CN211577365U - A meso position machine for intelligent battery test - Google Patents

Abstract

The utility model discloses a meso position machine for intelligent battery test, fill electric pile unit, the parallelly connected unit of passageway, off-line operation unit, outage recovery unit and supplementary sampling unit including intelligence thing networking communication control unit, third party interface unit, simulation. The utility model discloses a middle position machine, which can firstly realize the transfer function between an upper computer and a lower computer; secondly, the system also participates in the management of the lower computer, realizes the functions of parallel connection, offline, simulation of charging piles and the like of the lower computer, and releases hardware and software resources of the lower computer, so that the charging and discharging control of the lower computer is simpler and more reliable; still provide abundant interface once more, nimble extension third party equipment, such as BMS, pressure sensor, step-in incubator, direct current controllable power etc..

Description

A meso position machine for intelligent battery test

Technical Field

The utility model belongs to battery test field, in particular to a well machine for intelligent battery test in this field.

Background

The secondary battery is widely applied to a plurality of fields such as communication, traffic, military, electric power and the like, and the charge and discharge test is a key link in the manufacturing process of the secondary battery, so that the expansibility, reliability and safety of a charge and discharge test system are very important for improving the research and production efficiency of the secondary battery. The battery charging and discharging test system generally comprises an upper computer, a middle computer and a lower computer. The upper computer is a man-machine interaction interface of the whole system and is a direct tool for a user to operate, check, analyze and manage. The lower computer is an execution mechanism of the test system, executes a corresponding control flow according to the test task, and controls the channel to charge and discharge. The middle computer is a communication bridge between the upper computer and the lower computer, and the function of the middle computer is very key. At present, the middle position machine of most test systems only has a transparent transmission function, and the overall performance of the system is not improved through the middle position machine. The middle position machine generally functions as a communication transfer station. Some lower computers adopt RS485 communication, some lower computers adopt CAN communication, and most of the communication between the middle computer and the upper computer is a network interface, so that the middle computer performs interface conversion (RS 485/CAN conversion network) in the system. In practical application, most of the middle computers are only interface conversion, transmit data of the upper computer and the lower computer and do not participate in system functions of battery testing.

In the existing test system, the middle computer only conducts transparent transmission, the advantages of the middle computer are not exerted, and the defects are as follows:

generally, a test system has several or dozens of channels of lower computers, and most users want to realize the function of parallel connection of the channels among the lower computers of the battery test equipment (namely, output lines are connected together to output current), so that the current output capability of the lower computers is expanded. The general test system realizes parallel connection through communication between lower computers or data processing of the upper computers, and the two modes have the defects. The lower computers are connected in parallel: the lower computers need to communicate with each other to coordinate current and merge data, so that the occupancy rate of the communication bus of the lower computers is increased; the upper computer realizes parallel connection: only by simple data combination, the current output cannot be controlled from the bottom layer, and unreliable factors are added to the system. At present, offline (disconnected with an upper computer) data of a test system is mostly stored in an SD (secure digital) card of the lower computer, but the offline is an abnormal condition which rarely occurs, even if the offline occurs, the offline data lasts for a short time, one SD card of the test system is enough to store the offline data, and dozens of channels of the lower computer are provided with the SD card, so that resources are greatly wasted; before the battery pack leaves a factory, a charge-discharge cycle test needs to be carried out, but at the moment, the battery pack is installed, and a charging port is generally a standard charging gun interface. When discharging, the battery test system is used for discharging, when charging, a charging pile needs to be additionally connected for communicating with an internal BMS for charging, and the wiring is inconvenient to move back and forth; at present, the testing task of a user is more and more complex and more intelligent, a common testing system generally only supports an extended BMS interface, and other third-party equipment is not flexible to extend.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a well machine for intelligent battery test is provided exactly.

The utility model adopts the following technical scheme:

in a meso-position machine for intelligent battery testing, the improvement comprising: the intelligent charging system comprises an intelligent Internet of things communication control unit, a third-party interface unit, a simulation charging pile unit, a channel parallel unit, an offline operation unit, a power failure recovery unit and an auxiliary sampling unit.

Further, the devices that the mid-position machine third party interface unit can access include, but are not limited to, BMS, walk-in incubator, dc controllable power supply and battery pressure sensor.

Furthermore, the middle-bit circuit comprises an Ethernet communication circuit, a CAN communication circuit, an RS485 communication circuit, an RS232 circuit, an SPI circuit, an ADC circuit, a USB circuit and an SD card circuit.

The testing method uses the central computer, and the improvement is as follows: the middle computer transmits a task file containing charging and discharging control parameters edited by a user of the upper computer to the lower computer, and uploads charging and discharging data such as current, voltage, capacity and time interval collected by the lower computer to the upper computer.

Further, the middle computer is communicated with the upper computer, receives, processes and forwards the commands of the upper computer, stores task files and uploads the data of the lower computer; the middle computer is communicated with the lower computer: sending a lower computer command, receiving lower computer data, keeping the operation of the lower computer not stopped when the lower computer is offline, and storing the offline data; the middle position machine stores task file information, offline data information and channel parallel information, after power failure recovery, the middle position machine reestablishes connection with the upper position machine, reads the existing settings and recovers operation; the middle computer can manage the random parallel operation among the channels of the online lower computers and receive the channel parallel command; saving channel parallel information; analyzing and merging the lower computer data of the parallel channels; controlling the execution and the skip of the tasks of the lower computers of the parallel channels; the middle computer acquires auxiliary voltage and auxiliary temperature data sampled by the auxiliary channel, uploads the auxiliary voltage and auxiliary temperature data to the upper computer and supports off-line operation; the central computer sends system operation key information to the Internet of things system, so that a user can conveniently obtain the system operation key information in time; simulating real-time communication between the charging pile and the battery pack BMS by the middle computer, and controlling the lower computer to operate in a charging pile mode; the middle computer can control the operation and the skip of the lower computer according to the third party information, and can control and adjust the output of the third party equipment along with the battery test task, so that the automatic operation is realized.

The utility model has the advantages that:

the utility model discloses a middle position machine and a test method thereof, which can firstly realize the transfer function between an upper computer and a lower computer; secondly, the system also participates in the management of the lower computer, realizes the functions of parallel connection, offline, simulation of charging piles and the like of the lower computer, and releases hardware and software resources of the lower computer, so that the charging and discharging control of the lower computer is simpler and more reliable; abundant interfaces are provided again, third-party equipment such as a BMS (battery management system), a pressure sensor, a walk-in incubator, a direct-current controllable power supply and the like are flexibly expanded, the third-party information can be acquired to control the equipment to run and jump, the output of the third-party equipment can be adjusted along with a battery test task, intelligent control is realized, and the requirement of a user on a complex test task is met; and finally, the equipment can be accessed to the Internet of things management platform through an intelligent data acquisition terminal in the battery test system, the operation information is collected to the cloud platform and is timely presented to the user by the mobile application, and the test safety is greatly improved.

Drawings

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

fig. 2 is a circuit block diagram of the central computer of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1, as shown in fig. 1, this embodiment discloses a middle position machine for testing of intelligent battery, including intelligent thing networking communication control unit, third party interface unit, simulation fill electric pile unit, the parallel unit of passageway, off-line operation unit, outage recovery unit and supplementary sampling unit.

In this embodiment, the devices that the mid-station third party interface unit can access include, but are not limited to, a BMS, a walk-in incubator, a dc controllable power supply, and a battery pressure sensor.

In this embodiment, the core ARM chip of the middle bit machine selects LPC1788, and a circuit block diagram is shown in fig. 2, where the middle bit machine circuit includes an ethernet communication circuit, a CAN communication circuit, an RS485 communication circuit, an RS232 circuit, an SPI circuit, an ADC circuit, a USB circuit, and an SD card circuit.

In the battery test system, a middle computer is a transmission link between an upper computer and a lower computer, the embodiment also discloses a test method, the middle computer is used for transmitting a task file containing charge and discharge control parameters edited by a user of the upper computer to the lower computer, and uploading charge and discharge data such as current, voltage, capacity, time interval and the like collected by the lower computer to the upper computer.

The middle computer is communicated with the upper computer, receives, processes and forwards the commands of the upper computer, saves the task file and uploads the data of the lower computer; the middle computer is communicated with the lower computer: sending a lower computer command, receiving lower computer data, keeping the operation of the lower computer not stopped when the lower computer is offline, and storing the offline data; and (3) power failure recovery: the middle position machine stores task file information, offline data information and channel parallel information, after power failure recovery, the middle position machine reestablishes connection with the upper position machine, reads the existing settings and recovers operation; the channels are connected in parallel: the middle computer can manage the random parallel operation among the channels of the online lower computers and receive the channel parallel command; saving channel parallel information; analyzing and merging the lower computer data of the parallel channels; controlling the execution and the skip of the tasks of the lower computers of the parallel channels; auxiliary sampling: the middle computer acquires auxiliary voltage and auxiliary temperature data sampled by the auxiliary channel, uploads the auxiliary voltage and auxiliary temperature data to the upper computer and supports off-line operation; communication of the Internet of things: the central computer sends system operation key information to the Internet of things system, so that a user can conveniently obtain the system operation key information in time; the simulation fills electric pile function: simulating real-time communication between the charging pile and the battery pack BMS by the middle computer, and controlling the lower computer to operate in a charging pile mode; the middle computer can control the operation and the skip of the lower computer according to the third party information, and can control and adjust the output of the third party equipment along with the battery test task, so that the automatic operation is realized.

The middle position machine and the test method thereof disclosed by the embodiment have the following advantages:

the channels of the master control lower computers of the middle computer are managed in parallel, and the output operation mode of the lower computers is consistent with that of the single channel, so that the control is simple, and the communication traffic on a plurality of buses is reduced; the upper computer receives the merged data, the display processing flow is unified, the current control is still controlled by the lower computer at the bottommost layer, and the method is simple and reliable; the central computer can control the lower computer channels to be connected in parallel at will to enlarge the current output capability. When the user needs the channels to be connected in parallel, the middle computer controls the current distribution of the lower computer, combines the data of the lower computer and controls the jump and the cut-off of the test task of the lower computer

Managing the lower computer offline by the middle computer: when the off-line data is disconnected with the upper computer, the off-line data is stored by the middle computer, so that the cost can be saved, and the resource waste can be reduced; when the off-line data is disconnected with the upper computer, the middle computer sends a heartbeat command to the lower computer to maintain the continuous operation of the lower computer, the off-line data is stored, and the off-line data is uploaded when the off-line data is connected with the upper computer again.

The middle position machine realizes the simulation and fills the electric pile function: the middle-position machine simulates the communication between the charging pile and the BMS in the battery pack and controls the lower-position machine to charge the battery pack, so that the testing system can charge the battery pack before leaving a factory and can discharge the battery pack, and the testing system is very convenient;

the central computer acquires a third-party equipment control test system: the middle computer can provide interface extensions such as BMS, pressure sensors and the like, and acquires information of third-party equipment to control the jumping and stopping of the test task (such as task jumping or task stopping protection executed according to BMS single voltage or battery pressure). The central computer intelligently controls third-party equipment: the central computer expands third-party equipment such as a step-in incubator, a direct-current controllable power supply and the like, can adjust the output of the third-party equipment (for example, adjusting the temperature of the incubator by 25 ℃ during discharging) by combining a battery test task, and realizes intelligent control.

The central computer can access the equipment into the Internet of things management platform through an intelligent data acquisition terminal in the battery test system, the operation information is collected to the cloud platform and is timely presented to a user through mobile application, and the test safety is greatly improved.

Claims (3)

1. The utility model provides a well machine for intelligent battery test which characterized in that: the intelligent charging system comprises an intelligent Internet of things communication control unit, a third-party interface unit, a simulation charging pile unit, a channel parallel unit, an offline operation unit, a power failure recovery unit and an auxiliary sampling unit.

2. The central computer for intelligent battery testing according to claim 1, characterized in that: the equipment that the third party interface unit of the central computer can be accessed comprises a BMS, a step-in incubator, a direct-current controllable power supply and a battery pressure sensor.

3. The central computer for intelligent battery testing according to claim 1, characterized in that: the middle-position circuit comprises an Ethernet communication circuit, a CAN communication circuit, an RS485 communication circuit, an RS232 circuit, an SPI circuit, an ADC circuit, a USB circuit and an SD card circuit.

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