CN108688499A - Temperature of powered cell Acquisition Circuit and system, electric vehicle - Google Patents
Temperature of powered cell Acquisition Circuit and system, electric vehicle Download PDFInfo
- Publication number
- CN108688499A CN108688499A CN201810521586.4A CN201810521586A CN108688499A CN 108688499 A CN108688499 A CN 108688499A CN 201810521586 A CN201810521586 A CN 201810521586A CN 108688499 A CN108688499 A CN 108688499A
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- Prior art keywords
- temperature
- processor
- circuit
- powered cell
- electric power
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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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Classifications
-
- 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
-
- 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
-
- 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 present invention discloses a kind of temperature of powered cell Acquisition Circuit, temperature of powered cell acquisition system and electric vehicle, and wherein temperature of powered cell Acquisition Circuit includes processor, controllable electric power, channel selection circuit and multiple temperature sampling circuits;Temperature sampling circuit, for acquiring temperature of powered cell;Controllable electric power, for powering for temperature sampling circuit;Channel selection circuit, the temperature information for acquiring temperature sampling circuit are transmitted to processor;Processor judges whether to need to acquire battery temperature according to demand for control, and when that need not acquire battery temperature, control controllable electric power stops powering to temperature sampling circuit;When needing to acquire battery temperature, control controllable electric power powers to temperature sampling circuit.Technical solution of the present invention reduces the power consumption of temperature of powered cell Acquisition Circuit, improves the stability of temperature collection circuit.
Description
Technical field
The present invention relates to battery temperature detection technique field, more particularly to a kind of temperature of powered cell Acquisition Circuit and it is
System, electric vehicle.
Background technology
Temperature sensing circuit in the temperature of powered cell detecting system of existing electric vehicle, generally using temperature sensor into
Trip temperature acquires, and temperature sensor is powered by common power, no matter temperature sensor is either with or without progress temperature sampling, power supply
It is powered always, causes the loss of circuit bigger.
Invention content
The main object of the present invention is to provide a kind of temperature of powered cell Acquisition Circuit, it is intended to reduce temperature of powered cell and adopt
The power consumption of collector.
To achieve the above object, temperature of powered cell Acquisition Circuit proposed by the present invention, the temperature of powered cell acquisition
Circuit includes processor, controllable electric power, channel selection circuit and multiple temperature sampling circuits;
The temperature sampling circuit, for acquiring temperature of powered cell;
The controllable electric power, for powering for temperature sampling circuit;
The channel selection circuit, the temperature information for acquiring temperature sampling circuit are transmitted to processor;
The processor judges whether to need to acquire battery temperature, need not acquire battery temperature according to demand for control
When, it controls the controllable electric power and stops powering to the temperature sampling circuit;It, can described in control when needing to acquire battery temperature
Control power supply powers to the temperature sampling circuit.
Preferably, the processor is additionally operable to sample controllable electric power output voltage, judges that the output voltage is
It is no in predeterminated voltage section, if not in predeterminated voltage section, control controllable electric power adjust output voltage;
The processor is additionally operable to judge whether the output voltage is more than predetermined voltage threshold, if being more than predeterminated voltage threshold
Value, the processor send out fault-signal.
Preferably, the processor is additionally operable to controllable electric power output pulse signal, and controllable electric power detects the processing
When device stops sending pulse signal more than preset time threshold, the controllable electric power sends reset signal to the processor, with
The processor is controlled to be resetted.
Preferably, the processor includes power control terminal, the first collection terminal, the second collection terminal and path control terminal;Institute
The power control terminal for stating processor is connect with the controlled end of the controllable electric power, and the first collection terminal of the processor, second are adopted
Collection end is connect with the signal output end of the channel selection circuit, the path control terminal of the processor and the channel selecting
The selection end of circuit connects;The signal output of the channel selection circuit signal input part and the temperature sampling circuit connects,
The power end of the temperature sampling circuit is connect with the output end of the controllable electric power.
Preferably, the signal transmission passage in the selection circuit of the processor selector channel, passes through the first collection terminal respectively
And second collection terminal obtain corresponding temperature sample circuit acquisition temperature information.
Preferably, the temperature value of the processor acquires the first collection terminal temperature value and the acquisition of the second collection terminal carries out
Compare, judge whether sampling is reliable according to comparison result, when being judged as sampling reliable, by the temperature value of the first collection terminal acquisition
Average value with the temperature value of the second collection terminal acquisition is as sample temperature.
Preferably, when being judged as sampling unreliable, the processor exports AD mapping fault signals.
Preferably, the processor makees the temperature value of temperature value and the second collection terminal that the first collection terminal acquires
The absolute value for making poor difference is compared by difference with preset reference threshold value, will when the absolute value is less than preset reference threshold value
The average value of the temperature value of first collection terminal acquisition and the temperature value of the second collection terminal acquisition is as sample temperature.
To achieve the above object, the present invention also proposes a kind of temperature of powered cell acquisition system, the temperature of powered cell
Acquisition system includes main controller and multiple temperature of powered cell Acquisition Circuits as described above;The main controller with it is multiple described dynamic
Power battery temperature Acquisition Circuit is separately connected.
The present invention also proposes that a kind of electric vehicle, the electric vehicle include temperature of powered cell acquisition as described above system
System.
Technical solution of the present invention by the way that processor, controllable electric power, channel selection circuit and multiple temperature sampling circuits is arranged,
Form a kind of temperature of powered cell Acquisition Circuit.Processor judges whether to need to acquire battery temperature according to demand for control,
When need not acquire battery temperature, controls the controllable electric power and stop powering to the temperature sampling circuit;It is needing to acquire electricity
When the temperature of pond, controls the controllable electric power and power to the temperature sampling circuit, reduce the power consumption of temperature sampling circuit, to
Reduce the power consumption of temperature of powered cell Acquisition Circuit.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of temperature of powered cell Acquisition Circuit of the present invention;
Fig. 2 is the functional block diagram of one embodiment of temperature of powered cell acquisition system of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 300 | Processor | SEN1~SENn | Temperature sensor |
| 200 | Channel selection circuit | 10 | Temperature of powered cell Acquisition Circuit |
| 100 | Controllable electric power | 20 | Main controller |
| R1~Rn | Resistance |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution occurs
It is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also not the present invention claims protection
Within the scope of.
The present invention proposes a kind of temperature of powered cell Acquisition Circuit.In one embodiment, it is applied to acquisition automobile power electricity
The temperature in pond.It is generally necessary to the vehicle for using power battery includes pure electric vehicle EV, hybrid electric vehicle HEV, plug-in hybrid power
Vehicle PHEV, fuel-cell vehicle FCV etc..
Referring to Fig.1, in embodiments of the present invention, the temperature of powered cell Acquisition Circuit proposed by the present invention, the power
Battery temperature Acquisition Circuit includes processor 300, controllable electric power 100, channel selection circuit 200 and multiple temperature sampling circuits.
The temperature sampling circuit, for acquiring temperature of powered cell.In the present embodiment, temperature sampling circuit includes temperature
Spend sensor.Power battery in electric vehicle is the core component of electric vehicle, and continuous electric energy is provided for electric vehicle.It is dynamic
Power battery is by needing multiple temperature sensors come collecting temperature, to fully understand the Wen Sheng of power battery, thus corresponding sets
Multiple temperature sampling circuits are set.
The controllable electric power 100, for powering for temperature sampling circuit.In the present embodiment, controllable electric power 100 is output electricity
The precision voltage source of pressure, current adjustment section can be that temperature sampling circuit exports reliable and stable power supply.
The channel selection circuit 200, the temperature information for acquiring temperature sampling circuit are transmitted to processor 300.
It should be noted that the temperature information that temperature sampling circuit acquires is transmitted to processor 300 by channel selection circuit 200 successively,
Realize the temperature information that processor 300 receives each temperature sampling circuit input using a port I/O.
The processor 300 judges whether to need to acquire battery temperature, need not acquire battery temperature according to demand for control
When spending, controls the controllable electric power 100 and stop powering to the temperature sampling circuit;When needing to acquire battery temperature, control
The controllable electric power 100 powers to the temperature sampling circuit.
It is worth noting that usual processor 300 is the period according to setting, temperature sampling is carried out to power battery.
Therefore, in non-sampled period, processor 300 can determine whether as that need not acquire battery temperature, described controllable so as to control
Power supply 100 stops powering to the temperature sampling circuit.In sampling period, processor 300 is judged as needing to acquire battery temperature,
Processor 300 controls the controllable electric power 100 and powers to the temperature sampling circuit at this time.
Technical solution of the present invention is by being arranged processor 300, controllable electric power 100, channel selection circuit 200 and multiple temperature
Sample circuit forms a kind of temperature of powered cell Acquisition Circuit.Processor 300 judges whether to need to acquire according to demand for control
Battery temperature controls the controllable electric power 100 and stops supplying the temperature sampling circuit when that need not acquire battery temperature
Electricity;When needing to acquire battery temperature, controls the controllable electric power 100 and power to the temperature sampling circuit, reduce temperature
The power consumption of sample circuit, to reduce the power consumption of temperature of powered cell Acquisition Circuit.
Further, the processor 300 is additionally operable to sample 100 output voltage of controllable electric power, judge described defeated
Go out voltage whether in predeterminated voltage section, if not in predeterminated voltage section, control controllable electric power 100 adjusts output voltage;
The processor 300 is additionally operable to judge whether the output voltage is more than predetermined voltage threshold, if being more than predetermined voltage threshold, institute
It states processor 300 and sends out fault-signal.
It is understood that when detecting that 100 output voltage of controllable electric power is excessive, 300 corresponding control of processor can
Controlling power supply 100 reduces output voltage;When detecting that 100 output voltage of controllable electric power is too small, 300 corresponding control of processor can
It controls power supply 100 and increases output voltage.In this way, the output voltage of controllable electric power 100 can be made to be maintained at a suitable section
Within, improve the stability of output voltage.Since controllable electric power output voltage has error, and temperature value is the electricity by detection
Pressure value calculates that the processor 300 detects the voltage of controllable electric power, improves temperature detecting precision.
Further, it is additionally provided with predetermined voltage threshold in processor 300, when the output voltage detected is default more than this
When voltage threshold, illustrate controllable electric power 100 there are failure, need to stop exporting immediately, to prevent from causing to damage to temperature sensor
Evil.
Further, the processor 300 is additionally operable to 100 output pulse signal of controllable electric power, and controllable electric power 100 is examined
It measures the processor 300 to stop sending pulse signal when being more than preset time threshold, the controllable electric power 100 is to the processing
Device 300 sends reset signal, is resetted with controlling the processor 300.
In practical work process, processor 300 causes processor 300 to be in due to electromagnetic interference or faults itself
Crash state, this leads to systemic breakdown.To improve the reliability of processor 300, in the present embodiment, processor 300 is to controllable electric
Source 100 sends pulse signal according to predetermined period, and controllable electric power 100 is detected the pulse signal, when counting on processor
300 in preset time threshold when not emitting pulse signal, illustrates that processor 300 crashes, controllable electric power 100 is defeated in turn at this time
Go out reset signal to processor 300, so that processor 300 is resetted.
Specifically, the processor 300 includes power control terminal, the first collection terminal, the second collection terminal and path control terminal;
The power control terminal of the processor 300 is connect with the controlled end of the controllable electric power 100, and the first of the processor 300 adopts
Collection end, the second collection terminal are connect with the signal output end of the channel selection circuit 200, the channel control of the processor 300
End processed is connect with the selection end of the channel selection circuit 200;200 signal input part of the channel selection circuit and the temperature
The signal output connection of sample circuit, the power end of the temperature sampling circuit are connect with the output end of the controllable electric power 100.
Further, the signal transmission passage in 300 selector channel selection circuit 200 of the processor passes through respectively
One collection terminal and the second collection terminal obtain the temperature information of corresponding temperature sample circuit acquisition.
Further, the temperature of the processor 300 acquires the first collection terminal temperature value and the acquisition of the second collection terminal
Value is compared, and judges whether sampling is reliable according to comparison result, when being judged as sampling reliable, by the acquisition of the first collection terminal
The average value of temperature value and the temperature value of the second collection terminal acquisition is as sample temperature.It is described when being judged as sampling unreliable
Processor 300 exports AD mapping fault signals.In this way, improving the reliability of temperature sampling.
Further, the temperature value for the temperature value and the second collection terminal that the processor 300 acquires the first collection terminal into
It is poor that row is made, and the absolute value for making poor difference is compared with preset reference threshold value, when the absolute value is less than preset reference threshold value
When, using the average value of the temperature value of the first collection terminal acquisition and the temperature value of the second collection terminal acquisition as sample temperature.
In the present embodiment, it is poor by the temperature value of the temperature value and the second collection terminal that acquire the first collection terminal make,
To judge whether two sample temperature values differ too big, if two sample temperature values are too big, when being more than preset reference threshold value, explanation
There are problems for sampling.Conversely, if whether two sample temperature values are not much different, illustrate that sampling is normal.
With reference to Fig. 2, it is based on above-mentioned temperature of powered cell Acquisition Circuit, the present invention also proposes a kind of temperature of powered cell acquisition
System, the temperature of powered cell acquisition system include master control, and 20 and multiple temperature of powered cell Acquisition Circuits as described above
10;The main controller 20 is separately connected with multiple temperature of powered cell Acquisition Circuits 10.
The power battery of usual electric vehicle has 20 to 40 temperature sensors, just needs to use multiple processors at this time
300 handle the temperature data of sampling, finally retransmit to main controller.
The present invention also proposes a kind of electric vehicle, which includes temperature of powered cell acquisition system, the power electric
The concrete structure of pond temperature acquisition system is with reference to above-described embodiment, since this electric vehicle uses the complete of above-mentioned all embodiments
Portion's technical solution, therefore at least all advantageous effects caused by the technical solution with above-described embodiment, herein no longer one by one
It repeats.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (10)
1. a kind of temperature of powered cell Acquisition Circuit, which is characterized in that the temperature of powered cell Acquisition Circuit include processor,
Controllable electric power, channel selection circuit and multiple temperature sampling circuits;
The temperature sampling circuit, for acquiring temperature of powered cell;
The controllable electric power, for powering for temperature sampling circuit;
The channel selection circuit, the temperature information for acquiring temperature sampling circuit are transmitted to processor;
The processor judges whether to need to acquire battery temperature according to demand for control, when battery temperature need not be acquired, control
The controllable electric power is made to stop powering to the temperature sampling circuit;When needing to acquire battery temperature, the controllable electric is controlled
Source powers to the temperature sampling circuit.
2. temperature of powered cell Acquisition Circuit as described in claim 1, which is characterized in that the processor, being additionally operable to pair can
Control electric power output voltage is sampled, and the output voltage is judged whether in predeterminated voltage section, if not in predeterminated voltage area
In, control controllable electric power adjusts output voltage;
The processor is additionally operable to judge whether the output voltage is more than predetermined voltage threshold, if being more than predetermined voltage threshold,
The processor sends out fault-signal.
3. temperature of powered cell Acquisition Circuit as claimed in claim 2, which is characterized in that the processor, being additionally operable to pair can
Power supply output pulse signal is controlled, controllable electric power detects that the processor stops sending pulse signal being more than preset time threshold
When, the controllable electric power sends reset signal to the processor, is resetted with controlling the processor.
4. temperature of powered cell Acquisition Circuit as described in claim 1, which is characterized in that the processor includes power supply control
End, the first collection terminal, the second collection terminal and path control terminal;The power control terminal of the processor and the controllable electric power by
End connection is controlled, the first collection terminal, the second collection terminal of the processor connect with the signal output end of the channel selection circuit
It connects, the path control terminal of the processor is connect with the selection end of the channel selection circuit;The channel selection circuit signal
The signal output of input terminal and the temperature sampling circuit connects, the power end of the temperature sampling circuit and the controllable electric power
Output end connection.
5. temperature of powered cell Acquisition Circuit as described in claim 1, which is characterized in that the processor selector channel selection
Signal transmission passage in circuit obtains the acquisition of corresponding temperature sample circuit by the first collection terminal and the second collection terminal respectively
Temperature information.
6. temperature of powered cell Acquisition Circuit as claimed in claim 5, which is characterized in that the processor is by the first collection terminal
The temperature value of acquisition is compared with the temperature value that the second collection terminal acquires, and judges whether sampling is reliable according to comparison result, when
When being judged as sampling reliable, the average value of the temperature value that temperature value and the second collection terminal of the acquisition of the first collection terminal are acquired as
Sample temperature.
7. temperature of powered cell Acquisition Circuit as claimed in claim 6, which is characterized in that when being judged as sampling unreliable,
The processor exports AD mapping fault signals.
8. temperature of powered cell Acquisition Circuit as claimed in claim 6, which is characterized in that the processor is by the first collection terminal
It is poor that the temperature value of the temperature value of acquisition and the second collection terminal make, and the absolute value for making poor difference is carried out with preset reference threshold value
Compare, when the absolute value is less than preset reference threshold value, the temperature value of the first collection terminal acquisition and the second collection terminal are acquired
Temperature value average value as sample temperature.
9. a kind of temperature of powered cell acquisition system, which is characterized in that the temperature of powered cell acquisition system includes main controller
And multiple temperature of powered cell Acquisition Circuits as claimed in any of claims 1 to 8 in one of claims;The main controller with it is multiple described
Temperature of powered cell Acquisition Circuit is separately connected.
10. a kind of electric vehicle, which is characterized in that the electric vehicle includes temperature of powered cell as claimed in claim 9
Acquisition system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521586.4A CN108688499A (en) | 2018-05-25 | 2018-05-25 | Temperature of powered cell Acquisition Circuit and system, electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521586.4A CN108688499A (en) | 2018-05-25 | 2018-05-25 | Temperature of powered cell Acquisition Circuit and system, electric vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN108688499A true CN108688499A (en) | 2018-10-23 |
Family
ID=63846936
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| CN201810521586.4A Pending CN108688499A (en) | 2018-05-25 | 2018-05-25 | Temperature of powered cell Acquisition Circuit and system, electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11287454B2 (en) | 2018-12-04 | 2022-03-29 | Contemporary Amperex Technology Co., Limited | Current sampling method and current sampling circuit |
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Application publication date: 20181023 |