The 【HR2X-2M】 is a microcontroller-controlled load resistor developed for pre-disposal discharge of vehicle-mounted LIBs. It discharges one battery for EVs with a voltage range of 190 to 240V.
With just a push of a button, discharge begins, emitting a preliminary sound when reaching 180.0V, and stopping the discharge with a final sound when it drops to 168.0V. A long press will force an emergency stop. Discharge without recording is also possible. The cutoff voltage is accurately controlled by a microcontroller with 12-bit A/D conversion. Discharge results are recorded on an SD card, and the discharge capacity is automatically calculated using the included analysis software. There is also an option to set the discharge stop voltage in 1V increments for research purposes (after stopping, it returns to the set value). It discharges at approximately 230V 20A, discharging the maximum load (4.7KW) of the "Hoba Battery" series. Due to its simple structure allowing high current flow, it can measure SOH and SOC accurately compared to conventional constant current discharge devices.
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basic information
In switching with MOS-FET, there is no sparking during ON-OFF. The main unit is lightweight at 7.4 kg and portable. Since all the circuit boards and software are developed in-house, it can accommodate various specifications. Please feel free to consult with us.
Price information
Optimal design for LIB discharge of TOYOTA Prius.
Price range
P3
Delivery Time
P4
※It may vary depending on quantity and specifications, so please feel free to contact us.
Applications/Examples of results
Measurement of the degradation level (SOH) of EV batteries, safety and complete discharge before scrapping. For battery research (proven use at a well-known private university). Inspection of backup batteries for solar power generation.
Detailed information
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This is an overall conceptual diagram of the system. Data is recorded on the main unit, and when analyzed with the attached software, the discharge and cumulative discharge amount (SOH, SOC) can be printed as curves and numerical values.
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By launching the attached software on your computer and entering the file name and notes, you can print a report with graphs.
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To start, just press the black button. The upper display shows the voltage and elapsed time every second, while the lower display shows the current progress status. The basic operation is just the black button, and to stop it midway, simply press and hold the red button on the right.
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When the discharge is stopped, a unique file number (sequential number) will be displayed on the LCD, so if you need to analyze the results and create a report, specify that file name. Here, you can enter the company name, date, etc.
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The battery of the TOYOTA Prius is actually used by a certain company.
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Company information
Hamamatsu Computing Co., Ltd. provides computer repair services for businesses and word processor repairs, while also developing and selling a battery capacity measuring device (diagnostic machine) with its own unique technology. Since the programs are developed in-house, various original specifications are possible. Please feel free to contact us.