Clamp for battery testing and battery testing device

Abstract

The utility model discloses a clamp used for battery testing and a battery testing device, the clamp used for battery testing comprises a body, the body forms an accommodating space and has an electromagnetic shielding characteristic, and the body comprises a first clamping part and a second clamping part which are relatively movable so as to clamp and fix a battery to be tested in the accommodating space. According to the embodiment of the utility model, the body of the clamp for testing the battery is a clamp with an electromagnetic shielding function, so that the clamp not only has a clamping function, but also has a function of preventing interference of electromagnetic signals by adopting the body with the electromagnetic shielding function, and the test result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, and more particularly to a clamp and a battery testing device for battery testing. Background Art

[0002] The test fixture is a crucial accessory for new energy battery testers. Conventional fixtures primarily serve to ensure electrical contact between the positive and negative electrodes during battery testing and to control the clamping strength of the battery. However, during battery testing, electromagnetic signals generated by the instrument's operation and the surrounding environment can interfere with test results, leading to significant errors in conventional battery measurement results. Utility Model Content

[0003] One purpose of the present invention is to provide a fixture for battery testing, which can at least solve the technical problem in the prior art of large errors in battery test results caused by electromagnetic signals.

[0004] Another object of the present invention is to provide a battery testing device comprising the above-mentioned fixture for battery testing.

[0005] In order to achieve the above objectives, the present utility model provides the following technical solutions.

[0006] According to the first embodiment of the present invention, a fixture for battery testing includes: a body, which forms a receiving space and has electromagnetic shielding properties, and includes a relatively movable first clamping portion and a second clamping portion to clamp and fix the battery to be tested located in the receiving space.

[0007] Optionally, the body includes a Faraday cage structure that can be opened and closed, and the Faraday cage encloses the receiving space.

[0008] Optionally, the main body includes: a top plate and a bottom plate, the top plate and the bottom plate are spaced apart and relatively distributed, the top plate and the bottom plate are metal parts, the top plate is provided with the first clamping portion, and the bottom plate is provided with the second clamping portion; a metal shielding mesh, the metal shielding mesh is located between the top plate and the bottom plate, the metal shielding mesh, the top plate and the bottom plate cooperate to form the Faraday cage structure, the metal shielding mesh in the Faraday cage structure is an annular member, the top plate and the bottom plate are located at both axial ends of the annular member; wherein, at least one of the top plate, the bottom plate and the metal shielding mesh is openable, or at least two of the top plate, the bottom plate and the metal shielding mesh are detachably connected to place the battery to be tested in the receiving space.

[0009] Optionally, the metal shielding net includes: a first net body and a second net body, the first net body and the second net body are detachably connected, and when the first net body and the second net body are connected, they form an annular structure.

[0010] Optionally, the first net body is a "one" - shaped member, and the second net body is a "匚" - shaped member.

[0011] Optionally, the body further includes: a back plate, the back plate is respectively connected to the top plate and the bottom plate, and the first net body is attached to the back plate.

[0012] Optionally, a wire hole is formed on the back plate, and the wire hole is used for connecting to a tester.

[0013] Optionally, metal slide rails are respectively provided on the top plate and the bottom plate, the slide rails have card slots, and the second net body is slidably connected to the card slots.

[0014] Optionally, the outer periphery of the metal shielding net has a metal edge to form a card strip for cooperating with the card slot; and / or, the slide rail includes: a card slot strip frame, the card slot strip frame is formed by bending a metal sheet to form the card slot, the side of the card slot facing the metal shielding net has an opening; a spring, the spring is located in the card slot, one end of the spring is connected to the card slot strip frame; a metal contact part, the metal contact part is located at the opening and is connected to the other end of the spring, and the metal contact part is abutted against the part of the metal shielding net extending into the card slot through the spring.

[0015] The battery testing device according to the second - aspect embodiment of the present invention includes: a fixture, the fixture is the fixture for battery testing as described in any one of the above, and the fixture is used to fix a battery to be tested; a tester, the tester is electrically connected to the battery to be tested.

[0016] The fixture for battery testing according to the embodiment of the present invention, the body of the embodiment of the present invention is a fixture with electromagnetic shielding function. By adopting a body with electromagnetic shielding characteristics, it not only has a clamping function but also has a function of preventing electromagnetic signal interference, making the test result more accurate. <——>Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0019] Figure 1is a schematic diagram of a clamp according to an embodiment of the present invention from one perspective;

[0020] Figure 2 is a schematic diagram of a clamp according to an embodiment of the present invention from another perspective;

[0021] Figure 3 is a schematic diagram of a clamp according to an embodiment of the present invention from another perspective;

[0022] Figure 4 This is a schematic diagram of the assembly of the second mesh body of the clamp according to one embodiment of the present utility model;

[0023] Figure 5 It is a schematic diagram of the assembly of the clamping strip and the clamping slot according to one embodiment of the present utility model.

[0024] Figure Numbers

[0025] fixture 100;

[0026] A first probe 10;

[0027] a second probe 20;

[0028] Top plate 30;

[0029] Top slide rail 31; top card slot 32; front upper card slot 33;

[0030] Bottom plate 40;

[0031] Bottom slide rail 41; bottom card slot 42; front lower card slot 43;

[0032] Metal shielding mesh 50;

[0033] First mesh body 51;

[0034] Back card slot 511;

[0035] Second mesh body 52;

[0036] First plate 521; second plate 522; third plate 523;

[0037] Card strip 53;

[0038] Top card strip 531; bottom card strip 532; back card strip 533; front upper card strip 534; front lower card strip 535;

[0039] Back plate 60;

[0040] Wire hole 61; side card slot 62;

[0041] Card slot frame 711; metal sheet 712; metal contact portion 713; spring 714;

[0042] The battery to be tested is located at position A; the probe is located at position B. DETAILED DESCRIPTION

[0043] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0044] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0045] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0046] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0047] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0048] The following describes in detail a fixture 100 for battery testing according to an embodiment of the present invention with reference to the accompanying drawings.

[0049] like Figures 1 to 5 As shown, the fixture 100 for battery testing according to an embodiment of the present invention includes: a body.

[0050] Specifically, the body forms a receiving space and has electromagnetic shielding properties. The body includes a relatively movable first clamping portion and a second clamping portion to clamp and fix the battery to be tested in the receiving space. For example, the battery to be tested is located in Figure 1 A position.

[0051] In other words, the fixture 100 for battery testing according to the embodiment of the present invention is mainly composed of a main body, wherein the main body has electromagnetic shielding properties, and the main body is formed with a receiving space, and the receiving space can be used to install the battery to be tested. In addition, in order to achieve the clamping and fixation of the battery to be tested, the first clamping part can be used to abut against one side of the battery to be tested, and the second clamping part can be used to abut against the other side of the battery to be tested, and the battery to be tested can be taken out and placed by the relatively movable first clamping part and the second clamping part. In addition, the main body can also be opened to facilitate the removal of the battery to be tested from the receiving space and the installation of the battery to be tested into the receiving space. Optionally, a first probe 10 is provided on the first clamping part, and a second probe 20 is provided on the second clamping part, and the battery to be tested can be tested by clamping the first probe 10 and the second probe 20. Probe position B is as shown in FIG. Figure 2 shown.

[0052] It should be noted that the main body can be electromagnetically shielded by forming a Faraday cage, using metal barriers, conductive coatings, absorbing materials, conductive pads, etc. By using a main body with electromagnetic shielding function, interference with test results from electromagnetic signals generated by the operation of the test instrument and the widespread presence of electromagnetic signals in the environmental background can be eliminated during the battery test.

[0053] Therefore, in this embodiment, the main body of the embodiment of the utility model is a clamp with electromagnetic shielding function. By adopting a main body with electromagnetic shielding characteristics, it not only has a clamping function, but also has a function of preventing interference from electromagnetic signals, making the test results more accurate.

[0054] According to one embodiment of the present invention, the main body includes an openable and closable Faraday cage structure, which encloses a storage space. Specifically, in this embodiment, the main body can be a Faraday cage structure, constructed from metal. Metal components are positioned on the exterior of the battery under test to shield it from interference from external electromagnetic signals, enhancing testing accuracy. Furthermore, the Faraday cage has a storage space for the battery under test.

[0055] In some specific embodiments of the present invention, the main body includes: a top plate 30 , a bottom plate 40 and a metal shielding mesh 50 .

[0056] Specifically, the top plate 30 and the bottom plate 40 are spaced apart and arranged relative to each other. The top plate 30 and the bottom plate 40 are made of metal. The top plate 30 is provided with a first clamping portion, and the bottom plate 40 is provided with a second clamping portion. A metal shielding mesh 50 is located between the top plate 30 and the bottom plate 40. The metal shielding mesh 50, the top plate 30, and the bottom plate 40 cooperate to form a Faraday cage structure. The metal shielding mesh 50 in the Faraday cage structure is an annular member, and the top plate 30 and the bottom plate 40 are located at the axial ends of the annular member. At least one of the top plate 30, the bottom plate 40, and the metal shielding mesh 50 can be opened, or at least two of the top plate 30, the bottom plate 40, and the metal shielding mesh 50 can be detachably connected to allow the battery to be placed in the receiving space.

[0057] In other words, in this embodiment, the top plate 30, bottom plate 40, and metal shielding mesh 50 enclose a Faraday cage structure, wherein the top plate 30 and bottom plate 40 are spaced apart, and the metal shielding mesh 50 is located between the top plate 30 and bottom plate 40. After the battery under test is placed in the receiving space, the battery under test is located between the top plate 30 and bottom plate 40. The metal shielding mesh 50 can form an annular channel, with the top plate 30 located at one end of the annular channel and the bottom plate 40 located at the other end of the annular channel. The top plate 30 and bottom plate 40 are both made of metal, thereby placing the battery under test within the Faraday cage structure. The cross-sectional shape of the annular channel is not limited and can be circular, square, or a special shape.

[0058] Moreover, in this embodiment, the Faraday cage structure can be opened in a variety of ways to remove or place the battery to be tested, for example, at least one of the top plate 30, the bottom plate 40 and the metal shielding mesh 50 can be opened, or at least two of the top plate 30, the bottom plate 40 and the metal shielding mesh 50 can be detachably connected.

[0059] For example, the top plate 30 and the bottom plate 40 are spaced apart in the vertical direction, with the top plate 30 located above the bottom plate 40. The battery under test in the receiving space is located above the top plate 30 and below the bottom plate 40, with portions of the metal shielding mesh 50 provided on the front, rear, left, and right sides.

[0060] In this embodiment, the use of a top plate 30, a bottom plate 40, and a metal shielding mesh 50 facilitates the construction of a Faraday cage structure, reduces overall weight, and ensures clamping strength and stability. For example, the first and second clamping portions on the top and bottom plates 30, 40 clamp and secure the battery under test. Furthermore, the mesh structure of the metal shielding mesh 50 ensures ventilation and allows for observation of the battery under test.

[0061] According to an embodiment of the present utility model, the metal shielding net 50 includes a first net body 51 and a second net body 52. The first net body 51 and the second net body 52 are detachably connected. When the first net body 51 and the second net body 52 are connected, they form an annular structure. The test battery can be placed or taken out when the first net body 51 and the second net body 52 are separated. When the first net body 51 and the second net body 52 are connected, the first net body 51 can be respectively connected to the top plate 30 and the bottom plate 40, and the second net body 52 is at least connected to the first net body 51, so that the test battery can be located inside the Faraday cage structure. In addition, when the first net body 51 and the second net body 52 are connected to form an annular structure, the first net body 51 and the second net body 52 can be respectively semi-arc structures; one can be a sheet body and the other can be an arc structure; or one can itself be a quasi-annular structure with an opening on the side wall, and the other can close the opening, etc., which are not limited herein.

[0062] In this embodiment, by adopting the metal shielding net 50 including the first net body 51 and the second net body 52, it is convenient for the metal shielding net 50 to cooperate with the top plate 30 and the bottom plate 40 to form a Faraday cage structure.

[0063] In some specific embodiments of the present utility model, the first net body 51 is a quasi-"-" shaped member, and the second net body 52 is a quasi- "匚" shaped member. For example, the first net body 51 is a sheet body extending in the up and down direction, and the second net body 52 is a "匚" shaped member with an opening facing the first net body 51. During use, the second net body 52 can be driven to move backward along the front and back directions, close to the first net body 51, so that the front, back, left, and right sides of the test battery are all inside the Faraday cage structure; or the second net body 52 can be driven to move forward, away from the first net body 51, so that the receiving space is opened to take out or place the test battery.

[0064] In this embodiment, by adopting the first net body 51 as a quasi-"-" shaped member and the second net body 52 as a quasi- "匚" shaped member, it is convenient to open and close the receiving space, and it is easy to align and connect the first net body 51 and the second net body 52. In addition, when using a structure such as a slide rail to connect with the second net body 52, a linear slide rail or the like can be adopted, which can reduce the manufacturing difficulty of the slide rail and other structures.

[0065] For the sake of convenience of description, the second mesh body 52 may include a first plate body 521, a second plate body 522 and a third plate body 523. The first plate body 521 and the second plate body 522 are spaced apart and distributed oppositely. The third plate body 523 is located between the first plate body 521 and the second plate body 522 and is respectively connected to the first plate body 521 and the second plate body 522. A "C"-shaped member is formed by the cooperation of the first plate body 521, the second plate body 522 and the third plate body 523. For example, the front end of the first plate body 521 is connected to the left side of the third plate body 523, the front end of the second plate body 522 is connected to the right side of the third plate body 523. The third plate body 523 is located on the front side of the first mesh body 51, and the first plate body 521 and the second plate body 522 are respectively located on one side of the third plate body 523 close to the first mesh body 51.

[0066] According to an embodiment of the present invention, the body further includes: a back plate 60, the back plate 60 is respectively connected to the top plate 30 and the bottom plate 40, and the first mesh body 51 is attached to the back plate 60. Among them, the back plate 60 can play a supporting role. For example, the upper end of the back plate 60 is connected to the top plate 30, and the lower end is connected to the bottom plate 40. Through the back plate 60, the structural stability of the body can be increased, and the phenomenon of collapse can be avoided.

[0067] In some specific embodiments of the present invention, a wire hole 61 is formed on the back plate 60, and the wire hole 61 is used to connect to a tester. The signals collected by the first probe 10 and the second probe 20 can be transmitted to the tester through the signal wire passing through the wire hole 61. For example, the first probe 10 is installed on the top plate 30, and a signal wire hole is reserved inside the top plate 30. The signal wire can be connected to the first probe 10, and passes through the signal wire hole of the top plate 30 and the wire hole 61 of the back plate 60 to be connected to the tester. Another example is that the second probe 20 is installed on the bottom plate 40, and a signal wire hole is reserved inside the bottom plate 40. The signal wire can be connected to the second probe 20, and passes through the signal wire hole of the bottom plate 40 and the wire hole 61 of the back plate 60 to be connected to the tester.

[0068] In this embodiment, the wire hole 61 provided on the back plate 60 can be used for signal wire routing and grounding.

[0069] According to an embodiment of the present invention, metal slide rails are respectively provided on the top plate 30 and the bottom plate 40. The slide rails have card slots, and the second mesh body 52 is slidably connected to the card slots. That is to say, the second mesh body 52 is respectively slidably connected to the top plate 30 and the bottom plate 40, which can improve the operation convenience. In this embodiment, through the slide rails, while ensuring close contact and connection with the metal shielding net 50, the metal shielding net 50 can be conveniently disassembled to facilitate the replacement of the battery under test.

[0070] In some specific embodiments of the present invention, the outer periphery of the metal shielding mesh 50 has a metal edging to form a card strip 53 that cooperates with the card slot, which is beneficial to improving the connection tightness and facilitating the assembly and relative movement of the metal shielding mesh 50 and the top plate 30 or bottom plate 40.

[0071] According to one embodiment of the present invention, the slide rail includes: a slot frame 711, a spring 714, and a metal contact portion 713. The slot frame 711 is formed by bending a metal sheet 712 to form a slot. The slot has an opening on the side facing the metal shielding net 50. The spring 714 is located in the slot. One end of the spring 714 is connected to the slot frame 711. The metal contact portion 713 is located in the opening and is connected to the other end of the spring 714. The spring 714 is used to make the metal contact portion 713 abut against the portion of the metal shielding net 50 that extends into the slot.

[0072] In other words, the slide rail can be formed by bending a metal sheet 712 to form a grooved slot frame 711 structure. The outer end of the slot can be connected to the clip 53 through a metal contact portion 713. A spring 714 is provided between the metal contact portion 713 and the slot frame 711. By applying elastic force to the spring 714, the connection between the metal contact portion 713 and the portion of the metal shielding mesh 50 extending into the slot, such as the metal contact portion 713 and the clip 53, is ensured.

[0073] Optionally, the top plate 30 has metal top rails 31 on both sides. In this embodiment, the top rails 31 on both sides of the top plate 30 can achieve a sliding connection with the second net body 52. ​​For example, the left edge of the top plate 30 has a top rail 31 extending in the front-to-back direction, and the right edge of the top plate 30 has a top rail 31 extending in the front-to-back direction. The top rail 31 on the left side of the top plate 30 is connected to the upper end of the first plate 521 of the second net body 52, and the top rail 31 on the right side of the top plate 30 is connected to the upper end of the second plate 522 of the second net body 52, so that the second net body 52 can slide in the front-to-back direction.

[0074] Optionally, the front side of the top plate 30 has a top card slot 32 with an inner wall made of metal material, and the top card slot 32 can improve the connection tightness between the top plate 30 and the third plate body 523.

[0075] Optionally, the bottom plate 40 has metal bottom rails 41 on both sides. In this embodiment, the bottom rails 41 on both sides of the bottom plate 40 enable a sliding connection with the second net body 52. ​​For example, the left edge of the bottom plate 40 has a bottom rail 41 extending in the front-to-back direction, and the right edge of the bottom plate 40 has a bottom rail 41 extending in the front-to-back direction. The bottom rail 41 on the left side of the bottom plate 40 is connected to the lower end of the first plate 521 of the second net body 52, and the bottom rail 41 on the right side of the bottom plate 40 is connected to the lower end of the second plate 522 of the second net body 52, allowing the second net body 52 to slide in the front-to-back direction.

[0076] Optionally, the front side of the bottom plate 40 has a bottom card slot 42 with an inner wall made of metal; the bottom card slot 42 can improve the connection tightness between the bottom plate 40 and the third plate body 523.

[0077] In some specific embodiments of the present invention, the outer periphery of the metal shielding mesh 50 has a metal edging to form a clamping strip 53 that cooperates with the metal clamping slot, which can improve the strength and tightness of the connection position.

[0078] Optionally, the bottom slide rail 41 can be used as a guide rail for the movement of the second net body 52. ​​During operation, the bottom card slot on the bottom slide rail 41 can be used as a connecting piece to communicate with the card strip 53 of the second net body 52.

[0079] Optionally, the upper ends of the first plate 521 and the second plate 522 are each formed with metal edging to form a top clip 531, which can be in close contact with the top rail 31 to ensure communication. In this case, the second net 52 and the top plate 30 can be connected via the top rail 31 and the top clip 531.

[0080] Optionally, the lower ends of the first plate 521 and the second plate 522 are clad with metal to form a bottom clip 532, which can be in close contact with the bottom rail 41 to ensure communication. In this case, the second net 52 and the bottom plate 40 can be connected via the bottom rail 41 and the bottom clip 532.

[0081] Optionally, the left and right front ends of the first mesh body 51 have back-cage slots 511. The back side of the first plate 521 is formed with a metal edging to form a back-cage strip 533. The back-cage strip 533 is in close contact with the back-cage slots 511 to ensure connectivity. In this case, the second mesh body 52 is electrically connected to the first mesh body 51 via the back-cage strip 533 and the back-cage slots 511.

[0082] Optionally, the upper end of the third plate 523 is formed with a metal edging to form a front upper retaining strip 534. A front upper retaining slot 33 is provided on the lower front end of the top plate 30. The front upper retaining strip 534 is in close contact with the front upper retaining slot 33 to ensure communication. In this case, the second net 52 and the top plate 30 are connected via the front upper retaining strip 534 and the front upper retaining slot 33.

[0083] Optionally, the lower end of the third plate 523 is formed with a metal edging to form a front lower retaining strip 535. A front lower retaining slot 43 is provided on the upper front end of the bottom plate 40. The front lower retaining strip 535 is in close contact with the front lower retaining slot 43 to ensure communication. In this case, the second net 52 is connected to the bottom plate 40 via the front lower retaining strip 535 and the front lower retaining slot 43.

[0084] Optionally, the second mesh body 52 is connected to the top plate 30, the bottom plate 40 and the back plate 60 through metal edging, and is connected to the top plate 30, the bottom plate 40 and the back plate 60 and grounded to ensure that a Faraday cage is formed during the closed test to shield the influence of external electromagnetic signals on the battery test.

[0085] Optionally, the outer edge of the back panel 60 is provided with a side slot 62. The inner wall of the side slot 62 can be made of metal. Through the side slot 62, it can be tightly coupled with the first mesh body 51, which is conducive to ensuring electrical connectivity. For example, the left and right edges of the back panel 60 are respectively provided with a side slot 62. The side slot 62 on the left edge and the side slot 62 on the right edge of the back panel 60 extend in the vertical direction respectively. During installation, the left end of the first mesh body 51 can be tightly connected to the side slot 62 on the left edge of the back panel 60, and the right end of the first mesh body 51 can be tightly connected to the side slot 62 on the right edge of the back panel 60.

[0086] Optionally, the metal shielding mesh 50 is surrounded by metal edging, specifically forming a top card strip 531, a bottom card strip 532, a back card strip 533, a front upper card strip 534, and a front lower card strip 535. The above-mentioned card strips are connected and communicated with the card slots of the top plate 30, the bottom plate 40 and the back plate 60. When the metal cage is closed, they are connected to form a Faraday cage.

[0087] Optionally, the metal shielding mesh 50 is formed into a clip strip 53 after being metal-wrapped.

[0088] The utility model also discloses a battery testing device, comprising: a clamp 100 and a tester.

[0089] Specifically, the fixture 100 is a battery testing fixture 100 according to any of the aforementioned embodiments. The fixture 100 is used to secure the battery under test, and the tester is electrically connected to the battery under test. Because the fixture 100 according to the present embodiment has advantages such as more accurate test results, the battery testing device according to the present embodiment also has the same advantages, which will not be described in detail here.

[0090] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A fixture (100) for battery testing, characterized in that: Comprising: A main body, which forms a receiving space and has electromagnetic shielding characteristics. The main body includes a relatively movable first clamping portion and a second clamping portion for clamping and fixing a battery under test located in the receiving space.

2. The battery test fixture (100) according to claim 1, characterized in that: The main body includes a Faraday cage structure that can be opened and closed, and the Faraday cage encloses the receiving space.

3. The battery test fixture (100) according to claim 2, characterized in that: The main body includes: A top plate (30) and a bottom plate (40), the top plate (30) and the bottom plate (40) are spaced apart and distributed oppositely. The top plate (30) and the bottom plate (40) are metal parts. The first clamping portion is provided on the top plate (30), and the second clamping portion is provided on the bottom plate (40); A metal shielding net (50), the metal shielding net (50) is located between the top plate (30) and the bottom plate (40). The metal shielding net (50), the top plate (30) and the bottom plate (40) cooperate to form the Faraday cage structure. The metal shielding net (50) in the Faraday cage structure is an annular part, and the top plate (30) and the bottom plate (40) are located at both ends of the axial direction of the annular part; Wherein, at least one of the top plate (30), the bottom plate (40) and the metal shielding net (50) can be opened, or at least two of the top plate (30), the bottom plate (40) and the metal shielding net (50) are detachably connected to place the battery under test into the receiving space.

4. The battery test fixture (100) according to claim 3, characterized in that: The metal shielding net (50) includes: A first net body (51) and a second net body (52), the first net body (51) and the second net body (52) are detachably connected and form an annular structure when connected.

5. The battery test fixture (100) according to claim 4, characterized in that: The first net body (51) is a "one" - shaped part, and the second net body (52) is a "C" - shaped part.

6. The battery test fixture (100) according to claim 4, characterized in that: The main body further includes: A back plate (60), the back plate (60) is respectively connected to the top plate (30) and the bottom plate (40), and the first net body (51) is attached to the back plate (60).

7. The battery test fixture (100) according to claim 6, characterized in that: A wire hole (61) is formed on the back plate (60), and the wire hole (61) is used for connecting with a tester.

8. The battery test fixture (100) according to claim 4, 5 or 6, characterized in that: Metal slide rails are respectively provided on the top plate (30) and the bottom plate (40), and the slide rails have card slots, and the second net body (52) is slidably connected with the card slots.

9. The battery test fixture (100) according to claim 8, characterized in that: The outer periphery of the metal shielding net (50) has a metal edge to form a card strip (53) for cooperating with the card slot; and / or, The slide rail includes: A card slot strip frame (711), the card slot strip frame (711) forms the card slot after being bent by a metal sheet (712), and the card slot has an opening on the side facing the metal shielding net (50); A spring (714), the spring (714) is located in the card slot, and one end of the spring (714) is connected to the card slot strip frame (711); A metal contact portion (713) is located in the opening and connected to the other end of the spring (714). The spring (714) allows the metal contact portion (713) to abut against a portion of the metal shielding net (50) extending into the slot.

10. A battery testing device, characterized in that: include: A fixture (100), wherein the fixture (100) is a fixture (100) for battery testing according to any one of claims 1 to 9, and the fixture (100) is used to fix a battery to be tested; A tester is electrically connected to the battery to be tested.

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