Edge voltage testing device

Abstract

The application relates to the field of testing equipment, in particular to a side voltage testing device. The side voltage testing device comprises a control circuit; the control circuit comprises a front push control circuit, a lower pressing control circuit and a sensing circuit; the front push control circuit is provided with a front push electromagnetic valve for starting a front push mechanism; the sensing circuit is provided with an in-place sensing assembly, the in-place sensing assembly comprises a sensing device and a switching device; the sensing device is used for sensing whether the front push mechanism is moved to a position, so as to control the switching device to be closed; the lower pressing control circuit comprises a sensing control main circuit and a first lower pressing branch circuit and a second lower pressing branch circuit which are arranged in parallel; the switching device is located in the sensing control main circuit; the first lower pressing branch circuit is provided with a lower pressing electromagnetic valve for starting a lower pressing mechanism; the second lower pressing branch circuit is provided with a first time delay relay, and the normally closed contact of the first time delay relay is arranged in series in the first lower pressing branch circuit. The control circuit provided by the application has the advantages of simple structure, lower cost, safe and convenient operation and stable automatic performance.

Description

Technical Field

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

[0002] Currently, due to the new structure in the battery pack, the top seal of the battery cell needs to be bent, and the bent portion needs to be fixed with adhesive. During the bending and adhesive curing stages, the cell head is subjected to stress, and the corners on both sides of the cell head and the top seal are also subjected to stress, making the aluminum-plastic film of the cell easily crushed and damaged, thus leading to the risk of battery corrosion. Therefore, it is necessary to measure the voltage between the positive electrode of the cell and the aluminum-plastic film to perform a side voltage test on the battery and identify potentially hazardous cells in advance.

[0003] Most existing edge voltage testing devices control the operation of the test components through PLCs. The high cost of PLCs leads to a high cost of edge voltage testing devices. Utility Model Content

[0004] The purpose of this application is to provide a side voltage testing device to solve the problem of high cost of existing side voltage testing devices.

[0005] This application provides a side voltage testing device, including a pushing mechanism and a pressing mechanism, and the side voltage testing device also includes a control circuit; The control circuit includes a forward control circuit, a downward control circuit, and a sensing circuit. The forward control circuit is equipped with a forward solenoid valve, which is used to activate the forward mechanism. The sensing circuit is equipped with a positioning sensing component, which includes a sensing device and a switching device; the sensing device is used to sense whether the forward pushing mechanism has moved to the positioning position, and when the forward pushing mechanism has moved to the positioning position, the switching device closes. The pressure control circuit includes a main inductive control circuit, a first pressure branch circuit and a second pressure branch circuit connected to and parallel to the main inductive control circuit; the switching device is located on the main inductive control circuit; the first pressure branch circuit is equipped with a pressure solenoid valve, which is used to activate the pressure mechanism; the second pressure branch circuit is equipped with a first time delay relay, and the normally closed contact of the first time delay relay is connected in series in the first pressure branch circuit.

[0006] In the above technical solution, the forward control circuit further includes a forward start switch, which is connected in series with the forward solenoid valve; The pressure-down control circuit also includes a pressure-down start main circuit; the sensing circuit and the sensing control main circuit are connected to the pressure-down start main circuit, and the sensing circuit and the sensing control main circuit are connected in parallel; the pressure-down start main circuit is provided with a pressure-down start switch; The forward start switch and the downward start switch are linked to open and close.

[0007] In the above technical solution, the control circuit further includes a power supply and a main control circuit; The main control circuit, the forward control circuit, and the downward control circuit are connected in parallel and are all connected to the power supply. The main control circuit is equipped with a main start switch and a main start relay connected in series; the push-to-start switch is the first normally open contact of the main start relay, and the push-to-start switch is the second normally open contact of the main start relay.

[0008] In the above technical solution, the control circuit further includes a short-circuit circuit; A first connection point is provided between the push-start switch and the push-solenoid valve, and one end of the short-circuit circuit is connected to the first connection point; a second connection point is provided between the main start switch and the main start relay, and the other end of the short-circuit circuit is connected to the second connection point; The short-circuit circuit is used to short-circuit the main start switch, so that the circuit where the push-start switch is located forms the push-start main circuit, and the push-start solenoid valve is connected in parallel with the main start relay.

[0009] In the above technical solution, the pressure control circuit further includes a third pressure branch; The third downward pressure branch is equipped with a second time delay relay, and the normally open contact of the first time delay relay is connected in series in the third downward pressure branch; The normally closed contact of the second time delay relay is connected in series in the forward start main circuit.

[0010] In the above technical solution, the main start switch is further defined as a foot switch.

[0011] In the above technical solution, the sensing device is a position sensor, the switching device is a position relay, the position sensor and the position relay are connected in series in the sensing circuit, and the normally open contact of the position relay is located in the sensing control main circuit.

[0012] In the above technical solution, the forward pushing mechanism further includes a forward pushing cylinder, the forward pushing cylinder is connected to a first air supply pipe, and the forward pushing solenoid valve is installed on the first air supply pipe. The pressing mechanism includes a pressing cylinder, which is connected to a second air supply pipe, and the pressing solenoid valve is installed on the second air supply pipe.

[0013] The above technical solution further includes a main gas supply pipeline; The main gas supply pipeline is connected to the first gas supply pipeline and the second gas supply pipeline via a tee; the main gas supply pipeline is equipped with a pressure regulating valve.

[0014] Furthermore, the above technical solution also includes a fixture housing, and the control circuit is installed inside the fixture housing.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The side voltage testing device provided in this application controls the forward pushing mechanism and the downward pressing mechanism through a control circuit. The signal transmission, conversion and control of the device's operation are achieved through devices such as relays, solenoid valves and time delays. Compared with PLC control, the control circuit composed of the above electrical components has a simpler circuit structure, lower cost, and is safer, more convenient to operate, and has stable automatic performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the side voltage testing device provided in this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic diagram of the internal structure of the edge voltage testing device provided in this application; Figure 4 This is a schematic diagram of the control circuit of the side voltage testing device provided in this application.

[0018] In the diagram: 101-Push-forward mechanism; 102-Press-down mechanism; 103-Battery cell; 104-Base; 105-Cut-off mechanism; 106-Limit post; 107-Cut-off mechanism; 108-Conductive block; 109-Spring; 110-Positioning block; 111-Positive test post; 112-Push-forward solenoid valve; 113-Press-down solenoid valve; 114-First time-delay relay; 115-Normally closed contact of the first time-delay relay; 116-Landing sensor; 117-Landing relay; 118-Landing relay Electrical appliance normally open contact; 119-Main start relay; 120-First normally open contact of main start relay; 121-Second normally open contact of main start relay; 122-Foot switch; 123-Short circuit; 124-Second time delay relay; 125-Normal open contact of first time delay relay; 126-Normal closed contact of second time delay relay; 127-Push forward cylinder; 128-Push down cylinder; 129-Pressure regulating valve; 130-Pressure gauge; 131-Jig housing; 132-Power supply. Detailed Implementation

[0019] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. 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.

[0020] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Example 1 See Figures 1 to 4As shown, the side voltage testing device provided in this application includes a pushing mechanism 101 and a pressing mechanism 102.

[0023] The forward pushing mechanism 101 drives the base 104, which carries the battery cell 103, to advance along the first slide rail, so that the top sealing edge of the battery cell 103 contacts the cutting mechanism 105 at the front end. As the battery cell 103 moves, the cutting mechanism 105 cuts into the top sealing edges on both sides of the battery cell 103, thereby connecting with the functional test leads. The movement of the base 104 on the first slide rail ensures a stable and reliable travel path, which can greatly improve the test yield of the side voltage during operation. A limit post 106 is provided at the front end of the base 104. The limit post 106 is used to limit the forward distance of the base 104. The base 104 is provided with multiple movable mounting blocks for mounting and fixing battery cells 103 of different sizes.

[0024] like Figure 2 As shown, the cutting mechanism 105 includes a cutter 107, a conductive block 108, a spring 109, and a positioning block 110. The conductive block 108 is specifically a copper block connected to the cutter 107, and it can slide along a second slide rail, the second slide rail having the same guiding direction as the first slide rail. Preferably, the position of the cutter 107, i.e., the conductive block 108, can be adjusted in a guiding direction perpendicular to the second slide rail to meet the testing requirements of battery cells 103 of different sizes. The spring 109 is located between the conductive block 108 and the positioning block 110, effectively preventing the risk of over-cutting. The cutter 107 uses a 10~15° bevel angle, allowing for better cutting into the top sealing edges on both sides of the battery cell 103.

[0025] After the base 104 moves into position, the pressing mechanism 102 drives the positive test post 111 to press down. The positive test post 111 is a copper post that is connected to the positive electrode tab of the cell 103. At the same time, the cutter 107 cuts into the top sealing edge on both sides of the cell 103, thereby forming a side voltage test circuit. The side voltage test device can then measure the voltage between the aluminum-plastic film of the cell 103 and the positive electrode.

[0026] like Figure 3 and Figure 4 As shown, the side voltage testing device provided in this application also includes a control circuit for controlling the operation of the pushing mechanism 101 and the pressing mechanism 102.

[0027] Specifically, the control circuit includes a forward control circuit, a downward control circuit, and a sensing circuit. The forward control circuit is equipped with a forward solenoid valve 112, which activates the forward mechanism 101, causing it to drive the base 104, which carries the battery cell 103, forward. The top sealing edge of the battery cell 103 contacts the cutter 107. The sensing circuit is equipped with a position sensing component, which includes a sensing device and a switching device. When the base 104 moves to the detection position, the sensing device detects that the forward mechanism 101 has moved into position. The sensing device then communicates with the switching device to close the switching device.

[0028] The pressure-down control circuit includes a main inductive control circuit, a first pressure-down branch connected to and in parallel with the main inductive control circuit, and a second pressure-down branch. A switching device is located on the main inductive control circuit. The first pressure-down branch is equipped with a pressure-down solenoid valve 113, which is used to activate the pressure-down mechanism 102. The second pressure-down branch is equipped with a first time-delay relay 114, and the normally closed contact 115 of the first time-delay relay is connected in series with the first pressure-down branch to control the operating time of the pressure-down mechanism 102.

[0029] When the switching device is closed, the solenoid valve 113 on the first downward pressure branch connected to the inductive control main circuit is energized. The solenoid valve 113 activates the downward pressure mechanism 102, causing the positive test post 111 to be pressed down to connect with the positive electrode tab of the battery cell 103. Simultaneously, the first time-delay relay 114 on the second downward pressure branch connected to the inductive control main circuit is energized, and the first time-delay relay 114 begins its delay timing. The delay time of the first time-delay relay 114 is the time for the downward pressure mechanism 102 to operate and for the test to be completed. After the delay timing of the first time-delay relay 114 ends, the normally closed contact 115 of the first time-delay relay opens, the first downward pressure branch opens, the solenoid valve 113 is de-energized to reset the downward pressure mechanism 102, and the side voltage test circuit opens, thus completing the test.

[0030] Furthermore, the control circuit's structural design is highly flexible, allowing it to adapt to different testing requirements by adjusting the parameters of components such as solenoid valves and time-delay relays. For example, changing the delay time of the first time-delay relay 114 can meet the different requirements of various testing conditions regarding the start-up time of the pressing mechanism 102.

[0031] The side voltage testing device provided in this application controls the operation of the forward pushing mechanism 101 and the downward pressing mechanism 102 through a control circuit. The signal transmission, conversion and control of the device operation are realized through electrical components such as relays, solenoid valves and time delays. The control circuit composed of the above electrical components has a simple circuit structure, lower cost, and is safe, convenient to operate and has stable automatic performance.

[0032] In this optional embodiment, the sensing device is a position sensor 116, and the switching device is a position relay 117. The position sensor 116 and the position relay 117 are connected in series in the sensing circuit, and the normally open contact 118 of the position relay is located in the main sensing control circuit. Specifically, the position sensor 116 is non-contact and can provide high-precision position information, thereby controlling the conduction of the pressure control circuit.

[0033] Alternatively, the sensing device can also be a contact type, such as a limit switch. When the push mechanism 101 moves to the detection position, it can trigger the limit switch, which then activates the pressure control circuit.

[0034] In an optional embodiment, the forward control circuit further includes a forward start switch, which is connected in series with the forward solenoid valve 112; the downward control circuit further includes a downward start main circuit; the sensing circuit and the sensing control main circuit are connected to the downward start main circuit, and the sensing circuit and the sensing control main circuit are connected in parallel; the downward start main circuit is provided with a downward start switch; the forward start switch and the downward start switch are linked to open and close.

[0035] In this embodiment, the push-start switch and the push-down start switch are linked to open and close, ensuring that the push control circuit and the push control circuit are energized synchronously. The operator only needs to operate one switch to simultaneously start or stop both the push control circuit and the push control circuit, simplifying the operation process and reducing the possibility of misoperation. Specifically, after closing both the push-start switch and the push-down start switch, the push mechanism 101 moves first. Before the push mechanism 101 reaches its position, the switching device of the sensing component is disconnected, opening the push control circuit. Once the push mechanism 101 reaches its position, the push control circuit is activated, and the push mechanism 102 immediately moves, requiring no further operator intervention.

[0036] In an optional embodiment, the control circuit further includes a power supply 132 and a main control circuit; the main control circuit, the push control circuit, and the push control circuit are connected in parallel and are all connected to the power supply 132; the main control circuit is equipped with a main start switch and a main start relay 119 connected in series; the push start switch is the first normally open contact 120 of the main start relay, and the push start switch is the second normally open contact 121 of the main start relay.

[0037] Preferably, the main start switch is a foot switch 122, which controls the circuit on and off by stepping on or pressing the foot. It can replace the hands to achieve the purpose of operation and does not affect the operator's hands to perform other operations.

[0038] In this embodiment, centralized management of different circuits is achieved through the parallel design of the main control circuit, the forward control circuit, and the downward control circuit. This design makes the entire system structure clear and facilitates operation and maintenance. The series connection of the main start switch and the main start relay 119 ensures that the forward control circuit and the downward control circuit can only be turned on when the main start switch is on, which effectively simplifies operation.

[0039] In an optional embodiment, the control circuit further includes a short-circuit circuit 123; one end of the short-circuit circuit 123 is located between the push-start switch and the push-start solenoid valve 112, and the other end of the short-circuit circuit 123 is located between the main start switch and the main start relay 119; the short-circuit circuit 123 is used to short-circuit the main start switch so that the circuit where the push-start switch is located forms the push-start main circuit, and the push-start solenoid valve 112 and the main start relay 119 are connected in parallel.

[0040] In this embodiment, such as Figure 4 As shown, after the main start switch is closed, the main start relay 119 is energized, and the first normally open contact 120 of the main start relay (i.e., the push-start switch) closes, short-circuiting both ends of the main start switch. At the same time, the push-forward mechanism 101 and the push-down mechanism 102 operate sequentially. During this process, even if the main start switch is touched, it will not affect the operation of the device, thereby preventing accidental touch by the operator and improving the safety of the system.

[0041] In an optional embodiment, the pressure control circuit further includes a third pressure branch; the third pressure branch is provided with a second time-delay relay 124, and the normally open contact 125 of the first time-delay relay is connected in series in the third pressure branch; the normally closed contact 126 of the second time-delay relay is connected in series in the forward start main circuit.

[0042] In this embodiment, when the first time-delay relay 114 is energized, it begins to delay and its normally open contact 125 closes, energizing the second time-delay relay 124, which then begins to delay simultaneously. After the delay time of the first and second time-delay relays 114 and 124 ends, the normally closed contact 115 of the first time-delay relay opens, de-energizing the pressing solenoid valve 113 and resetting the pressing mechanism 102. The normally closed contact 126 of the second time-delay relay opens, de-energizing the main start relay 119 and the forward push solenoid valve 112. The de-energization of the forward push solenoid valve 112 resets the forward push mechanism 101, and the first and second normally open contacts 120 and 121 of the main start relay open, completely disconnecting the forward push control circuit and the pressing control circuit. In this way, after the operator turns on the main start switch, the device can run and test autonomously, and automatically shut down after the test is completed, realizing a fully automatic control process and simplifying the operator's operation steps.

[0043] Example 2 The side voltage testing device in this embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this embodiment.

[0044] See Figure 3 As shown, in the optional scheme of this embodiment, the forward pushing mechanism 101 includes a forward pushing cylinder 127, which is connected to a first air supply pipe, and a forward pushing solenoid valve 112 is installed on the first air supply pipe; the downward pressing mechanism 102 includes a downward pressing cylinder 128, which is connected to a second air supply pipe, and a downward pressing solenoid valve 113 is installed on the second air supply pipe.

[0045] In this embodiment, the airflow of the forward-pushing cylinder 127 can be precisely controlled by the forward-pushing solenoid valve 112, thereby achieving precise control of the forward-pushing action to ensure that the battery cell 103 moves to the detection position, so that the cutter 107 cuts into the top sealing edge without over-cutting. The airflow of the downward-pushing cylinder 128 can be precisely controlled by the downward-pushing solenoid valve 113 to ensure the accuracy and controllability of the downward-pushing action, ensuring that the positive electrode test post 111 is pressed into place and contacts the positive electrode tab of the battery cell 103. This ensures the accuracy of the test results of the edge voltage testing device.

[0046] In an optional embodiment, the side voltage testing device further includes a main gas supply pipeline; the main gas supply pipeline is connected to the first gas supply pipeline and the second gas supply pipeline via a tee; and a pressure regulating valve 129 is installed on the main gas supply pipeline.

[0047] In this embodiment, the pressure regulating valve 129 maintains stable air pressure, reducing inconsistencies or instabilities in mechanical actions caused by air pressure fluctuations. By installing the pressure regulating valve 129 on the main air supply pipeline, the air pressure of the entire system can be uniformly regulated. This ensures that the air pressure of the forward-pushing cylinder 127 and the downward-pushing cylinder 128 is consistent, thereby guaranteeing their coordinated and consistent actions, simplifying the air pressure regulation process, and reducing operational complexity. A pressure gauge 130 is provided on the pressure regulating valve 129 to display the air pressure value.

[0048] In an optional embodiment, the side voltage testing device further includes a fixture housing 131, and the control circuit is installed inside the fixture housing 131 to achieve protection for multiple components.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not 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; and these 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. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. A side voltage testing device, comprising a pushing mechanism and a pressing mechanism, characterized in that, The edge voltage testing device also includes a control circuit; The control circuit includes a forward control circuit, a downward control circuit, and a sensing circuit. The forward control circuit is equipped with a forward solenoid valve, which is used to activate the forward mechanism. The sensing circuit is equipped with a positioning sensing component, which includes a sensing device and a switching device; the sensing device is used to sense whether the forward pushing mechanism has moved to the positioning position, and when the forward pushing mechanism has moved to the positioning position, the switching device closes. The pressure control circuit includes a main inductive control circuit, a first pressure branch circuit and a second pressure branch circuit connected to and parallel to the main inductive control circuit; the switching device is located on the main inductive control circuit; the first pressure branch circuit is equipped with a pressure solenoid valve, which is used to activate the pressure mechanism; the second pressure branch circuit is equipped with a first time delay relay, and the normally closed contact of the first time delay relay is connected in series in the first pressure branch circuit.

2. The edge voltage testing device according to claim 1, characterized in that, The forward control circuit also includes a forward start switch, which is connected in series with the forward solenoid valve. The pressure-down control circuit also includes a pressure-down start main circuit; the sensing circuit and the sensing control main circuit are connected to the pressure-down start main circuit, and the sensing circuit and the sensing control main circuit are connected in parallel; the pressure-down start main circuit is provided with a pressure-down start switch; The forward start switch and the downward start switch are linked to open and close.

3. The edge voltage testing device according to claim 2, characterized in that, The control circuit also includes a power supply and a main control circuit; The main control circuit, the forward control circuit, and the downward control circuit are connected in parallel and are all connected to the power supply. The main control circuit is equipped with a main start switch and a main start relay connected in series; the push-to-start switch is the first normally open contact of the main start relay, and the push-down start switch is the second normally open contact of the main start relay.

4. The edge voltage testing device according to claim 3, characterized in that, The control circuit also includes a short-circuit circuit; A first connection point is provided between the push-start switch and the push-solenoid valve, and one end of the short-circuit circuit is connected to the first connection point; a second connection point is provided between the main start switch and the main start relay, and the other end of the short-circuit circuit is connected to the second connection point; The short-circuit circuit is used to short-circuit the main start switch, so that the circuit where the push-start switch is located forms the push-start main circuit, and the push-start solenoid valve is connected in parallel with the main start relay.

5. The edge voltage testing device according to claim 4, characterized in that, The down-pressure control circuit also includes a third down-pressure branch; The third downward pressure branch is equipped with a second time delay relay, and the normally open contact of the first time delay relay is connected in series in the third downward pressure branch; The normally closed contact of the second time delay relay is connected in series in the forward start main circuit.

6. The edge voltage testing device according to claim 3, characterized in that, The main start switch is a foot switch.

7. The edge voltage testing device according to claim 1, characterized in that, The sensing device is a position sensor, and the switching device is a position relay. The position sensor and the position relay are connected in series in the sensing circuit, and the normally open contact of the position relay is located in the sensing control main circuit.

8. The edge voltage testing device according to claim 1, characterized in that, The forward pushing mechanism includes a forward pushing cylinder, the forward pushing cylinder is connected to a first air supply pipe, and the forward pushing solenoid valve is installed on the first air supply pipe. The pressing mechanism includes a pressing cylinder, which is connected to a second air supply pipe, and the pressing solenoid valve is installed on the second air supply pipe.

9. The edge voltage testing device according to claim 8, characterized in that, This also includes the main gas supply pipeline; The main gas supply pipeline is connected to the first gas supply pipeline and the second gas supply pipeline via a tee; the main gas supply pipeline is equipped with a pressure regulating valve.

10. The edge voltage testing device according to claim 1, characterized in that, It also includes a fixture housing, and the control circuit is installed inside the fixture housing.

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