阅读说明：本技术 一种氢燃料电池巡检测量系统 (Hydrogen fuel cell inspection measurement system ) 是由 于娇 郭旭 李旭 姚大庆 汪建建 王永 黄德波 于 2019-10-25 设计创作，主要内容包括：本发明提供一种氢燃料电池巡检测量系统,包括电池电压采集模块、电池组温度采集模块、电池组总压采集模块、菊花链、CAN通讯模块及电源供电模块,电池电压采集模块、电池组温度采集模块和电池组总压采集模块分别通过直流斩波器连接在车载MCU上,电池电压采集模块、电池组温度采集模块和电池组总压采集模块之间串联后通过菊花链连接在信号转换芯片上,通过信号转换芯片将信号转化成SPI信号并送至车载MCU,CAN通讯模块通过菊花链连接在车载MCU上,且通过CAN通讯模块与外部通讯,电源供电模块给各个部件供电。成本低、寿命长、功耗低,测量精度高,测量周期时间短,安全等级高,EMC等级和阻燃等级可满足行业标准要求等。(The invention provides a hydrogen fuel cell inspection and measurement system which comprises a cell voltage acquisition module, a cell pack temperature acquisition module, a cell pack total pressure acquisition module, a daisy chain, a CAN communication module and a power supply module, wherein the cell voltage acquisition module, the cell pack temperature acquisition module and the cell pack total pressure acquisition module are respectively connected to a vehicle-mounted MCU through a direct current chopper, the cell voltage acquisition module, the cell pack temperature acquisition module and the cell pack total pressure acquisition module are connected in series and then connected to a signal conversion chip through the daisy chain, a signal is converted into an SPI signal through the signal conversion chip and is sent to the vehicle-mounted MCU, the CAN communication module is connected to the vehicle-mounted MCU through the daisy chain and is communicated with the outside through the CAN communication module, and the power supply module supplies power to each component. The method has the advantages of low cost, long service life, low power consumption, high measurement precision, short measurement period and high safety level, and the EMC level and the flame retardant level can meet the requirements of industrial standards.)

1. The utility model provides a hydrogen fuel cell patrols and examines measurement system which characterized in that: including battery voltage collection module, group battery temperature collection module, group battery total pressure collection module, daisy chain, CAN communication module and power supply module, battery voltage collection module, group battery temperature collection module and group battery total pressure collection module connect on-vehicle MCU through the DC chopper respectively, battery voltage collection module, group battery temperature collection module and group battery total pressure are established ties between the collection module after and are connected on the signal conversion chip through the daisy chain, change the signal into SPI signal and send to on-vehicle MCU through the signal conversion chip, CAN communication module passes through the daisy chain and connects on-vehicle MCU, and through CAN communication module and outside communication, power supply module supplies power for each part.

2. The hydrogen fuel cell inspection measurement system according to claim 1, wherein: the power supply module converts external 9-32V voltage into voltage suitable for the module to supply power.

3. The hydrogen fuel cell inspection measurement system according to claim 1, wherein: and a hardware reset module is further integrated on the vehicle-mounted MCU, and the hardware is emergently reset through the hardware reset module.

4. The hydrogen fuel cell inspection measurement system according to claim 1, wherein: the battery voltage acquisition module, the battery pack temperature acquisition module and the battery pack total pressure acquisition module are uniformly acquired by adopting a battery front end management chip.

Technical Field

The invention relates to the field of hydrogen energy battery management, in particular to a hydrogen fuel battery inspection and measurement system.

Background

In recent years, with the higher and higher requirements of the state on the automobile emission standard and the progressive progress of the electric automobile technology, the electric automobile is also more and more the first choice of people's travel tools. However, the short board of the pure electric vehicle can continue mileage and charging time, and cannot meet the market demands of large-area and wide-range public transportation, urban logistics, long-distance transportation and the like. Thus, many cities in the country are vigorously developing hydrogen fuel cell power. The hydrogen fuel cell power automobile has the characteristics of cleanness, zero emission, long endurance, quick filling time and the like, and the power mode needs to be popularized vigorously. Therefore, a scheme design of the hydrogen fuel cell routing inspection measuring system is necessary.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a hydrogen fuel cell inspection and measurement system, which detects various indexes of a hydrogen fuel cell by matching a cell voltage acquisition module, a cell pack temperature acquisition module, a cell pack total pressure acquisition module, a daisy chain, a CAN communication module and a power supply module, improves the safety, and has small appearance and volume, convenient installation and high dustproof and waterproof grade. The method has the advantages of low cost, long service life, low power consumption, high measurement precision, short measurement period and high safety level, and the EMC level and the flame retardant level can meet the requirements of industrial standards.

The invention provides a hydrogen fuel cell inspection and measurement system which comprises a cell voltage acquisition module, a cell pack temperature acquisition module, a cell pack total pressure acquisition module, a daisy chain, a CAN communication module and a power supply module, wherein the cell voltage acquisition module, the cell pack temperature acquisition module and the cell pack total pressure acquisition module are respectively connected to a vehicle-mounted MCU through a direct current chopper, the cell voltage acquisition module, the cell pack temperature acquisition module and the cell pack total pressure acquisition module are connected in series and then connected to a signal conversion chip through the daisy chain, a signal is converted into an SPI signal through the signal conversion chip and is sent to the vehicle-mounted MCU, the CAN communication module is connected to the vehicle-mounted MCU through the daisy chain and is communicated with the outside through the CAN communication module, and the power supply module supplies power to all parts.

The further improvement lies in that: the power supply module converts external 9-32V voltage into voltage suitable for the module to supply power.

The further improvement lies in that: and a hardware reset module is further integrated on the vehicle-mounted MCU, and the hardware is emergently reset through the hardware reset module.

The further improvement lies in that: the battery voltage acquisition module, the battery pack temperature acquisition module and the battery pack total pressure acquisition module are uniformly acquired by adopting a battery front end management chip.

The fuel cell front-end management chip uses a Meixin special battery management IC, MAX17823B, supports voltage measurement of positive and negative bidirectional polarities, does not need to additionally increase switching devices such as relays and the like, saves cost and simplifies a design scheme. The number of the battery management chips is flexibly configured according to the number of the hydrogen power battery packs, and data among the management chips are in signal communication through a daisy chain, so that the speed is high, the cost is low, and the signal integrity is good. The daisy chain signal is converted into an SPI signal interacting with the MCU through a special signal conversion chip MAX17841, and the MCU module and the CAN transceiver module interact the patrol inspection measurement data with an external management module. The power module part supports a 12V/24V system of an external whole vehicle or a direct current power supply of other power supply sources, converts the direct current power supply into 5V voltage required by an internal circuit through the internal module, is used for the work of modules such as an MCU (microprogrammed control unit) and the like on one hand, and is used for a working power supply of a front-end management chip on the other hand. The front end management chip needs to support measurement of positive and negative bidirectional polarity voltage, so that a working power supply needs bidirectional power supply voltage, and the implementation scheme is that a special voltage conversion chip is used for converting 5V voltage into positive and negative 32V voltage to be output, and isolation is achieved through a transformer so as to finish power supply of the front end battery management chip.

The invention has the beneficial effects that: through battery voltage acquisition module, group battery temperature acquisition module, group battery total pressure acquisition module, daisy chain, CAN communication module and power supply module cooperate, detect each item index of hydrogen fuel cell, improve the security, entire system appearance is small, the installation of being convenient for, dustproof and waterproof is high grade. The method has the advantages of low cost, long service life, low power consumption, high measurement precision, short measurement period and high safety level, and the EMC level and the flame retardant level can meet the requirements of industrial standards.

Drawings

FIG. 1 is a block diagram of a system layout of the present invention.

Fig. 2 is a schematic diagram of the east electrical scheme of the present invention.

Detailed Description

For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.

As shown in fig. 1-2, this embodiment provides a hydrogen fuel cell inspection and measurement system, including battery voltage collection module, group battery temperature collection module, group battery total pressure collection module, daisy chain, CAN communication module and power supply module, battery voltage collection module, group battery temperature collection module and group battery total pressure collection module connect on vehicle-mounted MCU through the dc chopper respectively, battery voltage collection module, group battery temperature collection module and group battery total pressure collection module are established ties between and are connected on signal conversion chip through the daisy chain after connecting in series, convert the signal into SPI signal and send to vehicle-mounted MCU through signal conversion chip, CAN communication module connects on vehicle-mounted MCU through the daisy chain, and through CAN communication module and outside communication, power supply module supplies power for each part. The power supply module converts external 9-32V voltage into voltage suitable for the module to supply power. And a hardware reset module is further integrated on the vehicle-mounted MCU, and the hardware is emergently reset through the hardware reset module. The battery voltage acquisition module, the battery pack temperature acquisition module and the battery pack total pressure acquisition module are uniformly acquired by adopting a battery front end management chip. Through battery voltage acquisition module, group battery temperature acquisition module, group battery total pressure acquisition module, daisy chain, CAN communication module and power supply module cooperate, detect each item index of hydrogen fuel cell, improve the security, entire system appearance is small, the installation of being convenient for, dustproof and waterproof is high grade. The method has the advantages of low cost, long service life, low power consumption, high measurement precision, short measurement period and high safety level, and the EMC level and the flame retardant level can meet the requirements of industrial standards.