CN105158695A - Measurement and analysis method and analysis device for power utilization information of vehicle storage battery - Google Patents

Abstract

The invention discloses a measurement and analysis method for power utilization information of a vehicle storage battery. The method comprises that the DC and DC voltage at the electric energy discharging side of the vehicle storage battery are measured to extract a current information component and a voltage information component from the DC and DC voltage, the first current information component is decomposed into a first current information part and a second current information part by a filter and gain unit, and the first current information part and the second current information part are measured; first transient power consumption, second transient power consumption and average power consumption components are obtained via measurement; and average total power consumption is measured according to the first and second average power consumption components; a clock unit calculates a time period T of the above steps; a first electric energy transfer amount and a second electric energy transfer amount are measured, and an average total electric energy transfer amount is calculated; and the average total power consumption is compared with the average total electric energy transfer amount to obtain data of power utilization quality. The invention also relates to an analysis device for the power utilization information of the vehicle storage battery.

Description

A kind of measurement of Vehicular accumulator cell power information and analytical approach and analytical equipment

Technical field

The embodiment of the present invention is about electric system AC/DC charging technique, is more specifically about a kind of method of being carried out user power utilization behavioural analysis and measurement by vehicle-mounted mode.

Background technology

Vehicular accumulator cell is as a kind of portable power source, and after it provides power supply to drive interchange AC, direct current DC electro-motor carrys out supply vehicle driving dynamics, needs to carry out charge in batteries after its power consumption.Prior art demands perfection urgently to the discharge and recharge measurement of Vehicular accumulator cell and analytical technology.

Summary of the invention

Technical matters to be solved by this invention is just to provide a kind of measurement and analytical approach of Vehicular accumulator cell power information, direct current (DC) power consumption and the power quality of Vehicular accumulator cell is measured in vehicle-mounted mode, safeguard the use ability of Vehicular accumulator cell better, vehicle usage behavior is made and analyzes accurately, grasp trip and the drive manner of vehicle-mounted user.

For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of measurement of Vehicular accumulator cell power information and analytical approach, comprising:

1) the DC electric current of the electrical energy discharge side of Vehicular accumulator cell is measured, extract current information component I wherein _dE, and DC voltage is measured, extract information of voltage component V wherein _dE;

2) by described current information component I _dEthe first current information part I is decomposed into by filtering and gain unit _{dE_PART1}with the second current information part I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit;

3) described first current information part I is measured _{dE_PART1}with the second current information part I _{dE_PART2};

4) according to described first current information part I _{dE_PART1}with information of voltage component V _dEmeasure the first transient state power consumption P _iNST1, and according to described second current information part I _{dE_PART2}with information of voltage component V _dEmeasure the second transient state power consumption P _iNST2;

5) according to the first transient state power consumption P _iNST1measure the first average consumption component P _{iNST_PART1}, and according to the second transient state power consumption P _iNST2measure the second average consumption component P _{iNST_PART2};

6) according to the first described average consumption component P _{iNST_PART1}with the second average consumption component P _{iNST_PART2}measure average total power consumption P _t;

7) period of time T of abovementioned steps is calculated by clock unit;

8) according to the first described average consumption component P _{iNST_PART1}the first electric energy transfer amount P is measured with drawn period of time T _tRS1, and according to the second average consumption component P _{iNST_PART2}t second electric energy transfer amount P is measured with the drawn time cycle _tRS2;

9) according to the first electric energy transfer amount P _tRS1with the second electric energy transfer amount P _tRS2calculate the total transfer amount P of average power _tR; And

10) by average total power consumption P _ttransfer amount P total with average power _tRcompare to draw power quality data.

Further, in step 2) in, current information component I _dEmeet relational expression: I _dE=I _{dE_PART1}± I _{dE_PART2}.

Further, in step 5) in, the first average consumption component P _{iNST_PART1}drawn by following relational expression:

$P_{INST\_PART1}=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\Σ}}}{P}_{INST1,j}\right),$

Wherein W is the sample period, and N is collection period electrical energy discharge side being carried out to signals collecting; Similarly, drawn by following relational expression:

$P_{INST\_PART2}=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\Σ}}}{P}_{INST2,j}\right),$

And then in step 6) in, average total power consumption P _tmeet relational expression:

$P_T=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\Σ}}}{P}_{INST\_PART1}+\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\Σ}}}{P}_{INST\_PART2}\right).$

Further, in step 8) in, the first electric energy transfer amount P _tRS1meet relational expression:

$P_{TRS1}=\frac{\mathrm{\Δ}\mathrm{\τ}}{T}2{\mathrm{n\πP}}_{INST\_PART1},$

Wherein Δ τ is for extracted information about power component I _dEcomponent factor; Similarly, the first electric energy transfer amount P _tRS1meet relational expression:

$P_{TRS2}=\frac{\mathrm{\Δ}\mathrm{\τ}}{T}2{\mathrm{n\πP}}_{INST\_PART2}.$

In another embodiment, design a kind of analytical equipment of Vehicular accumulator cell power information, its output terminal electric coupling vehicle mobile equipment is to export power information data, and equipment comprises:

Discharge side power taking end, measures the DC electric current of Vehicular accumulator cell, extracts current information component I wherein _dE, and DC voltage is measured, extract information of voltage component V wherein _dE;

Filtering and gain unit, the discharge side power taking end described in connection, by described current information component I _dEbe decomposed into the first current information part I _{dE_PART1}with the second current information part I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit;

A/D change-over circuit, the filtering described in connection and gain unit, for being converted to digital signal by analog electrical signal;

Single-chip microcomputer, receives described digital signal, for measuring described first current information part I _{dE_PART1}with the second current information part I _{dE_PART2}; According to described first current information part I _{dE_PART1}with information of voltage component V _dEmeasure the first transient state power consumption P _iNST1, and according to described second current information part I _{dE_PART2}with information of voltage component V _dEmeasure the second transient state power consumption P _iNST2; According to the first transient state power consumption P _iNST1measure the first average consumption component P _{iNST_PART1}, and according to the second transient state power consumption P _iNST2measure the second average consumption component P _{iNST_PART2}; According to the first described average consumption component P _{iNST_PART1}with the second average consumption component P _{iNST_PART2}measure average total power consumption P _t; And

Clock unit, connects described single-chip microcomputer, calculates single-chip microcomputer carries out signals collecting collection period and sample of signal cycle to electrical energy discharge side.

In one embodiment, described single-chip microcomputer connects vehicle mobile equipment further, to draw power quality data and to point out in the user interface of vehicle mobile equipment.

Technique effect of the present invention is apparent, the present invention is different from routine techniques only carries out electrical measurement mode to battery charged side, car-mounted terminal is attached with the measuring equipment of battery pack, instant analysis and measurement can be accomplished, and can show in real time on car-mounted terminal and control.Meanwhile, be uneven stable in view of vehicle-mounted electrical travelling, accurate measurement can be accomplished by mode of the present invention, accurately to point out vehicle-mounted user's charge condition, facilitate user to charge in time or implement roadside assistance request.

Accompanying drawing explanation

Fig. 1 schematically shows the electric quantity curve figure that the present invention measures battery pack;

Fig. 2 is the primary structure theory diagram of present device.

Embodiment

See figures.1.and.2, in order to measurement and the analytical approach of further shows in detail Vehicular accumulator cell of the present invention (or Vehicular accumulator cell group) power information, provide an electric quantity curve figure about Vehicular accumulator cell, wherein:

1) the DC electric current of the electrical energy discharge side of Vehicular accumulator cell is measured, extract current information component I wherein _dE, k interval is divided into electric quantity curve, wherein illustrated Δ τ _ifor to extracted information about power component I _dEcomponent factor (0<i<k), Δ τ can separate according to time domain, and the length of Δ τ may be the same or different, and by measuring DC voltage, extracts information of voltage component V wherein _dE;

2) as shown in Figure 1, because electric quantity curve presents irregular status, this is mainly owing to the travel speed in the process travelled at vehicle (electric automobile) and non-fully is on average accelerated or at the uniform velocity, therefore in the process of unexpected acceleration or deceleration, electricity can present and suddenly increases or die-off, and therefore can not adopt conventional metering method.General technology directly measures and charging the electric energy be filled with in the process of charging to battery, but such method is very loaded down with trivial details and error is larger.In one embodiment of the invention, unlimited approximate processing is carried out to electric quantity curve, at illustrated Δ τ _k-WN+1time domain in, by the point of crossing place of described temporal interval and current curve, by current information component I _dEbe decomposed into the first current information part I _{dE_PART1}with the second current information part I _{dE_PART2}, drawn the current information component in this interval by the algebraic sum of two current signals, and this component is debugged the analog electrical signal for reading for A/D change-over circuit after filtering with current gain;

In FIG, wherein W is the sample period of sample of signal, and N is collection period electrical energy discharge side being carried out to signals collecting, the value of W and N can be set by cart-mounted computing device, such as, for illustrated one-period, and W=1, certainly, the value of W is larger, then illustrate that sampling result is more accurate;

3) described first current information part I is measured _{dE_PART1}with the second current information part I _{dE_PART2};

4) according to described first current information part I _{dE_PART1}with information of voltage component V _dEmeasure the first transient state power consumption P _iNST1, namely meet relational expression: P _iNST1=I _{dE_PART1}v _dE.And according to described second current information part I _{dE_PART2}with information of voltage component V _dEmeasure the second transient state power consumption P _iNST2, namely meet relational expression: P _iNST2=I _{dE_PART2}v _dE;

5) according to the first transient state power consumption P _iNST1measure the first average consumption component P _{iNST_PART1}, and according to the second transient state power consumption P _iNST2measure the second average consumption component P _{iNST_PART2};

6) according to the first described average consumption component P _{iNST_PART1}with the second average consumption component P _{iNST_PART2}measure average total power consumption P _t;

7) period of time T of abovementioned steps is calculated by clock unit ₁, such as shown in Fig. 1 at T ₁after, Vehicle Speed levels off at the uniform velocity, then can as a sample cycle before node M;

8) according to the first described average consumption component P _{iNST_PART1}the first electric energy transfer amount P is measured with drawn period of time T _tRS1, and according to the second average consumption component P _{iNST_PART2}t second electric energy transfer amount P is measured with the drawn time cycle _tRS2;

9) according to the first electric energy transfer amount P _tRS1with the second electric energy transfer amount P _tRS2calculate the total transfer amount P of average power _tR; And

10) by average total power consumption P _ttransfer amount P total with average power _tRcompare to draw power quality data.

Further, in step 2) in, current information component I _dEmeet relational expression: I _dE=I _{dE_PART1}± I _{dE_PART2}.

Further, in step 5) in, the first average consumption component P _{iNST_PART1}drawn by following relational expression:

$P_{INST\_PART1}=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST1,j}\right),---\left(1\right)$

Wherein W is the sample period, and N is collection period electrical energy discharge side being carried out to signals collecting; Similarly, drawn by following relational expression:

$P_{INST\_PART2}=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST2,j}\right),---\left(2\right)$

And then in step 6) in, average total power consumption P _tmeet relational expression:

$P_T=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST\_PART1}+\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST\_PART2}\right)---\left(3\right).$

Further, in step 8) in, the first electric energy transfer amount P _tRS1meet relational expression:

$P_{TRS1}=\frac{\mathrm{\&Delta;}\mathrm{\&tau;}}{T}2{\mathrm{n\&pi;P}}_{INST\_PART1},$

Wherein Δ τ is for extracted information about power component I _dEcomponent factor; Setting coefficient n=k, similarly, the first electric energy transfer amount P _tRS1meet relational expression:

$P_{TRS2}=\frac{\mathrm{\&Delta;}\mathrm{\&tau;}}{T}2{\mathrm{n\&pi;P}}_{INST\_PART2}.$

In another embodiment, consider in sampled signal situation, vehicle is in the situation of slowing down gradually or slowing down gradually, designs another kind of measuring method in this case, includes:

In step 4) basis on, in the first signal sampling period, measure maximum current information component I wherein _dEwith minimum current information component I _dE, such as in the figure shown in Fig. 1, H point is minimum current component point, from 0 to H point as the first signal sampling period;

Using H point to K point as the secondary signal sampling period, within this secondary signal sampling period, only measure and be wherein greater than maximum current information component I _dEor be less than minimum current information component I _dEcurrent information component;

Similarly, in the 3rd signal sampling period that time domain forms between K point to M point, measure and be wherein greater than maximum current information component I _dEor be less than minimum current information component I _dEcurrent information component, without the need to measuring the component of other time domains;

Wherein the time in sampling period is equal.

With reference to Fig. 2, in another embodiment, design a kind of analytical equipment of Vehicular accumulator cell power information, its output terminal electric coupling vehicle mobile equipment is to export power information data, and equipment comprises:

Be arranged on the discharge side power taking end 2 between Vehicular accumulator cell 1 and vehicle load 3, the DC electric current of Vehicular accumulator cell 1 is measured, extract current information component I wherein _dE, and DC voltage is measured, extract information of voltage component V wherein _dE;

Filtering and gain unit 4, the discharge side power taking end 2 described in connection, by described current information component I _dEbe decomposed into the first current information part I _{dE_PART1}with the second current information part I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit;

A/D change-over circuit 5, the filtering described in connection and gain unit, for being converted to digital signal by analog electrical signal;

Single-chip microcomputer 6, receives described digital signal, for measuring described first current information part I _{dE_PART1}with the second current information part I _{dE_PART2}; According to described first current information part I _{dE_PART1}with information of voltage component V _dEmeasure the first transient state power consumption P _iNST1, and according to described second current information part I _{dE_PART2}with information of voltage component V _dEmeasure the second transient state power consumption P _iNST2; According to the first transient state power consumption P _iNST1measure the first average consumption component P _{iNST_PART1}, and according to the second transient state power consumption P _iNST2measure the second average consumption component P _{iNST_PART2}; According to the first described average consumption component P _{iNST_PART1}with the second average consumption component

P _{iNST_PART2}measure average total power consumption P _t; And

Clock unit 7, connects described single-chip microcomputer 6, calculates single-chip microcomputer carries out signals collecting collection period and sample of signal cycle to electrical energy discharge side.

In one embodiment, described single-chip microcomputer 6 connects vehicle mobile equipment further, to draw power quality data and to point out in the user interface of vehicle mobile equipment.

Claims (6)

1. the measurement of Vehicular accumulator cell power information and an analytical approach, is characterized in that comprising:

1) the DC electric current of the electrical energy discharge side of Vehicular accumulator cell is measured, extract current information component I wherein _dE, and DC voltage is measured, extract information of voltage component V wherein _dE;

2) by described current information component I _dEthe first current information part I is decomposed into by filtering and gain unit _{dE_PART1}with the second current information part I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit;

3) described first current information part I is measured _{dE_PART1}with the second current information part I _{dE_PART2};

4) according to described first current information part I _{dE_PART1}with information of voltage component V _dEmeasure the first transient state power consumption P _iNST1, and according to described second current information part I _{dE_PART2}with information of voltage component V _dEmeasure the second transient state power consumption P _iNST2;

5) according to the first transient state power consumption P _iNST1measure the first average consumption component P _{iNST_PART1}, and according to the second transient state power consumption P _iNST2measure the second average consumption component P _{iNST_PART2};

6) according to the first described average consumption component P _{iNST_PART1}with the second average consumption component P _{iNST_PART2}measure average total power consumption P _t;

7) period of time T of abovementioned steps is calculated by clock unit;

8) according to the first described average consumption component P _{iNST_PART1}the first electric energy transfer amount P is measured with drawn period of time T _tRS1, and according to the second average consumption component P _{iNST_PART2}t second electric energy transfer amount P is measured with the drawn time cycle _tRS2;

9) according to the first electric energy transfer amount P _tRS1with the second electric energy transfer amount P _tRS2calculate the total transfer amount P of average power _tR; And

10) by average total power consumption P _ttransfer amount P total with average power _tRcompare to draw power quality data.

2. the measurement of Vehicular accumulator cell power information according to claim 1 and analytical approach, is characterized in that in step 2) in, current information component I _dEmeet relational expression: I _dE=I _{dE_PART1}± I _{dE_PART2}.

3. the measurement of Vehicular accumulator cell power information according to claim 1 and analytical approach, is characterized in that in step 5) in, the first average consumption component P _{iNST_PART1}drawn by following relational expression:

$P_{INST\_PART1}=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST1,j}\right),$

Wherein W is the sample period, and N is collection period electrical energy discharge side being carried out to signals collecting; Similarly, drawn by following relational expression:

$P_{INST\_PART2}=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST2,j}\right),$

And then in step 6) in, average total power consumption P _tmeet relational expression:

$P_T=\frac{1}{WN}\left(\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST\_PART1}+\underset{j=\left(k-WN+1\right)}{\overset{k}{\mathrm{\&Sigma;}}}{P}_{INST\_PART2}\right).$

4. the measurement of Vehicular accumulator cell power information according to claim 1 and analytical approach, is characterized in that in step 8) in, the first electric energy transfer amount P _tRS1meet relational expression:

$P_{TRS1}=\frac{\mathrm{\&Delta;}\mathrm{\&tau;}}{T}2{\mathrm{n\&pi;P}}_{INST\_PART1},$

Wherein Δ τ is for extracted information about power component I _dEcomponent factor; Similarly, the first electric energy transfer amount P _tRS1meet relational expression:

$P_{TRS2}=\frac{\mathrm{\&Delta;}\mathrm{\&tau;}}{T}2{\mathrm{n\&pi;P}}_{INST\_PART2}.$

5. an analytical equipment for Vehicular accumulator cell power information, its output terminal electric coupling vehicle mobile equipment, to export power information data, is characterized in that comprising:

Discharge side power taking end, measures the DC electric current of Vehicular accumulator cell, extracts current information component I wherein _dE, and DC voltage is measured, extract information of voltage component V wherein _dE;

Filtering and gain unit, the discharge side power taking end described in connection, by described current information component I _dEbe decomposed into the first current information part I _{dE_PART1}with the second current information part I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit;

A/D change-over circuit, the filtering described in connection and gain unit, for being converted to digital signal by analog electrical signal;

Single-chip microcomputer, receives described digital signal, for measuring described first current information part I _{dE_PART1}with the second current information part I _{dE_PART2}; According to described first current information part I _{dE_PART1}with information of voltage component V _dEmeasure the first transient state power consumption P _iNST1, and according to described second current information part I _{dE_PART2}with information of voltage component V _dEmeasure the second transient state power consumption P _iNST2; According to the first transient state power consumption P _iNST1measure the first average consumption component P _{iNST_PART1}, and according to the second transient state power consumption P _iNST2measure the second average consumption component P _{iNST_PART2}; According to the first described average consumption component P _{iNST_PART1}with the second average consumption component P _{iNST_PART2}measure average total power consumption P _t; And

Clock unit, connects described single-chip microcomputer, calculates single-chip microcomputer carries out signals collecting collection period and sample of signal cycle to electrical energy discharge side.

6. the analytical equipment of Vehicular accumulator cell power information according to claim 5, it is characterized in that: the vehicle mobile equipment of the further connecting electric automobile of described single-chip microcomputer, to draw power quality data and to point out in the user interface of vehicle mobile equipment.