CN117465299A - Ice melting method and system for battery and vehicle - Google Patents
Ice melting method and system for battery and vehicle Download PDFInfo
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- CN117465299A CN117465299A CN202311473658.XA CN202311473658A CN117465299A CN 117465299 A CN117465299 A CN 117465299A CN 202311473658 A CN202311473658 A CN 202311473658A CN 117465299 A CN117465299 A CN 117465299A
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- 238000002844 melting Methods 0.000 title claims abstract description 178
- 230000008018 melting Effects 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 91
- 230000008014 freezing Effects 0.000 claims abstract description 21
- 238000007710 freezing Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims description 25
- 230000007613 environmental effect Effects 0.000 claims description 19
- 239000002918 waste heat Substances 0.000 claims description 12
- 230000003993 interaction Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000005485 electric heating Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 description 17
- 230000001276 controlling effect Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000002826 coolant Substances 0.000 description 1
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- 238000004544 sputter deposition Methods 0.000 description 1
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Classifications
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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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
- B60S5/06—Supplying batteries to, or removing batteries from, 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/60—Navigation input
- B60L2240/66—Ambient conditions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a method, a system and a vehicle for melting ice of a battery, wherein the method comprises the steps of acquiring an icing thickness value of the battery of the vehicle through an icing sensor based on a target acquisition frequency; judging whether a plurality of icing thickness values meet a preset threshold value or not; if at least one of the icing thickness values meets a preset threshold value, controlling a switch of an ice melting device of the vehicle to be closed; determining a freezing point of the vehicle battery based on a position of an icing sensor corresponding to an icing thickness value satisfying a preset threshold; and controlling the corresponding ice melting and heating units to start ice melting based on the freezing point. According to the method and the device, the icing position of the power exchange mechanism is determined by using the icing sensor, the real-time electric heating of the icing position is carried out to melt ice before the vehicle enters the power exchange station, and a vehicle owner does not need to wait for deicing after reaching the power exchange station, so that the problem that the conventional power exchange technology needs to deicing for a long time after the vehicle reaches the charging station, the power exchange efficiency is low, and the experience of the vehicle owner is poor is effectively improved, and the experience of the power exchange efficiency and the vehicle owner is effectively improved.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a battery ice melting method and system and a vehicle.
Background
With the development of battery technology and the application of hybrid electric vehicle technology, the problem of insufficient endurance mileage is primarily solved, but the problem of charging speed still exists, the fast charging technology has an influence on the service life of the battery while charging is fast, and the slow charging technology charges too slowly, so the power conversion technology is greatly developed.
The existing power conversion technology is characterized in that when a user encounters rainy and snowy weather, a snow-water mixture on a road surface is brought up by a tire, sputtering is carried on a chassis, a battery power conversion mechanism is difficult to separate from a vehicle body floor due to icing, and long-time deicing is required to be carried out through a heating or physical cutting method after the vehicle reaches a charging station, so that power conversion efficiency is low, and experience of a vehicle owner is poor.
Disclosure of Invention
The invention provides a battery ice melting method, a battery ice melting system and a vehicle, and aims to solve the problems that the existing electricity changing technology needs to be used for removing ice for a long time through a heating or physical cutting method after the vehicle arrives at a charging station, so that electricity changing efficiency is low and experience of a vehicle owner is poor.
According to an aspect of the present invention, there is provided a method of ice-melting a battery, including:
acquiring an icing thickness value of a vehicle battery through icing sensors based on a target acquisition frequency, wherein the number of the icing sensors is multiple, and the icing sensors are arranged around the vehicle battery and are in one-to-one correspondence with the locking mechanisms of the vehicle battery;
judging whether a plurality of icing thickness values meet a preset threshold value or not;
if at least one of the icing thickness values meets the preset threshold value, controlling a switch of an ice melting device of the vehicle to be closed;
determining an icing point of the vehicle battery based on a position of the icing sensor corresponding to the icing thickness value satisfying the preset threshold;
and controlling the corresponding ice melting and heating units to start ice melting based on the ice melting point, wherein one ice melting and heating unit is only correspondingly arranged at one ice melting sensor.
Optionally, before the acquiring the icing thickness value of the vehicle battery by the icing sensor, the ice melting method further includes:
the method comprises the steps that icing parameters of a vehicle battery are obtained through a preset sensor, wherein the icing parameters comprise an environmental temperature value and a rain and snow intensity value of an environment where a vehicle is located, and the preset sensor comprises a temperature sensor and a rain and snow sensor which are arranged on the vehicle body;
judging whether the icing parameter meets a preset parameter threshold;
if so, determining the target acquisition frequency of the icing thickness value based on the rain and snow intensity value, wherein the target acquisition frequency changes in real time along with the change of the rain and snow intensity value.
Optionally, the determining whether the icing parameter meets a preset parameter threshold includes:
judging whether the environmental temperature value is smaller than a preset temperature threshold value or not;
and if the environmental temperature is smaller than the preset temperature threshold value, acquiring the rain and snow intensity value, and executing the step of determining the target acquisition frequency of the icing thickness value based on the rain and snow intensity value.
Optionally, the determining the target acquisition frequency of the icing thickness value based on the rain and snow intensity value includes:
judging the relation between the rain and snow intensity value and a preset intensity threshold, wherein the preset intensity threshold comprises a first preset intensity threshold and a second preset intensity threshold, and the second preset intensity threshold is larger than the first preset intensity threshold;
if the rain and snow intensity value is smaller than the first preset intensity threshold value, the target acquisition frequency is a first preset frequency, wherein the first preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the first preset intensity threshold value;
if the rain and snow intensity value is larger than the first preset intensity threshold value and smaller than the second preset intensity threshold value, the target acquisition frequency is a second preset frequency, wherein the second preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the first preset intensity threshold value and the second preset intensity threshold value;
and if the rain and snow intensity is greater than the second preset intensity threshold, the target acquisition frequency is a third preset frequency, wherein the third preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the second preset intensity threshold.
Optionally, after the ice melting and heating unit starts ice melting, the ice melting method further includes:
calculating the icing thickness change rate of the corresponding freezing point based on the icing thickness value of the corresponding icing point of each opened ice-melting heating unit;
determining ice melting power of the corresponding ice melting and heating unit according to the ice thickness change rate and the ice thickness value;
and adjusting the corresponding ice melting and heating units to work with the ice melting power.
Optionally, the ice melting method further includes:
receiving a heating start instruction, wherein the heating start instruction is input by a user through a man-machine interaction unit;
and based on the heating start instruction, executing the steps of determining the icing point of the vehicle battery and the subsequent steps based on the position of the icing sensor corresponding to the icing thickness value meeting the preset threshold.
According to another aspect of the present invention, there is provided an ice melting system of a battery including a plurality of ice formation sensors and a plurality of ice melting and heating units;
the plurality of icing sensors are arranged around the battery in a surrounding mode and are arranged in one-to-one correspondence with the plurality of locking mechanisms of the battery;
the ice melting and heating unit is arranged at the ice forming sensor in a unique corresponding mode;
the icing sensor is used for acquiring an icing thickness value of the vehicle battery at a target acquisition frequency;
the ice melting and heating unit is used for heating and melting ice at an ice point of the vehicle battery, wherein the position of the ice point is determined based on the ice thickness value.
Optionally, the ice melting system further includes: a power supply device and a plurality of first switches;
one of the first switches is connected in series only corresponding to one of the ice-melting and heating units;
the plurality of ice-melting and heating units are electrically connected with the power supply device and are connected in parallel;
the first switch is used for controlling the on-off of the ice-melting and heating units which are correspondingly connected in series;
the power supply device is used for supplying power to the ice-melting and heating unit corresponding to the closed first switch.
Optionally, the ice melting system further includes: the whole car heat management system and the thermoelectric generator;
the whole vehicle thermal management system is used for acquiring waste heat energy discharged by each power system of the vehicle;
the thermoelectric generator is connected with the whole vehicle thermal management system and the power supply device, converts the waste heat energy acquired by the whole vehicle thermal management system into electric energy, and stores the converted electric energy in the power supply device.
According to another aspect of the present invention, there is provided a vehicle including the ice melting system of the battery according to any one of the embodiments of the present invention.
The embodiment of the invention provides a method, a system and a vehicle for melting ice of a battery, which are used for acquiring an icing thickness value of the battery of the vehicle through an icing sensor based on a target acquisition frequency and judging whether a plurality of icing thickness values meet a preset threshold; if at least one of the icing thickness values meets a preset threshold value, controlling a switch of an ice melting device of the vehicle to be closed; determining a freezing point of the vehicle battery based on a position of an icing sensor corresponding to an icing thickness value satisfying a preset threshold; and controlling the corresponding ice melting and heating units to start ice melting based on the freezing point. According to the method, the icing position of the power battery power conversion mechanism is determined by using the icing sensor, the real-time electric heating of the icing position is carried out for deicing before the vehicle enters the power conversion station, a vehicle owner does not need to wait for deicing after reaching the power conversion station, the problem that the conventional power conversion technology needs to carry out long-time deicing through a heating or physical cutting method after the vehicle reaches the charging station, the power conversion efficiency is low, and the experience of the vehicle owner is poor is effectively improved, and the experience of the power conversion efficiency and the vehicle owner is effectively improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for melting ice of a battery according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for melting ice of a battery according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for melting ice of a battery according to an embodiment of the present invention;
FIG. 4 is a flow chart of another method for melting ice of a battery according to an embodiment of the present invention;
FIG. 5 is a flow chart of another method for melting ice of a battery according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an ice melting system of a battery according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a flowchart of a battery ice melting method according to an embodiment of the present invention, where the method may be performed by an ice melting system of a battery, the ice melting system of the battery may be implemented in hardware and/or software, and the ice melting system of the battery may be configured in any electronic device with a communication function.
Referring to fig. 1, the ice melting method includes:
s110, acquiring an icing thickness value of a vehicle battery through an icing sensor based on the target acquisition frequency.
The plurality of icing sensors are arranged around the vehicle battery and are in one-to-one correspondence with the plurality of locking mechanisms of the vehicle battery;
specifically, the whole vehicle controller collects an icing thickness value of a vehicle battery through an icing sensor according to a target collection frequency, the target collection frequency is related to a rain and snow intensity value, the higher the rain and snow intensity value is, the higher the target collection frequency is, the lower the rain and snow intensity value is, and the lower the target collection frequency is; when the intensity value of rain and snow is larger, the problem that the weather condition is easy to cause icing at the moment is described, so that the target acquisition frequency needs to be increased, the icing state can be perceived as soon as possible, the icing state near the battery can be judged more quickly according to the icing thickness value acquired according to the target acquisition frequency, and the corresponding ice melting power can be determined according to the icing thickness value, so that the ice melting and heating unit can melt ice of the battery based on the ice melting power.
S120, judging whether a plurality of icing thickness values meet a preset threshold value.
The preset threshold is preset according to weather conditions in which icing conditions easily occur in the actual use process of the vehicle, and 0 is used as the preset threshold in the embodiment of the invention.
Specifically, a plurality of icing thickness values measured by a plurality of icing sensors are respectively compared with a preset threshold value, whether each icing thickness value is larger than 0 is judged, if a certain icing thickness value is larger than 0, the position of the icing sensor corresponding to the icing thickness value is in an icing state, and if the icing thickness value is equal to 0, the position of each sensor is not in icing.
And S130, if at least one of the icing thickness values meets a preset threshold value, controlling a switch of an ice melting device of the vehicle to be closed.
Specifically, whether each icing thickness value meets a preset threshold value is judged respectively, if at least one of the icing thickness values meets the preset threshold value, that is, if at least one of the icing thickness values is larger than 0, the position of the icing sensor corresponding to the icing thickness value is indicated to be in an icing state, at the moment, the whole vehicle controller sends an instruction of closing a switch to the ice melting device, the switch of the ice melting device is closed, the ice melting device starts to work, and according to the position of the icing sensor corresponding to the icing thickness value meeting the preset threshold value, a circuit switch corresponding to the corresponding ice melting and heating unit is closed, and ice is melted at the icing position by the ice melting and heating unit.
And S140, determining the freezing point of the vehicle battery based on the position of the icing sensor corresponding to the icing thickness value meeting the preset threshold.
Specifically, since one icing sensor corresponds to one icing thickness value only, the icing sensor for measuring the icing thickness value can be determined by meeting the icing thickness value of the preset threshold, and then the position of the icing sensor is determined, and the position is used as a freezing point, so that the whole vehicle controller controls the corresponding ice melting and heating unit to melt ice on the freezing point.
S150, controlling the corresponding ice-melting and heating units to start ice melting based on the freezing point,
wherein, a ice melting and heating unit is arranged at a position of an icing sensor in a unique corresponding way.
Specifically, the vehicle controller closes the circuit switch of the corresponding ice melting and heating unit based on the ice point, so that the ice melting and heating unit is used for melting ice on the ice point, one ice melting and heating unit is arranged at one ice melting sensor.
According to the method, the icing position of the power battery power conversion mechanism is determined by using the icing sensor, the real-time electric heating of the icing position is carried out for deicing before the vehicle enters the power conversion station, a vehicle owner does not need to wait for deicing after reaching the power conversion station, the problem that the conventional power conversion technology needs to carry out long-time deicing through a heating or physical cutting method after the vehicle reaches the charging station, the power conversion efficiency is low, and the experience of the vehicle owner is poor is effectively improved, and the experience of the power conversion efficiency and the vehicle owner is effectively improved.
Fig. 2 is a flowchart of another method for melting ice of a battery according to an embodiment of the present invention, where the foregoing embodiments are further refined based on the foregoing embodiments. Referring to fig. 2, before S110, further includes:
s210, acquiring icing parameters of a vehicle battery through a preset sensor.
The icing parameter comprises an environmental temperature value and a rain and snow intensity value of the environment where the vehicle is located, and the preset sensor comprises a temperature sensor and a rain and snow sensor which are arranged on the vehicle body;
specifically, after the vehicle is started, the whole vehicle controller collects the rain and snow intensity value in real time through a rain and snow sensor arranged on the vehicle body, and collects the environmental temperature value through a temperature sensor arranged on the vehicle body.
S220, judging whether the icing parameter meets a preset parameter threshold;
the preset parameter threshold is preset according to weather conditions that ice conditions easily occur in the actual use process of the vehicle, and comprises a rainy and snowy weather preset threshold and an environment temperature preset threshold, and in the embodiment of the invention, the rainy and snowy weather preset threshold is set to 0 and 1,0 represents no rainy or snowy, and 1 represents rainy or snowy. The preset threshold value of the environmental temperature is set to be the temperature when water is near icing, for example, the preset threshold value of the environmental temperature is set to be 3 ℃, and the threshold value can be changed according to the difference of regional environments such as altitude, longitude and latitude and the like where the vehicle is located.
Specifically, it is determined whether the rain and snow intensity value is equal to 0, and when the rain and snow intensity value is equal to 0, it indicates that the weather is not in a raining or snowing state, and when the rain and snow intensity value is greater than 0, it indicates that the weather is in a raining or snowing state. Judging whether the environmental temperature value is smaller than the temperature when the ice is near, if the environmental temperature value is equal to or smaller than the temperature when the ice is near, indicating that the temperature is too low, and the ice thickness value is likely to be acquired by the whole vehicle controller, and if the environmental temperature value is larger than the temperature when the ice is near, indicating that the temperature can not reach the temperature when the ice is near, and not indicating that the ice is likely to be acquired by the whole vehicle controller.
And S230, if the value is met, determining the target acquisition frequency of the icing thickness value based on the rain and snow intensity value.
The target acquisition frequency changes in real time along with the change of the intensity value of the rain and the snow. The larger the rain and snow intensity value is, the higher the target acquisition frequency is, and the smaller the rain and snow intensity value is, the lower the target acquisition frequency is.
Specifically, the different intensity values of the rain and the snow indicate different degrees of freezing, the larger the intensity value of the rain and the snow indicates that the higher the possibility of freezing problems is, the higher the frequency of acquiring the icing thickness value is needed, the icing problems can be found as soon as possible, the smaller the intensity value of the rain and the snow indicates that the possibility of freezing problems is lower, and the frequency of acquiring the icing thickness value is reduced.
Fig. 3 is a flowchart of another method for melting ice of a battery according to an embodiment of the present invention, where the foregoing embodiments are further refined based on the foregoing embodiments. Referring to fig. 3, S220 specifically includes:
s310, judging whether the environmental temperature value is smaller than a preset temperature threshold value.
S320, if the environmental temperature is smaller than a preset temperature threshold value, acquiring a rain and snow intensity value, and determining a target acquisition frequency of the icing thickness value based on the rain and snow intensity value.
Specifically, the environmental temperature value is smaller than a preset temperature threshold value, which indicates that the environmental temperature is possibly frozen at a temperature lower than a temperature near freezing, and the rain and snow intensity value is equal to 0, which indicates that the weather is in a state of not raining or snowing, and the whole vehicle controller can collect the freezing thickness value only when the environmental temperature is smaller than the temperature near freezing and the weather is in a state of snowing or raining, and determines the frequency of collecting the freezing thickness value based on the rain and snow intensity value.
Fig. 4 is a flowchart of another method for melting ice of a battery according to an embodiment of the present invention, where the foregoing embodiments are further refined based on the foregoing embodiments. Referring to fig. 4, S230 specifically includes:
s410, judging the relation between the rain and snow intensity value and a preset intensity threshold value.
The preset intensity threshold comprises a first preset intensity threshold and a second preset intensity threshold, and the second preset intensity threshold is larger than the first preset intensity threshold;
s420, if the rain and snow intensity value is smaller than a first preset intensity threshold value, the target acquisition frequency is the first preset frequency.
The first preset intensity threshold value can be preset, and the first preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the first preset intensity threshold value; the first preset intensity threshold is set as S1, and it is determined whether the rain and snow intensity value is smaller than S1, and the acquisition frequency corresponding to the rain and snow intensity value smaller than S1 is used as the target acquisition frequency for acquiring the icing thickness value.
S430, if the rain and snow intensity value is larger than the first preset intensity threshold value and smaller than the second preset intensity threshold value, the target acquisition frequency is the second preset frequency.
The second preset intensity threshold value can be preset, and the second preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the first preset intensity threshold value and the second preset intensity threshold value;
the second preset intensity threshold is set as S2, and it is determined whether the rain and snow intensity value is between the first preset intensity threshold and the second preset intensity threshold, and the acquisition frequency corresponding to the rain and snow intensity value being between the first preset intensity threshold and the second preset intensity threshold is used as the target acquisition frequency for acquiring the icing thickness value.
S440, if the intensity of the rain and the snow is larger than the second preset intensity threshold value, the target acquisition frequency is a third preset frequency.
Wherein a third preset frequency is determined based on a magnitude relationship between the rain and snow intensity value and the second preset intensity threshold
According to the embodiment of the invention, the first preset intensity threshold value, the second preset intensity threshold value, the first preset frequency, the second preset frequency and the third preset frequency are set, on one hand, the target acquisition frequency is adjusted based on different rain and snow intensity values by comparing the magnitude relation between the rain and snow intensity values and the first preset intensity threshold value and the second preset intensity threshold value, when the rain and snow intensity values are larger, the problem that the weather condition is easy to cause icing at the moment is described, so that the target acquisition frequency needs to be increased, the icing state can be perceived as soon as possible, the icing state near the battery can be judged more quickly according to the icing thickness value acquired by the target acquisition frequency, and the corresponding ice melting power can be determined according to the icing thickness value, so that the ice melting and heating unit can melt ice on the battery based on the ice melting power, the energy distribution and utilization are optimized, and the energy is saved. On the other hand, the icing thickness value is acquired according to different preset frequencies, and the acquired icing thickness value is stored in a vehicle memory, so that the storage space can be reasonably saved.
Fig. 5 is a flowchart of another method for melting ice of a battery according to an embodiment of the present invention, where the foregoing embodiments are further refined based on the foregoing embodiments. Referring to fig. 5, after S150, further comprising:
s510, calculating the icing thickness change rate of the corresponding freezing point based on the icing thickness value of the corresponding icing point of each opened ice melting and heating unit.
Specifically, firstly, calculating the difference between the icing thickness value measured at the previous acquisition time and the icing thickness value measured at the later acquisition time, then calculating the time difference between the previous acquisition time and the later acquisition time, and finally, taking the difference between the icing thickness values at the two times and the time difference between the two times as a quotient to obtain the icing thickness change rate. Illustratively, the icing thickness value measured at time T1 is B1, the icing thickness value measured at time T2 is B2, and the difference between B2 and B1 divided by T2 to T1 is equal to the icing rate of change.
S520, determining the ice melting power of the corresponding ice melting and heating unit according to the ice thickness change rate and the ice thickness value.
Specifically, the icing change rate represents the icing speed, and can be a positive value, a zero value or a negative value, and when the icing change rate is a positive value, the larger the icing change rate is, the faster the icing speed is indicated, and the smaller the icing change rate is, the slower the icing speed is indicated. When the icing change rate is a negative value, the larger the icing change rate absolute value is, the faster the ice melting speed is, and the smaller the icing change rate absolute value is, the slower the ice melting speed is; and when the icing change rate is zero, the icing thickness is unchanged. The method specifically comprises the following cases: when the icing speed is positive, under the condition that the internal resistance value of the ice melting and heating unit is unchanged, the ice melting power of the ice melting and heating unit is increased by increasing the voltage value, and under the condition that the voltage value is unchanged, the internal resistance value of the ice melting and heating unit is reduced, so that the ice melting power of the ice melting and heating unit is increased;
when the icing thickness value is larger than a preset thickness threshold value, the voltage value is increased under the condition that the internal resistance value of the ice melting and heating unit is unchanged, so that the ice melting power of the ice melting and heating unit is increased, and the internal resistance value of the ice melting and heating unit can be reduced under the condition that the voltage value is unchanged, so that the ice melting power of the ice melting and heating unit is increased;
when the icing speed is a negative value, the voltage or resistance value is not required to be regulated, and the current ice melting power is kept to continuously melt ice.
When the icing thickness value is smaller than the preset thickness threshold value, the voltage value is reduced under the condition that the internal resistance value of the ice melting and heating unit is unchanged, so that the ice melting power of the ice melting and heating unit is reduced, and the internal resistance value of the ice melting and heating unit can be increased under the condition that the voltage value is unchanged, so that the ice melting power of the ice melting and heating unit is reduced.
And S530, adjusting the corresponding ice melting and heating units to work with ice melting power.
Specifically, the whole vehicle controller controls each ice melting and heating unit to melt ice on the freezing point by adjusting ice melting power, so that energy sources are effectively saved, ice melting efficiency is improved, and energy utilization is optimized.
Optionally, the ice melting method further comprises:
and receiving a heating start instruction, wherein the heating start instruction is input by a user through a man-machine interaction unit. Based on the heating-on instruction, S120 and subsequent steps are performed.
Specifically, when the weather is not in rainy or snowy weather, but the road surface still has snow or water accumulated, and the ambient temperature is less than the temperature when icing is near, the vehicle controller displays the ice information such as the ambient temperature value, the icing thickness value and the like through the human-computer interaction interface, for example, the human-computer interaction interface displays the following information, "whether the power conversion mechanism is possibly icing or not is ice melting and heating started? And the method is used for prompting a driver that the motor is possibly frozen, and the driver can judge whether the current battery state of charge has a power-changing requirement or not in a future period of time so as to determine whether to start ice melting and heating. After the ice melting is started, the ice melting device can automatically adjust the ice melting power of each ice melting and heating unit according to the ice melting speed.
Fig. 6 is a schematic structural diagram of an ice melting system of a battery according to an embodiment of the present invention, referring to fig. 6, the ice melting system includes a plurality of ice sensors 1 and a plurality of ice melting and heating units 2 (8 ice sensors 1 and 8 ice melting and heating units 2 are exemplarily provided in fig. 6, and reference numerals are given to only one of the ice sensors 1 and the ice melting and heating units 2);
the plurality of icing sensors 1 are circumferentially arranged around the battery 3 and are arranged in one-to-one correspondence with the plurality of locking mechanisms 4 of the battery 3 (8 locking mechanisms 4 are exemplarily arranged in fig. 6, and reference numerals are given to only one of the locking mechanisms 4);
the ice melting and heating unit 2 is arranged at the ice sensor 1 in a unique corresponding mode;
the icing sensor 1 is used for acquiring an icing thickness value of a vehicle battery at a target acquisition frequency; the icing sensor 1 may take other forms, including but not limited to a foreign object sensor, an ultrasonic radar, a camera, etc.
The ice-melting and heating unit 2 is used for heating and melting ice at an icing point of the vehicle battery 3, wherein the position of the icing point is determined based on the icing thickness value.
Optionally, the ice melting system further includes: a power supply device 5 and a plurality of first switches K1;
a first switch K1 is connected in series exclusively with respect to an ice-melting and heating unit 2 (a first switch K1 is shown in fig. 6 by way of example);
the plurality of ice-melting and heating units 2 are connected with the power supply device 5, and the plurality of ice-melting and heating units 2 are connected in parallel;
the first switch K1 is used for controlling the on-off of the ice-melting and heating units 2 which are correspondingly connected in series;
the power supply device 5 is used for supplying power to the ice melting and heating unit 2 corresponding to the closed first switch K1.
Optionally, the ice melting system further includes: a whole vehicle thermal management system 6 and a thermoelectric generator 7;
the whole vehicle thermal management system 6 is used for acquiring waste heat energy discharged by each power system of the vehicle;
the waste heat energy comprises battery waste heat, engine waste heat, electric drive waste heat and other system waste heat.
The thermoelectric generator 7 is connected with the whole vehicle thermal management system 6 and the power supply device 5, and the thermoelectric generator 7 converts waste heat energy acquired by the whole vehicle thermal management system 6 into electric energy and stores the converted electric energy in the power supply device 5.
According to the invention, through the arrangement of the thermoelectric generator 7, waste heat energy generated by various systems of the vehicle can be converted into electric energy for recycling, so that energy sources are saved, and the extra energy consumption of the electric-exchanging ice melting device is compensated.
With continued reference to fig. 6, the ice-melting system further includes: the power supply main circuit 8, the power supply main circuit 9 and the power supply sub-circuits 10 are connected with the power supply main circuits 8 and 9 through the power supply sub-circuits 10 for each ice melting and heating unit 2.
Referring to fig. 6, the icing sensor 1, the ice melting and heating unit 2, the power supply main circuits 8 and 9 and the power supply sub-circuit 10 together form an ice melting device 11, a second switch K2 is arranged between the power supply device 5 and the ice melting device 11, and a third switch K3 is arranged between the power supply device 5 and the thermoelectric generator 7. The power supply device 5 is provided with a voltage adjusting unit 12. The voltage regulating unit 12 is used for regulating the voltage of the power supply device 5, so as to control the ice melting power of the ice melting and heating unit 2, improve the ice melting efficiency and save energy.
The method for melting ice of the battery provided in the present application will be specifically described in one specific embodiment.
When the vehicle leaves the factory, the preset threshold value of the rain and snow intensity value S is 0, S1 and S2 … Sn, and the threshold value vehicle owner can change the threshold value automatically in a certain range through a human-computer interaction interface. The threshold value of the environmental temperature value T is [ T ], [ T ] is near the freezing point of water, for example [ T ] =3deg.C, and the threshold value owner can change the threshold value automatically in a certain range through a human-computer interaction interface.
After the vehicle is started, the vehicle controller acquires the rain and snow intensity value S in real time through the rain and snow sensor as required, acquires the environment temperature value T through the temperature sensor, acquires the icing thickness value B through the icing sensor, and calculates the icing thickness change rate delta.
Specifically, when s=0 or T > [ T ], it indicates that the weather is not in a raining or snowing state, the vehicle controller does not collect the icing thickness value B. When S is more than 0 and T is less than or equal to [ T ], the weather is in a raining or snowing state, and the whole vehicle controller controls the frequency fn for collecting the icing thickness value B according to the magnitude of the raining and snowing intensity value S, for example: when S < S1, f=f1, when S1 < S2, f=f2, and so on, the larger S is, the higher the acquisition frequency is. When the system detects that the icing thickness value B is more than 0, the whole vehicle controller gives an instruction to close the second switch K2, and closes the first switch K1 of the power supply sub-circuit 10 corresponding to a certain ice melting and heating unit 2 according to a specific ice freezing position, so that the ice melting device 11 automatically starts to work. When the power supply device 5 is powered off, the whole vehicle controller gives an instruction to close the third switch K3, and power is transmitted to the power supply device 5 through the thermoelectric generator 7.
The whole vehicle controller calculates the icing thickness change rate according to the icing thickness value B, judges the icing change rate, adjusts the output voltage of the power supply device 5 according to the icing thickness value B and the icing change rate, and adjusts the internal resistance value of each ice melting heating unit 2 at the same time, thereby achieving the purpose of controlling the heating power of each ice melting heating unit 2, effectively saving energy and optimizing energy utilization.
The outline shape of the ice melting device 11 can be determined according to the shape of the battery replacing mechanism assembly, and can be square (square), round (oval) or a closed special-shaped curve.
The ice melting and heating unit 2 adopts an electric heating mode, including but not limited to a resistance wire, an electric heating film, an electric heating sheet and the like, and the electric heating components can be positioned by high-temperature-resistant non-conductor materials (ceramics and the like).
The heat energy collection of the whole vehicle thermal management system 6 refers to the transmission and collection of heat energy generated in the operation of a power battery, a driving motor, an engine and other systems of a vehicle through mediums such as water, coolant, air and the like. And may be high temperature exhaust gas in an engine exhaust system, or the like.
The power supply device 5 may be integrated with a vehicle power battery, or may be a power battery body or a module integrated therein. The ice melting device can be controlled by a manual switch of a vehicle owner, the vehicle owner can judge whether to start ice detection of the electric switching mechanism according to the weather, the temperature and the road surface condition (whether snow exists, water exists or not) and judge whether to start the ice thickness value B of the electric switching mechanism according to the sensing of the vehicle owner, and after the ice thickness value B is started, the vehicle controller can acquire the ice thickness value B at a fixed frequency and automatically (or inquire the vehicle owner) start the ice melting and heating unit switch until the vehicle owner manually closes the ice detection.
The ice melting system of the battery provided by the embodiment of the invention can execute the ice melting method of the battery provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
The embodiment of the invention also provides a vehicle, which comprises the ice melting system of the battery provided by any embodiment of the invention.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method of ice melting for a battery, comprising:
acquiring an icing thickness value of a vehicle battery through icing sensors based on a target acquisition frequency, wherein the number of the icing sensors is multiple, and the icing sensors are arranged around the vehicle battery and are in one-to-one correspondence with the locking mechanisms of the vehicle battery;
judging whether a plurality of icing thickness values meet a preset threshold value or not;
if at least one of the icing thickness values meets the preset threshold value, controlling a switch of an ice melting device of the vehicle to be closed;
determining an icing point of the vehicle battery based on a position of the icing sensor corresponding to the icing thickness value satisfying the preset threshold;
and controlling the corresponding ice melting and heating units to start ice melting based on the ice melting point, wherein one ice melting and heating unit is only correspondingly arranged at one ice melting sensor.
2. The method of claim 1, wherein prior to the acquiring the icing thickness value of the vehicle battery by the icing sensor, the ice-melting method further comprises:
the method comprises the steps that icing parameters of a vehicle battery are obtained through a preset sensor, wherein the icing parameters comprise an environmental temperature value and a rain and snow intensity value of an environment where a vehicle is located, and the preset sensor comprises a temperature sensor and a rain and snow sensor which are arranged on the vehicle body;
judging whether the icing parameter meets a preset parameter threshold;
if so, determining the target acquisition frequency of the icing thickness value based on the rain and snow intensity value, wherein the target acquisition frequency changes in real time along with the change of the rain and snow intensity value.
3. The method of claim 2, wherein said determining whether the icing parameter meets a preset parameter threshold comprises:
judging whether the environmental temperature value is smaller than a preset temperature threshold value or not;
and if the environmental temperature is smaller than the preset temperature threshold value, acquiring the rain and snow intensity value, and executing the step of determining the target acquisition frequency of the icing thickness value based on the rain and snow intensity value.
4. The method of claim 2, wherein the determining the target acquisition frequency of the icing thickness value based on the rain and snow intensity value comprises:
judging the relation between the rain and snow intensity value and a preset intensity threshold, wherein the preset intensity threshold comprises a first preset intensity threshold and a second preset intensity threshold, and the second preset intensity threshold is larger than the first preset intensity threshold;
if the rain and snow intensity value is smaller than the first preset intensity threshold value, the target acquisition frequency is a first preset frequency, wherein the first preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the first preset intensity threshold value;
if the rain and snow intensity value is larger than the first preset intensity threshold value and smaller than the second preset intensity threshold value, the target acquisition frequency is a second preset frequency, wherein the second preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the first preset intensity threshold value and the second preset intensity threshold value;
and if the rain and snow intensity is greater than the second preset intensity threshold, the target acquisition frequency is a third preset frequency, wherein the third preset frequency is determined based on the magnitude relation between the rain and snow intensity value and the second preset intensity threshold.
5. A method according to claim 3, wherein after the ice-melting heating unit turns on ice-melting, the ice-melting method further comprises:
calculating the icing thickness change rate of the corresponding freezing point based on the icing thickness value of the corresponding icing point of each opened ice-melting heating unit;
determining ice melting power of the corresponding ice melting and heating unit according to the ice thickness change rate and the ice thickness value;
and adjusting the corresponding ice melting and heating units to work with the ice melting power.
6. The method of claim 1, wherein the ice-melting method further comprises:
receiving a heating start instruction, wherein the heating start instruction is input by a user through a man-machine interaction unit;
and based on the heating start instruction, executing the steps of determining the icing point of the vehicle battery and the subsequent steps based on the position of the icing sensor corresponding to the icing thickness value meeting the preset threshold.
7. An ice melting system of a battery is characterized by comprising a plurality of ice forming sensors and a plurality of ice melting and heating units;
the plurality of icing sensors are arranged around the battery in a surrounding mode and are arranged in one-to-one correspondence with the plurality of locking mechanisms of the battery;
the ice melting and heating unit is arranged at the ice forming sensor in a unique corresponding mode;
the icing sensor is used for acquiring an icing thickness value of the vehicle battery at a target acquisition frequency;
the ice melting and heating unit is used for heating and melting ice at an ice point of the vehicle battery, wherein the position of the ice point is determined based on the ice thickness value.
8. The system of claim 7, wherein the ice-melt system further comprises: a power supply device and a plurality of first switches;
one of the first switches is connected in series only corresponding to one of the ice-melting and heating units;
the plurality of ice-melting and heating units are electrically connected with the power supply device and are connected in parallel;
the first switch is used for controlling the on-off of the ice-melting and heating units which are correspondingly connected in series;
the power supply device is used for supplying power to the ice-melting and heating unit corresponding to the closed first switch.
9. The system of claim 8, wherein the ice-melt system further comprises: the whole car heat management system and the thermoelectric generator;
the whole vehicle thermal management system is used for acquiring waste heat energy discharged by each power system of the vehicle;
the thermoelectric generator is connected with the whole vehicle thermal management system and the power supply device, converts the waste heat energy acquired by the whole vehicle thermal management system into electric energy, and stores the converted electric energy in the power supply device.
10. A vehicle comprising the battery ice melting system of any one of claims 7-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311473658.XA CN117465299A (en) | 2023-11-07 | 2023-11-07 | Ice melting method and system for battery and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311473658.XA CN117465299A (en) | 2023-11-07 | 2023-11-07 | Ice melting method and system for battery and vehicle |
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