CN109507603A - A kind of power battery external characteristics test method and system - Google Patents
A kind of power battery external characteristics test method and system Download PDFInfo
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- CN109507603A CN109507603A CN201811509758.2A CN201811509758A CN109507603A CN 109507603 A CN109507603 A CN 109507603A CN 201811509758 A CN201811509758 A CN 201811509758A CN 109507603 A CN109507603 A CN 109507603A
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Abstract
The present invention provides a kind of power battery external characteristics test method and system, the system includes: that host computer one end is connect with power battery, the connection of one end of the other end and charging/discharging apparatus, for reading the value of feedback of power battery in real time, and value of feedback is converted to the requirements of the charging/discharging apparatus, requirements are sent to charging/discharging apparatus.The other end of charging/discharging apparatus is connect with three phase mains, and the anode of charging/discharging apparatus is connect with the anode and power analyzer of power battery respectively, and the cathode connection of cathode and power battery carries out charge and discharge to power battery for being based on requirements.Power analyzer, for acquiring the charging and discharging currents, voltage and power of charging/discharging apparatus, until obtaining the external characteristic curve of power battery.In scheme provided by the invention, by the value of feedback acquired in real time, the requirements for adjusting charging/discharging apparatus carry out charge-discharge test to power battery, obtain the external characteristic curve of power battery, improve the accuracy of charge-discharge test.
Description
Technical field
The present invention relates to the field of test technology, and in particular to a kind of power battery external characteristics test method and system.
Background technique
With the development of science and technology, automobile has become one of main transport facility, such as electric car.Electricity
The energy source of driving device and other subsidiary engines in electrical automobile is power battery, and therefore, the external characteristics for testing power battery is
Electric car production a part mostly important with research and development.
At present for the test method of power battery, mainly using charging/discharging apparatus with constant charging and discharging currents and function
The external characteristic curve of rate test power battery.But power battery different voltages and state-of-charge (State Of Charge,
SOC) corresponding maximum charging and discharging currents and power are all different under value.Therefore, it goes to survey with constant charging and discharging currents and power
The external characteristic curve that examination power battery obtains is inaccurate.
Therefore, the problems such as technology of existing test power battery external characteristics is low there are test accuracy.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of power battery external characteristics test method and system, it is existing to solve
Test power battery external characteristics technology it is low there are test accuracy the problems such as.
To achieve the above object, the embodiment of the present invention provides the following technical solutions:
First aspect of the embodiment of the present invention discloses a kind of power battery external characteristics test macro, the system comprises: on
Position machine, charging/discharging apparatus and power analyzer；
Described host computer one end is connect with power battery, and the other end is connect with one end of the charging/discharging apparatus, for real
When read the value of feedback of the power battery, and the value of feedback is converted to the requirements of the charging/discharging apparatus, will be described
Requirements are sent to the charging/discharging apparatus, and the value of feedback includes the maximum allowable charging and discharging currents and function of the power battery
Rate；
The other end of the charging/discharging apparatus is connect with three phase mains, and the anode of the charging/discharging apparatus is moved with described respectively
The anode of power battery is connected with the power analyzer, and the cathode of the cathode of the charging/discharging apparatus and the power battery connects
It connects, for being based on the requirements, charge and discharge is carried out to the power battery；
The power analyzer, for acquiring the charging and discharging currents, voltage and power of the charging/discharging apparatus, until obtaining
The external characteristic curve of the power battery.
Optionally, the host computer by controller local area network's CAN bus respectively with the power battery, the charge and discharge
Electric equipment connection.
Optionally, the charging/discharging apparatus by charge and discharge high-voltage line respectively with the power battery, power analyzer and
Three phase mains connection.
Optionally, the host computer includes: processor and Two Channels CAN address card；
Processor, the value of feedback sent for receiving the Two Channels CAN address card, the value of feedback is converted to
The requirements are sent to the Two Channels CAN address card by the requirements；
Two Channels CAN address card, one end are connect with power battery, and the other end is connect with the charging/discharging apparatus, for real
When read the value of feedback of the power battery, the value of feedback is sent to the processor, receives the processor hair
The requirements sent, and the requirements are sent to the charging/discharging apparatus.
Optionally, the system also includes:
Memory is connect with the host computer, for storing the packet for the power battery that the host computer is read in real time
Value of feedback containing maximum allowable charging and discharging currents and power.
Second aspect of the embodiment of the present invention discloses a kind of power battery external characteristics test method, is suitable for the present invention and implements
The power battery external characteristics test macro disclosed in example first aspect, which comprises
It reads the value of feedback of power battery in real time using host computer, and the value of feedback is converted to the need of charging/discharging apparatus
The requirements are sent to the charging/discharging apparatus by evaluation, and the value of feedback includes that the maximum allowable of the power battery is filled
Discharge current and power；
Based on the requirements, charge and discharge are carried out to the power battery using the charging/discharging apparatus；
The charging and discharging currents, voltage and power of the charging/discharging apparatus are acquired using power analyzer, until described in obtaining
The external characteristic curve of power battery.
Optionally, after the value of feedback for reading power battery in real time using host computer, further includes:
Store the power battery that the host computer is read in real time includes maximum allowable charging and discharging currents and power
Value of feedback
Based on a kind of power battery external characteristics test method and system that the embodiments of the present invention provide, the system packet
Include: host computer one end is connect with power battery, one end connection of the other end and charging/discharging apparatus, for reading power battery in real time
Value of feedback, and value of feedback is converted to the requirements of the charging/discharging apparatus, requirements is sent to charging/discharging apparatus.Charge and discharge
The other end of electric equipment is connect with three phase mains, charging/discharging apparatus anode respectively with the anode of power battery and power analyzer
The cathode of connection, cathode and power battery connects, and for being based on requirements, carries out charge and discharge to power battery.Power analyzer,
For acquiring the charging and discharging currents, voltage and power of charging/discharging apparatus, until obtaining the external characteristic curve of power battery.The present invention
In the scheme of offer, by the value of feedback acquired in real time, the requirements for adjusting charging/discharging apparatus carry out charge and discharge to power battery
Experiment, obtains the external characteristic curve of power battery, improves the accuracy of charge-discharge test.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural block diagram of power battery external characteristics test macro provided in an embodiment of the present invention；
Fig. 2 is a kind of structural block diagram of power battery external characteristics test macro provided in an embodiment of the present invention；
Fig. 3 is a kind of structural block diagram of power battery external characteristics test macro provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of power battery external characteristics test method provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In this application, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
It can be seen from background technology that at present for the test method of power battery, mainly using charging/discharging apparatus with constant
Charging and discharging currents and power test power battery external characteristic curve.But power battery is in different voltages and state-of-charge
Corresponding maximum charging and discharging currents and power are all different under (State Of Charge, SOC) value.Therefore, with constant charge and discharge
The external characteristic curve that electric current and power go test power battery to obtain is inaccurate.
Therefore, the embodiment of the invention provides a kind of power battery external characteristics test method and system, on which includes:
Position machine, charging/discharging apparatus and power analyzer.Host computer one end is connect with power battery, one end of the other end and charging/discharging apparatus
Connection.The other end of charging/discharging apparatus is connect with three phase mains, charging/discharging apparatus anode respectively with power battery anode and
The cathode of power analyzer connection, cathode and power battery connects.Acquire the value of feedback of power battery in real time by host computer, it will
Value of feedback transforms into the requirements of charging/discharging apparatus, and requirements are sent to charging/discharging apparatus.Based on requirements, charge and discharge is used
Electric equipment carries out charge and discharge to power battery.Utilize charging and discharging currents, voltage and the function of power analyzer acquisition charging/discharging apparatus
Rate improves the accuracy of charge-discharge test until obtaining the external characteristic curve of power battery.
With reference to Fig. 1, a kind of structural block diagram of power battery external characteristics test macro provided in an embodiment of the present invention is shown,
The system comprises: host computer 101, charging/discharging apparatus 102, power analyzer 103, three phase mains 104 and power battery 105.
Described 101 one end of host computer is connect with power battery 105, and one end of the other end and the charging/discharging apparatus 102 connects
It connects, is converted to the charging/discharging apparatus 102 for reading the value of feedback of the power battery 105 in real time, and by the value of feedback
Requirements, the requirements are sent to the charging/discharging apparatus 102, the value of feedback includes the power battery 105
Maximum allowable charging and discharging currents and power.
During specific implementation, the value of feedback includes the maximum allowable charging and discharging currents of the power battery 105
And power.The requirements are used to indicate the charging/discharging apparatus 102 and carry out charge-discharge test to the power battery 105.Institute
Stating has certain corresponding relationship between requirements and the value of feedback, that is to say, that the requirements are based on by host computer 101
The collected value of feedback determines.
It should be noted that the host computer 101 passes through controller local area network CAN (Controller Area
Network, CAN) bus from the battery management system of the power battery 105 (Battery Management System,
BMS the value of feedback is read in).
The other end of the charging/discharging apparatus 102 is connect with three phase mains 104, the anode point of the charging/discharging apparatus 102
It is not connect with the anode of the power battery 105 and the power analyzer 103, the cathode of the charging/discharging apparatus 102 and institute
The cathode connection for stating power battery 105 carries out charge and discharge to the power battery 105 for being based on the requirements.
During specific implementation, it is real that charge and discharge are carried out to the power battery 105 using the charging/discharging apparatus 102
It tests, the SOC of the power battery 105 is discharged into preset SOC minimum from 100%, then from the preset SOC minimum
It is charged to 100%.
It should be noted that the sequence for 105 charge and discharge of power battery not only includes that first electric discharge recharges, it can also be with
It is the power battery 105 to be first charged to 100% from the preset SOC minimum, then discharge into from 100% preset
SOC minimum.
The power analyzer 103, for acquiring charging and discharging currents, voltage and the power of the charging/discharging apparatus 102, directly
To the external characteristic curve for obtaining the power battery 105.
During specific implementation, the power analyzer 103 measures the charging and discharging currents by current transformer,
The power analyzer 103 directly measures the voltage, and the power is that the electric current multiplies in voltage acquisition.
It should be noted that power battery external characteristics refers to maximum of the power battery in different voltages or SOC
Charge-discharge electric power.
Preferably, the host computer 101 by CAN bus respectively with the power battery 105, the charging/discharging apparatus
102 connections.
Preferably, the charging/discharging apparatus 102 is divided with the power battery 105, power respectively by charge and discharge high-voltage line
Analyzer 103 and three phase mains 104 connect.
In embodiments of the present invention, the value of feedback for acquiring power battery in real time by host computer converts the value of feedback
As the requirements of charging/discharging apparatus, the requirements are sent to the charging/discharging apparatus.Based on the requirements, institute is used
It states charging/discharging apparatus and charge and discharge is carried out to the power battery.The charge and discharge of the charging/discharging apparatus are acquired using power analyzer
Electric current, voltage and power improve the accuracy of charge-discharge test until obtaining the external characteristic curve of the power battery.
With reference to Fig. 2, a kind of structural block diagram of power battery external characteristics test macro provided in an embodiment of the present invention is shown,
The host computer 101 includes: processor 1011 and Two Channels CAN address card 1012.
Processor 1011, the value of feedback sent for receiving the Two Channels CAN address card 1012, by the feedback
Value is converted to the requirements, and the requirements are sent to the Two Channels CAN address card 1012.
Two Channels CAN address card 1012, one end are connect with power battery 105, and the other end is connect with the charging/discharging apparatus
102, for reading the value of feedback of the power battery 105 in real time, the value of feedback is sent to the processor 1011,
The requirements that the processor 1011 is sent are received, and the requirements are sent to the charging/discharging apparatus 102.
In embodiments of the present invention, the value of feedback for acquiring power battery in real time by host computer converts the value of feedback
As the requirements of charging/discharging apparatus, the requirements are sent to the charging/discharging apparatus.Based on the requirements, institute is used
It states charging/discharging apparatus and charge and discharge is carried out to the power battery.The charge and discharge of the charging/discharging apparatus are acquired using power analyzer
Electric current, voltage and power improve the accuracy of charge-discharge test until obtaining the external characteristic curve of the power battery.
With reference to Fig. 3, a kind of structural block diagram of power battery external characteristics test macro provided in an embodiment of the present invention is shown,
The system also includes:
Memory 106 is connect with the host computer 101, the power read in real time for storing the host computer 101
The value of feedback comprising maximum allowable charging and discharging currents and power of battery 105.
In embodiments of the present invention, the value of feedback for acquiring power battery in real time by host computer converts the value of feedback
As the requirements of charging/discharging apparatus, the requirements are sent to the charging/discharging apparatus.Based on the requirements, institute is used
It states charging/discharging apparatus and charge and discharge is carried out to the power battery.The charge and discharge of the charging/discharging apparatus are acquired using power analyzer
Electric current, voltage and power improve the accuracy of charge-discharge test until obtaining the external characteristic curve of the power battery.
It is corresponding with a kind of power battery external characteristics test macro that embodiments of the present invention Fig. 1 is provided, with reference to Fig. 4,
The embodiment of the invention also provides a kind of flow charts of power battery external characteristics test method, the described method comprises the following steps:
Step S401: it reads the value of feedback of power battery in real time using host computer, and the value of feedback is converted to charge and discharge
The requirements are sent to the charging/discharging apparatus by the requirements of electric equipment.
During implementing step S401, the value of feedback includes the maximum allowable charge and discharge of the power battery
Electric current and power.The requirements are used to indicate the charging/discharging apparatus and carry out charge-discharge test to the power battery.
It should be noted that the host computer reads the feedback by network CAN bus from the BMS of the power battery
Value.
Preferably, it after the value of feedback for reading power battery in real time using host computer, stores the host computer and reads in real time
The power battery the value of feedback comprising maximum allowable charging and discharging currents and power.
Step S402: being based on the requirements, carries out charge and discharge to the power battery using the charging/discharging apparatus.
During implementing step S402, charge and discharge are carried out to the power battery using the charging/discharging apparatus
The SOC of the power battery is discharged into preset SOC minimum from 100% by experiment, then from the preset SOC minimum
It is charged to 100%.
It should be noted that the sequence for the power battery charge and discharge not only includes that first electric discharge recharges, it is also possible to
The power battery is first charged to 100% from the preset SOC minimum, then from 100% to discharge into preset SOC minimum
Value.
Step S403: acquiring the charging and discharging currents, voltage and power of the charging/discharging apparatus using power analyzer, until
Obtain the external characteristic curve of the power battery.
During implementing step S403, the power analyzer measures the charge and discharge by current transformer
Electric current, the power analyzer directly measure the voltage, and the power is that the electric current multiplies in voltage acquisition.
It should be noted that power battery external characteristics refers to maximum of the power battery in different voltages or SOC
Charge-discharge electric power.
In conclusion the present invention provides a kind of power battery external characteristics test method and system, which includes: upper
Machine one end is connect with power battery, one end connection of the other end and charging/discharging apparatus, for reading the feedback of power battery in real time
It is worth, and value of feedback is converted to the requirements of the charging/discharging apparatus, requirements is sent to charging/discharging apparatus.Charging/discharging apparatus
The other end connect with three phase mains, charging/discharging apparatus anode respectively with power battery anode and power analyzer connect,
The connection of the cathode of cathode and power battery carries out charge and discharge to power battery for being based on requirements.Power analyzer is used for
Charging and discharging currents, voltage and the power of charging/discharging apparatus are acquired, until obtaining the external characteristic curve of power battery.The present invention provides
Scheme in, by the value of feedback acquired in real time, the requirements for adjusting charging/discharging apparatus carry out charge-discharge test to power battery,
The external characteristic curve for obtaining power battery, improves the accuracy of charge-discharge test.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.System and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of power battery external characteristics test macro, which is characterized in that the system comprises: host computer, charging/discharging apparatus and
Power analyzer；
Described host computer one end is connect with power battery, and the other end is connect with one end of the charging/discharging apparatus, for reading in real time
The value of feedback of the power battery is taken, and the value of feedback is converted to the requirements of the charging/discharging apparatus, by the demand
Value is sent to the charging/discharging apparatus, and the value of feedback includes the maximum allowable charging and discharging currents and power of the power battery；
The other end of the charging/discharging apparatus is connect with three phase mains, the charging/discharging apparatus anode respectively with the power electric
The anode in pond is connected with the power analyzer, and the cathode of the charging/discharging apparatus is connect with the cathode of the power battery, is used
In being based on the requirements, charge and discharge are carried out to the power battery；
The power analyzer, for acquiring the charging and discharging currents, voltage and power of the charging/discharging apparatus, until described in obtaining
The external characteristic curve of power battery.
2. system according to claim 1, which is characterized in that the host computer passes through controller local area network's CAN bus
It is connect respectively with the power battery, the charging/discharging apparatus.
3. system according to claim 1, which is characterized in that the charging/discharging apparatus by charge and discharge high-voltage line respectively with
The power battery, power analyzer are connected with three phase mains.
4. system according to claim 1, which is characterized in that the host computer includes: processor and Two Channels CAN communication
Card；
The value of feedback is converted to described by processor, the value of feedback sent for receiving the Two Channels CAN address card
The requirements are sent to the Two Channels CAN address card by requirements；
Two Channels CAN address card, one end are connect with power battery, and the other end is connect with the charging/discharging apparatus, for reading in real time
The value of feedback is sent to the processor by the value of feedback for taking the power battery, receives what the processor was sent
The requirements, and the requirements are sent to the charging/discharging apparatus.
5. system according to claim 1, which is characterized in that the system also includes:
Memory is connect with the host computer, for store the power battery that the host computer is read in real time comprising most
The big value of feedback for allowing charging and discharging currents and power.
6. a kind of power battery external characteristics test method, which is characterized in that be suitable for of any of claims 1-5 dynamic
Power battery external characteristics test macro, which comprises
It reads the value of feedback of power battery in real time using host computer, and the value of feedback is converted to the demand of charging/discharging apparatus
The requirements are sent to the charging/discharging apparatus by value, and the value of feedback includes the maximum allowable charge and discharge of the power battery
Electric current and power；
Based on the requirements, charge and discharge are carried out to the power battery using the charging/discharging apparatus；
The charging and discharging currents, voltage and power of the charging/discharging apparatus are acquired using power analyzer, until obtaining the power
The external characteristic curve of battery.
7. according to the method described in claim 6, it is characterized in that, the feedback for reading power battery in real time using host computer
After value, further includes:
Store the feedback comprising maximum allowable charging and discharging currents and power for the power battery that the host computer is read in real time
Value.
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| CN201811509758.2A CN109507603B (en) | 2018-12-11 | 2018-12-11 | Power battery external characteristic testing method and system |
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|---|---|---|---|
| CN201811509758.2A CN109507603B (en) | 2018-12-11 | 2018-12-11 | Power battery external characteristic testing method and system |
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| CN109507603B CN109507603B (en) | 2021-08-20 |
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| CN109507603B (en) | 2021-08-20 |
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