CN110221234A - Examine the device and method of battery core monitoring unit sampling functions - Google Patents
Examine the device and method of battery core monitoring unit sampling functions Download PDFInfo
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- CN110221234A CN110221234A CN201910472903.2A CN201910472903A CN110221234A CN 110221234 A CN110221234 A CN 110221234A CN 201910472903 A CN201910472903 A CN 201910472903A CN 110221234 A CN110221234 A CN 110221234A
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- battery core
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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Abstract
The present invention relates to battery technology fields, provide a kind of device for examining battery core monitoring unit sampling functions, described device includes: battery core simulator, and the battery core simulator includes concatenated N number of resistance between voltage source and voltage source positive and negative anodes；Master control battery core monitoring unit, the master control battery core monitoring unit are connected with the battery core simulator, for acquiring each ohmically voltage value；Whether the voltage value is used for compared with battery core monitoring unit to be measured same ohmically voltage value collected, to examine the sampling functions of the battery core monitoring unit to be measured normal.Meanwhile additionally providing a kind of method for examining battery core monitoring unit sampling functions.Embodiments of the present invention have been greatly saved testing cost, improve Security of test, while improving the testing accuracy of battery core monitoring unit to be measured.
Description
Technical field
The present invention relates to battery technology field, in particular to a kind of device for examining battery core monitoring unit sampling functions, with
A kind of and method for examining battery core monitoring unit sampling functions.
Background technique
Batteries of electric automobile packet is made of multiple mould groups, with for exporting high pressure, each mould group is by multiple battery cores
Composition, the voltage and temperature of each battery core require to monitor in real time, to guarantee the safety of battery pack.Therefore it needs according to battery
The battery core monitoring unit (CSC) of the number configuration corresponding number of packet battery core will refer to single battery core since the SOC of single battery core is calculated
Voltage sample, CSC battery core sampling precision are the important parameters of battery pack.If CSC battery core sampling error is excessive, electricity may cause
Chi Bao is overcharged in the generation of charge and discharge end or over-discharge is abnormal, influences the service life of battery pack, or even influence the safety of battery pack
Performance might have fire accident when serious.Therefore CSC needs to detect before the use its battery core sampling precision one by one,
It also needs to verify CSC temperature acquisition precision simultaneously, avoids temperature sampling from reporting by mistake and cause vehicle thermal management policy abnormal.
Prior art is that producer buys standardized battery core simulator or directly using true mould group to CSC mostly
To detect acquisition battery core voltage accuracy.But battery core simulator higher cost is used, it is unfavorable for enterprise's high-volume and purchases, and use
Though true mould group replaces the battery core simulator can to reduce cost, when short circuit occurs for CSC sampling circuit, mould group has short-circuit burning
The risk ruined, security risk are very big.Therefore both of which is not most reasonable battery core sampling analog machine.
Summary of the invention
In view of this, the present invention is directed to propose it is a kind of examine battery core monitoring unit sampling functions device and method so that
When solving the problems, such as inspection sampling functions less cost is excessively high and security risk.
To achieve the goals above, first aspect present invention provides a kind of dress for examining battery core monitoring unit sampling functions
It sets, described device includes:
Battery core simulator；The battery core simulator includes concatenated N number of resistance between voltage source and voltage source positive and negative anodes；
Master control battery core monitoring unit, the master control battery core monitoring unit are connected with the battery core simulator, every for acquiring
A ohmically voltage value；
The voltage value is used for compared with battery core monitoring unit to be measured same ohmically voltage value collected, with inspection
Whether the sampling functions for testing the battery core monitoring unit to be measured are normal.
Optionally, the resistance is adjustable resistance.
Optionally, described device further includes host computer, and the host computer is connected with the master control battery core monitoring unit, and
In test, also it is connected with the battery core monitoring unit to be measured；
The host computer is configured as obtaining the master control battery core monitoring unit each ohmically voltage value collected,
It is compared with battery core monitoring unit to be measured same ohmically voltage value collected, to examine the battery core monitoring to be measured
Whether the sampling functions of unit are normal.
Optionally, described device further includes temperature sensor, and the temperature sensor is for acquiring the battery core prison to be measured
Control the real time temperature of unit.
Second aspect of the present invention also provides a kind of method for examining battery core monitoring unit sampling functions, which comprises
Battery core monitoring unit to be measured and master control battery core monitoring unit are connected with battery core simulator；The battery core simulator
Including N number of resistance concatenated between voltage source and voltage source positive and negative anodes；
Each ohmically voltage value is obtained by master control battery core monitoring unit and battery core monitoring unit to be measured respectively；
Whether just more same ohmically two voltage values examine the sampling functions of the battery core monitoring unit to be measured
Often.
Optionally, passing through master control battery core monitoring unit and each ohmically electricity of battery core monitoring unit to be measured acquisition respectively
Before the step of pressure value, further includes:
The output voltage of voltage source in the battery core simulator is adjusted, and/or adjusts the resistance value of the resistance.
Optionally, more same ohmically two voltage values examine the sampling functions of the battery core monitoring unit to be measured
It is whether normal, comprising:
Whether the difference for calculating two voltage values judges the difference within given threshold；
If sampling functions are normal within given threshold, otherwise sampling functions are abnormal.
Optionally, the method also includes: during the test, acquire the real-time temperature of the battery core monitoring unit to be measured
Degree generates temperature test and unsuccessfully alerts when real time temperature is more than temperature threshold.
Optionally, the step of the method also includes test equalization functions:
Several equalization channels are opened, the voltage of the resistance in each equalization channel is obtained by battery core monitoring unit to be measured
Value；
Judge whether the voltage value is less than setting equilibrium value；
When being less than the setting equilibrium value, equalization function is normal；Otherwise, balanced fault alarm is generated.
Third aspect present invention also provides a kind of battery core simulator, the battery core simulator include voltage source and voltage source just
Concatenated N number of resistance between cathode, for simulating N number of concatenated battery core.
The above-mentioned technical proposal provided through the invention can save and buy traditional battery core simulator device or substitution very
Real mould group has been greatly saved testing cost, improves Security of test, while utilizing the battery core monitoring unit calibrated in advance
(CSC) voltage sample compares, and improves the testing accuracy of battery core monitoring unit to be measured.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies mode and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the apparatus structure signal for the inspection battery core monitoring unit sampling functions that one embodiment of the present invention provides
Figure；
Fig. 2 is the method flow signal for the inspection battery core monitoring unit sampling functions that one embodiment of the present invention provides
Figure；
Fig. 3 is the adjusting schematic diagram for the battery core simulator that one embodiment of the present invention provides；
Fig. 4 is the specific flow chart for the inspection battery core monitoring unit sampling functions that one embodiment of the present invention provides.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can
To be combined with each other.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is the apparatus structure signal for the inspection battery core monitoring unit sampling functions that one embodiment of the present invention provides
Figure.As shown in Figure 1, a kind of device for examining battery core monitoring unit sampling functions, described device include:
Battery core simulator；The battery core simulator includes concatenated N number of resistance between voltage source and voltage source positive and negative anodes；
Master control battery core monitoring unit, the master control battery core monitoring unit are connected with the battery core simulator, every for acquiring
A ohmically voltage value；
The voltage value is used for compared with battery core monitoring unit to be measured same ohmically voltage value collected, with inspection
Whether the sampling functions for testing the battery core monitoring unit to be measured are normal.
In this way, the battery core simulator structure provided through the invention is simple, a variety of battery core outputs can be simulated, are significantly reduced
The cost of battery core simulator, while reducing battery core simulator short circuit and burn risk.Use calibrated battery core monitoring unit
As the reference standard of battery core voltage sample, plurality of voltages sample devices is not only eliminated, it is single also to improve battery core monitoring to be measured
The measuring accuracy of member.
Specifically, being to obtain higher output voltage, embodiment party of the invention by the series connection of battery core in same mould group
Formula simulates battery core using resistance, i.e. first resistor simulates this corresponding analog form of the first battery core.In this embodiment party
There is voltage on each resistance in formula, when measuring n (n≤N) a ohmically voltage, the voltage measured is equal at n
The sum of ohmically voltage, and when series connection battery core, the sum of the voltage of corresponding n battery core is equivalent.With divider resistance
Mode simulates concatenated battery core, not only simplifies circuit structure, also reduces cost and risk.Examining battery core monitoring to be measured
When the sampling functions of unit, need to compare its sampled value with standard value, or even also need further data processing, to judge
Whether its sampling functions is normal.Only when sampled value is within the error range of setting, could judge its be it is normal, therefore
Determine that standard value is the important step of interpretation sampling precision.Embodiments of the present invention are monitored single using the battery core of calibrated completion
The acquisition equipment of first (CSC) as standard value.It, herein will be as mark in order to be distinguished with the title of battery core monitoring unit to be measured
The battery core monitoring unit of quasi- reference is known as master control battery core monitoring unit.The equipment has ready-made sampling wiring harness interface, Neng Gouyi
Secondary property samples multiple voltage values, and the connection type of harness can be correspondingly arranged with battery core monitoring unit to be measured, to simplify
Circuit structure eliminates plurality of voltages sample devices.And the voltage acquisition precision of battery core monitoring unit is higher, the voltage of acquisition
Precision can achieve 2mv, and the accurately voltage reference value provided is conducive to be promoted the sampling functions of battery core monitoring unit to be measured
The accuracy of judgement.
Further, the resistance is adjustable resistance.In order to better use resistance simulation battery core, adjustable electric is selected herein
Resistance.As previously mentioned, the number of resistance is also optional.The determination of number herein can be the battery core number simulated as needed
Mesh can also neatly can adjust each resistance both ends ground voltage, to make according to the number and resistance value by adjusting resistance
Each resistance simulation at different power voltage battery core.In common occasion, the battery core specification in same mould group be it is identical,
Therefore, it is necessary to adjust the resistance value of resistance, keep the voltage at each resistance both ends equal, to reach better battery core simulation effect.
In a kind of optional embodiment of the invention, described device further includes host computer, the host computer and the master
It controls battery core monitoring unit to be connected, and in test, is also connected with the battery core monitoring unit to be measured；The host computer is configured
To obtain master control battery core monitoring unit each ohmically voltage value collected, by itself and battery core monitoring unit institute to be measured
Whether the same ohmically voltage value of acquisition compares, to examine the sampling functions of the battery core monitoring unit to be measured normal.
The connection type of host computer and master control battery core monitoring unit and battery core monitoring unit to be measured is commonly used for network interface herein
Or CAN mouthfuls, preferably ZLGCAN.Host computer and according to the voltage value, judges same ohmically electricity by the program of setting
Whether pressure value is normal, and exports judging result.The host computer can also be stored and be saved in measurement process according to actual disposition
Test record.
In a kind of optional embodiment of the invention, described device further includes temperature sensor, the temperature sensor
For acquiring the real time temperature of the battery core monitoring unit to be measured.The NTC resistance of 100k can be selected in temperature sensor herein,
PT resistance can be used, be connected to the temperature acquisition interface of battery core monitoring unit to be measured.Conventional lithium battery operating temperature: -20 DEG C
~60 DEG C, temperature is excessively high to generate security risk, can there is a situation where on fire when serious.
In one embodiment of the invention, a kind of method for examining battery core monitoring unit sampling functions is additionally provided.
Fig. 2 is the method flow schematic diagram for the inspection battery core monitoring unit sampling functions that one embodiment of the present invention provides；The side
Method includes:
Battery core monitoring unit to be measured and master control battery core monitoring unit are connected with battery core simulator；The battery core simulator
Including N number of resistance concatenated between voltage source and voltage source positive and negative anodes；
Each ohmically voltage value is obtained by master control battery core monitoring unit and battery core monitoring unit to be measured respectively；
According to same ohmically two voltage values, whether just the sampling functions of the battery core monitoring unit to be measured are examined
Often.
In a kind of optional embodiment provided by the invention, passing through master control battery core monitoring unit and battery core to be measured respectively
Monitoring unit obtained before the step of each ohmically voltage value, further includes: adjusts voltage source in the battery core simulator
Output voltage, and/or adjust the resistance value of the resistance.It, can by adjusting the output voltage of voltage source in the battery core simulator
With each ohmically voltage value of integrated regulation, which can make battery core simulator reach user in global voltage to set
It is fixed, while can also avoid burning sampled I C；By adjusting the resistance value of single resistance, single ohmically voltage can be changed.
The adjustment mode can make battery core simulator consistent with the battery core that it is simulated in single ohmically voltage.It is needing to make each electricity
In the consistent scene of voltage value in resistance, by adjusting the resistance value of each resistance, the coherence request of voltage value can be reached.
Fig. 3 is the adjusting schematic diagram for the battery core simulator that one embodiment of the present invention provides；It is as shown in Figure 3: simple electricity
The regulation flow process of core simulator is following (taking N=12, herein with 12 string CSC sampling of test):
DC power supply output voltage U0 is first adjusted, then loop current I=U0/ (R1+R2+ ... R11+R12).Setting U0 is small herein
In 75V, to avoid sampled I C is burnt；The sampled voltage of every string is adjusted by adjusting the resistance sizes of R1 to R12 again.Sample line
Interface 1 and sampling line interface 2 regulate the resistance value of R1 to R12 before accessing CSC, so that the voltage on R1 to R12 is equal,
To guarantee sample voltage value consistency.
In a kind of optional embodiment of the invention, more same ohmically two voltage values are examined described to be measured
Whether the sampling functions of battery core monitoring unit are normal, comprising: the difference for calculating two voltage values judges whether the difference is setting
Determine within threshold value；If sampling functions are normal within given threshold, otherwise abnormal.It has selected and has simply sought herein
The method of deviation is to determine whether normal, the differentiation after can also using the progress data processing of other statisticals such as standard deviation.
The difference mode selected herein has the advantages that simple and reliable, can be realized using simple hardware logic electric circuit, can also be with
It is realized by computer program.
In a kind of optional embodiment of the invention, the method also includes: during the test, acquire described to be measured
The real time temperature of battery core monitoring unit generates temperature test and unsuccessfully alerts when real time temperature is more than temperature threshold.Temperature herein
Temperature acquisition can be carried out using common PT100 resistance by spending acquisition module, can also pass through NTC thermistor.Temperature herein
Acquisition module can not also contact setting with battery, such as by the way of infrared measurement of temperature, and which, which is conducive to be promoted, examines speed
Degree.
In a kind of optional embodiment of the invention, the method also includes testing equalization function: if opening
Dry equalization channel, the voltage value of the resistance in each equalization channel is obtained by battery core monitoring unit to be measured；Judge the voltage
Whether value is less than setting equilibrium value；When being less than, equalization function is normal；Otherwise, balanced fault alarm is generated.Balanced meaning is just
It is to be maintained at lithium-ion battery monomer voltage deviation in expected range, to guarantee each monomer electricity using electronic technology
Pond is not damaged in normal use.If without Balance route, with the increase of charge and discharge cycles, each single battery electricity
Pressure is gradually broken up, and service life will reduce significantly.It can be tested herein using the equalization function for being separately turned on odd number road and even number road
It demonstrate,proves CSC to be measured and measures the ohmically voltage value of reference numeral and whether be less than given threshold.
In a kind of optional embodiment of the invention, a kind of data processing equipment is also provided, described device includes: storage
Device and processor；
The memory, for storing program instruction；
The processor, for calling the described program stored in the memory instruction to examine electricity as the aforementioned to realize
The method of core monitoring unit sampling functions.
Described device is usually programming device, has the function of program execution, can be according to the voltage value got, before execution
The method for the inspection battery core monitoring unit sampling functions stated exports inspection result.Device herein has numerical value calculating and logic
The function of operation, at least have the central processor CPU of data-handling capacity, random access memory ram, read only memory ROM,
A variety of I/O mouthfuls and interruption system etc..Device can be, for example, the usual hardwares such as single-chip microcontroller, chip or processor herein, more often use
In the case where, it is exactly intelligent terminal or the processor of PC.The device can also store according to actual disposition and preservation measured
Inspection and test record in journey.
In one embodiment of the invention, a kind of battery core simulator is also provided, the battery core simulator includes voltage
Concatenated N number of resistance between source and voltage source positive and negative anodes.Embodiment above-mentioned of the invention is carried out using this battery core simulator
The inspection and calibration of the sampling functions of battery core monitoring unit to be measured, but this battery core simulator, which also can be suitably used for other, to need to simulate
The scene of battery core, and have the advantages that structure is simple, cost is relatively low and safe and reliable.It is significant although the structure is simple
The usage scenario of the circuit has been expanded, and has not been readily conceivable that, therefore has proposed this purposes claim.
Another embodiment of the invention also provides a kind of computer readable storage medium, stores in the storage medium
There is instruction, when run on a computer, so that computer executes the side above-mentioned for examining battery core monitoring unit sampling functions
Method.
To make structure feature of the invention and attainable effect have further insight and understanding, to preferably real
Apply example and attached drawing cooperation detailed description.Fig. 4 is the inspection battery core monitoring unit sampling function that one embodiment of the present invention provides
The specific flow chart of energy illustrates that steps are as follows in conjunction with Fig. 4:
1) test device is built according to the method connection in attached drawing 1；
2) battery core simulator is regulated according to the step in attached drawing 3；
3) Master CSC (master control battery core monitoring unit) and CSC to be measured (battery core monitoring unit to be measured) are powered on, usually
For 12V power supply；
4) Master CSC reads R1 to the voltage value at the both ends R12, is denoted as Y1 respectively to Y12；
5) CSC to be measured reads R1 to the voltage value at the both ends R12, is denoted as X1 respectively to X12；
6) whether the difference ABS (Yn-Xn) for calculating same ohmically two voltage values judges the difference in setting threshold
It is worth within (2mv)；When all 12 groups of voltage values are in given threshold, then equalization function test is carried out, otherwise sampling functions
It is abnormal, it can resurvey at this time primary；
7) equalization function is tested: being separately turned on the equalization function on odd number road and even number road, is verified CSC to be measured and measure corresponding volume
Number ohmically voltage value whether be less than 3V, if being less than, carry out temperature test；Otherwise equalization function fails, and sends alarm,
Test terminates；
8) temperature test: the real time temperature of the acquisition battery core monitoring unit to be measured, when real time temperature is less than temperature threshold
When (setting 25 DEG C herein), test is completed；Otherwise it generates temperature test unsuccessfully to alert, test terminates.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
There is also other identical elements in process, method, commodity or equipment.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (10)
1. a kind of device for examining battery core monitoring unit sampling functions, which is characterized in that described device includes:
Battery core simulator；The battery core simulator includes concatenated N number of resistance between voltage source and voltage source positive and negative anodes；
Master control battery core monitoring unit, the master control battery core monitoring unit is connected with the battery core simulator, for acquiring each electricity
Voltage value in resistance；
The voltage value is used for compared with battery core monitoring unit to be measured same ohmically voltage value collected, with inspection institute
Whether the sampling functions for stating battery core monitoring unit to be measured are normal.
2. the apparatus according to claim 1, which is characterized in that the resistance is adjustable resistance.
3. the apparatus of claim 2, which is characterized in that described device further includes host computer, the host computer and institute
It states master control battery core monitoring unit to be connected, and in test, is also connected with the battery core monitoring unit to be measured；
The host computer is configured as obtaining the master control battery core monitoring unit each ohmically voltage value collected, by it
Compared with battery core monitoring unit to be measured same ohmically voltage value collected, to examine the battery core monitoring unit to be measured
Sampling functions it is whether normal.
4. the apparatus according to claim 1, which is characterized in that described device further includes temperature sensor, and the temperature passes
Sensor is used to acquire the real time temperature of the battery core monitoring unit to be measured.
5. a kind of method for examining battery core monitoring unit sampling functions, which is characterized in that the described method includes:
Battery core monitoring unit to be measured and master control battery core monitoring unit are connected with battery core simulator；The battery core simulator includes
Concatenated N number of resistance between voltage source and voltage source positive and negative anodes；
Each ohmically voltage value is obtained by master control battery core monitoring unit and battery core monitoring unit to be measured respectively；
Whether more same ohmically two voltage values examine the sampling functions of the battery core monitoring unit to be measured normal.
6. according to the method described in claim 5, it is characterized in that, passing through master control battery core monitoring unit and battery core to be measured respectively
Monitoring unit obtained before the step of each ohmically voltage value, further includes:
The output voltage of voltage source in the battery core simulator is adjusted, and/or adjusts the resistance value of the resistance.
7. according to the method described in claim 6, it is characterized in that, more same ohmically two voltage values, described in inspection
Whether the sampling functions of battery core monitoring unit to be measured are normal, comprising:
Whether the difference for calculating two voltage values judges the difference within given threshold；
If sampling functions are normal within given threshold, otherwise sampling functions are abnormal.
8. according to the method described in claim 5, it is characterized in that, the method also includes:
During the test, the real time temperature for acquiring the battery core monitoring unit to be measured, when real time temperature is more than temperature threshold,
Temperature test is generated unsuccessfully to alert.
9. according to the method described in claim 5, it is characterized in that, the step of the method also includes test equalization functions:
Several equalization channels are opened, the voltage value of the resistance in each equalization channel is obtained by battery core monitoring unit to be measured；
Judge whether the voltage value is less than setting equilibrium value；
When being less than setting equilibrium value, equalization function is normal；Otherwise, balanced fault alarm is generated.
10. a kind of battery core simulator, which is characterized in that the battery core simulator includes going here and there between voltage source and voltage source positive and negative anodes
N number of resistance of connection, for simulating N number of concatenated battery core.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024077614A1 (en) * | 2022-10-14 | 2024-04-18 | 宁德时代新能源科技股份有限公司 | Method for testing sampling chip, test apparatus, control device, and storage medium |
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2019
- 2019-05-31 CN CN201910472903.2A patent/CN110221234A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024077614A1 (en) * | 2022-10-14 | 2024-04-18 | 宁德时代新能源科技股份有限公司 | Method for testing sampling chip, test apparatus, control device, and storage medium |
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