CN103419647B - For the battery pack charge quantity display method of elec. vehicle - Google Patents
For the battery pack charge quantity display method of elec. vehicle Download PDFInfo
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- CN103419647B CN103419647B CN201210150948.6A CN201210150948A CN103419647B CN 103419647 B CN103419647 B CN 103419647B CN 201210150948 A CN201210150948 A CN 201210150948A CN 103419647 B CN103419647 B CN 103419647B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
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Abstract
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of electronlmobil or battery-operated motor cycle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, real-time battery pack charge quantity convert information is analog voltage signal by described main control chip, described analog voltage signal via wire transmission to the control read out instrument of electronlmobil or battery-operated motor cycle, adopt in this way, there is structure simple, with low cost, the feature that precision is higher and safe.
Description
[technical field]
The present invention relates to a kind of carrying capacity display method of power brick, especially for the carrying capacity display method of the power brick of elec. vehicle.
[background technology]
Along with oil resources day by day reduce and the pollution of environment day by day serious, protection of the environment, energy-saving and emission-reduction become current trend in the world and trend.In this context, in recent years, be that the elec. vehicle of main power source or partial power source (mainly comprises hybrid electric vehicle with battery, plug-in hybrid electric vehicle, pure electric vehicle) to engender and increasing, the carbon emission amount of elec. vehicle is less than traditional combustion engine automobile, and the carbon emission of pure electric vehicle is even zero, and have the advantages that energy conversion efficiency is high, this makes people electronlmobil is considered as the following important selection substituting diesel locomotive.
In electronlmobil, small-sized electric vehicle, or battery-operated motor cycle is cheap and be beneficial to popularization due to it, and in a lot of city, battery-operated motor cycle (or being called electric two-wheel vehicle) has become the main vehicle.On these small-sized electric vehicles or battery motor bike; usual driver needs the remaining driving mileage accurately understanding vehicle; on comparatively advanced vehicle; on the control read out instrument (or claiming meter panel of motor vehicle) of vehicle, also need the carrying capacity (SOC) understanding power brick in time to carry out Power Limitation to power brick or to protect to improve battery or serviceability.Therefore battery management system (BMS) needs to estimate the SOC of battery and the SOC value of estimation is transferred to and controls read out instrument (or meter panel of motor vehicle) shows.
At present, generally there are two kinds of modes to carry out the display of SOC, first kind of way is: on BMS and wagon control read out instrument, be provided with PORT COM, by being connected with the CAN that PORT COM is connected between BMS and wagon control read out instrument, main control chip (IC) in BMS is according to the power brick signal collected and built-in algorithm, after calculating real-time SOC signal, this signal is sent to wagon control read out instrument by CAN in digital mode.
The second way is: directly by the voltage signal of power brick by wire transmission to control read out instrument (namely control read out instrument directly and the both positive and negative polarity of power brick be electrically connected), height according to power brick voltage is estimated with the rough correspondences of SOC height, and carries out the display of SOC according to this.
For above-mentioned first kind of way, precision is higher, but requires BMS and control read out instrument is all provided with PORT COM, in relatively simple electric automobiles (such as electric two-wheel vehicle, electro-tricycle, battery-operated motor cycle), the structure of this method is comparatively complicated, and cost is also higher.
For the above-mentioned second way, although its structure is comparatively simple relative to first kind of way, its relation depending on power brick voltage and SOC draws SOC value to carry out estimation, and precision is lower, the SOC value error provided under many circumstances is comparatively large, is difficult to meet actual use needs.In addition, due in this approach, the voltage signal of power brick is either directly output to control read out instrument, voltage (generally at more than the 48V) mouth of power brick is equivalent to extend to driver's operation interface (wagon control read out instrument), so certain danger is created to driver, particularly all the more so when having an accident (such as colliding).
[summary of the invention]
The present invention, just for the problems referred to above, provides a kind of battery pack charge quantity display method for elec. vehicle, adopts in this way, has structure simple, with low cost, the feature that precision is higher and safe.
In order to achieve the above object, technical scheme of the present invention is:
A kind of for the battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
Here elec. vehicle includes but not limited to electronlmobil, battery-operated motor cycle.
As preferred embodiment, in described step (11), battery pack charge quantity convert information is analog voltage signal by described main control chip foundation one to one linear relationship.
As preferred embodiment, in described step (11), the scope of described analog voltage signal is 0 ~ 5 volt.
As preferred embodiment, in described step (12), described main control chip exports analog voltage signal by two pins.
As preferred embodiment, analog voltage output circuit is also comprised in described battery management system, described analog voltage output circuit is connected with described main control chip, and described analog voltage signal transfers to analog voltage output circuit from main control chip and transfers to the control read out instrument of elec. vehicle via analog voltage output circuit.
Due to main control chip the accurate SOC signal calculated is converted into analog voltage signal after export control read out instrument again to, make BMS and control can directly be connected with wire between read out instrument, without the need to arranging PORT COM again in BMS and control read out instrument, also without the need to adopting CAN to be connected, the structure of such whole system is simple, with low cost; In addition, because described analog voltage signal is transformed by the SOC signal accurately calculated, so this analog voltage signal also has the high feature of precision, control read out instrument can demonstrate accurate SOC.Finally, for the mode of conventional art described in background technology 2, in the manner in which, the voltage output end of power brick is not directly connected with driver's operation interface, and system has safer feature.
[detailed description of the invention]
Embodiment 1:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
Embodiment 2:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, described battery pack charge quantity display method
Also comprise the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
In described step (11), battery pack charge quantity convert information is analog voltage signal by described main control chip foundation one to one linear relationship, and in the present embodiment, described linear relationship one to one meets mathematic curve Y=X.
Embodiment 3:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
In described step (11), the scope of described analog voltage signal is 0 ~ 5 volt.
Embodiment 4:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
In described step (11), battery pack charge quantity convert information is analog voltage signal by described main control chip foundation one to one linear relationship, and the scope of described analog voltage signal is 0 ~ 5 volt.In the present embodiment, described linear relationship one to one meets mathematic curve Y=X.
Embodiment 5:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
In described step (11), the scope of described analog voltage signal is 0 ~ 5 volt.
In described step (12), described main control chip exports analog voltage signal by two pins.
Embodiment 6:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
In described step (11), battery pack charge quantity convert information is analog voltage signal by described main control chip foundation one to one linear relationship, and the scope of described analog voltage signal is 0 ~ 5 volt.In the present embodiment, described linear relationship one to one meets mathematic curve Y=X.
In described step (12), described main control chip exports analog voltage signal by two pins.
Embodiment 7:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
In described step (11), the scope of described analog voltage signal is 0 ~ 5 volt.
Analog voltage output circuit is also comprised in described battery management system, described analog voltage output circuit is connected with described main control chip, and described analog voltage signal transfers to analog voltage output circuit from main control chip and transfers to the control read out instrument of elec. vehicle via analog voltage output circuit.
Embodiment 8:
A kind of battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, and described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
In described step (11), battery pack charge quantity convert information is analog voltage signal by described main control chip foundation one to one linear relationship, and the scope of described analog voltage signal is 0 ~ 5 volt.In the present embodiment, described linear relationship one to one meets mathematic curve Y=X.
Analog voltage output circuit is also comprised in described battery management system, described analog voltage output circuit is connected with described main control chip, and described analog voltage signal transfers to analog voltage output circuit from main control chip and transfers to the control read out instrument of elec. vehicle via analog voltage output circuit.
Protection scope of the present invention is not limited in embodiment, and all changes of doing under spirit of the present invention and change, all should drop within scope.
Claims (5)
1. the battery pack charge quantity display method for elec. vehicle, described power brick comprises battery management system, described battery management system is connected with the control read out instrument of elec. vehicle, main control chip is comprised in described battery management system, described main control chip can calculate the carrying capacity of power brick in real time, it is characterized in that: described battery pack charge quantity display method also comprises the steps:
(11): real-time battery pack charge quantity convert information is analog voltage signal by described main control chip;
(12): described analog voltage signal via wire transmission to the control read out instrument of elec. vehicle.
2. the battery pack charge quantity display method of elec. vehicle as claimed in claim 1, is characterized in that:
In described step (11), battery pack charge quantity convert information is analog voltage signal by described main control chip foundation one to one linear relationship.
3. the battery pack charge quantity display method of elec. vehicle as claimed in claim 1 or 2, is characterized in that:
In described step (11), the scope of described analog voltage signal is 0 ~ 5 volt.
4. the battery pack charge quantity display method of elec. vehicle as claimed in claim 3, is characterized in that: in described step (12), and described main control chip exports analog voltage signal by two pins.
5. the battery pack charge quantity display method of elec. vehicle as claimed in claim 3, it is characterized in that: in described battery management system, also comprise analog voltage output circuit, described analog voltage output circuit is connected with described main control chip, and described analog voltage signal transfers to analog voltage output circuit from main control chip and transfers to the control read out instrument of elec. vehicle via analog voltage output circuit.
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| CN201210150948.6A CN103419647B (en) | 2012-05-14 | 2012-05-14 | For the battery pack charge quantity display method of elec. vehicle |
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| CN201210150948.6A CN103419647B (en) | 2012-05-14 | 2012-05-14 | For the battery pack charge quantity display method of elec. vehicle |
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| CN103419647A CN103419647A (en) | 2013-12-04 |
| CN103419647B true CN103419647B (en) | 2015-07-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6275042B1 (en) * | 1999-10-01 | 2001-08-14 | Wei-Jen Tsai | Equipment for testing battery of electric device |
| CN1877473A (en) * | 2006-06-30 | 2006-12-13 | 中国南车集团株洲电力机车研究所 | Power battery management system for electric vehicle |
| CN201819977U (en) * | 2010-03-12 | 2011-05-04 | 北京工业大学 | Power battery test system |
| CN202177690U (en) * | 2011-06-30 | 2012-03-28 | 大连大工安道船舶技术有限责任公司 | Electric automobile storage battery SOC estimation apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06140081A (en) * | 1992-10-23 | 1994-05-20 | Sony Corp | Battery residual capacity display device |
| JP4286842B2 (en) * | 2005-03-30 | 2009-07-01 | 株式会社ピーシーエヌ | In-vehicle battery management device |
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2012
- 2012-05-14 CN CN201210150948.6A patent/CN103419647B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6275042B1 (en) * | 1999-10-01 | 2001-08-14 | Wei-Jen Tsai | Equipment for testing battery of electric device |
| CN1877473A (en) * | 2006-06-30 | 2006-12-13 | 中国南车集团株洲电力机车研究所 | Power battery management system for electric vehicle |
| CN201819977U (en) * | 2010-03-12 | 2011-05-04 | 北京工业大学 | Power battery test system |
| CN202177690U (en) * | 2011-06-30 | 2012-03-28 | 大连大工安道船舶技术有限责任公司 | Electric automobile storage battery SOC estimation apparatus |
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Address after: 313000 Huzhou economic and Technological Development Zone, Zhejiang, Hung Fung Road, No. 2198 Patentee after: Microvast Power System (Huzhou) Co., Ltd. Address before: 313000 Zhejiang Province, Huzhou City Road No. 1555 sunny Industrial Science and Technology Park 1 Patentee before: Microvast Power System (Huzhou) Co., Ltd. |