A battery testing apparatus

Abstract

The application discloses a battery testing device, wherein a positive probe of a positive probe assembly is electrically connected with a positive electrode of a battery to be tested and a positive voltage terminal of a voltmeter, a negative probe of a negative probe assembly is electrically connected with a negative electrode of the battery to be tested and a negative voltage terminal of the voltmeter, and is electrically connected with a negative current terminal of a current source through a negative current line, a first auxiliary probe of a first auxiliary probe assembly is electrically connected with the positive probe, a second auxiliary probe assembly is arranged on the same side of the battery to be tested as the negative probe assembly, a second auxiliary probe of the second auxiliary probe assembly is electrically connected with the first auxiliary probe and is electrically connected with a positive current terminal of the current source through a positive current line, and the positive current line and the negative current line are twisted shielded wires. The application can significantly improve the testing precision of the testing device and effectively meet the use demand of users.

Description

Technical Field

[0001] This application relates to the field of battery testing technology, and in particular to a battery testing device. Background Technology

[0002] Alternating current internal resistance (ACIR) is a key parameter for evaluating battery performance. It reflects not only the battery's conductivity and electrode reaction kinetics, but also its cycle life, charge / discharge efficiency, and safety. Therefore, conducting accurate ACIR tests using battery testing equipment is crucial for ensuring battery quality and optimizing battery design.

[0003] However, in related technologies, for batteries with opposite tabs such as long blade batteries, short blade batteries, cylindrical batteries, and pouch batteries, the ACIR testing accuracy of battery testing equipment is usually low and cannot meet the user's needs. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the related technologies, this application provides a battery testing device to solve the problem of low ACIR testing accuracy in the battery testing devices of the related technologies.

[0005] To address the aforementioned technical problems, in a first aspect, this application provides a battery testing device, which includes:

[0006] A current source having a positive current terminal and a negative current terminal;

[0007] A voltmeter has a positive voltage terminal and a negative voltage terminal;

[0008] A positive electrode probe assembly includes a positive electrode probe, which is used to electrically connect to the positive electrode of the battery under test and to the positive electrode voltage terminal.

[0009] A negative electrode probe assembly includes a negative electrode probe for electrical connection to the negative electrode of the battery under test. The negative electrode probe is electrically connected to the negative electrode voltage terminal and to the negative electrode current terminal via a negative electrode current line.

[0010] The first auxiliary probe assembly includes a first auxiliary probe, which is electrically connected to the positive probe.

[0011] The second auxiliary probe assembly is configured to be disposed on the same side of the battery under test as the negative probe assembly. The second auxiliary probe assembly includes a second auxiliary probe, which is electrically connected to the first auxiliary probe and electrically connected to the positive current terminal through a positive current line. The positive current line and the negative current line are twisted-pair shielded wires.

[0012] In one possible implementation of the first aspect, the second auxiliary probe assembly and the negative electrode probe assembly are used to be disposed on the negative electrode side of the battery to be tested;

[0013] The first auxiliary probe assembly and the positive electrode probe assembly are used to be disposed on the positive electrode side of the battery to be tested.

[0014] In a possible implementation of the first aspect, the second auxiliary probe assembly and the negative electrode probe assembly are disposed on one side of the battery under test in the vertical direction, and the first auxiliary probe assembly and the positive electrode probe assembly are disposed on the other side of the battery under test in the vertical direction.

[0015] In one possible implementation of the first aspect, the positive probe and the first auxiliary probe are electrically connected via a metal component.

[0016] In a possible implementation of the first aspect, the positive probe is electrically connected to the positive voltage terminal via a positive voltage line, and the outer sides of the positive voltage line from one end to the other are covered with a shielding layer; and / or,

[0017] The negative probe and the negative voltage terminal are electrically connected via a negative voltage line, and the outer side of the negative voltage line from one end to the other is wrapped with a shielding layer.

[0018] In a possible implementation of the first aspect, the battery test setup further includes:

[0019] frame;

[0020] A conveying mechanism is provided on the frame and is used to convey a tray to the test station so that the battery to be tested on the tray can be electrically connected to the positive electrode probe and the negative electrode probe.

[0021] Before the tray is conveyed to the test station, the second auxiliary probe assembly and the negative probe assembly are disposed on one side of the conveying mechanism in a direction perpendicular to the conveying direction of the conveying mechanism, and the first auxiliary probe assembly and the positive probe assembly are disposed on the other side of the conveying mechanism.

[0022] In a possible implementation of the first aspect, the first auxiliary probe assembly is movably disposed on the rack; the battery testing equipment further includes a first driving member for driving the first auxiliary probe assembly to move closer to or away from the second auxiliary probe assembly, such that the first auxiliary probe comes into contact with the second auxiliary probe when it is close to the second auxiliary probe; and / or,

[0023] The second auxiliary probe assembly is movably disposed on the rack; the battery testing equipment further includes a second driving member, which is used to drive the second auxiliary probe assembly to move closer to or away from the first auxiliary probe assembly, so that the second auxiliary probe is in contact with the first auxiliary probe when it is close to the first auxiliary probe.

[0024] In a possible implementation of the first aspect, the first auxiliary probe component further includes:

[0025] The mounting base has an elastic element between it and the first auxiliary probe. The elastic element is used to elastically deform when the first auxiliary probe and the second auxiliary probe are docked, so that the first auxiliary probe and the second auxiliary probe are in a tight abutting state.

[0026] In one possible implementation of the first aspect, the mounting base is provided with a guide structure, which is used to guide the second auxiliary probe when the first auxiliary probe docks with the second auxiliary probe.

[0027] In one possible implementation of the first aspect, the battery testing equipment further includes a positioning component, the positioning component comprising:

[0028] The support plate is used to support the pallet;

[0029] Guide plates are disposed on opposite sides of the support plate, and the distance between the guide plates on opposite sides gradually increases in a direction perpendicular to the plate surface of the support plate and away from the support plate.

[0030] A guide drive is provided for driving the support plate to move closer to or away from the pallet. The guide plate is used to guide the pallet when the support plate moves closer to the pallet, so that the pallet is supported by the support plate and located at the test station.

[0031] The support plate is provided with positioning protrusions, which are used to insert into positioning holes on the pallet when the pallet is supported on the support plate.

[0032] Compared with related technologies, this application has at least the following beneficial effects:

[0033] In this application, the positive and negative current lines are twisted-pair shielded wires, meaning they are twisted together and both are wrapped with a shielding layer. Therefore, on the one hand, the twisted pair arrangement allows the electromagnetic fields generated by the two wires to cancel each other out, significantly reducing electromagnetic coupling interference between the wires. Simultaneously, the shielding layers collectively isolate electromagnetic radiation from the external environment, preventing interference signals from entering the current loop; thus enhancing anti-interference capability. On the other hand, the twisted pair arrangement allows the positive and negative current lines to be closer together, thereby reducing the loop area of ​​the current loop and further enhancing anti-interference capability.

[0034] Furthermore, since the second auxiliary probe assembly and the negative electrode probe assembly are located on the same side of the battery under test, the positive electrode current line does not need to cross directly from the negative electrode side to the positive electrode side. Instead, it can be connected to the current source on the same side of the battery under test through the connection between the first and second auxiliary probes. This significantly shortens the routing distance of the positive electrode current line outside the battery under test, further reducing the loop area of ​​the current circuit and thus enhancing anti-interference capabilities. On the other hand, it eliminates the need to strip the shielding layer to allow the positive electrode current line to cross directly from the negative electrode side to the positive electrode side, thereby reducing the length of the unshielded cable. This reduces the impact of eddy currents generated when high-frequency (1kHz / 100mA) current passes through metal on test stability, further enhancing anti-interference capabilities.

[0035] As can be seen from the above description, by setting the positive and negative current lines as twisted-pair shielded wires and placing the second auxiliary probe assembly and the negative probe assembly on the same side of the battery under test, the anti-interference ability can be enhanced. Therefore, this application can significantly enhance the anti-interference ability of the test equipment, thereby significantly improving the test accuracy of the test equipment and effectively meeting the user's needs.

[0036] Furthermore, since this application can use the first and second auxiliary probes with electrical connections as current loops, there is no need to use the battery casing or the battery itself as a current loop. This means that, on the one hand, when the positive and negative terminals of the battery under test are reversed, it is not necessary to connect the positive terminal of the battery under test to the negative terminal of the battery serving as the current loop, nor is it necessary to connect the negative terminal of the battery under test to the positive terminal of the battery serving as the current loop. This avoids the risk of short circuits, fires, or wire burns, thus ensuring that reversed battery testing is risk-free. On the other hand, testing can be performed even with an incomplete reel of batteries. Moreover, since the testing equipment in this application has high testing accuracy, it also helps to improve the pass rate of incomplete reel testing. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A perspective view of the battery testing equipment provided in the embodiments of this application;

[0039] Figure 2 This is a wiring diagram of the battery testing equipment provided in an embodiment of this application;

[0040] Figure 3 for Figure 1 Enlarged view of section A;

[0041] Figure 4 A perspective view of the negative electrode probe assembly provided in an embodiment of this application;

[0042] Figure 5 A perspective view of the first auxiliary probe assembly provided in an embodiment of this application;

[0043] Figure 6 A perspective view of the second auxiliary probe assembly provided in the embodiments of this application;

[0044] Figure 7 for Figure 5 Enlarged view of section B;

[0045] Figure 8 This is a schematic diagram of the positioning component provided in an embodiment of this application.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1-Current source; 11-Positive current terminal; 12-Negative current terminal;

[0048] 2-Voltmeter; 21-Positive voltage terminal; 22-Negative voltage terminal;

[0049] 3-Positive probe assembly; 31-Positive probe;

[0050] 4-Negative electrode probe assembly; 41-Negative electrode probe;

[0051] 5-First auxiliary probe assembly; 51-First auxiliary probe; 52-Mounting base; 521-Guiding structure;

[0052] 6-Second auxiliary probe assembly; 61-Second auxiliary probe;

[0053] 7-Battery to be tested; 8-Negative current line; 9-Positive current line; 10-Metal part; 20-Positive voltage line; 30-Negative voltage line; 40-Frame; 50-Conveying mechanism; 60-First driving component; 70-Second driving component; 80-Positioning assembly; 801-Carrier plate; 802-Guide plate; 803-Guide driving component; 804-Positioning protrusion. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0056] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0057] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0058] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0059] As described in the background section of this application, alternating current internal resistance (ACIR) is one of the key parameters for evaluating battery performance. It not only reflects the battery's conductivity and electrode reaction kinetics, but is also closely related to the battery's cycle life, charge / discharge efficiency, and safety. Therefore, conducting accurate ACIR testing on batteries using battery testing equipment is a crucial step in ensuring battery quality and optimizing battery design.

[0060] However, in related technologies, for batteries with opposite tabs such as long blade batteries, short blade batteries, cylindrical batteries, and pouch batteries, the ACIR testing accuracy of battery testing equipment is usually low and cannot meet the user's needs.

[0061] In view of the above-mentioned problems, this application provides a battery testing device to solve the problem of low ACIR testing accuracy in battery testing devices in the related art.

[0062] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings:

[0063] like Figure 1 and Figure 2 As shown, the battery testing equipment includes a current source 1, a voltmeter 2, a positive electrode probe assembly 3, a negative electrode probe assembly 4, a first auxiliary probe assembly 5, and a second auxiliary probe assembly 6. Among them, as... Figure 2 As shown, current source 1 has a positive current terminal 11 and a negative current terminal 12, and voltmeter 2 has a positive voltage terminal 21 and a negative voltage terminal 22.

[0064] like Figure 2 and Figure 3 As shown, the positive electrode probe assembly 3 includes a positive electrode probe 31, which is used to electrically connect to the positive electrode of the battery 7 under test and to the positive electrode voltage terminal 21. Figure 2 and Figure 4 As shown, the negative electrode probe assembly 4 includes a negative electrode probe 41, which is used to electrically connect to the negative electrode of the battery 7 to be tested. The negative electrode probe 41 is electrically connected to the negative electrode voltage terminal 22 and is electrically connected to the negative electrode current terminal 12 through the negative electrode current line 8.

[0065] like Figure 2 and Figure 5 As shown, the first auxiliary probe assembly 5 includes a first auxiliary probe 51, which is electrically connected to the positive electrode probe 31. The second auxiliary probe assembly 6 and the negative electrode probe assembly 4 are configured to be positioned on the same side of the battery 7 under test, as shown. Figure 2 and Figure 6As shown, the second auxiliary probe assembly 6 includes a second auxiliary probe 61, which is electrically connected to the first auxiliary probe 51 and is electrically connected to the positive current terminal 11 through a positive current line 9. The positive current line 9 and the negative current line 8 are twisted-pair shielded wires.

[0066] With this setup, when performing ACIR testing, such as Figure 2 As shown, the AC current output from current source 1 flows to the battery under test 7 via positive current line 9, second auxiliary probe 61, first auxiliary probe 51, and positive probe 31, and can then flow back to current source 1 via negative probe 41 and negative current line 8. At the same time, the positive voltage terminal 21 and negative voltage terminal 22 of voltmeter 2 can be electrically connected to the positive and negative terminals of the battery under test 7 via positive probe 31 and negative probe 41, respectively. This allows voltmeter 2 to collect the voltage signal of the battery under test 7, and the AC internal resistance, i.e., ACIR, can be calculated from the voltage measured by voltmeter 2 and the current output by current source 1.

[0067] Because the positive current line 9 and the negative current line 8 are twisted-pair shielded wires (i.e., the positive current line 9 and the negative current line 8 are twisted together, and both are wrapped with a shielding layer), on the one hand, the electromagnetic fields generated by the two lines can cancel each other out through the twisting arrangement, significantly reducing electromagnetic coupling interference between the lines. At the same time, the shielding layer can jointly isolate electromagnetic radiation from the external environment, preventing interference signals from entering the current loop; thus, it can enhance anti-interference capability. On the other hand, because the twisting arrangement allows the positive current line 9 and the negative current line 8 to be closer together, it can reduce the loop area of ​​the current loop, thereby also enhancing anti-interference capability.

[0068] Furthermore, since the second auxiliary probe assembly 6 and the negative electrode probe assembly 4 are located on the same side of the battery under test 7, the positive electrode current line 9 does not need to cross directly from the negative electrode side to the positive electrode side of the battery under test 7. Instead, it can be connected to the current source 1 on the same side of the battery under test 7 through the connection of the first auxiliary probe 51 and the second auxiliary probe 61. In this way, the detour distance of the positive electrode current line 9 outside the battery under test 7 can be significantly shortened, the loop area of ​​the current loop can be further reduced, and thus the anti-interference ability can be further enhanced. On the other hand, it is not necessary to strip the shielding layer so that the positive electrode current line 9 crosses directly from the negative electrode side to the positive electrode side of the battery under test 7. This can also reduce the length of the unshielded cable, thereby reducing the impact of eddy currents generated when high-frequency (1KHZ\100mA) current passes through metal on the test stability, which can also enhance the anti-interference ability.

[0069] As can be seen from the above description, by setting the positive current line 9 and the negative current line 8 as twisted-pair shielded wires, and by setting the second auxiliary probe assembly 6 and the negative probe assembly 4 on the same side of the battery under test 7, the anti-interference ability can be enhanced. Therefore, this application can significantly enhance the anti-interference ability of the test equipment, thereby significantly improving the test accuracy of the test equipment and effectively meeting the user's needs.

[0070] Furthermore, since this application can use the first auxiliary probe 51 and the second auxiliary probe 61, which are electrically connected, as a current loop, there is no need to use the battery casing or the battery itself as a current loop. This means that, on the one hand, when the positive and negative terminals of the battery under test 7 are reversed, it is not necessary to electrically connect the positive terminal of the battery under test 7 to the negative terminal of the battery serving as the current loop, nor is it necessary to electrically connect the negative terminal of the battery under test 7 to the positive terminal of the battery serving as the current loop. This avoids the risk of short circuits, fires, or wire burns, thus ensuring that reversed battery testing is risk-free. On the other hand, testing can be performed even when the battery under test 7 is not fully reeled. Moreover, since the testing equipment in this application has high testing accuracy, it also helps to improve the pass rate of incomplete reel testing.

[0071] In some alternative embodiments, such as Figure 2 As shown, the positive probe 31 and the first auxiliary probe 51 are electrically connected through a metal part 10.

[0072] This configuration, through the metal part 10, not only facilitates the electrical connection between the positive probe 31 and the first auxiliary probe 51, but also ensures that a low-resistance, high-stability conductive path is formed between the positive probe 31 and the first auxiliary probe 51, reducing contact resistance and signal transmission loss, so that the current can be stably transmitted from the first auxiliary probe 51 to the positive probe 31. At the same time, this direct and reliable electrical connection method helps to maintain the accuracy of the current signal during the test, which in turn helps to further improve the stability and accuracy of ACIR testing.

[0073] In this embodiment, the metal component 10 can be a metal rod, metal plate, or similar material that is not easily deformed. This design helps to avoid the metal component 10 affecting the loop area of ​​the current circuit, thereby reducing the impact of the metal component 10 on the test accuracy.

[0074] In other embodiments, the positive probe 31 can directly contact the first auxiliary probe 51 to achieve electrical connection.

[0075] With this configuration, there is no need for a metal part 10 to connect the positive probe 31 and the first auxiliary probe 51, which facilitates the connection between the positive probe 31 and the first auxiliary probe 51 and also helps to reduce costs.

[0076] In some alternative embodiments, such as Figure 2 As shown, the positive probe 31 and the positive voltage terminal 21 are electrically connected through the positive voltage line 20, and the outer side of the positive voltage line 20 from one end to the other is covered with a shielding layer.

[0077] This setup allows the positive voltage line 20 to run on a separate shielded line. The shielding layer effectively isolates the influence of external electromagnetic interference on the voltage signal transmission, preventing interference signals from mixing into the real voltage signal. This ensures that the battery voltage signal collected by the voltmeter 2 is purer and more accurate, reducing ACIR test errors caused by signal distortion and further improving test accuracy.

[0078] In some alternative embodiments, such as Figure 2 As shown, the negative probe 41 and the negative voltage terminal 22 are electrically connected through the negative voltage line 30, and the outer side of the negative voltage line 30 from one end to the other is wrapped with a shielding layer.

[0079] This setup allows the negative voltage line 30 to run on a separate shielded line. The shielding layer effectively isolates the influence of external electromagnetic interference on the voltage signal transmission, preventing interference signals from mixing into the real voltage signal. This ensures that the battery voltage signal collected by the voltmeter 2 is purer and more accurate, reducing ACIR test errors caused by signal distortion and further improving test accuracy.

[0080] In some alternative embodiments, such as Figure 2 As shown, the positive probe 31 and the positive voltage terminal 21 are electrically connected via a positive voltage line 20, and the outer sides of the positive voltage line 20 from one end to the other are covered with a shielding layer. Furthermore, as... Figure 2 As shown, the negative probe 41 and the negative voltage terminal 22 are electrically connected through the negative voltage line 30, and the outer side of the negative voltage line 30 from one end to the other is wrapped with a shielding layer.

[0081] This configuration allows the positive voltage line 20 and the negative voltage line 30 to each have their own shielded lines. Furthermore, the shielding layers on the outside of both lines effectively isolate the influence of external electromagnetic interference on the voltage signal transmission, and more effectively prevent interference signals from mixing into the real voltage signal. This further ensures that the battery voltage signal collected by the voltmeter 2 is purer and more accurate, further reduces ACIR test errors caused by signal distortion, and further improves test accuracy.

[0082] In other embodiments, the positive voltage line 20 and the negative voltage line 30 may also be twisted-pair shielded wires.

[0083] This setup allows the electromagnetic fields generated by the two wires to cancel each other out through the twisted pair structure, significantly reducing electromagnetic coupling interference between the wires. At the same time, the shielding layers can jointly isolate electromagnetic radiation from the external environment, preventing interference signals from entering the voltage measurement circuit. This ensures that the positive and negative voltage signals collected by voltmeter 2 are more accurate and stable, reducing ACIR test errors caused by signal interference and further improving test accuracy.

[0084] In some optional embodiments, the second auxiliary probe assembly 6 and the negative electrode probe assembly 4 are used to be disposed on the negative electrode side of the battery 7 to be tested, and the first auxiliary probe assembly 5 and the positive electrode probe assembly 3 are used to be disposed on the positive electrode side of the battery 7 to be tested.

[0085] This setup allows the current path and voltage acquisition path to form a symmetrical and concentrated layout on both sides of the battery under test 7, avoiding interference caused by the cross-tangle of the lines. At the same time, it makes the current transmission and voltage measurement paths more closely match the actual distribution of the positive and negative electrodes of the battery under test 7, reducing signal loss and errors caused by the dispersed lines, and further improving the stability and accuracy of ACIR testing.

[0086] In other embodiments, for the space between the positive and negative electrodes of the battery 7 under test, at least the first auxiliary probe assembly 5 can be disposed in the middle, or close to one of the positive and negative electrodes of the battery 7 under test. The arrangement relationship between the probe assemblies and the battery 7 under test is relatively flexible, and can be set according to actual needs. This application embodiment does not impose specific limitations on this.

[0087] Furthermore, in some optional embodiments, the second auxiliary probe assembly 6 and the negative electrode probe assembly 4 are disposed on one side of the battery under test 7 in the vertical direction, and the first auxiliary probe assembly 5 and the positive electrode probe assembly 3 are disposed on the other side of the battery under test 7 in the vertical direction.

[0088] Since the battery under test 7 is usually transported to the test equipment in a horizontal direction, this arrangement helps to avoid interference between the probe components during the horizontal transport of the battery under test 7, and thus facilitates the horizontal transport of the battery under test 7 to the test equipment.

[0089] In other embodiments, the second auxiliary probe assembly 6 and the negative electrode probe assembly 4 may be disposed on one side of the battery under test 7 in the horizontal direction, and the first auxiliary probe assembly 5 and the positive electrode probe assembly 3 may be disposed on the other side of the battery under test 7 in the horizontal direction.

[0090] When the battery to be tested 7 needs to be transported vertically to the test equipment, this setting helps to avoid interference between the probe components and the vertical transport of the battery to be tested 7, thereby facilitating the transport of the battery to be tested 7 to the test equipment in a vertical direction.

[0091] Furthermore, in some alternative embodiments, such as Figure 1 As shown, the battery testing setup also includes a frame 40 and a conveying mechanism 50. The conveying mechanism 50 is located on the frame 40 and is used to convey a tray to the testing station so that the battery 7 to be tested on the tray can be electrically connected to the positive electrode probe 31 and the negative electrode probe 41.

[0092] Before the pallet is conveyed to the test station, in a direction perpendicular to the conveying direction of the conveying mechanism (e.g., ... Figure 1 In the Z direction, the second auxiliary probe assembly 6 and the negative probe assembly 4 are disposed on one side of the conveying mechanism 50, and the first auxiliary probe assembly 5 and the positive probe assembly 3 are disposed on the other side of the conveying mechanism 50.

[0093] This setup allows the battery 7 to be tested to be conveniently transported to the testing station via the conveying mechanism 50.

[0094] On the other hand, before the tray is transported to the test station, by setting each probe assembly on both sides of the conveying mechanism 50 in a direction perpendicular to the conveying direction of the conveying mechanism 50, interference between each probe assembly and the operating conveying mechanism 50 can be avoided, thereby ensuring that the conveying mechanism 50 can transport the battery 7 to be tested normally.

[0095] Regarding the conveying mechanism 50, in this embodiment of the application, the conveying mechanism 50 can be a chain conveying mechanism or a conveyor belt conveying mechanism, etc. The structure of the conveying mechanism 50 is relatively flexible. Specifically, it can be set according to actual needs. This embodiment of the application does not make specific limitations in this regard.

[0096] In other embodiments, the tray carrying the battery 7 to be tested can also be manually placed to the testing station. In this case, the conveying mechanism 50 is not required. This simplifies the structural composition of the testing equipment, facilitates its processing and manufacturing, and helps reduce manufacturing costs.

[0097] In some alternative embodiments, the first auxiliary probe assembly 5 is movably disposed on the frame 40, such as... Figure 5 As shown, the battery testing equipment also includes a first driving member 60, which is used to drive the first auxiliary probe assembly 5 to move closer to or away from the second auxiliary probe assembly 6, so that the first auxiliary probe 51 is in contact with the second auxiliary probe 61 when it is close to the second auxiliary probe 61.

[0098] This configuration allows for flexible control of the docking or separation of the first auxiliary probe 51 and the second auxiliary probe 61 through the movable design of the first auxiliary probe assembly 5 and the driving of the first driving component 60. This facilitates precise docking of the two probes after the battery 7 to be tested is transported to the testing station from the tray, forming a complete current path and ensuring smooth testing. At the same time, when the test is completed or the battery 7 to be tested is replaced, the two probes can be driven to separate, providing operational space for the placement and removal of the battery 7 to be tested, thus improving the convenience of equipment use and the smoothness of the testing process.

[0099] On the other hand, the electrical connection between the first auxiliary probe 51 and the second auxiliary probe 61 is achieved by docking. In this way, during the test, it is only necessary to drive the two to accurately dock to form a stable conductive contact, without the need for complex circuit pre-connection, which helps to simplify the circuit setup.

[0100] In some alternative embodiments, the second auxiliary probe assembly 6 is movably disposed on the frame 40, such as... Figure 6 As shown, the battery testing equipment also includes a second driving member 70, which is used to drive the second auxiliary probe assembly 6 to move closer to or away from the first auxiliary probe assembly 5, so that the second auxiliary probe 61 is in contact with the first auxiliary probe 51 when it is close to the first auxiliary probe 51.

[0101] This configuration allows for flexible control of the docking or separation of the first auxiliary probe 51 and the second auxiliary probe 61 through the movable design of the second auxiliary probe assembly 6 and the driving of the second driving component 70. This facilitates precise docking of the two probes after the battery 7 to be tested is transported to the testing station from the tray, forming a complete current path and ensuring smooth testing. At the same time, when the test is completed or the battery 7 to be tested is replaced, the two probes can be driven to separate, providing operational space for the placement and removal of the battery 7 to be tested, thus improving the convenience of equipment use and the smoothness of the testing process.

[0102] On the other hand, the electrical connection between the first auxiliary probe 51 and the second auxiliary probe 61 is achieved by docking. In this way, during the test, it is only necessary to drive the two to accurately dock to form a stable conductive contact, without the need for complex circuit pre-connection, which helps to simplify the circuit setup.

[0103] In some alternative embodiments, the first auxiliary probe assembly 5 is movably disposed on the frame 40, such as... Figure 5 As shown, the battery testing equipment also includes a first driving member 60, which is used to drive the first auxiliary probe assembly 5 to move closer to or away from the second auxiliary probe assembly 6, so that the first auxiliary probe 51 is in contact with the second auxiliary probe 61 when it is close to the second auxiliary probe 61.

[0104] Furthermore, the second auxiliary probe assembly 6 can also be movably mounted on the frame 40, such as... Figure 6As shown, the battery testing equipment also includes a second driving member 70, which is used to drive the second auxiliary probe assembly 6 to move closer to or away from the first auxiliary probe assembly 5, so that the second auxiliary probe 61 is in contact with the first auxiliary probe 51 when it is close to the first auxiliary probe 51.

[0105] With this configuration, the movable arrangement of the first auxiliary probe assembly 5 and the second auxiliary probe assembly 6, along with the driving of the first driving member 60 and the second driving member 70, can improve the docking and separation effect of the first auxiliary probe 51 and the second auxiliary probe 61, thereby improving the efficiency of the test.

[0106] In other embodiments, the first auxiliary probe 51 and the second auxiliary probe 61 can also be electrically connected by a conductor that is not easily deformable. In this case, the first auxiliary probe assembly 5 and the second auxiliary probe assembly 6 can be fixedly mounted on the frame 40, and the first drive member 60 and the second drive member 70 can be omitted.

[0107] This design simplifies the structure and composition of the testing equipment to some extent, which facilitates its manufacturing and reduces manufacturing costs.

[0108] Furthermore, in some alternative embodiments, such as Figure 5 As shown, the first auxiliary probe assembly 5 also includes a mounting base 52. An elastic element (not shown in the figure) is provided between the mounting base 52 and the first auxiliary probe 51. The elastic element is used to elastically deform when the first auxiliary probe 51 and the second auxiliary probe 61 are mated, so that the first auxiliary probe 51 and the second auxiliary probe 61 are in a tight abutting state.

[0109] This configuration ensures that the first auxiliary probe 51 and the second auxiliary probe 61 are in a tight abutting state through the elastic element. This guarantees the stability and reliability of the electrical connection between the first auxiliary probe 51 and the second auxiliary probe 61, reduces current transmission fluctuations caused by poor contact, and further improves test accuracy.

[0110] On the other hand, when the first auxiliary probe 51 and the second auxiliary probe 61 are docked, the elastic deformation of the elastic element can buffer the docking impact force, avoid rigid contact that could cause probe wear or deformation, and help extend the service life of the probe.

[0111] Furthermore, in some alternative embodiments, such as Figure 7 As shown, the mounting base 52 is provided with a guide structure 521, which is used to guide the second auxiliary probe 61 when the first auxiliary probe 51 docks with the second auxiliary probe 61.

[0112] This configuration, guided by the guide structure 521, can effectively correct any positional deviations that may occur during the docking process, ensuring that the probes dock stably in the correct posture. This avoids poor contact or probe damage caused by misalignment, further improving docking efficiency and electrical connection reliability, ensuring stable current transmission, and providing support for high-precision ACIR testing.

[0113] In this embodiment, the guide structure 521 can be a guide hole or a guide groove, etc. The specific structure of the guide structure 521 is flexible and can be set according to actual needs. This embodiment does not limit it in this respect.

[0114] In some alternative embodiments, such as Figure 8 As shown, the battery testing equipment also includes a positioning component 80, which includes a support plate 801, a guide plate 802, and a guide drive component 803. The support plate 801 is used to support the tray, and the guide plates 802 are disposed on opposite sides of the support plate 801, in a direction perpendicular to the surface of the support plate 801 and away from the support plate 801 (e.g., ...). Figure 8 In the Z direction, the distance between the guide plates 802 on both sides gradually increases.

[0115] The guide drive 803 is used to drive the support plate 801 to move closer to or away from the pallet, and the guide plate 802 is used to guide the pallet when the support plate 801 moves closer to the pallet, so that the pallet is supported on the support plate 801 and located at the test station.

[0116] The support plate 801 is provided with a positioning protrusion 804, which is used to insert into the positioning hole on the pallet when the pallet is supported on the support plate 801.

[0117] With this configuration, on the one hand, the guide plate 802 can guide the pallet smoothly when the support plate 801 approaches the pallet, so that even if the initial position of the pallet is slightly off, it can be accurately introduced into the support plate 801.

[0118] On the other hand, the positioning protrusion 804 on the carrier plate 801 is inserted into the positioning hole on the tray, which can stably position the tray at the test station, ensuring that the battery to be tested 7 on the tray is accurately aligned with the positive electrode probe 31 and the negative electrode probe 41, avoiding poor probe contact or test errors caused by tray displacement, and significantly improving the accuracy of the test.

[0119] In this embodiment, the first driving member 60, the second driving member 70, and the guide driving member 803 can all be one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. The type of each driving member is flexible and can be selected according to actual needs. This embodiment does not impose any specific limitations on this.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery testing device, characterized in that, include: The current source (1) has a positive current terminal (11) and a negative current terminal (12); A voltmeter (2) has a positive voltage terminal (21) and a negative voltage terminal (22); The positive electrode probe assembly (3) includes a positive electrode probe (31), which is used to electrically connect to the positive electrode of the battery to be tested (7) and to the positive electrode voltage terminal (21); The negative electrode probe assembly (4) includes a negative electrode probe (41), which is used to electrically connect to the negative electrode of the battery to be tested (7). The negative electrode probe (41) is electrically connected to the negative electrode voltage terminal (22) and is electrically connected to the negative electrode current terminal (12) through a negative electrode current line (8). The first auxiliary probe assembly (5) includes a first auxiliary probe (51), which is electrically connected to the positive probe (31). The second auxiliary probe assembly (6) and the negative probe assembly (4) are disposed on the same side of the battery to be tested (7). The second auxiliary probe assembly (6) includes a second auxiliary probe (61), which is electrically connected to the first auxiliary probe (51) and electrically connected to the positive current terminal (11) through a positive current line (9). The positive current line (9) and the negative current line (8) are twisted-pair shielded wires.

2. The battery testing equipment according to claim 1, characterized in that, The second auxiliary probe assembly (6) and the negative electrode probe assembly (4) are used to be disposed on the negative electrode side of the battery to be tested (7); The first auxiliary probe assembly (5) and the positive electrode probe assembly (3) are used to be disposed on the positive electrode side of the battery to be tested (7).

3. The battery testing equipment according to claim 2, characterized in that, The second auxiliary probe assembly (6) and the negative electrode probe assembly (4) are disposed on one side of the battery under test (7) in the vertical direction, and the first auxiliary probe assembly (5) and the positive electrode probe assembly (3) are disposed on the other side of the battery under test (7) in the vertical direction.

4. The battery testing equipment according to any one of claims 1-3, characterized in that, The positive probe (31) and the first auxiliary probe (51) are electrically connected by a metal part (10).

5. The battery testing equipment according to any one of claims 1-3, characterized in that, The positive probe (31) and the positive voltage terminal (21) are electrically connected via a positive voltage line (20), and the outer side of the positive voltage line (20) from one end to the other is wrapped with a shielding layer; and / or, The negative probe (41) and the negative voltage terminal (22) are electrically connected by a negative voltage line (30), and the outer side of the negative voltage line (30) from one end to the other end is wrapped with a shielding layer.

6. The battery testing equipment according to claim 2 or 3, characterized in that, The battery testing equipment also includes: Rack (40); A conveying mechanism (50) is provided on the frame (40) and is used to convey a tray to the test station so that the battery to be tested (7) on the tray can be electrically connected to the positive electrode probe (31) and the negative electrode probe (41). Before the tray is transported to the test station, in a direction perpendicular to the transport direction of the transport mechanism (50), the second auxiliary probe assembly (6) and the negative electrode probe assembly (4) are disposed on one side of the transport mechanism (50), and the first auxiliary probe assembly (5) and the positive electrode probe assembly (3) are disposed on the other side of the transport mechanism (50).

7. The battery testing equipment according to claim 6, characterized in that, The first auxiliary probe assembly (5) is movably disposed on the frame (40); the battery testing equipment further includes a first drive member (60), which is used to drive the first auxiliary probe assembly (5) to move closer to or away from the second auxiliary probe assembly (6), so that the first auxiliary probe (51) is in contact with the second auxiliary probe (61) when it is close to the second auxiliary probe (61); and / or, The second auxiliary probe assembly (6) is movably disposed on the frame (40); the battery testing equipment further includes a second drive (70), which is used to drive the second auxiliary probe assembly (6) to move closer to or away from the first auxiliary probe assembly (5) so that the second auxiliary probe (61) is in contact with the first auxiliary probe (51) when it is close to the first auxiliary probe (51).

8. The battery testing equipment according to claim 7, characterized in that, The first auxiliary probe assembly (5) further includes: Mounting base (52), wherein an elastic element is provided between the mounting base (52) and the first auxiliary probe (51), the elastic element being used to elastically deform when the first auxiliary probe (51) and the second auxiliary probe (61) are docked, so that the first auxiliary probe (51) and the second auxiliary probe (61) are in a tight abutment state.

9. The battery testing equipment according to claim 8, characterized in that, The mounting base (52) is provided with a guide structure (521), which is used to guide the second auxiliary probe (61) when the first auxiliary probe (51) docks with the second auxiliary probe (61).

10. The battery testing equipment according to claim 6, characterized in that, The battery testing equipment further includes a positioning component (80), which comprises: A support plate (801) for supporting the pallet; Guide plates (802) are disposed on opposite sides of the support plate (801). In a direction perpendicular to the plate surface of the support plate (801) and away from the support plate (801), the distance between the guide plates (802) on opposite sides gradually increases. A guide drive (803) is used to drive the support plate (801) to move closer to or away from the pallet. The guide plate (802) is used to guide the pallet when the support plate (801) moves closer to the pallet, so that the pallet is supported by the support plate (801) and located at the test station. The support plate (801) is provided with a positioning protrusion (804), which is used to insert into the positioning hole on the pallet when the pallet is supported on the support plate (801).

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