CN115648942A - New energy automobile lithium battery charging and discharging management system and method - Google Patents
New energy automobile lithium battery charging and discharging management system and method Download PDFInfo
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- CN115648942A CN115648942A CN202211240659.5A CN202211240659A CN115648942A CN 115648942 A CN115648942 A CN 115648942A CN 202211240659 A CN202211240659 A CN 202211240659A CN 115648942 A CN115648942 A CN 115648942A
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Abstract
The invention belongs to the technical field of new energy automobile lithium batteries, and discloses a new energy automobile lithium battery charging and discharging management system which comprises a control unit, a display unit, a wireless communication unit, new energy automobile electrical equipment, a battery pack and an acquisition unit. The method and the device aim at detecting the lithium battery discharge management of the new energy automobile, when the new energy automobile runs on a road, the lithium battery discharge process of the new energy automobile is detected, the main factors are collected and analyzed according to the preset main factors of the lithium battery discharge amount when the new energy automobile runs on the road, when the power consumption is more than a preset value by 10%, the automobile equipment is detected by the monitoring unit, whether the equipment in the automobile meets the lithium battery discharge amount or not is judged, a warning is not sent when the equipment in the automobile meets the lithium battery discharge amount, a warning is sent when the equipment in the automobile is abnormal, a driver is reminded of needing to overhaul and maintain the equipment, and the purpose of good lithium battery discharge detection effect is achieved.
Description
Technical Field
The invention belongs to the technical field of new energy automobile lithium batteries, and particularly relates to a new energy automobile lithium battery charging and discharging management system and method.
Background
With the improvement of the technology and the establishment of the concept of sustainable development, industrial and domestic organic wastes which are always regarded as garbage in the past are recognized again and are deeply researched, developed and utilized as a substance for resource utilization of energy, the new energy automobile is taken as the mainstream development trend at present and replaces a fuel vehicle, the existing new energy automobile mostly adopts a lithium battery driving motor to provide power for the automobile, and the actual endurance of the lithium battery of the new energy automobile has deviation because the capacity of the lithium battery is limited and is influenced by the outside, so that the actual endurance of the lithium battery of the new energy automobile is inaccurate to calculate or display the actual endurance of the lithium battery of the new energy automobile, the endurance anxiety of a driver is caused, and the purchase desire of the new energy automobile is reduced.
Disclosure of Invention
The invention provides a new energy automobile lithium battery charging and discharging management system and a method, which aim at the lithium battery discharging management of a new energy automobile, detect the discharging process of the lithium battery of the new energy automobile when the new energy automobile runs on a road, collect and analyze main factors according to preset discharge capacity of the lithium battery of the new energy automobile running to obtain a set factor value, collect and analyze influence factors of the actual running discharge capacity of the lithium battery of the new energy automobile to obtain an actual value, compare the set value with the actual value, detect automobile equipment by a monitoring unit when the power consumption of the new energy automobile is greater than 10% of a preset value in the actual running process, judge whether the equipment in the automobile meets the discharge capacity of the lithium battery according to detection data, do not send out a warning when the discharge capacity meets the requirement, send out a warning when an abnormity is detected, remind a driver of overhauling and maintaining the equipment to achieve the advantage of good lithium battery discharging detection effect.
In order to achieve the purpose, the invention provides the following technical scheme: a new energy automobile lithium battery charging and discharging management system comprises a control unit, a display unit, a wireless communication unit, new energy automobile electrical equipment, a battery pack and an acquisition unit; the control unit is in electrical signal connection with the display unit, the control unit is in electrical signal connection with the wireless communication unit, the control unit is in electrical signal connection with the new energy automobile electrical equipment, the control unit is in electrical signal connection with the battery pack, and the control unit is in electrical signal connection with the acquisition unit;
the control unit comprises but is not limited to a data collection unit, a data processing unit, a data analysis and judgment unit and a data storage unit;
the display unit comprises but is not limited to a display screen unit, a touch unit and a warning unit;
the wireless communication unit is used for GPS positioning, data receiving, data sending and voice;
the new energy automobile electrical equipment comprises but is not limited to a vehicle-mounted air conditioner, a vehicle-mounted radio, a vehicle-mounted mobile power supply and vehicle-mounted display equipment;
the battery pack and the acquisition unit comprise but are not limited to a lithium battery pack, video equipment, a wind speed monitor and a speedometer.
The application also provides a new energy automobile lithium battery charging and discharging management method, which comprises the following specific steps:
s1: setting main influence factors of power consumption of a lithium battery of the new energy automobile during running, and performing data analysis on various factors to obtain the set value of the power consumption of the lithium battery of the new energy automobile;
s2: acquiring actual power consumption of a lithium battery of a new energy automobile running speed to obtain actual power consumption;
s3: judging whether the lithium battery discharges normally or not according to the comparison between the power consumption in the set state and the actual power consumption;
s31: if the actual discharge capacity variation amplitude is smaller than 10% of the discharge capacity of the set factor, the lithium battery of the new energy automobile works normally;
s32: if the actual discharge capacity variation amplitude is larger than 10% of the discharge capacity of the set factor, monitoring the new energy lithium battery through a detection module;
s321: monitoring whether other power consumption equipment works in the new energy automobile, detecting the road condition and the wind speed by the acquisition module and analyzing the data to determine whether the actual discharge capacity is met;
s322: if the actual discharge capacity variation is larger than the discharge capacity with the set factor, the warning module warns the discharge capacity passing through;
s4: the lithium battery of the new energy automobile is not abnormal or is monitored normally, the lithium battery works according to a preset period, if the actual discharge capacity is similar to the set discharge capacity, the lithium battery of the equipment is normal, and if not, secondary maintenance is carried out.
In the above technical solution, preferably, the main factors influencing the discharge capacity of the lithium battery of the new energy vehicle in s1 include: the influence of wind resistance, engine and friction acting, road pavement condition, the speed of the new energy automobile and power consumption equipment in the automobile when the new energy lithium battery automobile runs.
In the above technical scheme, preferably, the mathematical model of the new energy automobile driving wind resistance influence factor is as follows:
f friction = mgu;
p = Y wind V + F friction V;
y-refers to wind resistance;
p-wind resistance coefficient;
v-running speed.
In the above technical solution, preferably, the mathematical model of the influence factors of the engine and the frictional force acting is:
W＝(Y+F)S＝(ma+mgu)S；
P＝W/T；
m-means the total mass;
g-refers to gravitational acceleration;
u-refers to the rolling friction coefficient.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the steps of detecting the discharge management of a lithium battery of a new energy automobile, detecting the discharge process of the lithium battery of the new energy automobile when the new energy automobile runs on a road, collecting and analyzing main factors according to the preset discharge amount of the lithium battery of the new energy automobile running, obtaining a set factor value, collecting and analyzing influence factors of the actual running discharge amount of the lithium battery of the new energy automobile according to the set factor value, comparing the set factor value with the actual value, detecting automobile equipment by a monitoring unit when the power consumption of the new energy automobile in the actual running is greater than 10% of a preset value, judging whether the equipment in the automobile meets the discharge amount of the lithium battery or not according with the detection data, not sending a warning when the equipment meets the requirement, sending a warning when abnormality is detected, reminding a driver of needing to overhaul and maintain the equipment, and achieving the purpose of good lithium battery discharge detection effect.
Drawings
FIG. 1 is a schematic diagram of the structural work flow of the present invention;
FIG. 2 is a schematic view of a discharge capacity detection process of a lithium battery with the structure of the present invention;
fig. 3 is a schematic diagram of the characteristics of a lithium battery of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the present invention provides a new energy vehicle lithium battery charging and discharging management system, which includes a control unit, a display unit, a wireless communication unit, new energy vehicle electrical equipment, a battery pack, and an acquisition unit; the control unit is in electrical signal connection with the display unit, the control unit is in electrical signal connection with the wireless communication unit, the control unit is in electrical signal connection with electrical equipment of the new energy automobile, the control unit is in electrical signal connection with the battery pack, and the control unit is in electrical signal connection with the acquisition unit;
the control unit comprises but is not limited to a data collection unit, a data processing unit, a data analysis and judgment unit and a data storage unit;
the display unit comprises but is not limited to a display screen unit, a touch unit and a warning unit;
the wireless communication unit is used for GPS positioning, data receiving, data sending and voice;
the new energy automobile electrical equipment comprises but is not limited to a vehicle-mounted air conditioner, a vehicle-mounted radio, a vehicle-mounted mobile power supply and vehicle-mounted display equipment;
the battery pack and the acquisition unit comprise but are not limited to a lithium battery pack, video equipment, a wind speed monitor and a speedometer.
The application also provides a new energy automobile lithium battery charging and discharging management method, which comprises the following specific steps:
s1: setting main influence factors of power consumption of a lithium battery of the new energy automobile during running, and performing data analysis on various factors to obtain the set value of the power consumption of the lithium battery of the new energy automobile;
s2: acquiring actual power consumption of a lithium battery of a new energy automobile running speed to obtain actual power consumption;
s3: judging whether the lithium battery discharges normally or not according to the comparison between the power consumption in the set state and the actual power consumption;
s31: if the actual discharge capacity variation amplitude is smaller than 10% of the discharge capacity of the set factor, the lithium battery of the new energy automobile works normally;
s32: if the actual discharge capacity variation amplitude is larger than 10% of the discharge capacity of the set factor, monitoring the new energy lithium battery through a detection module;
s321: monitoring whether other power consumption equipment works in the new energy automobile, detecting the road condition and the wind speed by the acquisition module and analyzing the data to determine whether the actual discharge capacity is met;
s322: if the actual discharge capacity variation fluctuation is larger than the discharge capacity of the set factor, warning the discharge capacity passing through the warning module;
s4: the new energy automobile lithium battery is not abnormal or is monitored normally, the new energy automobile lithium battery works according to a preset period, if the actual discharge capacity is similar to the set discharge capacity, the equipment lithium battery is normal, and if the actual discharge capacity is not similar to the set discharge capacity, secondary maintenance is performed;
the utility model provides a detect to new energy automobile lithium battery management of discharging, when new energy automobile traveles on the road, detect new energy automobile lithium battery discharge process, according to the main factor of preset new energy automobile lithium battery discharge capacity that traveles, collect the analysis to the main factor, obtain the set factor value, collect and analyze according to the influence factor to new energy automobile lithium battery actual travel discharge capacity, obtain the actual value, compare set value and actual value, new energy automobile is in actual travel, when power consumption is greater than the predetermined value 10%, will detect the automotive equipment by the monitoring unit, judge through the detected data, whether equipment accords with lithium battery discharge capacity in the car, will not send the warning when according with, will send the warning when detecting out the anomaly, remind the navigating mate, need overhaul and maintain it, when actual power consumption is greater than set value power consumption 10%, will work normally, do not send the warning.
The main factors influencing the discharge capacity of the lithium battery of the new energy automobile in s1 comprise: the influence of wind resistance, engine and friction acting, road pavement condition, the speed of the new energy automobile and power consumption equipment in the automobile when the new energy lithium battery automobile runs;
research shows that the fuel economy can be improved by 3% when the wind resistance coefficient is reduced by 10%; in other words, the endurance mileage can be increased by about 3% for a new energy automobile when the wind resistance coefficient is reduced by 10%; for pure electric vehicles, compared with common fuel vehicles, the pure electric vehicles have the inherent advantages in the aspect of improving the wind resistance coefficient;
comparing the constant-current discharge electrical performance of lithium batteries with different multiplying powers:
| electric current | Starting voltage (V) | Capacity (Ah) | Energy (Wh) |
| 0.5C | 97.863 | 22.867 | 1791.866 |
| 0.8C | 96.643 | 33.576 | 1752.161 |
| 2C | 96.216 | 33.532 | 1720.168 |
| 5C | 93.01 | 33.16 | 1500.06 |
As can be seen from the above table: as the discharge rate increases, the starting voltage of the battery module decreases, and the discharge capacity and the discharge energy both decrease. The discharge capacity was 22.867Ah at 0.5C and the discharge capacity of the battery module was reduced to 33.16Ah at 5C, since the capacity of the battery was attenuated at a large current, the temperature of the battery module increased and the discharge capacity decreased as the discharge rate increased.
Comparing the electrical properties of lithium battery discharge under different powers:
| power (W) | 1000 | 2000 | 2500 | 5000 |
| Starting voltage (V) | 174.66 | 173.52 | 172.45 | 169.99 |
| Capacity (Ah) | 44.541 | 44.984 | 44.852 | 44.221 |
| Energy (Wh) | 3003.717 | 2889.513 | 2837.625 | 2646.134 |
As can be seen from the above table: the starting voltage of the battery module is reduced along with the increase of the power, the discharge capacity and the discharge energy are reduced, the discharge capacity is 44.541Ah when the discharge power is 1000W, the discharge capacity of the battery module is reduced to 44.221Ah when the discharge power is 5000W, and the discharge capacity of the battery module is reduced along with the increase of the discharge power.
Wherein, the mathematical model of new energy automobile windage influence factor of traveling is:
f friction = mgu;
p = Y wind/V + F friction V
Y-refers to wind resistance;
p-wind resistance coefficient;
v-running speed.
The mathematical model of the influence factors of the engine and the friction force doing work is as follows:
W＝(Y+F)S＝(ma+mgu)S；
P＝W/T；
m-means the total mass;
g-refers to gravitational acceleration;
u-refers to the rolling friction coefficient;
through the formula and the parameters of the new energy automobile, the discharge loss of the wind resistance of the new energy automobile to the lithium battery of the new energy automobile when the new energy automobile runs under different working conditions can be obtained, and the discharge of the lithium battery of the new energy automobile can be accurately detected.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a new energy automobile lithium cell charge-discharge management system which characterized in that: the lithium battery management system comprises a control unit, a display unit, a wireless communication unit, new energy automobile electrical equipment, a battery pack and an acquisition unit; the control unit is in electrical signal connection with the display unit, the control unit is in electrical signal connection with the wireless communication unit, the control unit is in electrical signal connection with the new energy automobile electrical equipment, the control unit is in electrical signal connection with the battery pack, and the control unit is in electrical signal connection with the acquisition unit;
the control unit comprises but is not limited to a data collection unit, a data processing unit, a data analysis and judgment unit and a data storage unit;
the display unit comprises but is not limited to a display screen unit, a touch unit and a warning unit;
the wireless communication unit is used for GPS positioning, data receiving, data sending and voice;
the new energy automobile electrical equipment comprises but is not limited to a vehicle-mounted air conditioner, a vehicle-mounted radio, a vehicle-mounted mobile power supply and vehicle-mounted display equipment;
the battery pack and the acquisition unit comprise but are not limited to a lithium battery pack, video equipment, a wind speed monitor and a speedometer.
2. The charge and discharge management method for the lithium battery of the new energy automobile according to claim 1, characterized by comprising the following steps: the method comprises the following specific steps:
s1: setting main influence factors of power consumption of a lithium battery of the new energy automobile during running, and performing data analysis on various factors to obtain the set value of the power consumption of the lithium battery of the new energy automobile;
s2: acquiring actual power consumption of a lithium battery of a new energy automobile at a running speed to obtain actual power consumption;
s3: judging whether the lithium battery discharges normally or not according to the comparison between the power consumption in the set state and the actual power consumption;
s31: if the actual discharge capacity variation amplitude is smaller than 10% of the discharge capacity under the set factor, the lithium battery of the new energy automobile works normally;
s32: if the actual discharge capacity variation amplitude is larger than 10% of the discharge capacity of the set factor, monitoring the new energy lithium battery through a detection module;
s321: monitoring whether other power consumption equipment works in the new energy automobile, detecting the road condition and the wind speed by the acquisition module and analyzing the data to determine whether the actual discharge capacity is met;
s322: if the actual discharge capacity variation is larger than the discharge capacity with the set factor, the warning module warns the discharge capacity passing through;
s4: the lithium battery of the new energy automobile is not abnormal or is monitored normally, the lithium battery of the new energy automobile works according to a preset period, if the actual discharge capacity is similar to the set discharge capacity, the lithium battery of the new energy automobile is normal, and if the actual discharge capacity is not similar to the set discharge capacity, the lithium battery of the new energy automobile is overhauled secondarily.
3. The charge and discharge management method for the lithium battery of the new energy automobile according to claim 2, characterized by comprising the following steps: the main factors influencing the discharge capacity of the lithium battery of the new energy automobile in s1 comprise: the influence of wind resistance, engine and friction acting, road pavement condition, the speed of the new energy automobile and power consumption equipment in the automobile when the new energy lithium battery automobile runs.
4. The charge and discharge management method for the lithium battery of the new energy automobile according to claim 2, characterized by comprising the following steps: the mathematical model of the new energy automobile driving wind resistance influence factor is as follows:
f friction = mgu;
p = Y Feng Tv + F Friction Tv;
y-refers to wind resistance;
p-wind resistance coefficient;
v is the running speed.
5. The charge and discharge management method for the lithium battery of the new energy automobile according to claim 2, characterized by comprising the following steps: the mathematical model of the influence factors of the engine and the friction force doing work is as follows:
W＝(Y+F)S＝(ma+mgu)S；
P＝W/T；
m-means the total mass;
g-refers to gravitational acceleration;
u-refers to the rolling friction coefficient.
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| CN202211240659.5A CN115648942A (en) | 2022-10-11 | 2022-10-11 | New energy automobile lithium battery charging and discharging management system and method |
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| CN202211240659.5A CN115648942A (en) | 2022-10-11 | 2022-10-11 | New energy automobile lithium battery charging and discharging management system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117207905A (en) * | 2023-11-09 | 2023-12-12 | 深圳市金威源科技股份有限公司 | Power supply operation and maintenance method, system and storage medium of new energy automobile |
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2022
- 2022-10-11 CN CN202211240659.5A patent/CN115648942A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117207905A (en) * | 2023-11-09 | 2023-12-12 | 深圳市金威源科技股份有限公司 | Power supply operation and maintenance method, system and storage medium of new energy automobile |
| CN117207905B (en) * | 2023-11-09 | 2024-01-12 | 深圳市金威源科技股份有限公司 | Power supply operation and maintenance method, system and storage medium of new energy automobile |
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Application publication date: 20230131 |
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