CN214014250U

CN214014250U - Novel data communication module of battery pack detection equipment

Info

Publication number: CN214014250U
Application number: CN202022998457.XU
Authority: CN
Inventors: 焦道海; 侯宝峰; 徐华电
Original assignee: Changzhou Sino Sea Elecpower Co ltd
Current assignee: Changzhou Sino Sea Elecpower Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-08-20
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a data communication module of a novel battery pack detection device, which comprises a main control circuit and a battery inspection circuit, wherein the main control circuit comprises a microprocessor and a CAN communication module which is interconnected with the microprocessor; the CAN communication module comprises a communication isolation circuit and a CAN communication circuit, the output end of the communication isolation circuit is electrically connected with the input end of the CAN communication circuit, and the input end of the communication isolation circuit is connected with the output end of the microprocessor; the battery inspection circuit comprises a voltage acquisition module and a temperature acquisition module, and the output ends of the voltage acquisition module and the temperature acquisition module are electrically connected with the microprocessor. The data communication module can be compatible with a multi-standard communication protocol through a single communication channel, automatically completes communication standard identification and protocol switching, and realizes communication handshake and parameter configuration; the data communication module also has a data source switching function, and can realize information acquisition and data communication of a battery pack of a nonstandard or battery-free management system by means of a battery inspection circuit.

Description

Novel data communication module of battery pack detection equipment

Technical Field

The utility model relates to a battery package check out test set technical field specifically is a novel battery package check out test set's data communication module.

Background

In recent years, with the deepening of the energy crisis in China, the enhancement of the environmental awareness of the people and the stimulation of the subsidy of government policies, new energy industries such as electric automobiles, hydrogen fuel cell power generation systems, wind-solar integrated energy storage power stations and the like are rapidly developed, the development prospect and the use maturity of batteries serving as core energy storage and energy conversion components in the field are also greatly emphasized, the development of battery production and detection technologies is continuously promoted, the performance detection becomes a necessary link of battery research and development and production processes at present, the electrical properties of batteries to be detected need to be tested in detail according to related national standards in the fields such as brand new battery capacity division pairing, retired battery gradient utilization and the like, and under the requirement, a battery detection device with powerful functions and stable operation is indispensable.

At present, battery detection equipment adopts a differential serial communication scheme of CAN2.0 standard, and compared with the traditional industrial serial communication scheme, the differential serial communication scheme has the advantages of high speed, strong real-time performance, multiple masters and multiple slaves receiving and transmitting arbitration mechanism, and is more comfortable in dealing with a complex communication network. Traditional battery check out test set can't be compatible the brand-new and retired battery package that awaits measuring of different periods, different agreements, different structures on single communication channel, can only carry out customization alone to hardware circuit and software code according to the communication protocol version of battery, condition such as having or not have battery management control panel, undoubtedly can cause system redundancy, use complicacy and cost scheduling problem out of control, based on this, provides a novel battery package check out test set's data communication module.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel battery package check out test set's data communication module realizes communication and shakes hands and parameter configuration, opens battery power circuit relay, for battery package detects provides the prerequisite, provides necessary data support and safety guarantee for the use of battery and detection simultaneously, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a data communication module of novel battery pack detection equipment comprises a main control circuit and a battery inspection circuit, wherein the main control circuit comprises a microprocessor and a CAN communication module, and the CAN communication module is interconnected with the microprocessor; the CAN communication module comprises a communication isolation circuit and a CAN communication circuit, the output end of the communication isolation circuit is electrically connected with the input end of the CAN communication circuit, and the input end of the communication isolation circuit is connected with the output end of the microprocessor; the battery inspection circuit comprises a voltage acquisition module and a temperature acquisition module, and the output ends of the voltage acquisition module and the temperature acquisition module are electrically connected with the microprocessor.

Preferably, the communication isolation circuit adopts a chip U1 as a main chip, the model of the chip U1 is ADUM1201,

pins

2 and 3 of the chip U1 are connected with CAN signal input, and pin 1 of the chip U1 is connected with 3.3V power supply input.

Preferably, the CAN communication circuit adopts a chip U2 as a communication conversion chip, the model of the chip U2 is PCA82C250, pin 1 of the chip U2 is connected with pin 6 of the chip U1, pin 4 of the chip U2 is connected to a +5V power input, pin 7 of the chip U2 is connected to an input end of an inductor LCAN2, and an output end of the inductor LCAN2 outputs a signal; the 8-pin of the chip U2 is connected with the input end of the inductor ACT45B, and the output end of the inductor ACT45B outputs signals.

Preferably, the voltage acquisition module adopts a voltage detection chip U3 as a main chip, the voltage detection chip U3 is of an LTC6811 type, channel expansion is performed in a daisy chain manner, the upper limit of the voltage detection chip U3 is 5VDC, the number of voltage detection channels is 120, and voltage information detected by the voltage detection chip U3 is converted into a standard 4-wire SPI communication signal by an SPI communication mode conversion chip and is uploaded to the microprocessor.

Preferably, the temperature acquisition module adopts a chip U4 as an acquisition chip, the model of the chip U4 is CD4051, the chip U4 performs multi-path check on sampling signals, the output of the chip U4 is connected to an AD special sampling port of the microprocessor, and the number of temperature detection channels is 120.

Preferably, the model of the chip U1 is ADUM 1201.

Compared with the prior art, the beneficial effects of the utility model are as follows:

according to the data communication module of the novel battery pack detection equipment, a single communication channel can be compatible with a multi-standard communication protocol, communication standard identification and protocol switching are automatically completed, communication handshake and parameter configuration are realized, a battery power circuit relay is opened, and necessary conditions are provided for battery pack detection; meanwhile, the data communication module also has a data source switching function, and can realize information acquisition and data communication of a battery pack of a nonstandard or battery-free management system by means of a battery inspection circuit, thereby providing necessary data support and safety guarantee for the use and detection of the battery.

Drawings

FIG. 1 is a schematic block diagram of the present invention;

FIG. 2 is a connection diagram of the communication isolation circuit and the CAN communication circuit of the present invention;

FIG. 3 is a circuit diagram of the temperature acquisition module of the present invention;

fig. 4 is a circuit diagram of the voltage acquisition module of the present invention.

In the figure: 1. a master control circuit; 2. a battery inspection circuit; 3. a microprocessor; 4. a CAN communication module; 41. a communication isolation circuit; 42. a CAN communication circuit; 5. a voltage acquisition module; 6. and a temperature acquisition module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a data communication module of a novel battery pack detection device includes a main control circuit 1 and a battery inspection circuit 2, wherein the main control circuit 1 includes a microprocessor 3 and a CAN communication module 4, and the CAN communication module 4 is interconnected with the microprocessor 3; the CAN communication module 4 comprises a communication isolation circuit 41 and a CAN communication circuit 42, the output end of the communication isolation circuit 41 is electrically connected with the input end of the CAN communication circuit 42, and the input end of the communication isolation circuit 41 is connected with the output end of the microprocessor 3; the battery inspection circuit 2 comprises a voltage acquisition module 5 and a temperature acquisition module 6, and the output ends of the voltage acquisition module 5 and the temperature acquisition module 6 are electrically connected with the microprocessor 3.

Referring to fig. 2, the communication isolation circuit 41 uses a chip U1 as a main chip, the model of the chip U1 is ADUM1201,

pins

2 and 3 of the chip U1 are connected to CAN signal inputs, and pin 1 of the chip U1 is connected to a 3.3V power input.

Referring to fig. 2, the CAN communication circuit 42 adopts a chip U2 as a communication conversion chip, the model of the chip U2 is PCA82C250, pin 1 of the chip U2 is connected to pin 6 of the chip U1, pin 4 of the chip U2 is connected to a +5V power input, pin 7 of the chip U2 is connected to an input terminal of an inductor LCAN2, and an output terminal of the inductor LCAN2 outputs a signal; the 8-pin of the chip U2 is connected with the input end of the inductor ACT45B, and the output end of the inductor ACT45B outputs signals.

Referring to fig. 4, the voltage acquisition module 5 adopts a voltage detection chip U3 as a main chip, the voltage detection chip U3 is LTC6811, channel expansion is performed in a daisy chain manner, the upper limit voltage of the voltage detection chip U3 is 5VDC, the number of voltage detection channels is 120, and voltage information detected by the voltage detection chip U3 is converted into a standard 4-wire SPI communication signal by an SPI communication mode conversion chip and is uploaded to the microprocessor 3.

Referring to fig. 3, the temperature acquisition module 6 adopts a chip U4 as an acquisition chip, the model of the chip U4 is CD4051, the chip U4 performs multi-channel check on sampling signals, the chip U4 outputs an AD dedicated sampling port connected to the microprocessor 3, and the number of temperature detection channels is 120.

According to the data communication module of the novel battery pack detection device, the CAN communication module 4 takes a communication conversion chip PCA82C250 as a core, a differential level signal of serial communication is converted into a transceiving digital signal, meanwhile, in order to guarantee the safety and the anti-interference capability of the device, a communication isolation circuit 41 is adopted, an ADUM1201 chip is taken as a core, a high-low level signal line is connected with a 120 omega matching resistor in parallel, and the circuit topology is as shown in figure 2; the temperature acquisition module 6 adopts a CD4051 chip to perform multipath check on sampling signals, outputs an AD (analog-digital) special sampling port accessed to the microprocessor 3, reduces occupation of the special sampling port of the microprocessor 3, designs the number of temperature detection channels to be 120, can adapt to most of on-service and off-service batteries, and has a group of 8-channel temperature acquisition module electrical topology shown in figure 3; the voltage acquisition module 5 adopts a scheme that a voltage detection chip LTC6811+ SPI communication mode conversion chip LTC6820 is adopted, channel expansion is carried out in a daisy chain mode, the voltage upper limit of a voltage detection chip U3 is 5VDC, the number of voltage detection channels is 120, battery numbers and single cell voltage information of the battery cells are converted into standard 4-wire SPI communication signals through the SPI communication mode conversion chip and are uploaded to the microprocessor 3, and the electrical topology of 1 group of 12 voltage sampling modules is shown in fig. 4; the main control circuit 1 is composed of a microprocessor 3 and a CAN communication module 4, and is responsible for receiving all the operation data of the cell monomers of the battery pack and screening voltage and temperature extreme values through an SPI communication network and an AD sampling port, and uploading the highest voltage of the cell monomers, the lowest voltage of the cell monomers, the highest temperature of the cell monomers and the lowest temperature of the cell monomers to the battery detection equipment in real time through the CAN communication circuit 42 according to a reading instruction of the battery detection equipment to serve as a jump instruction value of an operation process step and a fault early warning threshold value.

In summary, the following steps: according to the data communication module of the novel battery pack detection equipment, a single communication channel can be compatible with a multi-standard communication protocol, communication standard identification and protocol switching are automatically completed, communication handshake and parameter configuration are realized, a battery power circuit relay is opened, and necessary conditions are provided for battery pack detection; meanwhile, the data communication module also has a data source switching function, and can realize information acquisition and data communication of a battery pack of a non-standard or battery-free management system by means of the battery patrol circuit 2, so that necessary data support and safety guarantee are provided for the use and detection of the battery.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel battery package check out test set's data communication module, includes main control circuit (1) and battery and patrols and examines circuit (2), its characterized in that: the main control circuit (1) comprises a microprocessor (3) and a CAN communication module (4), and the CAN communication module (4) is interconnected with the microprocessor (3); the CAN communication module (4) comprises a communication isolation circuit (41) and a CAN communication circuit (42), the output end of the communication isolation circuit (41) is electrically connected with the input end of the CAN communication circuit (42), and the input end of the communication isolation circuit (41) is connected with the output end of the microprocessor (3); the battery inspection circuit (2) comprises a voltage acquisition module (5) and a temperature acquisition module (6), and the output ends of the voltage acquisition module (5) and the temperature acquisition module (6) are electrically connected with the microprocessor (3).

2. The data communication module of the novel battery pack detection device according to claim 1, wherein: the communication isolation circuit (41) adopts a chip U1 as a main chip, pins 2 and 3 of the chip U1 are connected with CAN signal input, and a pin 1 of the chip U1 is connected with 3.3V power supply input.

3. The data communication module of the novel battery pack detection device according to claim 1, wherein: the CAN communication circuit (42) adopts a chip U2 as a communication conversion chip, the model of the chip U2 is PCA82C250, a pin 1 of the chip U2 is connected with a pin 6 of the chip U1, a pin 4 of the chip U2 is connected to +5V power supply input, a pin 7 of the chip U2 is connected with the input end of an inductor LCAN2, and the output end of the inductor LCAN2 outputs signals; the 8-pin of the chip U2 is connected with the input end of the inductor ACT45B, and the output end of the inductor ACT45B outputs signals.

4. The data communication module of the novel battery pack detection device according to claim 1, wherein: the voltage acquisition module (5) adopts a voltage detection chip U3 as a main chip, the type of the voltage detection chip U3 is LTC6811, channel expansion is carried out in a daisy chain mode, the upper limit voltage of the voltage detection chip U3 is 5VDC, the number of voltage detection channels is 120, and voltage information detected by the voltage detection chip U3 is converted into a standard 4-wire SPI communication signal through an SPI communication mode conversion chip and is uploaded to the microprocessor (3).

5. The data communication module of the novel battery pack detection device according to claim 1, wherein: the temperature acquisition module (6) adopts a chip U4 as an acquisition chip, the model of the chip U4 is CD4051, the chip U4 performs multi-path check on sampling signals, the output of the chip U4 is accessed to an AD special sampling port of the microprocessor (3), and the number of temperature detection channels is 120.

6. The data communication module of the novel battery pack detection device according to claim 2, wherein: the model of the chip U1 is ADUM 1201.