CN112590622A - Standardization method and system for power battery of electric automobile - Google Patents
Standardization method and system for power battery of electric automobile Download PDFInfo
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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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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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
- 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
- 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
- B60L58/26—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 cooling
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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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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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Abstract
The invention discloses a method and a system for standardizing power batteries of electric automobiles, belonging to the field of electric automobile batteries, wherein the method is characterized in that the types of the power batteries of the electric automobiles are unified, the power batteries of different types of electric automobiles are universal in a mode of meeting the size difference of the electric automobiles according to the number of the batteries, the ownership of the batteries is separated from a vehicle provider and a vehicle user by establishing a third party mechanism of the power batteries, service station points of the batteries are uniformly laid by the third party mechanism, the power batteries on the electric automobiles are replaced, and the electric automobiles can be conveniently and rapidly continued, so that the problems of incomplete charging technology and insufficient power continuation difficulty of the existing electric automobiles are effectively solved, the comprehensive popularization of the electric automobiles in the future is promoted, and the unified power batteries have high-efficiency heat dissipation and self-extinguishing performance, provides double guarantee for the safe use of the device.
Description
Technical Field
The invention relates to the field of batteries of electric vehicles, in particular to a method and a system for standardizing a power battery of an electric vehicle.
Background
The electric vehicle (BEV) is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor, and meets various requirements of road traffic and safety regulations. The working principle is as follows: the automobile is driven to run by a storage battery, a current, a power regulator, a motor and a power transmission system, and the automobile has a wide prospect due to smaller environmental influence compared with the traditional automobile, but the current technology is not mature. The concrete aspects are as follows:
firstly, a battery bottleneck: at present, electric automobiles strive to improve the single-charging endurance capacity of the electric automobiles, but the improvement of the battery technology does not have too much space for improving the endurance capacity, the problem that the electric automobiles are convenient and fast can not be really solved even if the single endurance reaches 1000 kilometers, the longer the single endurance is, the heavier the battery is, the longer the required charging time is, the higher the battery with higher technical content means higher cost and selling price, and the more difficult maintenance. Therefore, it is impossible to solve the pain of the electric vehicle in practical convenience and economy by the battery technology.
Secondly, the integral power exchanging station in the existing integral power exchanging technology has high construction cost and complex equipment, and also needs to independently occupy land space, which cannot be realized in a common commercial door. Moreover, batteries of various vehicle types and brands are not universal, vehicles and enterprises are in mutual battle, network construction difficulty is high, coverage is extremely low, and the whole battery replacement is difficult for battery power surplus and replacement charging, so that benefits are more difficult to create.
And thirdly, research and development of each enterprise are in turn led to high research and development expenditure on development of battery technology or other new energy technology for each enterprise, and the high research and development investment is also a nightmare which cannot be used by each enterprise.
And besides the problems of inconvenient opening and endurance, the battery-containing electric vehicle is expensive to purchase, the loss of the battery is quickly attenuated by using and maintaining the non-professional battery, the utilization rate of the battery is low, the battery is frequently replaced due to the expiration of the service life, the cost of the battery is higher, and the cost of the electric vehicle is higher than the use cost of a fuel vehicle.
In summary, charging is simply inconvenient, charging positions are difficult to find, endurance and running are not far away, purchase price is high, and battery replacement cost is high.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a method and a system for standardizing power batteries of electric vehicles, which enable the power batteries to be universal among different electric vehicles by adopting a mode of unifying the model standards of the power batteries of the electric vehicles and catering to the size difference of the electric vehicles with different models according to the number of the batteries, enable the ownership of the batteries to be separated from a vehicle provider (vehicle enterprises) and a vehicle user (vehicle owner) by establishing a third party mechanism of the power batteries, and enable the power batteries on the electric vehicles to be replaced by uniformly laying service station network points of the batteries through the third party mechanism so as to realize convenient and quick continuation of the electric vehicles, thereby effectively solving the problems of incomplete charging technology and insufficient power continuation difficulty of the existing electric vehicles and promoting the comprehensive popularization of the future electric vehicles, in addition, the unified power battery has high-efficiency heat dissipation and self-extinguishing performance, and provides double guarantee for self safe use.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A standardization method of an electric automobile power battery comprises the following steps:
s1, the power batteries of the electric automobiles are made into small blocks, the sizes of the power batteries are unified by using the unified size model, all the electric automobiles are made to have unified power battery standards by relative unification of the batteries, and the size difference among various types of vehicles of various brands is met by using different quantities of the batteries;
s2, enabling all power batteries in the electric automobile to be uniformly grouped through an energy management system, sequentially using the power batteries according to groups when in use, automatically switching, enabling the battery packs not to be influenced by each other, and freely replacing the battery packs, wherein each group at least comprises one power battery;
s3, establishing a third party mechanism of the power battery, and separating the battery ownership from a vehicle provider (vehicle enterprise) and a vehicle user (vehicle owner) through the third party mechanism, namely the vehicle enterprise does not contain the power battery when selling;
s4, a service station group with unified management is established to lay service station network points, so that all electric vehicles using the power battery can realize convenient cruising, and the power battery can be freely replaced at any network point.
The invention realizes the general use of the power battery among different electric vehicles by adopting the mode of unifying the model standards of the power battery of the electric vehicle and catering to the size difference of the electric vehicles with different models according to the quantity of the battery, separates the ownership of the battery from a vehicle provider (vehicle enterprise) and a vehicle user (vehicle owner) by establishing a third party mechanism of the power battery, uniformly lays service station nodes of the battery through the third party mechanism, the invention effectively solves the problems of incomplete charging technology and difficult cruising due to insufficient electric power of the existing electric automobile, promotes the comprehensive popularization of the electric automobile in the future, in addition, the unified power battery has high-efficiency heat dissipation and self-extinguishing performance, and provides double guarantee for self safe use.
The utility model provides an electric automobile power battery system, is including installing in the inside energy management system of electric automobile, energy management system includes power supply switching module, power supply switching module is connected with electric quantity monitoring module, electric quantity monitoring module is connected with a plurality of power battery groups, power supply switching module is connected with the inside actuating system of electric automobile, carries out real-time supervision to power battery group residual capacity through electric quantity monitoring module, and when last power battery group electric quantity was not enough, power supply switching module automatic switch next power battery group provides the electric energy to electric automobile.
Furthermore, the power supply switching module is also connected with a temperature monitoring module, and is a plurality of the power battery pack is connected with the temperature monitoring module, in the using process of the power battery pack, the temperature monitoring module monitors the real-time temperature of the power battery pack in use, when the temperature of the power battery pack exceeds the preset maximum temperature value of the temperature monitoring module, the power supply switching module can be switched to the next power battery pack in advance, namely, the power supply process of the power battery pack with overhigh temperature is stopped, so that the use safety of the power battery pack is ensured, and the occurrence rate of accidents such as circuit short circuit and battery fire caused by overhigh temperature is reduced.
Furthermore, the power battery comprises a battery body, a shell is fixedly connected to the outer surface of the battery body, a screen plate is fixedly connected to the inner side wall of the shell, a plurality of uniformly distributed annular storage tanks are formed in the inner wall of the shell, liquid bags are arranged in the annular storage tanks, the upper ends and the lower ends of the liquid bags are respectively fixedly connected with the upper inner wall and the lower inner wall of the annular storage tanks, phase-change materials are filled in the liquid bags, heat generated by the battery body enters the annular storage tanks through the screen plate in the process that the battery body supplies power to the electric vehicle and is absorbed and stored by the phase-change materials, the phase-change materials can generate solid-liquid phase change after absorbing enough heat, namely the solid phase is changed into the liquid phase, and the phase-change materials can continuously absorb heat to maintain the liquid phase, so that the heat dissipation of the battery body is realized, and, effectively ensure the safe use of the battery body.
Furthermore, the phase-change material adopts a solid-liquid phase-change energy storage material of calcium chloride hexahydrate with a melting point of 30 degrees, the calcium chloride is a non-flammable and explosive substance, the calcium chloride hexahydrate is used as the solid-liquid phase-change material, on one hand, heat storage phase change is realized, on the other hand, when a battery body is in fire due to high temperature, a liquid bag is broken under the influence of the fire, the calcium chloride hexahydrate which is in a liquid phase flows out to effectively extinguish the fire of the battery body, so that the fire intensity of the battery body is reduced, the fire accident of an automobile is reduced, and further guarantee is provided for the safe use of the battery body.
Furthermore, a plurality of liquid flow channels which are uniformly distributed are further formed in the shell, the liquid flow channels are uniformly distributed between the adjacent pair of annular storage tanks and are communicated with the annular storage tanks, openings are formed in the upper end and the lower end of each liquid bag, the liquid flow channels are located on the inner sides of the openings of the liquid bags, the circulation between the adjacent pair of liquid bags is realized through the liquid flow channels, and when the phase-change materials are subjected to solid-liquid phase change, the phase-change materials in the liquid bags can realize mutual circulation, so that when a battery body is in fire, after one of the liquid bags is broken, the liquid phase-change materials in the other liquid bags can realize quick outflow, and the battery body is subjected to quick and effective fire extinguishing treatment in time.
Furthermore, the inner wall of the liquid flow channel is provided with a capacity increasing groove, an opening air bag is fixedly connected between the upper inner wall and the lower inner wall of the capacity increasing groove, the inner wall of the capacity increasing groove, which is close to the screen plate, is provided with a plurality of uniformly distributed air flow holes, when the phase-change material undergoes solid-liquid phase change, the phase-change material can undergo certain volume change, more space can be provided for the volume change of the phase-change material through the elastic deformation of the opening air bag, so that the liquid bag is not easy to be damaged due to the volume change of the phase-change material, and the air flow holes are used for the air flow to enter and exit when.
Furthermore, the surface printing of shell has the temperature sensing discoloration layer, the temperature sensing discoloration layer adopts irreversible temperature sensing discoloration material to make, and the temperature sensing discoloration layer can reflect the maximum temperature that whole power battery exists in the use, and after retrieving power battery, can learn the condition of generating heat of each power battery through the colour change of observing the temperature sensing discoloration layer, and then carry out the deep detection contrastive analysis to it, provides powerful data support for studying out the power battery that generates heat lowly, the performance is better.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme integrates the model standards of the power batteries of the electric automobiles, meets the size difference of the electric automobiles with different models according to the quantity of the batteries, realizes the universality of the power batteries among different electric automobiles, separates the ownership of the batteries from a vehicle provider (vehicle enterprise) and a vehicle user (vehicle owner) by establishing a third party mechanism of the power batteries, and uniformly lays service station nodes of the batteries through the third party mechanism, the invention effectively solves the problems of incomplete charging technology and difficult cruising due to insufficient electric power of the existing electric automobile, promotes the comprehensive popularization of the electric automobile in the future, in addition, the unified power battery has high-efficiency heat dissipation and self-extinguishing performance, and provides double guarantee for self safe use.
(2) The utility model provides an electric automobile power battery system, including installing in the inside energy management system of electric automobile, energy management system includes power supply switching module, power supply switching module is connected with electric quantity monitoring module, electric quantity monitoring module is connected with a plurality of power battery groups, power supply switching module is connected with the inside actuating system of electric automobile, carry out real-time supervision to power battery group residual capacity through electric quantity monitoring module, when last power battery group electric quantity is not enough, power supply switching module automatic switching next power battery group provides the electric energy to electric automobile.
(3) The power supply switching module is also connected with a temperature monitoring module, a plurality of power battery packs are all connected with the temperature monitoring module, in the use process of the power battery packs, the temperature monitoring module carries out real-time temperature monitoring on the power battery packs in use, when the temperature of the power battery packs exceeds the preset maximum temperature value of the temperature monitoring module, the power supply switching module can be switched to the next power battery pack in advance, namely, the power supply process of the power battery packs with overhigh temperature is stopped, thereby the use safety of the power battery packs is ensured, and the occurrence rate of accidents such as circuit short circuit and battery fire caused by overhigh temperature is reduced.
(4) The power battery comprises a battery body, the outer surface of the battery body is fixedly connected with a shell, the inner side wall of the shell is fixedly connected with a screen plate, the inner wall of the shell is provided with a plurality of evenly distributed annular storage tanks, liquid bags are arranged inside the annular storage tanks, the upper ends and the lower ends of the liquid bags are respectively fixedly connected with the upper inner wall and the lower inner wall of the annular storage tanks, phase-change materials are filled inside the liquid bags, when the battery body supplies power to the electric automobile, the heat generated by the battery body enters the annular storage groove through the screen plate and is absorbed and stored by the phase-change material, the phase-change material can generate solid-liquid phase change after absorbing enough heat, i.e. from solid to liquid, and after the phase change material changes to liquid, it can continuously absorb heat to maintain the liquid phase, therefore, the battery body is cooled, the influence of heat on the battery body is reduced, and the safe use of the battery body is effectively guaranteed.
(5) The phase change material adopts a solid-liquid phase change energy storage material of calcium chloride hexahydrate with a melting point of 30 degrees, the calcium chloride is a non-flammable explosive substance, the calcium chloride hexahydrate is used as the solid-liquid phase change material, on one hand, heat storage phase change is realized, on the other hand, when a battery body is in fire due to high temperature, a liquid bag is broken under the influence of the fire, the calcium chloride hexahydrate which is in a liquid phase flows out to effectively extinguish the fire of the battery body, so that the fire intensity of the battery body is reduced, the fire accident of an automobile is reduced, and further guarantee is provided for the safe use of the battery body.
(6) A plurality of evenly distributed's flow channel has still been seted up to the inside of shell, a plurality of flow channel evenly distributed are between adjacent a pair of annular holding tank, and flow channel communicates with each other with annular holding tank, the opening has all been seted up at the upper and lower both ends of liquid bag, flow channel is located the opening of liquid bag inboard, realize the circulation between adjacent a pair of liquid bags through flow channel, when phase change material takes place solid-liquid phase transition, the phase change material in a plurality of liquid bags can realize the circulation each other, when battery body takes place the conflagration like this, after one of them liquid bag takes place to break, liquid phase change material in all the other liquid bags all can realize flowing out fast, in time carry out the quick processing of putting out a fire effectively to battery body.
(7) The inner wall of the liquid flow channel is provided with a capacity increasing groove, an opening air bag is fixedly connected between the upper inner wall and the lower inner wall of the capacity increasing groove, a plurality of airflow holes which are uniformly distributed are formed in the inner wall, close to the screen plate, of the capacity increasing groove, when the phase-change material is subjected to solid-liquid phase change, the phase-change material can be subjected to certain volume change, more spaces can be provided for the volume change of the phase-change material through the elastic deformation of the opening air bag, the liquid bag is not prone to damage due to the volume change of the phase-change material, and the airflow holes are used for the air flow to.
(8) The surface printing of shell has the temperature sensing discoloration layer, and the temperature sensing discoloration layer adopts irreversible temperature sensing discoloration material to make, and the temperature sensing discoloration layer can reflect the maximum temperature that whole power battery exists in the use, and after retrieving power battery, can learn the condition of generating heat of each power battery through the colour change of observing the temperature sensing discoloration layer, and then carry out degree of depth detection contrastive analysis to it, and the power battery who generates heat for the research out is low, the performance is better provides powerful data support.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a block diagram of the system of the present invention;
FIG. 3 is a schematic diagram of the front structure of the power battery of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
fig. 5 is a schematic view of a partial front structure of the phase change material after solid-liquid phase change.
The reference numbers in the figures illustrate:
1 battery body, 2 outer shell, 201 annular storage tank, 202 liquid flow channel, 203 capacity increasing tank, 204 airflow hole, 3 mesh plate, 4 liquid bag, 5 phase change material, 6 opening air bag, 7 heat sensitive color changing layer.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1, a method for standardizing a power battery of an electric vehicle includes the following steps:
s1, the power batteries of the electric automobiles are made into small blocks, the sizes of the power batteries are unified by using the unified size model, all the electric automobiles are made to have unified power battery standards by relative unification of the batteries, and the size difference among various types of vehicles of various brands is met by using different quantities of the batteries;
s2, enabling all power batteries in the electric automobile to be uniformly grouped through an energy management system, sequentially using the power batteries according to groups when in use, automatically switching, enabling the battery packs not to be influenced by each other, and freely replacing the battery packs, wherein each group at least comprises one power battery;
s3, establishing a third party mechanism of the power battery, and separating the battery ownership from a vehicle provider (vehicle enterprise) and a vehicle user (vehicle owner) through the third party mechanism, namely the vehicle enterprise does not contain the power battery when selling;
s4, a service station group with unified management is established to lay service station network points, so that all electric vehicles using the power battery can realize convenient cruising, and the power battery can be freely replaced at any network point.
Referring to fig. 2, an electric vehicle power battery system comprises an energy management system installed inside an electric vehicle, the energy management system comprises a power supply switching module, the power supply switching module is connected with a power monitoring module, the power monitoring module is connected with a plurality of power battery packs, the power supply switching module is connected with a driving system inside the electric vehicle, the power battery pack residual power is monitored in real time through the power monitoring module, when the last power battery pack is insufficient in power, the power supply switching module automatically switches the next power battery pack to provide power for the electric vehicle, the power supply switching module is also connected with a temperature monitoring module, the plurality of power battery packs are all connected with the temperature monitoring module, during the use process of the power battery packs, the temperature monitoring module monitors the real-time temperature of the power battery packs in use, when the temperature exceeds the preset maximum temperature value of the temperature monitoring module, the power supply switching module can be switched to the next power battery pack in advance, namely, the power supply process of the power battery pack with the overhigh temperature is stopped, so that the use safety of the power battery pack is ensured, and the occurrence rate of accidents such as circuit short circuit, battery fire and the like caused by overhigh temperature is reduced.
Referring to fig. 3 and 4, the power battery includes a battery body 1, a housing 2 is fixedly connected to an outer surface of the battery body 1, a mesh plate 3 is fixedly connected to an inner side wall of the housing 2, a plurality of evenly distributed annular storage tanks 201 are formed on an inner wall of the housing 2, a liquid bag 4 is disposed inside the annular storage tanks 201, upper and lower ends of the liquid bag 4 are respectively fixedly connected to upper and lower inner walls of the annular storage tanks 201, a phase change material 5 is filled inside the liquid bag 4, the phase change material 5 is a calcium chloride hexahydrate solid-liquid phase change energy storage material with a melting point of 30 degrees, when the battery body 1 supplies power to an electric vehicle, heat generated by the battery body 1 enters the annular storage tanks 201 through the mesh plate 3 and is absorbed and stored by the phase change material 5, the phase change material 5 can generate solid-liquid phase change after absorbing enough heat, that is changed from solid to liquid, and, the heat can be continuously absorbed to maintain the liquid phase, so that the heat dissipation of the battery body 1 is realized, the influence of the heat on the battery body 1 is reduced, and the safe use of the battery body 1 is effectively ensured; calcium chloride is a non-flammable explosive substance, uses here hexahydrate calcium chloride as solid-liquid phase-change material, realizes heat accumulation phase transition on the one hand, and on the other hand, when battery body 1 conflagration because of high temperature takes place, liquid bag 4 breaks down under the influence of conflagration, and the hexahydrate calcium chloride who has become liquid phase flows out and can effectively put out a fire to battery body 1 and handle to reduce battery body 1's intensity of a fire size, reduce car fire accident, provide further guarantee for battery body 1's safe handling.
Referring to fig. 5, a plurality of evenly distributed liquid flow channels 202 are further formed in the housing 2, the liquid flow channels 202 are evenly distributed between a pair of adjacent annular storage tanks 201, the liquid flow channels 202 are communicated with the annular storage tanks 201, openings are formed in the upper end and the lower end of each liquid bag 4, the liquid flow channels 202 are located on the inner sides of the openings of the liquid bags 4, the liquid flow channels 202 achieve communication between the adjacent pair of liquid bags 4, and when the phase change materials 5 change from a solid phase to a liquid phase, the phase change materials 5 in the liquid bags 4 can achieve mutual communication, so that when a fire breaks in the battery body 1, the liquid phase change materials 5 in the other liquid bags 4 can achieve rapid outflow after one of the liquid bags 4 breaks, and the battery body 1 is rapidly and effectively put out a fire in time.
The inner wall of the liquid flow channel 202 is provided with a capacity increasing groove 203, an opening airbag 6 is fixedly connected between the upper inner wall and the lower inner wall of the capacity increasing groove 203, the inner wall of the capacity increasing groove 203 close to the screen plate 3 is provided with a plurality of airflow holes 204 which are uniformly distributed, when the phase change material 5 is subjected to solid-liquid phase change, the phase change material 5 can generate certain volume change, more space can be provided for the volume change of the phase change material 5 through the elastic deformation of the opening airbag 6, the liquid bag 4 is not easy to be damaged due to the volume change of the phase change material 5, and the airflow holes 204 are used for the air flow to enter and exit when the opening airbag 6.
The surface printing of shell 2 has temperature sensing discoloration layer 7, temperature sensing discoloration layer 7 adopts irreversible temperature sensing discoloration material to make, and temperature sensing discoloration layer 7 can reflect the maximum temperature that whole power battery exists in the use, after retrieving power battery, can learn the condition of generating heat of each power battery through the colour change of observing temperature sensing discoloration layer 7, and then carry out the degree of depth detection contrastive analysis to it, low, the better power battery of performance provides powerful data support for studying out generating heat.
The invention realizes the general use of the power battery among different electric vehicles by adopting the mode of unifying the model standards of the power battery of the electric vehicle and catering to the size difference of the electric vehicles with different models according to the quantity of the battery, separates the ownership of the battery from a vehicle provider (vehicle enterprise) and a vehicle user (vehicle owner) by establishing a third party mechanism of the power battery, uniformly lays service station nodes of the battery through the third party mechanism, the invention effectively solves the problems of incomplete charging technology and difficult cruising due to insufficient electric power of the existing electric automobile, promotes the comprehensive popularization of the electric automobile in the future, in addition, the unified power battery has high-efficiency heat dissipation and self-extinguishing performance, and provides double guarantee for self safe use.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (8)
1. A standardization method of an electric automobile power battery is characterized in that: the method comprises the following steps:
s1, the power batteries of the electric automobiles are made into small blocks, the sizes of the power batteries are unified by using the unified size model, all the electric automobiles are made to have unified power battery standards by relative unification of the batteries, and the size difference among various types of vehicles of various brands is met by using different quantities of the batteries;
s2, enabling all power batteries in the electric automobile to be uniformly grouped through an energy management system, sequentially using the power batteries according to groups when in use, automatically switching, enabling the battery packs not to be influenced by each other, and freely replacing the battery packs, wherein each group at least comprises one power battery;
s3, establishing a third party mechanism of the power battery, and separating the battery ownership from a vehicle provider and a vehicle user through the third party mechanism, namely, the power battery is not included when the vehicle is sold by the vehicle enterprise;
s4, a service station group with unified management is established to lay service station network points, so that all electric vehicles using the power battery can realize convenient cruising, and the power battery can be freely replaced at any network point.
2. The utility model provides an electric automobile power battery system which characterized in that: including installing in the inside energy management system of electric automobile, energy management system includes power supply switching module, power supply switching module is connected with electric quantity monitoring module, electric quantity monitoring module is connected with a plurality of power battery groups, power supply switching module is connected with the inside actuating system of electric automobile.
3. The electric vehicle power battery system of claim 2, wherein: the power supply switching module is also connected with a temperature monitoring module, and the power battery pack is connected with the temperature monitoring module.
4. The electric vehicle power battery system of claim 2, wherein: the power battery comprises a battery body (1), the outer surface of the battery body (1) is fixedly connected with a shell (2), the inner side wall of the shell (2) is fixedly connected with a screen plate (3), the inner wall of the shell (2) is provided with a plurality of uniformly distributed annular storage tanks (201), the inside of each annular storage tank (201) is provided with a liquid bag (4), the upper end and the lower end of each liquid bag (4) are respectively fixedly connected with the upper inner wall and the lower inner wall of each annular storage tank (201), and the inside of each liquid bag (4) is filled with a phase-change material (5).
5. The electric vehicle power battery system of claim 1, wherein: the phase-change material (5) is a solid-liquid phase-change energy storage material of calcium chloride hexahydrate with a melting point of 30 degrees.
6. The electric vehicle power battery system of claim 4, wherein: the liquid bag is characterized in that a plurality of evenly distributed liquid flow channels (202) are further formed in the shell (2), the liquid flow channels (202) are evenly distributed between the adjacent annular storage grooves (201), the liquid flow channels (202) are communicated with the annular storage grooves (201), openings are formed in the upper end and the lower end of the liquid bag (4), and the liquid flow channels (202) are located on the inner side of the openings of the liquid bag (4).
7. The electric vehicle power battery system of claim 6, wherein: the inner wall of the liquid flow channel (202) is provided with a capacity increasing groove (203), an open air bag (6) is fixedly connected between the upper inner wall and the lower inner wall of the capacity increasing groove (203), and the inner wall of the capacity increasing groove (203) close to the screen plate (3) is provided with a plurality of airflow holes (204) which are uniformly distributed.
8. The electric vehicle power battery system of claim 1, wherein: the outer surface of the shell (2) is printed with a thermosensitive color-changing layer (7), and the thermosensitive color-changing layer (7) is made of an irreversible thermosensitive color-changing material.
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