Voltage inspection acquisition terminal, device and test board

Abstract

The utility model discloses a voltage inspection acquisition terminal, a voltage inspection acquisition device and a test board, and belongs to electric pile detection equipment. Comprising a printed circuit board, a plurality of probe seats which are vertically arranged on the printed circuit board, and a plurality of probes which are inserted into the probe seats and correspond to the probe seats, and a connector is fixedly installed on the printed circuit board. According to the utility model, the probe is vertically arranged on the printed circuit board through the probe seat, and then the probe is connected with the connector fixedly arranged on the printed circuit board through the printed circuit, so that the relative movement range among the probe, the connector and the circuit is reduced, and the circuit electric connection stability between the probe and the connector is improved; and the accuracy and stability of the voltage signal acquired by the acquisition terminal are ensured.

Description

Technical Field

[0001] The utility model belongs to fuel cell stack detection equipment, in particular to a voltage inspection acquisition terminal and a test bench. Background Art

[0002] The performance of each single cell of a fuel cell is an important factor affecting the performance of the fuel cell stack. When the fuel cell operates normally, the voltages of each single cell should be kept consistent. If the local single cell voltage is severely lower than the overall average voltage due to reasons such as blockage of liquid water in the flow channel of local single cells, shortage of fuel / oxidant, and poor manufacturing / assembly consistency, the operation of the fuel cell must be stopped in time to protect the fuel cell stack itself. Therefore, accurate monitoring of the voltages of each single cell in the battery stack is an important measure to ensure the safe and reliable operation of the stack.

[0003] Fuel cell cycle voltage monitoring (CVM) is a device for real-time monitoring of the voltages of single cells in the stack. The battery cycle voltage monitoring system consists of a voltage inspection acquisition terminal structure and a voltage measurement circuit system. The voltage inspection acquisition terminal structure plays a key role in the effective connection between the voltage measurement circuit system and each single cell of the fuel cell stack, ensuring the accuracy and stability of the acquired voltage signals.

[0004] After retrieval, a Chinese utility model patent (publication number: CN212989415U) discloses a fuel cell stack single cell voltage inspection acquisition terminal. By changing the probe model, it can be applied to graphite bipolar plate stacks and metal bipolar plate stacks with or without reserved detection slots. The probes are inserted in parallel on the fixed bracket, and then the fixed bracket is connected to the PCB connector through a wire. Generally, soldering is used to achieve electrical connection between the wire and the probe and the PCB connector. During long-term use, it is easy to cause the solder joints to fall off, resulting in the failure of the entire acquisition terminal function. Summary of the Utility Model

[0005] In order to overcome the above technical defects, the utility model provides a voltage inspection acquisition terminal and a test bench to solve the problems involved in the background art.

[0006] The utility model provides a voltage inspection acquisition terminal, including: a printed circuit board, a plurality of probe seats vertically arranged on the printed circuit board, and a plurality of probes inserted on the probe seats and corresponding to the probe seats.

[0007] Preferably or optionally, a connector is fixedly installed on the printed circuit board, and a plurality of printed circuits are printed on the surface of the printed circuit board, and the printed circuits electrically connect the signal terminals corresponding to the probe seats and the connector.

[0008] Preferably or optionally, the probe seat is made of a metal material and forms an electrical connection with the probe.

[0009] Preferably or alternatively, the probe base is welded to the printed circuit board through a tube body.

[0010] Preferably or alternatively, a PTC resettable fuse is further provided in the printed circuit.

[0011] Preferably or alternatively, the probe is a flexible structure with a spring built therein.

[0012] Preferably or alternatively, one end of the probe base is a cylindrical structure and the other end is a flat structure.

[0013] Preferably or alternatively, the printed circuit board is made of an insulating rigid material.

[0014] Preferably or alternatively, it further includes: a housing disposed outside the printed circuit board, and a connection assembly is provided at one end of the housing.

[0015] The present utility model further provides a voltage patrol detection test bench, including the voltage patrol detection acquisition terminal described above.

[0016] The present utility model relates to a voltage patrol detection acquisition terminal and a test bench. Compared with the prior art, it has the following beneficial effects: The present utility model vertically installs the probe on the printed circuit board through the probe base, and then connects the probe to the connector fixedly installed on the printed circuit board through the printed circuit, reducing the relative movement amplitude between the probe, the connector, and the circuit, improving the electrical connection stability of the circuit between the probe and the connector, and ensuring the accuracy and stability of the voltage signal collected by the acquisition terminal. Description of the Drawings

[0017] Figure 1 It is a schematic internal structure diagram of the acquisition terminal in the present utility model.

[0018] Figure 2 It is a schematic overall structure diagram of the acquisition terminal in the present utility model.

[0019] Figure 3 It is a top view of the printed circuit board and the probe in the present utility model.

[0020] Figure 4 It is a schematic structural diagram of the printed circuit board and the probe in the present utility model.

[0021] The reference numerals are: 100, printed circuit board; 110, fuse; 200, probe; 300, probe base; 400, connector; 410, signal terminal; 500, housing; 600, connection assembly. Detailed Embodiments

[0022] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. However, it will be apparent to one skilled in the art that the present utility model may be practiced without one or more of these details. In other instances, some well-known technical features are not described in order to avoid obscuring the present utility model.

[0023] Refer to the appended Figures 1 to 4 , a voltage inspection and acquisition terminal, comprising: a printed circuit board 100, a probe 200, a probe base 300, a connector 400, a housing 500, and a connection assembly 600.

[0024] Among them, the printed circuit board 100 is made of an insulating rigid material to prevent a direct electrical connection between the probe 200 and the connector 400. Preferably, the printed circuit board 100 is a PBC board made of a non-metallic material. A plurality of probe bases 300 are vertically distributed on the printed circuit board 100, and the probe bases 300 are welded to the printed circuit board 100 through tubes. The probes 200 correspond to the probe bases 300 one by one and are inserted into the probe bases 300. The probe bases 300 are made of a metallic material. When the probes 200 are inserted into the probe bases 300, electrical connections are formed between the probes 200 and the probe bases 300. A solder pad type connector 400 is fixedly installed on the printed circuit board 100. A plurality of printed circuits are printed on the surface of the printed circuit board 100. The probe bases 300 are connected to the printed circuits through pins to electrically connect the signal terminals 410 corresponding to the probes 200 and the connector 400.

[0025] In this embodiment, the probes 200 are vertically installed on the printed circuit board 100 through the probe bases 300, and then the probes 200 are connected to the connector 400 through printed circuits, reducing the relative movement amplitude between the probes 200, the connector 400, and the circuits, improving the electrical connection stability between the probes 200 and the connector 400, and ensuring the accuracy and stability of the voltage signals acquired by the acquisition terminal. Moreover, compared with wire connections and etched circuits, it has higher reliability and stability, can connect the probes 200 and the connector 400 without damage, efficiently, and stably, and stably output voltage detection signals. Since high-temperature water vapor is generated during the testing of the battery stack, and the etched circuits in this embodiment can withstand high temperatures, high humidity, and other environmental changes, it has higher reliability, stability, and durability.

[0026] In a further embodiment, a PTC resettable fuse 110 is also provided in the printed circuit. It can be understood that the fuse 110 is not a necessity. When the voltage of some single cells in the stack is abnormal and the voltage and current are too high, it may cause the circuit to burn out. Therefore, the fuse 110 is provided in the middle of the circuit where the probe base 300 and the connector 400 are connected. The type of the fuse 110 should be selected according to the capacity of the stack to be tested.

[0027] In a further embodiment, the probe 200 is a flexible structure with a built-in spring. The connection mode between the probe 200 and the electrode plate is changed to an elastic contact mode, without the need for welding and pre-set holes. The probe 200 can be in contact connection with various metal or non-metal materials and can be effectively used in the inspection of the graphite plate fuel cell stack. In addition, one end of the contact leg is set to be conical, which plays a guiding role and ensures the connection stability between the probe 200 and the electrode plate.

[0028] In a further embodiment, a housing 500 is provided outside the printed circuit board 100. The housing 500 is a metal shell, which can ensure the mechanical strength of the inspection at different installation positions and at the same time ensure a certain ability of the voltage inspection to resist mechanical shock and mechanical vibration. In addition, the housing 500 and the printed circuit board 100 form a closed cavity, and a connector 400 is arranged in the closed cavity. The connector 400 is preferably a D-type solder plate connector, and the voltage signal measured by the probe 200 is transmitted to the voltage measurement chip through the D-type solder plate connector. Therefore, a voltage measurement chip and other functional components can also be arranged in the closed cavity, and the specific situation depends on the sizes of the housing 500 and the printed circuit board 100.

[0029] In a further embodiment, a connection component 600 is provided at one end of the housing 500. The connection component 600 includes a fixed part and a locking part, which fixedly connect the acquisition terminal to the output end of the moving component in the voltage inspection test bench, realize the automatic movement of the acquisition terminal, and improve the detection efficiency of the voltage inspection test bench.

[0030] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

Claims

1. A voltage inspection and collection terminal, characterized in that: include: A printed circuit board (100), a plurality of probe seats (300) vertically arranged on the printed circuit board (100), and a plurality of probes (200) plugged into the probe seats (300) and corresponding to the probe seats (300).

2. The voltage inspection and collection terminal according to claim 1, characterized in that: A connector (400) is fixedly provided on the printed circuit board (100), and the probe seat (300) is electrically connected to pins corresponding to the connector (400).

3. The voltage inspection and collection terminal according to claim 2, characterized in that: The probe seat (300) is made of metal material and is electrically connected to the probe (200).

4. The voltage inspection and collection terminal according to claim 2, characterized in that: The probe seat (300) is welded on the printed circuit board (100) via a tube body.

5. The voltage inspection and collection terminal according to claim 2, characterized in that: A PTC resettable fuse (110) is also provided between each probe (200) and the connector (400).

6. The voltage inspection and collection terminal according to claim 1, characterized in that: The probe (200) is a flexible structure with a built-in spring.

7. The voltage inspection and collection terminal according to claim 1, characterized in that: One end of the probe seat (300) is a cylindrical structure, and the other end is a flat structure.

8. The voltage inspection and collection terminal according to claim 1, characterized in that: Also includes: A housing (500) is arranged outside the printed circuit board (100), and a connection component (600) is arranged at one end of the housing (500).

9. A voltage inspection device, characterized in that: It comprises the voltage inspection and collection terminal as described in any one of claims 1 to 8.

10. A test bench, characterized in that: It includes the voltage inspection and collection device described in claim 9.

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