TWI400453B - Battery power display method for fluctuating consumption system and apparatus of the same - Google Patents

Description

Battery power display method and device thereof for wave power consumption system

The invention relates to a battery power display method and device thereof for a wave power consumption system, in particular to a device and method for displaying a power consumption state and a residual power state of a wave power consumption system capable of displaying power by a battery .

The power of the battery is shown in the battery-powered system. It has a very important function. The main reason is that the battery is limited in power. The user should monitor the system's power consumption and battery residual power at any time. Whether it is sufficient and pre-emptive; among them, battery residual power is often expressed in terms of battery state of charge (SOC).

In the prior art, many different measurement techniques and displays are disclosed; for example, Taiwan Patent No. I259907 and Taiwan Patent Publication No. 201003083, which disclose measuring the voltage and loop current of a battery, converting it into electric power, and pre-existing The remaining power is generated and displayed to the user; as shown in the U.S. Patent No. 5,629,605 and U.S. Patent No. 4,825,170, the disclosure of which is incorporated herein by reference. However, the technique of displaying the battery power by digital or LED light can only be used in a system that is substantially stable in power consumption, mainly because the system that stabilizes power consumption has a small instantaneous rise (instantaneous fluctuation), and is not displayed by digital or LED light. It will produce too fast changes, making it impossible for users to interpret.

In order to reduce the number of LED display lights, for example, Taiwan Patent No. I322274 discloses a method and apparatus for indicating the state of the battery power, as shown in Fig. 1, which is connected to the battery 92 by the battery monitor 94, and after sensing the voltage of the battery 92, The controller 91 is instructed to generate an indication signal, and the pulse width modulator 93 issues a different pulse width modulation signal (PWM) to drive the LED lamp 95 to display the amount of power of the battery 92 at different brightnesses and frequencies. For example, when the battery 92 is close to the full power (80% to 100%), it flashes once at the highest brightness and every period T; when the battery 92 has a power of 60% to 80%, it flashes with the second highest brightness and each period T Second time; when the battery 92 is reduced in charge to 0 to 20%, it is displayed five times with the weakest brightness and each period T. This method uses different brightness and different frequency flicker to make the observer's human eye characteristics to intuitively feel whether the battery 92 is fully charged or is about to be exhausted; when applied to a fixed output load, the observer can be quite convenient. However, for a power consuming system with unstable output power, the high and low voltage changes of the voltage output of the battery 92 will cause a rapid change in the brightness of the LED lamp 95 and the blinking frequency, and it is difficult for the observer to determine the power of the battery 92.

Due to the fluctuating power consumption system, the voltage and loop current of the battery vary quite rapidly, and the conventional display method and device cannot be used in the fluctuating power consumption system; therefore, in order to overcome the difficulties of the prior art, development can be used for the fluctuating power consumption system. The power display has its urgent need.

In view of the above problems of the prior art, one of the main objects of the present invention is to provide a battery power display method for a wave power consuming system, which is applied to a power system that supplies power to a load using a battery, and supplies a battery-powered voltage, The current or electric power is displayed as a pointer to the analog signal, and includes the following steps:

S1: measuring the instantaneous voltage V(k) of the battery power supply circuit by using the voltage sensing circuit topology digital sampling; measuring the instantaneous current I(k) of the battery and the load power supply circuit by using the current voltage sensing circuit topology digital sampling; The instantaneous voltage V(k) and the instantaneous current I(k) measured by the voltage sensing circuit topology and the current voltage sensing circuit topology are digital signals;

S2: calculating the instantaneous electric power P(k) by the instantaneous voltage V(k) and the instantaneous current I(k), and composing the electric quantity vector Ψ(k); wherein

P(k)=V(k)×I(k) (1)

Ψ(k)=[V(k) I( k ) P( k )] ^T (2)

k is the kth digital sample;

S3: converting the power vector Ψ(k) into a power observation vector Ψ(t) of the analog signal, where t is an instantaneous time;

Ψ(t)=[V(t) I( t ) P( t )] ^T (3)

S4: displaying the electricity observation vector Ψ(t) in a pointer form;

S5: Return to S1, k=k+1.

Since the power consumption of the load end of the fluctuating power consumption system changes very rapidly, for example, the robot system, the servo motor of the robot may start or stop at any time, the power consumption situation changes at any time, the power display fluctuates greatly, and the user is difficult to observe; In order to overcome this problem, another main object of the present invention is to provide a battery power display method for a wave power consumption system, as in the foregoing steps S1 to S4, wherein S2 and S3 can increase a proportional integral calculation:

S2': Calculate the instantaneous electric power P(k) by the instantaneous voltage V(k) and the instantaneous current I(k), and form the electric quantity vector Ψ(k); the electric quantity vector Ψ(k) is calculated by proportional integral (PI) Power vector Ψ _u (k);

Ψ _u (k)=[V _u (k) I _u ( k ) P _u ( k )] ^T =[ K _IV Σ( r _v ( k )- K _pV V ( k )) K _II Σ( r _I ( k )- K _pI I ( k )) K _IP Σ( r _p ( k )- K _pp P ( k ))] ^T (4)

Where K _IV , K _II , and K _IP are integral constants; K _PV , K _PI , and K _PP are proportional constants; r _V (k), r _I (k), and r _P (k) are voltage, current, and electric power. Reference.

S3': converting the power vector Ψ _u (k) into a power observation vector Ψ(t) of the analog signal, where t is an instantaneous time;

Still another main object of the present invention is to provide a battery power display method for a wave power consuming system, which can further display a battery-powered voltage, current, power consumption, or battery residual power as a pointer of an analog signal, including the following step:

SS0: after the battery is charged, record the initial storage power Q _{0 of} the battery;

SS1: measuring the instantaneous voltage V(k) of the battery power supply circuit by using the voltage sensing circuit topology digital sampling; measuring the instantaneous current I(k) of the battery and the load power supply circuit by using the current sensing circuit topology digital sampling; The instantaneous voltage V(k) and the instantaneous current I(k) measured by the voltage sensing circuit topology and the current voltage sensing circuit topology are digital signals;

SS2: Calculate the instantaneous electric power P(k) by the instantaneous voltage V(k) and the instantaneous current I(k). After calculating the instantaneous electric power in time, the estimated electric power is compared with the initial stored electric quantity Q _{0 of} the battery, and the estimated one is generated. Residual electric quantity R(k); and constitutes the electric quantity vector Ψ(k);

P(k)=V(k)×I(k)

R(k)=Q ₀ -Σ(P(k)×Δk) (5)

Ψ(k)=[V(k) I( k ) P( k ) R( k )] ^T (6)

Δk is the digital sampling time; if calculated by proportional integral, the electric quantity vector Ψ(k) is calculated as the electric quantity vector Ψ _u (k) by proportional integral (PI);

Ψ _u (k)=[V _u (k) I _u ( k ) P _u ( k ) R _u ( k )] ^T =[ K _IV Σ( r _v ( k )- K _pV V ( k )) K _II Σ( r _I ( k )- K _pI I ( k )) K _IP Σ( r _p ( k )- K _pp P ( k )) K _IR Σ( r _R ( k )- K _pR R ( k ))] ^T (7)

Where K _IV , K _II , K _IP , and K _IR are integral constants; K _PV , K _PI , K _PP , and K _PR are proportional constants; r _V (k), r _I (k), r _P (k), r _R (k) is the reference value for voltage, current, electric power and residual capacity.

SS3: convert the power vector Ψ(k) (or Ψ _u (k)) into a power observation vector Ψ(t) of the analog signal, where t is an instantaneous time;

Ψ(t)=[V(t) I( t ) P( t ) R(t)] ^T (8)

SS4: display the electric quantity observation vector Ψ(t) in a pointer form;

SS5: Back to SS1, k=k+1.

Another main object of the present invention is to provide a battery power display device for a wave power consumption system, which is applied to a power system that supplies power to a load using a battery, including: a current sensing circuit topology, and a voltage sensing circuit topology. The arithmetic processor, the digital analog conversion unit, the proportional integral calculation unit and the display unit; wherein the current sensing circuit topology is connected to the battery and the load in series to measure the instantaneous current I of the digital signal (k The voltage sensing circuit topology is connected in parallel with the battery and the load to measure the instantaneous voltage V(k) of the digital signal and output to the arithmetic processor.

The arithmetic processor can receive the instantaneous voltage V(k) and the instantaneous current I(k), the operation processor includes an operation unit, and the operation unit can calculate the instantaneous voltage V(k) and the instantaneous current I(k) a momentary electric power P(k), and combining the instantaneous voltage V(k), the instantaneous current I(k) and the instantaneous electric power P(k) to form a power vector Ψ(k), and 电量 the electric quantity vector Ψ( k) Output to the proportional integral calculation unit.

The proportional-integral calculating unit can receive the electric quantity vector Ψ(k), and calculate the electric quantity vector Ψ(k) into a electric quantity vector Ψ _u (k), and output the electric quantity vector Ψ _u (k) to the digital analog converting unit. For different purposes, the proportional integral calculation can be a smart calculation, such as a simple PI controller calculation or a fuzzy PI controller.

The digital analog conversion unit may convert the power vector Ψ(k) (or Ψ _u (k)) into a power observation vector Ψ(t) of the analog signal, and output it to the display unit; the display unit is a pointer table, and The electric quantity observation vector Ψ(t) of the analog signal is displayed in a pointer form.

Furthermore, the battery power display device of the wave power consumption system of the present invention can further estimate and display the residual power after adding the storage function and the residual power estimation function; that is, the operation processor further includes a storage unit and a residual power estimation unit; the storage unit may store an initial stored power Q ₀ of an initial state of the battery; the residual power estimating unit may accumulate the instantaneous electric power P(k) with time, and the initial stored power Q ₀ after comparison, to generate a residual power estimate R (k); the instantaneous voltage V (k), the instantaneous current I (k), the instantaneous electric power P (k) and the residual capacity R (k) of any one of The term or combination thereof constitutes a charge vector Ψ(k).

According to the above, the battery power display method and device of the fluctuating power consumption system of the present invention can measure the instantaneous voltage and the instantaneous current of the power circuit of the battery and the load, and after calculation, the instantaneous electric power and the residual electric power can be obtained, and the ratio is obtained. The integral calculation can eliminate the error of the steady state, and then convert by digital analogy, convert any one or a combination of the instantaneous voltage, the instantaneous current, the instantaneous electric power, and the residual electric quantity to be displayed into an analog signal and display it in the form of a pointer; The method and device can avoid too fast pointer jumping and steady state error, and the circular pointer scale is more intuitive and easy to read, which makes the user more convenient.

Please refer to FIG. 2, which is a schematic diagram of a first embodiment of a battery power display device of a wave power consumption system of the present invention. In the figure, the battery power display device 1 is applied to the power system that uses the battery 2 as the power supply to the load 3. In the present embodiment, the load 3 is a robot system, which is merely an example, but not limited thereto. . The robot system has a total of twelve electrically powered servers, including two ankles, knees, hips, wrists, elbows, shoulders and neck. These servers are driven at any time or stopped at any time. The power consumption is an unfixed type of fluctuation. In terms of power consumption, it often jumps in the range of 0 to 60% of the total load, or does not often jump in the range of 40 to 80% of the total load; the fluctuation of this embodiment The battery power display device of the power consumption system can smoothly display the power state of the system, and can be any one or a combination of instantaneous voltage, instantaneous current and instantaneous electric power.

Please refer to FIG. 2, FIG. 4 and FIG. 6 . FIG. 6 is a block diagram showing the steps of the battery power display method of the wave power consumption system according to the embodiment. In FIG. 6 , the steps are as follows:

S1: The instantaneous voltage V(k) of the power supply circuit of the battery 2 is measured by the voltage sensing circuit topology 12 digital sampling; the instantaneous current I of the battery 2 and the load 3 power supply circuit is measured by the current pressure sensing circuit topology 11 digital sampling (k); wherein, the voltage sensing circuit topology 12 and the current voltage sensing circuit topology 11 measured instantaneous voltage V (k) and instantaneous current I (k), are digital signals;

S2: Calculate the instantaneous electric power P(k) by the instantaneous voltage V(k) and the instantaneous current I(k) according to the formula (1), and form the electric quantity vector Ψ(k) as in the formula (2); k is the kth time Digital sampling; wherein Ψ(k) may be any one or a combination of instantaneous voltage V(k), instantaneous current I(k), instantaneous electrical power P(k);

S3: converting the power vector Ψ(k) into a power observation vector Ψ(t) of the analog signal, where t is an instantaneous time, as in equation (3);

S4: displaying any one or a combination of the instantaneous voltage V(t), the instantaneous current I(t), and the instantaneous electric power P(t) of the electric quantity observation vector Ψ(t) in a pointer form;

S5: Return to S1, k=k+1.

The battery power display device 1 of the present embodiment includes: a current sensing circuit topology 11, a voltage sensing circuit topology 12, an arithmetic processor 13, a digital analog conversion unit 16, and a display unit 17; The current sensing circuit topology 11 is connected in series to the power supply circuit formed by the battery 2 and the load 3. The current sensing circuit topology 11 is a digital circuit topology, and the digital sampling can measure the instantaneous current. The digital signal of I(k) is output to the arithmetic processor 13; the voltage sensing circuit topology 12 is connected in parallel to the power supply circuit formed by the battery 2 and the load 3, and the voltage sensing circuit topology 12 is a digital circuit topology, and digitally samples the digital signal of the instantaneous voltage V(k) and outputs it to the arithmetic processor 13; k is the kth digital sampling.

The operation processor 13 can receive the instantaneous voltage V(k) of the digital signal and the instantaneous current I(k). The operation processor 13 includes an operation unit 131, and the operation unit 131 can calculate the instantaneous voltage V(k) and the instantaneous current. (k), generating a transient electric power P(k) by the equation (1), and forming one or a combination of the instantaneous voltage V(k), the instantaneous current I(k), and the instantaneous electric power P(k) The electric quantity vector Ψ(k), as in the equation (2), outputs the electric quantity vector Ψ(k) to the digital analog converting unit 16, wherein the electric quantity vector Ψ(k) is a vector composed of digital signals.

The digital analog conversion unit 16 may convert each vector value of the power vector Ψ(k) into a power observation vector Ψ(t) of the analog signal, as in Equation (3), and output to the display unit 17, where t is an instantaneous time; The display unit 17 includes a voltage indicating table 171, an electric power indicating table 172, and a current indicating table 173. The electric quantity observation vector Ψ(t) of the analog signal can be used to display the instantaneous voltage V(t) and the instantaneous current I in a pointer form. t) and instantaneous electrical power P(t), as shown in Figure 4. The voltage indicating table 171, the electric power indicating table 172, and the current indicating table 173 are in the form of a pointer, and may be an indicator gauge of a product or a pointer table displayed by a liquid crystal display. In this embodiment, The indication table displayed on the liquid crystal display screen is practiced, but not limited thereto.

Please refer to FIG. 3, which is a schematic diagram of a second embodiment of a battery power display device of a wave power consumption system of the present invention. In the figure, the battery power display device 1 is applied to a power system that uses the battery 2 as a power supply to the load 3. As in the first embodiment, the load 3 in this embodiment is also a robot system, and the fluctuation of this embodiment The battery power display device of the power consumption system can smoothly display the power state of the system, and can be any one or a combination of instantaneous voltage, instantaneous current, instantaneous electric power and residual power.

Please refer to FIG. 3, FIG. 5 and FIG. 7. FIG. 7 is a block diagram showing the steps of the battery power display method of the wave power consumption system of the embodiment. In FIG. 7, the steps are as follows:

SS0: after the charging of the battery 2 is completed, the initial storage power Q _{0 of} the battery 2 is recorded by the storage unit 132 of the computing processor 13;

SS1: The instantaneous voltage V(k) of the power supply circuit of the battery 2 is measured by the voltage sensing circuit topology 12 digital sampling; the instantaneous current I (k) of the battery and the load power supply circuit is measured by the current voltage sensing circuit topology 11 digital sampling Wherein, the instantaneous voltage V(k) and the instantaneous current I(k) measured by the voltage sensing circuit topology 12 and the current voltage sensing circuit topology 11 are both digital signals;

SS2: as in Equation (1), the instantaneous electric power P(k) is generated by calculating the instantaneous voltage V(k) and the instantaneous current I(k), and the instantaneous electric power P(k) is calculated by time after the residual electric power estimating unit 133 calculates the time. Comparing equation (5) with the initial stored electric quantity Q _{0 of} the battery 2, estimating that a residual electric quantity R(k) is generated; and composing the electric quantity vector Ψ(k), as in the formula (6); wherein k is the kth Sub-digit sampling; Ψ(k) may be any one or a combination of instantaneous voltage V(k), instantaneous current I(k), instantaneous electric power P(k), residual electric quantity R(k); 7) Calculated by the proportional integral calculation unit 14 by proportional integral, the electric quantity vector Ψ(k) is calculated as the electric quantity vector Ψ _u (k) by proportional integral (PI); wherein, for different purposes, the proportional integral calculation can be wisdom The calculation of the type, such as a simple PI controller calculation or can be calculated by a fuzzy PI controller, is calculated by the fuzzy proportional integral controller in this embodiment.

SS3: (Expression (8), the electric quantity vector Ψ _u (k) is converted into an electric quantity observation vector Ψ(t) of the analog signal, and t is an instantaneous time;

SS4: display the electric quantity observation vector Ψ(t) in a pointer form;

SS5: Back to SS1, k=k+1.

The battery power display device 1 of the present embodiment includes: a current sensing circuit topology 11, a voltage sensing circuit topology 12, an arithmetic processor 13, a proportional integral calculating unit 14, and a digital analog converting unit 16. And a display unit 17; wherein the current sensing circuit topology 11 is connected in series to the power supply circuit formed by the battery 2 and the load 3, and the current sensing circuit topology 11 is a digital circuit topology. The digitized signal of the instantaneous current I(k) is sampled and output to the arithmetic processor 13; the voltage sensing circuit topology 12 is connected in parallel to the power supply circuit formed by the battery 2 and the load 3 The voltage sensing circuit topology 12 is a digital circuit topology, and can digitally sample and measure the digital signal of the instantaneous voltage V(k) and output it to the arithmetic processor 13; k is the kth digital sampling.

The operation processor 13 can receive the instantaneous voltage V(k) of the digital signal and the instantaneous current I(k). The operation processor 13 includes an operation unit 131, a storage unit 132, and a residual power estimation unit 133. The operation unit 131 The instantaneous voltage V(k) and the instantaneous current can be calculated I(k), and the instantaneous electric power P(k) is calculated by the formula (1); the storage unit 132 can store the initial stored electric quantity Q ₀ of the initial state of the battery 2. The residual power estimation unit 133 may accumulate the instantaneous electric power P(k) in time, and after comparing with the initial stored electric quantity Q ₀ (as in the formula (5)), estimate to generate a residual electric quantity R(k); The arithmetic unit 131 forms any one or a combination of the instantaneous voltage V(k), the instantaneous current I(k), and the instantaneous electric power P(k) to form a power vector Ψ(k), such as equation (2), and the amount of power The vector Ψ(k) is output to the proportional-integral calculation unit 14, wherein the electric quantity vector Ψ(k) is a vector composed of digital signals.

The proportional integral calculation unit 14 is connected to the operation processor 13, and can receive the power vector Ψ(k), and the power vector Ψ(k) is calculated by the proportional integral calculation unit 14 by the proportional integral calculation unit 14 as a power vector. Ψ _u (k), the power vector Ψ _u (k) is output to the digital analog conversion unit 16.

The digital analog conversion unit 16 can convert each vector value of the power vector Ψ _u (k) into a power observation vector Ψ(t) of the analog signal, as in Equation (8), and output it to the display unit 17, where t is an instantaneous time; The display unit 17 includes an electric power indicating table 172 and a residual electric power indicating table 174. The electric quantity observation vector Ψ(t) of the analog signal can display the instantaneous electric power P(t) and the residual electric quantity R(t) in a pointer form. As shown in Figure 5. The electric power indicating table 172 and the residual electric power indicating table 174 are in the form of a pointer. In this embodiment, the indication table displayed on the liquid crystal display screen is practiced.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1. . . Battery residual capacity display device

2. . . battery

3. . . load

11. . . Current sensing circuit topology

12. . . Voltage sensing circuit topology

13. . . Arithmetic processor

131. . . Arithmetic unit

132. . . Storage unit

133. . . Residual capacity estimation unit

14. . . Proportional integral calculation unit

16. . . Digital analog conversion unit

17. . . Display unit

171. . . Voltage indicator

172. . . Electric power indicator

173. . . Current indicator

174. . . Residual power indicator

91. . . Indication controller

92. . . battery

93. . . Pulse width modulator

94. . . Battery monitor

95. . . Light-emitting diode lamp

as well as

S1~S5. . . Method step

as well as

SS0~SS5. . . Method step

Figure 1 is a schematic diagram of a conventional battery power display device;

2 is a schematic view showing a first embodiment of a battery power display device of a wave power consumption system of the present invention;

3 is a schematic view showing a second embodiment of a battery power display device of the wave power consumption system of the present invention;

4 is a schematic diagram of a voltage indicating table, an electric power indicating table, and a current indicating table of the first embodiment of the battery power display device of the fluctuating power consumption system of the present invention;

5 is a schematic diagram of an electric power indicating table and a residual electric power indicating table of a second embodiment of the battery electric quantity display device of the fluctuating power consumption system of the present invention;

Figure 6 is a block diagram showing the steps of the first embodiment of the battery power display method of the fluctuating power consumption system of the present invention;

Figure 7 is a block diagram showing the second embodiment of the battery power display method of the fluctuating power consumption system of the present invention.

1. . . Battery residual capacity display device

2. . . battery

3. . . load

11. . . Current sensing circuit topology

12. . . Voltage sensing circuit topology

13. . . Arithmetic processor

131. . . Arithmetic unit

132. . . Storage unit

133. . . Residual capacity estimation unit

14. . . Proportional integral calculation unit

16. . . Digital analog conversion unit

17. . . Display unit

172. . . Electric power indicator

as well as

174. . . Residual power indicator

Claims (10)

A battery power display method for a wave power consumption system is applied to a power system for supplying power to a load by using a battery, comprising the following steps: S1: measuring a transient voltage of one of the battery power supply circuits by digital sampling; Sampling and measuring an instantaneous current of the battery and the load power supply circuit; S2: calculating an instantaneous electric power by using the instantaneous voltage and the instantaneous current; and combining the instantaneous voltage, the instantaneous current and the instantaneous electric power or a combination thereof Forming a power vector; S3: converting the power vector into one of the analog signals; S4: displaying the power observation vector in a pointer form; and S5: returning to S1 for the next sampling. The battery power display method of the fluctuation power consumption system of claim 1, wherein the step S2 further comprises a proportional integral calculation, and the power vector can be proportionally integrated. The battery power display method of the wave power consumption system of claim 2, wherein the proportional integral is calculated as a fuzzy proportional integral calculation. A battery power display method for a wave power consumption system is applied to a power system for supplying power to a load by using a battery, comprising the following steps: SS0: after the battery is charged, recording an initial storage power of the battery; SS1 : measuring the instantaneous voltage of one of the battery power supply circuits by digital sampling; measuring the instantaneous current of the battery and the load power supply circuit by digital sampling; SS2: calculating an instantaneous electric power by using the instantaneous voltage and the instantaneous current; After the instantaneous electric power is calculated by time, compared with the initial stored power of the battery, it is estimated that a residual electric quantity is generated; and any one or a combination of the instantaneous voltage, the instantaneous current, the instantaneous electric power and the residual electric quantity constitutes a electric quantity. Vector; SS3: converts the power vector into one of the analog signals, the power observation vector; SS4: displays the power observation vector in the form of a pointer; and SS5: returns to SS1 for the next sampling. The battery power display method of the fluctuation power consumption system of claim 4, wherein the step SS2 further comprises a proportional integral calculation, and the power vector can be proportionally integrated. The method for displaying a battery power of a wave power consumption system according to claim 5, wherein the proportional integral is calculated as a fuzzy proportional integral calculation. A battery power display device for a wave power consumption system is applied to a power system for supplying power to a load by using a battery, comprising: a current sensing circuit topology, a voltage sensing circuit topology, and an arithmetic processor a digital analog conversion unit and a display unit; wherein the current sensing circuit topology and the voltage sensing circuit topology are connected to a power supply circuit formed by the battery and the load for separately measuring An instantaneous current and an instantaneous voltage of the digital signal are output to the operation processor; wherein the operation processor can receive the instantaneous current of the digital signal and the instantaneous voltage, the operation processor includes an operation unit, the operation unit The instantaneous current and the instantaneous voltage may be calculated to generate a transient electric power, and any one or a combination of the instantaneous current, the instantaneous voltage and the instantaneous electric power constitutes a power vector, and the power vector is output to the digital analogy a conversion unit; the digital analog conversion unit converts the power vector into a charge observation vector of an analog signal, and outputs the display to the display Unit; the display unit is a pointer table form, the charge may be an observation vector of the analog signal is displayed in tabular form the pointer. The battery power display device of the fluctuation power consumption system of claim 7, wherein the operation processor further comprises a storage unit and a residual power estimation unit; the storage unit can store the initial state of the battery An initial stored power; the residual power estimating unit may accumulate the instantaneous electric power in time, and after comparing with the initial stored electric quantity, estimate to generate a residual electric quantity; the instantaneous voltage, the instantaneous current, the instantaneous electric power and the residual Any one or combination of electric quantities constitutes the electric quantity vector. The battery power display device of the fluctuation power consumption system of claim 8, further comprising a proportional integral calculation unit, wherein the proportional integral calculation unit is coupled to the operation processor to receive the power vector, the power amount The vector is proportionally integrated and output to the digital analog conversion unit. The battery power display device of the fluctuation power consumption system of claim 7, further comprising a proportional integral calculation unit, wherein the proportional integral calculation unit is coupled to the operation processor, and the power vector is received, and the power is received. The vector is proportionally integrated and output to the digital analog conversion unit.