TWI715396B - Integrated voltage measurement system of fuel cell - Google Patents

Abstract

An integrated voltage measurement system of fuel cell is disclosed in the present invention. The system includes a voltage measuring module and a connection module. Based on the reason that the integrated voltage measurement system electrically coupled with the connection module directly and simply via terminals and the reason that the voltage measuring module receives and transmits the voltage value signal through wireless communication, the usage of the signal cables is no more required. Hence, the chance of assembly errors can be reduced. Meanwhile, the voltage detection is realized through wireless communication, which avoids the situation that the voltage is too high and the circuit and components are damaged due to incorrect assembly. The power of the voltage measuring module is self-powered via the reaction of the fuel cell. No external power supply is required to provide power to the voltage measuring module, which can effectively reduce the overall size of the system.

Description

Integrated voltage measurement system for fuel cell

The present invention discloses a voltage measurement system, and particularly relates to an integrated voltage measurement system for a fuel cell.

In order to ensure the working state and performance of the fuel cell stack, it is necessary to confirm that the fuel cell voltage can be operated under the normal working voltage, and it is also necessary to monitor whether the voltage of each single cell is uniform. For example, if the voltage fluctuation range of the single cell in the fuel cell is too large, the voltage is too low, etc., if the voltage measurement result of the single cell in the fuel cell cannot be displayed in real time, the best protection measures are missed Timing, it will cause damage to the entire battery stack or reduce the performance of the entire battery system. Therefore, it is really important to be able to detect in real time whether a single cell in a fuel cell is abnormal.

In the conventional fuel cell, the system for measuring voltage is to read the voltage value of each single cell in the fuel cell. As shown in Figure 1, the voltage measurement module 3 integrates the terminal 2 through the probe to The fuel cell 1 is coupled, and the circuit substrate 32 in the voltage measurement module 3 is not only coupled with the isolated signal line 31a, but also must be coupled with a huge number of signal transmission lines 31b.

Although the conventional information bus industry uses modularization to reduce the complexity of assembly, in practical applications, especially in high-voltage fuel cells, the number of single cells required is quite large. The number of signal transmission lines and isolated signal lines is still considerable Huge, once there is an error in the assembly sequence, or a fall due to a poor assembly, etc., it is easy to cause the voltage measurement module to have an abnormal result of excessive voltage because the signal transmission line cannot normally transmit the voltage value signal , So that the entire fuel cell and voltage measurement module are exposed to the risk of damage.

In addition, in addition to the aforementioned risks, the conventional voltage measurement module must be provided with an additional independent power supply to provide power, and the volume occupied by the overall system will therefore become difficult to reduce.

In view of the above-mentioned problems, the present invention discloses an integrated voltage measurement system for a fuel cell to integrate the voltage measurement system into the fuel cell and directly use the fuel cell holder as a self-powered power source, which can effectively reduce the overall structure Complexity reduces the size of the entire voltage detection system.

The purpose of the present invention is to provide a fuel cell integrated voltage measurement system, which uses wireless communication to transmit the voltage value of each single cell in the fuel cell, so that the voltage measurement module, the connection module and the fuel cell There is no need to use signal line coupling, which effectively achieves the effect of voltage isolation.

The object of the present invention is to provide an integrated voltage measurement system for a fuel cell, in which the voltage measurement module is directly coupled to the connection module by terminals. The integrated structure can reduce the probability of errors during assembly and reduce the There is a risk of overvoltage in the fuel cell due to incorrect wiring.

The purpose of the present invention is to provide an integrated voltage measurement system for fuel cells, since the integrated voltage measurement system and the external data transmission unit are only coupled by an isolated signal line. Therefore, even if there is an installation error, it will only cause the voltage measurement module to be disconnected from the fuel cell, and there will be no problem of damage due to excessive voltage.

The purpose of the present invention is to provide an integrated voltage measurement system for fuel cells, which is directly integrated into the fuel cell, so that the power required by the voltage measurement module can be directly supplied by the fuel cell without the need for additional independent power supply components .

In order to achieve the above-mentioned implementation objectives, the present invention proposes a fuel cell integrated voltage measurement system, which is coupled to a fuel cell including a plurality of single cells. The fuel cell integrated voltage measurement system includes a voltage measurement module and A connection module, wherein the voltage measurement module includes a wireless signal transmission unit and a plurality of terminal parts, the connection module includes a carrier and a plurality of electrical connectors, and the electrical connectors are detachably arranged on the carrier, Each electrical connection element includes a first electrical connection end and a second electrical connection end. The first electrical connection end of the electrical connection element is correspondingly coupled to the terminal portion of the voltage measurement module. The electrical connection element The second electrical connection terminal is correspondingly coupled to the single cell of the fuel cell, and the wireless signal transmission unit of the voltage measurement module receives and outputs the wireless voltage signal of the single cell.

In an embodiment of the present invention, the data transmission method of the wireless signal transmission unit is selected from an active wireless transmission method, a passive wireless transmission method, and a combination of the foregoing methods.

In an embodiment of the present invention, the wireless signal transmission unit further reads the wireless voltage signal of each battery cell transmitted by an external data transmission unit.

In an embodiment of the present invention, the external data transmission unit is passive, and the wireless signal transmission unit in the voltage measurement module further reads the wireless voltage captured by the external data transmission unit through an active reader Signal.

In an embodiment of the present invention, the integration of the external data transmission unit and the fuel cell The integrated voltage measurement system is only coupled with at least one signal isolator.

In an embodiment of the present invention, the isolation signal element is only used to transmit digital signals.

In an embodiment of the present invention, the isolation signal component is a synchronous serial interface.

In an embodiment of the present invention, the terminal portion of the voltage measurement module and the first electrical connection end of the connection module are more pluggable.

In an embodiment of the present invention, the terminal portion of the voltage measurement module and the first electrical connection end of the connection module are more integrated.

In an embodiment of the present invention, the terminal portion of the voltage measurement module and the first electrical connection end of the connection module are integrated, which can be achieved through a post-process or a direct integrated molding process.

In an embodiment of the invention, the carrier is insulated.

In an embodiment of the present invention, the carrier of the connection module has a plurality of through holes and at least one fixing part, the through holes are located in the carrier, the fixed part connects the carrier and the fuel cell, and the electrical connector is detachably arranged In the through hole of the carrier.

In an embodiment of the present invention, the carrier is further along the through hole to form a plurality of extensions between the cells, and the extensions are insulated.

In an embodiment of the present invention, an insulating layer is further formed on the outer surface of the second electrical connection terminal.

In an embodiment of the present invention, the electrical connector further has at least one engaging portion.

In an embodiment of the present invention, the power required by the integrated voltage measurement system of the fuel cell is directly supplied by the fuel cell.

In summary, in a fuel cell integrated voltage measurement system disclosed in the present invention, the voltage measurement module and the connection module are electrically connected in a direct coupling manner, and The voltage measurement module receives and transmits wireless voltage signals by means of wireless communication. Therefore, in the assembly of the integrated voltage measurement system, the lead wire is not used, which reduces the probability of assembly errors. The detection of the voltage value is achieved through wireless communication, which avoids excessive voltage and damage to circuits and components due to assembly errors. In addition, the power source of the voltage measurement module is self-powered after the reaction of the fuel cell. There is no need to install an external power supply to provide power to the voltage measurement module, which can effectively reduce the size of the overall system.

1‧‧‧Fuel cell

2‧‧‧Probe integrated terminal

3‧‧‧Voltage measurement module

31a‧‧‧Isolated signal line

31b‧‧‧Signal transmission line

32‧‧‧Circuit board

4‧‧‧Fuel cell

41‧‧‧Single cell

5‧‧‧Integrated voltage measurement system

51‧‧‧Voltage measurement module

51a‧‧‧Wireless signal transmission unit

51b‧‧‧Terminal

52‧‧‧Connecting module

52a‧‧‧Carrier

52aa‧‧‧through hole

52ab‧‧‧Fixed part

52ac‧‧‧Extension

52b‧‧‧Electrical connector

52ba‧‧‧First electrical connection terminal

52bb‧‧‧Second electrical connection terminal

52bc‧‧‧Insulation layer

52bd‧‧‧Clamping part

6‧‧‧External data transmission unit

Figure 1 is a schematic structural diagram of a conventional fuel cell voltage measurement module.

FIG. 2 is a schematic diagram of the structure of the integrated voltage measurement system of the fuel cell disclosed in the present invention.

FIG. 3 is a block diagram of the integrated voltage measurement system of the fuel cell disclosed in the present invention.

FIG. 4A is a schematic partial cross-sectional structure diagram of the integrated voltage measurement system of the fuel cell disclosed in the present invention.

4B is a schematic diagram of the three-dimensional structure of the integrated voltage measurement system of the fuel cell disclosed in the present invention.

The advantages and spirit of the present invention can be further understood from the following detailed description and the accompanying drawings. The structure and use of the embodiment of the present invention are described in detail as follows. It must be understood that the present invention provides many applicable innovative concepts, which can be widely implemented under a specific background technology. This particular embodiment is only represented in a particular way to make and use the invention, But it does not limit the scope of the present invention.

Please refer to FIG. 2, FIG. 3, FIG. 4A, and FIG. 4B at the same time. FIG. 2 is a schematic diagram of the structure of the integrated voltage measurement system of the fuel cell disclosed in the present invention, and FIG. 3 is the present invention. A schematic block diagram of the disclosed integrated voltage measurement system for a fuel cell. FIG. 4A is a partial cross-sectional structure diagram of the integrated voltage measurement system for a fuel cell disclosed in the present invention. FIG. 4B is a schematic diagram of a partial cross-sectional structure of the fuel cell disclosed in the present invention. A schematic diagram of the three-dimensional structure of the integrated voltage measurement system.

The integrated voltage measurement system 5 of the fuel cell disclosed in the present invention can be applied to a fuel cell 4 that includes a plurality of single cells 41. Each single cell 41 has a wireless voltage signal. The integrated voltage measurement system 5 disclosed in the present invention includes a A voltage measurement module 51 and a connection module 52.

Wherein, the voltage measurement module 51 in the integrated voltage measurement system 5 includes a wireless signal transmission unit 51a and a plurality of terminal portions 51b, and the connection module 52 includes a carrier 52a and a plurality of electrical connectors 52b. 52a has a plurality of through holes 52aa and at least one fixed portion 52ab. The through hole 52aa is located on the carrier 52a. The fixed portion 52ab connects the carrier 52a with the fuel cell 4, and the electrical connector 52b is detachably connected to the carrier 52a. In the through hole 52aa, the fixing portion 52ab can be selected from a buckle, a tenon, a hook, a slider, a sliding groove, and a combination of the above. Each electrical connector 52b includes a first electrical connection terminal 52ba and a second electrical connection terminal 52bb. The first electrical connection terminal 52ba is correspondingly coupled to the terminal portions 51b of the voltage measurement module 51, The second electrical connection end 52bb of each electrical connection member 52b is correspondingly coupled to the single cell 41 of the fuel cell 4.

First, in the connection module 52, the carrier 52a is insulated, and for the fuel cell 4 with high voltage demand, the number of single cells 41 included in the stack is usually quite large. The distance between them is also relatively narrow, in order to avoid short circuit problems caused by contact, On the outer surface of the electrical connector 52b, especially on the outer surface of the second electrical connector 52bb, an insulating layer 52bc is formed to prevent the electrical connector 52b from colliding with the adjacent single cell 41 Touch and cause a short circuit. In addition, in order to avoid short circuit between the electrical connector 52b and the adjacent cell 41, the main body 52a of the connection module 52 can be formed along the direction of the through hole 52aa to form a plurality of insulating cells between the cells 41. Extension 52ac.

In addition, when multiple fuel cells 4 are assembled, in order to save space and increase the volumetric energy density of the assembly, close connections are mostly used to make it difficult to attach and detach the connection modules 52 on adjacent fuel cells 4, so In the connection module 52 disclosed in the present invention, the carrier 52a corresponding to the other end of the through hole 52aa can be used as a holding structure, so that the connection module 52 can be assembled or disassembled directly by a clamp or manually Way to load and unload. In the connection module 52, the electrical connector 52b can be designed with different lengths and appearances according to different mechanism designs, so as to reduce the chance of installation errors during assembly.

It is worth noting that in the integrated voltage measurement system 5, the voltage measurement module 51 and the connection module 52 are electrically coupled, and different mechanisms can be connected according to different requirements. For example, In other words, the terminal portion 51b of the voltage measurement module 51 and the first electrical connection end 52ba of the connection module 52 may have a pluggable connection relationship. In other words, similar to the aspect shown in FIG. 4B, the voltage The terminal portion 51b of the measurement module 51 can be coupled to the first electrical connection terminal 52ba of the connection module 52 through a plug-in method, or, in other aspects, the terminal portion 51b of the voltage measurement module 51 is connected to the connection module 52 The first electrical connection end 52ba of the module 52 is an integrated connection. For example, the terminal portion 51b of the voltage measurement module 51 and the first electrical connection end 52ba of the connection module 52 can be welded Or other post-process methods are fixedly coupled, or the terminal portion 51b of the voltage measurement module 51 and the first electrical connection end 52ba of the connection module 52 can be an integral structure, in other words, The voltage measurement module 51 and the connection module 52 are in an integrally formed connection relationship structurally and electrically.

In addition, the signal communication mode between the integrated voltage measurement system 5 and the external data transmission unit 6 can be divided into wired and wireless communication modes. For example, the signal communication mode between the integrated voltage measurement system 5 and the external data transmission unit 6 is In wired communication mode, an isolated signal line (not shown in the figure) can be used as a coupling physical line, usually a serial peripheral interface (Serial Peripheral Interface, SPI), because the isolated signal part 6 is only used to transmit digital information. It does not transmit analog wireless voltage signals. Therefore, even if the line accidentally falls off, an error occurs during assembly, or any unexpected error occurs, it will only be disconnected from the fuel cell 4, and not due to overvoltage. High causes the problem that the integrated voltage measurement system 5 and the fuel cell 4 are damaged.

When the signal communication mode between the integrated voltage measurement system 5 and the external data transmission unit 6 is in the wireless communication mode, the wireless communication transmission unit 51a of the voltage measurement module 51 can be used directly, except for receiving and outputting fuel cells. In addition to the plurality of wireless voltage signals of 4, it also reads the wireless voltage signals transmitted by the external data transmission unit 6. The data transmission mode of the wireless signal transmission unit is selected from active wireless transmission methods, passive wireless transmission methods, and The combination of the above methods, for example, the data transmission mode of the wireless signal transmission unit 51a can use active radio frequency technology, such as using existing ZIGBEE, ANT, BT... etc. as the transmission interface, or using passive The RFID tag is used as the transmission interface, and when the wireless signal transmission unit 51a adopts a passive transmission interface, an active reader (not shown in the figure) is usually used externally to read back the wireless voltage signal. In other words, In the present invention, the wireless communication transmission unit 51a of the voltage measurement module 51 receives the wireless voltage signal of the fuel cell 4 through wireless communication, but the communication mode with the external data transmission unit 6 can be different Needs And design, to achieve the purpose of data transmission through wired or wireless communication.

According to the description in the previous paragraph, because the voltage measurement module 7 uses wireless communication to receive the wireless voltage signal of each cell 41 in the fuel cell 4, in addition to reducing the density of electronic components (such as large-scale use) In addition to the problem of mutual electrical interference caused by the signal transmission line used to transmit analog signals, the distance between the integrated voltage measurement system 5 and the fuel cell 4 can also be effectively shortened.

Furthermore, since the voltage measurement module 7 in the integrated voltage measurement system 5 of the present invention is integrated with the connection module 5, the power required by the voltage measurement module 7 can be directly transmitted through the fuel cell 4. In order to supply, there is no need to configure a separate battery for power supply.

Therefore, the integrated voltage measurement system of the fuel cell disclosed in the present invention uses wireless communication to transmit the voltage value of each single cell in the fuel cell, so that the voltage measurement module, the connection module, and the fuel cell There is no need to use signal lines for coupling, which effectively achieves the effect of voltage isolation. Moreover, since the voltage measurement module is directly coupled to the connection module through the terminal, the integrated structure can reduce the probability of errors during assembly, and reduce the risk of excessively high fuel cell voltage due to wiring errors. . In addition, because the integrated voltage measurement system and the external data transmission unit are only coupled by an isolated signal line, even if an installation error occurs, it will only cause the voltage measurement module and the fuel cell to lose connection. There will be no problem of damage caused by excessive voltage. And because the integrated voltage measurement system is directly integrated into the fuel cell, the power required by the voltage measurement module can be directly supplied by the fuel cell without the need to install additional independent power supply components.

From the foregoing, it can be seen that in the integrated voltage measurement system of a fuel cell disclosed in the present invention, the voltage measurement module is integrated on the connection module of the fuel cell, and the voltage The measurement module and the connection module are only coupled to each other by means of terminals, and the voltage measurement module receives and transmits wireless voltage signals through wireless communication. Therefore, in the assembly of the integrated voltage measurement system, there is no The use of lead wires reduces the probability of assembly errors. At the same time, the detection of voltage values is achieved through wireless communication, avoiding excessive voltage and damage to circuits and components due to assembly errors. In addition, the power source of the voltage measurement module is self-powered after the reaction of the fuel cell. There is no need to install an external power supply to provide power to the voltage measurement module, which can effectively reduce the size of the overall system.

Although the present invention is disclosed in the foregoing embodiments as above, it is not intended to limit the present invention. Anyone familiar with similar art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of patent protection shall be determined by the scope of the patent application attached to this specification.

4‧‧‧Fuel cell

41‧‧‧Single cell

5‧‧‧Integrated voltage measurement system

51‧‧‧Voltage measurement module

51a‧‧‧Wireless signal transmission unit

52‧‧‧Connecting module

6‧‧‧External data transmission unit

Claims (13)

A fuel cell integrated voltage measurement system is coupled to a fuel cell, the fuel cell includes a plurality of single cells, each of the single cells has a wireless voltage signal, and the fuel cell integrated voltage measurement system includes: A voltage measurement module, including a wireless signal transmission unit and a plurality of terminal parts; and A connection module includes a carrier and a plurality of electrical connectors. The electrical connectors are detachably disposed on the carrier. Each electrical connector includes a first electrical connection end and a second electrical connection. The first electrical connection end of each electrical connector is correspondingly coupled to the terminal portions of the voltage measurement module, and the second electrical connection end of each electrical connector is correspondingly coupled The single cell connected to the fuel cell; Wherein, the wireless signal transmission unit of the voltage measurement module receives and outputs the wireless voltage signal of each single battery. The integrated voltage measurement system of a fuel cell according to claim 1, wherein the data transmission method of the wireless signal transmission unit is selected from an active wireless transmission method, a passive wireless transmission method, and a combination of the foregoing methods. The integrated voltage measurement system for a fuel cell according to claim 1, wherein the wireless signal transmission unit further reads the wireless voltage signals transmitted by an external data transmission unit. For the fuel cell integrated voltage measurement system described in claim 3, wherein the external data transmission unit is passive, the wireless signal transmission unit further reads the data of the external data transmission unit through an active reader The captured wireless voltage signals. The integrated voltage measurement system of a fuel cell according to claim 1, wherein the terminals of the voltage measurement module and the first electrical connections of the connection module are more pluggable . The integrated voltage measurement system for a fuel cell according to claim 1, wherein the terminals of the voltage measurement module and the first electrical connection ends of the connection module are more integrated. The integrated voltage measurement system of a fuel cell according to claim 6, wherein the terminal portions of the voltage measurement module and the first electrical connection ends of the connection module are integrated, and it is more possible It can be achieved through post-process or directly integrated molding process. The integrated voltage measurement system for a fuel cell according to claim 1, wherein the carrier is insulated. The fuel cell integrated voltage measurement system according to claim 1, wherein the carrier of the connection module has a plurality of through holes and at least one fixing portion, the through holes are located on the carrier, and the fixing portion is connected The carrier and the fuel cell, and the electrical connectors are detachably arranged in the through holes of the carrier. The integrated voltage measurement system for a fuel cell according to claim 9, wherein the carrier is further along the through holes to form a plurality of extensions between the single cells, and the extensions are insulated. The integrated voltage measurement system of a fuel cell according to claim 1, wherein the outer surface of the second electrical connection ends further forms an insulating layer. The integrated voltage measurement system for a fuel cell according to claim 1, wherein each of the electrical connectors further has at least one engaging portion. In the integrated voltage measurement system of a fuel cell as described in claim 1, the required power is directly supplied by the fuel cell.

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