CN105301502A - Vehicle-mounted storage battery charging and discharging measurement and analysis method - Google Patents

Abstract

The invention discloses a vehicle-mounted storage battery charging and discharging measurement and analysis method. The method comprises the steps: measuring an alternating current between a charging station and a vehicle-mounted storage battery; extracting a current component and a voltage component of the alternating current; measuring DC components, and fundamental wave and harmonic current and voltage components of a charging station power side and an electric car storage battery side; enabling each current component to be divided into an active current part and a reactive current part; and debugging the current component into an analog electric signal read by an A/D conversion circuit; Carrying out the measurement of the active current parts and the reactive current parts of the charging station power side and the electric car storage battery side; and measuring transient active components and transient reactive components, and measuring the mean transient active power and the mean transient reactive power, so as to measure the total power consumption.

Description

A kind of vehicle mounted accumulator cell charging and discharging is measured and analytical approach

Technical field

The embodiment of the present invention is about electric system AC/DC charging technique, is more specifically about a kind of method analyzed the charging quality of electrically-charging equipment and measure.

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 vehicle mounted accumulator cell charging and discharging and measures and analytical approach, to measure power consumption and the power quality of Vehicular accumulator cell, analyze other possible noise jamming (such as issuable harmonic wave and surge signal), 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.

Technical scheme: a kind of vehicle mounted accumulator cell charging and discharging is measured and analytical approach, and method comprises:

1) measuring exchanging (AC) electric current between charging station with Vehicular accumulator cell, extracting current component I wherein _dE, and AC voltage is measured, extract component of voltage V wherein _dE;

2) according to described current information component I _dE, information of voltage component V _dEthe DC component of charging station mains side, first-harmonic and harmonic current, component of voltage are measured, the DC component of Vehicular accumulator cell side, first-harmonic and harmonic current, component of voltage is measured simultaneously.By described current information component I _dEbe decomposed into active current part I _{dE_PART1}with reactive current components I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit;

3) according to described active current part I _{dE_PART1}with reactive current components I _{dE_PART2}, respectively to the active current I of the DC component of charging station mains side and battery pack side, first-harmonic and harmonic current, component of voltage _aTwith reactive current component I _iATmeasure;

4) according to described active current I _aTwith component of voltage V _dEmeasure transient state real power component P _iNST1, meet relational expression:

P _INST1＝V _DE·I _{DE_PART1}，

And according to described reactive current component I _iATwith component of voltage V _dEmeasure transient state reactive power component P _iNST2, meet relational expression:

P _INST2＝V _DE·I _{DE_PART2}，

5) according to transient state real power component P _iNST1measure average transient state active-power P _{iNST_AR1}, simultaneously according to transient state reactive power component P _iNST2measure average transient state reactive power P _{iNST_AR2}; And

6) according to described average transient state active-power P _{iNST_AR1}with average transient state reactive power P _{iNST_AR2}measure total power consumption P _t.

In one embodiment, comprise further:

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

2) according to described average transient state active-power P _{iNST_AR1}active energy transfer amount P is measured with drawn period of time T _tRS1, and according to average transient state reactive power P _{iNST_AR2}reactive energy transfer amount P is measured with drawn period of time T _tRS2;

3) measure each phase transient state real power component and transient state reactive power component in three-phase electric energy, and respectively according to this transient state real power component and transient state reactive power component calculate three-phase transient state forward meritorious/reactive power and three-phase transient state negative sense meritorious/reactive power; And

4) according to this three-phase transient state forward meritorious/reactive power and three-phase transient state negative sense meritorious/wattless power measurement goes out total electric energy transfer amount P _tRA.

Wherein in step 1) in, component of voltage V _dEmeet relational expression:

$\begin{array}{c}{V}_{DE}=V_0+\sqrt{2}{V}_{1}cos\left({\mathrm{\α}}_1\right)+\mathrm{\Σ}\sqrt{2}{V}_{2}cos\left({\mathrm{\α}}_2\right)+\mathrm{\Σ}\sqrt{2}{V}_{3}cos\left({\mathrm{\α}}_3\right)\\ =V_0+v_1+v_2+v_3\end{array}---\left(1\right)$

Current component I _dEmeet relational expression:

$\begin{array}{c}{I}_{DE}=I_0+\sqrt{2}{I}_{1}cos\left({\mathrm{\β}}_1\right)+\mathrm{\Σ}\sqrt{2}{I}_{2}cos\left({\mathrm{\β}}_2\right)+\mathrm{\Σ}\sqrt{2}{I}_{3}cos\left({\mathrm{\β}}_3\right)\\ =I_0+i_1+i_2+i_3\end{array}---\left(2\right)$

Wherein V ₀and I ₀be respectively component of voltage V _dEwith current component I _dEin DC component, V ₁, V ₂, V ₃and I ₁, 1 ₂, I ₃be respectively harmonic voltage component v ₁, v ₂, v ₃with harmonic current components i ₁, i ₂, i ₃root mean square; α, β are respectively component of voltage V _dEwith current component I _dEphasing degree.

Further in step 5) in, average transient state active-power P _{iNST_AR1}drawn by following relational expression:

$P_{INST\_AR1}=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\Σ}}{P}_{INST1,j}\right)---\left(3\right),$

Wherein W is the sample period, and N is collection period electrical energy discharge side being carried out to signals collecting; Similarly, average transient state reactive power P _{iNST_AR2}drawn by following relational expression:

$P_{INST\_AR2}=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\Σ}}{P}_{INST2,j}\right)---\left(4\right),$

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

$P_T=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\Σ}}{P}_{INST\_AR1}+\underset{j=(k-WN+1)}{\overset{k}{\Σ}}{P}_{INST\_AR2}\right)---\left(5\right).$

In one embodiment, in step 3) in be equivalent to Power Decomposition further, namely active power is made up of following component:

DC orthogonal harmonic wave real power component P _xfor:

$\begin{array}{c}{P}_X=\sqrt{2}{V}_0{I}_1\cos \left({\mathrm{\α}}_1\right){\mathrm{cos\θ}}_1+\sqrt{2}{V}_0\ΣI_2\cos \left({\mathrm{\α}}_2\right){\mathrm{cos\θ}}_2\\ +\sqrt{2}{V}_0\ΣI_3\cos \left({\mathrm{\α}}_3\right){\mathrm{cos\γ}}_3+\sqrt{2}{V}_1{I}_0\cos \left({\mathrm{\α}}_1\right)\\ +\sqrt{2}\underset{m=2.3}{\Σ}{V}_m{I}_0\cos \left({\mathrm{\α}}_m\right)\end{array}---\left(6\right)$

Wherein θ is the phasing degree between the first-harmonic of charging station mains side or harmonic voltage and first-harmonic or harmonic current, in one embodiment, and θ _m=α _m-β _m, m={1,2,3}, fundamental active power component is

p ₁＝2V ₁I ₁cos ²(α ₁)cosθ1(7)，

The harmonic wave real power component of charging station mains side is

p ₂＝2ΣV ₂I ₂cos ²(α ₂)cosθ ₂(8)，

The harmonic wave real power component of battery pack side is

p ₃＝2ΣV ₃I ₃cos ²(α ₃)cosγ ₃(9)，

The orthogonal first-harmonic real power component of charging station mains side is

p _X1＝2ΣV _mI ₁cos(α _m)cos(α ₁)cosθ ₁(10)，

The orthogonal harmonic wave real power component of battery pack side is

$p_{X_{23}}=2\underset{\stackrel{m\≠n}{\stackrel{m=1,2,3}{n=2,3}}}{\Σ}{V}_m{I}_{n}cos\left({\mathrm{\α}}_m\right)cos\left({\mathrm{\α}}_n\right){\mathrm{cos\θ}}_n---\left(11\right).$

Transient state real power component P _iNST1for the summation of relational expression (6) to (11).

Technique effect of the present invention is apparent, and the present invention is different from routine techniques only carries out electrical measurement mode to battery, and car-mounted terminal can accomplish instant analysis and measurement, and can show in real time on car-mounted terminal and control.Meanwhile, in view of vehicle-mounted charge behavior is uneven stable, accurate measurement can be accomplished by mode of the present invention, accurately to point out user charge condition, facilitate user to charge in time.

Embodiment

Vehicle mounted accumulator cell charging and discharging measure and analytical approach an embodiment in, measure exchanging (AC) electric current between charging station with Vehicular accumulator cell (Vehicular accumulator cell group), extraction current component I wherein _dE, and AC voltage is measured, extract component of voltage V wherein _dE.Between charging station and Vehicular accumulator cell, namely in charged side, AC electric current is measured, extract current information component I wherein _dE, such as, k interval is divided into alternating current curve, wherein each time domain Δ τ _ifor to extracted information about power component I _dEcomponent factor (0<i<k), the length of Δ τ may be the same or different, and by measuring AC voltage, extracts information of voltage component V wherein _dE.

According to described current information component I _dE, information of voltage component V _dEthe DC component of charging station mains side, first-harmonic and harmonic current, component of voltage are measured, the DC component of Vehicular accumulator cell side, first-harmonic and harmonic current, component of voltage is measured simultaneously.By described current information component I _dEbe decomposed into active current part I _{dE_PART1}with reactive current components I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit.Because electric quantity curve presents irregular status, this is mainly owing to voltage and current in grid charging process and non-fully is even, and consider the overvoltage or over-current phenomenon avoidance that may exist, and other charging modes, may cause in sampled AC signal and there is harmonic component, interference is caused to normal electrical measurement, therefore be charged or discharged in process at battery, electricity can present and suddenly increases or die-off, and 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, such as, at Δ τ to electric quantity curve _k-WN+1time domain interval 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.

According to described active current part I _{dE_PART1}with reactive current components I _{dE_PART2}, respectively to the active current I of the DC component of charging station mains side and Vehicular accumulator cell, first-harmonic and harmonic current, component of voltage _aTwith reactive current component I _iATmeasure.

Further, according to described active current I _aTwith component of voltage V _dEmeasure transient state real power component P _iNST1, meet relational expression:

P _INST1＝V _DE·I _{DE_PART1}，

And according to described reactive current component I _iATwith component of voltage V _dEmeasure transient state reactive power component P _iNST2, meet relational expression:

P _INST2＝V _DE·I _{DE_PART2}；

According to transient state real power component P _iNST1measure average transient state active-power P _{iNST_AR1}, simultaneously according to transient state reactive power component P _iNST2measure average transient state reactive power P _{iNST_AR2}; And according to described average transient state active-power P _{iNST_AR1}with average transient state reactive power P _{iNST_AR2}measure total power consumption P _t.

In one embodiment, comprise further:

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

2) according to described average transient state active-power P _{iNST_AR1}active energy transfer amount P is measured with drawn period of time T _tRS1, and according to average transient state reactive power P _{iNST_AR2}reactive energy transfer amount P is measured with drawn period of time T _tRS2;

3) measure each phase transient state real power component and transient state reactive power component in three-phase electric energy, and respectively according to this transient state real power component and transient state reactive power component calculate three-phase transient state forward meritorious/reactive power and three-phase transient state negative sense meritorious/reactive power; And

4) according to this three-phase transient state forward meritorious/reactive power and three-phase transient state negative sense meritorious/wattless power measurement goes out total electric energy transfer amount P _tRA.

Wherein in step 1) in, component of voltage V _dEmeet relational expression:

$\begin{array}{c}{V}_{DE}=V_0+\sqrt{2}{V}_{1}cos\left({\mathrm{\&alpha;}}_1\right)+\mathrm{\&Sigma;}\sqrt{2}{V}_{2}cos\left({\mathrm{\&alpha;}}_2\right)+\mathrm{\&Sigma;}\sqrt{2}{V}_{3}cos\left({\mathrm{\&alpha;}}_3\right)\\ =V_0+v_1+v_2+v_3\end{array}---\left(1\right)$

Current component I _dEmeet relational expression:

$\begin{array}{c}{I}_{DE}=I_0+\sqrt{2}{I}_{1}cos\left({\mathrm{\&beta;}}_1\right)+\mathrm{\&Sigma;}\sqrt{2}{I}_{2}cos\left({\mathrm{\&beta;}}_2\right)+\mathrm{\&Sigma;}\sqrt{2}{I}_{3}cos\left({\mathrm{\&beta;}}_3\right)\\ =I_0+i_1+i_2+i_3\end{array}---\left(2\right)$

Wherein V ₀and I ₀be respectively component of voltage V _dEwith current component I _dEin DC component, V ₁, V ₂, V ₃and I ₁, 1 ₂, I ₃be respectively harmonic voltage component v ₁, v ₂, v ₃with harmonic current components i ₁, i ₂, i ₃root mean square; α, β are respectively component of voltage V _dEwith current component I _dEphasing degree.

Further in step 5) in, average transient state active-power P _{iNST_AR1}drawn by following relational expression:

$P_{INST\_AR1}=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST1,j}\right)---\left(3\right),$

Wherein W is the sample period, and N is collection period electrical energy discharge side being carried out to signals collecting, and the value of W and N can be set by cart-mounted computing device, such as, for one-period, and W=1, certainly, the value of W is larger, then illustrate that sampling result is more accurate; Similarly, average transient state reactive power P _{iNST_AR2}drawn by following relational expression:

$P_{INST\_AR2}=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST2,j}\right)---\left(4\right),$

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

$P_T=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST\_AR1}+\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST\_AR2}\right)---\left(5\right).$

In one embodiment, in step 3) in be equivalent to Power Decomposition further, namely active power is made up of following component:

DC orthogonal harmonic wave real power component P _xfor:

$\begin{array}{c}{P}_X=\sqrt{2}{V}_0{I}_1\cos \left({\mathrm{\&alpha;}}_1\right){\mathrm{cos\&theta;}}_1+\sqrt{2}{V}_0\&Sigma;I_2\cos \left({\mathrm{\&alpha;}}_2\right){\mathrm{cos\&theta;}}_2\\ +\sqrt{2}{V}_0\&Sigma;I_3\cos \left({\mathrm{\&alpha;}}_3\right){\mathrm{cos\&gamma;}}_3+\sqrt{2}{V}_1{I}_0\cos \left({\mathrm{\&alpha;}}_1\right)\\ +\sqrt{2}\underset{m=2.3}{\&Sigma;}{V}_m{I}_0\cos \left({\mathrm{\&alpha;}}_m\right)\end{array}---\left(6\right)$

Wherein θ is the phasing degree between the first-harmonic of charging station mains side or harmonic voltage and first-harmonic or harmonic current, in one embodiment, and θ _m=α _m-β _m, m={1,2,3}, fundamental active power component is

p ₁＝2V ₁I ₁ocs ²(α ₁)cosθ ₁(7)，

The harmonic wave real power component of charging station mains side is

p ₂＝2ΣV ₂I ₂cps ²(α ₂)cosθ ₂(8)，

The harmonic wave real power component of battery pack side is

p ₃＝2ΣV ₃I ₃cos(α ₃)cosγ ₃(9)，

The orthogonal first-harmonic real power component of charging station mains side is

p _X1＝2ΣV _mI ₁cos(α _m)cos(α ₁)cosθ ₁(10)，

The orthogonal harmonic wave real power component of battery pack side is

$p_{X_{23}}=2\underset{\stackrel{m\&NotEqual;n}{\stackrel{m=1,2,3}{n=2,3}}}{\&Sigma;}{V}_m{I}_{n}cos\left({\mathrm{\&alpha;}}_m\right)cos\left({\mathrm{\&alpha;}}_n\right){\mathrm{cos\&theta;}}_n---\left(11\right).$

Transient state real power component P _iNST1for the summation of relational expression (6) to (11).

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:

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

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:

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

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

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

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 (electric automobile) 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 with H point for 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.

Claims (5)

1. vehicle mounted accumulator cell charging and discharging is measured and an analytical approach, it is characterized in that comprising:

1) between charging station and Vehicular accumulator cell, alternating current is measured, extract current component I wherein _dE, and AC voltage is measured, extract component of voltage V wherein _dE;

2) according to described current component I _dE, component of voltage V _dEthe DC component of charging station mains side, first-harmonic and harmonic current, component of voltage are measured, the DC component of Vehicular accumulator cell side, first-harmonic and harmonic current, component of voltage is measured simultaneously;

3) by described current component I _dEbe decomposed into active current part I _{dE_PART1}with reactive current components I _{dE_PART2}, and debugged the analog electrical signal into reading for A/D change-over circuit;

4) according to described active current part I _{dE_PART1}with reactive current components I _{dE_PART2}, respectively to the active current I of the DC component of charging station mains side and Vehicular accumulator cell side, first-harmonic and harmonic current, component of voltage _aTwith reactive current component I _iATmeasure;

5) according to described active current I _aTwith component of voltage V _dEmeasure transient state real power component P _iNST1, and according to described reactive current component I _iATwith component of voltage V _dEmeasure transient state reactive power component P _iNST2;

6) according to transient state real power component P _iNST1measure average transient state active-power P _{iNST_AR1}, simultaneously according to transient state reactive power component P _iNST2measure average transient state reactive power P _{iNST_AR2}; And

7) according to described average transient state active-power P _{iNST_AR1}with average transient state reactive power P _{iNST_AR2}measure total power consumption P _t.

2. vehicle mounted accumulator cell charging and discharging according to claim 1 is measured and analytical approach, it is characterized in that comprising further:

1) period of time T of step described in claim 1 is calculated by clock unit;

2) according to described average transient state active-power P _{iNST_AR1}active energy transfer amount P is measured with drawn period of time T _tRS1, and according to average transient state reactive power P _{iNST_AR2}reactive energy transfer amount P is measured with drawn period of time T _tRS2;

3) measure each phase transient state real power component and transient state reactive power component in three-phase electric energy, and respectively according to this transient state real power component and transient state reactive power component calculate three-phase transient state forward meritorious/reactive power and three-phase transient state negative sense meritorious/reactive power; And

4) according to this three-phase transient state forward meritorious/reactive power and three-phase transient state negative sense meritorious/wattless power measurement goes out total electric energy transfer amount P _tRA.

3. vehicle mounted accumulator cell charging and discharging according to claim 1 is measured and analytical approach, it is characterized in that in step 1) in, component of voltage V _dEmeet relational expression:

$\begin{array}{c}{V}_{DE}=V_0+\sqrt{2}{V}_{1}cos\left({\mathrm{\&alpha;}}_1\right)+\mathrm{\&Sigma;}\sqrt{2}{V}_{2}cos\left({\mathrm{\&alpha;}}_2\right)+\mathrm{\&Sigma;}\sqrt{2}{V}_{3}cos\left({\mathrm{\&alpha;}}_3\right)\\ =V_0+v_1+v_2+v_3\end{array}---\left(1\right)$

And current component I _dEmeet relational expression:

$\begin{array}{c}{I}_{DE}=I_0+\sqrt{2}{I}_{1}cos\left({\mathrm{\&beta;}}_1\right)+\mathrm{\&Sigma;}\sqrt{2}{I}_{2}cos\left({\mathrm{\&beta;}}_2\right)+\mathrm{\&Sigma;}\sqrt{2}{I}_{3}cos\left({\mathrm{\&beta;}}_3\right)\\ =I_0+i_1+i_2+i_3\end{array}---\left(2\right)$

Wherein V ₀and I ₀be respectively component of voltage V _dEwith current component I _dEin DC component, V ₁, V ₂, V ₃and I ₁, 1 ₂, I ₃be respectively harmonic voltage component v ₁, v ₂, v ₃with harmonic current components i ₁, i ₂, i ₃root mean square; α, β are respectively component of voltage V _dEwith current component I _dEphasing degree.

4. vehicle mounted accumulator cell charging and discharging according to claim 1 is measured and analytical approach, it is characterized in that in step 5) in, average transient state active-power P _{iNST_AR1}drawn by following relational expression:

$P_{INST\_AR1}=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST1,j}\right)---\left(3\right),$

Wherein W is the sample period, and N is collection period electrical energy discharge side being carried out to signals collecting; Similarly, average transient state reactive power P _{iNST_AR2}drawn by following relational expression:

$P_{INST\_AR2}=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST2,j}\right)---\left(4\right),$

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

$P_T=\frac{1}{WN}\left(\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST\_AR1}+\underset{j=(k-WN+1)}{\overset{k}{\&Sigma;}}{P}_{INST\_AR2}\right)---\left(5\right).$

5. vehicle mounted accumulator cell charging and discharging according to claim 1 is measured and analytical approach, it is characterized in that in step 3) middle transient state real power component P _iNST1be made up of following component:

DC orthogonal harmonic wave real power component P _xfor:

$\begin{array}{c}{P}_X=\sqrt{2}{V}_0{I}_1\cos \left({\mathrm{\&alpha;}}_1\right){\mathrm{cos\&theta;}}_1+\sqrt{2}{V}_0\&Sigma;I_2\cos \left({\mathrm{\&alpha;}}_2\right){\mathrm{cos\&theta;}}_2\\ +\sqrt{2}{V}_0\&Sigma;I_3\cos \left({\mathrm{\&alpha;}}_3\right){\mathrm{cos\&gamma;}}_3+\sqrt{2}{V}_1{I}_0\cos \left({\mathrm{\&alpha;}}_1\right)\\ +\sqrt{2}\underset{m=2.3}{\&Sigma;}{V}_m{I}_0\cos \left({\mathrm{\&alpha;}}_m\right)\end{array}---\left(6\right)$

Wherein θ is the phasing degree between the first-harmonic of charging station mains side or harmonic voltage and first-harmonic or harmonic current, in one embodiment, and θ _m=α _m-β _m, m={1,2,3}, fundamental active power component is

p ₁＝2V ₁I ₁cos ²(α ₁)cosθ ₁(7)，

The harmonic wave real power component of charging station mains side is

p ₂＝2ΣV ₂I ₂cos ²(α ₂)cosθ ₂(8)，

The harmonic wave real power component of battery pack side is

p ₃＝2ΣV ₃I ₃cos ²(α ₃)cosγ ₃(9)，

The orthogonal first-harmonic real power component of charging station mains side is

p _X1＝2ΣV _mI ₁cos(α _m)cos(α ₁)cosθ ₁(10)，

The orthogonal harmonic wave real power component of battery pack side is

$p_{X_{23}}=2\underset{\stackrel{m\&NotEqual;n}{\stackrel{m=1,2,3}{n=2,3}}}{\&Sigma;}{V}_m{I}_{n}cos\left({\mathrm{\&alpha;}}_m\right)cos\left({\mathrm{\&alpha;}}_n\right){\mathrm{cos\&theta;}}_n---\left(11\right).$