Constant-resistance discharge test mechanism and test equipment

Abstract

The utility model provides a constant-resistance discharge test mechanism and test equipment, the constant-resistance discharge test mechanism comprises a test platform, a test support and a test assembly, and the test assembly comprises a first test branch and a second test branch; each of the first test branch and the second test branch comprises a current-limiting resistor, an induction piece and a test contact which are connected in sequence, the two current-limiting resistors are arranged on the test platform and are connected with each other, and each current-limiting resistor is provided with an identification electrode; a hand touch electrode is arranged between the induction piece of the first test branch and the corresponding test contact, and a shunt resistor is connected between the identification electrode of the second test branch and the corresponding test contact; according to the invention, the test result can be visually displayed through the induction part, whether the to-be-tested battery carries dangerous electric shock voltage or non-dangerous induction potential can be distinguished, and the safety performance and the discharge test efficiency are effectively improved.

Description

Technical Field

[0001] The present application belongs to the technical field of battery testing, and specifically relates to a constant resistance discharge testing mechanism and testing equipment. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. As the production of lithium-ion batteries continues to expand, their high-capacity ultra-thin technology development, quality inspection and quality tracking are increasingly valued by the industry, and more and more attention is paid to the safety performance testing of scrapped lithium-ion batteries.

[0003] Existing discharge test mechanisms are composed of discharge contacts, resistors, wire tubes, metal spring pads and hand-touch electrodes connected in series, which cannot intuitively display whether the battery under test is fully discharged. If the battery under test is not fully discharged, it cannot test whether the battery under test has a dangerous electric shock voltage, which is likely to cause safety risks. Therefore, how to provide a discharge test mechanism that can test whether the battery under test is fully discharged, whether there is a dangerous electric shock voltage, and can intuitively display the test results is an urgent problem to be solved. Utility Model Content

[0004] The present application provides a constant resistance discharge test mechanism and test equipment, which are used to solve the problem of how to test whether a battery to be tested is fully discharged, and how to intuitively know the test results.

[0005] In order to solve the above technical problems, the present application provides a constant resistance discharge test mechanism, including a test platform, a test bracket and a test assembly, wherein the test assembly includes a first test branch and a second test branch;

[0006] The first test branch and the second test branch each include a current limiting resistor, an induction element, and a test contact connected in sequence, the two current limiting resistors are arranged on the test platform and are connected to each other, and each current limiting resistor is provided with an identification electrode;

[0007] A hand-touch electrode is arranged between the induction element of the first test branch and the corresponding test contact, and a shunt resistor is connected between the identification electrode of the second test branch and the corresponding test contact.

[0008] As a further improvement of the present application, the test bracket includes two support rods relatively arranged on the test platform, and a connecting rod for connecting the two support rods;

[0009] Two sliders are slidably arranged on the connecting rod, and a test track for the two sliders to slide is opened on the surface of the connecting rod. The two test contacts are slidably arranged on the test bracket through the sliders at corresponding positions to adjust the relative distance between the two test contacts according to the battery to be tested.

[0010] As a further improvement of the present application, one end of the slider close to the test contact is protruding from the side wall of the connecting rod;

[0011] The test contact, the induction element and the current-limiting resistor are connected via a wire tube, one end of the wire tube is connected to the current-limiting resistor, and the other end of the wire tube passes through the slider and is connected to the induction element and the current-limiting resistor in sequence.

[0012] As a further improvement of the present application, the wire tube includes a first wire tube, a second wire tube and a third wire tube connected in sequence;

[0013] The first wire tube is connected to the current limiting resistor, the second wire tube is connected to the inductive component after passing through the slider, the third wire tube is connected to the test contact, and the test contact is arranged at the end of the third wire tube.

[0014] As a further improvement of the present application, the sliding block includes a sliding seat straddling the connecting rod, and a sliding guide rod penetrating the sliding seat and capable of sliding on the test track;

[0015] One end of the sliding seat close to the test contact is protruding from the side wall of the connecting rod, and the second wire tube is arranged to penetrate the sliding seat.

[0016] As a further improvement of the present application, a plurality of adjusting bolts are arranged at both ends of the connecting rod in the horizontal direction, and adjustment holes are opened at the positions of the two support rods corresponding to the adjusting bolts. The adjusting bolts are adapted to the adjusting holes and can be moved in the vertical direction within the adjusting holes. One of the plurality of adjusting bolts is passed through the adjustment hole opened on the corresponding support rod.

[0017] As a further improvement of the present application, the test platform is an insulating test platform, the bottom of the test platform is recessed inward and has a hollow structure, the test bracket is erected above the test platform, and the two current limiting resistors are arranged on the side walls of the test platform.

[0018] As a further improvement of the present application, the test contact is a copper test contact, the ends of the two test contacts are configured as a plate-like structure so that the battery to be tested is mounted between the two test contacts, and the induction member is a neon tube.

[0019] As a further improvement of the present application, the shunt resistor is arranged in parallel between the identification electrode and the test contact of the second test branch;

[0020] One end of the shunt resistor is connected to the identification electrode of the second test branch, and the other end of the shunt resistor is connected to the test contact of the second test branch.

[0021] The present application also provides a constant resistance discharge test device, comprising any of the above-mentioned constant resistance discharge test mechanisms.

[0022] Compared with the prior art, the constant resistance discharge test mechanism and test equipment provided in the embodiment of the present application include a test platform, a test bracket and a test assembly. During operation, the tester places the battery to be tested between two test contacts and forms a loop between the first test branch and the second test branch, and then simultaneously touches the hand touch electrode and the identification electrode of the first test branch. When the battery to be tested is charged, the neon tube will produce a glow, so that the tester can intuitively know whether the battery to be tested has been discharged. Otherwise, the battery to be tested is not charged. If the battery to be tested is charged and has a non-dangerous high potential, the charged potential of the battery to be tested will be greatly reduced due to the large internal resistance of the potential source, and the neon tube will not continue to glow. If the battery to be tested has a dangerous electric shock voltage, the internal resistance of its potential source is small, and the connection of a shunt resistor will hardly reduce the charged potential of the battery to be tested, so the neon tube will remain lit. Therefore, when it is realized whether the battery to be tested is charged, it can further distinguish whether the charged condition is a dangerous electric shock voltage or a non-dangerous induced potential. The operation is simple, and the test results can be intuitively displayed through the induction component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a structural schematic diagram of a constant resistance discharge test mechanism provided in an embodiment of the present application;

[0025] Figure 2 It is a structural schematic diagram of a slider in a constant resistance discharge test mechanism provided in an embodiment of the present application;

[0026] Figure 3 It is a structural schematic diagram of the adjustment hole in the constant resistance discharge test mechanism provided in the embodiment of the present application;

[0027] Description of reference numerals:

[0028] 1-test platform; 2-test bracket; 3-test assembly; 4-first test branch; 5-second test branch;

[0029] 10-current limiting resistor; 11-inductive element; 12-test contact; 13-identification electrode; 14-hand touch electrode; 15-first wire tube; 16-second wire tube; 17-third wire tube;

[0030] 20-support rod; 21-connecting rod; 22-sliding block; 23-test rail; 25-sliding seat; 26-sliding guide rod; 27-adjusting bolt; 28-adjusting hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. All directional indications in the embodiments of the present application (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0033] In order to make the description of the disclosed content more detailed and complete, the following is an illustrative description of the implementation methods and specific embodiments of the present application; however, this is not the only form of implementing or using the specific embodiments of the present application. The implementation methods cover the features of multiple specific embodiments and the method steps and sequences used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences.

[0034] Please refer to Figure 1-Figure 3 In order to solve the problem of how to test whether the battery to be tested is fully discharged and how to intuitively know the test results, the embodiment of the present application provides a constant resistance discharge test mechanism and test equipment. Please refer to Figure 1 , which is a structural schematic diagram of a constant-resistance discharge test mechanism provided in an embodiment of the present application, wherein the constant-resistance discharge test mechanism includes a test platform 1, a test bracket 2 and a test component 3, wherein the test component 3 includes a first test branch 4 and a second test branch 5.

[0035] As an optional implementation, the first test branch 4 and the second test branch 5 mentioned above both include a current limiting resistor 10, an induction component 11 and a test contact 12 connected in sequence. It can be observed that the two current limiting resistors 10 are both arranged at the side wall position of the test platform 1, and the two current limiting resistors 10 are connected to each other.

[0036] It should be noted that the connecting wire between the above-mentioned two current limiting resistors 10 can be integrated into the test platform 1 or can be set at the bottom of the test platform 1 for connection. The connection relationship between the two current limiting resistors 10 of this application is not shown in the accompanying drawings, but it does not affect the setting relationship between the two current limiting resistors 10.

[0037] For further information, please refer to Figure 1 It can be observed that an identification electrode 13 is provided on each current limiting resistor 10, and the present application provides a hand touch electrode 14 between the induction element 11 of the first test branch 4 and the corresponding test contact 12, and a shunt resistor (not shown in the figure) is provided between the identification electrode 13 of the second test branch 5 and the corresponding test contact 12.

[0038] Similarly, although the present application does not show the shunt resistor in the drawings, it does not affect the positional relationship of the shunt resistor being arranged in parallel in the second test branch 5, and those skilled in the art should be aware of this.

[0039] In an embodiment of the present application, a shunt resistor is connected in parallel between the identification electrode 13 and the test contact 12 of the second test branch 5. Since the identification electrode 13 is arranged on the current limiting resistor 10, and an induction element 11 is connected between the current limiting resistor 10 and the test contact 12, it is equivalent to connecting the shunt resistor in parallel between the test contact 12, the induction element 11, and the current limiting resistor 10 of the second test branch 5; specifically, one end of the shunt resistor is connected to the identification electrode 13 of the second test branch 5, and the other end of the shunt resistor is connected to the test contact 12 of the second test branch 5.

[0040] Furthermore, it is preferred to set the ends of the two test contacts 12 as a plate-like structure so that the battery to be tested can be mounted between the two test contacts 12, thereby forming a loop between the first test branch 4, the battery to be tested and the second test branch 5. Since copper has very stable and strong conductivity, the present application preferably sets the two test contacts 12 as copper test contacts.

[0041] As an optional embodiment, the test contact 12, the inductive element 11 and the current limiting resistor 10 provided in the present application are connected via a wire tube, one end of the wire tube is connected to the current limiting resistor 10, and the other end of the wire tube is connected to the inductive element 11 and the current limiting resistor 10 in sequence to achieve a series connection between the test contact 12, the inductive element 11 and the current limiting resistor 10.

[0042] Furthermore, the above-mentioned test platform 1 needs to be set as an insulating test platform 1. It can be observed that the bottom of the test platform 1 is recessed inward and has a hollow structure. At the same time, the test bracket 2 is erected above the test platform 1, and two current limiting resistors 10 are set on the side wall of the test platform 1.

[0043] In the embodiment of the present application, the test bracket 2 includes support rods 20 disposed on two side walls of the test platform 1 , and the tops of the two support rods 20 are connected by a connecting rod 21 .

[0044] Specifically, two sliders 22 are slidably arranged on the connecting rod 21, and a test track 23 for the two sliders 22 to slide is opened on the top surface of the connecting rod 21. Since one end of the slider 22 close to the test contact 12 protrudes from the test setting of the connecting rod 21, the present application connects one end of the wire tube to the current limiting resistor 10, and passes the other end of the wire tube through the protruding slider 22 part and then connects to the induction element 11 and the current limiting resistor 10 in sequence.

[0045] Since the two test contacts 12 are slidably arranged on the test bracket 2 through the sliders 22 at the corresponding positions, and the sliders 22 can move on the test track 23, the relative distance between the two test contacts 12 can be further adjusted by adjusting the relative distance between the two sliders 22, so as to adapt to batteries to be tested of different sizes, so as to adjust the relative distance between the two test contacts 12 according to the different sizes of the batteries to be tested.

[0046] Please refer to further Figure 2 , is a structural schematic diagram of a slider 22 in a constant-resistance discharge test mechanism provided in an embodiment of the present application. The slider 22 provided in the present application includes a sliding seat 25 arranged across a connecting rod 21, and a sliding guide rod 26 that passes through the sliding seat 25 and can slide on a test track 23. It can be observed that both ends of the sliding seat 25 are provided with a downwardly bent structure, and the downwardly bent portion here is clamped on the connecting rod 21 to enable the sliding seat 25 to move on the connecting rod 21. Similarly, one end of the sliding seat 25 close to the test contact 12 is protruded from the test setting of the connecting rod 21, so that the wire tube passes through the sliding seat 25 and is connected to the test contact 12 at the corresponding position.

[0047] Furthermore, the wire tube provided in the present application includes a first wire tube 15, a second wire tube 16 and a third wire tube 17 which are connected in sequence, the first wire tube 15 is connected to the current limiting resistor 10, one end of the second wire tube 16 is connected to the first wire tube 15, the other end of the second wire tube 16 passes through the sliding seat 25 and is connected to the induction member 11 at the corresponding position, one end of the third wire tube 17 is connected to the second wire tube 16, and the other end of the third wire tube 17 is connected to the test contact 12 at the corresponding position. It can be observed that the test contact 12 is arranged at the end of the third wire tube 17, and is preferably arranged as a copper test contact 12 with a plate-like structure.

[0048] It should be noted that in order to achieve effective utilization of the spatial structure, the present application sets the first wire tube 15 as a bending structure according to the positional relationship between the current limiting resistor 10 and the test bracket 2. Since the second wire tube 16 needs to pass through the sliding seat 25, the second wire tube 16 is set in the vertical direction. Since the test contact 12 at the end of the third wire tube 17 needs to be placed on the battery to be tested, the third wire tube 17 is set in the horizontal direction.

[0049] Since a hand touch electrode 14 is arranged between the sensing element 11 of the first test branch 4 and the corresponding test contact 12, the hand touch electrode 14 can be arranged at one end of the second wire tube 16 close to the test contact 12, or at one end of the third wire tube 17 close to the sensing element 11, or at the connection node between the second wire tube 16 and the third wire tube 17. As long as the positional relationship between the sensing element 11 and the corresponding test contact 12 arranged in the first test branch 4 can be satisfied, the present application does not impose any further restrictions on this.

[0050] Furthermore, the test stand 2 provided in the present application can also adjust the height position and the horizontal position, please refer to Figure 3 , is a structural schematic diagram of an adjustment hole 28 in a constant-resistance discharge test mechanism provided in an embodiment of the present application. In the present application, a plurality of adjustment bolts 27 are arranged at both ends of a connecting rod 21 in a horizontal direction. The two corresponding connecting rods 21 in the figure are both arranged with two adjustment bolts 27 in a horizontal direction. Adjustment holes 28 are provided at positions of the two support rods 20 corresponding to the adjustment bolts 27. The size of the adjustment hole 28 is adapted to the size of the adjustment bolt 27, and the adjustment bolt 27 can move in the vertical direction in the adjustment hole 28. In the present application, one of the plurality of adjustment bolts 27 is arranged to pass through the adjustment hole 28 provided in the corresponding support rod 20.

[0051] Specifically, when the height position of the test bracket 2 needs to be moved, it can be moved by adjusting the position of the bolt 27 in the adjustment hole 28. When the horizontal position of the test bracket 2 needs to be moved, the adjusting bolt 27 set on the same side can be replaced to move it. The present application does not impose any further restrictions on the number of adjusting bolts 27 that need to be set on the same side.

[0052] In a specific embodiment provided in the present application, the above-mentioned induction element 11 needs to be set in the form of a neon tube. The principle of neon tube luminescence is mainly based on gas discharge and ionization of inert gas. The neon tube is a gas discharge display device, and its basic structure includes two metal electrodes and a glass tube filled with neon gas. When a voltage is applied between the two electrodes, the neon gas in the neon tube will be discharged by the electric field to produce visible light. The present application is based on this characteristic of the neon tube to intuitively display whether there is a dangerous electric shock voltage in the battery to be tested.

[0053] Specifically, when applying the above-mentioned constant resistance discharge test mechanism, the tester first places the battery to be tested between the two test contacts 12 to form a loop between the first test branch 4 and the second test branch 5. Since the second test branch 5 is provided with a shunt resistor in parallel, the tester is required to touch the hand touch electrode 14 and the identification electrode 13 of the first test branch 4 at the same time. When the battery to be tested is charged, the neon tube will generate a glow, so that the tester can intuitively know whether the battery to be tested has been discharged.

[0054] Furthermore, if the battery to be tested is charged and has a non-dangerous high potential, the internal resistance of the potential source is large, which greatly reduces the charged potential of the battery to be tested, and the neon tube will not continue to ignite; if the battery to be tested has a dangerous electric shock voltage, because the internal resistance of the potential source is small, connecting a shunt resistor will hardly reduce the charged potential of the battery to be tested, so the neon tube will continue to ignite. Therefore, when it is realized whether the battery to be tested is charged, it is possible to further distinguish whether the charged condition is a dangerous electric shock voltage or a non-dangerous induced potential. The operation is simple and the test results can be displayed intuitively.

[0055] As for the specific implementation principle of igniting the neon tube by touching the hand touch electrode 14 and the identification electrode 13, reference can be made to the relevant principle of igniting the neon tube in the electric tester in the prior art, and this application will not elaborate on this.

[0056] It should be noted that a hand touch electrode 14, a sensing element 11 and a test contact 12 may also be provided on the second test branch 5 for other applications. Of course, the embodiment of the present application only provides a specific implementation method of the hand touch electrode 14, the sensing element 11 and the test contact 12 through the first test branch 4, and this does not constitute any limitation on the constant resistance discharge test mechanism of the present application.

[0057] Based on the above constant resistance discharge test mechanism, the present application also provides a constant resistance discharge test device, which is used to test whether the battery to be tested is charged and whether it is a dangerous electric shock voltage or a non-dangerous induced potential.

[0058] For other details about the constant resistance discharge test equipment for implementing the above technical solution, please refer to the description of the constant resistance discharge test mechanism provided in the above application embodiment, which will not be repeated here.

[0059] The constant resistance discharge test mechanism and test equipment provided by the embodiment of the present application include a test platform, a test bracket and a test assembly. During operation, the tester places the battery to be tested between two test contacts and forms a loop between the first test branch and the second test branch, and then simultaneously touches the hand touch electrode and the identification electrode of the first test branch. When the battery to be tested is charged, the neon tube will produce a glow, so that the tester can intuitively know whether the battery to be tested has been discharged. Otherwise, the battery to be tested is not charged. If the battery to be tested is charged and has a non-dangerous high potential, the charged potential of the battery to be tested will be greatly reduced due to the large internal resistance of the potential source, and the neon tube will not continue to glow. If the battery to be tested has a dangerous electric shock voltage, the internal resistance of the potential source is small, and the connection of the shunt resistor will hardly reduce the charged potential of the battery to be tested, so the neon tube will continue to glow. Therefore, when it is realized whether the battery to be tested is charged, it can further distinguish whether the charged condition is a dangerous electric shock voltage or a non-dangerous induced potential. The operation is simple, and the test results can be intuitively displayed through the induction component.

[0060] It can be understood that the technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments are merely exemplary embodiments used to illustrate the principles of the present application, but the present application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of the present application, and these modifications and improvements are also considered to be within the scope of protection of the present application.

Claims

1. A constant resistance discharge test mechanism, characterized in that: It includes a test platform, a test bracket and a test assembly, wherein the test assembly includes a first test branch and a second test branch; The first test branch and the second test branch each include a current limiting resistor, an induction element, and a test contact connected in sequence, the two current limiting resistors are arranged on the test platform and are connected to each other, and each current limiting resistor is provided with an identification electrode; A hand-touch electrode is arranged between the induction element of the first test branch and the corresponding test contact, and a shunt resistor is connected between the identification electrode of the second test branch and the corresponding test contact.

2. The constant resistance discharge test mechanism according to claim 1, characterized in that: The test bracket comprises two support rods arranged opposite to each other on the test platform, and a connecting rod for connecting the two support rods; Two sliders are slidably arranged on the connecting rod, and a test track for the two sliders to slide is opened on the surface of the connecting rod. The two test contacts are slidably arranged on the test bracket through the sliders at corresponding positions to adjust the relative distance between the two test contacts according to the battery to be tested.

3. The constant resistance discharge test mechanism as claimed in claim 2, characterized in that: One end of the slider close to the test contact protrudes from the side wall of the connecting rod; The test contact, the induction element and the current-limiting resistor are connected via a wire tube, one end of the wire tube is connected to the current-limiting resistor, and the other end of the wire tube passes through the slider and is connected to the induction element and the current-limiting resistor in sequence.

4. The constant resistance discharge test mechanism as claimed in claim 3, characterized in that: The wire tube comprises a first wire tube, a second wire tube and a third wire tube connected in sequence; The first wire tube is connected to the current limiting resistor, the second wire tube is connected to the inductive component after passing through the slider, the third wire tube is connected to the test contact, and the test contact is arranged at the end of the third wire tube.

5. The constant resistance discharge test mechanism as claimed in claim 4, characterized in that: The sliding block comprises a sliding seat straddling the connecting rod, and a sliding guide rod penetrating the sliding seat and capable of sliding on the test track; One end of the sliding seat close to the test contact is protruding from the side wall of the connecting rod, and the second wire tube is arranged to penetrate the sliding seat.

6. The constant resistance discharge test mechanism as claimed in claim 2, characterized in that: Several adjusting bolts are arranged at both ends of the connecting rod in the horizontal direction, and adjusting holes are opened at the positions of the two support rods corresponding to the adjusting bolts. The adjusting bolts are adapted to the adjusting holes and can be moved in the adjusting holes in the vertical direction. One of the several adjusting bolts is passed through the adjusting hole opened on the corresponding support rod.

7. The constant resistance discharge test mechanism according to claim 1, characterized in that: The test platform is an insulating test platform, the bottom of the test platform is inwardly recessed and provided with a hollow structure, the test bracket is erected above the test platform, and the two current-limiting resistors are arranged on the side walls of the test platform.

8. The constant resistance discharge test mechanism according to claim 1, characterized in that: The test contacts are copper test contacts, the ends of the two test contacts are arranged as plate-shaped structures so that the battery to be tested is mounted between the two test contacts, and the induction element is a neon tube.

9. The constant resistance discharge test mechanism according to claim 1, characterized in that: The shunt resistor is arranged in parallel between the identification electrode and the test contact of the second test branch; One end of the shunt resistor is connected to the identification electrode of the second test branch, and the other end of the shunt resistor is connected to the test contact of the second test branch.

10. A constant resistance discharge test device, characterized in that: The constant resistance discharge test equipment comprises the constant resistance discharge test mechanism as described in any one of claims 1-9.

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