Charging equipment and detection method of cable of charging equipment

Abstract

The invention provides charging equipment and a detection method of a cable of the charging equipment, and relates to the technical field of cable detection. According to the method, the cable is firstly driven to be twisted clockwise by the first preset number of turns and then is straightened, and circulation is performed by the first preset number of times to serve as a first twisting process. And then the cable is driven to be twisted anticlockwise for a second preset number of turns and then straightened, and circulation is performed for a second preset number of times as a second twisting process. And then judging whether the count reaches a preset value, detecting the cable when the count reaches the preset value, and if the count does not reach the preset value, continuing to execute the first twisting process and the second twisting process until the count reaches the preset value. According to the technical scheme, the situation that the cable of the charging equipment is distorted in the actual use process is fully considered, the cable is straightened after being distorted, the mechanical performance of distortion resistance of the charging equipment can be detected, the service life of the cable of the charging equipment in the actual use environment can be detected, and the service life of the cable is prolonged. Therefore, the after-sale loss of the charging gun and the cable is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and in particular to a charging device and a detection method for a cable of the charging device. Background Art

[0002] With the rapid growth of new energy electric vehicles in recent years, infrastructure development for the industry has been booming. Currently, charging station networks are being built across cities nationwide. The efficient, fast, safe, and trouble-free operation of charging stations over a long lifespan is crucial, directly impacting the maintenance costs of charging station operators.

[0003] The most prone to failure in the actual application of the entire charging pile is the charging gun connector with cable. This is because the cable, including the tail end of the gun, will be dragged, bent, stretched, etc. during the use of the charging gun. Long-term use will lead to undesirable phenomena such as broken signal and control wires in the cable, cracked sheaths, bulging and wrinkled sheaths, and loosening of the tail end of the gun. In addition, many defective cables with broken signal lines have been exposed on the market, causing a lot of economic losses and resulting in many charging piles being idle and unable to charge.

[0004] Currently, the standard test for cables only includes a ±90° left-right swing test, and the standard test for charging gun connectors only includes a ±45° left-right swing test. Both tests are sampling tests of about 1 meter, which cannot verify the mechanical strength of the charging gun connector in the actual use environment. Therefore, it is urgent to design a detection method that can test the performance of the charging gun cable during actual use. Summary of the Invention

[0005] An object of the present invention is to provide a method for detecting the cable of a charging device, so as to solve the technical problem in the prior art that the performance of the cable of the charging gun connector cannot be detected during actual use.

[0006] Another object of the present invention is to provide a charging device applied to the above detection method.

[0007] In particular, the present invention provides a method for detecting a cable of a charging device, comprising the following steps:

[0008] Pulling the charging gun of the charging device, and driving the cable of the charging device to twist clockwise a first preset number of turns and then straighten it, and repeating the first preset number of times as a first twisting process; the charging device includes the charging gun, the cable and the charging pile, and the two ends of the cable are respectively connected to the charging gun and the charging pile;

[0009] Driving the cable to twist counterclockwise for a second preset number of turns and then straighten it, and repeating the process for a second preset number of times as a second twisting process; counting once after each completion of the first twisting process and the second twisting process;

[0010] Determine whether the count reaches the preset value;

[0011] If yes, the cable is detected; if no, the first twisting process and the second twisting process are continuously performed until the count reaches the preset value.

[0012] Optionally, the step of pulling a charging gun of a charging device and driving a cable of the charging device to twist the cable clockwise for a first preset number of turns and then straighten the cable comprises:

[0013] Driving the cable to twist clockwise for a third preset number of turns and then straightening it, wherein the twisted turn diameter is a first preset value;

[0014] The cable is twisted clockwise for a fourth preset number of turns and then straightened, wherein the twisted diameter is a second preset value, the second preset value is smaller than the first preset value, and the sum of the third preset number of turns and the fourth preset number of turns is equal to the first preset number of turns.

[0015] Optionally, the step of twisting the cable counterclockwise for a second preset number of turns and then straightening the cable comprises:

[0016] Driving the cable to twist counterclockwise for a fifth preset number of turns and then straightening it, wherein the twisted turn diameter is a third preset value;

[0017] The cable is driven to twist counterclockwise for a sixth preset number of turns and then straightened, the twisted turn diameter is a fourth preset value, the fourth preset value is less than the third preset value, and the sum of the fifth preset number of turns and the sixth preset number of turns is equal to the second preset number of turns.

[0018] Optionally, the third preset value is the same as the first preset value, and the fourth preset value is the same as the second preset value.

[0019] Optionally, the third preset number of turns is the same as the first preset number of turns, and the fourth preset number of turns is the same as the second preset number of turns.

[0020] Optionally, during the twisting process of the cable, an alarm is triggered if any signal line in the cable is broken.

[0021] Optionally, the step of detecting the cable specifically includes the following steps:

[0022] Determining whether there is any defect on the surface of the cable;

[0023] If so, the cable is determined to be unqualified.

[0024] Optionally, the step of detecting the cable further includes the following steps:

[0025] Applying a preset voltage to the cable for a preset duration;

[0026] Determining whether the cable is broken down;

[0027] If so, the cable is determined to be unqualified.

[0028] Optionally, in the step of applying a preset voltage to the cable and continuing it for a preset time, a first preset voltage is applied to the main signal line and the ground line of the cable respectively and continues for a first preset time, and a second preset voltage is applied to the auxiliary power line and the signal control line of the cable respectively and continues for a second preset time.

[0029] In particular, the present invention further provides a charging device, applied to the above-mentioned detection method, comprising a charging pile, a charging gun, and a cable, wherein the cable has a first end and a second end, the first end being connected to the charging pile, and the second end being connected to the charging gun;

[0030] All the signal lines in the cable are connected in series to form a series circuit. A line break alarm device is provided at the second end. The line break alarm device is configured to sound an alarm when any of the signal lines is broken.

[0031] In the present invention, the charging gun of the charging device is first pulled, and the cable of the charging device is twisted clockwise for a first preset number of times and then straightened, and the first preset number of times is repeated as the first twisting process. Then, the cable is twisted counterclockwise for a second preset number of times and then straightened, and the second preset number of times is repeated as the second twisting process. After each completion of the first twisting process and the second twisting process, a count is performed, and then it is determined whether the count reaches the preset value. When the preset value is reached, the cable is tested. If the preset value is not reached, the first twisting process and the second twisting process are continued until the count reaches the preset value. The above technical solution fully takes into account the situation that the cable of the charging device may be twisted during actual use. The cable of the charging device is twisted and then straightened to test the mechanical properties of the charging device's resistance to twisting, and the service life of the cable of the charging device in the actual use environment can be tested, thereby reducing the after-sales loss of the charging gun and cable.

[0032] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0034] Figure 1 is a schematic flowchart of a method for detecting a cable of a charging device according to an embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of a charging device according to an embodiment of the present invention;

[0036] Figure 3 is a schematic flowchart of a method for detecting a cable of a charging device according to another embodiment of the present invention;

[0037] Figure 4 is a schematic structural diagram of a charging device according to one embodiment of the present invention when the cable is not twisted;

[0038] Figure 5 is a schematic structural diagram of a charging device cable twisted clockwise according to an embodiment of the present invention;

[0039] Figure 6 1 is a schematic structural diagram of a charging device cable twisted clockwise in a small circle according to one embodiment of the present invention;

[0040] Figure 7 is a schematic structural diagram of a charging device cable twisted clockwise with a large diameter according to one embodiment of the present invention;

[0041] Figure 8 is a schematic structural diagram of a charging device cable twisted counterclockwise according to an embodiment of the present invention;

[0042] Figure 9 1 is a schematic structural diagram of a charging device cable twisted counterclockwise in a small circle according to one embodiment of the present invention;

[0043] Figure 10 is a schematic structural diagram of a charging device cable twisted counterclockwise with a large diameter according to one embodiment of the present invention;

[0044] Reference numerals:

[0045] 100-charging equipment, 10-cables, 20-charging guns, 30-charging piles. DETAILED DESCRIPTION

[0046] Figure 1 is a schematic flow chart of a method for detecting a cable 10 of a charging device 100 according to an embodiment of the present invention. Figure 2 FIG is a schematic structural diagram of a charging device 100 according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, in a specific embodiment, the detection method of the cable 10 of the charging device 100 includes the following steps:

[0047] Step S100: Pulling the charging gun 20 of the charging device 100 causes the cable 10 of the charging device 100 to twist clockwise a first preset number of times before straightening, and repeating the first preset number of times as a first twisting process; the charging device 100 includes the charging gun 20, the cable 10, and the charging pile 30, with both ends of the cable 10 connected to the charging gun 20 and the charging pile 30, respectively;

[0048] Step S200: driving the cable 10 to twist counterclockwise for a second preset number of turns and then straightening it, and repeating the second preset number of times as a second twisting process; counting is performed each time the first twisting process and the second twisting process are completed;

[0049] Step S300, determining whether the count reaches a preset value; if so, executing step S400; if not, continuing to execute the first twisting process and the second twisting process until the count reaches the preset value, that is, returning to step S100;

[0050] Step S400 : Detecting the cable 10 .

[0051] This embodiment fully takes into account the possibility that the cable 10 of the charging device 100 may be twisted during actual use. By performing a twisted and then straightened test on the cable 10 of the charging device 100, the mechanical properties of the charging device 100 against twisting can be tested, and the service life of the cable 10 of the charging device 100 under actual use conditions can be tested, thereby reducing after-sales losses of the charging gun 20 and the cable 10.

[0052] In step S100, the first preset number of turns can be one turn or multiple turns. The length of the cable 10 of the charging device 100 is greater than 4m and less than 7.5m. It should be noted that straightening means pulling the cable 10 until the cable 10 is completely off the ground. The first preset number of times can be 1 time, 2 times, 3 times or 4 times, etc. When the first preset number of times is 3 times, it means that the cable 10 needs to be twisted clockwise for the first preset number of turns and then straightened, and the cycle is repeated 3 times. This entire step is regarded as the first twisting process.

[0053] In step S200, the second preset number of turns can be one turn or multiple turns, for example, three turns. The second preset number of turns can be one, two, three, or four times. When the second preset number of turns is three, it means that the cable 10 needs to be twisted counterclockwise for the second preset number of turns and then straightened, and this cycle is repeated three times. This entire step is considered the second twisting process.

[0054] In step S300, the preset value may be 800 times, 900 times, or 1000 times. In other embodiments, the preset value may also be determined according to specific design requirements.

[0055] Figure 3 is a schematic flow chart of a detection method for a cable 10 of a charging device 100 according to another embodiment of the present invention. Figure 4 is a schematic structural diagram of a charging device 100 according to an embodiment of the present invention when the cable 10 is not twisted. Figure 5 1 is a schematic structural diagram of a charging device 100 with a cable 10 twisted clockwise according to an embodiment of the present invention. Figure 6 1 is a schematic structural diagram of a charging device 100 with a cable 10 twisted clockwise in a small circle according to an embodiment of the present invention. Figure 7 1 is a schematic structural diagram of a charging device 100 with a cable 10 twisted clockwise in a large circle according to an embodiment of the present invention. Figure 8 1 is a schematic structural diagram of a charging device 100 with a cable 10 twisted counterclockwise according to an embodiment of the present invention. Figure 9 1 is a schematic structural diagram of a charging device 100 with a cable 10 twisted in a small circle in a counterclockwise direction according to an embodiment of the present invention. Figure 5 and Figure 8 The arrow in the middle indicates the twisting direction of the cable. Figures 3 to 9 As shown, in another embodiment, step S100 specifically includes the following steps:

[0056] Step S110, driving the cable 10 to twist clockwise for a third preset number of turns and then straightening it, wherein the twisted turn diameter is a first preset value;

[0057] Step S120: drive the cable 10 to twist clockwise for a fourth preset number of turns and then straighten it, wherein the twisted diameter is a second preset value, the second preset value is smaller than the first preset value, and the sum of the third preset number of turns and the fourth preset number of turns is equal to the first preset number of turns.

[0058] This embodiment performs a torsion test on the cable 10 with different coil diameters, thereby performing a more comprehensive torsion test on the cable 10 , thereby improving the accuracy of the performance test of the cable 10 .

[0059] Here, it should be noted that the first preset number of cycles is to execute and repeat step S110 and step S120 as a whole.

[0060] In other embodiments, the second preset value may be set to be greater than the first preset value. This may be understood as first performing twisting with a small diameter and then performing twisting with a large diameter.

[0061] In steps S110 and S120, the second preset value may be 20 cm, 21 cm, or 22 cm, and the first preset value may be 30 cm, 31 cm, or 32 cm, etc. The third preset number of turns may be two turns, the fourth preset number of turns may also be two turns, and the first preset number of turns may be four turns. In other embodiments, the third preset number of turns may be different from the fourth preset number of turns, for example, it may be greater than or less than the fourth preset number of turns.

[0062] In some embodiments, step S200 specifically includes:

[0063] Step S210, driving the cable 10 to twist counterclockwise for a fifth preset number of turns and then straightening it, wherein the twisted turn diameter is a third preset value;

[0064] Step S220: drive the cable 10 to twist the sixth preset number of turns counterclockwise and then straighten it, the twisted diameter is the fourth preset value, the fourth preset value is less than the third preset value, and the sum of the fifth preset number of turns and the sixth preset number of turns is equal to the second preset number of turns.

[0065] Here, it should be noted that the second preset number of cycles is to execute and repeat step S210 and step S220 as a whole.

[0066] In steps S210 and S220, the fourth preset value may be 20 cm, 21 cm, or 22 cm, etc., and the third preset value may be 30 cm, 31 cm, or 32 cm, etc. The fifth preset number of turns may be two turns, the sixth preset number of turns may also be two turns, and the second preset number of turns may be four turns. In other embodiments, the fifth preset number of turns may be different from the sixth preset number of turns, for example, it may be greater than or less than the sixth preset number of turns.

[0067] In some embodiments, the third preset value is the same as the first preset value, and the fourth preset value is the same as the second preset value. For example, the third preset value and the first preset value are both 30 cm, and the fourth preset value and the second preset value are both 20 cm.

[0068] In some embodiments, the third preset number of turns is the same as the first preset number of turns, and the fourth preset number of turns is the same as the second preset number of turns. For example, the third preset number of turns and the first preset number of turns are both two turns, and the fourth preset number of turns and the second preset number of turns are both two turns.

[0069] In some embodiments, an alarm is triggered if any signal line in the cable 10 breaks during the twisting process. This means that during the twisting test, if a problem with the cable 10 occurs, for example, a signal line may break after 200 cycles, and subsequent cycles can be skipped, saving testing time. The alarm can be triggered by an alarm device or indicator light.

[0070] In some embodiments, see Figure 2 , step S400 specifically includes the following steps:

[0071] Step S410, determining whether there is any defect on the surface of the cable 10; if so, executing step S440; if not, executing step S420;

[0072] Step S420, applying a preset voltage to the cable 10 for a preset duration;

[0073] Step S430, determining whether the cable 10 is broken down; if so, executing step S440; if not, executing step S450;

[0074] Step S440, determining that the cable 10 is unqualified;

[0075] Step S450: determine whether the cable 10 is qualified.

[0076] In step S410 , the surface defects of the cable 10 include cracks, bulges, wrinkles, looseness, etc. of the cable 10 .

[0077] This embodiment can detect, through the above detection steps, undesirable phenomena such as disconnection of the signal line of the cable 10 of the charging device 100, cracking, bulging and wrinkling of the cable 10, and looseness of the connection at the tail end of the charging gun 20 during long-term use.

[0078] In some embodiments, during the step of applying a preset voltage to the cable 10 for a preset duration, a first preset voltage is applied to the main signal line and ground line of the cable 10 for a first preset duration, and a second preset voltage is applied to the auxiliary power line and signal control line of the cable 10 for a second preset duration. Here, the first preset voltage is DC 8.4 kV, the first preset duration is 15 minutes, and the second preset voltage is DC 3.6 kV, the second preset duration is 15 minutes. This embodiment distinguishes the signal lines of the cable 10 and performs tests at different voltages.

[0079] During the test, the signal wires in the cable 10 were not completely broken, and the wire breakage rate was ≤5%. There should be no cracks or cracks on the surface of the cable sheath and the insulating core wire, and the liquid cooling tube of the cable with a liquid cooling tube should not be broken. In addition, the tail of the charging gun 20 and the entire cable 10 should not have any undesirable phenomena such as wrinkles and bulging of the sheath. After the test, the cable 10 is subjected to a voltage withstand test and is required to be non-punctured. If the cable 10 meets the above conditions, it is considered that the cable 10 is qualified. If the cable 10 does not meet any of the above conditions, it is considered that the cable 10 is unqualified.

[0080] Figure 101 is a schematic structural diagram of a charging device 100 with a cable 10 twisted counterclockwise with a large diameter according to an embodiment of the present invention. Figure 10 As shown, this embodiment further provides a charging device 100, which is applied to the detection method of any of the above embodiments. The charging device 100 includes a charging pile 30, a charging gun 20, and a cable 10. The cable 10 has a first end and a second end. The first end is connected to the charging pile 30, and the second end is connected to the charging gun 20. All signal lines in the cable 10 are connected in series to form a series circuit. A line break alarm device is provided at the second end. The line break alarm device is configured to sound an alarm when any signal line is broken.

[0081] See also Figure 2 In some embodiments, the length of the cable 10 of the charging device 100 is greater than 4 meters and less than 7.5 meters. The cable 10, along with its sheath, is secured to a 1.2-1.5-meter-high charging pile 30 on a concrete floor. This moves the charging plug 20, simulating the plug-in and plug-out process.

[0082] This embodiment designs a detection method for the cable 10 of the charging device 100. The detection method fully considers the conditions that exist during actual use of the cable 10 of the charging device 100, simulates the service life of the cable 10 of the charging device 100 in the actual use environment, fully tests the torsion resistance of the charging gun 20 and the cable 10, and reduces after-sales losses of the charging gun 20 and the cable 10.

[0083] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A method for detecting a cable of a charging device, characterized in that: The following steps are involved: Pulling the charging gun of the charging device, and driving the cable of the charging device to twist clockwise a first preset number of turns and then straighten it, and repeating the first preset number of times as a first twisting process; the charging device includes the charging gun, the cable and the charging pile, and the two ends of the cable are respectively connected to the charging gun and the charging pile; Driving the cable to twist counterclockwise for a second preset number of turns and then straighten it, and repeating the process for a second preset number of times as a second twisting process; counting once after each completion of the first twisting process and the second twisting process; Determine whether the count reaches the preset value; If yes, the cable is detected; if no, the first twisting process and the second twisting process are continuously performed until the count reaches the preset value.

2. The detection method according to claim 1, wherein The step of pulling a charging gun of a charging device and driving a cable of the charging device to twist the cable clockwise for a first preset number of turns and then straighten the cable comprises: Driving the cable to twist clockwise for a third preset number of turns and then straightening it, wherein the twisted turn diameter is a first preset value; The cable is twisted clockwise for a fourth preset number of turns and then straightened, wherein the twisted diameter is a second preset value, the second preset value is smaller than the first preset value, and the sum of the third preset number of turns and the fourth preset number of turns is equal to the first preset number of turns.

3. The detection method according to claim 2, characterized in that The step of twisting the cable counterclockwise for a second preset number of turns and then straightening the cable comprises: Driving the cable to twist counterclockwise for a fifth preset number of turns and then straightening it, wherein the twisted turn diameter is a third preset value; The cable is driven to twist counterclockwise for a sixth preset number of turns and then straightened, the twisted turn diameter is a fourth preset value, the fourth preset value is less than the third preset value, and the sum of the fifth preset number of turns and the sixth preset number of turns is equal to the second preset number of turns.

4. The detection method according to claim 3, characterized in that The third preset value is the same as the first preset value, and the fourth preset value is the same as the second preset value.

5. The detection method according to claim 3, characterized in that The third preset number of turns is the same as the first preset number of turns, and the fourth preset number of turns is the same as the second preset number of turns.

6. The detection method according to any one of claims 1 to 5, characterized in that During the twisting process of the cable, if any signal line in the cable is broken, an alarm is triggered.

7. The detection method according to any one of claims 1 to 5, characterized in that The step of testing the cable specifically includes the following steps: Determining whether there is any defect on the surface of the cable; If so, the cable is determined to be unqualified.

8. The detection method according to claim 7, characterized in that The step of detecting the cable further includes the following steps: Applying a preset voltage to the cable for a preset duration; Determining whether the cable is broken down; If so, the cable is determined to be unqualified.

9. The detection method according to claim 8, characterized in that In the step of applying a preset voltage to the cable and continuing it for a preset time, a first preset voltage is applied to the main signal line and the ground line of the cable respectively and continues for a first preset time, and a second preset voltage is applied to the auxiliary power line and the signal control line of the cable respectively and continues for a second preset time.

10. A charging device, applied to the detection method according to any one of claims 1 to 9, characterized in that: The device comprises a charging pile, a charging gun and a cable, wherein the cable has a first end and a second end, the first end is connected to the charging pile, and the second end is connected to the charging gun; All the signal lines in the cable are connected in series to form a series circuit. A line break alarm device is provided at the second end. The line break alarm device is configured to sound an alarm when any of the signal lines is broken.

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