CN107167690A - A kind of voltage acquisition system for battery pack broken thread detector and method - Google Patents
A kind of voltage acquisition system for battery pack broken thread detector and method Download PDFInfo
- Publication number
- CN107167690A CN107167690A CN201710337837.9A CN201710337837A CN107167690A CN 107167690 A CN107167690 A CN 107167690A CN 201710337837 A CN201710337837 A CN 201710337837A CN 107167690 A CN107167690 A CN 107167690A
- Authority
- CN
- China
- Prior art keywords
- voltage
- battery
- battery cell
- pull
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Abstract
The present invention proposes a kind of voltage acquisition system for battery pack broken thread detector, including filtering voltage regulation module, pull-up current source module, pull-down current source module, voltage acquisition module and current acquisition module, it had both considered the static characteristic of battery it is contemplated that the actual dynamic operation condition of battery, the not direct sampling battery monomer voltage of one side, but it regard the upper actuation voltage of sampling battery monomer as basis for estimation, the mode being combined by using cell voltage and system power detect battery sampling line break, simplify circuit design, the degree of accuracy of line break detection is improved to ensure that the security of system.The present invention proposes a kind of voltage acquisition system for battery pack wire break detection method.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of voltage acquisition system for battery pack broken thread detector and side
Method.
Background technology
With the development of electronic information technology, the portable terminal such as mobile phone, notebook largely occurs, electric car
Gradually popularize.People are monitored with greater need for battery electric quantity, the battery status of electric car to terminal, so as to rational management electricity
Source energy.
Battery is more and more extensive in numerous applications such as electric automobile market, energy storage markets, and battery is just as whole system
Heart, to whole system provide power.Accordingly, it would be desirable to battery information is monitored in real time, and the collection of cell voltage
It is the major parameter in monitoring system.Once battery voltage sampling line breaks, system loses the monitoring to battery, the battery of mistake
Information can cause over-charging of battery, mistake to be put, uniformity reduction, and serious can even explode, and jeopardize personal safety.
For the burn out detection of battery voltage sampling line, some patents are had at present and propose solution.For example
A kind of protection device and protection system of battery connection broken string are proposed in CN103825252A, the patent is preset battery broken string and protected
Voltage is protected, the cell voltage collected thinks broken string when reaching predeterminated voltage；And for example one is proposed in patent CN104391212A
Multichannel battery voltage acquisition system break detection circuit is planted, if battery sampling line breaks, cell voltage is believed by controlling switch
Ground connection number is pulled down to, the cell voltage that microcomputer reads are arrived is 0, then is judged as broken string；And for example patent CN106371031A
In propose a kind of battery pack wire break detection method and device, by acquisition module gather battery cell voltage, by judging mould
Block judges whether monomer voltage is 0, and cell voltage is 0 and is judged as broken string.
As can be seen that judging whether to break mainly in the prior art by cell voltage from presently disclosed patent
Method has two kinds：One kind is to set voltage threshold, directly the voltage of collection battery cell or the adopting battery by hardware circuit
Sample end gathers the voltage of battery cell after being handled, be judged as broken string if voltage reaches threshold value.One kind is that sampling needs to judge
Battery cell and its front and rear batteries monomer voltage, battery voltage sampling is judged by voltage change relation each other
Whether line breaks.The above method to battery voltage acquisition line wire break detection method using the battery cell voltage that directly collects as
Basis for estimation, this solution judges relatively more accurate under " static state " operating mode, not in view of battery under " dynamic " operating mode
, often there is situation about judging by accident, causes mistake in actual applications in the influence to voltage such as electric capacity in voltage pulsation and circuit
Alarm and protection, influence the safe and stable operation of system.
The content of the invention
The technical problem to be solved in the present invention is：A kind of voltage acquisition system for battery pack broken thread detector and side are provided
Method, it had both considered the static characteristic of battery it is contemplated that the actual dynamic operation condition of battery, improves the standard of burn out detection judgement
True property.
What the solution of the present invention was realized in：A kind of voltage acquisition system for battery pack broken thread detector, including：
Filtering voltage regulation module, is connected with battery cell, the voltage ripple for filtering out battery cell caused by external interference,
The output voltage of stable cell monomer；
Pull-up current source module, is connected with battery cell, for providing supply during battery cell voltage acquisition
Electric current is to pin is measured, so as to collect the upper pull-up voltage of battery cell；
Pull-down current source module, is connected with battery cell, for providing absorption during battery cell voltage acquisition
Electric current is to pin is measured, so as to collect the actuation voltage of battery cell；
Voltage acquisition module, for gathering the magnitude of voltage of each batteries monomer, and is supplied to burn out detection module to carry out
Processing；
Current acquisition module, the electric current for gathering battery pack for the judgement of battery unusual service condition, and is supplied to broken string
Detection module is handled.
Another technical scheme of the present invention is that on above-mentioned basis the filtering voltage regulation module is by some filtering voltage regulations
Submodule is constituted, and each filtering voltage regulation submodule is connected with battery cell respectively.
Another technical scheme of the present invention is that on above-mentioned basis the filtering voltage regulation submodule is by some different ginsengs
The filter regulator circuit of several electric capacity and resistance composition.
Another technical scheme of the present invention is that on above-mentioned basis the pull-up current source module is by some sub- pull-up
Current source module is constituted, and every sub- pull-up current source module is connected with battery cell respectively, and pull-up current source module is in battery list
100 μ A are provided during bulk voltage collection supplies current to measurement pin, so as to collect the upper pull-up voltage of battery cell.
Another technical scheme of the present invention is that on above-mentioned basis the pull-down current source module is by some drop-down electricity
Stream source submodule composition, each pull-down current source submodule is connected with battery cell respectively, and pull-down current source module is in battery list
Bulk voltage provides 100 μ A absorption electric current to pin is measured during gathering, so as to collect the actuation voltage of battery cell.
Another technical scheme of the present invention is that on above-mentioned basis the voltage acquisition module is included by AD sampling electricity
Road, AD correcting circuits and voltage modulate circuit.
Another technical scheme of the present invention is that on above-mentioned basis the current acquisition module includes current sense
Device, voltage modulate circuit, AD sample circuits and AD correcting circuits.
Another technical scheme of the present invention is on above-mentioned basis, in addition to burn out detection module, the broken string inspection
Module is surveyed with voltage acquisition module and current acquisition module to be connected.
The present invention another technical scheme be it is above-mentioned basis on, the detection method bag of the burn out detection module
Include：
The total current of sampling battery group；
Open pull-up current source module；
Open pull-down current source module；
The total current of sampling battery group, and judge whether curent change exceedes given threshold again, if more than given threshold
Then think before and after battery cell voltage sample, battery is operated under dynamic operation condition, there occurs voltage pulsation, easily produce erroneous judgement,
Abandon this burn out detection；
If curent change is not less than given threshold, it is believed that battery is under the operating mode of geo-stationary, and battery cell voltage is steady
It is fixed, can be for progress burn out detection；
If the upper actuation voltage difference that N connects battery cell is less than the voltage threshold set, then it is assumed that N-1 batteries
Line break.
Another technical scheme of the present invention is on above-mentioned basis, additionally provides a kind of voltage acquisition system for battery pack
Wire break detection method, comprises the following steps：
S1, the total current of sampling battery group are simultaneously recorded as current_start；
S2, unlatching pull-up current source module, provide 100 μ A supply electric current, and adopt for the thief hatch of battery cell voltage
The upper pull-up voltage of set battery monomer is deposited to cellpu (n)；
S3, unlatching pull-down current source module, provide 100 μ A absorption electric current, and adopt for the thief hatch of battery cell voltage
The actuation voltage of set battery monomer is deposited to cellpd (n)；
S4, the again total current of sampling battery group are simultaneously recorded as current_now, judge whether curent change exceedes setting
Threshold value, before and after battery cell voltage sample is thought if exceeding given threshold, battery is operated under dynamic operation condition, there occurs voltage
Fluctuation, easily produces erroneous judgement, abandons this burn out detection；
If S5, electric current are not less than given threshold, it is believed that battery is under the operating mode of geo-stationary, and battery cell voltage is steady
It is fixed, can be for progress burn out detection；
If the upper actuation voltage difference that S6, N connect battery cell is less than the voltage threshold set, then it is assumed that N-1 economizes on electricity
The line break in pond.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
In the embodiment that the present invention is provided, a kind of battery pack sampling system broken thread detector and method are proposed, it was both
The static characteristic of battery is considered it is contemplated that the actual dynamic operation condition of battery, on the one hand not direct sampling battery monomer is electric
Pressure, but the upper actuation voltage of sampling battery monomer is mutually tied as basis for estimation by using cell voltage with system power
The mode of conjunction come detect battery sampling line break, simplify circuit design, improve line break detection the degree of accuracy so as to
It ensure that the security of system.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.
Fig. 1 is the structured flowchart of voltage acquisition system for battery pack broken thread detector in one embodiment of the present invention；
Fig. 2 is the circuit module figure for inventing voltage acquisition system for battery pack broken thread detector in a kind of embodiment；
Fig. 3 is the flow chart of voltage acquisition system for battery pack wire break detection method in one embodiment of the present invention.
Embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings, and the description of this part is only exemplary and explanatory, should not
There is any restriction effect to protection scope of the present invention.In addition, description of the those skilled in the art according to this document, can be right
Feature in this document in embodiment and not in be the same as Example carries out respective combination.
Term " first ", " second ", " the 3rd " " in description and claims of this specification and above-mentioned accompanying drawing
The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage
The data that solution is so used can be exchanged in the appropriate case, so as to embodiments of the invention described herein, for example can be with
Order in addition to those for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and their times
What is deformed, it is intended that covering is non-exclusive to be included, for example, contain the process of series of steps or unit, method, system,
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for
The intrinsic other steps of these processes, method, product or equipment or unit.The example of the embodiment is shown in the drawings, its
In from beginning to end same or similar label represent same or similar element or the element with same or like function.Below
The embodiment described by reference to accompanying drawing is exemplary, is only used for explaining the present invention, and it is not intended that to the limit of the present invention
System.On the contrary, embodiments of the invention include falling into the range of the spirit of attached claims and intension all changes, repair
Change and equivalent.The description of this part is only exemplary and explanatory, should not there is any limitation to protection scope of the present invention
Effect., can be in embodiment in this document and not be the same as Example in addition, description of the those skilled in the art according to this document
In feature carry out respective combination.In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited,
Term " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary.
For the ordinary skill in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.This
Outside, in the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.In flow chart or herein
Any process described otherwise above or method description are construed as, and expression includes one or more for realizing spy
Module, fragment or the part of the code of the executable instruction for the step of determining logic function or process, and the preferred reality of the present invention
Applying the scope of mode includes other realization, wherein order that is shown or discussing can not be pressed, including according to involved work(
Can by it is basic and meanwhile in the way of or in the opposite order, carry out perform function, this should be by embodiments of the invention art
Technical staff understood.
The embodiment of the present invention is as follows, as shown in figure 1, a kind of voltage acquisition system for battery pack broken thread detector, including：
Filtering voltage regulation module 100, is connected with battery cell, the voltage line for filtering out battery cell caused by external interference
Ripple, the output voltage of stable cell monomer；
Pull-up current source module 200, is connected with battery cell, for providing confession during battery cell voltage acquisition
Induced current is to pin is measured, so as to collect the upper pull-up voltage of battery cell；
Pull-down current source module 300, is connected with battery cell, for providing suction during battery cell voltage acquisition
Electric current is received to pin is measured, so as to collect the actuation voltage of battery cell；
Voltage acquisition module 400, for gathering the magnitude of voltage of each batteries monomer, and is supplied to burn out detection module to enter
Row processing；
Current acquisition module 500, the electric current for gathering battery pack, for the judgement of battery unusual service condition, and is supplied to
Burn out detection module is handled.
On the basis of above-described embodiment, in another embodiment of the present invention, the filtering voltage regulation module 100 is by some filtering
Voltage stabilizing submodule is constituted, and each filtering voltage regulation submodule is connected with battery cell respectively.
On the basis of above-described embodiment, in another embodiment of the present invention, the filtering voltage regulation submodule is by some differences
The filter regulator circuit of electric capacity and the resistance composition of parameter.
On the basis of above-described embodiment, in another embodiment of the present invention, the pull-up current source module 200 is by some sons
Pull-up current source module 200 is constituted, and every sub- pull-up current source module 200 is connected with battery cell respectively, pull-up current source mould
What block 200 provided 100 μ A during battery cell voltage acquisition supplies current to measurement pin, so as to collect battery list
The upper pull-up voltage of body.
On the basis of above-described embodiment, in another embodiment of the present invention, the pull-down current source module 300 is under some
Sourcing current source submodule composition, each pull-down current source submodule is connected with battery cell respectively, and pull-down current source module 300 exists
100 μ A absorption electric current is provided during battery cell voltage acquisition to pin is measured, so as to collect under battery cell
Pull-up voltage.
On the basis of above-described embodiment, in another embodiment of the present invention, the voltage acquisition module 400 includes being adopted by AD
Sample circuit, AD correcting circuits and voltage modulate circuit.
On the basis of above-described embodiment, in another embodiment of the present invention, the current acquisition module 500 is passed including electric current
Sensor, voltage modulate circuit, AD sample circuits and AD correcting circuits.
On the basis of above-described embodiment, in another embodiment of the present invention, in addition to burn out detection module 600, it is described disconnected
Line detection module 600 is connected with voltage acquisition module 400 and current acquisition module 500.
On the basis of above-described embodiment, in another embodiment of the present invention, the processing method of the burn out detection module 600
Including：
The total current of sampling battery group；
Open pull-up current source module 200；
Open pull-down current source module 300；
The total current of sampling battery group, and judge whether curent change exceedes given threshold again, if more than given threshold
Then think before and after battery cell voltage sample, battery is operated under dynamic operation condition, there occurs voltage pulsation, easily produce erroneous judgement,
Abandon this burn out detection；
If curent change is not less than given threshold, it is believed that battery is under the operating mode of geo-stationary, and battery cell voltage is steady
It is fixed, can be for progress burn out detection；
If the upper actuation voltage difference that N connects battery cell is less than the voltage threshold set, then it is assumed that N-1 batteries
Line break.
As shown in Fig. 2 being the broken wire protecting equipment schematic diagram by taking the cell application of six section series connection as an example.Need explanation
, illustrate in Fig. 2 and be only illustrative by taking six section series connection cells as an example, to monomer electricity in battery pack in the present invention
The quantity in pond is simultaneously unrestricted, merely to for the sake of clear by taking six section series connection cells as an example.
Wherein, filtering voltage regulation module 100 is made up of seven sub- filtering voltage regulation modules, respectively with first segment GND C0,
Positive pole C1, second section GND C1, positive pole C2, the 3rd batteries negative pole C2, positive pole C3, the 4th batteries negative pole C3, positive pole
C4, the 5th batteries negative pole C4, positive pole C5, the 6th batteries negative pole C5, positive pole C6 are connected.Each sub- filtering voltage regulation module
It is made up of first resistor, the first electric capacity and the second electric capacity, wherein first resistor is LPF resistance, as shown in Figure 2 electricity
R68-R74 is hindered, the low pass filtered that the first electric capacity and the second electric capacity are involves electric capacity of voltage regulation, the first electric capacity electric capacity as shown in Figure 2
C37-C43, the second electric capacity electric capacity C44-C51 as shown in Figure 2.Pass through filtering voltage regulation module, it is ensured that battery cell voltage exists
Stabilization during collection；
Pull-up current source module 200 is made up of seven sub- pull-up current source modules, respectively with first segment GND C0, just
Pole C1, second section GND C1, positive pole C2, the 3rd batteries negative pole C2, positive pole C3, the 4th batteries negative pole C3, positive pole C4,
5th batteries negative pole C4, positive pole C5, the 6th batteries negative pole C5, positive pole C6 are connected.Pull-up current source module 200 is in battery
The collection terminal of monomer voltage provides 100 μ A supply electric current, so as to collect the upper pull-up voltage of battery cell；
Pull-down current source module 300 is made up of seven sub- pull-down current source modules, respectively with first segment GND C0, just
Pole C1, second section GND C1, positive pole C2, the 3rd batteries negative pole C2, positive pole C3, the 4th batteries negative pole C3, positive pole C4,
5th batteries negative pole C4, positive pole C5, the 6th batteries negative pole C5, positive pole C6 are connected.Pull-down current source module 300 is in battery
The collection terminal of monomer voltage provides 100 μ A absorption electric current, so as to collect the actuation voltage of battery cell；
Voltage acquisition module 400 is made up of seven road voltage acquisition submodules, respectively with first segment GND C0, positive pole
C1, second section GND C1, positive pole C2, the 3rd batteries negative pole C2, positive pole C3, the 4th batteries negative pole C3, positive pole C4,
Five batteries negative pole C4, positive pole C5, the 6th batteries negative pole C5, positive pole C6 are connected.Gathered by voltage acquisition module 400,
The pullup or pulldown magnitude of voltage of all battery cells is obtained, and is supplied to burn out detection module to be handled sampled value；
Current acquisition module 500 gathers the total current of the battery pack of six batteries composition, and sampled value is supplied into broken string
Detection module 600 is handled.
Wherein, the processing method of burn out detection module 600, as shown in figure 3, comprising the following steps：
S1, the total current of sampling battery group are simultaneously recorded as current_start；
S2, unlatching pull-up current source module 200,100 μ A supply electric current is provided for the thief hatch of battery cell voltage, and
The upper pull-up voltage of collection battery cell is deposited to cellpu (n)；
S3, unlatching pull-down current source module 300,100 μ A absorption electric current is provided for the thief hatch of battery cell voltage, and
The actuation voltage of collection battery cell is deposited to cellpd (n)；
S4, the again total current of sampling battery group are simultaneously recorded as current_now, judge whether curent change exceedes setting
Threshold value, before and after battery cell voltage sample is thought if exceeding given threshold, battery is operated under dynamic operation condition, there occurs voltage
Fluctuation, easily produces erroneous judgement, abandons this burn out detection；
If S5, electric current are not less than given threshold, it is believed that battery is under the operating mode of geo-stationary, and battery cell voltage is steady
It is fixed, can be for progress burn out detection；
If the upper actuation voltage difference that S6, N connect battery cell is less than the voltage threshold set, then it is assumed that N-1 economizes on electricity
The line break in pond.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
In the embodiment that the present invention is provided, a kind of battery pack sampling system broken thread detector and method are proposed, it leads to
The addition filtering voltage regulation module before battery cell voltage sampling port is crossed, the voltage pulsation shadow that external low-and high-frequency signal is brought is filtered out
Ring, improve sampling precision；Both the static characteristic of battery had been considered it is contemplated that the actual dynamic operation condition of battery, on the one hand not straight
Sampling battery monomer voltage is connect, but using the upper actuation voltage of sampling battery monomer as basis for estimation, by battery cell
Constant-current source module is pulled down before voltage sampling port in addition, the battery sampling to series connection provides or absorbs certain electric current, by electricity
On the one hand the upper actuation voltage of pond monomer is protected to thief hatch as basis for estimation, on the one hand improves voltage change
Resolution；In addition, judging whether sampling line breaks by way of cell voltage and electric current are combined, battery is improved dynamic
Burn out detection accuracy rate under operating mode, so as to ensure that the security of system.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of voltage acquisition system for battery pack broken thread detector, it is characterised in that including：
Filtering voltage regulation module, is connected with battery cell, the voltage ripple for filtering out battery cell caused by external interference, stable
The output voltage of battery cell；
Pull-up current source module, is connected with battery cell, for providing supply electric current during battery cell voltage acquisition
To measurement pin, so as to collect the upper pull-up voltage of battery cell；
Pull-down current source module, is connected with battery cell, and electric current is absorbed for being provided during battery cell voltage acquisition
To measurement pin, so as to collect the actuation voltage of battery cell；
Voltage acquisition module, for gathering the magnitude of voltage of each batteries monomer, and is supplied to burn out detection module to be handled；
Current acquisition module, the electric current for gathering battery pack, for the judgement of battery unusual service condition, and is supplied to burn out detection
Module is handled.
2. voltage acquisition system for battery pack broken thread detector according to claim 1, it is characterised in that the filtering is steady
Die block is made up of some filtering voltage regulation submodules, and each filtering voltage regulation submodule is connected with battery cell respectively.
3. voltage acquisition system for battery pack broken thread detector according to claim 1, it is characterised in that the filtering is steady
The filter regulator circuit that pressure submodule is made up of the electric capacity and resistance of some different parameters.
4. voltage acquisition system for battery pack broken thread detector according to any one of claim 1 to 3, its feature exists
In, the pull-up current source module is made up of some sub- pull-up current source modules, every sub- pull-up current source module respectively with electricity
The connection of pond monomer, what pull-up current source module provided 100 μ A during battery cell voltage acquisition supplies current to measurement
Pin, so as to collect the upper pull-up voltage of battery cell.
5. voltage acquisition system for battery pack broken thread detector according to any one of claim 1 to 3, its feature exists
In, the pull-down current source module is made up of some pull-down current sources submodule, each pull-down current source submodule respectively with electricity
Pond monomer connection, the absorption electric current that pull-down current source module provides 100 μ A during battery cell voltage acquisition is extremely measured
Pin, so as to collect the actuation voltage of battery cell.
6. voltage acquisition system for battery pack broken thread detector according to any one of claim 1 to 3, its feature exists
In the voltage acquisition module is included by AD sample circuits, AD correcting circuits and voltage modulate circuit.
7. voltage acquisition system for battery pack broken thread detector according to any one of claim 1 to 3, its feature exists
In the current acquisition module includes current sensor, voltage modulate circuit, AD sample circuits and AD correcting circuits.
8. voltage acquisition system for battery pack broken thread detector according to any one of claim 1 to 3, its feature exists
In in addition to burn out detection module, the burn out detection module is connected with voltage acquisition module and current acquisition module.
9. voltage acquisition system for battery pack broken thread detector according to claim 8, it is characterised in that the broken string inspection
Surveying the detection method of module includes：
The total current of sampling battery group；
Open pull-up current source module；
Open pull-down current source module；
The total current of sampling battery group, and judge whether curent change exceedes given threshold again, recognizes if given threshold is exceeded
Before and after battery cell voltage sample, battery is operated under dynamic operation condition, there occurs voltage pulsation, is easily produced erroneous judgement, is abandoned
This burn out detection；
If curent change is not less than given threshold, it is believed that battery is under the operating mode of geo-stationary, and battery cell voltage stabilization can
For carrying out burn out detection；
If the upper actuation voltage difference that N connects battery cell is less than the voltage threshold set, then it is assumed that the sampling of N-1 batteries
Line breaks.
10. a kind of voltage acquisition system for battery pack wire break detection method, it is characterised in that comprise the following steps：
S1, the total current of sampling battery group are simultaneously recorded as current_start；
S2, unlatching pull-up current source module, provide 100 μ A supply electric current, and gather electricity for the thief hatch of battery cell voltage
The upper pull-up voltage of pond monomer is deposited to cellpu (n)；
S3, unlatching pull-down current source module, provide 100 μ A absorption electric current, and gather electricity for the thief hatch of battery cell voltage
The actuation voltage of pond monomer is deposited to cellpd (n)；
S4, the again total current of sampling battery group are simultaneously recorded as current_now, judge whether curent change exceedes setting threshold
Value, before and after battery cell voltage sample is thought if exceeding given threshold, battery is operated under dynamic operation condition, there occurs voltage wave
It is dynamic, erroneous judgement is easily produced, this burn out detection is abandoned；
If S5, electric current are not less than given threshold, it is believed that battery is under the operating mode of geo-stationary, and battery cell voltage stabilization can
For carrying out burn out detection；
If the upper actuation voltage difference that S6, N connect battery cell is less than the voltage threshold set, then it is assumed that N-1 batteries
Line break.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337837.9A CN107167690B (en) | 2017-05-15 | 2017-05-15 | Device and method for detecting broken wire of battery pack voltage acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337837.9A CN107167690B (en) | 2017-05-15 | 2017-05-15 | Device and method for detecting broken wire of battery pack voltage acquisition system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107167690A true CN107167690A (en) | 2017-09-15 |
| CN107167690B CN107167690B (en) | 2023-08-01 |
Family
ID=59815982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710337837.9A Active CN107167690B (en) | 2017-05-15 | 2017-05-15 | Device and method for detecting broken wire of battery pack voltage acquisition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107167690B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108377016A (en) * | 2018-03-16 | 2018-08-07 | 东莞赛微微电子有限公司 | A kind of break detection circuit, detection method and supply unit |
| CN109782193A (en) * | 2018-12-13 | 2019-05-21 | 惠州市亿能电子有限公司 | A kind of method of discrimination of multiple branch circuit battery circuit open circuit |
| CN111537916A (en) * | 2020-05-28 | 2020-08-14 | 上海金脉汽车电子有限公司 | Voltage sampling chip power supply ground disconnection fault diagnosis method, device and equipment |
| CN112147517A (en) * | 2019-06-26 | 2020-12-29 | 比亚迪股份有限公司 | Battery pack detection device and system |
| CN112394302A (en) * | 2020-11-26 | 2021-02-23 | 江苏为恒智能科技有限公司 | Storage battery pack sampling line breakage detection device and method |
| WO2021179778A1 (en) * | 2020-03-13 | 2021-09-16 | 深圳市创芯微微电子有限公司 | Battery wire breakage detection circuit |
| CN113687265A (en) * | 2021-08-26 | 2021-11-23 | 广州小鹏智慧充电科技有限公司 | Method and device for detecting disconnection of battery management system, vehicle, and medium |
| CN113740749A (en) * | 2021-09-06 | 2021-12-03 | 中山华野新能源有限公司 | Automatic detection method and system for battery pack connection |
| CN114552707A (en) * | 2022-02-14 | 2022-05-27 | 福建时代星云科技有限公司 | Method and terminal for improving battery detection accuracy |
| CN116973808A (en) * | 2023-09-25 | 2023-10-31 | 宁德时代新能源科技股份有限公司 | Detection method and detection system for air defense detection of battery |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08106922A (en) * | 1994-10-04 | 1996-04-23 | Sanyo Electric Co Ltd | Charging device |
| US20100194424A1 (en) * | 2009-02-03 | 2010-08-05 | TDI Power | Hybrid load systems including a dynamic electronic load and passive resistive load modules |
| US20120242344A1 (en) * | 2009-12-02 | 2012-09-27 | Toyota Jidosha Kabushiki Kaisha | Abnormality detecting system for battery assembly |
| CN102834997A (en) * | 2010-01-14 | 2012-12-19 | 德克萨斯仪器股份有限公司 | Battery cell tab monitor and method |
| CN102967788A (en) * | 2011-09-01 | 2013-03-13 | 比亚迪股份有限公司 | Line broken detection circuit of battery and detection method thereof |
| CN103399282A (en) * | 2013-08-07 | 2013-11-20 | 清华大学 | Single battery fault diagnosing method |
| CN103454591A (en) * | 2012-05-31 | 2013-12-18 | 瑞萨电子株式会社 | Semiconductor device, battery state monitoring module, and vehicle system |
| CN103825252A (en) * | 2012-11-19 | 2014-05-28 | 比亚迪股份有限公司 | Protective device and protective system for disconnection of battery connection |
| CN204129192U (en) * | 2014-06-27 | 2015-01-28 | 深圳Tcl新技术有限公司 | Power-supply fluctuation analyser |
| CN105277902A (en) * | 2015-11-27 | 2016-01-27 | 中颖电子股份有限公司 | Battery abnormal-state detection circuit and battery abnormal-state detection circuit system |
| CN106130112A (en) * | 2016-07-15 | 2016-11-16 | 东莞理工学院 | Lithium battery charge and discharge management system and method |
| CN205982571U (en) * | 2016-07-20 | 2017-02-22 | 深圳市沃特玛电池有限公司 | Battery broken string detection circuitry |
| CN207301215U (en) * | 2017-05-15 | 2018-05-01 | 湖南利能科技股份有限公司 | A kind of voltage acquisition system for battery pack wire breakage detector |
-
2017
- 2017-05-15 CN CN201710337837.9A patent/CN107167690B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08106922A (en) * | 1994-10-04 | 1996-04-23 | Sanyo Electric Co Ltd | Charging device |
| US20100194424A1 (en) * | 2009-02-03 | 2010-08-05 | TDI Power | Hybrid load systems including a dynamic electronic load and passive resistive load modules |
| US20120242344A1 (en) * | 2009-12-02 | 2012-09-27 | Toyota Jidosha Kabushiki Kaisha | Abnormality detecting system for battery assembly |
| CN102834997A (en) * | 2010-01-14 | 2012-12-19 | 德克萨斯仪器股份有限公司 | Battery cell tab monitor and method |
| CN102967788A (en) * | 2011-09-01 | 2013-03-13 | 比亚迪股份有限公司 | Line broken detection circuit of battery and detection method thereof |
| CN103454591A (en) * | 2012-05-31 | 2013-12-18 | 瑞萨电子株式会社 | Semiconductor device, battery state monitoring module, and vehicle system |
| CN103825252A (en) * | 2012-11-19 | 2014-05-28 | 比亚迪股份有限公司 | Protective device and protective system for disconnection of battery connection |
| CN103399282A (en) * | 2013-08-07 | 2013-11-20 | 清华大学 | Single battery fault diagnosing method |
| CN204129192U (en) * | 2014-06-27 | 2015-01-28 | 深圳Tcl新技术有限公司 | Power-supply fluctuation analyser |
| CN105277902A (en) * | 2015-11-27 | 2016-01-27 | 中颖电子股份有限公司 | Battery abnormal-state detection circuit and battery abnormal-state detection circuit system |
| CN106130112A (en) * | 2016-07-15 | 2016-11-16 | 东莞理工学院 | Lithium battery charge and discharge management system and method |
| CN205982571U (en) * | 2016-07-20 | 2017-02-22 | 深圳市沃特玛电池有限公司 | Battery broken string detection circuitry |
| CN207301215U (en) * | 2017-05-15 | 2018-05-01 | 湖南利能科技股份有限公司 | A kind of voltage acquisition system for battery pack wire breakage detector |
Non-Patent Citations (3)
| Title |
|---|
| 李匡成，刘 政: "铅酸蓄电池动态模型参数辨识及仿真验证", 工程科技Ⅱ辑 * |
| 王慕之等: "PEMFC电池堆单体电池电压巡检系统开发与实验", 工程科技Ⅰ辑;工程科技Ⅱ辑 * |
| 王诗磊等: "基于虚拟仪器的锂电池监测系统设计研究", 《装备制造技术》, no. 08 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108377016A (en) * | 2018-03-16 | 2018-08-07 | 东莞赛微微电子有限公司 | A kind of break detection circuit, detection method and supply unit |
| CN109782193B (en) * | 2018-12-13 | 2023-10-24 | 惠州市亿能电子有限公司 | Method for judging circuit breaking of multi-branch battery pack |
| CN109782193A (en) * | 2018-12-13 | 2019-05-21 | 惠州市亿能电子有限公司 | A kind of method of discrimination of multiple branch circuit battery circuit open circuit |
| CN112147517A (en) * | 2019-06-26 | 2020-12-29 | 比亚迪股份有限公司 | Battery pack detection device and system |
| WO2021179778A1 (en) * | 2020-03-13 | 2021-09-16 | 深圳市创芯微微电子有限公司 | Battery wire breakage detection circuit |
| CN111537916A (en) * | 2020-05-28 | 2020-08-14 | 上海金脉汽车电子有限公司 | Voltage sampling chip power supply ground disconnection fault diagnosis method, device and equipment |
| CN112394302A (en) * | 2020-11-26 | 2021-02-23 | 江苏为恒智能科技有限公司 | Storage battery pack sampling line breakage detection device and method |
| CN113687265A (en) * | 2021-08-26 | 2021-11-23 | 广州小鹏智慧充电科技有限公司 | Method and device for detecting disconnection of battery management system, vehicle, and medium |
| CN113687265B (en) * | 2021-08-26 | 2024-06-11 | 广州小鹏智慧充电科技有限公司 | Method and device for detecting disconnection of battery management system, vehicle and medium |
| CN113740749A (en) * | 2021-09-06 | 2021-12-03 | 中山华野新能源有限公司 | Automatic detection method and system for battery pack connection |
| CN114552707A (en) * | 2022-02-14 | 2022-05-27 | 福建时代星云科技有限公司 | Method and terminal for improving battery detection accuracy |
| CN114552707B (en) * | 2022-02-14 | 2022-11-08 | 福建时代星云科技有限公司 | Method and terminal for improving battery detection accuracy |
| WO2023151125A1 (en) * | 2022-02-14 | 2023-08-17 | 福建时代星云科技有限公司 | Method and terminal for improving battery test accuracy |
| CN116973808A (en) * | 2023-09-25 | 2023-10-31 | 宁德时代新能源科技股份有限公司 | Detection method and detection system for air defense detection of battery |
| CN116973808B (en) * | 2023-09-25 | 2024-02-06 | 宁德时代新能源科技股份有限公司 | Detection method and detection system for air defense detection of battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107167690B (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107167690A (en) | A kind of voltage acquisition system for battery pack broken thread detector and method | |
| CN103439577B (en) | The insulation resistance detection system of electric automobile power battery and detection method | |
| CN103019234A (en) | Battery management and acquisition subsystem of new energy vehicle and method for controlling battery management and acquisition subsystem | |
| CN207232324U (en) | A kind of fault diagnosis circuit of low side driving | |
| CN102856886B (en) | A kind of batteries of electric automobile protective circuit | |
| CN105259458B (en) | Verify battery bag management system insulating monitoring precision and earth leakage protective apparatus and method | |
| CN106771637A (en) | Electric line inspection earthing wire state on-line monitoring method and device | |
| CN108287536A (en) | A kind of cathode contact device sintering detection apparatus and method | |
| CN108501752A (en) | Battery management system | |
| CN102097834B (en) | Diagnosis method of lithium battery equalizing system | |
| CN1963553A (en) | System and method for testing battery | |
| CN102735915B (en) | Battery voltage detector and battery voltage detection method | |
| CN205376676U (en) | Battery pack management system | |
| CN107492684A (en) | The battery management system and vehicle of electrokinetic cell | |
| CN103986195A (en) | Lead-acid-storage-battery management system | |
| CN109365325A (en) | A kind of manufacturing method and system of battery | |
| CN107465237A (en) | Battery control device and system | |
| CN209159923U (en) | A kind of electronic automobile-used micro computer fault self-checking system | |
| CN205354275U (en) | Anti -removing wrist strap | |
| CN106814295A (en) | A kind of multi-channel circuit test device and brain depth electrode method of testing | |
| CN207799007U (en) | The Insulation Inspection System of the anti-reverse charge protection of direct-current charging post | |
| CN207301215U (en) | A kind of voltage acquisition system for battery pack wire breakage detector | |
| CN108226790A (en) | Equalization circuit state detection device and method, battery pack and battery management system | |
| CN108377016A (en) | A kind of break detection circuit, detection method and supply unit | |
| CN105966257B (en) | A kind of method of the under-voltage charging of Vehicular dynamic battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230824 Address after: F1-2, Building A, Weisheng Building, No. 359 Yinpenling South Road, Yinpenling Street, Yuelu District, Changsha City, Hunan Province, 410006 Patentee after: Hunan Nake New Materials Co.,Ltd. Address before: 410205 No.11 workshop of Weisheng Science Park Phase II project, no.468 tongzipo West Road, national high tech Industrial Development Zone, Changsha City, Hunan Province Patentee before: HUNAN LINENG TECHNOLOGY CO.,LTD. |