CN205273208U - Electric automobile instrument SOC display device - Google Patents
Electric automobile instrument SOC display device Download PDFInfo
- Publication number
- CN205273208U CN205273208U CN201521059348.4U CN201521059348U CN205273208U CN 205273208 U CN205273208 U CN 205273208U CN 201521059348 U CN201521059348 U CN 201521059348U CN 205273208 U CN205273208 U CN 205273208U
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- China
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- battery
- display device
- mcu
- sampling circuit
- current sampling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model discloses an electric automobile instrument SOC display device, including ECU, MCU, combination meter, battery, time -recorder and current sampling circuit, ECU is connected with combination meter and MCU through the CAN bus simultaneously, and MCU still is connected with time -recorder and current sampling circuit simultaneously, and current sampling circuit still is connected with the battery. But but electric automobile instrument SOC display device can simultaneous display surplus power consumption with surplus driving distance, and the precision improves greatly, and conveniently makes the driver watch obtain information fast.
Description
Technical field
This utility model relates to electric vehicle engineering field, refers in particular to a kind of electric vehicle instrument SOC display device.
Background technology
SOC, as the topmost parameter of battery behavior, is the emphasis of power battery management system research, estimates the SOC of battery only accurately, battery SOC just can be made to maintain all the time in rational target zone. Current electric vehicle instrument SOC display device, the information of display is detailed not, only has dump energy and shows, and remaining battery power exists inaccurate phenomenon, have impact on normal use. China Patent Publication No. CN103260932A, publication date on August 21st, 2013, name has been called disclosed in the patent of invention of " display system of electric vehicle and possess the electric vehicle of this display system " a kind of display system, and display SOC display part (210) on the display apparatus includes first area (R1) and second area (R2). First area (R1) represents the scope of the SOC of the driving performance being able to ensure that minimum. SOC display part (210) is display SOC in this first area (R1). Second area (R2) represents the scope of the SOC of the driving performance that cannot guarantee minimum. The border of first area (R1) and second area (R2) is equivalent to represent the SOC lower limit (SL) of the lower limit of the SOC of the driving performance being able to ensure that minimum, and this SOC lower limit (SL) sets based on the temperature of electrical storage device. Being disadvantageous in that, this invention still only shows dump energy, and display function is comparatively single, and Consumer's Experience is poor.
Utility model content
The purpose of this utility model is to overcome electric vehicle instrument SOC display device in prior art only to show dump energy, the shortcoming that display function is comparatively single, it is provided that a kind of electric vehicle instrument SOC display device that can show residual running mileage.
The purpose of this utility model is to be achieved by following technical proposals:
A kind of electric vehicle instrument SOC display device, including ECU, MCU, combination instrument, battery, timer and current sampling circuit, ECU is connected with combination instrument and MCU by CAN simultaneously, MCU is also connected with timer and current sampling circuit simultaneously, and current sampling circuit is also connected with battery.
Inside battery is carried out current integration calculating and submits dump energy and residual running mileage to, shown by combination instrument, considerably increase the accuracy that dump energy shows, and residual running mileage can make driver intuitively understand and make to operate accurately accordingly. The computing formula of ampere-hour integration method is:
SOC0 is the SOC of initial time; �� 1 is Coulomb efficiency, is defined as the actual electron transfer number in cell reaction and the ratio of theoretical electron transfer number, may be defined as again the ratio of virtual electrode mass change and theoretical electrode mass change; �� 2 is the efficiency for charge-discharge of battery, the ratio of the capacity that the capacity that namely battery discharge is released is filled with battery; C is the total capacity of battery,The discharge current I of expression battery integration on the time [0, t], discharge current is recorded by current sampling circuit, and the time, t was recorded by timer. In discharge process, the electric current I of battery is nonnegative value. Calculate after accurately at S0C, by the mileage of Vehicular battery is demarcated, it is determined that the total course continuation mileage of Vehicular battery, then display that distance travelled lattice are averaged, so the mileage of display can accurately represent.
As a kind of preferred version, electric vehicle instrument SOC display device also includes pressure transducer, and pressure transducer is arranged in automotive seat, and pressure transducer is also connected with MCU. Pressure transducer is for detecting whether have passenger on automotive seat, and when pressure transducer detects that passenger increases, residual running mileage is modified by MCU, makes residual running mileage meet truth.
As a kind of preferred version, electric vehicle instrument SOC display device also includes temperature sensor, and temperature sensor is connected with MCU, and temperature sensor is arranged on automobile batteries case surface. Temperature sensor is for detecting the ambient temperature of battery, and when temperature is more high, the electric energy that battery provides is more many, and residual running mileage is modified by MCU, makes residual running mileage meet truth
As a kind of preferred version, electric vehicle instrument SOC display device also includes a switch and a delay switch, and switch and delay switch are connected in parallel between ECU and combination instrument. When automobile starting, delay switch closes, combination instrument shows residual running mileage, after a period of time, delay switch disconnects, combination instrument does not show residual running mileage, makes the information that combination instrument shows reduce, it is to avoid driver observes the most useful information that too much not easily obtains in time because of combination instrument information. When driver thinks observation residual running mileage, as long as Guan Bi switchs.
The beneficial effects of the utility model are, electric vehicle instrument SOC display device can show residue available power and residual running mileage simultaneously, and precision is greatly improved, and fast and easy makes driver watch acquisition information. This practicality is practical, be easily achieved.
Accompanying drawing explanation
Fig. 1 is a kind of schematic block circuit diagram of the present utility model.
Wherein: 1, ECU, 2, MCU, 3, combination instrument, 4, battery, 5, timer, 6, current sampling circuit, 7, pressure transducer, 8, temperature sensor, 9, switch, 10, delay switch.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further described.
Embodiment: a kind of electric vehicle instrument SOC display device, its schematic block circuit diagram is as shown in Figure 1, including ECU1, MCU2, combination instrument 3, battery 4, timer 5, current sampling circuit 6, pressure transducer 7, temperature sensor 8, switch 9 and delay switch 10, ECU is connected with combination instrument and MCU by CAN simultaneously, MCU is also connected with timer and current sampling circuit simultaneously, and current sampling circuit is also connected with battery. Pressure transducer is arranged in automotive seat, and pressure transducer is also connected with MCU. Temperature sensor is connected with MCU, and temperature sensor is arranged on automobile batteries case surface. Switch and delay switch are connected in parallel between ECU and combination instrument.
Inside battery is carried out current integration calculating and submits dump energy and residual running mileage to, shown by combination instrument, considerably increase the accuracy that dump energy shows, and residual running mileage can make driver intuitively understand and make to operate accurately accordingly. The computing formula of ampere-hour integration method is:
SOC0 is the SOC of initial time; �� 1 is Coulomb efficiency, is defined as the actual electron transfer number in cell reaction and the ratio of theoretical electron transfer number, may be defined as again the ratio of virtual electrode mass change and theoretical electrode mass change; �� 2 is the efficiency for charge-discharge of battery, the ratio of the capacity that the capacity that namely battery discharge is released is filled with battery; C is the total capacity of battery,The discharge current I of expression battery integration on the time [0, t], discharge current is recorded by current sampling circuit, and the time, t was recorded by timer. In discharge process, the electric current I of battery is nonnegative value. Calculate after accurately at S0C, by the mileage of Vehicular battery is demarcated, it is determined that the total course continuation mileage of Vehicular battery, then display that distance travelled lattice are averaged, so the mileage of display can accurately represent.
Claims (4)
1. an electric vehicle instrument SOC display device, it is characterized in that, including ECU(1), MCU(2), combination instrument (3), battery (4), timer (5) and current sampling circuit (6), ECU is connected with combination instrument and MCU by CAN simultaneously, MCU is also connected with timer and current sampling circuit simultaneously, and current sampling circuit is also connected with battery.
2. a kind of electric vehicle instrument SOC display device according to claim 1, is characterized in that, also including pressure transducer (7), pressure transducer is arranged in automotive seat, and pressure transducer is also connected with MCU.
3. a kind of electric vehicle instrument SOC display device according to claim 1 and 2, is characterized in that, also including temperature sensor (8), temperature sensor is connected with MCU, and temperature sensor is arranged on automobile batteries case surface.
4. a kind of electric vehicle instrument SOC display device according to claim 1, is characterized in that, also includes a switch (9) and a delay switch (10), and switch and delay switch are connected in parallel between ECU and combination instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059348.4U CN205273208U (en) | 2015-12-18 | 2015-12-18 | Electric automobile instrument SOC display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059348.4U CN205273208U (en) | 2015-12-18 | 2015-12-18 | Electric automobile instrument SOC display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205273208U true CN205273208U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521059348.4U Expired - Fee Related CN205273208U (en) | 2015-12-18 | 2015-12-18 | Electric automobile instrument SOC display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205273208U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662510A (en) * | 2016-07-29 | 2018-02-06 | 长城汽车股份有限公司 | Remaining continual mileage detection method, detection means and vehicle |
-
2015
- 2015-12-18 CN CN201521059348.4U patent/CN205273208U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662510A (en) * | 2016-07-29 | 2018-02-06 | 长城汽车股份有限公司 | Remaining continual mileage detection method, detection means and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210209 Address after: 310012 Room 201, attached floor, east part, West 1st floor, building 16, No.1 Jiaogong Road, Xihu District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU LIUCHUANG ELECTRIC VEHICLE TECHNOLOGY Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 201501 no.2788 Wanfeng Road, Fengjing town, Jinshan District, Shanghai Patentee before: KANDI ELECTRIC AUTOMOBILE (SHANGHAI) Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20211218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |