Winding line detection method and power supply device

Abstract

The invention relates to the technical field of line detection, in particular to a winding line detection method and a power supply device.By means of the power supply device and a clip-on ammeter, the winding line can be detected only by clamping the clip-on ammeter on a winding cable, changing the connection mode of the power supply device and a winding core wire and observing the display value of the clip-on ammeter. Wiring detection of a winding circuit can be achieved through simple calculation, the whole process can be completed by one person, operation is more convenient, and time and labor are saved.

Description

Technical Field

[0001] This invention relates to the technical field of circuit testing, and in particular to a method and power supply device for testing winding circuits. Background Technology

[0002] Due to the unique nature of scientific research operations on government vessels, a magnetic field cancellation system is required to minimize the impact of the vessel's magnetic field on the surrounding environment. This system primarily consists of a power distribution board, a power control board, a magnetic field detector, and magnetic field windings. The correctness of the winding wiring directly affects the overall system efficiency. Furthermore, the numerous winding junction boxes scattered throughout the vessel, with their complex internal wiring, result in a substantial workload for measurement.

[0003] Figure 1 This is a schematic diagram of the magnetic field orientation method, where ⊙ indicates that the magnetic field direction is perpendicular to the paper and upwards, and B is the direction in which the magnetic field of the conductor surrounds. Figure 2 This is a field implementation diagram of the magnetic field orientation method. The diagram is labeled: 01, incandescent light bulb; 02, dry cell battery; 03, magnetic field orientation instrument; 04, junction box; 05, magnetic probe. Combined with... Figure 1 and Figure 2 The existing methods for magnetic field orientation measurement are as follows:

[0004] 1. Place the magnetic probe close to the cable being tested and adjust the magnetic probe so that the overall ambient magnetic field strength is within the range of the magnetic field strength measuring instrument;

[0005] 2. Adjust the zeroing knob of the magnetic field strength measuring instrument so that the pointer points to near 0;

[0006] 3. Apply a power supply of the specified polarity to the corresponding terminals in the winding junction box;

[0007] 4. Check the direction of the pointer deflection of the magnetic field orienter to determine the direction of the magnetic field;

[0008] 5. Based on the drawing requirements and Ampere's Law II, determine the correctness of the direction of the actual magnetic field generated by the cable under test;

[0009] 6. Repeat the above steps to check the correctness of the direction of the magnetic field generated by the other coil.

[0010] Existing methods for measuring winding connections are cumbersome and require a significant amount of time and manpower.

[0011] 1. Requires multiple operators. One person applies power to the winding, another holds the magnetic field orienter to perform zeroing and observe the direction of pointer deflection, and another locates the magnetic probe placement point and adjusts the magnetic probe angle.

[0012] 2. Difficulty in adjusting the magnetic probe's position and attitude. Due to the high sensitivity of the magnetic probe, it is easily affected by the Earth's and the ship's own magnetic field, making the zeroing process of the magnetic field orienteering instrument difficult and time-consuming. Furthermore, a fixed attitude must be maintained while the windings are energized; any slight change will cause the magnetic field strength to exceed the measurement range of the small-range setting of the magnetic field orienteering instrument, resulting in unobservable data and requiring re-zeroing. If the range is increased, the pointer deflection angle is extremely small when power is applied, making observation difficult. Summary of the Invention

[0013] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a winding circuit detection method and power supply device to solve the problem that the winding wiring measurement method in the prior art is relatively cumbersome to operate and requires a lot of time and manpower.

[0014] To achieve the above and other related objectives, the present invention provides a method for detecting winding circuits. The winding circuits include multiple terminals and multiple winding cores, which are connected in series to form multiple winding coils. The multiple winding cores are bundled into a winding cable. The method is based on a clamp-on ammeter and a power supply device, wherein the power supply device provides an adjustable current and displays the current value. The detection method includes:

[0015] S20: Clamp the clamp ammeter onto the winding cable so that the clamp ammeter displays a positive number when the direction of the current through the winding cable is the theoretical current direction, wherein the theoretical current direction is the current direction when the winding circuit is correctly connected according to the wiring diagram;

[0016] S30: Connect the positive terminal of the power supply device to the beginning of the winding core wire and the negative terminal to the end of the winding core wire to energize at least one winding coil and determine the number a of the energized winding coils, wherein the beginning of the winding core wire is the end where the theoretical current flows into the winding core wire and the end of the winding core wire is the end where the theoretical current flows out of the winding core wire.

[0017] S40: Select the DC current measurement range for the clamp meter and zero it;

[0018] S50: Adjust the power supply device so that the current value displayed by the power supply device is A1;

[0019] S60: Observe the display value A2 of the clamp ammeter. If there is no display value, it means that at least one of the energized winding coils has a break. At this time, proceed to step S61: check all the energized winding coils one by one until the fault point is found. If there is a display value, proceed to step S70.

[0020] S70: Determine the size of A2 and a*A1. If they are equal, it means that all the energized winding cores are connected correctly. If they are less than, it means that at least one of the energized winding cores is connected with its start and end reversed. In this case, proceed to step S71: Check all the energized winding coils one by one until the fault point is found.

[0021] S80: Continue with steps S30-S70 until all the winding coils are energized.

[0022] Optionally, in step S61, the step of checking each of the energized winding coils one by one includes:

[0023] S62: Connect the positive and negative terminals of the power supply device to the beginning and end of one of the winding core wires, respectively, so that the corresponding winding coil is energized;

[0024] S63: Observe whether the clamp meter displays a value. If it does, it means that there is no break in the corresponding winding coil. If not, it means that there is a break in the corresponding winding coil.

[0025] Optionally, in step S71, the step of checking each of the energized winding coils one by one includes:

[0026] S72: Connect the positive and negative terminals of the power supply device to the beginning and end of one of the winding core wires, respectively, so that the corresponding winding coil is energized;

[0027] S73: Observe the display value of the clamp ammeter. If it is positive, it means that the corresponding winding core wire is connected correctly. If it is negative, it means that the beginning and end of the corresponding winding core wire are reversed.

[0028] Optionally, before step S20, the theoretical magnetic field direction and theoretical current direction of the winding circuit are obtained according to the wiring diagram of the winding circuit.

[0029] Optionally, the power supply device can also be used for low-voltage alarm, and before step S50, it further includes:

[0030] S51: Observe whether the power supply device alarms for low voltage. If so, proceed to step S52: Charge the power supply device.

[0031] The present invention also provides a power supply device for the winding circuit detection method described above. The power supply device includes a battery, an adjustable power control board, a wiring unit, a current adjustment unit, a current monitoring and display unit, and a low-voltage alarm unit. The battery provides the power required for the operation of the power supply device. The adjustable power control board can be used for voltage and current adjustment and control. The wiring unit is used to realize the electrical connection between the power supply device and the winding circuit. The current adjustment unit is used to adjust the output current. The current monitoring and display unit is used to display the output current. The low-voltage alarm unit is used to issue an alarm when the power supply device has insufficient power.

[0032] Optionally, the wiring unit includes an output socket, a lantern plug, and an alligator clip. The output socket is connected to the output terminal of the adjustable power control board. The lantern plug can be inserted into the output socket. The lantern plug and the alligator clip are connected by a wire. The alligator clip can be used to connect to the wiring terminal.

[0033] Optionally, the power supply device further includes a housing, on which a fixing buckle is provided for securing the housing to the winding junction box;

[0034] The outer casing is also provided with a handle, which is used to hang the outer casing on the winding junction box.

[0035] Optionally, the power supply device further includes a charging socket, which is provided with an insulating protective cover to protect the charging socket.

[0036] Optionally, the power supply device further includes a battery retaining clip for securing the battery.

[0037] In a winding circuit testing method of the present invention, a power supply device and a clamp-on ammeter are used. The clamp-on ammeter is simply clamped on the winding cable. By changing the connection method between the power supply device and the winding core wire and observing the display value of the clamp-on ammeter, the wiring test of the winding circuit can be achieved through simple calculation. The whole process can be completed by one person, making the operation more convenient, time-saving and labor-saving. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the magnetic field orientation method in the background technology of this invention;

[0039] Figure 2 This is a schematic diagram of the field implementation of the magnetic field orientation method in the background technology of this invention;

[0040] Figure 3 This is a schematic diagram of the connection structure of some winding core wires in one embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the on-site implementation of the winding circuit detection method in one embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of a winding circuit detection method according to an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of a power supply device according to an embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the internal structure of a power supply device according to an embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the wiring unit in one embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram illustrating the structure of the fixed bayonet in one embodiment of the present invention;

[0047] Figure 10 This is a circuit diagram of a power supply device according to an embodiment of the present invention. Detailed Implementation

[0048] The following reference Figures 1 to 10 This invention describes a winding circuit detection method and power supply device. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0049] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] like Figure 3 and Figure 4 As shown, the winding circuit includes multiple terminals 5 and multiple winding core wires 4. The multiple terminals 5 and multiple winding core wires 4 are connected in series to form multiple winding coils. The multiple winding core wires 4 are bundled together to form a winding cable 6.

[0053] Specifically, the winding circuit is set on the winding junction box 2, and multiple terminals 5 are located inside the winding junction box 2. The theoretical current direction is defined as the direction of current when the winding circuit is correctly connected according to the wiring diagram. The direction of theoretical current inflow is used as the positive terminal of terminal 5 and the beginning of the winding core wire 4, and the direction of theoretical current outflow is used as the negative terminal of terminal 5 and the end of the winding core wire 4. When correctly connected according to the wiring diagram, the positive terminal of the first terminal 5 is connected to the positive terminal of the power supply, and the negative terminal of the last terminal 5 is connected to the negative terminal of the power supply. The beginning of the winding core wire 4 is connected to the negative terminal of terminal 5, and the end of the winding core wire 4 is connected to the positive terminal of the next adjacent terminal 5. After the beginning of the winding core wire 4 is bundled inside the winding junction box 2, it forms a winding cable 6 that exits the winding junction box 2. After returning to the winding junction box 2, the winding cable 6 disperses again and connects to the positive terminals of each terminal 5, thus forming multiple winding coils.

[0054] like Figures 3-5As shown, this embodiment of the invention provides a winding circuit detection method based on a clamp-on ammeter 3 and a power supply device 1. The power supply device 1 is used to provide an adjustable current and display the current value. The detection method includes:

[0055] S20: Clamp the clamp-on ammeter 3 onto the winding cable 6 so that the clamp-on ammeter 3 displays a positive number when the direction of the current passing through the winding cable 6 is the theoretical current direction. That is, when the direction of the current passing through the winding cable 6 is determined to be the theoretical current direction, the direction in which the theoretical current passes through the clamp-on ammeter 3 is selected to make the clamp-on ammeter 3 display a positive number. Since the sensing element inside the clamp-on ammeter 3 is a linear Hall element, when current passes through the clamp-on ammeter 3, the magnetic field signal generated around the conductor is amplified by the ammeter, and the clamp-on ammeter 3 will display a positive or negative number. Therefore, the direction of the current can be determined by the sign of the value displayed by the clamp-on ammeter 3. Conversely, after determining the direction of the current, the direction in which the current passes through the clamp-on ammeter 3 can also be selected to make the clamp-on ammeter 3 display a positive number.

[0056] S30: Connect the positive terminal of the power supply device 1 to the beginning of the winding core wire 4 and the negative terminal to the end of the winding core wire 4 to energize at least one winding coil, and determine the number a of the energized winding coils.

[0057] S40: Select the DC current measurement range for clamp meter 3 and zero it.

[0058] S50: Adjust the power supply device 1 so that the current value displayed by the power supply device 1 is A1.

[0059] S60: Observe the display value A2 of clamp meter 3. If there is no display value, it means that at least one of the energized winding coils has a break. At this time, proceed to step S61: check all the energized winding coils one by one until the fault point is found. If there is a display value, proceed to step S70.

[0060] S70: Determine the size of A2 and a*A1. If they are equal, it means that all the energized winding cores 4 are connected correctly. If they are less than, it means that at least one of the energized winding cores 4 has its start and end reversed. In this case, proceed to step S71: Check all the energized winding coils one by one until the fault point is found.

[0061] S80: Continue with steps S30-S70 until all winding coils are energized.

[0062] In a steady magnetic field, the line integral of the magnetic flux density B along any closed path is equal to μ0 times the algebraic sum of the currents enclosed by that closed path. That is, ∮ L BdL=μ0∑I int In the formula: μ0 represents the magnetic permeability, Iint This represents the current flowing through a single coil. Since the coils are connected in series, the current I in each coil is... 线 All are equal. When clamp meter 3 measures a series circuit consisting of interconnected winding coils, if the current direction of each winding coil is the same, then the measured value I of clamp meter 3 will be equal. 测 =N·I 线 If there are opposite current directions in the various winding coils, then the measured value I of clamp meter 3 will be... 测 =N·I 线 -2·N'·I 线 Where N is the total number of winding coils, and N' is the number of winding coils with reversed current.

[0063] Therefore, when the wiring of the energized winding coil is completely correct, A2 and a*A1 are equal. However, when some winding core wires 4 are connected with their ends reversed, A2 is less than a*A1. This is because the core wire numbers printed on the winding core wires 4 are the same, and such errors are very likely to occur if the wiring personnel are not careful when organizing and connecting the winding core wires 4. When there are winding core wires 4 with their ends reversed, all energized winding coils should be checked one by one until the fault point is found. If the clamp meter 3 does not display a value, it indicates that there is a break in the energized winding coil, causing no current to flow through it. This could be due to incorrect wiring sequence of the winding core wires 4 or poor contact of the winding core wires 4. In this case, all energized winding coils also need to be checked one by one until the fault point is found. Then, continue to perform the above steps to energize and test the remaining winding coils, thus completing the test of the entire winding circuit. Using the power supply device 1 and the clamp meter 3, the wiring test of the winding circuit can be achieved simply by clamping the clamp meter 3 onto the winding cable 6, changing the connection method between the power supply device 1 and the winding core wire 4, and observing the display value of the clamp meter 3. The entire process can be completed by one person, making the operation more convenient, time-saving and labor-saving.

[0064] Optionally, there are 20 winding cores 4, numbered 1-20 according to their series sequence. Connect the positive terminal of the power supply device 1 to the beginning of winding core 4 (number 1), and the negative terminal to the end of winding core 4 (number 10). At this time, 10 winding coils are energized. Adjust the power supply device 1 so that the displayed current value is 1A. Observe the display value of the clamp-on ammeter 3. If the clamp-on ammeter 3 shows no current value, it indicates a break in the wiring of winding cores 4 (numbers 1-10). Then, check each of the winding cores 4 (numbers 1-10) one by one. If the clamp-on current display value is 10A, it indicates that all 10 measured winding cores 4 are correctly connected. If the clamp-on current display value is less than 10A, it indicates that at least one of the 10 measured winding cores 4 has its beginning and end reversed. In this case, it is also necessary to check each of the winding cores 4 (numbers 1-10) one by one. After the core wires 4 of windings 1-10 have been inspected and checked, connect the positive terminal of the power supply device 1 to the beginning of the core wire 4 of winding 11 and the negative terminal to the end of the core wire 4 of winding 20. Then, follow the same method to inspect the remaining core wires 4 of windings 11-20 to complete the inspection of all core wires 4.

[0065] Optionally, the clamp ammeter 3 is equipped with a zeroing key, which can be pressed to zero the clamp ammeter 3.

[0066] Furthermore, in step S61, all energized winding coils are checked one by one, including:

[0067] S62: Connect the positive and negative terminals of the power supply device 1 to the beginning and end of one of the winding core wires 4, respectively, so as to energize the corresponding winding coil.

[0068] S63: Observe whether clamp meter 3 displays a value. If it does, it means that there is no break in the corresponding winding coil. If not, it means that there is a break in the corresponding winding coil.

[0069] If clamp meter 3 does not display a value when one of the winding coils is energized, it indicates that no current is flowing through the corresponding winding coil, thus indicating that there is a break in the corresponding winding coil. The operation is relatively simple.

[0070] Furthermore, in step S71, all energized winding coils are checked one by one, including:

[0071] S72: Connect the positive and negative terminals of the power supply device 1 to the beginning and end of one of the winding core wires 4, respectively, so that the corresponding winding coil is energized.

[0072] S73: Observe the display value of clamp meter 3. If it is positive, it means that the corresponding winding core wire 4 is connected correctly. If it is negative, it means that the beginning and end of the corresponding winding core wire 4 are reversed.

[0073] By energizing one of the winding coils and observing the positive or negative value displayed on the clamp meter 3, it is possible to determine whether the corresponding winding core wire 4 is connected correctly. The operation is relatively simple.

[0074] Furthermore, prior to step S20, the theoretical magnetic field direction and theoretical current direction of the winding circuit are obtained based on the wiring diagram of the winding circuit. The theoretical magnetic field direction and theoretical current direction of the winding circuit can be determined based on the pre-designed wiring diagram of the winding circuit.

[0075] Furthermore, the power supply unit 1 can also be used for low-voltage alarm, and before step S50, it further includes:

[0076] S51: Observe whether the power supply device 1 alarms for low voltage. If so, proceed to step S52: Charge the power supply device 1.

[0077] When power supply unit 1 issues a low voltage alarm, it indicates that the power supply unit 1 is insufficient. At this time, power supply unit 1 should be charged to meet the usage requirements.

[0078] like Figures 6-10 As shown, the present invention also provides a power supply device, including a battery 8, an adjustable power control board 9, a wiring unit, a current adjustment unit, a current monitoring and display unit, and a low-voltage alarm unit. The battery 8 provides the power required for the power supply device to operate. The adjustable power control board 9 can be used for voltage and current adjustment and control. The wiring unit is used to realize the electrical connection between the power supply device and the winding circuit. The current adjustment unit is used to adjust the output current. The current monitoring and display unit is used to display the output current. The low-voltage alarm unit is used to sound an alarm when the power supply device has insufficient power.

[0079] When it is necessary to test the winding circuit, the power supply and the winding circuit are electrically connected through the wiring unit. The output current is adjusted by the current adjustment unit. When the output current displayed by the current monitoring and display unit meets the current required for winding circuit testing, the current adjustment unit can be stopped. The operation is relatively simple.

[0080] Furthermore, the negative terminal of battery 8 is connected to the negative power input terminal of adjustable power control board 9.

[0081] Furthermore, the power supply device also includes a fuse holder 10 and a power switch 11. One pin of the fuse holder 10 is connected to the positive terminal of the battery 8, and the other pin is connected to one pin of the power switch 11. The other pin of the power switch 11 is connected to the positive input terminal of the adjustable power control board 9. By providing the fuse holder 10, the power switch 11 can be switched off in the event of a circuit fault, thereby improving circuit safety.

[0082] Optionally, the battery 8 is a high-capacity 12V lithium battery 8, and the power switch 11 is a snap-on two-prong two-position rocker switch.

[0083] Furthermore, the wiring unit includes an output socket 12, a lantern plug 13, and an alligator clip 14. The output socket 12 is connected to the output terminal of the adjustable power control board 9. The lantern plug 13 can be inserted into the output socket 12, and the lantern plug 13 is connected to the alligator clip 14 via a wire 15. The alligator clip 14 can be used to connect to a terminal block. The alligator clip 14 facilitates connection to a terminal block.

[0084] Optionally, the output socket 12 is a banana plug. The alligator clip 14 is fitted with an insulating protective sleeve. The length of the conductor 15 is not less than the angled distance from the winding junction box plus 20 cm.

[0085] Furthermore, the current adjustment unit includes a current-adjustable potentiometer and a current adjustment knob 16. The current-adjustable potentiometer is connected to the adjustable power control board 9. Specifically, the current-adjustable potentiometer is connected to the corresponding I ADJ interface of the adjustable power control board 9. The current adjustment knob 16 is used to adjust the current-adjustable potentiometer.

[0086] Furthermore, the power supply unit also includes a voltage regulation unit, which includes a voltage adjustable potentiometer and a voltage adjustment knob 17. The voltage adjustable potentiometer is connected to the adjustable power control board 9. Specifically, the voltage adjustable potentiometer is connected to the corresponding UADJ interface of the adjustable power control board 9. The voltage adjustment knob 17 is used to adjust the voltage adjustable potentiometer.

[0087] Optionally, both the current adjustment knob 16 and the voltage adjustment knob 17 are non-slip knobs.

[0088] Furthermore, the current monitoring and display unit includes a current display screen 18, which is connected to the adjustable power control board 9. Specifically, the sampling pin of the current display screen 18 is connected in series with the positive output terminal of the adjustable power control board 9, and the positive and negative terminals of the power input are connected in parallel with the positive and negative input terminals of the adjustable power control board 9, respectively.

[0089] Furthermore, the power supply device also includes a voltage monitoring and display unit, which includes a voltage display screen 19 connected to the adjustable power control board 9. Specifically, the sampling pins of the voltage display screen 19 are respectively connected to the positive and negative output terminals of the adjustable power control board 9, and the positive and negative terminals of the power input are connected in parallel with the positive and negative input terminals of the adjustable power control board 9.

[0090] Optionally, both the current display 18 and the voltage display 19 are equipped with LED digital voltage displays 19 to facilitate data reading in low-light conditions.

[0091] Furthermore, the low-voltage alarm unit includes a low-voltage monitoring board 20 and a low-voltage alarm light 21. The positive input terminal of the low-voltage monitoring board 20 is connected to the power switch 11, and the negative input terminal is connected to the negative terminal of the battery 8. The positive output terminal of the low-voltage monitoring board 20 is connected to the positive terminal of the low-voltage alarm light 21, and the negative output terminal is connected to the negative terminal of the low-voltage alarm light 21. Optionally, the low-voltage alarm light 21 is an LED alarm indicator.

[0092] Furthermore, the power supply unit also includes a housing 7, which is used to protect the electrical components inside the power supply unit. Optionally, the housing 7 is made of high-strength flame-retardant and impact-resistant ABS board, and is divided into upper and lower parts. The upper panel housing 7 is fixed to the lower housing 7 at the four corners with Phillips head screws.

[0093] Furthermore, the outer casing 7 is provided with a fixing clip 22, which is used to secure the outer casing 7 to the winding junction box. Specifically, the fixing clip 22 is a U-shaped bayonet made of a thin stainless steel sheet, and the opening width is the thickness of the thin plate of the winding junction box. In use, the fixing clip 22 can be inserted into the side wall of the winding junction box to fix the power supply device.

[0094] Furthermore, the outer casing 7 is also equipped with a handle 23, which is used to hang the outer casing 7 on the winding junction box. Specifically, the handle 23 is made of imitation leather and is fixed to the outer casing 7 with rivets. This facilitates carrying and allows it to be hung on the winding junction box for convenient construction.

[0095] Furthermore, the power supply device also includes a charging socket 24, the positive pin of which is connected to the positive terminal of the battery 8, and the negative terminal is directly connected to the negative terminal of the battery 8. An insulating protective cover 25 is provided at the charging socket 24 to protect the charging socket 24.

[0096] Furthermore, the power supply device also includes a battery retaining clip 26, which is used to secure the battery 8. The battery retaining clip 26 is a U-shaped plastic clip with two round holes at each end for inserting retaining screws to secure the battery 8.

[0097] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A winding circuit detection method, wherein the winding circuit comprises a plurality of connection terminals and a plurality of winding core wires, wherein the plurality of connection terminals and the plurality of winding core wires are connected in series to form a plurality of winding coils, and the plurality of winding core wires are bundled into a winding cable, wherein: Based on a clamp ammeter and a power supply device, the power supply device is used to provide an adjustable current and display the current value, and the detection method includes: S20: Clamp the clamp ammeter on the winding cable so that when the direction of the current passing through the winding cable is the theoretical current direction, the clamp ammeter displays a positive number, wherein the theoretical current direction is the current direction when the winding line is correctly connected according to the wiring diagram; S30: Connect the positive electrode of the power supply device to the starting end of the winding core wire and the negative electrode to the end of the winding core wire, so as to energize at least one of the winding coils, and determine the number a of the energized winding coils, wherein the starting end of the winding core wire is an end where theoretical current flows into the winding core wire, and the end of the winding core wire is an end where theoretical current flows out of the winding core wire; S40: Selecting the function gear of the clamp ammeter to be the DC current measurement gear and performing zero adjustment; S50: adjusting the power supply device so that the current value displayed by the power supply device is A1; S60: Observe the displayed value A2 of the clamp ammeter. If there is no displayed value, it means that at least one of the energized winding coils has a breakpoint. At this time, execute step S61: check all the energized winding coils one by one until the fault point is found; if there is a displayed value, execute step S70; S70: Determine the size of A2 and a*A1. If they are equal, it means that all the energized winding core wires are connected correctly; if they are less than, it means that at least one of the energized winding core wires is connected in reverse. At this time, execute step S71: check all the energized winding coils one by one until the fault point is found; S80: Continue to execute steps S30-S70 until all the winding coils are energized.

2. The winding line detection method according to claim 1, characterized in that: In the step S61, all the energized winding coils are checked one by one, including: S62: Connecting the positive electrode and the negative electrode of the power supply device to the beginning and the end of one of the winding core wires respectively, so that the corresponding winding coil is energized; S63: Observe whether the clamp ammeter displays a value. If so, it indicates that there is no breakpoint in the corresponding winding coil. If not, it indicates that a breakpoint appears in the corresponding winding coil.

3. The winding line detection method according to claim 1, characterized in that: In step S71, all the energized winding coils are checked one by one, including: S72: Connecting the positive electrode and the negative electrode of the power supply device to the beginning and the end of one of the winding core wires respectively, so that the corresponding winding coil is energized; S73: Observe the displayed value of the clamp ammeter. If it is positive, it means that the corresponding winding core wire is connected correctly. If it is negative, it means that the corresponding winding core wire is connected in reverse.

4. The winding line detection method according to claim 1, characterized in that: Before step S20, the method further includes obtaining a theoretical magnetic field direction and a theoretical current direction of the winding line according to a wiring diagram of the winding line.

5. The winding line detection method according to claim 1, characterized in that: The power supply device can also be used to perform a low voltage alarm, and before step S50, it also includes: S51: Observe whether the power supply device issues a low voltage alarm. If so, execute step S52: charge the power supply device.

6. A power supply device used in the winding line detection method according to any one of claims 1 to 5, characterized in that: The power supply device includes a battery, an adjustable power control board, a wiring unit, a current regulating unit, a current monitoring and display unit, and a low-voltage alarm unit. The battery is used to provide the power required for the power supply device to work. The adjustable power control board can be used for regulating and controlling voltage and current. The wiring unit is used to achieve electrical connection between the power supply device and the winding line. The current regulating unit is used to adjust the size of the output current. The current monitoring and display unit is used to display the size of the output current. The low-voltage alarm unit is used to alarm when the power supply device is low on power.

7. The power supply device according to claim 6, characterized in that: The wiring unit includes an output socket, a lantern plug and an alligator clip. The output socket is connected to the output end of the adjustable power control board. The lantern plug can be inserted into the output socket. The lantern plug is connected to the alligator clip through a wire. The alligator clip can be used to connect to the wiring terminal.

8. The power supply device according to claim 6, characterized in that: The power supply device further comprises a housing, on which a fixing buckle is provided, and the fixing buckle is used to clamp the housing on the winding connection box; The shell is also provided with a handle, and the handle is used to hang the shell on the winding connection box.

9. The power supply device according to claim 6, characterized in that: The power supply device also includes a charging socket, and an insulating protective cover is provided at the charging socket to protect the charging socket.

10. The power supply device according to claim 6, characterized in that: The power supply device also includes a battery fixing clamp, and the battery fixing clamp is used to fix the battery.

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