CN218630014U - Charging test hardware platform - Google Patents

Abstract

The utility model discloses a charging test hardware platform, which comprises at least one power supply unit, an annular switching test unit and a control unit; the power supply unit is provided with a plurality of power supply interfaces, and the annular switching test unit comprises at least four switching test branches; the first end and the second end of one switching test branch are respectively connected with a power supply interface and a charging gun interface; a relay unit is also arranged between every two switching test branches, and one relay unit is used for connecting or disconnecting the two adjacent switching test branches; the control unit is connected with the power supply unit and the relay unit and is used for controlling the power supply unit to output specified power and controlling the specified relay unit to be switched on and off.

Description

Charging test hardware platform

Technical Field

The embodiment of the utility model provides a relate to the test technology, especially relate to a test hardware platform charges.

Background

At present, charging pile product orders are diversified day by day, different order periods are close, the process is complex, and high requirements are provided for product design and production period management in order to shorten product supply time.

In the traditional production, if a new charging pile needs to be designed and produced, a prototype is required to be manufactured, matched charging control software is debugged based on the prototype, and because the prototype is manufactured in a certain period, when the prototype cannot be provided in time, the charging control software cannot be debugged in the first time, and the finished product supply time is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a test hardware platform charges to reach and provide general hardware platform for the control software that charges, shorten the purpose that fills electric pile design production cycle.

The embodiment of the utility model provides a charging test hardware platform, which at least comprises a power supply unit, an annular switching test unit and a control unit;

the power supply unit is provided with a plurality of power supply interfaces, and the annular switching test unit comprises at least four switching test branches;

the first end and the second end of one switching test branch are respectively connected with one power supply interface and one charging gun interface;

a relay unit is also arranged between every two switching test branches, and one relay unit is used for connecting or disconnecting the two adjacent switching test branches;

the control unit is connected with the power supply unit and the relay unit, and is used for controlling the power supply unit to output specified power and controlling the specified relay unit to be switched on and off.

Optionally, the system further comprises a two-way switching test unit;

the two-way switching test unit comprises a first test branch and a second test branch;

the first test branch comprises a first relay unit, and a first end and a second end of the first relay unit are respectively connected with one power supply interface and one charging gun interface;

the second testing branch comprises a second relay unit, and a first end and a second end of the second relay unit are respectively connected with one power supply interface and one charging gun interface;

a two-way switching test relay unit is also configured between the first test branch and the second test branch and is used for connecting or disconnecting the first test branch and the second test branch;

the control unit is also connected with the first relay unit, the second relay unit and the double-path switching test relay unit.

Optionally, the test device further comprises a four-to-two test unit;

the four-to-two test unit comprises four input ports, a first output port and a second output port;

one of the input ports is connected to one of the power source ports, one of the input ports is connected to the first output port through a first switching relay unit, and one of the input ports is connected to the second output port through a second switching relay unit.

Optionally, the power supply device comprises a first power supply unit and a second power supply unit;

the first power supply unit is provided with a plurality of first power supply interfaces, and the second power supply unit is provided with a plurality of second power supply interfaces;

a first end of one of the switching test branches is connected with one of the first power interfaces;

one of the input interfaces is connected to one of the second power interfaces.

Optionally, the ring-shaped switching test unit includes:

a first annular test relay module, a second annular test relay module;

the first annular test relay comprises a plurality of positive relays and a plurality of positive copper bars;

the first end and the second end of one positive electrode copper bar are respectively connected with the positive electrode of the power supply interface and the positive electrode of the charging gun interface;

one positive electrode relay is connected with two adjacent positive electrode copper bars;

the second annular test relay comprises a plurality of negative electrode relays and a plurality of negative electrode copper bars;

the first end and the second end of one negative copper bar are respectively connected with the negative electrode of the power supply interface and the negative electrode of the charging gun interface;

and one negative electrode relay is connected with two adjacent negative electrode copper bars.

Optionally, the ring-shaped switching test unit further includes:

the first annular test interface module and the second annular test interface module;

the first annular test interface module comprises a plurality of positive wire inlet interfaces and a plurality of positive wire outlet interfaces;

the first end and the second end of one positive copper bar are respectively connected with the positive wire inlet interface and the positive wire outlet interface, the positive wire inlet interface is electrically connected with a positive electrode of the charging gun interface, and the positive wire outlet interface is connected with a positive electrode of the source interface;

the control unit is connected with the control end of the positive relay through the positive outlet interface;

the second annular test interface module comprises a plurality of negative wire inlet interfaces and a plurality of negative wire outlet interfaces;

the first end and the second end of one negative copper bar are respectively connected with the negative wire inlet interface and the negative wire outlet interface, the negative wire inlet interface is connected with the negative electrode of the charging gun interface, and the negative wire outlet interface is connected with the negative electrode of the power supply interface;

the control unit is connected with the control end of the negative relay through the negative outlet interface.

Optionally, the four-to-two test unit includes a four-to-two relay module;

the four-to-two relay module comprises a plurality of positive switching relay modules, a plurality of negative switching relay modules, a first positive copper bar, a second positive copper bar, a first negative copper bar and a second negative copper bar;

the positive switching relay module is connected with the first positive copper bar and the second positive copper bar, and the negative switching relay module is connected with the first negative copper bar and the second negative copper bar;

the first end of the first positive copper bar is connected with the positive electrode of the first output port, and the first end of the second positive copper bar is connected with the positive electrode of the second output port;

the first end of the first negative electrode copper bar is connected with the negative electrode of the first output port, and the first end of the second negative electrode copper bar is connected with the negative electrode of the second output port;

the positive switching relay module and the negative switching relay module are used for forming the first switching relay unit and the second switching relay unit.

Optionally, the positive switching relay module includes a first positive switching relay and a second positive switching relay, and a positive electrode of the input interface is connected to a connection point of the first positive switching relay and the second positive switching relay;

the negative switching relay module comprises a first negative switching relay and a second negative switching relay, and the negative electrode of the input interface is connected with the connection point of the first negative switching relay and the second negative switching relay.

Optionally, the four-to-two test unit further includes a four-to-two interface module;

the four-to-two interface module comprises a four-to-two positive wire inlet interface, a four-to-two negative wire inlet interface and a four-to-two wire outlet interface;

the four-to-two positive incoming line interface and the four-to-two negative incoming line interface comprise the input port, and the four-to-two outgoing line interface comprises the first output port and the second output port;

the control unit is also connected with the control ends of the positive switching relay module and the negative switching relay module through the four-to-two outlet interface.

Optionally, the device further comprises an alternating current test unit;

the alternating current testing unit is provided with a direct current input interface and an alternating current output interface;

the direct current input interface is connected with the power supply interface, and the alternating current output interface is connected with the alternating current charging gun interface;

the control unit is also connected with the alternating current testing unit.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a test hardware platform charges, the test hardware platform charges includes an at least electrical unit, annular switch test unit and the control unit, wherein, the annular switch test unit includes four at least switching test branch roads, the first end of a switching test branch road, the second end respectively with a power source, a rifle interface that charges is connected, still dispose a relay unit between per two switching test branch roads, a relay unit is used for intercommunication or two adjacent switching test branch roads of disconnection, based on the structure of above-mentioned annular switch test unit, the test hardware platform that charges can support to, at least four ways or following one drag many charging control software's test, avoid producing appointed model machine earlier, when accomplishing corresponding software test again, the design that causes, the problem of debugging cycle length.

Drawings

FIG. 1 is a block diagram of a charging test hardware platform configuration in an embodiment;

FIG. 2 is a block diagram of a ring switch test unit in an embodiment;

FIG. 3 is a schematic structural diagram of a first annular test relay module in an embodiment;

FIG. 4 is a block diagram of a first ring test interface module according to an embodiment;

FIG. 5 is a block diagram of another charging test hardware platform configuration in an embodiment;

FIG. 6 is a block diagram of a charging test hardware platform according to an embodiment;

FIG. 7 is a schematic diagram of a four-to-two relay module in an embodiment;

FIG. 8 is a schematic diagram of a four-to-two interface module in an embodiment;

FIG. 9 is a block diagram of a charging test hardware platform according to an embodiment;

FIG. 10 is a block diagram of a charging test hardware platform according to an embodiment;

FIG. 11 is a front view of the charging test cabinet in the embodiment;

fig. 12 is a rear view of the charging test cabinet in the embodiment.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a block diagram of a charging test hardware platform in an embodiment, and referring to fig. 1, the charging test hardware platform includes: at least one power supply unit 100, a ring switch test unit 200, and a control unit 300.

Illustratively, in this embodiment, the charging test hardware platform is used to provide a hardware platform for the charging cabinet charging control software, wherein the control unit 300 is used to store the software to be tested, and the power supply unit 100 and the ring switching test unit 200 are used to respond to the control instruction of the software to be tested.

In this embodiment, the power supply unit is configured with a plurality of power supply interfaces, and the annular switching test unit includes at least four switching test branches;

the first end and the second end of one switching test branch are respectively connected with a power supply interface and a charging gun interface;

and a relay unit is also arranged between every two switching test branches, and one relay unit is used for connecting or disconnecting the two adjacent switching test branches.

For example, in this embodiment, the power supply unit may include a plurality of battery packs, and the power interface of one point of the power supply unit corresponds to the positive terminal and the negative terminal of one battery pack.

FIG. 2 is a schematic structural diagram of a ring switch test unit in an embodiment, and referring to FIG. 2, the ring switch test unit is configured with five switch test branches;

correspondingly, the power supply unit is provided with five power interfaces, and the second ends of the five switching test branches are respectively connected with the charging gun interfaces 1-5.

In the scheme, a relay unit 1 is configured between a first switching test branch and a second switching test branch; a relay unit 2 is arranged between the second switching test branch and the third switching test branch; a relay unit 3 is arranged between the third switching test branch and the fourth switching test branch; a relay unit 4 is arranged between the fourth switching test branch and the fifth switching test branch; and a relay unit 5 is arranged between the fifth switching test branch and the first switching test branch.

Referring to fig. 1 and 2, in the present embodiment, a control unit 300 is connected to a power supply unit 100 and relay units (1 to 5);

the control unit is used for controlling the power supply unit to output the specified power and controlling the on-off of the specified relay unit.

For example, in this embodiment, after the configuration of the control unit is completed, the control unit executes a proposed charging control program, and the charging test hardware platform responds to a specified control instruction, so as to implement a test on the charging control program.

For example, the charging control software can be tested by one or more charging (a plurality of vehicles are charged simultaneously through one charging cabinet) based on a charging test hardware platform (annular switching test unit);

specifically, when the number of the charging guns that are connected to the power supply is changed, if it is required to test whether the one-drag-many charging test program can control the charging power of the charging guns to be constant, it is possible to determine whether the one-drag-many charging test program is normal by determining whether the specified control instruction can control the power supply unit to adjust the output power and whether the specified relay unit can be controlled to be opened or closed.

The embodiment provides a charging test hardware platform, which comprises at least one power supply unit, an annular switching test unit and a control unit, wherein the annular switching test unit comprises at least four switching test branches, a first end and a second end of one switching test branch are respectively connected with a power supply interface and a charging gun interface, a relay unit is further configured between every two switching test branches and used for connecting or disconnecting the two adjacent switching test branches, and based on the structure of the annular switching test unit, the charging test hardware platform can support tests aiming at software functions such as single-gun charging control, double-gun charging control and at least four-way or lower one-to-many charging control in charging control software, so that the problems of long design and debugging periods caused when a designated prototype is produced first and corresponding software tests are completed are avoided.

Illustratively, as an implementable embodiment, the entity of the ring switch test unit may be constructed as follows:

configuring a ring switch test cell includes: a first annular test relay module, a second annular test relay module;

the first ring-shaped test relay is configured to comprise a plurality of positive relays and a plurality of positive copper bars, and the second ring-shaped test relay is configured to comprise a plurality of negative relays and a plurality of negative copper bars.

For example, referring to fig. 2, in the present embodiment, one relay unit includes one positive relay and one negative relay.

For example, in the present embodiment, fig. 3 is a schematic structural diagram of a first annular test relay module in an embodiment, and with reference to fig. 2 and 3, the first annular test relay includes positive relays 21 to 25 and positive copper bars 11 to 15;

the positive relay 21 is connected with the positive copper bars 11 and 12, the positive relay 22 is connected with the positive copper bars 12 and 13, the positive relay 23 is connected with the positive copper bars 13 and 14, the positive relay 24 is connected with the positive copper bars 14 and 15, and the positive relay 25 is connected with the positive copper bars 15 and 11.

In the scheme, the first end and the second end of one positive copper bar are respectively connected with the positive electrode of one power interface and the positive electrode of a charging gun interface.

Illustratively, referring to fig. 3, the first ring-shaped test relay module may further include a first mounting plate 3, wherein the positive relay and the positive copper bar are mounted on the first mounting plate 3, and the first ring-shaped test relay module may be fixed to a frame structure or other designated position based on the first mounting plate 3.

In the scheme, the structure of the first annular test relay module is configured to be the same as that of the second annular test relay module;

in the second annular test relay module, the first end and the second end of a negative electrode copper bar are respectively connected with the negative electrode of a power supply interface and the negative electrode of a charging gun interface.

As an embodiment, the ring switch test unit may include: the testing device comprises a first annular testing relay module, a second annular testing relay module, a first annular testing interface module and a second annular testing interface module.

For example, in the present embodiment, the first and second annular test relay modules have the same structure as the embodiment shown in fig. 3.

In the scheme, the first annular test interface module is configured to comprise a plurality of positive wire inlet interfaces and a plurality of positive wire outlet interfaces, and the second annular test interface module is configured to comprise a plurality of negative wire inlet interfaces and a plurality of negative wire outlet interfaces.

Fig. 4 is a schematic structural diagram of a first ring test interface module in an embodiment, and referring to fig. 4, as an implementation, the first ring test interface module includes positive incoming line interfaces 41 to 43 and positive outgoing line interfaces 51 to 52.

Referring to fig. 2 to 4, in the present scheme, first ends and second ends of the positive copper bars 11 to 15 are respectively connected to positive wire inlet interfaces 41 to 43 and positive wire outlet interfaces 51 to 52;

the positive wire inlet interfaces 41-43 are electrically connected with the positive electrodes of the charging gun interfaces 1-5, and the positive wire outlet interfaces 51-52 are connected with the positive electrode of the power supply interface;

the control unit 300 is connected to the control terminals of the positive relays 21 to 25 via the positive output interfaces 51 to 52.

For example, referring to fig. 4, the first ring test interface module may further include a second mounting plate 6, wherein the positive incoming line interfaces 41 to 43 and the positive outgoing line interfaces 51 to 52 are mounted on the second mounting plate 6, and the first ring test interface module may be fixed on the frame structure or other designated positions based on the second mounting plate 6.

Illustratively, in the present scheme, the first ring test interface module and the second ring test interface module are configured to have the same structure,

the first end and the second end of a negative copper bar in the second annular test relay module are respectively connected with a negative wire inlet interface and a negative wire outlet interface in the second annular test interface module;

the negative wire inlet interface is connected with the negative electrode of the charging gun interface, and the negative wire outlet interface is connected with the negative electrode of the power supply interface;

the control unit is connected with the control end of the negative relay through the negative outlet interface.

In the scheme, a first annular test relay module, a second annular test relay module, a first annular test interface module and a second annular test interface module are configured at the same time, and the annular test interface module is connected with a power supply unit, a charging gun interface and the annular test relay module, so that the wiring of the charging test hardware platform is simple.

Fig. 5 is a block diagram of another charging test hardware platform structure in the embodiment, and referring to fig. 5, on the basis of the scheme shown in fig. 1, the charging test hardware platform further includes a dual-path switching test unit 400, where the dual-path switching test unit 400 includes a first test branch and a second test branch.

Referring to fig. 3, the first testing branch includes a first relay unit 401, and a first end and a second end of the first relay unit are respectively connected to a power interface and the charging gun interface 6;

the second testing branch comprises a second relay unit 402, and a first end and a second end of the second relay unit 402 are respectively connected with a power supply interface and a charging gun interface 7;

a two-way switching test relay unit 403 is further configured between the first test branch and the second test branch, and the two-way switching test relay unit 403 is used for connecting or disconnecting the first test branch and the second test branch.

In this embodiment, the control unit 300 is further connected to a first relay unit 401, a second relay unit 402, and a two-way switching test relay unit 403.

On the basis of the beneficial effects of the scheme shown in fig. 1, in the scheme, the charging test hardware platform is also provided with a double-way switching test unit, and based on the double-way switching test unit, the test of functions such as double-gun switching charging control and the like in charging control software can be realized, so that the functions of the charging test hardware platform are enriched.

Fig. 6 is a block diagram of a charging test hardware platform according to another embodiment, and referring to fig. 6, on the basis of the scheme shown in fig. 1, the charging test hardware platform further includes a four-to-two test unit 500;

the four-to-two test unit 500 includes four input ports, a first output port 501 and a second output port 502.

In the scheme, one input port is connected with one power supply interface, one input port is connected with the first output port through a first switching relay unit, and the other input port is connected with the second output port through a second switching relay unit.

Referring to fig. 6, taking a first input port as an example, the input port is connected to a first output port 501 through a first switching relay unit 1, and is connected to a second output port 502 through a second switching relay unit 1.

On the basis of the beneficial effects of the scheme shown in fig. 1, in the scheme, the charging test hardware platform further comprises a four-to-two test unit, and based on the four-to-two test unit, the test of the four-in output power distribution function in the charging control software can be realized, so that the function of the charging test hardware platform is enriched.

As an exemplary implementation, a four-to-two relay module may be used to form an entity of a four-to-two test unit.

Fig. 7 is a schematic structural diagram of a four-to-two relay module in the embodiment, and referring to fig. 7, the four-to-two relay module is configured to include positive switching relay modules 81 to 84, negative switching relay modules 91 to 94, a first positive copper bar 71, a second positive copper bar 72, a first negative copper bar 73, and a second negative copper bar 74.

Referring to fig. 7, in the present embodiment, a tangent relay module includes a first tangent relay and a second tangent relay, a first end of the first tangent relay is connected to a first positive copper bar 71, a first end of the second tangent relay is connected to a second positive copper bar 72, and a second end of the first tangent relay is connected to a second end of the second tangent relay as a positive input common point;

one negative switching relay module comprises a first negative switching relay and a second negative switching relay, wherein the first end of the first negative switching relay is connected with a first negative copper bar 73, the first end of the second negative switching relay is connected with a second negative copper bar 74, and the second end of the first negative switching relay is connected with the second end of the second negative switching relay to serve as a negative input common point.

Referring to fig. 6 and 7, in this scheme, a first end of the first positive copper bar 71 is connected to a positive electrode of the first output port 501, and a first end of the second positive copper bar 72 is connected to a positive electrode of the second output port 502;

the first end of the first negative copper bar 73 is connected with the negative electrode of the first output port 501, and the first end of the second negative copper bar 74 is connected with the negative electrode of the second output port 502;

the positive pole of one input interface is connected with a positive pole input common point, and the negative pole of one input interface is connected with a negative pole input common point.

Referring to fig. 7, the four-turn-two relay module may further include a third mounting plate 10, wherein the positive switching relay modules 81 to 84, the negative switching relay modules 91 to 94, the first positive copper bar 71, the second positive copper bar 72, the first negative copper bar 73, and the second negative copper bar 74 are mounted on the third mounting plate 10, and based on the third mounting plate 10, the four-turn-two relay module may be fixed at a frame structure or other designated positions.

As an implementable aspect, the four-turn-two test unit may comprise: a four-to-two relay module and a four-to-two interface module, wherein the structure of the four-to-two relay module is the same as the scheme shown in fig. 7.

Fig. 8 is a schematic structural diagram of a four-to-two interface module in an embodiment, referring to fig. 8, in the present embodiment, the four-to-two interface module includes a four-to-two positive incoming line interface 111, a four-to-two negative incoming line interface 112, and a four-to-two outgoing line interface 113.

Referring to fig. 6 and 8, in the present embodiment, the four-to-two positive incoming line interface 111 and the four-to-two negative incoming line interface 112 include input ports, and the four-to-two positive incoming line interface 111 and the four-to-two negative incoming line interface 112 are used for being connected to a power interface;

in the four-to-two interface module, the four-to-two positive incoming line interface 111 is connected to the positive input common point, and the four-to-two negative incoming line interface 112 is connected to the negative input common point.

Referring to fig. 6 and 8, in this embodiment, the four-to-two outlet interface 113 includes a first output port 501 and a second output port 502, and the control unit 300 is further connected to the control ends of the positive switching relay module and the negative switching relay module through the four-to-two outlet interface 113.

In the scheme, the four-to-two relay module and the four-to-two interface module are connected with the power supply unit and the four-to-two relay module through the four-to-two interface module, so that wiring of the charging test hardware platform is simple.

Fig. 9 is a block diagram of a charging test hardware platform in an embodiment, and referring to fig. 9, power supply units respectively include a first power supply unit 101 and a second power supply unit 102.

For example, in the present embodiment, the first power supply unit 101 and the second power supply unit 102 are different in kind, for example, the first power supply unit 101 may be a 200kW power supply, and the second power supply unit 102 may be a 160kW power supply.

Referring to fig. 1, fig. 2 and fig. 9, the first power supply unit 101 is configured to be connected to the ring switching test unit 200, wherein the first power supply unit 101 is configured with a plurality of first power interfaces, and a first end of a switching test branch in one ring switching test unit 200 is connected to one first power interface.

For example, in this embodiment, the ring switching test unit 200 is connected to the first power supply unit 101 in the same manner as the ring switching test unit 200 shown in fig. 2 is connected to the power supply unit.

Referring to fig. 6 and 9, the second power supply unit 102 is configured to be connected to a four-to-two test unit 500, wherein the second power supply unit 102 is configured with a plurality of second power interfaces, and an input interface of one four-to-two test unit 500 is connected to one second power interface.

For example, in this embodiment, the connection manner of the four-to-two test unit 500 and the second power supply unit 102 is the same as the connection manner of the four-to-two test unit 500 and the power supply unit shown in fig. 6.

In the scheme, the charging test hardware platform is configured with the power supply units of different types, so that the charging test hardware platform can support tests aiming at charging control software of different types, and the functions of the charging test hardware platform are enriched.

Fig. 10 is a block diagram of a charging test hardware platform according to another embodiment, and referring to fig. 10, on the basis of the scheme shown in fig. 1, the charging test hardware platform further includes an ac test unit 600.

The ac testing unit 600 is configured with a dc input interface and an ac output interface, the dc input interface is connected to the power interface, the ac output interface is connected to the ac charging gun interface 1, and the control unit 300 is further connected to the ac testing unit 600.

In the scheme, the charging test hardware platform is also provided with the alternating current test unit, and based on the alternating current test unit, the test of the alternating current charging control function in the charging control software can be realized, so that the function of the charging test hardware platform is enriched.

For example, the charging test hardware platform may be provided in the form of a charging test cabinet, fig. 11 is a front view of the charging test cabinet in the embodiment, fig. 12 is a rear view of the charging test cabinet in the embodiment, and referring to fig. 1 to 4, 6 to 9, and 11 to 12, the charging test cabinet may be configured with a first structural member 008 and a second structural member 009;

the first structural member 008 is used for fixing a first power supply unit 101, and a first annular test relay module 012, a second annular test relay module 013, a first annular test interface module 017 and a second annular test interface module 018 are arranged below the first power supply unit 101;

the second structure 009 is to fix the second power supply unit 102, the four-to-two relay module 014, and the four-to-two interface module 019.

Referring to fig. 12, the charging test cabinet is further provided with a large current terminal row 023, and the first and second annular test relay modules 012 and 013 are connected with the charging gun through the large current terminal row 023.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A charging test hardware platform is characterized by comprising at least one power supply unit, an annular switching test unit and a control unit;

the power supply unit is provided with a plurality of power supply interfaces, and the annular switching test unit comprises at least four switching test branches;

the first end and the second end of one switching test branch are respectively connected with one power supply interface and one charging gun interface;

a relay unit is also arranged between every two switching test branches, and one relay unit is used for connecting or disconnecting the two adjacent switching test branches;

the control unit is connected with the power supply unit and the relay unit, and is used for controlling the power supply unit to output specified power and controlling the specified relay unit to be switched on and off.

2. The charging test hardware platform of claim 1, further comprising a two-way switching test unit;

the two-way switching test unit comprises a first test branch and a second test branch;

the first test branch comprises a first relay unit, and a first end and a second end of the first relay unit are respectively connected with one power supply interface and one charging gun interface;

the second testing branch comprises a second relay unit, and a first end and a second end of the second relay unit are respectively connected with one power supply interface and one charging gun interface;

a two-way switching test relay unit is also configured between the first test branch and the second test branch and is used for connecting or disconnecting the first test branch and the second test branch;

the control unit is also connected with the first relay unit, the second relay unit and the two-way switching test relay unit.

3. The charging test hardware platform of claim 1, further comprising a four-to-two test unit;

the four-to-two test unit comprises four input ports, a first output port and a second output port;

one of the input ports is connected to one of the power source ports, one of the input ports is connected to the first output port through a first switching relay unit, and one of the input ports is connected to the second output port through a second switching relay unit.

4. The charging test hardware platform of claim 3, comprising a first power supply unit, a second power supply unit;

the first power supply unit is provided with a plurality of first power supply interfaces, and the second power supply unit is provided with a plurality of second power supply interfaces;

a first end of one of the switching test branches is connected with one of the first power interfaces;

one of the input ports is connected to one of the second power supply interfaces.

5. The charging test hardware platform of claim 1, wherein the ring switch test unit comprises:

a first annular test relay module, a second annular test relay module;

the first annular test relay comprises a plurality of positive relays and a plurality of positive copper bars;

the first end and the second end of one positive electrode copper bar are respectively connected with the positive electrode of the power supply interface and the positive electrode of the charging gun interface;

one positive electrode relay is connected with two adjacent positive electrode copper bars;

the second annular test relay comprises a plurality of negative electrode relays and a plurality of negative electrode copper bars;

the first end and the second end of one negative copper bar are respectively connected with the negative electrode of the power supply interface and the negative electrode of the charging gun interface;

and one negative electrode relay is connected with two adjacent negative electrode copper bars.

6. The charging test hardware platform of claim 5, wherein the ring switch test unit further comprises:

the test system comprises a first annular test interface module and a second annular test interface module;

the first annular testing interface module comprises a plurality of positive pole wire inlet interfaces and a plurality of positive pole wire outlet interfaces;

the first end and the second end of one positive copper bar are respectively connected with the positive wire inlet interface and the positive wire outlet interface, the positive wire inlet interface is electrically connected with a positive electrode of the charging gun interface, and the positive wire outlet interface is connected with a positive electrode of the source interface;

the control unit is connected with the control end of the positive relay through the positive outlet interface;

the second annular test interface module comprises a plurality of negative wire inlet interfaces and a plurality of negative wire outlet interfaces;

the first end and the second end of one negative copper bar are respectively connected with the negative wire inlet interface and the negative wire outlet interface, the negative wire inlet interface is connected with the negative electrode of the charging gun interface, and the negative wire outlet interface is connected with the negative electrode of the power supply interface;

the control unit is connected with the control end of the negative relay through the negative outlet interface.

7. The charging test hardware platform of claim 3, wherein the four-to-two test unit comprises a four-to-two relay module;

the four-to-two relay module comprises a plurality of positive switching relay modules, a plurality of negative switching relay modules, a first positive copper bar, a second positive copper bar, a first negative copper bar and a second negative copper bar;

the positive switching relay module is connected with the first positive copper bar and the second positive copper bar, and the negative switching relay module is connected with the first negative copper bar and the second negative copper bar;

the first end of the first positive electrode copper bar is connected with the positive electrode of the first output port, and the first end of the second positive electrode copper bar is connected with the positive electrode of the second output port;

the first end of the first negative electrode copper bar is connected with the negative electrode of the first output port, and the first end of the second negative electrode copper bar is connected with the negative electrode of the second output port;

the positive switching relay module and the negative switching relay module are used for forming the first switching relay unit and the second switching relay unit.

8. The charging test hardware platform of claim 7, wherein the positive switching relay module comprises a first positive switching relay and a second positive switching relay, a positive pole of one of the input ports being connected to a connection point of the first positive switching relay and the second positive switching relay;

the negative switching relay module comprises a first negative switching relay and a second negative switching relay, and the negative pole of the input port is connected with the connection point of the first negative switching relay and the second negative switching relay.

9. The charging test hardware platform of claim 7, wherein the four-to-two test unit further comprises a four-to-two interface module;

the four-to-two interface module comprises a four-to-two positive wire inlet interface, a four-to-two negative wire inlet interface and a four-to-two wire outlet interface;

the four-to-two positive incoming line interface and the four-to-two negative incoming line interface comprise the input port, and the four-to-two outgoing line interface comprises the first output port and the second output port;

the control unit is also connected with the control ends of the positive switching relay module and the negative switching relay module through the four-to-two outlet interface.

10. The charging test hardware platform of claim 1, further comprising an ac test unit;

the alternating current testing unit is provided with a direct current input interface and an alternating current output interface;

the direct current input interface is connected with the power supply interface, and the alternating current output interface is connected with the alternating current charging gun interface;

the control unit is also connected with the alternating current testing unit.

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