A battery testing device

Abstract

The present invention discloses a battery detection device, wherein the battery parameter detection circuit can measure the voltage and external temperature of the battery. The control and detection module of the present invention can realize the battery current measurement, and is provided with a battery internal temperature detection interface, which can detect the internal temperature of the battery, and through the synergistic effect of the control module, the discharge circuit is controlled to realize the battery discharge. The present invention is provided with a communication circuit to realize CAN communication, and has active heat dissipation, which ensures the long-term normal working temperature of the device.

Description

Technical Field

[0001] The invention belongs to the field of battery parameter detection, and in particular relates to a battery detection device. Background Art

[0002] Since the 21st century, people have been expecting cars to be cleaner and more environmentally friendly, so electric cars have received widespread attention. Compared with traditional fuel vehicles, electric cars are pollution-free, quieter, and have excellent acceleration performance, and are favored by governments and consumers. Electric cars are the direction of future car development. Batteries are the core components of electric cars. Battery management systems are essential for batteries. However, during the long-term use of batteries, various aging problems and failures will occur. Because there is no real-time detection of battery parameters, abnormal conditions of the battery cannot be discovered in time, resulting in the battery being unable to be used normally. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, a battery detection device provided by the present invention solves the problem in the prior art that the battery cannot be used due to the lack of a real-time battery detection device.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a battery detection device, including a rectangular parallelepiped shell, the rectangular parallelepiped shell includes a shell cover and a base that cooperate with each other; a fan, a heat dissipation aluminum plate, a discharge circuit board and a detection circuit board are arranged in sequence between the shell cover and the base;

[0005] The base is rectangular, with a protrusion on its edge, and a first mounting ear and a second mounting ear with screw holes are provided on its two parallel sides, a plurality of through holes are provided on it, and a first metal column and a second metal column are provided on its inner surface; the detection circuit board is fixed on the base and connected to the first metal column and the second metal column respectively; the detection circuit board is rectangular, with a notch on one corner, and a communication interface, a reset button and an indicator light are provided on a side adjacent to the notch, and a signal interface and a fuse are provided on the opposite side of the side where the communication interface is located, and 4 through holes are provided on the detection circuit board; 4 through holes are provided on the discharge circuit board and each through hole is provided with a double-through isolation stud, and each of the double-through isolation studs corresponds to a through hole of the detection circuit board one by one, and a discharge wiring board connected in parallel is also provided on the discharge circuit board, and a first discharge wiring board is provided on the discharge wiring board. electrical terminals and second discharge terminals; the heat dissipation aluminum plate is provided with 4 through holes, and the through holes on the heat dissipation aluminum plate correspond one to one with the through holes on the discharge circuit board; the fan comprises a shell with one side being a square, and the four corners of the shell are respectively provided with through holes, and the through holes on the fan correspond one to one with the through holes on the heat dissipation aluminum plate; a surface of the shell cover corresponding to the base is provided with a plurality of through holes corresponding to the fan; an irregular opening cooperating with a signal interface and a fuse, and a first terminal hole and a second terminal hole cooperating with a first discharge terminal and a second discharge terminal, respectively, are provided on the other surface of the shell cover; an opening cooperating with a communication interface, and a button through hole and an indicator light through hole cooperating with a reset button and an indicator light, respectively, are provided on a surface parallel to the surface where the irregular opening is located; the fan, the heat dissipation aluminum plate, the discharge circuit board and the detection circuit board are connected by bolts.

[0006] The beneficial effects of the present invention are:

[0007] (1) The battery parameter detection circuit of the present invention can measure the voltage and external temperature of the battery.

[0008] (2) The control and detection module of the present invention can realize battery current measurement, and is provided with a battery internal temperature detection interface, which can detect the internal temperature of the battery. At the same time, through the coordinated action of the control module, the discharge circuit can be controlled to realize battery discharge.

[0009] (3) The present invention is provided with a communication circuit to realize CAN communication, and has active heat dissipation to ensure the long-term normal operating temperature of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a first disassembly schematic diagram of a battery detection device proposed by the present invention;

[0011] Figure 2 This is a second disassembly schematic diagram of a battery detection device proposed by the present invention;

[0012] Figure 3 This is a schematic diagram of the assembly of a battery detection device proposed by the present invention;

[0013] Figure 4 This is a circuit diagram of a battery parameter detection module in the present invention;

[0014] Figure 5 This is a circuit diagram of the control and detection module in the present invention;

[0015] Figure 6 This is a circuit diagram of a fan control module in the present invention;

[0016] Figure 7 This is a circuit diagram of the CAN communication module in the present invention;

[0017] Figure 8 This is a circuit diagram of the analog-to-digital conversion module in the present invention;

[0018] Fig. 9 This is a circuit diagram of a control module in the present invention;

[0019] Fig.10 It is a power supply circuit module diagram in the present invention;

[0020] Fig.11 is a circuit diagram of a discharge circuit in the present invention;

[0021] Wherein: 1-shell cover, 2-through hole, 3-first terminal hole, 4-second terminal hole, 5-irregular opening, 6-fan, 7-heat dissipation aluminum plate, 8-discharge circuit board, 9-first discharge terminal, 10-second discharge terminal, 11-discharge terminal board, 12-detection circuit board, 13-communication interface, 14-reset button, 15-indicator light, 16-signal interface, 17-fuse, 18-base, 19-first mounting ear, 20-second mounting ear, 21-first metal column, 22-second metal column, 23-opening, 24-button through hole, 25-indicator light through hole. DETAILED DESCRIPTION

[0022] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 3As shown together, a battery detection device includes a rectangular shell, wherein the rectangular shell includes a shell cover 1 and a base 18 that cooperate with each other; a fan 6, a heat dissipation aluminum plate 7, a discharge circuit board 8 and a detection circuit board 12 are arranged in sequence between the shell cover 1 and the base 18.

[0025] The base 18 is rectangular, with a protrusion on its edge, a first mounting ear 19 and a second mounting ear 20 with screw holes on its two parallel sides, a plurality of through holes on it, and a first metal column 21 and a second metal column 22 on its inner surface; the detection circuit board 12 is fixed on the base 18 and connected to the first metal column 21 and the second metal column 22 respectively; the detection circuit board 12 is rectangular, with a notch on one corner, a communication interface 13, a reset button 14 and an indicator light 15 are arranged on one side adjacent to the notch, a signal interface 16 and a fuse 17 are arranged on the opposite side of the side where the communication interface 13 is located, and the detection circuit board 12 is provided with 4 through holes; the discharge circuit board 8 is provided with 4 through holes and each through hole is provided with a double-pass isolation stud, each of the double-pass isolation studs corresponds to the through hole of the detection circuit board 12 one by one, and the discharge circuit board 8 is also provided with a parallel-connected discharge wiring board 11, and the discharge wiring board 11 is provided with a first discharge The fan 6 comprises a shell having a square surface, and the four corners of the shell are respectively provided with through holes, and the through holes on the fan 6 correspond to the through holes on the heat dissipation aluminum plate 7. A plurality of through holes 2 corresponding to the fan are provided on a surface of the shell cover 1 corresponding to the base 18. An irregular opening 5 cooperating with the signal interface 16 and the fuse 17 and a first terminal hole 3 and a second terminal hole 4 cooperating with the first discharge terminal 9 and the second discharge terminal 10 are provided on the other surface of the shell cover 1. An opening 23 cooperating with the communication interface 13 and a button through hole 24 and an indicator light through hole 25 cooperating with the reset button 14 and the indicator light 15 are provided on a parallel surface of the surface where the irregular opening 5 is located. The fan 6, the heat dissipation aluminum plate 7, the discharge circuit board 8 and the detection circuit board 12 are connected by bolts.

[0026] The detection circuit board 12 is provided with a detection circuit, and the detection circuit includes a battery parameter detection module, an analog-to-digital conversion module, a fan control module, a CAN communication module, a control module, a power circuit module and a control and detection module; the control module is respectively connected to the battery parameter detection module, the fan control module, the analog-to-digital conversion module, the power circuit module, the CAN communication module and the control and detection module, the control and detection module is respectively connected to the analog-to-digital conversion module and the power circuit module, the analog-to-digital conversion module is respectively connected to the battery parameter detection module and the power circuit module, the battery parameter detection module is connected to the power circuit module, the fan control module is connected to the power circuit module, and the CAN communication module is connected to the power circuit module.

[0027] like Figure 4As shown, the battery parameter detection module includes a connection terminal J1, the first pin, the second pin, the third pin and the fourth pin of the connection terminal J1 are connected to each other, the first pin of the connection terminal J1 is respectively connected to the positive electrode of the battery, one end of the fuse F1, one end of the resistor R3, one end of the resistor R4 and the positive electrode of the diode D1, the fifth pin of the connection terminal J1 is respectively connected to the positive electrode of the battery and one end of the resistor R5, the sixth pin of the connection terminal J1 is respectively connected to the negative electrode of the battery, one end of the capacitor C2, the grounding capacitor C23, one end of the resistor R9, One end of the resistor R10 is connected to one end of the resistor R12; the 7th pin of the terminal J1 is connected to one end of the thermistor model XH-T107B3950 / 10K and one end of the resistor R30, the grounding capacitor C21 and one end of the resistor R31, the 8th pin of the terminal J1 is connected to the other end of the thermistor and is grounded, the 9th pin, the 10th pin, the 11th pin and the 12th pin of the terminal J1 are connected to each other and are respectively connected to the negative electrode of the battery, the positive electrode of the diode D5, the single-pin terminal J3 and the 3rd pin of the terminal J6 The cathode of the diode D5 is grounded; the other end of the fuse F1 is connected to the single-pin terminal J2, one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R1 is respectively connected to the anode of the diode in the optocoupler U1 of model EL3H7(D)(TA)-G and the other end of the resistor R2, the cathode of the diode in the optocoupler U1 is connected to the third pin of the terminal J6, the collector of the transistor in the optocoupler U1 is respectively connected to the PB7 pin of the control chip U10 in the control module and one end of the resistor R6, the optocoupler U 1, the emitter of the transistor is grounded, and the other end of the resistor R6 is connected to a 3.3V voltage; the other end of the resistor R3 is respectively connected to the other end of the resistor R4 and the positive electrode of the diode in the optocoupler U2 of model EL3H7(D)(TA)-G, the cathode of the diode in the optocoupler U2 is connected to the third pin of the terminal J6, the collector of the transistor in the optocoupler U2 is respectively connected to the PB6 pin of the control chip U10 and one end of the resistor R7, the emitter of the transistor in the optocoupler U2 is grounded, and the other end of the resistor R7 is connected to a 3.3V voltage.

[0028] The cathode of the diode D1 is connected to the +5V voltage through a fuse F2 of model nSMD025-30V, the other end of the resistor R5 is respectively connected to the grounded capacitor C1, the other end of the capacitor C2, one end of the resistor R8, the other end of the resistor R9 and one end of the resistor R11, the other end of the resistor R8 is respectively connected to the reverse input end of the amplifier U12A, the output end of the amplifier U12A and the other end of the resistor R10, the amplifier U12A and the amplifier U12B belong to the first dual operational amplifier chip of model LM358; the other end of the resistor R11 is respectively connected to one end of the capacitor C3 and the AIN0 pin of the analog-to-digital conversion chip U6 of model ADS1220IPW in the analog-to-digital conversion module, the other end of the resistor R12 is respectively connected to the other end of the capacitor C3 and the AIN1 pin of the analog-to-digital conversion chip U6, the other side of the resistor R30 is connected to the 3.3V voltage, and the other end of the resistor R31 is respectively connected to the grounded capacitor C24 and the PA3 pin of the control chip U10.

[0029] like Figure 5 As shown, the control and detection module includes a wiring terminal J6, the first pin of the wiring terminal J6 is respectively connected to the grounding capacitor C51, one end of the resistor R46 and one end of the resistor R47, the other end of the resistor R46 is connected to the 3.3V voltage, the other end of the resistor R47 is respectively connected to the grounding capacitor C52 and the PA0 pin of the control chip U10, the second pin of the wiring terminal J6 is respectively connected to the grounding capacitor C41, one end of the resistor R56 and one end of the resistor R55, the third pin of the wiring terminal J6 is respectively connected to one end of the resistor R68, one end of the resistor R67, the first pin and the second pin of the voltage regulator U11 of model TL432, the fourth pin of the wiring terminal J6 is respectively connected to the grounding capacitor C51, one end of the resistor R46 and one end of the resistor R47, the fourth pin of the wiring terminal J6 ..., the first pin of the voltage regulator U11 of model TL432, the fourth pin of the wiring terminal J6 is respectively connected to the grounding capacitor C51, the second pin of the wiring terminal J6 is respectively connected to the grounding capacitor C51, the first pin of the voltage regulator U11 of model TL432, the fourth pin of the wiring terminal J6 is Capacitor C35, one end of capacitor C36, one end of resistor R48 and one end of resistor R50 are connected, the 5th pin of the wiring terminal J6 is respectively connected to the other end of capacitor C36, grounded capacitor C37, the other end of resistor R49 and one end of resistor R51, the other end of the resistor R48 is respectively connected to the other end of resistor R49, the output end of amplifier U12B and the inverting input end of amplifier U12B, the 6th pin of the wiring terminal J6 is respectively connected to the collector of transistor Q7 of model SS8550 and grounding resistor R44, the 7th pin of the wiring terminal J6 is grounded, and the 8th pin of the wiring terminal J6 is respectively connected to the collector of transistor Q4 of model SS8550 and grounding resistor R25.

[0030] One end of the resistor R55 is connected to the PA4 pin of the control chip U10, the other end of the resistor R56 is respectively connected to the 3rd and 4th pins of the amplifier U9 of model LMV321, the 1st pin of the amplifier U9 is respectively connected to the grounding capacitor C42, the grounding capacitor C43 and one end of the resistor R57, the 2nd pin of the amplifier U9 is grounded, the 5th pin of the amplifier U9 is respectively connected to the 3.3V voltage and the grounding capacitor C65, the other end of the resistor R57 is respectively connected to the grounding capacitor C44 and the resistor One end of the resistor R58 is connected, and the other end of the resistor R58 is connected to the PB4 pin of the control chip U10; the other end of the resistor R68 is respectively connected to the grounding capacitor C50, the positive output end of the amplifier U12A and the positive output end of the amplifier U12B, the 4th pin of the first dual operational amplifier chip is grounded, the 8th pin of the first dual operational amplifier chip is connected to the +5V voltage, the 3rd pin of the voltage regulator U11 is grounded, the other end of the resistor R67 is connected to the cathode of the diode D15, and the anode of the diode D15 is connected to the cathode of the diode D15. The other end of the resistor R50 is respectively connected to one end of the capacitor C39 and the AIN2 pin of the analog-to-digital conversion chip U6, the resistor R51 is respectively connected to the other end of the capacitor C39 and the AIN3 pin of the analog-to-digital conversion chip U6, the base of the transistor Q7 is respectively connected to one end of the resistor R29 and one end of the resistor R45, the emitter of the transistor Q7 is connected to one end of the resistor R26, the other end of the resistor R26 is respectively connected to the +13V voltage and the other end of the resistor R29, the resistor R4 The other end of 5 is connected to the drain of a field effect transistor Q8 of model 2N7002, the source of the field effect transistor Q8 is grounded, the gate of the field effect transistor Q8 is respectively connected to the grounding capacitor C38, the grounding resistor R52 and the second pin of the diode D11 of model MMBD7000, the first pin of the diode D11 is connected to the grounding resistor R53, the third pin of the diode D11 is connected to the other end of the capacitor C40, and the other end of the capacitor C40 is connected to the PB0 pin of the control chip U10 through the resistor R54.

[0031] The base of the transistor Q7 is respectively connected to one end of the resistor R27 and one end of the resistor R28, the emitter of the transistor Q7 is connected to one end of the resistor R24, the other end of the resistor R24 ​​is respectively connected to the +13V voltage and the other end of the resistor R27, the other end of the resistor R28 is connected to the drain of the field effect transistor Q5 with model number 2N7002, the source of the field effect transistor Q5 is grounded, the gate of the field effect transistor Q5 is respectively connected to the grounding capacitor C22, the grounding resistor R32 and the second pin of the diode D6 with model number MMBD7000, the first pin of the diode D6 is connected to the grounding resistor R33, the third pin of the diode D6 is connected to the other end of the capacitor C25, and the other end of the capacitor C25 is connected to the PB1 pin of the control chip U10 through the resistor R34.

[0032] like Figure 6 As shown, the fan control module includes a terminal J5, the first pin of the terminal J5 is respectively connected to the positive electrode of the diode D9 of model 1N4148, the second pin of the amplifier U15 of model LMV321 and the transistor emitter of the optocoupler U8 of model EL3H7(D)(TA)-G, the second pin of the terminal J5 is connected to one end of the resistor R74, and the third pin of the terminal J5 is respectively connected to the collector of the transistor Q6 of model SS8550. The cathode of the diode D9 is connected to the cathode of the diode D9, the collector of the transistor of the optical coupler U8 is connected to one end of the resistor R42 and one end of the resistor R43 respectively, the other end of the resistor R43 is connected to the base of the transistor Q6, the other end of the resistor R42 is connected to the emitter of the transistor Q6 and one end of the inductor L2 respectively, the anode of the diode of the optical coupler U8 is grounded, the cathode of the diode of the optical coupler U8 is connected to the PA15 pin of the control chip U10 through the resistor R41, and the other end of the resistor R74 is connected to the base of the transistor Q6. They are respectively connected to the 3rd pin of the amplifier U15 and one end of the capacitor C66, the other end of the capacitor C66 is connected to the 2nd pin of the amplifier U15, the 1st pin of the amplifier U15 is respectively connected to one end of the resistor R75 and one end of the resistor R76, one end of the resistor R75 is connected to the 2nd pin of the amplifier U15, the other end of the resistor R76 is connected to one end of the inductor L2, the 2nd pin of the amplifier U15 is analog grounded, the 5th pin of the amplifier U15 is respectively connected to one end of the capacitor C67 and one end of the inductor L2, the other end of the capacitor C67 is connected to the 2nd pin of the amplifier U15, the 4th pin of the amplifier U15 is connected to the cathode of the diode of the optocoupler U14 through the resistor R73, the anode of the diode of the optocoupler U14 is connected to one end of the inductor L2, the collector of the transistor of the optocoupler U14 is connected to the 3.3V voltage, and the emitter of the transistor of the optocoupler U14 is respectively connected to the ground resistor R72 and the PB9 pin of the control chip U10.

[0033] like Figure 7 As shown, the CAN communication module includes a CAN bus isolation chip U7 of model ISO1050DUB, the Vcc1 pin of the CAN bus isolation chip U7 is respectively connected to a 3.3 voltage, a grounding capacitor C31 and a grounding capacitor C32, the RXD pin of the CAN bus isolation chip U7 is connected to the PA11 pin of the control chip U10, the TXD pin of the CAN bus isolation chip U7 is connected to the PA12 pin of the control chip U10, the GND1 pin of the CAN bus isolation chip U7 is grounded, the Vcc2 pin of the CAN bus isolation chip U7 is respectively connected to one end of the inductor L2, the grounding capacitor C33 and the grounding capacitor C34, the CANH pin of the CAN bus isolation chip U7 is connected to one end of one side of the common mode inductor T1 of model SMW3225S102HTE, and the common mode The other end of one side of the inductor T1 is respectively connected to one end of a fuse F4 of model JK-SMD0603-005, one end of a TVS diode D10 of model SM6T6V8CA, and one end of a TVS diode D11. The other end of the fuse F4 is connected to the third pin of the terminal J4. The CANL pin of the CAN bus isolation chip U7 is connected to one end of the other side of the common-mode inductor T1. The other end of the other side of the common-mode inductor T1 is respectively connected to one end of a TVS diode D13, the other end of the TVS diode D10, and one end of a fuse F5. The other end of the fuse F5 is connected to the fourth pin of the terminal J4. The GND2 pin of the CAN bus isolation chip U7 is respectively connected to the second pin of the amplifier U15, the other end of the TVS diode D13, and the other end of the TVS diode D14.

[0034] like Figure 8As shown, the analog-to-digital conversion module includes an analog-to-digital conversion chip U6 of model ADS1220IPW, the AVDD pin of the analog-to-digital conversion chip U6 is respectively connected to one end of the capacitor C26, one end of the capacitor C27 and one end of the inductor L6, the other end of the inductor L6 is connected to the 3.3V voltage, the AVSS pin of the analog-to-digital conversion chip U6 is respectively connected to the other end of the capacitor C26, the other end of the capacitor C27 and one end of the inductor L5, the other end of the inductor L5 is grounded, the DIN pin of the analog-to-digital conversion chip U6 is connected to the grounded capacitor C8 and is connected to the PB15 pin of the control chip U10 through a resistor R35, and the DOUT pin of the analog-to-digital conversion chip U6 is connected to the grounded capacitor C8 through a resistor R36. To the PB14 pin of the control chip U10, the SCLK pin of the analog-to-digital conversion chip U6 is connected to the grounding capacitor C7 and is connected to the PB13 pin of the control chip U10 through a resistor R37, the CS pin of the analog-to-digital conversion chip U6 is connected to the grounding capacitor C29 and is connected to the PB12 pin of the control chip U10 through a resistor R38, the DRDY pin of the analog-to-digital conversion chip U6 is connected to the PA8 pin of the control chip U10 through a resistor R39, the CLK pin of the analog-to-digital conversion chip U6 is grounded, the DVDD pin of the analog-to-digital conversion chip U6 is respectively connected to the grounding capacitor C28, the grounding capacitor C30 and the voltage 3.3V, and the DGND pin of the analog-to-digital conversion chip U6 is grounded.

[0035] like Fig. 9As shown, the control module includes a control chip U10 of model STM32F103C8T6, the PA1 pin of the control chip U10 is respectively connected to the grounded thermistor RT1 and one end of the resistor R63, the other end of the resistor R63 is connected to the 3.3V voltage, the PA2 pin of the control chip U10 is respectively connected to the grounded thermistor RT2 and one end of the resistor R64, the other end of the resistor R64 is connected to the 3.3V voltage, the PA6 pin of the control chip U10 is respectively connected to the grounded resistor R60 and one end of the resistor R59, the other end of the resistor R59 is connected to the +5V voltage; the PA13 pin of the control chip U10 is connected to the wiring terminal The 4th pin of J7 is connected, the PA14 pin of the control chip U10 is grounded to the 2nd pin of the wiring terminal J7, the 1st pin of the wiring terminal J7 is connected to the 3.3V voltage, and the 3rd pin of the wiring terminal J7 is grounded; the PD0 pin of the control chip U10 is respectively connected to one end of the crystal oscillator Y1 and the grounding capacitor C45, the PD1 pin of the control chip U10 is respectively connected to the other end of the crystal oscillator Y1 and the grounding capacitor C56, the BOOT0 pin of the control chip U10 is respectively connected to the grounding resistor R69 and one end of the resistor R70, the other end of the resistor R70 is respectively connected to the 3.3V voltage, the VBAT pin of the control chip U10, and the control chip U10 The VVD_1 pin of the control chip U10, the VDD_2 pin of the control chip U10, the VDD_3 pin of the control chip U10 and one end of the inductor L7 are connected, and the other end of the inductor L7 is respectively connected to the grounding capacitor C58, the grounding capacitor C59 and the VDDA pin of the control chip U10; the PB2 pin of the control chip U10 is connected to the grounding resistor R65, the PB8 pin of the control chip U10 is respectively connected to one end of the switch S1, the grounding capacitor C47 and the grounding resistor R66, the PC13 pin of the control chip U10 is connected to the cathode of the light-emitting diode D7 through the resistor R40, the anode of the light-emitting diode D7 is connected to the 3.3V voltage, and the control chip U10 The PC14 pin of the control chip U10 is connected to the cathode of the light-emitting diode D8 through a resistor R61, and the anode of the light-emitting diode D8 is connected to a 3.3V voltage. The PC15 pin of the control chip U10 is connected to the cathode of the light-emitting diode D12 through a resistor R62, and the anode of the light-emitting diode D12 is connected to a 3.3V voltage. The NRST pin of the control chip U10 is respectively connected to a grounding capacitor C60, one end of a resistor R71 and the anode of a diode D16, the other end of the resistor R71 and the cathode of the diode D16 are both connected to a 3.3V voltage, and the VSS_1 pin, VSS_2 pin, VSS_3 pin and VSSA pin of the control chip U10 are all grounded.

[0036] like Fig.10As shown, the power circuit module includes a power chip U4 with a model number of XL6007, a power chip U5 with a model number of XL2596S-5.0E1, an isolated power supply M1 with a model number of B0505LS-1W, and a power chip U13 with a model number of AMS1117-3.3. The +Vin pin of the power chip U5 is respectively connected to the positive electrode of the polarity capacitor C17, one end of the capacitor C19, and the negative electrode of the diode D4. The positive electrode of the diode D4 is connected to the first pin of the terminal J4 through a fuse F3 with a model number of FSMS020-60-R. The output pin of the power chip U5 is respectively connected to the other end of the inductor L2 and the negative electrode of the diode D3. The Feedback pin of the power chip U5 is respectively connected to one end of the capacitor C12, the positive electrode of the polarity capacitor C13, and one end of the inductor L2. The other end of the capacitor C12, the negative electrode of the polarity capacitor C13, the positive electrode of the diode D3, the positive electrode of the power chip U5, and the positive electrode of the diode D4 are connected to the positive electrode of the diode D3. The pin, the GND pin of the power chip U5, the negative electrode of the polarity capacitor C17, the other end of the capacitor C19 and the second pin of the terminal J4 are all connected to the second pin of the amplifier U15.

[0037] The Vin pin of the isolated power supply M1 is respectively connected to one end of the capacitor C18, one end of the capacitor C20 and one end of the inductor L4, the other end of the inductor L4 is connected to one end of the inductor L2, the GND pin of the isolated power supply M1 is respectively connected to the grounded capacitor C16, the other end of the capacitor C18, the other end of the capacitor C20 and the second pin of the amplifier U15, the +Vo pin of the isolated power supply M1 is respectively connected to one end of the inductor L3 and the grounded capacitor C15, the O pin of the isolated power supply M1 is grounded, the other end of the inductor L3 is respectively connected to one end of the resistor R22, one end of the capacitor C14 and the emitter of the transistor Q3 of model SS8550, the collector of the transistor Q3 is a +5V voltage output terminal, and the base of the transistor Q3 is respectively connected to the other end of the capacitor C14, the other end of the resistor R22 and the grounding resistor R23.

[0038] The IN pin of the power chip U13 is respectively connected to the positive electrode of the polarity capacitor C53, the +5V voltage and the grounding capacitor C54, the GND pin of the power chip U13 is grounded, the negative electrode of the polarity capacitor C53 is grounded, the OUT pin of the power chip U13 is a 3.3V voltage output terminal and is respectively connected to the positive electrode of the polarity capacitor C55 and the grounding capacitor C57, and the negative electrode of the polarity capacitor C55 is grounded; the VIN pin of the power chip U4 is respectively connected to one end of the inductor L1, one end of the resistor R21, The positive electrodes of the grounding capacitor C10 and the polarity capacitor C11 are connected to the +5V voltage, the negative electrode of the polarity capacitor C11 is grounded, the EN pin of the power chip U5 is respectively connected to the other end of the resistor R21 and the grounding capacitor C9, the GND pin of the power chip U5 is grounded, the two SW pins of the power chip U5 are connected to each other and are respectively connected to the positive electrode of the diode D2 and the other end of the inductor L1, and the FB pin of the power chip U5 is respectively connected to one end of the resistor R19, one end of the capacitor C6 and the grounding resistor R20 The other end of the diode D2 is respectively connected to the other end of the resistor R19, the other end of the capacitor C6, the positive electrode of the polarity capacitor C5, the grounding capacitor C4, one end of the resistor R17, one end of the resistor R16 and the emitter of the transistor Q2 of model SS8550, the negative electrode of the polarity capacitor C5 is grounded, the other end of the resistor R17 is respectively connected to the PA5 pin of the control chip U10 and the grounding resistor R18, the collector of the transistor Q2 is the +13V voltage output end, and the base of the transistor Q2 is They are respectively connected to one end of the resistor R13 and the other end of the resistor R16. The other end of the resistor R13 is connected to the drain of the field effect transistor Q1 with model number 2N7002. The gate of the field effect transistor Q1 is respectively connected to the grounding resistor R14, one end of the resistor R15 and the Vout pin of the power chip U3 with model number SSP61CN4402MR. The source of the field effect transistor Q1 is grounded, the GND pin of the power chip U3 is grounded, and the Vin pin of the power chip U3 is the +5V voltage output terminal.

[0039] like Fig.11As shown, a discharge circuit is provided on the discharge circuit board 8, and the discharge circuit includes a terminal J8, a first pin of the terminal J8 is connected to one end of the thermistor RT3, a second pin of the terminal J8 is connected to one end of the resistor R88, a third pin of the terminal J8 is respectively connected to one end of the resistor R106, one end of the capacitor C77 and one end of the resistor R109, a fourth pin of the terminal J8 is connected to one end of the resistor R98, a fifth pin of the terminal J8 is connected to the other end of the resistor R98, and a sixth pin of the terminal J8 is respectively connected to one end of the resistor R80, one end of the resistor R101 and the capacitor C77 through the resistor R89. The other end of the wiring terminal J7, one end of the resistor R107 and the 8th pin of the third dual operational amplifier chip of model LM258, the third dual operational amplifier chip includes amplifiers U18A and U18B, the 7th pin of the wiring terminal J8 is respectively connected to one end of the resistor R100, one end of the resistor R77, one end of the resistor R79, one end of the capacitor C69 and the 4th pin of the second dual operational amplifier chip of model LM258, the second dual operational amplifier chip includes amplifiers U17A and U17B, and the 8th pin of the wiring terminal J8 is respectively connected to one end of the resistor R112 and the gate of the field effect transistor Q12 of model SE80160G;The other end of the thermistor RT3 is respectively connected to the other end of the resistor R77 and one end of the resistor R78, the other end of the resistor R78 is respectively connected to the other end of the resistor R79, one end of the resistor R81, one end of the capacitor C68, the grounding resistor R92, the other end of the resistor R106 and the other end of the capacitor C69, the other end of the resistor R81 is respectively connected to the other end of the resistor R80 and one end of the resistor R82, the other end of the resistor R82 is respectively connected to one end of the resistor R83, one end of the resistor R93, the grounding capacitor C73 The positive input terminal of the amplifier U17A is respectively connected to the other end of the resistor R88, one end of the resistor R90, the grounding resistor R91, the other end of the capacitor C68, the positive input terminal of the amplifier U17B, the grounding capacitor C72, the positive input terminal of the amplifier U18A, the positive input terminal of the amplifier U18B and the grounding capacitor C76. The inverting input end of 7A is respectively connected to the grounding resistor R86, the grounding resistor R87 and the source of the field effect transistor Q8 of model SE80160G, the other end of the resistor R84 is respectively connected to the other end of the capacitor C70, the grounding resistor R85 and the gate of the field effect transistor Q8, the drain of the field effect transistor Q8 is respectively connected to one end of the switch KT1 and the drain of the field effect transistor Q9 of model SE50160G, the other end of the switch KT1 is respectively connected to the single-pin terminal J9, one end of the switch KT2 and the drain of Q12, The reverse input end of the amplifier U17B is respectively connected to the grounding resistor R93, the grounding resistor R97 and the source of the field effect transistor Q9, the output end of the amplifier U17B is respectively connected to one end of the capacitor C71, one end of the resistor R94 and the other end of the resistor R93, the other end of the resistor R94 is respectively connected to the other end of the capacitor C71, the grounding resistor R95 and the gate of the field effect transistor Q9, and the other end of the resistor R98 is respectively connected to the single-pin terminal J10, the source of the field effect transistor Q12 and the other end of the resistor R102;The other end of the resistor R90 is respectively connected to the resistor R99 and the third pin of the voltage regulator U16 of model TL432, the first pin and the second pin of the voltage regulator U16 are both grounded, the other end of the resistor R99 is respectively connected to the other end of the resistor R100, the grounded capacitor C75 and the fourth pin of the third dual operational amplifier chip, the inverting input end of the amplifier U18A is respectively connected to the grounded resistor R104, the grounded resistor R105 and the source of the field effect transistor Q10 of model SE50160G, the output end of the amplifier U18A is respectively connected to one end of the capacitor C74, one end of the resistor R102 and the other end of the resistor R101, the The other end is respectively connected to the other end of capacitor C74, grounding resistor R103 and the gate of field effect transistor Q10, and the drain of field effect transistor Q10 is respectively connected to the other end of switch KT2 and the drain of field effect transistor Q11 of model SE50160G; the inverting output end of amplifier U18B is respectively connected to grounding resistor R110, grounding resistor R111 and the source of field effect transistor Q11, the output end of amplifier U18 is respectively connected to one end of capacitor C78, ​​one end of resistor R108 and the other end of resistor R107, and the other end of resistor R108 is respectively connected to the other end of capacitor C78, ​​the other end of resistor R109 and the gate of field effect transistor Q11.;

[0040] The terminal J6 is connected to the terminal J8, the terminal J2 is connected to the terminal J9 and serves as the first discharge terminal 9, the terminal J3 is connected to the terminal J10 and serves as the second discharge terminal 10; the terminal J1 serves as a signal interface 16, the fuse F2 serves as a fuse 17, the terminal J4 serves as a communication interface 13, the switch S1 serves as a reset button 14, the light-emitting diodes D7, D8 and D9 serve as indicator lights 15, and the discharge terminal board 11 is provided with a terminal J8.

[0041] In this embodiment, J1 is connected to the positive and negative electrodes of the battery and the temperature sensor, the positive electrode of the battery connected to J1 is connected to the load circuit board through J2, and the negative electrode of the battery connected to J1 is connected to the load circuit board through J3; J4 is the working power supply and has a communication interface, J5 is the fan interface; J6 is the control signal and current detection signal interface to the load circuit board, and J7 is the program debugging interface.

[0042] The working principle of the present invention is as follows: using a communication interface to connect an external power supply and communicate, powering the entire device through a power circuit module, a control module sending a control signal to a fan control module, thereby controlling the fan to dissipate heat, connecting to a battery and a thermistor for detecting the external temperature of the battery through a battery parameter detection circuit, converting the detected voltage signal through an analog-to-digital conversion module and transmitting it to the control module, and at the same time transmitting the signal sent back by the thermistor to the control module, thereby completing the detection of the battery voltage and external temperature; sending a discharge control signal to a control and detection module through the control module, thereby controlling the discharge circuit to discharge the battery, and at the same time the control and detection module can detect the current of the battery, and a receiving interface of a temperature sensor is provided to realize the detection of the internal temperature of the battery, and when the control chip U10 receives and processes the signal, external communication is performed through a CAN communication circuit.

[0043] The beneficial effects of the present invention are:

[0044] (1) The battery parameter detection circuit of the present invention can measure the voltage and external temperature of the battery.

[0045] (2) The control and detection module of the present invention can realize battery current measurement, and is provided with a battery internal temperature detection interface, which can detect the internal temperature of the battery. At the same time, through the coordinated action of the control module, the discharge circuit can be controlled to realize battery discharge.

[0046] (3) The present invention is provided with a communication circuit to realize CAN communication, and has active heat dissipation to ensure the long-term normal operating temperature of the device.

Claims

1. A battery detection device, characterized in that: The device comprises a rectangular parallelepiped housing, wherein the rectangular parallelepiped housing comprises a housing cover (1) and a base (18) which cooperate with each other; a fan (6), a heat dissipation aluminum plate (7), a discharge circuit board (8) and a detection circuit board (12) are sequentially arranged between the housing cover (1) and the base (18); The base (18) is rectangular, with a protrusion on its edge, a first mounting ear (19) and a second mounting ear (20) with screw holes on its two parallel sides, a plurality of through holes on it, and a first metal column (21) and a second metal column (22) on its inner surface; the detection circuit board (12) is fixed on the base (18) and is connected to the first metal column (21) and the second metal column (22) respectively; the detection circuit board (12) is rectangular, with a notch on one corner, and a communication interface (13), a reset button (13) and a reset button (13) are provided on one side adjacent to the notch. A button (14) and an indicator light (15) are provided on the side opposite to the side where the communication interface (13) is located; a signal interface (16) and a fuse (17) are provided on the detection circuit board (12); four through holes are provided on the discharge circuit board (8) and each through hole is provided with a double-through isolation stud, each of the double-through isolation studs corresponds to a through hole of the detection circuit board (12) in a one-to-one manner; the discharge circuit board (8) is also provided with a discharge wiring board (11) connected in parallel, and the discharge wiring board (11) is provided with a first discharge terminal (9) and a second discharge terminal (10). The heat dissipation aluminum plate (7) is provided with four through holes, and the through holes on the heat dissipation aluminum plate (7) correspond one to one with the through holes on the discharge circuit board (8); the fan (6) comprises a shell with one side being a square, and the four corners of the shell are respectively provided with through holes, and the through holes on the fan (6) correspond one to one with the through holes on the heat dissipation aluminum plate (7); a plurality of through holes (2) corresponding to the fan are provided on one side of the shell cover (1) corresponding to the base (18), and a signal interface (16) and a fuse (18) are provided on the other side of the shell cover (1). 17) and provided with a first terminal hole (3) and a second terminal hole (4) respectively cooperating with a first discharge terminal (9) and a second discharge terminal (10), an opening (23) cooperating with a communication interface (13) and a button through hole (24) and an indicator light through hole (25) respectively cooperating with a reset button (14) and an indicator light (15) are provided on a parallel surface of the surface where the irregular opening (5) is located, and the fan (6), the heat dissipation aluminum plate (7), the discharge circuit board (8) and the detection circuit board (12) are connected by bolts; The detection circuit board (12) is provided with a detection circuit, and the detection circuit comprises a battery parameter detection module, an analog-to-digital conversion module, a fan control module, a CAN communication module, a control module, a power circuit module and a control and detection module; The control module is respectively connected to the battery parameter detection module, the analog-to-digital conversion module, the fan control module, the control and detection module, the CAN communication module and the power circuit module; the control and detection module is respectively connected to the analog-to-digital conversion module and the power circuit module; the analog-to-digital conversion module is respectively connected to the battery parameter detection module and the power circuit module; the battery parameter detection module is connected to the power circuit module; the fan control module is connected to the power circuit module; and the CAN communication module is connected to the power circuit module; The discharge circuit board (8) is provided with a discharge circuit, and the discharge circuit comprises a connection terminal J8, wherein the first pin of the connection terminal J8 is connected to one end of the thermistor RT3, the second pin of the connection terminal J8 is connected to one end of the resistor R88, the third pin of the connection terminal J8 is respectively connected to one end of the resistor R106, one end of the capacitor C77 and one end of the resistor R109, the fourth pin of the connection terminal J8 is connected to one end of the resistor R98, the fifth pin of the connection terminal J8 is connected to the other end of the resistor R98, and the sixth pin of the connection terminal J8 is respectively connected to one end of the resistor R80, one end of the resistor R101 and the capacitor C77 through the resistor R89. The other end of the wiring terminal J7, one end of the resistor R107 and the 8th pin of the third dual operational amplifier chip of model LM258, the third dual operational amplifier chip includes amplifiers U18A and U18B, the 7th pin of the wiring terminal J8 is respectively connected to one end of the resistor R100, one end of the resistor R77, one end of the resistor R79, one end of the capacitor C69 and the 4th pin of the second dual operational amplifier chip of model LM258, the second dual operational amplifier chip includes amplifiers U17A and U17B, and the 8th pin of the wiring terminal J8 is respectively connected to one end of the resistor R112 and the gate of the field effect transistor Q12 of model SE80160G;The other end of the thermistor RT3 is respectively connected to the other end of the resistor R77 and one end of the resistor R78, the other end of the resistor R78 is respectively connected to the other end of the resistor R79, one end of the resistor R81, one end of the capacitor C68, the grounding resistor R92, the other end of the resistor R106 and the other end of the capacitor C69, the other end of the resistor R81 is respectively connected to the other end of the resistor R80 and one end of the resistor R82, the other end of the resistor R82 is respectively connected to one end of the resistor R83, one end of the resistor R93, the grounding capacitor C73 The positive input terminal of the amplifier U17A is respectively connected to the other end of the resistor R88, one end of the resistor R90, the grounding resistor R91, the other end of the capacitor C68, the positive input terminal of the amplifier U17B, the grounding capacitor C72, the positive input terminal of the amplifier U18A, the positive input terminal of the amplifier U18B and the grounding capacitor C76. The inverting input end of 7A is respectively connected to the grounding resistor R86, the grounding resistor R87 and the source of the field effect transistor Q8 of model SE80160G, the other end of the resistor R84 is respectively connected to the other end of the capacitor C70, the grounding resistor R85 and the gate of the field effect transistor Q8, the drain of the field effect transistor Q8 is respectively connected to one end of the switch KT1 and the drain of the field effect transistor Q9 of model SE50160G, the other end of the switch KT1 is respectively connected to the single-pin terminal J9, one end of the switch KT2 and the drain of Q12, The reverse input end of the amplifier U17B is respectively connected to the grounding resistor R93, the grounding resistor R97 and the source of the field effect transistor Q9, the output end of the amplifier U17B is respectively connected to one end of the capacitor C71, one end of the resistor R94 and the other end of the resistor R93, the other end of the resistor R94 is respectively connected to the other end of the capacitor C71, the grounding resistor R95 and the gate of the field effect transistor Q9, and the other end of the resistor R98 is respectively connected to the single-pin terminal J10, the source of the field effect transistor Q12 and the other end of the resistor R102;The other end of the resistor R90 is respectively connected to the resistor R99 and the third pin of the voltage regulator U16 of model TL432, the first pin and the second pin of the voltage regulator U16 are both grounded, the other end of the resistor R99 is respectively connected to the other end of the resistor R100, the grounded capacitor C75 and the fourth pin of the third dual operational amplifier chip, the inverting input end of the amplifier U18A is respectively connected to the grounded resistor R104, the grounded resistor R105 and the source of the field effect transistor Q10 of model SE50160G, the output end of the amplifier U18A is respectively connected to one end of the capacitor C74, one end of the resistor R102 and the other end of the resistor R101, the The other end is respectively connected to the other end of the capacitor C74, the grounding resistor R103 and the gate of the field effect transistor Q10, and the drain of the field effect transistor Q10 is respectively connected to the other end of the switch KT2 and the drain of the field effect transistor Q11 of model SE50160G; the inverting output end of the amplifier U18B is respectively connected to the grounding resistor R110, the grounding resistor R111 and the source of the field effect transistor Q11, the output end of the amplifier U18 is respectively connected to one end of the capacitor C78, ​​one end of the resistor R108 and the other end of the resistor R107, and the other end of the resistor R108 is respectively connected to the other end of the capacitor C78, ​​the other end of the resistor R109 and the gate of the field effect transistor Q11; The control and detection module comprises a terminal J6, wherein the terminal J6 is connected to the terminal J8; the battery parameter detection module comprises a terminal J1, a terminal J2, a terminal J3 and a fuse F2, wherein the terminal J2 is connected to the terminal J9 and serves as a first discharge terminal (9); the terminal J3 is connected to the terminal J10 and serves as a second discharge terminal (10); the terminal J1 serves as a signal interface (16); the fuse F2 serves as a fuse (17); the CAN communication module comprises a terminal J4, wherein the terminal J4 serves as a communication interface (13); the control module comprises a switch S1, a light emitting diode D7 and a light emitting diode D8, wherein the switch S1 serves as a reset button (14); the fan control module comprises a diode D9, wherein the light emitting diode D7, the light emitting diode D8 and the diode D9 serve as indicator lights (15); and the discharge terminal board (11) is provided with a terminal J8.

2. A battery detection device according to claim 1, characterized in that: The battery parameter detection module includes a connection terminal J1, wherein the first pin, the second pin, the third pin and the fourth pin of the connection terminal J1 are connected to each other, the first pin of the connection terminal J1 is respectively connected to the positive electrode of the battery, one end of the fuse F1, one end of the resistor R3, one end of the resistor R4 and the positive electrode of the diode D1, the fifth pin of the connection terminal J1 is respectively connected to the positive electrode of the battery and one end of the resistor R5, the sixth pin of the connection terminal J1 is respectively connected to the negative electrode of the battery, one end of the capacitor C2, the grounding capacitor C23, one end of the resistor R9, the resistor One end of R10 is connected to one end of resistor R12; the 7th pin of the wiring terminal J1 is connected to one end of the thermistor model XH-T107B3950 / 10K and one end of resistor R30, the grounding capacitor C21 and one end of resistor R31, the 8th pin of the wiring terminal J1 is connected to the other end of the thermistor and is grounded, the 9th pin, the 10th pin, the 11th pin and the 12th pin of the wiring terminal J1 are connected to each other and are respectively connected to the negative electrode of the battery, the positive electrode of the diode D5, the single-pin wiring terminal J3 and the 3rd pin of the wiring terminal J6. The cathode of the diode D5 is grounded; the other end of the fuse F1 is connected to the single-pin terminal J2, one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R1 is respectively connected to the anode of the diode in the optocoupler U1 of model EL3H7(D)(TA)-G and the other end of the resistor R2, the cathode of the diode in the optocoupler U1 is connected to the third pin of the terminal J6, the collector of the transistor in the optocoupler U1 is respectively connected to the PB7 pin of the control chip U10 in the control module and one end of the resistor R6, the optocoupler U1 The emitter of the transistor is grounded, and the other end of the resistor R6 is connected to a 3.3V voltage; the other end of the resistor R3 is respectively connected to the other end of the resistor R4 and the positive electrode of the diode in the optocoupler U2 of model EL3H7(D)(TA)-G, the negative electrode of the diode in the optocoupler U2 is connected to the third pin of the wiring terminal J6, the collector of the transistor in the optocoupler U2 is respectively connected to the PB6 pin of the control chip U10 and one end of the resistor R7, the emitter of the transistor in the optocoupler U2 is grounded, and the other end of the resistor R7 is connected to a 3.3V voltage; The cathode of the diode D1 is connected to the +5V voltage through a fuse F2 of model nSMD025-30V, the other end of the resistor R5 is respectively connected to the grounded capacitor C1, the other end of the capacitor C2, one end of the resistor R8, the other end of the resistor R9 and one end of the resistor R11, the other end of the resistor R8 is respectively connected to the reverse input end of the amplifier U12A, the output end of the amplifier U12A and the other end of the resistor R10, the amplifier U12A and the amplifier U12B belong to the first dual operational amplifier chip of model LM358; the other end of the resistor R11 is respectively connected to one end of the capacitor C3 and the AIN0 pin of the analog-to-digital conversion chip U6 of model ADS1220IPW in the analog-to-digital conversion module, the other end of the resistor R12 is respectively connected to the other end of the capacitor C3 and the AIN1 pin of the analog-to-digital conversion chip U6, the other side of the resistor R30 is connected to the 3.3V voltage, and the other end of the resistor R31 is respectively connected to the grounded capacitor C24 and the PA3 pin of the control chip U10.

3. A battery detection device according to claim 2, characterized in that: The first pin of the wiring terminal J6 is respectively connected to the grounding capacitor C51, one end of the resistor R46 and one end of the resistor R47, the other end of the resistor R46 is connected to the 3.3V voltage, the other end of the resistor R47 is respectively connected to the grounding capacitor C52 and the PA0 pin of the control chip U10, the second pin of the wiring terminal J6 is respectively connected to the grounding capacitor C41, one end of the resistor R56 and one end of the resistor R55, the third pin of the wiring terminal J6 is respectively connected to one end of the resistor R68, one end of the resistor R67, the first pin and the second pin of the voltage regulator U11 of model TL432, the fourth pin of the wiring terminal J6 is respectively connected to the grounding capacitor C35, the capacitor C36 The first terminal J6 is connected to one end of the capacitor C36, one end of the resistor R48 and one end of the resistor R50, the 5th pin of the terminal J6 is respectively connected to the other end of the capacitor C36, the grounded capacitor C37, the other end of the resistor R49 and one end of the resistor R51, the other end of the resistor R48 is respectively connected to the other end of the resistor R49, the output end of the amplifier U12B and the inverting input end of the amplifier U12B, the 6th pin of the terminal J6 is respectively connected to the collector of the transistor Q7 of model SS8550 and the grounding resistor R44, the 7th pin of the terminal J6 is grounded, and the 8th pin of the terminal J6 is respectively connected to the collector of the transistor Q4 of model SS8550 and the grounding resistor R25; One end of the resistor R55 is connected to the PA4 pin of the control chip U10, the other end of the resistor R56 is respectively connected to the 3rd and 4th pins of the amplifier U9 of model LMV321, the 1st pin of the amplifier U9 is respectively connected to the grounding capacitor C42, the grounding capacitor C43 and one end of the resistor R57, the 2nd pin of the amplifier U9 is grounded, the 5th pin of the amplifier U9 is respectively connected to the 3.3V voltage and the grounding capacitor C65, the other end of the resistor R57 is respectively connected to the grounding capacitor C44 and the resistor One end of the resistor R58 is connected, and the other end of the resistor R58 is connected to the PB4 pin of the control chip U10; the other end of the resistor R68 is respectively connected to the grounding capacitor C50, the positive output end of the amplifier U12A and the positive output end of the amplifier U12B, the 4th pin of the first dual operational amplifier chip is grounded, the 8th pin of the first dual operational amplifier chip is connected to the +5V voltage, the 3rd pin of the voltage regulator U11 is grounded, the other end of the resistor R67 is connected to the cathode of the diode D15, and the anode of the diode D15 is connected to the cathode of the diode D15. The other end of the resistor R50 is respectively connected to one end of the capacitor C39 and the AIN2 pin of the analog-to-digital conversion chip U6, the resistor R51 is respectively connected to the other end of the capacitor C39 and the AIN3 pin of the analog-to-digital conversion chip U6, the base of the transistor Q7 is respectively connected to one end of the resistor R29 and one end of the resistor R45, the emitter of the transistor Q7 is connected to one end of the resistor R26, the other end of the resistor R26 is respectively connected to the +13V voltage and the other end of the resistor R29, the resistor R4 The other end of 5 is connected to the drain of the field effect transistor Q8 of model 2N7002, the source of the field effect transistor Q8 is grounded, the gate of the field effect transistor Q8 is respectively connected to the grounding capacitor C38, the grounding resistor R52 and the second pin of the diode D11 of model MMBD7000, the first pin of the diode D11 is connected to the grounding resistor R53, the third pin of the diode D11 is connected to the other end of the capacitor C40, and the other end of the capacitor C40 is connected to the PB0 pin of the control chip U10 through the resistor R54; The base of the transistor Q7 is respectively connected to one end of the resistor R27 and one end of the resistor R28, the emitter of the transistor Q7 is connected to one end of the resistor R24, the other end of the resistor R24 ​​is respectively connected to the +13V voltage and the other end of the resistor R27, the other end of the resistor R28 is connected to the drain of the field effect transistor Q5 with model number 2N7002, the source of the field effect transistor Q5 is grounded, the gate of the field effect transistor Q5 is respectively connected to the grounding capacitor C22, the grounding resistor R32 and the second pin of the diode D6 with model number MMBD7000, the first pin of the diode D6 is connected to the grounding resistor R33, the third pin of the diode D6 is connected to the other end of the capacitor C25, and the other end of the capacitor C25 is connected to the PB1 pin of the control chip U10 through the resistor R34.

4. A battery detection device according to claim 3, characterized in that: The fan control module includes a terminal J5, wherein the first pin of the terminal J5 is respectively connected to the anode of a diode D9 of model 1N4148, the second pin of an amplifier U15 of model LMV321, and the emitter of a transistor of an optocoupler U8 of model EL3H7(D)(TA)-G, the second pin of the terminal J5 is connected to one end of a resistor R74, and the third pin of the terminal J5 is respectively connected to the collector and the emitter of a transistor Q6 of model SS8550. The cathode of the diode D9 is connected, the collector of the transistor of the optical coupler U8 is connected to one end of the resistor R42 and one end of the resistor R43 respectively, the other end of the resistor R43 is connected to the base of the transistor Q6, the other end of the resistor R42 is connected to the emitter of the transistor Q6 and one end of the inductor L2 respectively, the anode of the diode of the optical coupler U8 is grounded, the cathode of the diode of the optical coupler U8 is connected to the PA15 pin of the control chip U10 through the resistor R41, and the other end of the resistor R74 is connected to the PA16 pin of the control chip U10 through the resistor R75. The third pin of the amplifier U15 and one end of the capacitor C66 are connected, the other end of the capacitor C66 is connected to the second pin of the amplifier U15, the first pin of the amplifier U15 is respectively connected to one end of the resistor R75 and one end of the resistor R76, one end of the resistor R75 is connected to the second pin of the amplifier U15, the other end of the resistor R76 is connected to one end of the inductor L2, the second pin of the amplifier U15 is analog grounded, the fifth pin of the amplifier U15 is respectively connected to one end of the capacitor C67 and one end of the inductor L2, the other end of the capacitor C67 is connected to the second pin of the amplifier U15, the fourth pin of the amplifier U15 is connected to the cathode of the diode of the optocoupler U14 through the resistor R73, the anode of the diode of the optocoupler U14 is connected to one end of the inductor L2, the collector of the transistor of the optocoupler U14 is connected to a 3.3V voltage, and the emitter of the transistor of the optocoupler U14 is respectively connected to the ground resistor R72 and the PB9 pin of the control chip U10.

5. A battery detection device according to claim 4, characterized in that: The CAN communication module includes a CAN bus isolation chip U7 of model ISO1050DUB, the Vcc1 pin of the CAN bus isolation chip U7 is respectively connected to a 3.3 voltage, a grounding capacitor C31 and a grounding capacitor C32, the RXD pin of the CAN bus isolation chip U7 is connected to a PA11 pin of a control chip U10, the TXD pin of the CAN bus isolation chip U7 is connected to a PA12 pin of a control chip U10, the GND1 pin of the CAN bus isolation chip U7 is grounded, the Vcc2 pin of the CAN bus isolation chip U7 is respectively connected to one end of an inductor L2, a grounding capacitor C33 and a grounding capacitor C34, the CANH pin of the CAN bus isolation chip U7 is connected to one end of a common-mode inductor T1 of model SMW3225S102HTE, and the common-mode inductor T1 is connected to one end of a common-mode inductor T2 of model SMW3225S102HTE. The other end of one side of the inductor T1 is respectively connected to one end of a fuse F4 of model JK-SMD0603-005, one end of a TVS diode D10 of model SM6T6V8CA and one end of a TVS diode D11, the other end of the fuse F4 is connected to the third pin of the terminal J4, the CANL pin of the CAN bus isolation chip U7 is connected to one end of the other side of the common-mode inductor T1, the other end of the other side of the common-mode inductor T1 is respectively connected to one end of a TVS diode D13, the other end of the TVS diode D10 and one end of a fuse F5, the other end of the fuse F5 is connected to the fourth pin of the terminal J4, the GND2 pin of the CAN bus isolation chip U7 is respectively connected to the second pin of the amplifier U15, the other end of the TVS diode D13 and the other end of the TVS diode D14.

6. A battery detection device according to claim 5, characterized in that: The analog-to-digital conversion module includes an analog-to-digital conversion chip U6 of model ADS1220IPW, the AVDD pin of the analog-to-digital conversion chip U6 is respectively connected to one end of a capacitor C26, one end of a capacitor C27 and one end of an inductor L6, the other end of the inductor L6 is connected to a 3.3V voltage, the AVSS pin of the analog-to-digital conversion chip U6 is respectively connected to the other end of the capacitor C26, the other end of the capacitor C27 and one end of an inductor L5, the other end of the inductor L5 is grounded, the DIN pin of the analog-to-digital conversion chip U6 is connected to a grounded capacitor C8 and is connected to a PB15 pin of a control chip U10 through a resistor R35, and the DOUT pin of the analog-to-digital conversion chip U6 is connected to a grounded capacitor C8 and is connected to a PB15 pin of a control chip U10 through a resistor R36. The PB14 pin of the control chip U10, the SCLK pin of the analog-to-digital conversion chip U6 is connected to the grounding capacitor C7 and is connected to the PB13 pin of the control chip U10 through a resistor R37, the CS pin of the analog-to-digital conversion chip U6 is connected to the grounding capacitor C29 and is connected to the PB12 pin of the control chip U10 through a resistor R38, the DRDY pin of the analog-to-digital conversion chip U6 is connected to the PA8 pin of the control chip U10 through a resistor R39, the CLK pin of the analog-to-digital conversion chip U6 is grounded, the DVDD pin of the analog-to-digital conversion chip U6 is respectively connected to the grounding capacitor C28, the grounding capacitor C30 and the voltage 3.3V, and the DGND pin of the analog-to-digital conversion chip U6 is grounded.

7. A battery detection device according to claim 6, characterized in that: The control module includes a control chip U10 of model STM32F103C8T6, wherein the PA1 pin of the control chip U10 is respectively connected to the grounded thermistor RT1 and one end of the resistor R63, and the other end of the resistor R63 is connected to a 3.3V voltage, the PA2 pin of the control chip U10 is respectively connected to the grounded thermistor RT2 and one end of the resistor R64, and the other end of the resistor R64 is connected to a 3.3V voltage, the PA6 pin of the control chip U10 is respectively connected to the grounded resistor R60 and one end of the resistor R59, and the other end of the resistor R59 is connected to a +5V voltage; the PA13 pin of the control chip U10 is connected to the terminal J7. The 4th pin of the control chip U10 is connected, the PA14 pin of the control chip U10 is grounded to the 2nd pin of the wiring terminal J7, the 1st pin of the wiring terminal J7 is connected to the 3.3V voltage, and the 3rd pin of the wiring terminal J7 is grounded; the PD0 pin of the control chip U10 is respectively connected to one end of the crystal oscillator Y1 and the grounding capacitor C45, the PD1 pin of the control chip U10 is respectively connected to the other end of the crystal oscillator Y1 and the grounding capacitor C56, the BOOT0 pin of the control chip U10 is respectively connected to the grounding resistor R69 and one end of the resistor R70, and the other end of the resistor R70 is respectively connected to the 3.3V voltage, the VBAT pin of the control chip U10, and the V The VD_1 pin, the VDD_2 pin of the control chip U10, the VDD_3 pin of the control chip U10 and one end of the inductor L7 are connected, and the other end of the inductor L7 is respectively connected to the grounding capacitor C58, the grounding capacitor C59 and the VDDA pin of the control chip U10; the PB2 pin of the control chip U10 is connected to the grounding resistor R65, the PB8 pin of the control chip U10 is respectively connected to one end of the switch S1, the grounding capacitor C47 and the grounding resistor R66, the PC13 pin of the control chip U10 is connected to the cathode of the light-emitting diode D7 through the resistor R40, the anode of the light-emitting diode D7 is connected to the 3.3V voltage, and the The PC14 pin is connected to the cathode of the light-emitting diode D8 through a resistor R61, and the anode of the light-emitting diode D8 is connected to a 3.3V voltage. The PC15 pin of the control chip U10 is connected to the cathode of the light-emitting diode D12 through a resistor R62, and the anode of the light-emitting diode D12 is connected to a 3.3V voltage. The NRST pin of the control chip U10 is respectively connected to a grounding capacitor C60, one end of a resistor R71 and the anode of a diode D16, and the other end of the resistor R71 and the cathode of the diode D16 are both connected to a 3.3V voltage. The VSS_1 pin, VSS_2 pin, VSS_3 pin and VSSA pin of the control chip U10 are all grounded.

8. A battery detection device according to claim 7, characterized in that: The power circuit module includes a power chip U4 of model XL6007, a power chip U5 of model XL2596S-5.0E1, an isolated power supply M1 of model B0505LS-1W, and a power chip U13 of model AMS1117-3.

3. The +Vin pin of the power chip U5 is respectively connected to the positive electrode of the polarity capacitor C17, one end of the capacitor C19, and the negative electrode of the diode D4. The positive electrode of the diode D4 is connected to the first pin of the terminal J4 through the fuse F3 of model FSMS020-60-R. The output pin of the chip U5 is respectively connected to the other end of the inductor L2 and the negative electrode of the diode D3, the Feedback pin of the power chip U5 is respectively connected to one end of the capacitor C12, the positive electrode of the polar capacitor C13 and one end of the inductor L2, the other end of the capacitor C12, the negative electrode of the polar capacitor C13, the positive electrode of the diode D3, the ON / OFF pin of the power chip U5, the GND pin of the power chip U5, the negative electrode of the polar capacitor C17, the other end of the capacitor C19 and the second pin of the terminal J4 are all connected to the second pin of the amplifier U15; The Vin pin of the isolated power supply M1 is respectively connected to one end of the capacitor C18, one end of the capacitor C20 and one end of the inductor L4, the other end of the inductor L4 is connected to one end of the inductor L2, the GND pin of the isolated power supply M1 is respectively connected to the grounded capacitor C16, the other end of the capacitor C18, the other end of the capacitor C20 and the second pin of the amplifier U15, the +Vo pin of the isolated power supply M1 is respectively connected to one end of the inductor L3 and the grounded capacitor C15, the O pin of the isolated power supply M1 is grounded, the other end of the inductor L3 is respectively connected to one end of the resistor R22, one end of the capacitor C14 and the emitter of the transistor Q3 of model SS8550, the collector of the transistor Q3 is a +5V voltage output terminal, and the base of the transistor Q3 is respectively connected to the other end of the capacitor C14, the other end of the resistor R22 and the grounding resistor R23; The IN pin of the power chip U13 is respectively connected to the positive electrode of the polarity capacitor C53, the +5V voltage and the grounding capacitor C54, the GND pin of the power chip U13 is grounded, the negative electrode of the polarity capacitor C53 is grounded, the OUT pin of the power chip U13 is a 3.3V voltage output terminal and is respectively connected to the positive electrode of the polarity capacitor C55 and the grounding capacitor C57, and the negative electrode of the polarity capacitor C55 is grounded; the VIN pin of the power chip U4 is respectively connected to one end of the inductor L1, one end of the resistor R21, The positive electrodes of the grounding capacitor C10 and the polarity capacitor C11 are connected to the +5V voltage, the negative electrode of the polarity capacitor C11 is grounded, the EN pin of the power chip U5 is respectively connected to the other end of the resistor R21 and the grounding capacitor C9, the GND pin of the power chip U5 is grounded, the two SW pins of the power chip U5 are connected to each other and are respectively connected to the positive electrode of the diode D2 and the other end of the inductor L1, and the FB pin of the power chip U5 is respectively connected to one end of the resistor R19, one end of the capacitor C6 and the grounding resistor R20 The other end of the diode D2 is respectively connected to the other end of the resistor R19, the other end of the capacitor C6, the positive electrode of the polarity capacitor C5, the grounding capacitor C4, one end of the resistor R17, one end of the resistor R16 and the emitter of the transistor Q2 of model SS8550, the negative electrode of the polarity capacitor C5 is grounded, the other end of the resistor R17 is respectively connected to the PA5 pin of the control chip U10 and the grounding resistor R18, the collector of the transistor Q2 is the +13V voltage output end, and the base of the transistor Q2 is They are respectively connected to one end of the resistor R13 and the other end of the resistor R16. The other end of the resistor R13 is connected to the drain of the field effect transistor Q1 with model number 2N7002. The gate of the field effect transistor Q1 is respectively connected to the grounding resistor R14, one end of the resistor R15 and the Vout pin of the power chip U3 with model number SSP61CN4402MR. The source of the field effect transistor Q1 is grounded, the GND pin of the power chip U3 is grounded, and the Vin pin of the power chip U3 is the +5V voltage output terminal.

Images