sets of clamping assemblies jointly clamp and fix the two ends of the connecting pieces in the length direction, the middle area of the connecting pieces can be arranged on the mounting plate in a suspended mode, and a gap exists between the middle area of the connecting pieces and the mounting plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially, relates to overcurrent temperature rise test frock and overcurrent temperature rise testing device. BACKGROUND

[0002] The connecting piece of the battery is used for connecting the positive and negative poles of the battery, and the conventional battery connecting piece is connected with the positive and negative poles at two ends along the length direction to realize the transmission of current. In the actual operation process, the connecting piece is easy to heat. In order to improve the use safety of the connecting piece, the overcurrent temperature rise test needs to be carried out on the connecting piece. The existing overcurrent temperature rise testing device comprises an upper clamp and a lower clamp oppositely arranged along the up-down direction, the upper clamp and the lower clamp are respectively clamped and fixed at two ends of the connecting piece along the length direction, and any one of the upper clamp and the lower clamp is a current generating end, and the other is a current recovery end, so as to simulate the flow direction of current in the connecting piece in the actual operation.

[0003] The connecting piece is developed, the center area of the connecting piece is connected with the battery roll core, and the two ends of the connecting piece along the length direction are connected with the battery shell. In the actual working process of the battery, the current flows into the connecting piece from the center area of the connecting piece and flows out from the two ends of the connecting piece along the length direction. The current flow direction in the connecting piece is different from the current flow direction in the existing connecting piece, and the existing overcurrent temperature rise testing device cannot carry out the overcurrent temperature rise test on the connecting piece.

[0004] Therefore, it is urgent to invent the overcurrent temperature rise test frock and the overcurrent temperature rise testing device to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing overcurrent temperature rise test frock and overcurrent temperature rise testing device to realize the overcurrent temperature rise test on the connecting piece for supplying current from the center area to the two ends along the length direction.

[0006] In order to achieve the purpose, the utility model adopts the following technical scheme:

[0007] The overcurrent temperature rise test frock has the electric conduction function, and the overcurrent temperature rise test frock comprises:

[0008] The mounting plate is installed on the mounting plate along the length direction of the connecting piece, and the two sets of clamping assemblies are arranged between the mounting plate and the mounting plate along the length direction of the connecting piece.

[0009] Two sets of clamping assemblies, two sets of the clamping assemblies are installed on the mounting plate along the length direction of the connecting piece, and the two sets of clamping assemblies form a containing space for containing the connecting piece between the two sets of clamping assemblies, and the relative position of the two sets of clamping assemblies along the length direction of the connecting piece is adjustable.

[0010] Each of the clamping assemblies comprises a supporting piece and a pressing piece, the pressing piece, the supporting piece and the mounting plate are sequentially stacked, and the supporting piece and the pressing piece jointly clamp and fix one end of the connecting piece in the length direction.

[0011] As an option, each of the clamping assemblies further comprises:

[0012] A first fixing piece, the pressing piece is provided with a first fixing hole, and one end of the first fixing piece passes through the first fixing hole and is detachably fixed with the supporting piece.

[0013] As an option, the first fixing hole is a waist-shaped hole, and the length direction of the first fixing hole is in the same direction as the length direction of the connecting piece.

[0014] As an option, the pressing piece has a clamping part and a fixing part, the clamping part is connected with the fixing part at both ends in the width direction of the connecting piece, the clamping part is used for clamping and fixing the connecting piece, and the fixing part is provided with the first fixing hole.

[0015] As an option, the first fixing hole has a first passing part and a second passing part connected in sequence, the first passing part is located at one end of the second passing part away from the supporting piece in the axial direction, the first fixing piece is a bolt, the hole diameter of the first passing part is matched with the nut of the bolt, and the hole diameter of the second passing part is matched with the screw rod of the bolt.

[0016] The screw rod of the bolt is sequentially threaded through the first passing part and the second passing part and is threadedly fixed with the supporting piece, and the nut of the bolt is accommodated in the first passing part.

[0017] As an option, each of the clamping assemblies further comprises:

[0018] A second fixing piece, the mounting plate is provided with a plurality of mounting holes spaced apart in the length direction of the connecting piece, the supporting piece is provided with a second fixing hole, and one end of the second fixing piece passes through the second fixing hole and is detachably fixed with the mounting hole.

[0019] As an option, the second fixing hole is a waist-shaped hole, and the length direction of the second fixing hole is in the same direction as the length direction of the connecting piece.

[0020] As an option, the supporting piece has a supporting part and an extension part, the supporting part is connected with the extension part at both ends in the width direction of the connecting piece, the pressing piece is only opposite to the supporting part, and the extension part is provided with the second fixing hole.

[0021] As an option, a plurality of weight reduction holes are spaced apart on the mounting plate.

[0022] The overcurrent temperature rise testing device comprises an input assembly, a butt joint assembly, a temperature measuring assembly and the overcurrent temperature rise testing tool for clamping and fixing the connecting sheet, the input assembly is used for inputting test current to the middle region of the connecting sheet, the butt joint assembly is used for receiving the test current flowing out from the two ends of the connecting sheet in the length direction, and the temperature measuring assembly is used for measuring the temperature of the connecting sheet.

[0023] The overcurrent temperature rise testing device comprises an input assembly, a butt joint assembly, a temperature measuring assembly and the overcurrent temperature rise testing tool for clamping and fixing the connecting sheet, the input assembly is used for inputting test current to the middle region of the connecting sheet, the butt joint assembly is used for receiving the test current flowing out from the two ends of the connecting sheet in the length direction, and the temperature measuring assembly is used for measuring the temperature of the connecting sheet.

[0024] The overcurrent temperature rise testing tool has the advantages that two sets of clamping assemblies are arranged on the mounting plate along the length direction of the connecting sheet, a containing space for containing the connecting sheet is formed between the two sets of clamping assemblies, each set of clamping assembly comprises a pressing piece and a supporting piece, one end of the connecting sheet in the length direction is clamped and fixed by the pressing piece and the supporting piece, the two ends of the connecting sheet in the length direction in the containing space are clamped and fixed by the two sets of clamping assemblies, the middle region of the connecting sheet is arranged above the mounting plate and has a gap between the mounting plate when the two ends of the connecting sheet in the length direction are clamped and fixed by the two sets of clamping assemblies, the overcurrent temperature rise testing tool has conductivity, the test current can be input to the middle region of the connecting sheet and flow out from the two ends of the connecting sheet in the length direction during subsequent overcurrent temperature rise testing of the connecting sheet, actual testing requirements are met, the relative positions of the two sets of clamping assemblies along the length direction of the connecting sheet can be adjusted, the connecting sheet with different lengths can be clamped and fixed, overcurrent temperature rise testing of the connecting sheet with different lengths is realized, and the applicability is high.

[0025] The overcurrent temperature rise testing device comprises an input assembly, a butt joint assembly, a temperature measuring assembly and the overcurrent temperature rise testing tool for clamping and fixing the connecting sheet, the input assembly is used for inputting test current to the middle region of the connecting sheet, the butt joint assembly is used for receiving the test current flowing out from the two ends of the connecting sheet in the length direction, and the temperature measuring assembly is used for measuring the temperature of the connecting sheet. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of a connecting sheet provided by the utility model embodiment;

[0027] Figure 2 is a first structural schematic view of an overcurrent temperature rise testing tool provided by the utility model embodiment;

[0028] Figure 3 is a second structural schematic view of the overcurrent temperature rise testing tool provided by the utility model embodiment;

[0029] Figure 4It is the first profile schematic view of the overcurrent temperature rise test tool provided by the embodiment of the utility model;

[0030] Figure 5 It is the second profile schematic view of the overcurrent temperature rise test tool provided by the embodiment of the utility model;

[0031] Figure 6 It is the third structure schematic view of the overcurrent temperature rise test tool provided by the embodiment of the utility model.

[0032] In the drawing,

[0033] 100, clamping assembly, 110, compression piece, 111, first fixed hole, 120, supporting piece, 121, second fixed hole, 130, first fixed piece, 140, second fixed piece,

[0034] 200, mounting plate, 210, mounting hole, 220, lightening hole,

[0035] 2000, connecting sheet. DETAILED DESCRIPTION

[0036] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained by specific implementation manners in combination with the drawings below.

[0037] In the description of the utility model, unless another explicit provision and limitation, the terms "link", "connection", "fixation" should be broad sense understanding, for example, can be fixed connection, or can be detachable connection, or be integrated;Can be mechanical connection, or electrical connection;Can be directly connected, or indirectly connected through the intermediate medium, can be the communication inside two elements or the interaction relationship of two elements.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them is not direct contact.And, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than the second feature.The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than the second feature.

[0039] In the description of the embodiments, the terms "upper", "lower", "left", "right", and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0040] The connecting piece of the battery is used to connect the positive and negative poles of the battery, and the conventional battery connecting piece is connected with the positive and negative poles at the two ends in the length direction respectively to realize the transmission of current. In the actual operation process, the connecting piece is easy to heat. In order to improve the safety of the use of the connecting piece, it is necessary to test the overcurrent temperature rise of the connecting piece. The existing overcurrent temperature rise testing device includes an upper clamp and a lower clamp arranged opposite in the up-down direction, the upper clamp and the lower clamp clamp and fix the two ends of the connecting piece in the length direction respectively, and any one of the upper clamp and the lower clamp is a current generating end, and the other is a current recovery end, to simulate the flow direction of current in the connecting piece in the actual operation. As shown in Figure 1 A connecting piece 2000 is developed, the center area of the connecting piece 2000 is connected with the battery roll core, and the two ends of the connecting piece 2000 in the length direction are connected with the battery shell respectively. In the actual working process of the battery, the current flows into the connecting piece 2000 from the center area of the connecting piece 2000 and flows out from the two ends of the connecting piece 2000 in the length direction. The current flow direction in the connecting piece 2000 is different from that in the existing connecting piece, and the existing overcurrent temperature rise testing device cannot test the overcurrent temperature rise of the connecting piece 2000.

[0041] Therefore, the embodiment provides an overcurrent temperature rise testing device to realize the overcurrent temperature rise testing of the connecting piece 2000 with the current flowing from the center area to the two ends in the length direction. Specifically, the overcurrent temperature rise testing device includes an input assembly, a docking assembly, a temperature measuring assembly and an overcurrent temperature rise testing tool, the overcurrent temperature rise testing tool is used to clamp and fix the connecting piece 2000, the input assembly is used to input test current to the middle area of the connecting piece 2000, the docking assembly is used to receive the test current flowing out from the two ends of the connecting piece 2000 in the length direction, and the temperature measuring assembly is used to measure the temperature of the connecting piece 2000. By using the overcurrent temperature rise testing tool to clamp the connecting piece 2000, the circuit connection between the input assembly and the docking assembly and the connecting piece 2000 can be facilitated, and the temperature of the connecting piece 2000 is measured by the temperature measuring assembly, so that the overcurrent temperature rise testing of the connecting piece 2000 is realized.

[0042] In combination Figures 2-6Specific structure of the overcurrent temperature rise test tool is described. The overcurrent temperature rise test tool has a conductive function, and includes a mounting plate 200 and two sets of clamping assembly 100. The two sets of clamping assembly 100 are installed on the mounting plate 200 along the length direction of the connecting piece 2000, and form a containing space for containing the connecting piece 2000 between the two sets of clamping assembly 100. The relative positions of the two sets of clamping assembly 100 along the length direction of the connecting piece 2000 are adjustable. Each set of clamping assembly 100 includes a supporting piece 120 and a pressing piece 110. The pressing piece 110, the supporting piece 120 and the mounting plate 200 are stacked in sequence, and the supporting piece 120 and the pressing piece 110 jointly clamp and fix one end of the connecting piece 2000 along the length direction.

[0043] The overcurrent temperature rise test tool can form a containing space for containing the connecting piece 2000 between the two sets of clamping assembly 100 by installing the two sets of clamping assembly 100 on the mounting plate 200 along the length direction of the connecting piece 2000. Each set of clamping assembly 100 includes a pressing piece 110 and a supporting piece 120, and the pressing piece 110 and the supporting piece 120 jointly clamp and fix one end of the connecting piece 2000 along the length direction, so as to clamp and fix the two ends of the connecting piece 2000 along the length direction in the containing space by the two sets of clamping assembly 100. In combination with the stacked arrangement of the pressing piece 110, the supporting piece 120 and the mounting plate 200, when the two sets of clamping assembly 100 jointly clamp and fix the two ends of the connecting piece 2000 along the length direction, the middle region of the connecting piece 2000 can be suspended above the mounting plate 200 and there is a gap between the middle region of the connecting piece 2000 and the mounting plate 200. In combination with the conductive property of the overcurrent temperature rise test tool, the test current input by the input assembly can be easily input to the middle region of the connecting piece 2000 and flow out from the two ends of the connecting piece 2000 along the length direction and flow into the docking assembly during the subsequent overcurrent temperature rise test of the connecting piece 2000, so as to meet the actual test requirements. In addition, by ensuring that the relative positions of the two sets of clamping assembly 100 along the length direction of the connecting piece 2000 are adjustable, the clamping and fixing of the connecting piece 2000 with different lengths can be realized, and the overcurrent temperature rise test of the connecting piece 2000 with different lengths can be realized, so the adaptability is high.

[0044] As an optional solution, as Figures 2-4As shown, each assembly clamping assembly 100 further comprises a first fixing member 130, wherein the pressing member 110 is provided with a first fixing hole 111, and one end of the first fixing member 130 is detachably fixed with the supporting member 120 after penetrating through the first fixing hole 111. By providing the first fixing hole 111 on the pressing member 110, and detachably fixing one end of the first fixing member 130 with the supporting member 120 after penetrating through the first fixing hole 111, the pressing member 110 and the supporting member 120 can be quickly disassembled and assembled, the clamping efficiency of the connecting plate 2000 is improved, and the subsequent flow temperature rise test efficiency of the connecting plate 2000 is improved.

[0045] In the embodiment, the first fixing hole 111 is a waist-shaped hole, and the length direction of the first fixing hole 111 is the same as the length direction of the connecting plate 2000. By setting the first fixing hole 111 as a waist-shaped hole, the length direction of the first fixing hole 111 is the same as the length direction of the connecting plate 2000. When it is necessary to clamp and fix connecting plates 2000 of different lengths, the relative positions of the pressing member 110 and the supporting member 120 can be adjusted along the length direction of the first fixing hole 111, without adjusting the relative positions of the two assembly clamping assemblies 100, thereby further simplifying the clamping steps. Understandably, when it is necessary to clamp and fix connecting plates 2000 of different lengths, the relative positions of the supporting member 120 and the pressing member 110 in each assembly clamping assembly 100 can be adjusted while adjusting the relative positions of the two assembly clamping assemblies 100, so that the pressing member 110 and the supporting member 120 can clamp and fix the end portions of connecting plates 2000 of different lengths.

[0046] In order to ensure the clamping effect of the pressing member 110 and the supporting member 120 on the connecting plate 2000, the pressing member 110 has a clamping portion and a fixing portion, the clamping portion is connected with the fixing portion at both ends along the width direction of the connecting plate 2000, the clamping portion is used for clamping and fixing the connecting plate 2000, and the fixing portion is provided with the first fixing hole 111. By splitting the pressing member 110 into the clamping portion and the fixing portion, the fixing portion is arranged at both ends of the clamping portion along the width direction of the connecting plate 2000, the first fixing hole 111 is arranged in the fixing portion, and the clamping portion clamps and fixes the connecting plate 2000, so that the first fixing member 130 does not interfere with the connecting plate 2000 during clamping and fixing of the connecting plate 2000. In addition, by splitting the pressing member 110 into the clamping portion and the fixing portion, the clamping portion clamps the connecting plate 2000, which can improve the clamping effect of the connecting plate 2000, so that the clamping portion and the supporting member 120 can clamp and fix the connecting plate 2000 flatly, and deformation of the connecting plate 2000 and abnormal heating caused by clamping and fixing of the connecting plate 2000 are avoided.

[0047] In some embodiments, the first fixing hole 111 has a first threaded portion and a second threaded portion connected in sequence, the first threaded portion is located at one end of the second threaded portion away from the support 120 in the axial direction, the first fixing member 130 is a bolt, the hole diameter of the first threaded portion is matched with the nut of the bolt, the hole diameter of the second threaded portion is matched with the screw rod of the bolt, the screw rod of the bolt is threaded through the first threaded portion and the second threaded portion in sequence and is screwed with the support 120, and the nut of the bolt is accommodated in the first threaded portion. By splitting the first fixing hole 111 into the first threaded portion and the second threaded portion connected in sequence, locating the first threaded portion at one end of the second threaded portion away from the support 120 in the axial direction, setting the first fixing member 130 as a bolt, matching the hole diameter of the first threaded portion with the nut of the bolt, matching the hole diameter of the second threaded portion with the screw rod of the bolt, threading the screw rod of the bolt through the first threaded portion and the second threaded portion in sequence when the compression member 110 needs to be screwed with the support 120, screwing the screw rod of the bolt with the support 120, and accommodating the nut of the bolt in the first threaded portion, the effect of hiding the nut inside the compression member 110 is achieved.

[0048] In an optional embodiment, as shown in Figure 2 、 Figure 5 and Figure 6 , each assembly clamp assembly 100 further comprises a second fixing member 140, wherein the mounting plate 200 is provided with a plurality of mounting holes 210 spaced apart along the length direction of the connecting piece 2000, the support 120 is provided with a second fixing hole 121, and one end of the second fixing member 140 is threaded through the second fixing hole 121 and detachably fixed with the mounting hole 210. By providing a plurality of mounting holes 210 spaced apart along the length direction of the connecting piece 2000 on the mounting plate 200, providing a second fixing hole 121 on the support 120, and threading one end of the second fixing member 140 through the second fixing hole 121 and detachably fixing it with the mounting hole 210, not only the support 120 and the mounting plate 200 can be fixed together, but also the relative position of the support 120 and the mounting plate 200 can be adjusted according to actual needs, so that the second fixing member 140 can be detachably fixed with different mounting holes 210, and the relative position of the two assembly clamp assemblies 100 along the length direction of the connecting piece 2000 can be adjusted. It should be noted that in this embodiment, the mounting plate 200 is provided with two rows of mounting holes 210 spaced apart along the length direction of the connecting piece 2000, each row of mounting holes 210 comprises six mounting holes 210, and each support 120 is detachably fixed with two mounting holes 210 in the two rows of mounting holes 210 arranged side by side along the length direction of the connecting piece 2000.

[0049] To further improve the position adjustment accuracy of the two assembly clamp assemblies 100 along the length direction of the connecting piece 2000, the second fixing hole 121 is a waist-shaped hole, and the length direction of the second fixing hole 121 is the same as the length direction of the connecting piece 2000. By setting the second fixing hole 121 as a waist-shaped hole and making the length direction of the second fixing hole 121 the same as the length direction of the connecting piece 2000, when the position between the two assembly clamp assemblies 100 along the length direction of the connecting piece 2000 needs to be adjusted, the relative position between the second fixing part 140 and the second fixing hole 121 can be adjusted along the length direction of the second fixing hole 121, thereby improving the position adjustment accuracy of the two assembly clamp assemblies 100 along the length direction of the connecting piece 2000. It can be understood that in actual operation, when the position between the two assembly clamp assemblies 100 along the length direction of the connecting piece 2000 needs to be adjusted, only the relative position between the second fixing part 140 and the mounting hole 210 can be changed, only the relative position between the second fixing part 140 and the second fixing hole 121 can be changed, or the relative position between the second fixing part 140 and the mounting hole 210 and the relative position between the second fixing part 140 and the second fixing hole 121 can be changed at the same time.

[0050] As an optional solution, the end surface of the mounting plate 200 close to the support part 120 is provided with a scale line extending along the length direction of the connecting piece 2000, and the scale line does not interfere with the support part 120. By setting the scale line extending along the length direction of the connecting piece 2000 on the end surface of the mounting plate 200 close to the support part 120, and making the scale line not interfere with the support part 120, the specific position of the support part 120 relative to the mounting plate 200 can be observed through the scale line, and the specific distance between the two support parts 120 can be determined in combination with the scale of the scale line, thereby further improving the clamping effect of the connecting piece 2000.

[0051] In the embodiment, the support part 120 has a support part and an extension part, the support part is connected with the extension part at both ends along the width direction of the connecting piece 2000, the pressing part 110 is only opposite to the support part, and the extension part is provided with the second fixing hole 121. By splitting the support part 120 into the support part and the extension part, connecting the extension part to the support part at both ends along the width direction of the connecting piece 2000, making the pressing part 110 only opposite to the support part, and setting the second fixing hole 121 on the extension part, the second fixing hole 121 on the support part 120 and the first fixing hole 111 on the pressing part 110 can be staggered, which not only can avoid the interference between the first fixing part 130 for passing through the first fixing hole 111 and the second fixing part 140 for passing through the second fixing hole 121, but also can improve the disassembly and assembly efficiency between the pressing part 110, the support part 120 and the mounting plate 200.

[0052] It should be noted that the second fixing member 140 is a bolt, the mounting hole 210 is a threaded hole, the second fixing hole 121 has a third penetrating portion and a fourth penetrating portion connected in sequence, the third penetrating portion is located at one end of the fourth penetrating portion away from the mounting plate 200, the hole diameter of the third penetrating portion is matched with the nut of the bolt, and the hole diameter of the fourth penetrating portion is matched with the screw rod of the bolt. When the support member 120 and the mounting plate 200 need to be assembled together, the screw rod of the bolt is sequentially threaded through the third penetrating portion and the fourth penetrating portion and is threadedly fixed with the mounting hole 210, and the nut of the bolt is located in the third penetrating portion to embed the nut of the bolt in the second fixing hole 121.

[0053] As an alternative, as shown in Figure 6 The mounting plate 200 is provided with a plurality of weight reduction holes 220 at intervals, and the weight reduction holes 220 do not interfere with the mounting holes 210. By arranging a plurality of weight reduction holes 220 at intervals on the mounting plate 200, the weight of the mounting plate 200 can be reduced, the production cost of the mounting plate 200 can be reduced, and the heat dissipation effect of the mounting plate 200 can be improved. Specifically, when the over-current temperature rise test tool clamps and fixes the connecting piece 2000 for over-current temperature rise test, the heat generated by the connecting piece 2000 will be transferred to the over-current temperature rise test tool. If the heat dissipation effect of the over-current temperature rise test tool is poor, after completing the over-current temperature rise test of one connecting piece 2000, when the over-current temperature rise test tool clamps another connecting piece 2000, the over-current temperature rise test tool will reversely heat the connecting piece 2000, which will affect the over-current temperature rise test effect of the connecting piece 2000. Therefore, after completing the over-current temperature rise test of one connecting piece 2000, the over-current temperature rise test of the next connecting piece 2000 needs to be carried out after the over-current temperature rise test tool is cooled. By arranging the weight reduction holes 220 on the mounting plate 200, the heat dissipation effect of the mounting plate 200 is improved, the over-current temperature rise test tool can be quickly cooled, and the over-current temperature rise test efficiency is improved.

[0054] It should be noted that in the embodiment, four weight reduction holes 220 are arranged on the mounting plate 200. In other embodiments, the number of weight reduction holes 220 can be adjusted according to actual needs, and the embodiment is not limited in particular.

[0055] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not enumerated. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An overcurrent temperature rise test fixture characterized by, The overcurrent temperature rise test tool has a conductive function, and the overcurrent temperature rise test tool comprises: A mounting plate (200); Two sets of clamping assemblies (100) are mounted on the mounting plate (200) along the length direction of the connecting sheet (2000) and are spaced apart from each other, and a containing space for containing the connecting sheet (2000) is formed between the two sets of clamping assemblies (100), and the relative positions of the two sets of clamping assemblies (100) along the length direction of the connecting sheet (2000) are adjustable. Each set of clamping assemblies (100) comprises a supporting piece (120) and a pressing piece (110), and the pressing piece (110), the supporting piece (120) and the mounting plate (200) are sequentially stacked, and the supporting piece (120) and the pressing piece (110) jointly clamp and fix one end of the connecting sheet (2000) along the length direction.

2. The flow-through thermal test fixture of claim 1, wherein, Each set of clamping assemblies (100) further comprises: A first fixing piece (130), the pressing piece (110) is provided with a first fixing hole (111), and one end of the first fixing piece (130) passes through the first fixing hole (111) and is detachably fixed with the supporting piece (120).

3. The flow-through thermal test fixture of claim 2, wherein, The first fixing hole (111) is a waist-shaped hole, and the length direction of the first fixing hole (111) is the same as the length direction of the connecting sheet (2000).

4. The flow-through thermal test fixture of claim 2, wherein, The pressing piece (110) has a clamping part and a fixing part, the clamping part is connected with the fixing part at both ends along the width direction of the connecting sheet (2000), the clamping part is used for clamping and fixing the connecting sheet (2000), and the fixing part is provided with the first fixing hole (111).

5. The flow-through thermal test fixture of claim 2, wherein, The first fixing hole (111) has a first passing part and a second passing part connected in sequence, the first passing part is located at one end of the second passing part away from the supporting piece (120) in the axial direction, the first fixing piece (130) is a bolt, the hole diameter of the first passing part is matched with the nut of the bolt, and the hole diameter of the second passing part is matched with the screw rod of the bolt; The screw rod of the bolt is sequentially threaded through the first passing part and the second passing part and is threadedly fixed with the supporting piece (120), and the nut of the bolt is contained in the first passing part.

6. The flow-through thermal test fixture of any one of claims 1 to 5, wherein, Each set of clamping assemblies (100) further comprises: A second fixing piece (140), a plurality of mounting holes (210) are arranged on the mounting plate (200) along the length direction of the connecting sheet (2000), the supporting piece (120) is provided with a second fixing hole (121), and one end of the second fixing piece (140) passes through the second fixing hole (121) and is detachably fixed with the mounting hole (210).

7. The flow-through temperature rise test fixture of claim 6, wherein, The second fixing hole (121) is a waist-shaped hole, and the length direction of the second fixing hole (121) is the same as the length direction of the connecting sheet (2000).

8. The flow-through temperature rise test fixture of claim 6, wherein, The supporting piece (120) has a supporting part and an extension part, the extension part is connected to both ends of the supporting part along the width direction of the connecting piece (2000), the pressing piece (110) is only opposite to the supporting part, and the extension part is provided with the second fixing hole (121).

9. The flow-through thermal test fixture of any one of claims 1-5, wherein, A plurality of lightening holes (220) are arranged on the mounting plate (200) at intervals.

10. An overcurrent temperature rise test device characterized by, The overcurrent temperature rise test tool is used for clamping and fixing the connecting piece (2000), the input assembly is used for inputting a test current to the middle region of the connecting piece (2000), the docking assembly is used for receiving the test current flowing out from both ends of the connecting piece (2000) along the length direction, and the temperature measuring assembly is used for measuring the temperature of the connecting piece (2000).

Images