这款DXE500CAB是一种高精度直流传感器，精度为千分之一（0.1%），主要安装在电池组母线上，用于监测充电和放电电流。DXE500CAB采用磁通门技术，具有精度高、磁滞低等优点。
由于使用了磁通门原理，零偏置电流小于10mA，没有磁滞效应，在1000A高电流冲击后仍然存在，能够保持低偏置和高精度特性。
特别适用于高精度动力电池电量监测管理系统的应用。
传感器的所有功能和环境使用条件均满足汽车级水平的要求。
产品特点
●良好的线性度线性度误差<0.1%
●宽电压电源电源电压+11V-+30V
●电源保护功能过电压自动保护
●精度高精度：0.2%-温度漂移＜50ppm
●数字通信高速CAN2.0接口
●传感器工作温度范围：-40℃-+105℃
应用领域
●电动汽车电池管理系统（BMS）
●电动汽车蓄电池系统配电箱（BDU）
●电动汽车高压配电箱（PDU）
●工业锂电池的能量管理
●设备地面储罐备用电源
Electrical data
| Parameter | specifications | Condition | ||
| Minimum value | Standard value | Maximum value | ||
| Rated input IPN= | -500A | 500A | / | |
| Measure range IPM= | -600A | 600A | ||
| Power supply current UC | 11V | 12V/24V | 30V | |
| Working current @Ip=0A IC | 30mA | Uc=12V,T=25℃ | ||
| Working current @I PM IC | 160mA | Uc=12V,T=25℃ | ||
| Linearity Error L | -0.001 | 0.001 | ±30℃ | |
| Zero deviation @ Ip=0A Io | -10mA | 10mA | ±30℃ | |
| Accuracy @ Ip=± 40A XG | -60mA | 60mA | ±30℃ | |
| Operating temperature TA | -40℃ | 105℃ | ||
| Zero temperature drift Toff | 0Ma/K | |||
| Gain temperature drift Tgain | -50ppm/K | 50ppm/K | ±30℃ | |
| Output noise | -10dB | 10dB | ||
CAN Data Format
| Message Description | CAN ID | Data length | Message launch type | Signal description | Signal name | Start bit | Length |
| Return Current IP (mA) | 0X3C2 | 8 bytes | Cyclic transmitted message 10ms cycle | IP Value: 80000000H=0mA 7FFFFFFFH=-1mA 80000001H=1mA | IP-VALUE | 24 | 32 |
| Error indication 0 = Normal 1 = Failure | ERROR INDICATION | 32 | 1 | ||||
| Error Information | CSM_FAIL | 33 | 7 | ||||
| NAME | PRODUCT_NAME | 48 | 16 | ||||
| CRC-8 POLY: 8+X2+X+1 | CRC_8 | 56 | 8 |
| Error description | IP VALUE | ERROR INDICATION | ERROR INFORMATION |
| Invalidation error | FFFFF FFFH | 1 | 40H |
| Current exceeds 600A | FFFFF FFFH | 1 | 41H |
| Overfrequency oscillation exceeding 10ms（>2.5kHz） | FFFFF FFFH | 1 | 44H |
| The magnetic ring does not oscillate more than 20ms | FFFFF FFFH | 1 | 46H |
| Entering Failure Mode | FFFFF FFFH | 1 | 47H |
| No signal exceeding 100ms | FFFFF FFFH | 1 | 49H |
| Overvoltage（>32V） | FFFFF FFFH | 1 | 4AH |
Error information
CAN electrical parameters
● CAN2.0
● CAN oscillator tolerance: 0.27%
● Baud rate: 250kpbs
● External resistance: 120Ω
● Data pattern: big-endian
Mechanical dimension IP (Direction of primary current)
 |  |
Mechanical characteristics
●General tolerance: ± 0.5 mm
●Other tolerance execution: GB/T 1804-2000-m
●Fixing hole size: Disc installation φ 6.5mm
●Fasten screw: M6
●Recommended fastening torque: 1.8Nm(± 10 %)
●Connector: Tyco AMP 1473672
●Shell material: PBT GF30
●Weight: 80g
●Pin material: tinned brass
●IP GRADE: IP56
Performance parameter definition
●Static output voltage (VQVO): Sensor output voltage in the absence of obvious magnetic field B=0G state
-BR:The static voltage output VQVO has a constant ratio to the power supply voltage Vcc; VQVO= Vcc/2
● Sens (sensitivity): Sens is the slope of the reference output line VOUT=VCC/2+2×IP/IP_MAX, which refers to the change in output as the current changes. Its relationship with the current is : Sens=2/IP_MAX
●Zero temperature drift (Off set with Temperature): Due to the tolerances of internal components, stress and heat dissipation factors, the zero point may shift under stable working conditions
●Sensitivity temperature drift (Sensitivity withTemperature): Due to the influence of the internal temperature compensation coefficient, the sensitivity will change over the entire operating temperature compared to the expected value at room temperature
●Zero point electrical offset voltage( Electrical offset Voltage): The error caused by the noise of HALL components and the amplification factor of the internal operational amplifier itself is called offset voltage
● Response time :The response time of a sensor refers to the time interval between the final 90% of the applied current and the corresponding value of the sensor output to the applied current.
●Zero magnetic offset voltage ( Magnetic Offset): When the primary current reaches its maximum value of IP→0, the error generated at the output end due to the hysteresis phenomenon of the magnetic core material of the sensor is called the zero magnetic offset voltage.
●Zero offset voltage（Offset Voltage）:The zero offset voltage is the output voltage when the primary current is zero, and the ideal value is VQV0=2.5, Therefore, the difference between VQV0 and the ideal value is called the total zero offset voltage error. This offset error is attributed to the zerooffset voltage (due to the resolution adjusted by the internal QVO of the ASIC), magnetic offset, temperature drift, and hysteresis caused by temperature.
● Rise time: The rise time of the sensor refers to the time interval between the sensor output of 10% and reaching the final 90%
●Zero ratio error ( QVO Ratio metricity error ): When the power supply voltage VCC changes from 5V to 4.75＜VCC1＜5.25, the deviation between the zero point output of the sensor and the theoretical value is defined as follows:
● Linearity Error: Non linearity is an indicator that measures the linearity of the sensor IC within the full current measurement range. Here, the end based straight line is used as the reference working straight line:
Wherein, LinERR-Terminal linearity error of sensors
△LMAX-The absolute value of the arithmetic mean of the output signal values measured multiple times in the forward and backward strokes at the same calibration point, and the maximum difference between the response point on the reference line
NOTE
● Incorrect wiring may cause damage to the sensor. After the sensor is connected to a 5V power supply, the measured current passes through the direction of the sensor arrow, and the corresponding voltage value can be measured at the output end.
● -BR mode: Zero point output voltage VQVO=VCC/2, Gain fixed at 2V, The output curve is :VOUT=VCC/2+2×IP/IP_MAX;
If the power supply voltage changes within a certain range, it will cause a change in VOUT;
For example, VCC range 4.75V~5.25V,the static output voltage VCC corresponding to 0A has an output range of 2.375V~2.625V, and the gain does not change with VCC, fixed at 2V. Therefore, the output range of full scale VOUT(IPMAX) is 4.375V~4.625V.
-BF mode: Between VCC= 4.75V~ 5.25V, the zero output voltage is fixed at 2.5V and the fixed gain is 2V. The output curve is: VOUT=2.5+2×IP/IP_MAX.
