Multi-station testing device for fuel cell system

Abstract

The utility model discloses a multi-station testing device for a fuel cell system, which only adopts a high-voltage bidirectional power supply, a low-voltage power supply and a power distribution control unit to provide a working power supply for testing for a plurality of fuel cell system testing stations and station heat dissipation modules, so that the consumption of power supply equipment is reduced, and the cost is reduced. The test cost is reduced; the space occupied by the equipment is saved; the voltmeter and the indicating lamp can monitor the state of a station power supply at any time, and particularly, the contactor can be a high-voltage contactor with a contact state feedback function, so that the power distribution control unit can judge the operation state of the contactor according to a feedback signal, and can detect and eliminate faults in time; the detection efficiency is improved; and the operation safety of testers is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of fuel cell system testing device, especially a kind of fuel cell system multi-station testing device. BACKGROUND

[0002] Hydrogen fuel cell is a kind of chemical energy of hydrogen and oxygen is directly converted into power generation device, has been widely applied in fixed power generation, automobile and ship etc..Fuel cell system is mainly composed of fuel cell module, boost module, heater, water pump, hydrogen pump, air compressor pump etc., wherein hydrogen pump is controlled by hydrogen pump controller, air compressor pump is controlled by air compressor pump controller, heater, water pump, hydrogen pump controller and air compressor pump controller are all with the high voltage of boost module Electric interface.Therefore, when testing fuel cell system, high-voltage bidirectional power supply and low-voltage power supply need to be set in test station to provide high voltage to station and low voltage to station heat dissipation module.However, with the increasing demand of fuel cell system, the testing amount of fuel cell system is increasing, to ensure that test is completed quickly, multiple stations are usually tested simultaneously and uninterruptedly, so each station needs to match high-voltage bidirectional power supply, low-voltage power supply and test harness, etc., there are problems such as high cost of testing equipment and complicated wiring. SUMMARY

[0003] The utility model is to solve the above-mentioned technical problems existing in prior art, provide a kind of fuel cell system multi-station testing device.

[0004] The technical solution of the utility model is: a kind of fuel cell system multi-station testing device, is equipped with high-voltage bidirectional power supply, low-voltage power supply, N stations and N station heat dissipation modules, each station has positive voltage interface and negative voltage interface, is equipped with first conducting row and second conducting row, the high-voltage bidirectional power supply has N positive ends and is connected with the first conducting row, the high-voltage bidirectional power supply has N negative ends and is connected with the second conducting row;It is equipped with 5N+1 contactors KM1-KM 5N+1 2N third conducting rows, the control end of the 5N+1 contactors KM1-KM 5N+1 It is connected with distribution control unit;Four contactors successively connected in the contactor KM1-KM 4N Two third conducting rows are a group, the electrical contact one end of two contactors in each group is connected with the first conducting row, and the other end is connected with the positive voltage interface of a station through a third conducting row, the electrical contact one end of other two contactors is connected with the second conducting row, and the other end is connected with the negative voltage interface of the same station through another third conducting row, voltage table and pilot lamp are connected in parallel between the positive voltage interface and the negative voltage interface of each station;N+1 contactors are left in the remaining N+1 contactors, and N contactors KM 4N+1 -KM 5NThe electric contact points of the low-voltage power supply and the positive ends of the N work position heat dissipation modules are connected one by one. 5N+1 The electric contact points of the low-voltage power supply and the negative ends of the N work position heat dissipation modules are connected.

[0005] The utility model discloses only adopt one high-voltage bidirectional power supply, one low-voltage power supply and one power distribution control unit, can provide the working power for multiple fuel cell system test work position and work position heat dissipation module, reduced the power equipment amount, reduced the test cost and saved the space occupied by equipment, the voltmeter and pilot lamp set up can monitor work position power state at any time, especially the contactor set up can adopt the high-voltage contactor with contact point state feedback function, and the power distribution control unit can judge the contactor operating state according to the feedback signal, detects and removes the fault in time, improves the detection efficiency and ensures the operation safety of test personnel. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is the structural schematic diagram of the utility model embodiment 1.

[0007] Figure 2 It is the structural schematic diagram of the utility model embodiment 2. DETAILED DESCRIPTION Embodiment 1

[0008] The utility model discloses a kind of fuel cell system multi-position test device as shown in Figure 1 It is equipped with high-voltage bidirectional power supply, low-voltage power supply, two work positions and two work position heat dissipation modules, each work position has positive voltage interface and negative voltage interface, and is equipped with first electrically conductive row 1 and second electrically conductive row 2, the high-voltage bidirectional power supply has two positive ends and is connected with first electrically conductive row 1, and the high-voltage bidirectional power supply has two negative ends and is connected with second electrically conductive row 2;It is equipped with 11 contactors KM1-KM 11 And four third electrically conductive rows 3, first electrically conductive row 1, second electrically conductive row 2 and third electrically conductive row 3 all adopt copper row with good electrically conductive performance, and the 11 contactors KM1-KM 11the control end of the contactor KM1-KM8 is connected with the power distribution control unit; four contactors connected in sequence in the contactor KM1-KM8 are connected with two third conductive rows 3, the electrical contact of two contactors in each group is connected with the first conductive row 1 at one end and connected with the positive voltage interface of a work station through a third conductive row 3 at the other end, the electrical contact of the other two contactors is connected with the second conductive row 2 at one end and connected with the negative voltage interface of the same work station through another third conductive row 3 at the other end, the positive voltage interface and the negative voltage interface of each work station are connected in parallel with a voltage meter and an indicator; that is, the contactor KM1-KM4 and two third conductive rows 3 form a group, the contactor KM5-KM8 and another two third conductive rows 3 form a group; for example, the electrical contact of the contactor KM1-KM2 is connected with the first conductive row 1 at one end and connected with the positive voltage interface of the work station one through a third conductive row 3 at the other end, the electrical contact of the contactor KM3-KM4 is connected with the second conductive row 2 at one end and connected with the negative voltage interface of the work station one through another third conductive row 3 at the other end; the electrical contact of the contactor KM5-KM6 is connected with the first conductive row 1 at one end and connected with the positive voltage interface of the work station two through a third conductive row 3 at the other end, the electrical contact of the contactor KM7-KM8 is connected with the second conductive row 2 at one end and connected with the negative voltage interface of the work station two through another third conductive row 3 at the other end. The electrical contact of two contactors KM9-KM 10 of the remaining three contactors is connected with the positive end of the low-voltage power supply and the positive end of the work station one heat dissipation module and the work station two heat dissipation module respectively, and the electrical contact of the last contactor KM 11 is connected with the negative end of the low-voltage power supply and the negative end of the two work station heat dissipation modules. Embodiment 2

[0009] A kind of fuel cell system multi-station testing device of the utility model as Figure 2 shown, is equipped with high-voltage bidirectional power supply, low-voltage power supply, three work stations and three work station heat dissipation modules, each work station has positive voltage interface and negative voltage interface, is equipped with first conductive row 1 and second conductive row 2, the high-voltage bidirectional power supply has three positive ends and is connected with the first conductive row 1, the high-voltage bidirectional power supply has three negative ends and is connected with the second conductive row 2;It is equipped with 16 contactors KM1-KM 16 And six third conductive rows 3, the first conductive row 1, the second conductive row 2 and the third conductive row 3 all adopt copper row with good conductive performance, the control end of the 16 contactors KM1-KM 16 is connected with the power distribution control unit;The electrical contact of the contactor KM1-KM 12The four contactors in turn are connected with two third conductive rows 3, two contactors in each group have their electrical contacts connected with the first conductive row 1 at one end and connected with the positive voltage interface of one station through one third conductive row 3 at the other end, the other two contactors have their electrical contacts connected with the second conductive row 2 at one end and connected with the negative voltage interface of the same station through the other third conductive row 3 at the other end, the positive end and the negative end of each station are connected in parallel with a voltmeter and an indicator; that is, the contactors KM1-KM4 are connected with two third conductive rows 3, the contactors KM5-KM8 are connected with two third conductive rows 3, and the contactors KM9-KM 12 KM10 are connected with two third conductive rows 3; for example, the electrical contacts of the contactors KM1-KM2 are connected with the first conductive row 1 at one end and connected with the positive voltage interface of station one through one third conductive row 3 at the other end, the electrical contacts of the contactors KM3-KM4 are connected with the second conductive row 2 at one end and connected with the negative voltage interface of station one through the other third conductive row 3 at the other end; the electrical contacts of the contactors KM5-KM6 are connected with the first conductive row 1 at one end and connected with the positive voltage interface of station two through one third conductive row 3 at the other end, the electrical contacts of the contactors KM7-KM8 are connected with the second conductive row 2 at one end and connected with the negative voltage interface of station two through the other third conductive row 3 at the other end; for example, the electrical contacts of the contactors KM9-KM 10 10 are connected with the first conductive row 1 at one end and connected with the positive voltage interface of station three through one third conductive row 3 at the other end, the electrical contacts of the contactors KM 11 11-KM 12 12 are connected with the second conductive row 2 at one end and connected with the negative voltage interface of station three through the other third conductive row 3 at the other end. Three contactors KM 13 13-KM 15 14 have their electrical contacts connected with the positive end of the low-voltage power supply and the positive end of the heat dissipation module of station one, the heat dissipation module of station two and the heat dissipation module of station three respectively, and the electrical contacts of the last contactor KM 16 15 are connected with the negative end of the low-voltage power supply and the negative end of the three heat dissipation modules.

[0010] The contactor in the embodiment 1-2 is selected DC 12-1000V, the continuous working current is 300A, the maximum of double parallel can satisfy 600A, with the contact state feedback, the test requirement of the fuel cell system within 300kW can be satisfied. The power is powered on, the closing or opening of the contactor is controlled by the power distribution control unit, the power supply or the cut-off of the fuel cell system is respectively transported through the positive voltage interface and the negative voltage interface of each station; through the contact state feedback of the contactor, it can be confirmed whether the contactor and the power supply of each station are normally working. At the same time, the voltmeter and the indicator light are also matched with the corresponding station, ensuring that when any station is running, the voltmeter will display the current voltage value, the status indicator light will be lit, which is convenient for prompting other testers that the equipment is running, avoiding safety accidents.

Claims

1. A fuel cell system multi-station testing device, provided with a high-voltage bidirectional power supply, a low-voltage power supply, N stations and N station heat dissipation modules, each station having a positive voltage interface and a negative voltage interface, characterized in that: a first conductive row (1) and a second conductive row (2) are provided, the high-voltage bidirectional power supply has N positive terminals and is connected to the first conductive row (1), and the high-voltage bidirectional power supply has N negative terminals and is connected to the second conductive row (2); 5N+1 contactors KM1-KM 5N+1 and 2N third conductive rows (3) are provided, the control ends of the 5N+1 contactors KM1-KM 5N+1 are connected to a power distribution control unit; four contactors connected in sequence in the contactors KM1-KM 4N are a group with two third conductive rows (3), one end of the electrical contacts of the two contactors in each group is connected to the first conductive row (1), and the other end is connected to the positive voltage interface of a station through a third conductive row (3), one end of the electrical contacts of the other two contactors is connected to the second conductive row (2), and the other end is connected to the negative voltage interface of the same station through another third conductive row (3), a voltmeter and an indicator lamp are connected in parallel between the positive voltage interface and the negative voltage interface of each station; the electrical contacts of N contactors KM 4N+1 -KM 5N in the remaining N+1 contactors are respectively connected to the positive terminal of the low-voltage power supply and the positive terminal of the N station heat dissipation modules one by one, and the electrical contacts of the last contactor KM 5N+1 are connected to the negative terminal of the low-voltage power supply and the negative terminal of the N station heat dissipation modules.

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