Multi-communication type vehicle battery management system function upgrading box

Abstract

The utility model relates to the field of new energy automobiles, and provides a multi-communication-type vehicle battery management system function upgrading box. The box comprises a box body, and a USB interface, a USB-to-serial port circuit, an MCU system, a multi-type communication conversion circuit, a multi-type communication interface, a first voltage stabilizer, a second voltage stabilizer, a level conversion circuit, a nonvolatile memory and a state indicator lamp circuit are arranged in the box body. By adopting multiple types of communication interfaces and a nonvolatile memory with a large storage capacity, the box is compatible with multiple types of communication interfaces and different models of new energy vehicles, the efficiency and reliability of function offline upgrading of the battery management system of the new energy vehicle are improved, the working efficiency of technical workers is also improved, and the working efficiency of the new energy vehicle battery management system is improved. And the vehicle use safety of the vehicle owner is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile field, concretely relates to a vehicle battery management system function upgrade box of many communication types. BACKGROUND

[0002] With new energy automobile industry standard continuously refining, various safety functions are continuously updated, and the battery management system that has been used on the vehicle needs to be functionally upgraded to meet the newly released national standards or industry standards.

[0003] At present, for the stock new energy vehicles that cannot use OTA remote function upgrade, the battery management system function upgrade is roughly divided into the following situations: one is that the vehicle owner performs vehicle maintenance in the 4S store, and the staff performs function upgrade through the system background or the burning and writing host computer provided by the corresponding supplier; two is that the supplier sends an engineer to the location of the vehicle owner to perform function upgrade. Regardless of which method, because the communication methods of different vehicle models are different, and the upgraded functions are different, professional technical personnel need to use the corresponding handheld terminal for the vehicle of the model to perform operation, and for general personnel or beginners, it may be difficult to perform professional operation due to lack of professional operation experience, it is not clear that the vehicle model is matched with the handheld terminal, it is not familiar with how to upgrade, whether the upgrade is successful, whether the program is burned incorrectly, and other factors cause the vehicle to be unable to normally travel. Therefore, when upgrading the battery management system of the new energy vehicle, the handheld terminal or tool suitable for different models of vehicles needs to be configured, more preparation work is invested, the work efficiency of the professional technical personnel is reduced, and there is a certain risk of upgrade failure. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is how to improve the efficiency and reliability of the function offline upgrade of the battery management system of the new energy vehicle.

[0005] The utility model solves the above technical problem by the following technical scheme:

[0006] The utility model provides a vehicle battery management system function upgrade box of many communication types, including box body, USB interface, USB to serial port circuit, MCU system, multi-type communication conversion circuit, multi-type communication interface, first voltage stabilizer, second voltage stabilizer, level conversion circuit, nonvolatile memory, state indicating lamp circuit are set up in the box body,

[0007] The first end of the USB to serial port circuit is connected with the USB interface, and the second end is connected with the MCU system;

[0008] The first end of the multi-type communication conversion circuit is connected with the MCU system, and the second end is connected with the multi-type communication interface;

[0009] The first end of the first voltage stabilizer is connected with the multi-type communication interface, and the second end is connected with the USB-to-serial circuit, the MCU system, the multi-type communication conversion circuit, the level conversion circuit, the second voltage stabilizer and the state indicator lamp circuit.

[0010] The first end of the non-volatile memory is connected with the second voltage stabilizer, and the second end is connected with the level conversion circuit.

[0011] The first end of the level conversion circuit is connected with the MCU system, and the second end is connected with the non-volatile memory.

[0012] The negative electrode of the state indicator lamp circuit is connected with the MCU system.

[0013] Further, the multi-type communication conversion circuit comprises a CAN conversion circuit, an RS485 conversion circuit, an RS232 conversion circuit and a one-wire conversion circuit.

[0014] The input end of the CAN conversion circuit, the RS485 conversion circuit, the RS232 conversion circuit and the one-wire conversion circuit is connected with the MCU system, and the output end is connected with the input end of the multi-type communication interface.

[0015] Further, the pin CANH and the pin CANL of the CAN conversion circuit are connected with the pin V_CANH and the pin V_CANL of the multi-type communication interface respectively, and the pin TXD2 and the pin RXD2 are connected with the pin CAN0_TX and the pin CAN0_RX of the MCU system respectively.

[0016] The pin B and the pin A of the RS485 conversion circuit are connected with the pin B_485 and the pin A_485 of the multi-type communication interface respectively, and the pin RO, the pin RE / DEA and the pin DI are connected with the pin LPURAT0_RX, the pin GPIO17 and the pin LPURAT0_TX of the MCU system respectively.

[0017] The pin T1OUT and the pin R1IN of the RS232 conversion circuit are connected with the pin 232T and the pin 232R of the multi-type communication interface respectively, and the pin R1OUT and the pin T1IN are connected with the pin LPURAT1_RX and the pin LPURAT1_TX of the MCU system respectively.

[0018] The pin COM of the one-wire conversion circuit is connected with the pin OneWrie_COM of the multi-type communication interface, and the pin TX and the pin RX are connected with the pin GPIO18 and the pin GPIO19 of the MCU system respectively.

[0019] The pin UD+ of the USB-to-serial circuit is connected with the pin D+ of the USB interface, and the pin UD- is connected with the pin D- of the USB interface; the pin TXD is connected with the pin LPURAT2_TX of the MCU system, and the pin RXD is connected with the pin LPURAT2_RX of the MCU system.

[0020] The pins A1 to A16 of the level conversion circuit are connected with the GPIO1 to GPIO16 of the MCU system respectively; the pins B1 to B16 are connected with the IO1 to IO16 of the NAND FLASH respectively.

[0021] The state indicator lamp circuit comprises an LED1 (red lamp) and an LED2 (green lamp); the anodes of the LED1 (red lamp) and the LED2 (green lamp) are connected with the pin OUT_1 of the first voltage stabilizer; the cathode of the LED1 (red lamp) is connected with the GPIO20 of the MCU system; and the cathode of the LED2 (green lamp) is connected with the GPIO21 of the MCU system.

[0022] The pins 5V+ and GND of the first voltage stabilizer are connected with the VCC and GND of the USB-to-serial circuit, the MCU system, the CAN conversion circuit, the RS485 conversion circuit, the RS232 conversion circuit and the one-wire bus conversion circuit respectively; the pins 5V+ and GND of the first voltage stabilizer are connected with the VCCA and GND of the level conversion circuit respectively; and the pin 5V+ of the first voltage stabilizer is connected with the anodes of the LED1 (red lamp) and the LED2 (green lamp) in the state indicator lamp circuit 13.

[0023] Preferably, the USB-to-serial circuit adopts a CH340B chip.

[0024] Preferably, the CAN conversion circuit adopts a TJA1042, TJA1043 or TJA1145 chip.

[0025] Preferably, the RS485 conversion circuit adopts a MAX13487E chip.

[0026] Preferably, the RS232 conversion circuit adopts a SP3232EEN chip.

[0027] Preferably, the level conversion circuit adopts a 74LVC4245APW chip.

[0028] The utility model discloses the advantages in that:

[0029] The utility model provides a kind of multi-communication type vehicle battery management system function upgrade box, compatible multiple types communication interface, wide range of application, to do plug and play, even not familiar or operation error, upgrade midway power failure will not affect its original program, upgrade completion has obvious pilot lamp display.Both ensure the vehicle safety of car owner, also improve the work efficiency of technical staff. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the circuit schematic diagram of the multi-communication type vehicle battery management system function upgrade box of the utility model embodiment 1. DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described in the following with the utility model embodiment, obviously, the described embodiment is part of the embodiment of the utility model, not all embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the protection scope of the utility model.

[0032] The technical scheme of the utility model will be further described as follows by combining with the drawings and specific embodiment of specification:

[0033] Embodiment 1

[0034] The utility model provides a kind of multi-communication type vehicle battery management system function upgrade box, including box body and internal circuit, as shown in Figure 1 The circuit includes USB interface 1, USB-to-serial port circuit 2, MCU system 3, CAN conversion circuit 4, RS485 conversion circuit 5, RS232 conversion circuit 6, one-line conversion circuit 7, multi-type communication interface 8, first voltage stabilizer 9, second voltage stabilizer 10, level conversion circuit 11, nonvolatile memory 12, state indicator lamp circuit 13. Among them, first voltage stabilizer and second voltage stabilizer are low-dropout linear voltage stabilizer LDO.

[0035] The UD+ of USB-to-serial port circuit 2 and the D+ of USB interface 1 are connected respectively. For the function of vehicle after upgrading on computer is downloaded to this upgrade box by this USB interface.

[0036] The TXD of USB-to-serial port circuit 2 and the LPURAT2_TX of MCU system 3 are connected respectively.RXD, LPURAT2_RX realizes that USB signal is converted into TTL serial port level, and it is convenient for MCU identification.

[0037] The USB-to-serial circuit 2 can use CH340B.

[0038] The MCU system 3 is used for processing the storage and forwarding of functions, the conversion of all signal types, the safe access and version identification of functions, the judgment of the upgrade process, the state indication processing, etc.

[0039] The CANH and CANL of the CAN conversion circuit 4 are connected with the V_CANH and V_CANL of the multi-type communication interface 8 respectively. The information interaction and program upgrade between the upgrade box and the vehicle with the CAN bus type interface are realized.

[0040] The TXD2 and RXD2 of the CAN conversion circuit 4 are connected with the CAN0_TX and CAN0_RX of the MCU system 3 respectively. The UART communication is converted into the CAN communication type.

[0041] The CAN conversion circuit 4 can use TJA1042, TJA1043, TJA1145, etc.

[0042] The B and A of the RS485 conversion circuit 5 are connected with the B_485 and A_485 of the multi-type communication interface 8 respectively. The information interaction and program upgrade between the upgrade box and the vehicle with the 485 bus type interface are realized.

[0043] The RO, RE / DEA and DI of the RS485 conversion circuit 5 are connected with the LPURAT0_RX, GPIO17 and LPURAT0_TX of the MCU system 3 respectively. The UART communication is converted into the RS485 communication type.

[0044] The RS485 conversion circuit 5 can use MAX13487E.

[0045] The T1OUT and R1IN of the RS232 conversion circuit 6 are connected with the 232T and 232R of the multi-type communication interface 8 respectively. The information interaction and program upgrade between the upgrade box and the vehicle with the 232 bus type interface are realized.

[0046] The R1OUT and T1IN of the RS232 conversion circuit 6 are connected with the LPURAT1_RX and LPURAT1_TX of the MCU system 3 respectively, realizing the conversion of the UART communication into the RS232 communication type.

[0047] The RS232 conversion circuit 6 can use SP3232EEN.

[0048] The COM of the one-line conversion circuit 7 is connected to the OneWrie_COM of the multi-type communication interface 8, so as to realize information exchange and program upgrade between the upgrade box and the vehicle with the one-line type interface.

[0049] The TX and RX of the one-line conversion circuit 7 are respectively connected to the GPIO 18 and GPIO 19 of the MCU system 3, so as to realize the conversion of TTL communication to one-line communication type.

[0050] The multi-type communication interface 8 brings out the 12V power supply, CAN communication, RS485 communication, RS232 communication, and one-line communication all through one interface. This interface enables the upgrade box to exchange information and upgrade programs with vehicles with different communication type interfaces, and provides power to the upgrade box through this interface.

[0051] The IN_1 and GND of the first voltage regulator 9 are respectively connected to the 12V+ and GND of the multi-type communication interface 8. The OUT_1 and GND of the first voltage regulator 9 are respectively connected to the 5V+ and GND, thereby achieving the conversion from 12V power supply to 5V power supply.

[0052] The 5V+ and GND outputs of the first voltage regulator 9 are connected to the VCC and GND of the USB-to-serial port circuit 2, MCU system 3, CAN conversion circuit 4, RS485 conversion circuit 5, RS232 conversion circuit 6, and one-line conversion circuit 7, respectively. The 5V+ and GND outputs of the first voltage regulator 9 are connected to the VCCA and GND of the level conversion circuit 11, respectively. The 5V+ output of the first voltage regulator 9 is connected to the positive electrodes of LED1 (red light) and LED2 (green light) in the status indicator circuit 13, providing the 5V power required for circuit operation.

[0053] IN_2 and GND of the second voltage stabilizer 10 are connected to 5V+ and GND outputted by the first voltage stabilizer 9 respectively, thereby achieving the conversion from 5V power supply to 3.3V power supply.

[0054] The 3.3V+ and GND outputs of the second voltage regulator 10 are connected to the VCC1 and GND of the non-volatile memory 12, respectively; the 3.3V+ and GND outputs of the second voltage regulator 10 are connected to the VCCB and GND of the level shifter circuit 11, respectively, to provide the 3.3V power required for circuit operation.

[0055] The A1 to A16 of the level conversion circuit 11 are connected with the GPIO1 to GPIO16 of the MCU system 3 respectively; the B1 to B16 of the level conversion circuit 11 are connected with the IO1 to IO16 of the nonvolatile memory 12 respectively; and the level conversion circuit 11 is used for converting 5V level signal into 3.3V level signal, realizing data connection and communication between different levels.

[0056] The level conversion circuit 11 can use 74LVC4245APW.

[0057] The nonvolatile memory 12 can use MT29F32G08CBADBWPR, which can save data after power off, has a storage capacity of 32Gbit, is used for storing various types of vehicle upgrading functions, has a 16-bit data interface, supports multi-channel parallel read and write, has fast data reading speed, and saves function upgrading time.

[0058] The state indicating lamp circuit 13 is provided with two LED lamps, which are LED1 (red lamp) and LED2 (green lamp) respectively. The LED1 (red lamp) flashes to represent that the function upgrading of the upgrading box is in progress, the LED1 (red lamp) is always on to represent that the function upgrading fails, and the LED2 (green lamp) is always on to represent that the function upgrading succeeds.

[0059] The negative electrode of the LED1 (red lamp) of the state indicating lamp circuit 13 is connected with the GPIO20 of the MCU system 3, and the negative electrode of the LED2 (green lamp) is connected with the GPIO21 of the MCU system 3; and the tool state indication of the upgrading box is realized.

[0060] The above embodiment is only used for describing the technical scheme of the utility model, and is not limited to it; although the utility model is described in detail with reference to the foregoing embodiment, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiment, or make equivalent replacement to part of the technical features; and the modification or replacement does not make the essence of the corresponding technical scheme deviate from the spirit and range of the technical scheme of the utility model embodiments.

Claims

1. A multi-communication type vehicle battery management system function upgrade box, characterized in that: The device comprises a box body, wherein the box body is provided with: a USB interface, a USB to serial port circuit, an MCU system, a multi-type communication conversion circuit, a multi-type communication interface, a first voltage stabilizer, a second voltage stabilizer, a level conversion circuit, a non-volatile memory, and a status indicator light circuit; The first end of the USB-to-serial port circuit is connected to the USB interface, and the second end is connected to the MCU system; The first end of the multi-type communication conversion circuit is connected to the MCU system, and the second end is connected to the multi-type communication interface; The first end of the first voltage regulator is connected to the multi-type communication interface, and the second end is connected to the USB to serial port circuit, the MCU system, the multi-type communication conversion circuit, the level conversion circuit, the second voltage regulator, and the status indicator circuit; The first end of the non-volatile memory is connected to the second voltage regulator, and the second end is connected to the level conversion circuit; The first end of the level conversion circuit is connected to the MCU system, and the second end is connected to the non-volatile memory; The negative electrode of the status indicator light circuit is connected to the MCU system.

2. A multi-communication type vehicle battery management system function upgrade box according to claim 1, characterized in that: The multi-type communication conversion circuit includes a CAN conversion circuit, an RS485 conversion circuit, an RS232 conversion circuit, and a one-line conversion circuit; The input ends of the CAN conversion circuit, RS485 conversion circuit, RS232 conversion circuit, and one-line conversion circuit are all connected to the MCU system, and the output ends are all connected to the input ends of the multi-type communication interface.

3. A multi-communication type vehicle battery management system function upgrade box according to claim 2, characterized in that: The pins CANH and CANL of the CAN conversion circuit are respectively connected to the pins V_CANH and V_CANL of the multi-type communication interface; the pins TXD2 and RXD2 are respectively connected to the pins CAN0_TX and CAN0_RX of the MCU system.

4. The multi-communication type vehicle battery management system function upgrade box according to claim 2, characterized in that: Pins B and A of the RS485 conversion circuit are respectively connected to pins B_485 and A_485 of the multi-type communication interface; pins RO, RE / DEA, and DI are respectively connected to LPURAT0_RX, GPIO17, and LPURAT0_TX of the MCU system.

5. The multi-communication type vehicle battery management system function upgrade box according to claim 2, characterized in that: The pins T1OUT and R1IN of the RS232 conversion circuit are respectively connected to the pins 232T and 232R of the multi-type communication interface; the pins R1OUT and T1IN are respectively connected to the pins LPURAT1_RX and LPURAT1_TX of the MCU system.

6. The multi-communication type vehicle battery management system function upgrade box according to claim 2, characterized in that: The pin COM of the one-line conversion circuit is connected to the pin OneWrie_COM of the multi-type communication interface; the pins TX and RX are connected to the pins GPIO18 and GPIO19 of the MCU system respectively.

7. The multi-communication type vehicle battery management system function upgrade box according to claim 1, characterized in that: The pins UD+ and UD- of the USB to serial port circuit are connected to the pins D+ and D- of the USB interface respectively; the pins TXD and RXD are connected to the pins LPURAT2_TX and LPURAT2_RX of the MCU system respectively.

8. The multi-communication type vehicle battery management system function upgrade box according to claim 1, characterized in that: Pins A1 to A16 of the level conversion circuit are connected to GPIO1 to GPIO16 of the MCU system respectively; and pins B1 to B16 are connected to IO1 to IO16 of the non-volatile memory respectively.

9. The multi-communication type vehicle battery management system function upgrade box according to claim 1, characterized in that: The status indicator light circuit includes LED1 and LED2; the positive poles of LED1 and LED2 are both connected to the pin OUT_1 output by the first regulator; the negative pole of LED1 is connected to GPIO20 of the MCU system; and the negative pole of LED2 is connected to GPIO21 of the MCU system.

10. The multi-communication type vehicle battery management system function upgrade box according to claim 1, characterized in that: The pins 5V+ and GND of the first voltage regulator are respectively connected to the VCC and GND of the USB to serial port circuit, MCU system, CAN conversion circuit, RS485 conversion circuit, RS232 conversion circuit, and one-line conversion circuit; the pins 5V+ and GND of the first voltage regulator are respectively connected to the VCCA and GND of the level conversion circuit; the pin 5V+ of the first voltage regulator is connected to the positive poles of LED1 and LED2 in the status indicator light circuit.

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