Test fixture and test system

Abstract

The utility model relates to the technical field of battery production, and discloses a test fixture and a test system, the test fixture comprises a base, a support, an ejector pin assembly and an adjusting member, the base is a base with a reference plane, the reference plane of the base is used for placing a battery to be tested, the support is arranged on the base and extends along a first direction, and the ejector pin assembly is arranged on the support. The ejector pin assembly is movably arranged on the support in the first direction and can move relative to the support in the first direction perpendicular to the datum plane so as to adjust the spacing distance between the ejector pin assembly and the base, and the adjusting piece is movably arranged on the support and can move relative to the support and drive the ejector pin assembly to move in the first direction to be close to the base. Therefore, the ejector pin assembly is in contact conduction with the pole of the to-be-tested battery. By adopting the test fixture and the test system, the tested battery meeting the quality requirement has the condition of secondary utilization and can be directly put into use, and the rejection rate of the battery in the production process is low.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and in particular to a test fixture and a test system. Background Art

[0002] During the production process, the battery needs to be formed and divided by charging and discharging equipment to activate the battery and determine its capacity. After that, the battery needs to be tested by testing equipment in different types of tests, such as performance testing and safety testing, to ensure that the produced battery meets quality requirements. When the existing battery is tested on the testing equipment, the bar plate is usually welded on the battery pole, and then the battery is connected to the testing equipment by bolt connection.

[0003] However, when the battery is tested, Bar plates need to be welded to the battery poles. After testing, the batteries that meet the quality requirements do not meet the conditions for secondary utilization and cannot be put into use directly. The scrap rate of batteries during the production process is relatively high. Utility Model Content

[0004] The utility model embodiment discloses a test fixture and a test system. After the test, the battery that meets the quality requirements is qualified for secondary utilization and can be directly put into use, and the scrap rate of the battery in the production process is low.

[0005] In the first aspect, the embodiment of the utility model discloses a test fixture, which is applied to an energy storage device. The test fixture includes a base, a bracket, a pin assembly and an adjusting member. The base is a base with a reference plane, and the reference plane of the base is used to place a battery to be tested. The bracket is arranged on the base, and the bracket extends along a first direction perpendicular to the reference plane. The pin assembly includes a mounting seat, a pin body, a voltage probe, a sliding member and an elastic member. The mounting seat is movably arranged on the bracket along the first direction, and the mounting seat can move relative to the bracket along the first direction to adjust the spacing distance between the pin assembly and the base. The pin body is arranged on the mounting seat, and the voltage probe is arranged on the mounting seat. The probe is inserted into the ejector body along the first direction, the sliding member is slidably inserted into the mounting seat along the first direction, the ejector body is inserted into the sliding member along the first direction, the two ends of the elastic member are respectively connected to a side of the mounting seat facing the base and an end of the ejector body facing the base, the adjusting member is movably arranged on the bracket, the adjusting member can move relative to the bracket and drive the mounting seat to move along the first direction close to the base, so that the ejector body and the voltage probe are both in contact with and connected to the pole of the battery to be tested, the ejector body is used to conduct the battery to be tested with the test equipment, and the voltage probe is used to collect voltage data of the battery to be tested.

[0006] As an optional implementation, in an embodiment of the utility model, the bracket is provided with a mounting piece, the adjusting piece has a connecting end and a free end, the connecting end is rotatably connected to the mounting piece, and the free end is used to apply a force to drive the connecting end to rotate relative to the mounting piece, so that the connecting end pushes the mounting seat to move along the first direction close to the base and contact and conduct with the pole of the battery to be tested.

[0007] As an optional implementation, in an embodiment of the utility model, the ejector pin assembly further includes a heat dissipation structure, the heat dissipation structure includes a heat sink, the heat sink is sleeved on one end of the ejector pin body facing the base, and the heat sink is used to dissipate the heat generated by the battery to be tested during testing.

[0008] As an optional embodiment, in an embodiment of the utility model, the test fixture also includes a carrier, which is movably arranged on the bracket along the first direction, and the test fixture includes two ejector pin assemblies, which are arranged on the carrier at intervals, one end of the mounting member is arranged on the bracket, and the other end of the mounting member extends in a direction away from the bracket and is located between the two ejector pin assemblies, and the connecting end is rotatably connected to one end of the mounting member located between the two ejector pin assemblies, and when the connecting end rotates relative to the mounting member, it pushes the carrier to move along the first direction close to the base, so that the two ejector pin assemblies are respectively in contact with and conductive with the two poles of the battery to be tested.

[0009] As an optional implementation, in an embodiment of the utility model, the test fixture also includes a sliding assembly, the sliding assembly includes a first fixing member, a second fixing member, a guide rod and a sleeve, the first fixing member and the second fixing member are arranged on the bracket at intervals along the first direction, the two ends of the guide rod are respectively connected to the first fixing member and the second fixing member, the sleeve is slidably arranged on the guide rod along the first direction, and the mounting seat is connected to the sleeve.

[0010] As an optional implementation, in an embodiment of the utility model, the test fixture also includes a carrier, and the carrier is connected to the bracket through the sliding assembly so that the carrier can be slidably arranged relative to the bracket along the first direction. The test fixture includes two ejector pin assemblies, and the two ejector pin assemblies are arranged at intervals on the carrier, and the two ejector pin assemblies are respectively used to contact and conduct with the two poles of the battery to be tested under the drive of the adjusting member.

[0011] As an optional embodiment, in an embodiment of the utility model, the bracket is also provided with two scales at intervals, the two scales are extended along the first direction, the two scales are used to measure the actual level of the carrier, and the test fixture also includes a level adjustment mechanism, the level adjustment mechanism is provided on the bracket, and the level adjustment mechanism is used to adjust the level of the carrier according to the actual level measured by the two scales.

[0012] As an optional implementation, in an embodiment of the utility model, the test fixture also includes a fixing component, the fixing component includes a positioning mechanism and a clamping mechanism, the positioning mechanism is arranged on the base, the positioning mechanism is used to position the battery to be tested, the clamping mechanism is arranged on the base, and the clamping mechanism is used to clamp or release the battery to be tested.

[0013] As an optional implementation, in an embodiment of the utility model, the positioning mechanism includes a plurality of positioners, and the plurality of positioners are spaced apart and distributed on the base, and the plurality of positioners are used to abut against the peripheral side surfaces of the battery to be tested. The clamping mechanism includes two clamping arms, and the two clamping arms are movably disposed on the base, and the two clamping arms can move relative to the base to move closer to or farther from each other, so as to clamp or release the battery to be tested.

[0014] In a second aspect, an embodiment of the utility model discloses a testing system, comprising a testing device and the testing fixture of the first aspect, wherein the testing device is electrically connected to the ejector pin assembly of the testing fixture, and the testing device is used to test the battery to be tested.

[0015] Compared with the prior art, the embodiments of the present invention have at least the following beneficial effects:

[0016] In the embodiment of the utility model, the battery to be tested is placed on the base, and the ejector assembly is arranged by a bracket extending in the first direction and arranged on the base, and the ejector assembly is movably arranged in the first direction, so that the ejector assembly can move in the first direction to adjust the spacing distance between the ejector assembly and the base, thereby providing sufficient space for the battery to be tested placed on the reference plane of the base, and the size of the spacing distance can be adjusted according to batteries of different sizes. At the same time, the adjusting member can be movably arranged on the bracket, and the ejector assembly can be driven to move relative to the bracket along the first direction close to the base by the relative movement of the adjusting member relative to the bracket, so that the ejector assembly is in contact and conductive with the pole of the battery to be tested. Based on this, by electrically connecting the ejector assembly to the test equipment, the battery to be tested is electrically connected to the test equipment by means of the ejector assembly through contact and conductive mode. When testing the battery, there is no need to weld the battery, which can save welding time, improve test efficiency, and will not cause damage to the battery. After the test, the battery that meets the quality requirements has the conditions for secondary use and can be directly put into use, and the scrap rate of the battery in the production process is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this technical field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a test fixture disclosed in Embodiment 1 of the present utility model;

[0019] Figure 2 It is a structural schematic diagram of a test fixture disclosed in Embodiment 1 of the present utility model from another perspective;

[0020] Figure 3 It is a structural schematic diagram of an ejector pin assembly disclosed in the first embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the test system disclosed in the second embodiment of the present utility model.

[0022] Description of main reference numerals

[0023] 100, test fixture; 10, base; 10a, reference plane; 11, bracket; 11a, mounting member; 11b, wire holder; 11c, scale; 12, ejector assembly; 121, mounting seat; 122, ejector body; 123, voltage probe; 124, sliding member; 125, elastic member; 126, wire; 126a, fixing hole; 127, heat sink; 13, adjusting member; 13a, connecting end; 13b, free end; 14, bearing member; 16, sliding assembly; 161, first fixing member; 162, second fixing member; 163, guide rod; 164, sleeve; 17, positioning mechanism; 17a, positioner; 18, clamping mechanism; 18a, clamping arm; 200, test system; 20, test equipment; a, battery to be tested; x, first direction. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0026] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0027] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0029] The utility model discloses a testing fixture and a testing system. After being tested, batteries that meet quality requirements are qualified for secondary utilization and can be directly put into use, and the scrap rate of the batteries in the production process is low.

[0030] Embodiment 1

[0031] Please also read Figure 1 and Figure 2 , is a structural schematic diagram of a test fixture 100 provided in the first embodiment of the utility model, the test fixture 100 includes a base 10, a bracket 11, a pin assembly 12 and an adjusting member 13, the base 10 is a base with a reference plane 10a, the reference plane 10a of the base 10 is used to place a battery a to be tested, the bracket 11 is arranged on the base 10, the bracket 11 is extended along a first direction x perpendicular to the reference plane 10a, the pin assembly 12 is movably arranged on the bracket 11 along the first direction x, the pin assembly 12 can move relative to the bracket 11 along the first direction x to adjust the spacing distance between the pin assembly 12 and the base 10, the adjusting member 13 is movably arranged on the bracket 11, the adjusting member 13 can move relative to the bracket 11 and drive the pin assembly 12 to move close to the base 10 along the first direction x, so that the pin assembly 12 is in contact with and conductive with the pole of the battery a to be tested.

[0032] When testing existing batteries, it is necessary to weld a Bar piece on the battery pole. If the Bar piece is not processed, the tested battery is not suitable for secondary use. If the Bar piece is processed by grinding, cleaning, polishing, etc. to make the battery suitable for secondary use, the tested battery can be put into use. However, when the battery pole needs to be welded again during use, there is a high risk of pole breakdown, resulting in battery leakage, which causes irreversible damage to the safety of the battery and a high scrap rate.

[0033] In view of the above problems, in this embodiment, the battery a to be tested is placed on the base 10, and the ejector assembly 12 is arranged by using the bracket 11 extending along the first direction x and arranged on the base 10, and the ejector assembly 12 is movably arranged along the first direction x, so that the ejector assembly 12 can move along the first direction x to adjust the spacing distance between the ejector assembly 12 and the base 10, thereby providing sufficient space for the battery a to be tested placed on the reference plane 10a of the base 10, and the size of the spacing distance can be adjusted according to batteries of different sizes. At the same time, the adjusting member 13 is movably arranged on the bracket 11, and the ejector assembly 12 can be driven to move relative to the bracket 11 along the first direction x close to the base 10 by the movement of the adjusting member 13 relative to the bracket 11, so that the ejector assembly 12 is in contact with and conductive with the pole of the battery a to be tested. Based on this, by electrically connecting the ejector pin assembly 12 to the test equipment, the battery a to be tested is electrically connected to the test equipment with the help of the ejector pin assembly 12 through contact conduction. When testing the battery, there is no need to weld the battery, which can save welding time, improve test efficiency, and will not cause damage to the battery. After the test, the battery that meets the quality requirements is qualified for secondary utilization and can be put into use directly, and the scrap rate of the battery in the production process is low.

[0034] In addition, compared with the existing battery, after welding the Bar sheet, it is necessary to use bolts to electrically connect it to the test equipment. This embodiment provides a test fixture 100, and uses the ejector assembly 12 to electrically connect the battery to the test equipment, which saves the operation of bolt connection, can be performed in a relatively small space, and avoids the problem of human factors affecting the test stability caused by bolt connection.

[0035] In some embodiments, the bracket 11 is provided with a mounting member 11a, and the adjusting member 13 has a connecting end 13a and a free end 13b, wherein the connecting end 13a is rotatably connected to the mounting member 11a, and the free end 13b is used to apply a force to drive the connecting end 13a to rotate relative to the mounting member 11a, so that the connecting end 13a pushes the ejector assembly 12 to move along the first direction x close to the base 10 and to contact and conduct with the pole of the battery a to be tested. In this way, by rotating the connecting end 13a of the adjusting member 13 to be connected to the mounting member 11a, and by applying a force to the free end 13b to drive the connecting end 13a to rotate relative to the mounting member 11a, the connecting end 13a can push the ejector assembly 12 to move along the first direction x close to the base 10 and to contact and conduct with the pole of the battery a to be tested, and the operation difficulty is relatively low and the efficiency is relatively high.

[0036] Exemplarily, the test fixture 100 also includes a carrier 14, which is movably arranged on the bracket 11 along the first direction x. The test fixture 100 includes two ejector pin assemblies 12, which are arranged at intervals on the carrier 14. One end of the mounting member 11a is arranged on the bracket 11, and the other end of the mounting member 11a extends in a direction away from the bracket 11 and is located between the two ejector pin assemblies 12. The connecting end 13a is rotatably connected to one end of the mounting member 11a located between the two ejector pin assemblies 12. When the connecting end 13a rotates relative to the mounting member 11a, it pushes the carrier 14 to move closer to the base 10 along the first direction x, so that the two ejector pin assemblies 12 are respectively in contact with and conductive with the two poles of the battery a to be tested. In this way, on the one hand, by arranging the bearing member 14 to carry the two ejector assemblies 12, the bearing member 14 can simultaneously drive the two ejector assemblies 12 to move along the first direction x, so that the two ejector assemblies 12 are simultaneously in contact with the two poles of the battery a to be tested, and the assembly efficiency of the battery a to be tested on the test fixture 100 is high, which can save the test time. On the other hand, the mounting member 11a is located between the two ejector assemblies 12, and when the connecting end 13a of the adjusting member 13 rotates and pushes the bearing member 14, the force position of the bearing member 14 is located between the two ejector assemblies 12, and the force pushing the bearing member 14 to move along the first direction x is relatively balanced, which can avoid the bearing member 14 from tilting due to unbalanced force during the pushing process (that is, the bearing member 14 is not perpendicular to the first direction x), thereby affecting the contact and conduction between the two ejector assemblies 12 and the two poles of the battery a to be tested, for example, one ejector assembly 12 is in contact with one pole of the battery a to be tested, while the other ejector assembly 12 is spaced from the other pole of the battery a to be tested, and is not in contact and conducted.

[0037] In some embodiments, Figure 3As shown, the ejector assembly 12 includes a mounting seat 121, an ejector body 122 and a voltage probe 123. The mounting seat 121 is movable on the bracket 11 along the first direction x, the ejector body 122 is arranged on the mounting seat 121, and the voltage probe 123 is penetrated through the ejector body 122 along the first direction x. The adjusting member 13 can move relative to the bracket 11 and drive the mounting seat 121 to move closer to the base 10 along the first direction x, so that the ejector body 122 and the voltage probe 123 are both in contact with the pole of the battery a to be tested, and the ejector body 122 is used to conduct the battery a to be tested with the test equipment, and the voltage probe 123 is used to collect the voltage data of the battery a to be tested. In this way, the adjusting member 13 can move relative to the bracket 11 to drive the mounting seat 121 to move closer to the base 10 along the first direction x, so that the mounting seat 121 can simultaneously drive the ejector body 122 and the voltage probe 123 to contact and conduct with the pole of the battery a to be tested. After the ejector body 122 is electrically connected to the test equipment, the test equipment can transmit current to the battery a to be tested through the ejector body 122 , and after the voltage probe 123 is electrically connected to the test equipment, the voltage data of the battery a to be tested can be used.

[0038] Exemplarily, the ejector assembly 12 further includes a sliding member 124 and an elastic member 125. The sliding member 124 is slidably disposed in the mounting seat 121 along the first direction x, the ejector body 122 is disposed in the sliding member 124 along the first direction x, and the two ends of the elastic member 125 are respectively connected to one side of the mounting seat 121 facing the base 10 and one end of the ejector body 122 facing the base 10. In this way, when the mounting seat 121 simultaneously drives the ejector body 122 and the voltage probe 123 to contact and conduct with the pole of the battery a to be tested, the mounting seat 121 can continue to move toward the base 10 along the first direction x. At this time, the ejector body 122 and the voltage probe 123 remain stationary, and the mounting seat 121 and the ejector body 122 squeeze the elastic member 125 to prevent the mounting seat 121 from moving too far, thereby causing the ejector body 122 and the voltage probe 123 to squeeze the pole of the battery a to be tested, thereby damaging the pole of the battery a to be tested.

[0039] In some embodiments, the ejector assembly 12 further includes a heat dissipation structure (not shown), which is disposed on the ejector body 122 and is used to dissipate the heat generated by the battery a to be tested during the test. In this way, when the battery a to be tested is being tested, since the battery pole is made of metal material and has a certain impedance, the contact surface between the ejector body 122 and the battery pole also has a certain impedance, and the battery a to be tested will generate heat, and the impedance increases with the temperature, and the generated heat will make the temperature higher. Then, by providing the heat dissipation structure, the heat is transferred to the ejector body 122, and the heat dissipation structure can dissipate the heat, thereby reducing the temperature of the ejector body 122, and avoiding the situation where the temperature at the battery pole is too high and the test risk is increased.

[0040] Exemplarily, the heat dissipation structure includes a heat sink 127, which is sleeved on one end of the ejector body 122 facing the base 10. In this way, the heat of the ejector body 122 is transferred through the heat sink 127, and the heat is dissipated by utilizing the larger heat dissipation area of ​​the heat sink 127, that is, the air cooling-heat sink 127 mode, which can effectively reduce the temperature and prevent the temperature from being too high.

[0041] In some other embodiments, the heat dissipation structure may also adopt compressed air-heat sink 127, water cooling-heat pipe and other structures to achieve heat dissipation.

[0042] Optionally, a gold coating (not shown) may be provided on the surface of the ejector body 122, and the contact impedance between the ejector body 122 and the battery pole may be reduced by utilizing the property that gold does not react with oxygen at high temperatures. Alternatively, other materials with similar properties to the above may be used for coating, which is not specifically limited in this embodiment.

[0043] In some embodiments, the ejector assembly 12 further includes a wire 126, one end of which is electrically connected to the end of the probe body away from the base 10, and the other end of the wire 126 is used to be electrically connected to the test equipment. In this way, by electrically connecting one end of the wire 126 to the end of the probe body away from the base 10, when the battery is placed using the test fixture 100 and tested by the test equipment, the other end of the wire 126 can be electrically connected to the test equipment, and the probe body is connected to the battery a to be tested to achieve electrical connection between the battery a to be tested and the test equipment. When the test fixture 100 is not in use, the other end of the wire 126 can be separated from the test equipment, and the test fixture 100 can be separated from the test equipment.

[0044] The conductor 126 may be a conductive soft copper wire or a conductor 126 made of other materials, which is not specifically limited in this embodiment.

[0045] For example, in combination Figure 1 and Figure 3 As shown, the bracket 11 is provided with a wire fixer 11b, and one end of the wire 126 for electrically connecting to the test equipment is provided with a fixing hole 126a, and the fixing hole 126a is used to connect with the wire fixer 11b to fix the wire 126. In this way, by fixing the end of the wire 126 for electrically connecting to the test equipment through the wire fixer 11b, it is possible to prevent the wire 126 from shaking and causing damage when the test fixture 100 is transported, or when the test fixture 100 is used in the test equipment to test the battery a to be tested, the shaking of the wire 126 causes the electrical connection between the battery a to be tested and the test equipment to be unstable, thereby affecting the test accuracy.

[0046] In some embodiments, Figure 1 and Figure 2As shown, the test fixture 100 further includes a sliding assembly 16, which is disposed on the bracket 11, and the ejector assembly 12 is connected to the bracket 11 through the sliding assembly 16, so that the ejector assembly 12 can be slidably disposed relative to the bracket 11 along the first direction x. In this way, the ejector assembly 12 can slide relative to the bracket 11 along the first direction x through the sliding assembly 16, thereby adjusting the spacing distance between the ejector assembly 12 and the base 10.

[0047] Exemplarily, the sliding assembly 16 includes a first fixing member 161, a second fixing member 162, a guide rod 163 and a sleeve 164. The first fixing member 161 and the second fixing member 162 are arranged at intervals on the bracket 11 along the first direction x. The two ends of the guide rod 163 are respectively connected to the first fixing member 161 and the second fixing member 162. The sleeve 164 is slidably arranged on the guide rod 163 along the first direction x, and the ejector assembly 12 is connected to the sleeve 164. In this way, the guide rod 163 is arranged by using the first fixing member 161 and the second fixing member 162, and the guide rod 163 can extend along the first direction x. The sleeve 164 is slidably arranged on the guide rod 163 along the first direction x. When the sleeve 164 slides relative to the guide rod 163 along the first direction x, the sleeve 164 can drive the ejector assembly 12 to slide relative to the bracket 11 along the first direction x.

[0048] The first fixing member 161 and the second fixing member 162 may be plate-shaped structures or block-shaped structures, which is not specifically limited in this embodiment.

[0049] Specifically, the bearing member 14 is connected to the bracket 11 through the sliding assembly 16, so that the bearing member 14 can slide relative to the bracket 11 along the first direction x. The bearing member 14 is connected to the sleeve 164, and the sleeve 164 slides along the guide rod 163 to drive the bearing member 14 to slide relative to the bracket 11 along the first direction x.

[0050] In some embodiments, the test fixture 100 further includes a horizontal adjustment mechanism (not shown), which is disposed on the bracket 11 and is used to adjust the level of the carrier 14. In this way, the level of the carrier 14 is adjusted by the horizontal adjustment mechanism so that the two ejector pin assemblies 12 on the carrier 14 are at the same height (the distance from the base 10 along the first direction x is equal), so that the carrier 14 can simultaneously drive the two ejector pin assemblies 12 to contact and conduct with the two poles of the battery a to be tested.

[0051] Optionally, the level adjustment mechanism can be four legs, which are arranged on the base 10 and spaced apart at the four corners of the base 10, and each leg is lifted and lowered by a bolt and a nut. In this way, the levelness can be adjusted by adjusting the height of each leg.

[0052] For example, Figure 2As shown, the bracket 11 is also provided with two scales 11c at intervals, and the two scales 11c are extended along the first direction x. The two scales 11c are used to measure the actual level of the support member 14, and the level adjustment mechanism is used to adjust the level of the support member 14 according to the actual level measured by the two scales 11c. In this way, the actual level of the support member 14 can be determined by the degrees of the two scales 11c. For example, when the degrees of the two scales 11c are the same, the support member 14 is in a horizontal state. When the degrees of the two scales 11c are different, the support member 14 is in a tilted state, and the support member 14 needs to be adjusted by the level adjustment mechanism so that the support member 14 is adjusted to a horizontal state.

[0053] In some embodiments, the test fixture 100 further includes a fixing component (not shown), which is disposed on the base 10 and is used to fix the battery a to be tested. In this way, the battery a to be tested is fixed to the base 10 by the fixing component. On the one hand, when the ejector assembly 12 is brought into contact with the pole of the battery a to be tested, the battery a to be tested can be prevented from being offset and affecting the alignment and contact between the ejector assembly 12 and the pole of the battery a to be tested, thereby improving the assembly accuracy of the battery a to be tested to the test fixture 100. On the other hand, when the test fixture 100 is applied to the test equipment to test the battery a to be tested, the battery a to be tested can be prevented from being offset and affecting the test stability, thereby improving the test accuracy.

[0054] Alternatively, if Figure 1 As shown, the fixing assembly includes a positioning mechanism 17 and a clamping mechanism 18. The positioning mechanism 17 is arranged on the base 10, and the positioning mechanism 17 is used to position the battery a to be tested. The clamping mechanism 18 is arranged on the base 10, and the clamping mechanism 18 is used to clamp or loosen the battery a to be tested. In this way, the measuring battery is positioned by the positioning mechanism 17, so that after the battery a to be tested is placed at a specific position of the base 10, the battery a to be tested is further supported by the clamping mechanism 18 to fix the battery a to be tested. When the battery a to be tested is tested, the clamping mechanism 18 can loosen the battery a to be tested, so as to remove the battery a to be tested from the test fixture 100. Among them, the specific position is the position where the pole of the battery a to be tested is aligned with the ejector assembly 12.

[0055] Exemplarily, the positioning mechanism 17 includes a plurality of positioners 17a, which are spaced apart on the base 10 and are used to abut against the peripheral side of the battery a to be tested. In this way, the battery a to be tested can be positioned at a specific position of the base 10 by abutting against the peripheral side of the battery a to be tested by the plurality of positioners 17a.

[0056] Preferably, in order to improve the accuracy of the locator 17a in locating the battery a to be tested, the plurality of locators 17a may be positioned on the base 10 in a three-point positioning manner.

[0057] Exemplarily, the clamping mechanism 18 includes two clamping arms 18a, which are movably disposed on the base 10. The two clamping arms 18a can move closer to or farther from each other relative to the base 10 to clamp or release the battery a to be tested. In this way, the battery a to be tested can be clamped by moving the two clamping arms 18a closer to each other relative to the base 10, and the battery can be released when the two clamping arms 18a move farther from each other relative to the base 10.

[0058] The first embodiment of the utility model provides a test fixture 100, in which a battery a to be tested is placed on a base 10, and a pin assembly 12 is arranged by a bracket 11 extending along a first direction x and arranged on the base 10, and the pin assembly 12 is movably arranged along the first direction x, so that the pin assembly 12 can move along the first direction x to adjust the spacing distance between the pin assembly 12 and the base 10, thereby providing sufficient space for the battery a to be tested placed on the reference plane 10a of the base 10, and the size of the spacing distance can be adjusted according to batteries of different sizes. At the same time, an adjusting member 13 can be movably arranged on the bracket 11, and the adjustment member 13 can be moved relative to the bracket 11 to drive the pin assembly 12 to move relative to the bracket 11 along the first direction x close to the base 10, so that the pin assembly 12 is in contact with and conductive with the pole of the battery a to be tested. Based on this, by electrically connecting the ejector pin assembly 12 to the test equipment, the battery a to be tested is electrically connected to the test equipment with the help of the ejector pin assembly 12 through contact conduction. When testing the battery, there is no need to weld the battery, which can save welding time, improve test efficiency, and will not cause damage to the battery. After the test, the battery that meets the quality requirements is qualified for secondary utilization and can be put into use directly, and the scrap rate of the battery in the production process is low.

[0059] In addition, compared with the existing battery, after welding the Bar sheet, it is necessary to use bolts to electrically connect it to the test equipment. This embodiment provides a test fixture 100, and uses the ejector assembly 12 to electrically connect the battery to the test equipment, which saves the operation of bolt connection, can be performed in a relatively small space, and avoids the problem of human factors affecting the test stability caused by bolt connection.

[0060] Embodiment 2

[0061] See also Figure 4 , which is a structural schematic diagram of a test system 200 provided in the second embodiment of the present utility model, the test system 200 includes a test device 20 and the test fixture 100 of the first embodiment, the test device 20 is electrically connected to the ejector assembly of the test fixture 100, and the test device 20 is used to test the battery to be tested.

[0062] The second embodiment of the present invention provides a testing system 200. After the test, the batteries that meet the quality requirements are qualified for secondary use and can be directly put into use. The scrap rate of the batteries in the production process is low.

[0063] The above is a detailed introduction to a test fixture and a test system disclosed in the embodiment of the utility model. This article uses individual examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the test fixture and the test system of the utility model and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A test fixture, applied to an energy storage device, characterized in that: include: The base is a base having a reference plane, and the reference plane of the base is used to place the battery to be tested; A bracket, the bracket is arranged on the base, and the bracket is extended along a first direction perpendicular to the reference plane; An ejector assembly, the ejector assembly comprising a mounting seat, an ejector body, a voltage probe, a sliding member and an elastic member, the mounting seat being movably arranged on the bracket along the first direction, the mounting seat being movable relative to the bracket along the first direction to adjust the spacing distance between the ejector assembly and the base, the ejector body being arranged on the mounting seat, the voltage probe being passed through the ejector body along the first direction, the sliding member being slidably passed through the mounting seat along the first direction, the ejector body being passed through the sliding member along the first direction, and two ends of the elastic member being respectively connected to one side of the mounting seat facing the base and one end of the ejector body facing the base; as well as An adjusting member, wherein the adjusting member can be movably disposed on the bracket, and the adjusting member can move relative to the bracket and drive the mounting seat to move along the first direction close to the base, so that the ejector body and the voltage probe are both in contact with the pole of the battery to be tested and are connected, the ejector body is used to conduct the battery to be tested and the test equipment, and the voltage probe is used to collect voltage data of the battery to be tested.

2. The test fixture according to claim 1, characterized in that: The bracket is provided with a mounting piece, and the adjusting piece has a connecting end and a free end, the connecting end is rotatably connected to the mounting piece, and the free end is used to apply a force to drive the connecting end to rotate relative to the mounting piece, so that the connecting end pushes the mounting seat to move along the first direction close to the base and contact and conduct with the pole of the battery to be tested.

3. The test fixture according to claim 1, characterized in that: The ejector pin assembly further includes a heat dissipation structure, which includes a heat sink. The heat sink is sleeved on one end of the ejector pin body facing the base, and is used to dissipate heat generated by the battery to be tested during testing.

4. The test fixture according to claim 2, characterized in that: The test fixture also includes a carrier, which is movably arranged on the bracket along the first direction. The test fixture includes two ejector pin assemblies, which are arranged on the carrier at an interval. One end of the mounting member is arranged on the bracket, and the other end of the mounting member extends in a direction away from the bracket and is located between the two ejector pin assemblies. The connecting end is rotatably connected to one end of the mounting member located between the two ejector pin assemblies. When the connecting end rotates relative to the mounting member, it pushes the carrier to move along the first direction close to the base, so that the two ejector pin assemblies are respectively in contact with and conductive with the two poles of the battery to be tested.

5. The test fixture according to any one of claims 1 to 3, characterized in that: The test fixture also includes a sliding assembly, which includes a first fixing member, a second fixing member, a guide rod and a sleeve. The first fixing member and the second fixing member are arranged on the bracket at intervals along the first direction, and the two ends of the guide rod are respectively connected to the first fixing member and the second fixing member. The sleeve is slidably arranged on the guide rod along the first direction, and the mounting seat is connected to the sleeve.

6. The test fixture according to claim 5, characterized in that: The test fixture also includes a carrier, which is connected to the bracket through the sliding assembly so that the carrier can be slidably arranged relative to the bracket along the first direction. The test fixture includes two ejector pin assemblies, which are arranged at intervals on the carrier, and the two ejector pin assemblies are respectively used to contact and conduct with the two poles of the battery to be tested under the drive of the adjusting member.

7. The test fixture according to claim 6, characterized in that: The bracket is also provided with two scales at intervals, the two scales are extended along the first direction, the two scales are used to measure the actual level of the support member, and the test fixture also includes a level adjustment mechanism, the level adjustment mechanism is provided on the bracket, and the level adjustment mechanism is used to adjust the level of the support member according to the actual level measured by the two scales.

8. The test fixture according to any one of claims 1 to 3, characterized in that: The test fixture also includes a fixing assembly, which includes a positioning mechanism and a clamping mechanism. The positioning mechanism is arranged on the base and is used to position the battery to be tested. The clamping mechanism is arranged on the base and is used to clamp or release the battery to be tested.

9. The test fixture according to claim 8, characterized in that: The positioning mechanism includes a plurality of positioners, which are spaced apart on the base and are used to abut against the peripheral side surfaces of the battery to be tested. The clamping mechanism includes two clamping arms, which are movably disposed on the base and can move relative to the base to move closer to or farther from each other, so as to clamp or release the battery to be tested.

10. A testing system, characterized in that: The invention comprises a testing device and a testing fixture as claimed in any one of claims 1 to 9, wherein the testing device is electrically connected to the ejector pin assembly of the testing fixture, and the testing device is used to test the battery to be tested.

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