CN113320439A - Electric vehicle and display method - Google Patents

Electric vehicle and display method Download PDF

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Publication number
CN113320439A
CN113320439A CN202110197992.1A CN202110197992A CN113320439A CN 113320439 A CN113320439 A CN 113320439A CN 202110197992 A CN202110197992 A CN 202110197992A CN 113320439 A CN113320439 A CN 113320439A
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CN
China
Prior art keywords
display
estimation
unit
estimation result
display control
Prior art date
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.)
Pending
Application number
CN202110197992.1A
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Chinese (zh)
Inventor
数野修一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
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Honda Motor Co Ltd
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Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of CN113320439A publication Critical patent/CN113320439A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

The problem to be solved by the present invention is to provide information on the state of degradation of a secondary battery in more detail. In order to solve the above problem, an electrically powered vehicle 1 that travels by driving a motor with electric power of a secondary battery 2 is provided with: an estimation unit 11 that estimates a state of degradation of the secondary battery 2; a display unit 7 for displaying the estimation result obtained by the estimation unit 11; and a display control unit 8 for controlling the display of the display unit 7; the display control unit 8 displays the estimation result obtained by the estimation unit 11 on the display unit 7 together with the time information of the estimation time of the estimation result. Preferably, the display control unit 8 displays the estimation method of the estimation result displayed on the display unit 7 according to the operation of the driver.

Description

Electric vehicle and display method
Technical Field
The present invention relates to an electric vehicle and a display method in the electric vehicle.
Background
Conventionally, there has been proposed an electric vehicle that drives a motor by electric power of a chargeable and dischargeable secondary battery and travels by driving force of the motor. It is known that in such an electrically powered vehicle, a value indicating the State of deterioration of the secondary battery is displayed (State of health) (SOH) (for example, patent document 1).
[ Prior Art document ]
(patent document)
Patent document 1: japanese laid-open patent publication No. 2009-208484
Disclosure of Invention
[ problems to be solved by the invention ]
However, in the electric vehicle, in more detail, it is considered that if information relating to the deterioration state of the secondary battery can be provided, the driver can be given a sense of reassurance and can further take appropriate measures.
The present invention has been made in view of such circumstances, and an object thereof is to provide information on the state of degradation of a secondary battery in more detail.
[ means for solving problems ]
In order to solve the above-described problems, the invention according to claim 1 is an electrically powered vehicle that travels by driving a motor using electric power of a secondary battery, the electrically powered vehicle including:
an estimation unit that estimates a state of deterioration of the secondary battery;
a display unit for displaying the estimation result obtained by the estimation unit; and a process for the preparation of a coating,
a display control unit that controls display of the display unit;
the display control unit displays the estimation result obtained by the estimation unit on the display unit together with time information of the estimation time of the estimation result.
The invention of claim 2 is directed to the configuration of claim 1, wherein the display control unit displays an estimation method of the estimation result displayed on the display unit in accordance with an operation by a driver.
The invention of claim 3 is directed to the configuration of claim 1 or claim 2, wherein the display control portion displays an error of the estimation result due to a sensor used for estimation of the degradation state, in accordance with an operation by a driver.
The invention of claim 4 is configured as to any one of claim 1, claim 2, and claim 3, wherein the display control unit switches the number of digits of the estimation result displayed on the display unit in accordance with an operation by a driver.
The invention of claim 5 is configured as to any one of claim 1, claim 2, claim 3, and claim 4, wherein the display control unit switches display of the explanatory text of the estimation result displayed on the display unit.
The invention of claim 6 is configured as to any one of claim 1, claim 2, claim 3, claim 4, and claim 5, wherein the display control unit switches between display and non-display of the accuracy of the degradation state in accordance with an operation by a driver.
The invention of claim 7 is a display method of an electric vehicle that runs by driving a motor with electric power of a secondary battery, wherein,
the deterioration state of the secondary battery is estimated, and the estimation result is displayed together with time information of the estimation timing of the estimation result.
(Effect of the invention)
According to the present invention, information on the state of degradation of the secondary battery can be provided in more detail.
Drawings
Fig. 1 is a block diagram showing the configuration of an electric vehicle according to embodiment 1 of the present invention.
Fig. 2 is a diagram showing a display example of the display section 7.
Fig. 3 is a diagram showing another display example of the display section 7.
Fig. 4 is a diagram showing another display example different from the example of fig. 3.
Fig. 5 is a diagram showing an example of the explanatory text.
Fig. 6 is a diagram showing another example of the explanatory text.
Detailed Description
[ embodiment 1 ]
[ integral constitution ]
Fig. 1 is a diagram showing an electric vehicle of embodiment 1 of the invention. The electric vehicle 1 is a vehicle that runs by electric power of a battery (secondary battery) 2. The electric vehicle 1 is connected to a charging device 3 by a cable, charges a battery 2 by power supplied from the charging device 3, and runs by the power of the battery 2. During deceleration, the battery 2 is charged with electric power generated by regenerative braking.
The present invention can be widely applied even if the charging device 3 is replaced with the following configuration: a configuration in which the battery 2 is charged with electric power from an internal combustion engine, a fuel cell, or the like, which is incorporated in the charging device 3; and a configuration in which the battery is charged by a commercial power source using a built-in charging device.
The electric vehicle 1 includes a drive unit 6, a display unit 7, a display control unit 8, a battery sensor 9, and the like.
Here, the driving unit 6 has various configurations such as a motor driven by the electric power of the battery 2, a driving wheel rotated by the motor, and a braking mechanism for controlling the rotation of the driving wheel, and supplies the electric power generated by regenerative braking of the motor to the battery 2 at the time of deceleration.
The display unit 7 is a part for displaying vehicle information such as a vehicle speed and a travel distance, and an image display panel such as a liquid crystal display panel or an organic Electroluminescence (EL) display panel may be applied. The configuration of the navigation device for displaying navigation information may also be applied.
The display control unit 8 controls the display of the display unit 7, and acquires various vehicle information such as a vehicle speed output from a controller of the electric vehicle 1 and displays the vehicle information on the display unit 7.
The battery sensor 9 is configured to acquire various information necessary for controlling charging and discharging of the battery 2, and includes a configuration to detect at least a terminal voltage of the battery 2, a charging and discharging current of the battery 2, and a temperature. The electric vehicle 1 controls charging and discharging using information detected by the battery sensor 9.
[ deterioration diagnosis ]
The deterioration diagnosis unit 10 detects deterioration of the battery 2.
The electric vehicle 1 obtains an estimated value of the deterioration state by the estimation unit 11 provided in the deterioration diagnosis unit 10, and displays the estimated value as a result of detection of the deterioration state on the display unit 7 by the display control unit 8.
Here, the estimation unit 11 estimates the state of degradation of the battery 2 using the change in the internal resistance of the battery 2. More specifically, the estimation unit 11 calculates an internal resistance from the Charge/discharge current and the terminal voltage detected by the battery sensor 9, determines the calculated internal resistance from a standard value (initial value) in accordance with the State Of Charge (SOC) Of the secondary battery obtained from the terminal voltage Of the secondary battery 2 detected by the Charge/discharge control, and determines the deterioration State.
The estimation of the degradation state is not limited to this, and various methods can be applied. Specifically, the internal resistance can be calculated and the state of degradation can be estimated similarly using only the charge performed by the charging device 3 of the battery 2. Further, the server may be loaded with the charge/discharge current, the terminal voltage, and the temperature detected by the battery sensor 9, and the SOC due to the terminal voltage of the battery 2 detected by the charge/discharge control at regular time intervals, and estimate and acquire the deterioration state by the server.
Instead of estimating the degradation state by the change in the internal resistance, the degradation state may be estimated by using the change in the charge capacity. At this time, the estimation unit 11 calculates a capacity change (Δ AH) of the battery 2 using the charge/discharge current detected by the battery sensor 9 and the terminal voltage, and estimates the state of degradation using a variable Δ SOC divided by the corresponding SOC detected by the charge/discharge control. And in the estimation of the state of degradation by this change in the charge capacity, as in the case of being performed by the change in the internal resistance, it is possible to detect only at the time of charging of the storage battery 2 by the charging device 3, and it is also possible to estimate the state of degradation by the processing of the server.
Further, the estimated value may be calculated by using a change in the terminal voltage with respect to an increase in the discharge current.
The deterioration state is thus detected, and the deterioration diagnosis unit 10 calculates the accuracy of the estimated value of the deterioration state by the estimation unit 11.
Here, various methods can be applied to the calculation method of the accuracy, and for example, a case of detection by statistical processing of detection results such as deviation detection, a case of detection by time division for detection of the internal resistance, the capacity change (Δ AH), and the variable Δ SOC of the SOC, and the like can be applied. In addition, when the estimated value is obtained by the server processing, the accuracy is obtained by performing calculation on the server side, but the calculation may be performed by the estimation unit 11.
[ display control by the display control section ]
The display control unit 8 displays the remaining amount (remaining capacity) of the battery 2 detected by the charge/discharge control and the detection result of the deterioration state obtained by the deterioration diagnosis unit 10 on the display unit 7 in accordance with the operation of the driver. In this display, the display control unit 8 displays the time information of the estimation time of the estimation result together.
Fig. 2 is a diagram showing a display example of the detection result.
The display control unit 8 displays a mark 21 for calling the dry cell of the battery 2 in the display area 7A of the detection result provided on the display unit 7. Then, the charging rate of 100% when no deterioration occurs is expressed by the appearance of the mark 21, the color of the mark 21 of the dry cell is switched in the middle, and the remaining amount is displayed by the boundary of the color switching. Further, the color is switched below the mark 21, and the detection result of the deterioration state is displayed. Then, the detection results of the remaining amount and the deterioration state are displayed in numerical numbers at the corresponding positions of the marks 21. Therefore, in the example of fig. 2, the chargeable capacity is reduced by 11% due to the deterioration, and the detected remaining amount indicates 86% of the full charge amount when no deterioration occurs.
Further, in this display, a "color" mark is attached to the end of the display of the number of the degradation detection result, and in accordance with this mark, "degradation calculation date: in 2019, 8, 7, and 7, the time information of the estimated time is displayed by the display of year, month, and day.
The display control unit 3 switches the display of the time information based on the year, month, and day to the display based on the year, month, day, hour, minute, and second as shown in fig. 3, in comparison with fig. 2, according to the operation of the driver.
In this way, by displaying the time information at the estimation time of the estimation result, the electric vehicle 1 can provide more detailed information on the deterioration state of the secondary battery than before, and can give a sense of security to the driver, and can further take appropriate measures such as replacement of the secondary battery.
In addition, various methods can be applied to the display method of the remaining amount or the like, and for example, as shown in fig. 4, the detection result of the deterioration state is displayed on the upper side of the mark 21 of the dry cell, as compared with fig. 2, thereby displaying the decrease in the total capacity ("MAX 89%" display) and further displaying the remaining amount. In the display of fig. 4, the symbol MAX is set: and (3) a display instruction indicating that the deterioration is 11% over time compared with the production.
In addition, the time information may be displayed together with the estimated required time (diagnosis time), or alternatively or additionally, the number of samples of the estimated required data may be displayed.
Further, the display control unit 8 displays a method of estimating the deterioration state based on the operation of the driver. Specifically, in the examples of fig. 3 and 4, the display of "analyzing and detecting degradation with a server" and "detecting degradation at the time of charging" are used to indicate which process has been used to detect the degradation state. Thereby, more detailed information on the deterioration state of the secondary battery can be provided.
The display control unit 8 displays the estimation technique in this manner, and displays the estimation technique in further detail in accordance with the operation of the driver.
Here, the detailed display of the estimation technique is performed by switching the display of the display area 7A and displaying an explanatory drawing to display explanatory characters in more detail. Specifically, the specification states "a current sensor and a voltage sensor are used, and output deterioration is detected with reference to a past diagnosis result. "," capacity deterioration is measured and detected based on Δ Ah/Δ SOC. "calculated from the voltage drop sensitivity with respect to the current at the time of assist using the ECU for vehicle mounting", and the like. This also provides the information on the state of degradation of the secondary battery in more detail.
The display control unit 8 displays the deterioration state in this manner, and switches the display of the accuracy of the estimation result according to the operation of the driver. More specifically, the display control portion 8, in response to the operation by the driver, switches between display and non-display of the accuracy detected by the estimation portion 11, and further displays an error of the estimation result due to the sensor used for estimation of the degraded state.
Here, the error is displayed by displaying the measurement error of the sensor itself and the error of the accuracy of the degradation detection result due to the error for each sensor. Specifically, for example, "current sensor accuracy 3%, degradation detection error 1.5%", "voltage sensor accuracy 5%, degradation detection error 2.5%", "temperature sensor accuracy 2%, degradation detection error 1%" and the like are displayed. The display mode is not limited to this, and various display modes can be applied. Thereby, in the electric vehicle 1, the deterioration state-related information can be provided in further detail.
Then, the display control unit 8 displays the deterioration state in this manner, and when any display item is selected by an operation of the touch panel provided on the display unit 7, the explanatory text of the selected display item is displayed.
Fig. 5 and 6 are diagrams showing examples of display of the explanatory characters, fig. 5 being an example of when the character display of deterioration is selected by the driver, and fig. 6 being an example of when the character display of the deterioration calculation date is selected by the driver.
The display control unit 8 displays a message for confirming the content of the driver's inquiry as indicated by symbols Q1 and Q2, and then displays corresponding explanations as indicated by symbols a1, a2, and A3, thereby providing the explanations in a dialogue form. Alternatively, the spoken word may be provided by voice.
The display control unit 8 displays the deterioration state in this manner, and switches the number of bits of the estimation result to be displayed according to the operation of the driver. More specifically, for example, in the display of the percentage of the deterioration state, the number of digits equal to or smaller than the decimal point is switched in accordance with the operation of the driver. Thereby, the electric vehicle 1 improves the convenience of use for the driver.
The display control unit 8 displays the deterioration state in this manner, and switches the display of the explanatory characters in accordance with the operation of the driver. More specifically, the display control unit 8 starts displaying the description in response to the operation of the driver, and further stops the display. Alternatively or additionally, the explanation may be switched between the detailed explanation and the simple explanation, or may be switched between the long explanation and the short explanation. Thus, the electric vehicle 1 can improve the convenience of use for the driver.
Further, the display control unit 8 displays the deterioration state in this manner, and switches the display of the accuracy of the estimation result in accordance with the operation of the driver. More specifically, the display control unit 8 switches between display and non-display of the accuracy in response to the operation by the driver.
[ information notification of display switching ]
The display control unit 8 notifies the server of the estimation result obtained by the estimation unit 11 selected by the driver, the number of bits of the estimation result, the explanation of the estimation result, and the display of the accuracy, together with the current position information at each selected time. Thus, the server accumulates these notifications and analyzes the accumulated information, and various methods such as development of a following vehicle can be used.
According to the above configuration, the estimation result obtained by the estimation unit that estimates the state of degradation of the secondary battery is displayed together with the time information of the estimation time of the estimation result, whereby the information relating to the state of degradation of the secondary battery can be provided in more detail.
Further, by displaying an estimation method for estimating the result according to the operation of the driver, the information relating to the deterioration state can be provided in more detail.
Also, an error of the estimation result due to the sensor used for the estimation of the degraded state is further displayed, whereby the estimation accuracy of the degraded state is further displayed, whereby the degraded state-related information can be provided in more detail.
Further, the number of bits of the display of the estimation result is switched, the display of the explanatory text of the estimation result is further switched, and the display of the precision is switched, whereby the convenience of use for the driver can be improved.
[ other embodiments ]
Although the preferred specific configurations of the implementation of the present invention have been described in detail above, the configurations of the above-described embodiments may be variously modified without departing from the scope of the present invention.
Reference numerals
1 electric vehicle
2 accumulator
3 charging device
6 drive part
7 display part
8 display control part
9 accumulator sensor
10 deterioration diagnosis part
11 estimation part

Claims (7)

1. An electrically powered vehicle that travels by driving a motor with electric power of a secondary battery, comprising:
an estimation unit that estimates a state of deterioration of the secondary battery;
a display unit for displaying the estimation result obtained by the estimation unit; and a process for the preparation of a coating,
a display control unit that controls display of the display unit;
the display control unit displays the estimation result obtained by the estimation unit on the display unit together with time information of the estimation time of the estimation result.
2. The electrically-driven vehicle according to claim 1, wherein the display control unit displays an estimation method of the estimation result displayed on the display unit in accordance with an operation by a driver.
3. The electric vehicle according to claim 1 or 2, wherein the display control portion displays an error of the estimation result due to a sensor used for estimation of the degradation state according to an operation by a driver.
4. The electric vehicle according to claim 1 or 2, wherein the display control portion switches the number of bits of the estimation result displayed on the display portion according to an operation by a driver.
5. The electric vehicle according to claim 1 or 2, wherein the display control unit switches display of an explanatory character of the estimation result displayed on the display unit.
6. The electric vehicle according to claim 1 or 2, wherein the display control unit switches between display and non-display of the accuracy of the degradation state in accordance with an operation by a driver.
7. A display method for an electric vehicle that runs by driving a motor with electric power of a secondary battery,
the deterioration state of the secondary battery is estimated, and the estimation result is displayed together with time information of the estimation timing of the estimation result.
CN202110197992.1A 2020-02-28 2021-02-22 Electric vehicle and display method Pending CN113320439A (en)

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JP2020033453A JP7421957B2 (en) 2020-02-28 2020-02-28 Electric vehicle, display method
JP2020-033453 2020-02-28

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Publication Number Publication Date
CN113320439A true CN113320439A (en) 2021-08-31

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010022154A (en) * 2008-07-11 2010-01-28 Toyota Motor Corp System and method for displaying degradation of power storage device
JP2012073175A (en) * 2010-09-29 2012-04-12 Panasonic Corp Cell state display device
CN103728561A (en) * 2012-10-15 2014-04-16 索尼公司 Method of estimating battery life, battery life estimation device and electric vehicle
WO2014132332A1 (en) * 2013-02-26 2014-09-04 株式会社 日立製作所 Degradation estimation device and degradation estimation method
JP2017120270A (en) * 2012-07-31 2017-07-06 パナソニックＩｐマネジメント株式会社 Control method and control device using the same
CN107284241A (en) * 2016-04-01 2017-10-24 现代自动车株式会社 The equipment that the server of the battery dispaly state of vehicle is provided and dispaly state is set

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6241646B2 (en) 2013-06-11 2017-12-06 日本精機株式会社 In-vehicle battery information display device
JP2019105595A (en) 2017-12-14 2019-06-27 三菱自動車工業株式会社 Secondary battery system for vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010022154A (en) * 2008-07-11 2010-01-28 Toyota Motor Corp System and method for displaying degradation of power storage device
JP2012073175A (en) * 2010-09-29 2012-04-12 Panasonic Corp Cell state display device
JP2017120270A (en) * 2012-07-31 2017-07-06 パナソニックＩｐマネジメント株式会社 Control method and control device using the same
CN103728561A (en) * 2012-10-15 2014-04-16 索尼公司 Method of estimating battery life, battery life estimation device and electric vehicle
WO2014132332A1 (en) * 2013-02-26 2014-09-04 株式会社 日立製作所 Degradation estimation device and degradation estimation method
CN107284241A (en) * 2016-04-01 2017-10-24 现代自动车株式会社 The equipment that the server of the battery dispaly state of vehicle is provided and dispaly state is set

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