A device for detecting the wiring quality of energy storage converter components

Abstract

The present invention discloses a device for detecting the wiring quality of an energy storage converter device, and belongs to the field of wiring detection technology. It includes a power supply, a switch assembly, a relay and a status indicator light; the switch assembly includes a plurality of switches, each switch is respectively connected to a plurality of relays, and the relays connected to the same switch respectively correspond to the same device in different energy storage converters; the auxiliary contact of each relay is connected to the closing coil of the corresponding energy storage converter device, and the auxiliary contact of the closing coil is connected to the corresponding status indicator light; the power supply is respectively connected to the switch, the status indicator light and the energy storage converter device. The present invention drives the coils of a plurality of relays to close by a switch to drive the device to move, thereby driving the status indicator light, realizing the detection of whether the wiring of the corresponding energy storage converter device is correct, and then observing the state of the device through the status indicator light, realizing the simultaneous detection of the wiring quality of the devices in a plurality of energy storage converters.

Description

Technical Field

[0001] The invention belongs to the technical field of wiring detection, and in particular relates to a device for detecting the wiring quality of an energy storage converter device. Background Art

[0002] The energy storage inverter is an inverter in the electrochemical energy storage system that is connected between the battery system and the power grid (and / or load) to achieve bidirectional conversion of electric energy. It is an integrated device that includes devices and wiring.

[0003] After completing the wiring work of the energy storage inverter, the wiring correctness needs to be checked. When performing wiring inspection, the line measurement method of buzzer inspection is often used. However, the traditional buzzer detection of wiring quality has the production defects of low efficiency and high error rate of manual inspection. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a device for detecting the wiring quality of energy storage converter components, so as to realize simultaneous detection of the wiring quality of components of several energy storage converters and improve the inspection efficiency.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0006] The present invention provides a device for detecting the wiring quality of an energy storage converter device, comprising a power supply, a switch component, a relay and a status indicator light;

[0007] The switch assembly includes a plurality of switches, each switch is connected to a plurality of relays, and the relays connected to the same switch correspond to the same device in different energy storage converters;

[0008] The auxiliary contact of each relay is connected to the closing coil of the corresponding energy storage converter device, and the auxiliary contact of the closing coil is connected to the corresponding status indicator light;

[0009] The power supply is respectively connected with the switch, the status indicator light and the energy storage converter device.

[0010] When the present invention is used, a switch drives the coils of several relays to close, so as to drive the closing coils of the same device in different energy storage inverters to close, thereby driving the energy storage inverter device to drive the status indicator light to detect whether the wiring of the device in the corresponding energy storage inverter is correct, and then the status of the device is observed through the status indicator light, so as to realize the simultaneous detection of the wiring quality of the devices in several energy storage inverters.

[0011] As an optional technical solution of the present invention, the power supply includes a first power supply and the second power supply , the energy storage converter comprises a first energy storage converter and the second energy storage converter ;

[0012] The switch includes The first switch , Second switch ,…,No. switch ;

[0013] The relays include n relays, which are first relays , Second relay , ..., nth relay ;

[0014] The relay includes n auxiliary contacts, which are respectively the first relay Auxiliary contacts, second relay Auxiliary contacts of, ..., nth relay Auxiliary contacts;

[0015] The energy storage converter device includes n closing coils, which are respectively the first closing coil , Second closing coil , the third closing coil , the fourth closing coil , ..., n-1th closing coil and the nth closing coil ;

[0016] The auxiliary contacts of the closing coil include n, which are respectively the first closing coil Auxiliary contacts, second closing coil Auxiliary contacts, third closing coil Auxiliary contacts, fourth closing coil Auxiliary contacts, ..., the n-1th closing coil Auxiliary contacts and the nth closing coil Auxiliary contacts;

[0017] The status indicator lights include n, respectively, a first status indicator light , Second status indicator , ..., nth status indicator ;in, .

[0018] As an optional technical solution of the present invention, the first power supply connected to both ends of the switch, and used to provide power to the relay connected to the switch;

[0019] The said switch Respectively with the n-1th relay and the nth relay Connect the n-1th relay The auxiliary contact and the n-1 closing coil connection, the nth relay The auxiliary contact and the nth closing coil Connect the n-1th closing coil Auxiliary contacts and n-1 status indicator lights Connect the nth closing coil Auxiliary contacts and nth status indicator connect;

[0020] The two ends of the status indicator light are connected to the second power supply connect.

[0021] As an optional technical solution of the present invention, the power supply is an industrial frequency AC power supply;

[0022] Connecting the phase line and the neutral line of the detection device to output AC power;

[0023] The AC power source is connected to a second power source The AC power supply and the DC power supply are connected to output a DC power supply, and the AC power supply and the DC power supply are used as power supplies for the energy storage converter device.

[0024] As an optional technical solution of the present invention, when the energy storage converter device is a wind turbine, the DC power supply is used as the power supply of the PWM speed regulation module;

[0025] A resistor is connected in series in the input circuit of the PWM speed regulating module, and the output of the PWM speed regulating module is used as the power supply of the fan. It can provide a suitable PWM speed regulating power supply for the fan, save the DC power supply installation cost of the detection device, and simulate the operating conditions of the fan to check the wiring quality of the fan.

[0026] As an optional technical solution of the present invention, the status indicator lights include several status indicator lights, each of which is connected to the auxiliary contact of the closing coil of the corresponding energy storage converter device to indicate the status of the energy storage converter device.

[0027] As an optional technical solution of the present invention, the normally open auxiliary contact of each relay is connected to the closing coil of the corresponding energy storage converter device, and the normally open auxiliary contact of the closing coil is connected to the corresponding status indicator light.

[0028] As an optional technical solution of the present invention, it also includes a device body; the front side surface and the upper table surface of the device body are both provided with operation panels.

[0029] As an optional technical solution of the present invention, the switch assembly and the status indicator light are respectively arranged on the operation panel.

[0030] As an optional technical solution of the present invention, the relay is arranged inside the device body.

[0031] As an optional technical solution of the present invention, a terminal connector is provided on the outside of the device body, and the relay and the status indicator light are respectively connected to the corresponding energy storage converter device through the terminal connector.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The device for detecting the wiring quality of energy storage converter devices provided by the present invention drives the coils of several relays to be attracted by a switch, so as to drive the closing coils of devices in different energy storage converters to be closed, so as to drive the devices to operate, thereby driving the status indicator light, and realizing the detection of whether the wiring of the corresponding energy storage converter devices is correct, and then observing the status of the device through the status indicator light, so as to realize the simultaneous detection of the wiring quality of several energy storage converter devices, improve the inspection efficiency, and reduce the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The figure shows a functional principle diagram of a detection device detecting two energy storage converter devices in one embodiment of the present invention;

[0035] Figure 2 The figure shows a schematic diagram of the principle of one switch controlling two relays at the same time in one embodiment of the present invention;

[0036] Figure 3 The figure shows a schematic diagram of the principle of two relays controlling the actions of AC circuit breakers in two energy storage converters respectively in one embodiment of the present invention;

[0037] Figure 4 The figure shows a schematic diagram of the principle of the control status indicator lights of the closing coils of the AC circuit breakers in two energy storage converters in one embodiment of the present invention;

[0038] Figure 5 Shown is a schematic diagram of the principle of one switch controlling two relays simultaneously in another embodiment of the present invention;

[0039] Figure 6 The figure shows a schematic diagram of the principle of two relays controlling the fan control contactors in two energy storage converters respectively in one embodiment of the present invention;

[0040] Figure 7 The figure shows a schematic diagram of the control status indicator lights of the fan control contactors in two energy storage converters in one embodiment of the present invention;

[0041] Figure 8 The figure shows a schematic diagram of the principle of controlling fans by fan control contactors in two energy storage converters in one embodiment of the present invention;

[0042] Fig. 9 The figure shows a schematic structural diagram of a device body in one embodiment of the present invention;

[0043] The following are marked in the figure: 1. Device body; 2. Operation panel. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0047] Example 1

[0048] This embodiment is for energy storage converters, and its core control device is not installed in the outsourced production unit to ensure the security and confidentiality of core technical information.

[0049] Among them, the external interface of the energy storage converter related control device is connected to the line measurement device to carry out local electrical testing, thereby improving the efficiency and accuracy of the line measurement.

[0050] This embodiment provides a device for detecting the wiring quality of an energy storage converter device, which can perform a local electrical test to detect the wiring quality, such as Fig. 9 As shown, it includes a switch, a relay, a status indicator light, a power supply and a device body 1.

[0051] like Figure 1 As shown, the power supply includes a first power supply and the second power supply , the first power supply and the second power supply The input is an industrial frequency AC power supply, and the output is a DC power supply. The energy storage converter includes a first energy storage converter and the second energy storage converter ;

[0052] The switch includes The first switch , Second switch ,…,No. switch ;

[0053] The relays include n relays, which are first relays , Second relay , ..., nth relay ;

[0054] The relay includes n auxiliary contacts, which are respectively the first relay Auxiliary contacts, second relay Auxiliary contacts of, ..., nth relay Auxiliary contacts;

[0055] The energy storage converter device includes n closing coils, which are respectively the first closing coil , Second closing coil , the third closing coil , the fourth closing coil , ..., n-1th closing coil and the nth closing coil ;

[0056] The auxiliary contacts of the closing coil include n, which are respectively the first closing coil Auxiliary contacts, second closing coil Auxiliary contacts, third closing coil Auxiliary contacts, fourth closing coil Auxiliary contacts, ..., the n-1th closing coil Auxiliary contacts and the nth closing coil Auxiliary contacts;

[0057] The status indicator lights include n, respectively, a first status indicator light , Second status indicator , ..., nth status indicator ;in, .

[0058] The first power supply The two ends of the status indicator light are connected to the second power supply. connect.

[0059] In a first specific embodiment, the first switch Respectively with the first relay and the second relay Connect the first relay The auxiliary contact and the first closing coil Connect the second relay The auxiliary contact and the second closing coil Connect the first closing coil Auxiliary contacts and first status indicator Connect the second closing coil Auxiliary contacts and second status indicator connect.

[0060] In a second specific embodiment, the second switch The third relay and the fourth relay Connect the third relay The auxiliary contacts and the third closing coil Connect the fourth relay The auxiliary contact and the fourth closing coil Connect the third closing coil Auxiliary contacts and third status indicator Connect the fourth closing coil Auxiliary contacts and fourth status indicator connect.

[0061] In the nth specific embodiment, the switch Respectively with the n-1th relay and the nth relay Connect the n-1th relay The auxiliary contact and the n-1 closing coil connection, the nth relay The auxiliary contact and the nth closing coil Connect the n-1th closing coil Auxiliary contacts and n-1 status indicator lights Connect the nth closing coil Auxiliary contacts and second status indicator connect.

[0062] In this embodiment, the first closing coil Indicates the first energy storage converter Closing coil and second closing coil of AC circuit breaker Represents the second energy storage converter Closing coil of AC circuit breaker; third closing coil Indicates the first energy storage converter Closing coil and fourth closing coil of the blower control contactor Represents the second energy storage converter Closing coil of the fan control contactor; ...; the n-1th closing coil Indicates the first energy storage converter Closing coil and fourth closing coil of DC circuit breaker Represents the second energy storage converter Closing coil of the DC circuit breaker.

[0063] The normally open auxiliary contact of each relay is connected to the closing coil of the corresponding energy storage inverter device, and the normally open auxiliary contact of the closing coil is connected to the corresponding status indicator light. Each relay connected to the same switch is used to detect the wiring quality of the same device in an energy storage inverter, and each switch detects the wiring quality of a functional device of the energy storage inverter.

[0064] Connect the phase line of the detection device to the neutral line to output AC power; connect the AC power to the second power supply The AC power supply and the DC power supply are connected to output a DC power supply, and the AC power supply and the DC power supply are used as the power supply of the energy storage converter device. Alternatively, other external DC power supplies are used to output the power required by related devices to the energy storage converter.

[0065] In this embodiment, the power supply of the detection device is a 380V industrial frequency AC power supply, which outputs a 220V AC power supply by connecting its phase line and neutral line, and then outputs a 24V DC power supply through a 220V AC to 24V DC power supply module. In this way, the device outputs the power required by related devices to the energy storage inverter.

[0066] When the energy storage converter device is a wind turbine, the DC power supply is used as the power supply of the PWM speed regulation module;

[0067] A resistor is connected in series in the input loop of the PWM speed regulating module, and the output of the PWM speed regulating module is used as the power supply of the fan. The fan may be an EC fan.

[0068] In this embodiment, when the detection device uses a 24V DC power supply to provide power for the PWM speed regulation module, a 200kΩ resistor is connected in series in the input circuit of the PWM speed regulation module to provide a 9V PWM speed regulation power supply for the EC fan in the energy storage inverter, which can save the installation cost of the 10V DC power supply of the line measurement device, and at the same time simulate the operating conditions of the fan to check the wiring quality of the EC fan.

[0069] Take the fan internal resistance of 120 kΩ as an example:

[0070] The required PWM speed regulation voltage of the fan is 0-10V; the internal resistance of the fan PWM circuit is about 120 kΩ as measured by a multimeter.

[0071] A resistor is connected in series in the input circuit of the PWM speed control module to divide the voltage so that the fan input is about 10V, that is, the fan divided voltage = 120 / (200+120)X24V=9V.

[0072] Each status indicator light is connected to the auxiliary contact of the closing coil of the corresponding energy storage converter device, and is used to indicate the status of the energy storage converter device. In this embodiment, one status indicator light corresponds to indicating the connection status of one device in one energy storage converter.

[0073] When this embodiment is used, two relays are controlled to be energized through one switch in the detection device, and the auxiliary contacts of the corresponding relays perform a closing action, driving the closing coil of the energy storage inverter device to be energized, operating the same device in the two energy storage inverters, and the auxiliary contacts of the closing coil are closed, driving the status indicator light to operate. At this time, the internal status indicator light of the detection device is connected to the closing coil of the functional device to perform a lighting action.

[0074] like Figure 2-4 As shown, in a specific embodiment, as Figure 2 In the detection device shown, one switch controls two relays to be energized. Figure 3 The relay coils of the circuit breakers in the two energy storage converters are energized, and the circuit breakers perform the closing action, such as Figure 4 The normally open auxiliary contact of the circuit breaker is closed. At this time, the internal status indicator light of the detection device is connected to the normally open auxiliary contact of the circuit breaker, the indicator light is on, and the whole process is normal, indicating that the relevant wiring of the circuit breaker is correct; otherwise it is abnormal.

[0075] like Figure 5-8 As shown, in another specific embodiment, as Figure 5 In the detection device shown, one switch controls two relays to be energized. Figure 6 The operation shown in the figure energizes the fan start / stop relay coils in the two energy storage converters, and the fan control contactor performs the closing action, such as Figure 7 The normally open auxiliary contact of the fan control contactor is closed, and the fan rotates with power. Figure 8 The normally open auxiliary contacts of the fan control contactor shown are closed. At this time, the internal status indicator light of the detection device is connected to the normally open auxiliary contacts of the fan control contactor, and the indicator light is on. The whole process is normal, indicating that the fan-related wiring is correct; otherwise it is abnormal.

[0076] And so on.

[0077] The device body 1 is as follows Figure 4 The front side and the upper surface of the device body 1 are both provided with an operation panel 2.

[0078] The switch assembly and the status indicator light are respectively arranged on the operation panel 2. The relay is arranged inside the device body 1.

[0079] A terminal connector is provided on the outside of the device body 1, and the relay and the status indicator light are respectively connected to the corresponding energy storage converter device through the terminal connector.

[0080] Example 2

[0081] Based on Example 1, this example introduces an example in which a detection device simultaneously detects the connection quality of components in two energy storage converters.

[0082] In this embodiment, the switch assembly includes a plurality of switches, and each switch is connected to two relays. Each relay connected to the same switch is used to detect the wiring quality of a device of an energy storage inverter, and each switch corresponds to detecting the wiring quality of a device of the energy storage inverter. The power supply of the detection device is a 380V industrial frequency AC power supply, which outputs a 220V AC power supply through its phase line and neutral line connection, and then outputs a 24V DC power supply through a 220V AC to 24V DC power supply module. In this way, the device outputs the power required by the relevant devices to the energy storage inverter. In this embodiment, the second power supply can be connected to the Convert it into DC power or output the power required by related devices to the energy storage converter through other external DC power sources.

[0083] In this embodiment, the working principle of the detection device is further explained by taking the detection of the wiring quality of the AC circuit breaker and the fan in the energy storage converter as an example. The process of detecting other functional circuits in the energy storage converter is similar and will not be repeated here.

[0084] Check the wiring quality of the AC circuit breaker in the energy storage converter:

[0085] like Figure 2 As shown, switch S1 is closed and the relay and The coil is energized; Figure 3 As shown, the relay and The normally open auxiliary contacts of the two energy storage converters are closed. and The closing coil of the two energy storage converters is energized and the AC circuit breakers and Closing; Figure 4 As shown, the AC circuit breakers of the two energy storage converters and The normally open auxiliary contact of the closing coil is closed, and the status indicator light and status indicator If it lights up, it means the wiring of the AC circuit breakers of the two energy storage converters is normal; otherwise it is abnormal.

[0086] Check the quality of fan wiring in the energy storage converter and control the start and stop of the fan:

[0087] When the detection device uses a 24V DC power supply to provide power for the PWM speed regulation module, a 200kΩ resistor is connected in series in the input circuit of the PWM speed regulation module to provide a 9V PWM speed regulation power supply for the EC fan in the energy storage inverter, which can save the installation cost of the 10V DC power supply for the line measurement device, and at the same time simulate the operating conditions of the fan to check the wiring quality of the EC fan.

[0088] Take the fan internal resistance of 120 kΩ as an example:

[0089] The required PWM speed regulation voltage of the fan is 0-10V; the internal resistance of the fan PWM circuit is about 120 kΩ as measured by a multimeter.

[0090] A resistor is connected in series in the input circuit of the PWM speed control module to divide the voltage so that the fan input is about 10V, that is, the fan divided voltage = 120 / (200+120)X24V=9V.

[0091] like Figure 5 As shown, switch S2 is closed and the relay and The coil is energized; Figure 6 As shown, the relay and The normally open auxiliary contacts of the two energy storage converters are closed, and the fan control contactors of the two energy storage converters are closed. and The closing coil is energized, and the fan control contactors of the two energy storage converters are and charged; Figure 7 As shown, the fan control contactors of the two energy storage converters and The normally open auxiliary contact of the closing coil is closed, and the status indicator light and status indicator If it lights up, it means the fan wiring is good. Figure 8 As shown, two energy storage converter fans M1 and M2 are started.

[0092] Example 3

[0093] Based on Examples 1 and 2, this example introduces a process of performing a local electrical test to detect wiring quality before debugging the entire energy storage converter, specifically including:

[0094] Step 1: The assembly and wiring of the outsourced energy storage converter is completed, but its core control device is not installed in the outsourced production unit to ensure the security and confidentiality of the core technical information;

[0095] Step 2: Check the correctness of the polarity of the energy storage converter power supply to prevent damage to the energy storage converter components during power-on;

[0096] Step 3: Conduct wiring quality testing, using the testing device described in Example 1 or 2. In this embodiment, two energy storage converters are connected to the input and output terminal interfaces, and a local electrical test is performed to detect the correctness of the wiring of the energy storage converter.

[0097] Step 4: Determine whether the test results are qualified. If qualified, record the test process, issue a test report, and transfer it for function debugging; if unqualified, analyze the cause of the abnormality, correct the energy storage inverter wiring, and then re-perform local electrical inspection tests.

[0098] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for detecting the wiring quality of an energy storage converter device, characterized in that: Includes power supply, switch assembly, relay and status indicator light; The switch assembly includes a plurality of switches, each switch is connected to a plurality of relays, and the relays connected to the same switch correspond to the same device in different energy storage converters; The auxiliary contact of each relay is connected to the closing coil of the corresponding energy storage converter device, and the auxiliary contact of the closing coil is connected to the corresponding status indicator light; The power supply is respectively connected to the switch, the status indicator light and the energy storage converter device; The power supply includes a first power supply and the second power supply , the energy storage converter comprises a first energy storage converter and the second energy storage converter ; The switch includes The first switch , Second switch ,…,No. switch ; The relays include n, respectively, the first relay , Second relay , ..., nth relay ; The relay has n auxiliary contacts, which are respectively the first relay Auxiliary contacts, second relay Auxiliary contacts of, ..., nth relay Auxiliary contacts; The energy storage converter device includes n closing coils, which are respectively the first closing coil , Second closing coil , the third closing coil , the fourth closing coil , ..., n-1th closing coil and the nth closing coil ; The auxiliary contacts of the closing coil include n, which are respectively the first closing coil Auxiliary contacts, second closing coil Auxiliary contacts, third closing coil Auxiliary contacts, fourth closing coil Auxiliary contacts, ..., the n-1th closing coil Auxiliary contacts and the nth closing coil Auxiliary contacts; The status indicator lights include n, respectively, a first status indicator light , Second status indicator , ..., nth status indicator ;in, ; The first power supply connected to both ends of the switch, and used to provide power to the relay connected to the switch; The said switch Respectively with the n-1th relay and the nth relay Connect the n-1th relay The auxiliary contact and the n-1 closing coil connection, the nth relay The auxiliary contact and the nth closing coil Connect the n-1th closing coil Auxiliary contacts and n-1 status indicator lights Connect the nth closing coil Auxiliary contacts and nth status indicator connect; The two ends of the status indicator light are connected to the second power supply connect; The power supply is an industrial frequency AC power supply; Connecting the phase line and the neutral line of the detection device to output AC power; The AC power source is connected to a second power source The AC power supply and the DC power supply are connected to output a DC power supply, and the AC power supply and the DC power supply are used as power supplies for the energy storage converter device.

2. The device for detecting the wiring quality of the energy storage converter device according to claim 1, characterized in that: When the energy storage converter device is a wind turbine, the DC power supply is used as the power supply of the PWM speed regulation module; A resistor is connected in series in the input loop of the PWM speed regulation module, and the output of the PWM speed regulation module is used as the power supply of the fan.

3. The device for detecting the wiring quality of the energy storage converter device according to claim 1, characterized in that: The normally open auxiliary contact of each relay is connected to the closing coil of the corresponding energy storage converter device, and the normally open auxiliary contact of the closing coil is connected to the corresponding status indicator light.

4. The device for detecting the wiring quality of the energy storage converter device according to claim 1, characterized in that: It also includes a device body (1); The front side surface and the upper surface of the device body (1) are both provided with an operation panel (2).

5. The device for detecting the wiring quality of the energy storage converter device according to claim 4, characterized in that: The switch assembly and the status indicator light are respectively arranged on the operation panel (2).

6. The device for detecting the wiring quality of the energy storage converter device according to claim 4, characterized in that: The relay is arranged inside the device body (1).

7. The device for detecting the wiring quality of the energy storage converter device according to claim 4, characterized in that: A terminal connector is provided on the outside of the device body (1), and the relay and the status indicator light are respectively connected to the corresponding energy storage converter device via the terminal connector.

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