Battery cell point inspection device

Abstract

The utility model relates to the technical field of lithium ion batteries, and discloses a cell point inspection device. The cell point inspection device comprises an HI-POT tester, the HI-POT tester is electrically connected with a point inspection circuit through an electric control switch, and the electric control switch is electrically connected with a PLC used for controlling the point inspection circuit to be connected or disconnected. And the HI-POT tester is also electrically connected with an alarm, and the alarm can send out an alarm signal when point inspection NG occurs in the battery cell or when the point inspection circuit is closed but the HI-POT tester does not carry out point inspection operation. According to the utility model, the function of automatically controlling and carrying out spot inspection operation is realized, the test efficiency is improved, and the safety operation risk is also avoided; moreover, in the HI-POT test process, once an abnormity occurs, the alarm apparatus sends out an alarm signal, so that the manpower is greatly saved, and the production line OEE is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery technology, and in particular to a cell inspection device. Background Technology

[0002] HI-POT (High Potential Test) is a high-voltage test method used to inspect the insulation of electrical appliances, also known as a withstand voltage test. Its main purpose is to test the insulation performance of the equipment under test by applying high voltage to ensure that the equipment will not leak current or break down under normal operating conditions, thus guaranteeing the safety and reliability of the equipment.

[0003] Currently, in the application of HI-POT in the lithium battery winding process, inspection personnel manually insert the HI-POT probe into the HI-POT tester for spot checks. Each HI-POT tester requires approximately 5 minutes of downtime per shift, which is inefficient. Moreover, this method, which uses an external HI-POT probe that is moved and plugged in, makes the probe prone to damage. Furthermore, the current HI-POT testing process requires inspection personnel to constantly monitor the tester to sort out NG products, which is very labor-intensive. In addition, there are also safety risks for inspection personnel during HI-POT testing, such as incorrect wiring or electric shock.

[0004] In summary, there is an urgent need in this field for an inspection device that can automate production line inspections to improve overall equipment efficiency (OEE) and mitigate operational risks for employees.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] The purpose of this invention is to provide a battery cell inspection device to solve or at least partially solve the technical problems existing in the prior art.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This utility model provides a battery cell inspection device, including a HI-POT tester. The HI-POT tester is electrically connected to an inspection circuit via an electronic control switch. The electronic control switch is electrically connected to a PLC for controlling the on / off state of the inspection circuit.

[0009] The HI-POT tester is also electrically connected to an alarm, which can issue an alarm signal when the battery cell fails the inspection or when the inspection circuit is closed but the HI-POT tester does not perform the inspection operation.

[0010] Optionally, the inspection line includes two pairs of connection terminals, each pair of connection terminals including a HI-POT test probe for electrically connecting to the HI-POT tester and a test terminal for electrically connecting to the battery cell.

[0011] Wires are connected between the HI-POT test probe and the HI-POT tester, as well as between the terminal under test and the battery cell;

[0012] One pair of connection terminals is located between the positive terminal of the HI-POT tester and the positive terminal of the battery cell, while the other pair of connection terminals is located between the negative terminal of the HI-POT tester and the negative terminal of the battery cell.

[0013] Optionally, the electronically controlled switch is located between the other pair of connection terminals and the HI-POT tester.

[0014] Optionally, the HI-POT tester is electrically connected to a host computer for storing inspection results, and the host computer can automatically control the HI-POT tester to perform inspection operations according to set conditions;

[0015] The set conditions include the time for the HI-POT tester to perform and / or finish its inspection operations.

[0016] Optionally, the host computer is also electrically connected to a driving component, which drives a conductive pressure block; the pressure block is used to press and connect the corresponding HI-POT test probe to the terminal under test.

[0017] Optionally, the host computer is electrically connected to the PLC and is used to set the control conditions of the PLC;

[0018] The control conditions include controlling the time for the inspection line to be turned on / off.

[0019] Optionally, the host computer is electrically connected to the alarm.

[0020] When the inspection line is closed but the HI-POT tester does not perform inspection operations, the host computer notifies the alarm to issue an alarm signal, and at the same time, a pop-up window or alarm signal appears on the host computer's display interface to remind the user of the test abnormality.

[0021] Optionally, the electronically controlled switch is a relay.

[0022] Optionally, the cell is a bare cell of a lithium-ion battery.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention achieves automated inspection by installing an electrical control switch between the inspection line and the HI-POT tester, and automatically controlling the switch's on / off state via a PLC. This eliminates the need for users to manually insert the HI-POT probe into the HI-POT tester, improving testing efficiency and mitigating safety risks. Furthermore, during HI-POT testing, an alarm will sound immediately if an abnormality occurs, eliminating the need for personnel to constantly monitor the tester to sort out NG products, significantly saving manpower and improving the production line's OEE.

[0025] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a battery cell inspection device provided in an embodiment of this utility model.

[0028] In the diagram: 10, HI-POT tester; 11, HI-POT test probe; 20, battery cell; 21, terminal under test; 30, electrical control switch; 40, PLC; 50, alarm; 60, host computer; 70, pressure block. Detailed Implementation

[0029] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0030] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0031] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0032] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0033] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0034] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0035] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0036] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0037] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0038] Example 1:

[0039] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a battery cell inspection device provided in an embodiment of this utility model.

[0040] like Figure 1 As shown, the inspection device includes a HI-POT tester 10, which is electrically connected to the inspection circuit via an electric control switch 30. The electric control switch 30 is electrically connected to a PLC (programmable logic controller) 40 for controlling the on / off state of the inspection circuit.

[0041] The HI-POT tester 10 is also electrically connected to an alarm 50, which can issue an alarm signal when the battery cell 20 fails the inspection or when the inspection circuit is closed but the HI-POT tester 10 does not perform the inspection operation.

[0042] It should be noted that the HI-POT tester 10 is a conventional testing instrument for spot inspection, and its structure and working principle are existing technologies. Therefore, its structure and working principle will not be described in detail in this embodiment.

[0043] This embodiment achieves automatic control of the inspection operation by setting an electric control switch 30 between the inspection line and the HI-POT tester 10, and automatically controlling the on / off state of the electric control switch 30 through a PLC 40. This eliminates the need for users to manually insert the HI-POT probe into the HI-POT tester 10, thus improving testing efficiency. Furthermore, during the HI-POT test, if an abnormality occurs, the alarm 50 will immediately issue an alarm signal, so the inspection personnel no longer need to constantly monitor the tester to sort out NG (nogood) products, greatly saving manpower and improving the OEE of the production line.

[0044] Specifically, the inspection line includes two pairs of connection terminals. Each pair of connection terminals includes a HI-POT test probe 11 for electrical connection to the HI-POT tester 10 and a test terminal 21 for electrical connection to the battery cell 20.

[0045] There are wires connecting the HI-POT test probe 11 and the HI-POT tester 10, as well as between the terminal under test 21 and the cell 20;

[0046] One pair of connection terminals is located between the positive terminal of the HI-POT tester 10 and the positive terminal of the battery cell 20, while the other pair of connection terminals is located between the negative terminal of the HI-POT tester 10 and the negative terminal of the battery cell 20.

[0047] The test probe of the HI-POT tester 10 is led out through a wire to form this... Figure 1 The HI-POT test probe 11 shown can be used to lead out the test terminal 21 from the positive / negative pole of the cell 20 through a wire. The point inspection can be achieved by making electrical contact between the two terminals, which saves the user from plugging and connecting the terminals and avoids the risk of safety operation.

[0048] As an optional implementation, the electronic control switch 30 is located between another pair of connection terminals and the HI-POT tester 10, i.e., on the negative side of the battery cell.

[0049] Specifically, the HI-POT tester 10 is electrically connected to a host computer 60 for storing inspection results, and the host computer 60 can automatically control the HI-POT tester 10 to carry out inspection operations according to the set conditions.

[0050] The set conditions include the time for the HI-POT tester 10 to start and / or finish the inspection operation.

[0051] In this embodiment, the inspection results of the HI-POT tester 10 are directly uploaded to the host computer 60 for storage, so that the inspection results can be checked and retrieved at any time. This data can also be used to trace the links where NG products have problems in subsequent processes.

[0052] Specifically, the host computer 60 is also electrically connected to a driving component (not shown in the figure), which drives a conductive pressure block 70; the pressure block 70 is used to press and connect the corresponding HI-POT test probe 11 to the terminal under test 21.

[0053] It should be noted that, Figure 1 This is for the purpose of easily demonstrating the connection terminals, therefore Figure 1 Only one pressure block 70 is shown in the figure. In this embodiment, both pairs of connecting terminals are crimped by a pressure block 70. For example, when the battery cell 20 is transmitted to the predetermined inspection position, the host computer 60 sends a control signal to the drive unit, which drives the pressure block 70 to crimp and connect the corresponding HI-POT test probe 11 to the terminal under test 21 to perform the inspection operation. No manual operation or intervention is required, and the whole process is automated, which can greatly improve the detection efficiency.

[0054] Specifically, the host computer 60 is electrically connected to the PLC40 and is used to set the control conditions of the PLC40;

[0055] The control conditions include the time for the control point inspection line to be connected / disconnected.

[0056] Specifically, the host computer 60 is electrically connected to the alarm 50;

[0057] When the inspection line is closed but the HI-POT tester 10 does not perform inspection operations, the host computer 60 notifies the alarm 50 to issue an alarm signal, and at the same time, a pop-up window or alarm signal appears on the display interface of the host computer 60 to remind the user of the test abnormality.

[0058] It should be noted that when the HI-POT tester 10 or the inspection circuit malfunctions, although the electrical control switch 30 is closed, the inspection circuit still cannot work normally. Therefore, it is necessary to remind the user or staff to pay attention. Thus, this situation has been anticipated in this implementation. That is, when the inspection circuit is closed but the HI-POT tester 10 does not perform inspection work, the host computer 60 will promptly notify the alarm 50 to issue an alarm signal to remind the staff that an abnormality has occurred so that the staff can respond in a timely manner.

[0059] In this embodiment, as an optional implementation, the electronic switch 30 is a relay.

[0060] In this embodiment, cell 20 is a bare cell of a lithium-ion battery.

[0061] In summary, the inspection device provided in this embodiment can realize automatic inspection operations on the production line, improve the OEE of the production line, and avoid operational risks for employees.

[0062] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery cell inspection device, comprising a HI-POT tester (10), characterized in that, The HI-POT tester (10) is electrically connected to the inspection line via an electric control switch (30), and the electric control switch (30) is electrically connected to a PLC (40) for controlling the on / off state of the inspection line; The HI-POT tester (10) is also electrically connected to an alarm (50), which can issue an alarm signal when the battery cell (20) fails inspection or when the inspection line is closed but the HI-POT tester (10) does not perform inspection.

2. The battery cell inspection device according to claim 1, characterized in that, The inspection line includes two pairs of connection terminals. Each pair of connection terminals includes a HI-POT test probe (11) for electrically connecting to the HI-POT tester (10) and a test terminal (21) for electrically connecting to the battery cell (20). Wires are connected between the HI-POT test probe (11) and the HI-POT tester (10), as well as between the terminal under test (21) and the battery cell (20); One pair of connection terminals is located between the positive terminal of the HI-POT tester (10) and the positive terminal of the battery cell (20), while the other pair of connection terminals is located between the negative terminal of the HI-POT tester (10) and the negative terminal of the battery cell (20).

3. The battery cell inspection device according to claim 2, characterized in that, The electrical control switch (30) is located between the other pair of connection terminals and the HI-POT tester (10).

4. The battery cell inspection device according to claim 2, characterized in that, The HI-POT tester (10) is electrically connected to a host computer (60) for storing inspection results, and the host computer (60) can automatically control the HI-POT tester (10) to carry out inspection operations according to set conditions; The set conditions include the time for the HI-POT tester (10) to carry out and / or finish the inspection operation.

5. The battery cell inspection device according to claim 4, characterized in that, The host computer (60) is also electrically connected to a driving component, which drives a conductive pressure block (70); the pressure block (70) is used to press and connect the corresponding HI-POT test probe (11) to the terminal under test (21).

6. The battery cell inspection device according to claim 4, characterized in that, The host computer (60) is electrically connected to the PLC (40) and is used to set the control conditions of the PLC (40); The control conditions include controlling the time for the inspection line to be turned on / off.

7. The battery cell inspection device according to claim 4, characterized in that, The host computer (60) is electrically connected to the alarm (50); When the inspection line is closed but the HI-POT tester (10) does not perform inspection operations, the host computer (60) notifies the alarm (50) to issue an alarm signal, and at the same time, a pop-up window or alarm signal to remind the user of test abnormality appears on the display interface of the host computer (60).

8. The battery cell inspection device according to claim 1, characterized in that, The electronically controlled switch (30) is a relay.

9. A battery cell inspection device according to claim 1, characterized in that, The cell (20) is a bare cell of a lithium-ion battery.

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