Overcharge thermal runaway testing device

Abstract

The utility model discloses an overcharge thermal runaway testing device, comprising: an overcharge assembly, the overcharge assembly comprising a positive electrode overcharge unit and a negative electrode overcharge unit, the positive electrode overcharge unit being connected with the positive electrode of a test sample, and the negative electrode overcharge unit being connected with the negative electrode of the test sample; a test sample is clamped on the mounting assembly, and the positive electrode overcharge unit and the negative electrode overcharge unit are both movably connected with the mounting assembly. The positive electrode overcharge unit and the negative electrode overcharge unit are used for collecting current and voltage of a test sample, test data are accurate, the structure is stable, and operation is easy; and the positive electrode overcharge unit and the negative electrode overcharge unit are both movably connected with the mounting assembly, so that the device can be suitable for testing test samples of different sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially, relates to a kind of overcharge thermal runaway testing device. BACKGROUND

[0002] In consumer electronics, automotive electronics, new energy battery and other industries, new national standard thermal runaway test changes from heating thermal runaway to overcharge thermal runaway, and the current thermal runaway test device sets voltage line to take pressure, and sets heating film wire harness to heat, and it is not applicable to the test of new national standard overcharge thermal runaway. Overcharge is carried out to single body, and the pressure line cannot bear large current, and sample data after reaction is easily lost;The current thermal runaway test method needs to be prepared in advance, and there are many problems in sample preparation, for example, insulation failure of temperature sensing line leads to short circuit, pressure line failure leads to rework and heating film damage in heating, which leads to test failure and other problems. INVENTION CONTENTS

[0003] In order to overcome at least one of the defects of the prior art described above, the utility model provides an overcharge thermal runaway testing device, which uses a positive electrode overcharge unit and a negative electrode overcharge unit to collect current and voltage of the test sample, the test data is accurate, the structure is stable and easy to operate;And the positive electrode overcharge unit and the negative electrode overcharge unit are movably connected with the mounting assembly, which can be used to test test samples of different sizes.

[0004] The utility model employs the technical scheme that solves the problem:

[0005] An overcharge thermal runaway testing device comprises:

[0006] The overcharge assembly comprises a positive electrode overcharge unit and a negative electrode overcharge unit, the positive electrode overcharge unit is connected with the positive electrode of the test sample, and the negative electrode overcharge unit is connected with the negative electrode of the test sample;

[0007] The mounting assembly is used to clamp the test sample, and the positive electrode overcharge unit and the negative electrode overcharge unit are movably connected with the mounting assembly.

[0008] In a preferred embodiment, the positive electrode overcharge unit comprises a positive electrode insulating element and a positive electrode conductive element, the positive electrode insulating element is sleeved outside the positive electrode conductive element, and the positive electrode conductive element is connected with the positive electrode of the test sample;

[0009] The negative electrode overcharge unit comprises a negative electrode insulating element and a negative electrode conductive element, the negative electrode insulating element is sleeved outside the negative electrode conductive element, and the negative electrode conductive element is connected with the negative electrode of the test sample.

[0010] In a preferred embodiment, the positive electrode overcharge unit further comprises a positive electrode supporting element, and the positive electrode supporting element is arranged between the positive electrode insulating element and the positive electrode conductive element;

[0011] The positive overcharge unit further comprises a positive support element, and the negative support element is arranged between the negative insulating element and the negative conductive element.

[0012] In a preferred embodiment, the positive insulating element and the positive support element are both sleeve elements, and the positive conductive element is a sleeve element or a rod element;

[0013] The negative insulating element and the negative support element are both sleeve elements, and the negative conductive element is a sleeve element or a rod element.

[0014] In a preferred embodiment, the mounting assembly comprises a first mounting plate, and the first mounting plate is provided with a first adjusting hole, and the positive overcharge unit is provided with a first connecting structure for being movably connected with the first adjusting hole;

[0015] The first mounting plate is provided with a second adjusting hole, and the positive overcharge unit is provided with a second connecting structure for being movably connected with the second adjusting hole.

[0016] In a preferred embodiment, the first connecting structure comprises a first nut, the positive overcharge unit is externally provided with threads for cooperating with the first nut, the positive overcharge unit is arranged on the first adjusting hole, and the positive overcharge unit is locked on the first mounting plate by at least two first nuts;

[0017] The second connecting structure comprises a second nut, the negative overcharge unit is externally provided with threads for cooperating with the second nut, the negative overcharge unit is arranged on the second adjusting hole, and the negative overcharge unit is locked on the first mounting plate by at least two second nuts.

[0018] In a preferred embodiment, the positive overcharge unit is provided with a positive wire harness connecting position, and the mounting assembly is provided with a positive wire harness fixing position;

[0019] The negative overcharge unit is provided with a negative wire harness connecting position, and the mounting assembly is provided with a negative wire harness fixing position.

[0020] In a preferred embodiment, the overcharge thermal runaway test device further comprises a positive wire harness fixing structure and a negative wire harness fixing structure;

[0021] The positive wire harness fixing structure comprises a first locking screw rod for fixing the positive wire harness;

[0022] The negative wire harness fixing structure comprises a second locking screw rod for fixing the negative wire harness.

[0023] In a preferred embodiment, one end of the positive wire harness is connected with the positive overcharge unit through the positive wire harness connecting position, and the other end of the positive wire harness is connected with the charging and discharging cabinet through the positive wire harness fixing position;

[0024] One end of the negative wire harness is connected with the negative overcharge unit through a negative wire harness connecting position, and the other end of the negative wire harness is connected with the charging and discharging cabinet through a negative wire harness fixing position.

[0025] In a preferred embodiment, the mounting assembly further comprises a second mounting plate, a clamping space for clamping the test sample is formed between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate are connected through a third connecting structure.

[0026] In summary, the utility model has the following technical effects: the utility model adopts the positive overcharge unit and the negative overcharge unit to collect the current and voltage of the test sample, the test data is accurate, the structure is stable and easy to operate, and the positive overcharge unit and the negative overcharge unit are movably connected with the mounting assembly, so that the test sample of different sizes can be tested. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 It is a use state schematic view of the utility model embodiment;

[0028] Fig. 2 It is a structure schematic view of the utility model embodiment.

[0029] Among them, the meaning of the reference signs is as follows:

[0030] 10, the positive overcharge unit, 101, the positive insulating element, 102, the positive conductive element, 103, the positive support element, 20, the negative overcharge unit, 201, the negative insulating element, 202, the negative conductive element, 203, the negative support element, 30, the test sample, 40, the mounting assembly, 401, the first mounting plate, 402, the first adjusting hole, 403, the second adjusting hole, 404, the second mounting plate, 50, the first connecting structure, 60, the second connecting structure, 70, the positive wire harness connecting position, 80, the positive wire harness fixing position, 90, the negative wire harness connecting position, 100, the negative wire harness fixing position, 110, the positive wire harness fixing structure, 120, the negative wire harness fixing structure, 130, the positive wire harness, 140, the negative wire harness, 150, the charging and discharging cabinet. DETAILED DESCRIPTION

[0031] In order to better understand and implement, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0032] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, 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 limiting the utility model.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0034] Referring to Figs. 1-2 The utility model discloses a kind of overcharge test devices, comprising: overcharge component, overcharge component includes positive electrode overcharge unit 10 and negative electrode overcharge unit 20, positive electrode overcharge unit 10 is connected with the positive electrode of test sample 30, and negative electrode overcharge unit 20 is connected with the negative electrode of test sample 30;Mounting assembly 40, test sample 30 is clamped on mounting assembly 40, and positive electrode overcharge unit 10 and negative electrode overcharge unit 20 are both movably connected with mounting assembly 40.

[0035] The utility model adopts positive electrode overcharge unit 10 and negative electrode overcharge unit 20 to carry out current voltage collection of test sample 30, test data is accurate, and structure is stable, easy to operate;And positive electrode overcharge unit 10 and negative electrode overcharge unit 20 are both movably connected with mounting assembly 40, and can be suitable for testing test sample 30 of different sizes.

[0036] The above-mentioned test sample 30 can be a battery module, a battery pack or a single battery, etc., and the specific type of the test sample 30 can be determined according to the actual application scenario and is not limited.

[0037] In the embodiment of the utility model, positive electrode overcharge unit 10 includes positive electrode insulating element 101 and positive electrode conductive element 102, positive electrode insulating element 101 is sleeved outside positive electrode conductive element 102, and positive electrode conductive element 102 is connected with the positive electrode of test sample 30;Negative electrode overcharge unit 20 includes negative electrode insulating element 201 and negative electrode conductive element 202, negative electrode insulating element 201 is sleeved outside negative electrode conductive element 202, and negative electrode conductive element 202 is connected with the negative electrode of test sample 30.

[0038] In the embodiment of the utility model, the positive electrode overcharge unit 10 further includes a positive electrode supporting element 103, the positive electrode supporting element 103 is arranged between the positive electrode insulating element 101 and the positive electrode conducting element 102, the negative electrode overcharge unit 20 further includes a positive electrode supporting element 103, the negative electrode supporting element 203 is arranged between the negative electrode insulating element 201 and the negative electrode conducting element 202.

[0039] In the embodiment of the utility model, the positive electrode insulating element 101 and the positive electrode supporting element 103 are both sleeve members, the positive electrode conducting element 102 is a sleeve member or a rod member, the negative electrode insulating element 201 and the negative electrode supporting element 203 are both sleeve members, and the negative electrode conducting element 202 is a sleeve member or a rod member.

[0040] Preferably, the positive electrode conducting element 102 is a metal sleeve member or a metal rod member, for example, a copper sleeve or a copper rod, and the specific structure of the positive electrode conducting element 102 is subject to the requirement of facilitating conduction and is not limited.

[0041] Preferably, the negative electrode conducting element 202 is a metal sleeve member or a metal rod member, for example, a copper sleeve or a copper rod, and the specific structure of the negative electrode conducting element 202 is subject to the requirement of facilitating conduction and is not limited.

[0042] Preferably, the positive electrode insulating element 101 and the negative electrode insulating element 201 are both silica gel sleeves, rubber sleeves, plastic sleeves, etc., subject to the requirement of facilitating insulation and are not limited.

[0043] Preferably, the positive electrode supporting element 103 is a metal sleeve member, for example, a copper sleeve, and the specific structure of the positive electrode supporting element 103 is subject to the requirement of improving the connection stability of the positive electrode conducting element 102 and facilitating the connection of the positive electrode overcharge unit 10 and the positive electrode wire harness 130 and is not limited.

[0044] Preferably, the negative electrode supporting element 203 is a metal sleeve member, for example, a copper sleeve, and the specific structure of the negative electrode supporting element 203 is subject to the requirement of improving the connection stability of the negative electrode conducting element 202 and facilitating the connection of the negative electrode overcharge unit 20 and the negative electrode wire harness 140 and is not limited.

[0045] In the embodiment of the utility model, the mounting assembly 40 includes a first mounting plate 401, the first mounting plate 401 is provided with a first adjusting hole 402, and the positive electrode overcharge unit 10 is provided with a first connecting structure 50 used for movably connecting with the first adjusting hole 402; the first mounting plate 401 is provided with a second adjusting hole 403, and the positive electrode overcharge unit 10 is provided with a second connecting structure 60 used for movably connecting with the second adjusting hole 403.

[0046] Specifically, the first adjusting hole 402 and the second adjusting hole 403 are both strip-shaped holes, the positive electrode overcharge unit 10 can be adjusted in position along the radial direction and the axial direction of the first adjusting hole 402, and after the positive electrode overcharge unit 10 is adjusted in position, the positive electrode overcharge unit 10 is connected to the first mounting plate 401 through the first connecting structure 50; similarly, the negative electrode overcharge unit 20 can be adjusted in position along the radial direction and the axial direction of the second adjusting hole 403, and after the negative electrode overcharge unit 20 is adjusted in position, the negative electrode overcharge unit 20 is connected to the first mounting plate 401 through the second connecting structure 60.

[0047] In the embodiment of the utility model, the first connecting structure 50 includes first nut, the outside of positive electrode overcharge unit 10 is provided with the thread for cooperating with first nut, positive electrode overcharge unit 10 is arranged on first adjusting hole 402, and positive electrode overcharge unit 10 is locked on first mounting plate 401 through at least two first nuts;Second connecting structure 60 includes second nut, the outside of negative electrode overcharge unit 20 is provided with the thread for cooperating with second nut, negative electrode overcharge unit 20 is arranged on second adjusting hole 403, and negative electrode overcharge unit 20 is locked on first mounting plate 401 through at least two second nuts.

[0048] Preferably, the positive electrode overcharge unit 10 is arranged on the first adjusting hole 402, and the positive electrode overcharge unit 10 is locked on the first mounting plate 401 by two first nuts, wherein the two first nuts are sleeved on the outside of the positive electrode overcharge unit 10, and the two first nuts are respectively abutted on the upper and lower surfaces of the first mounting plate 401, so that the positive electrode overcharge unit 10 is stably installed.

[0049] Preferably, the negative electrode overcharge unit 20 is arranged on the second adjusting hole 403, and the negative electrode overcharge unit 20 is locked on the first mounting plate 401 by two second nuts, wherein the two second nuts are sleeved on the outside of the negative electrode overcharge unit 20, and the two second nuts are respectively abutted on the upper and lower surfaces of the first mounting plate 401, so that the negative electrode overcharge unit 20 is stably installed.

[0050] In the embodiment of the utility model, the positive electrode overcharge unit 10 is provided with a positive electrode wire harness connection position 70, and the mounting assembly 40 is provided with a positive electrode wire harness fixing position 80; the negative electrode overcharge unit 20 is provided with a negative electrode wire harness connection position 90, and the mounting assembly 40 is provided with a negative electrode wire harness fixing position 100.

[0051] In the embodiment of the utility model, the overcharge thermal runaway test device further includes a positive electrode wire harness fixing structure 110 and a negative electrode wire harness fixing structure 120; the positive electrode wire harness fixing structure 110 includes a first locking screw, and the first locking screw is used for fixing a positive electrode wire harness 130; the negative electrode wire harness fixing structure 120 includes a second locking screw, and the second locking screw is used for fixing a negative electrode wire harness 140.

[0052] Specifically, the positive wire harness 130 is locked by the first locking screw, and the negative wire harness 140 is locked by the second locking screw.

[0053] In the embodiment of the utility model, one end of the positive wire harness 130 is connected with the positive overcharge unit 10 through the positive wire harness connecting position 70, and the other end of the positive wire harness 130 is connected with the charging and discharging cabinet 150 through the positive wire harness fixing position 80; one end of the negative wire harness 140 is connected with the negative overcharge unit 20 through the negative wire harness connecting position 90, and the other end of the negative wire harness 140 is connected with the charging and discharging cabinet 150 through the negative wire harness fixing position 100.

[0054] Since the positive wire harness fixing structure 110 is arranged, the bearing force of the connection position of the positive wire harness 130 and the positive overcharge unit 10 is reduced, and the stability of the connection of the positive wire harness 130 and the positive overcharge unit 10 is improved; similarly, since the negative wire harness fixing structure 120 is arranged, the bearing force of the connection position of the negative wire harness 140 and the negative overcharge unit 20 is reduced, and the stability of the connection of the negative wire harness 140 and the negative overcharge unit 20 is improved.

[0055] In the embodiment of the utility model, the mounting assembly 40 further comprises a second mounting plate 404, a clamping space for clamping the test sample 30 is formed between the first mounting plate 401 and the second mounting plate 404, and the first mounting plate 401 and the second mounting plate 404 are connected through a third connecting structure.

[0056] Specifically, the first mounting plate 401 is made of bakelite, and the second mounting plate 404 is made of metal, so that the accuracy of test data can be ensured, and the first mounting plate 401 and the second mounting plate 404 do not affect the test sample 30; moreover, the first mounting plate 401 and the second mounting plate 404 can be reused, the design precision requirement and the production cost are low, and the applicability is large.

[0057] Specifically, the third connecting structure comprises a third locking screw, a plurality of first mounting holes are arranged around the side of the first mounting plate 401, a plurality of second mounting holes are arranged around the side of the second mounting plate 404, the third locking screw, the first mounting hole and the second mounting hole are arranged one by one, and the third locking screw passes through the corresponding first mounting hole and second mounting hole to connect the first mounting plate 401 and the second mounting plate 404.

[0058] Further, in order to make the mounting assembly 40 better adapt to test samples 30 of different sizes, the first mounting hole and / or the second mounting hole are long holes.

[0059] The technical means disclosed by the utility model scheme are not limited to the technical means disclosed by the above-mentioned embodiments, and also include technical schemes composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. An overcharge runaway test apparatus, characterized by, The application relates to a battery overcharge test device, which comprises the following components: an overcharge assembly, which comprises a positive electrode overcharge unit and a negative electrode overcharge unit, the positive electrode overcharge unit is connected with the positive electrode of a test sample, and the negative electrode overcharge unit is connected with the negative electrode of the test sample; an installation assembly, the test sample is clamped on the installation assembly, and the positive electrode overcharge unit and the negative electrode overcharge unit are movably connected with the installation assembly.

2. The hyper-thermal runaway test device of claim 1, wherein: The positive electrode overcharge unit comprises a positive electrode insulating element and a positive electrode conductive element, the positive electrode insulating element is sleeved outside the positive electrode conductive element, and the positive electrode conductive element is connected with the positive electrode of the test sample; The negative electrode overcharge unit comprises a negative electrode insulating element and a negative electrode conductive element, the negative electrode insulating element is sleeved outside the negative electrode conductive element, and the negative electrode conductive element is connected with the negative electrode of the test sample.

3. The hyper-thermal runaway test device of claim 2, wherein: The positive electrode overcharge unit further comprises a positive electrode supporting element, which is arranged between the positive electrode insulating element and the positive electrode conductive element; The negative electrode overcharge unit further comprises a negative electrode supporting element, which is arranged between the negative electrode insulating element and the negative electrode conductive element.

4. The hyper-thermal runaway test device of claim 3, wherein: The positive electrode insulating element and the positive electrode supporting element are sleeve members, and the positive electrode conductive element is a sleeve member or a rod member; The negative electrode insulating element and the negative electrode supporting element are sleeve members, and the negative electrode conductive element is a sleeve member or a rod member.

5. The hyper-thermal runaway test device of any one of claims 1-4, wherein: The installation assembly comprises a first installation plate, the first installation plate is provided with a first adjusting hole, and the positive electrode overcharge unit is provided with a first connecting structure for movably connecting with the first adjusting hole; The first installation plate is provided with a second adjusting hole, and the positive electrode overcharge unit is provided with a second connecting structure for movably connecting with the second adjusting hole.

6. The hyper-thermal runaway test device of claim 5, wherein: The first connecting structure comprises a first nut, the outer portion of the positive electrode overcharge unit is provided with threads for matching the first nut, the positive electrode overcharge unit is arranged on the first adjusting hole, and the positive electrode overcharge unit is locked on the first installation plate through at least two first nuts; The second connecting structure comprises a second nut, the outer portion of the negative electrode overcharge unit is provided with threads for matching the second nut, the negative electrode overcharge unit is arranged on the second adjusting hole, and the negative electrode overcharge unit is locked on the first installation plate through at least two second nuts.

7. The hyper-thermal runaway test device of any one of claims 1-4, wherein: The positive electrode overcharge unit is provided with a positive electrode wire harness connecting position, and the installation assembly is provided with a positive electrode wire harness fixing position; The negative electrode overcharge unit is provided with a negative electrode wire harness connecting position, and the installation assembly is provided with a negative electrode wire harness fixing position.

8. The hyper-thermal runaway test device of claim 7, wherein: The application further comprises a positive electrode wire harness fixing structure and a negative electrode wire harness fixing structure; The positive electrode wire harness fixing structure comprises a first locking screw rod, and the first locking screw rod is used for fixing a positive electrode wire harness; The negative electrode wire harness fixing structure comprises a second locking screw rod, and the second locking screw rod is used for fixing a negative electrode wire harness.

9. The hyper-thermal runaway test device of claim 8, wherein: One end of the positive electrode wire harness is connected with the positive electrode overcharge unit through the positive electrode wire harness connecting position, and the other end of the positive electrode wire harness is connected with an external charging and discharging cabinet through the positive electrode wire harness fixing position. One end of the negative wire harness is connected with the negative overcharge unit through the negative wire harness connection site, and the other end of the negative wire harness is connected with the charging and discharging cabinet through the negative wire harness fixing site.

10. The hyper-thermal runaway test device of claim 5, wherein: The mounting assembly further comprises a second mounting plate, a clamping space for clamping the test sample is formed between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate are connected through a third connecting structure.

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