CN103163471A - Battery sensor and battery monitoring system - Google Patents
Battery sensor and battery monitoring system Download PDFInfo
- Publication number
- CN103163471A CN103163471A CN2012104378481A CN201210437848A CN103163471A CN 103163471 A CN103163471 A CN 103163471A CN 2012104378481 A CN2012104378481 A CN 2012104378481A CN 201210437848 A CN201210437848 A CN 201210437848A CN 103163471 A CN103163471 A CN 103163471A
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- Prior art keywords
- battery
- voltage
- synthetic circuit
- temperature
- current
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- 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.)
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 5
- 208000032953 Device battery issue Diseases 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a battery sensor and a battery monitoring system. According to one aspect of the invention, the battery sensor is characterized by comprising a first resistor which allocating the total voltage in preset times to a first battery and a second battery in series with the cathode terminal of the cathode terminal of the first battery, a second resistor in series with the first and second batteries, a first comprehensive circuit receiving the total voltage and voltage at both ends of the second resistor to measure the total voltage and the directional current of the first and second batteries, and a second comprehensive circuit receiving the voltage of the second battery at different pole from the first comprehensive circuit and voltage at both ends of a galvanometer to measure the voltage of the second battery and the inverse current of the directional current.
Description
Technical field
The present invention relates to battery sensor, relate in more detail battery sensor and battery monitor system, can stably monitor the cell voltage of the vehicle that uses a plurality of batteries.
Background technology
In recent years, the vehicle as the above voltage of use 12V of hybrid vehicle is increasing gradually.For example, using the vehicle of the multiple voltage of 12V, is that a plurality of 12V batteries are connected in series to use.
In addition, because vehicle can only could ensure normally operation under cell voltage within the specific limits, therefore, can pass through IBS(Intelligent Battery Sensor, intelligent battery sensor) detect that cell voltage, electric current and temperature carry out that the monitoring battery charging is controlled and whether extremely.
12V multiple voltage detecting IBS in the past utilizes a 12V electricity with ASIC, the cell voltage of 24V to be monitored.Therefore, the battery total voltage can only be measured, the voltage imbalance between each battery can not be detected.
Summary of the invention
(technical matters that will solve)
Create in order to solve technical matters as above, the object of the present invention is to provide battery sensor and battery monitor system, can monitor respectively a plurality of cell voltages with synthetic circuit with a plurality of monitoring.
(means of dealing with problems)
Battery sensor according to one side of the present invention is characterized in that, comprising: with the first battery with, the voltage total voltage of the second battery that is connected in series with the negative pole end of described the first battery is distributed with the multiple of having set; The second resistance is connected in series with described first and second battery; The first synthetic circuit receives the both end voltage of described total voltage and described the second resistance, measures a directional current of described total voltage and described first and second battery; And the second synthetic circuit, receive the voltage of described the second battery and the both end voltage of described electric current device from described the first synthetic circuit different polar regions, measure described the second battery voltage and with the opposite direction electric current of a described directional current.
According to another side of the present invention, monitor the first battery with, the battery monitor system of the second battery that is connected in series with the negative pole end of described the first battery, it is characterized in that, comprise: the first synthetic circuit, detect from total voltage, the forward current of described first and second battery and the temperature of described the first battery of the positive terminal output of described the first battery; The second synthetic circuit detects the temperature of backward current and described second battery of the voltage of described the second battery, described first and second battery; And electronic control unit (Electronic Control Unit), be connected with described first and second synthetic circuit by vehicle network, receive the temperature of described total voltage, the voltage of described the second battery, described forward current, described backward current, described first and second battery by described vehicle network, and use it to control the charging of described first and second battery, confirm described first and second battery whether extremely.
(effect of invention)
According to the present invention, therefore the charged state that voltage that can be by confirming respectively a plurality of batteries and temperature are confirmed battery and the cell voltage that causes because of degree of aging unbalance, can send warning and the measure of a battery in a plurality of batteries of preferential replacement.
In addition, the present invention makes current measurement detect with the polarity difference of the both end voltage of resistance, thereby can confirm battery current two-wayly by a plurality of ASIC, therefore, to common cause trouble (Common Cause Failures) more steadily and surely.
In addition, the present invention comes monitoring battery with a plurality of ASIC, therefore when having an ASIC to damage, can carry out by remaining ASIC the function of diagnosis battery failures, is therefore using ISG(Idle Stop; Go) during function, the situation as the danger that can't restart that can avoid that the diagnostic error of battery sensor causes.
In addition, the present invention can satisfy ISO 26262 ASIL C grades by a plurality of ASIC.
Description of drawings
Fig. 1 uses the circuit diagram of 24V voltage monitoring use battery sensor according to an embodiment of the invention.
Embodiment
By the embodiment of reference accompanying drawing and following detailed description, advantage of the present invention, feature and realize that their method can be clearer and more definite.But the invention is not restricted to following the disclosed embodiments, is to be realized by multiple different form.Embodiments of the invention are just for intactly openly the present invention, and provide in order to allow the general technical staff of the technical field of the invention easily understand the invention category, and the present invention is that the record with claims is as the criterion.On the one hand, the technical terms that uses in this instructions is for explanation embodiment, is not to limit the present invention.The singulative of mentioning in instructions in the situation that be not particularly limited, comprises plural form." the comprising (comprises) " of using in instructions or " (comprising) that comprise " do not get rid of is, in the element that is mentioned to, step, move and/or be beyond assembly, exist or add other more than one elements, step beyond it, move and/or be assembly.
The present invention relates to monitor the battery sensor of 12 multiple cell voltages.Below, the facility in order to illustrate in this instructions describes the battery sensor of monitoring the 24V cell voltage.
Below, with reference to accompanying drawing, embodiments of the invention are described in detail.The firstth, use the circuit diagram of 24V voltage monitoring use battery sensor according to an embodiment of the invention.
As shown in Figure 1, the 24V voltage monitoring with battery sensor 100, comprising: voltage distribution resistance Rd, current measurement resistance Rs, the first synthetic circuit IC1 and the second synthetic circuit IC2 according to an embodiment of the invention.
Voltage distribution is the resistance (for example, 1 Ω) of the following low-resistance value of 100 Ω with resistance Rd, together total voltage is assigned as half with the internal distribution resistance R in of the first synthetic circuit IC1.Herein, total voltage for the voltage of first and second cell voltage of mutually being connected in series and.
Current measurement is connected in the shunt (ShuntResistor) of the negative pole end of the second battery with resistance Rs conduct, be very little resistance, for example, 100 μ Ω, the first synthetic circuit IC1 and the second synthetic circuit IC2 utilize current measurement to measure battery current with the both end voltage of resistance Rs.
The first synthetic circuit IC1, measure total voltage, a directional current of first and second battery, the temperature of the first battery, and by LIN(local internet network Local Interconnect Network) be communicated to main electronic control unit (Master Electronic Control Unit, ECU) 200.
The first synthetic circuit IC1, comprise: internal distribution resistance R in, the first voltage detecting impact damper 11, the first temperature sensor TH1 and the first current detecting impact damper 12, and can be ASIC(Application Specific integrated Circuits, special IC).
Internal distribution resistance R in and voltage distribution together are assigned as total voltage half with resistance Rd.
The first voltage detecting impact damper 11 is measured the value of total voltage/2, and is communicated to main electronic control unit 200.For example, when total voltage was 24V, the first voltage detecting impact damper 11 can be measured 12V.
The first temperature sensor TH1 measures the temperature of the first battery, and is communicated to main electronic control unit 200.
The first current detecting impact damper 12, the both end voltage of received current measuring resistance Rs is measured a directional current of first and second battery, and is communicated to main electronic control unit 200.For example, the end that the first current detecting impact damper 12 can received current measuring resistance Rs is IN-, and the other end of received current measuring resistance Rs is IN+.
The second synthetic circuit IC2, measure voltage, the other direction electric current of first and second battery and the temperature of the second battery of the second battery that the negative pole end with the first battery is connected in series, and by LIN(Local Interconnect Network) be communicated to main electronic control unit 200.
The second synthetic circuit IC2 comprises: second voltage detection buffer 21, the second temperature sensor TH2 and the second current detecting impact damper 22, and can be ASIC.
Second voltage detection buffer 21 is measured the second cell voltage, and is communicated to main electronic control unit 200.
The second temperature sensor TH2 measures the temperature of the second battery, and is communicated to main electronic control unit 200.
The second current detecting impact damper 22, the both end voltage of received current measuring resistance Rs is measured the other direction electric current of first and second battery, and is communicated to main electronic control unit 200.For example, the end that the first current detecting impact damper 22 can received current measuring resistance Rs is IN+, and the other end of received current measuring resistance Rs is IN-.
On the other hand, although for example understand in above-mentioned example, the first synthetic circuit IC1 comprises internal distribution resistance, and the situation of using resistance Rd and internal distribution resistance that total voltage is distributed and received by voltage distribution, but, do not possess in the inside of the first synthetic circuit IC1 when independently distributing resistance, can use the non-essential resistance of the first synthetic circuit IC1 that resistance Rd and voltage distribution be connected in parallel with resistance Rd by voltage distribution, total voltage is assigned as half.
In addition, be different from above-mentioned explanation, also can for, the first synthetic circuit IC1 detects the other direction electric current of first and second battery, the second synthetic circuit IC2 detects a directional current of first and second battery.
Main electronic control unit 200, the total voltage that confirmation receives from the first synthetic circuit IC1/2, a directional current of first and second battery and the temperature of the first battery; Voltage, the other direction electric current of first and second battery and the temperature of the second battery of the second battery that receives from the second synthetic circuit IC2, and corresponding its control the battery charging, or monitor each battery whether extremely.
Main electronic control unit 200 can be confirmed the voltage of the first battery by the voltage difference of total voltage and the second battery, and confirm the unbalance of each cell voltage.At this moment, main electronic control unit 200 when having at least the voltage of a battery to break away from the critical range of having set, can send the abnormality warnings of at least one battery in the voltage of the voltage of the first battery and the second battery.
On the other hand, although for example understand the situation of monitoring the 24V cell voltage with 24V in above-mentioned example, when vehicle uses three above 12V cell voltages, also need battery sensor monitoring 36V or its above cell voltage.At this moment, battery sensor possesses the synthetic circuit corresponding with the battery number, and monitors respectively the voltage of total voltage and the individual cell of a plurality of batteries according to synthetic circuit, and can monitor the voltage of individual cell and the electric current of temperature and multiple directions.
As mentioned above, therefore the charged state that the voltage that the present invention can be by confirming respectively a plurality of batteries and temperature are confirmed battery and the cell voltage that causes because of degree of aging unbalance, can send warning and the measure of a battery in a plurality of batteries of preferential replacement.
In addition, the present invention makes current measurement detect with the extremely difference of the both end voltage of resistance, thereby can confirm battery current two-wayly by a plurality of ASIC, therefore, to common cause trouble (Common Cause Failures) more steadily and surely.
In addition, the present invention comes monitoring battery with a plurality of ASIC, therefore when having an ASIC to damage, can carry out by remaining ASIC the function of diagnosis battery failures, is therefore using ISG(Idle Stop; Go) during function, the situation as the danger that can't restart that can avoid that the diagnostic error of battery sensor causes.
Abovely describe the present invention with reference to the embodiment shown in accompanying drawing, but this is only exemplary embodiment, the general technical staff of the technical field of the invention should be appreciated that and can therefrom realize various deformation and other embodiment that are equal to.Therefore, real technical protection scope of the present invention should be determined by appended technical scheme.
Claims (8)
1. a battery sensor, is characterized in that, comprising:
The first resistance, with the first battery with, the total voltage of the voltage sum of the second battery that is connected in series with the negative pole end of described the first battery is distributed with the multiple of having set;
The second resistance is connected in series with described first and second battery;
The first synthetic circuit receives the both end voltage of described total voltage and described the second resistance, measures a directional current of described total voltage and described first and second battery; And
The second synthetic circuit receives the voltage of described the second battery and the both end voltage of described electric current device from described the first synthetic circuit different polar regions, measure described the second battery voltage and with the backward current of a described directional current.
2. battery sensor according to claim 1, is characterized in that, described first and second synthetic circuit comprises:
Temperature sensor is measured respectively the temperature of described first and second battery.
3. battery sensor according to claim 2, is characterized in that,
Described the first synthetic circuit by vehicle network, is communicated to the temperature of described total voltage, a described directional current, described the first battery the electronic control unit (Electronic Control Unit) of described first and second battery of monitoring,
Described the second synthetic circuit by described vehicle network, is communicated to described electronic control unit with the temperature of described the second cell voltage, described backward current, described the second battery.
4. battery sensor according to claim 1, is characterized in that, also comprises the 3rd battery, when being connected in series in the negative pole end of described the second battery, also comprises: the 3rd synthetic circuit, detect voltage and the temperature of described the 3rd battery,
Described the first synthetic circuit detects the total voltage of described the first battery, described the second battery and described the 3rd battery and the temperature of described the first battery,
Described the second synthetic circuit detects the total voltage of described second and third battery and the temperature of described the second battery.
5. battery monitor system, monitoring the first battery with, the supervisory system of the second battery that is connected in series with the negative pole end of described the first battery is characterized in that, comprising:
The first synthetic circuit detects from total voltage, the forward current of described first and second battery and the temperature of described the first battery of the positive terminal output of described the first battery;
The second synthetic circuit detects the temperature of backward current and described second battery of the voltage of described the second battery, described first and second battery; And
Electronic control unit (Electronic Control Unit), be connected with described first and second synthetic circuit by vehicle network, receive the temperature of described total voltage, the voltage of described the second battery, described forward current, described backward current, described first and second battery by described vehicle network, and use it to control the charging of described first and second battery, confirm described first and second battery whether extremely.
6. battery monitor system according to claim 5, is characterized in that,
Described electronic control unit, utilize the poor of described total voltage and described the second cell voltage, confirm the voltage of described the first battery, and the voltage that has a battery in the voltage of the voltage of described the first battery and described the second battery at least sends the abnormal warning of described at least one battery when breaking away from the critical range of having set.
7. battery monitor system according to claim 5, is characterized in that, when described the first synthetic circuit detects the backward current of described first and second battery,
Described the second synthetic circuit, the forward current of described first and second battery of detection.
8. battery monitor system according to claim 5, is characterized in that,
Described vehicle network is LIN(Local Interconnect Network).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110132988A KR101854456B1 (en) | 2011-12-12 | 2011-12-12 | Battery Sensor and Battery Monitoring System |
| KR10-2011-0132988 | 2011-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103163471A true CN103163471A (en) | 2013-06-19 |
| CN103163471B CN103163471B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210437848.1A Active CN103163471B (en) | 2011-12-12 | 2012-11-06 | Battery sensor and battery monitoring system |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101854456B1 (en) |
| CN (1) | CN103163471B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777341A (en) * | 2014-01-09 | 2015-07-15 | 罗伯特·博世有限公司 | Determing current intensity of current flowing in or out battery |
| CN105388421A (en) * | 2014-09-02 | 2016-03-09 | 现代摩比斯株式会社 | Battery sensor and battery monitoring system |
| CN109774625A (en) * | 2017-11-13 | 2019-05-21 | 现代自动车株式会社 | Vehicle electronics, the method for determining internal resistance and the vehicle with the vehicle electronics |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102299448B1 (en) * | 2014-11-24 | 2021-09-08 | 현대모비스 주식회사 | Battery sensor on battery bridge and method for sensing voltage using thereof |
| KR102305523B1 (en) * | 2014-12-02 | 2021-09-27 | 현대모비스 주식회사 | Apparatus and method for supplying power of battery |
| KR102375172B1 (en) * | 2015-11-10 | 2022-03-16 | 현대자동차주식회사 | Monitoring apparatus of battery for vehicle and method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103163471B (en) | 2017-04-12 |
| KR20130066241A (en) | 2013-06-20 |
| KR101854456B1 (en) | 2018-05-03 |
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