CN111224178A - New energy automobile power supply system based on thing networking - Google Patents
New energy automobile power supply system based on thing networking Download PDFInfo
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- CN111224178A CN111224178A CN201910985494.6A CN201910985494A CN111224178A CN 111224178 A CN111224178 A CN 111224178A CN 201910985494 A CN201910985494 A CN 201910985494A CN 111224178 A CN111224178 A CN 111224178A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6562—Gases with free flow by convection only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a new energy automobile power supply system based on the Internet of things, which belongs to the field of new energy automobile power supply systems, and comprises a main battery pack which is arranged in a battery box and consists of a plurality of single batteries in series-parallel connection, wherein the main battery pack is connected with a battery balancing system, the battery balancing system can realize the accurate detection and control of the voltage, the current, the temperature and other parameters of the single batteries, reduce the basic parameter difference among the single batteries, optimize the service performance and the service life of the battery pack, simultaneously, the fire protection system is used for cooling the overheated temperature of the batteries, the fire occurrence rate of the batteries is reduced, when the temperature is out of control and the fire happens, the batteries can be subjected to fire extinguishing treatment in the battery box, so that the fire condition is treated from the source, and the fire accidents of vehicles are reduced, provides more comprehensive guarantee for the safety of life and property.
Description
Technical Field
The invention relates to the field of new energy automobile power supply systems, in particular to a new energy automobile power supply system based on the Internet of things.
Background
The new energy automobile adopts unconventional automobile fuel as a power source or conventional automobile fuel, adopts a novel vehicle-mounted power device, integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure.
As one of strategic emerging industries in China, the new energy automobile rapidly develops the industrial scale and the technical level. According to statistics, the new energy automobile holding amount in China is over 160 thousands of automobiles and accounts for 50% of the new energy automobile holding amount in the whole world by 2017. However, with the increase of the amount of the new energy vehicles, the safety problem of the new energy vehicles becomes more and more prominent, wherein the fire accident is particularly concerned by society. The national quality inspection bureau defect product management center issues an announcement: according to the public opinion information display mastered by us, new energy vehicles have been sent in 2018, and the fire accident 40 remains.
In 1 month of 2018, spontaneous combustion occurs in a Tesla Model S in a garage of a certain district in Chongqing; in 2018, in 5 months, a wild horse U-energy E350 new energy automobile spontaneously ignites during charging, and the automobile is burnt to leave only empty racks due to the fact that fire is too violent; on 31.8.2018, a sail 650EV burns at the roadside.
However, a large part of the causes of the new energy automobile fire are caused by the mounted power battery, and the cause is mainly thermal runaway caused by overheating of the battery.
Most of power batteries used on the existing electric automobiles are battery packs formed by connecting a plurality of battery monomers of the types of lead-acid batteries, nickel-hydrogen batteries or lithium ion batteries in series and in parallel, however, basic parameters of the battery monomers in the same group are slightly different, and with the increase of the service time of the batteries, the differences of voltage, electric quantity, temperature and the like among the battery monomers are more obvious, so that the service performance and the service life of the battery packs are seriously influenced once the differences exceed a certain range, the battery ignition condition is seriously caused because the temperature of the battery monomers is overhigh, and once the batteries are ignited to cause vehicle fire, the batteries in the vehicles are difficult to carry out root fire extinguishing treatment from the outside, so that serious vehicle fire accidents are caused, and the life and property safety are seriously influenced.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a power supply system for a new energy automobile based on the Internet of things, which can realize the accurate detection and control of parameters such as voltage, current and temperature of single batteries through a battery balance system, reduce the basic parameter difference among the single batteries, optimize the service performance and service life of a battery pack, reduce the temperature of battery overheating through a fire protection system, reduce the occurrence rate of battery fire, and extinguish the fire of the battery in a battery box when the temperature is out of control and the fire is generated, thereby treating the fire situation from the source, reducing the vehicle fire accident and providing more comprehensive guarantee for the life and property safety.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A new energy automobile power supply system based on the Internet of things comprises a main battery pack which is arranged inside a battery box and is formed by connecting a plurality of single batteries in series and in parallel, wherein the main battery pack is connected with a battery balance system, the battery balance system is connected with a power main control system, the power main control system is connected with a fire protection system, the battery balance system is also connected with an emergency cut-off system and a standby battery pack, the battery balance system comprises a balance main control module, the balance main control module is connected with a single battery voltage detection module, a single battery current detection module, a single battery temperature detection module and a single battery charge-discharge module, the single battery voltage detection module, the single battery current detection module, the single battery temperature detection module and the single battery charge-discharge module are all connected with the main battery pack, the balance main control module is connected with the power, according to the invention, the battery balance system can realize accurate detection and control of parameters such as voltage, current and temperature of the single batteries, the basic parameter difference among the single batteries is reduced, the service performance and the service life of the battery pack are optimized, meanwhile, the temperature of battery overheating is reduced through the fire protection system, the fire occurrence rate of the battery is reduced, and when the temperature is out of control and the fire occurs, the fire extinguishing treatment can be carried out on the battery in the battery box, so that the fire condition is treated from the source, the vehicle fire accident is reduced, and more comprehensive guarantee is provided for life and property safety.
Furthermore, a battery cavity, a main water-cooling cavity, an auxiliary water-cooling cavity and a pair of heat dissipation cavities are formed in the battery box, the main water-cooling cavity and the auxiliary water-cooling cavity are respectively located on the left side and the right side of the battery cavity, the heat dissipation cavities are respectively located on the two sides of the main water-cooling cavity and the auxiliary water-cooling cavity, and the main battery pack is installed in the battery cavity.
Furthermore, the inner walls of the main water-cooling cavity and the auxiliary water-cooling cavity are fixedly connected with water pumps, the water inlet ends of the water pumps are fixedly connected with water inlet pipes, the water outlet ends of the water pumps are fixedly connected with a plurality of water outlet pipes, and cooling water is filled in the main water-cooling cavity and the auxiliary water-cooling cavity.
Further, be located the both sides inner wall that the tip of the outlet pipe of vice water-cooling intracavity runs through the battery chamber and stretches into main water-cooling chamber, be located the both sides inner wall that the tip of the outlet pipe of main water-cooling intracavity runs through the battery chamber and stretches into vice water-cooling chamber, cools down to the main battery group in the battery chamber through the flow of cooling water in the outlet pipe, during the start-up water pump, the cooling water of main water-cooling chamber and vice water-cooling intracavity passes through the outlet pipe and circulates each other, realizes that the cooling water carries out synchronous mutual complementation when flowing to make the cooling process can go on uninterruptedly.
Further, the outer end fixedly connected with water dispersion pipe of outlet pipe, water dispersion pipe is located the battery chamber, fixedly connected with electric valve on the water dispersion pipe, electric valve control water dispersion pipe's switching is opened, and the cooling water in the outlet pipe can flow into the inside in battery chamber through water dispersion pipe.
Furthermore, the water pump and the electric valve are both connected with a fire protection system, and the start of the water pump and the electric valve is controlled through the fire protection system.
Further, a plurality of evenly distributed's ventilation hole has been seted up to the lateral wall in heat dissipation chamber, the ventilation hole communicates with each other with the external world, and when cooling down the cooling to the battery chamber through the cooling water, the cooling water heat absorption heaies up, and its heat can get into the heat dissipation chamber, gives off the external world through the ventilation hole then, realizes the cooling effect to the cooling water to its next use of being convenient for.
Furthermore, the surface of battery box scribbles the insulating layer, and the surface of battery box is difficult for receiving the influence of the interior high temperature of battery box, makes human and the outside contact of battery box be difficult for receiving high temperature influence.
Further, the control method of the battery balance system comprises the following steps: setting the allowed voltage difference between the single batteries of the main battery pack as B1-B2, setting the allowed current difference between the single batteries of the main battery pack as C1-C2, detecting the voltage of the single batteries in real time through the single battery voltage detection module and the single battery current detection module, and controlling the charge and discharge of the relevant single batteries by the single battery charge and discharge module when detecting that the voltage difference between the single batteries exceeds B1-B2 or the voltage difference exceeds C1-C2, so as to control the voltage, the current and other parameters between the single batteries within an allowed range.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme passes through battery balance system and can realize the voltage to the battery cell, accurate detection and control are carried out to parameters such as electric current and temperature, reduce the basic parameter difference between the battery cell, optimize group battery performance and life-span, and simultaneously, cool down the overheated temperature of battery through fire protection system, reduce battery conflagration incidence, when the temperature out of control is on fire, still can put out a fire to the battery in the battery box inside and handle, thereby handle the conflagration condition from the source, reduce vehicle fire accident, provide more comprehensive guarantee for life and property safety.
(2) The tip that is located the outlet pipe of vice water-cooling intracavity runs through the both sides inner wall in battery chamber and stretches into in the main water-cooling chamber, the tip that is located the outlet pipe of main water-cooling intracavity runs through the both sides inner wall in battery chamber and stretches into in the vice water-cooling chamber, main group battery in the battery chamber is cooled down through the flow of cooling water in the outlet pipe, during the start-up water pump, the cooling water in main water-cooling chamber and the vice water-cooling intracavity passes through the outlet pipe and circulates each other, realize that the cooling water carries out synchronous mutual replenishment when flowing, thereby make the cooling process go on uninterruptedly.
(3) The outer end fixedly connected with of outlet pipe scattered the water pipe, scattered the water pipe and be located the battery chamber, fixedly connected with electric valve on the scattered water pipe, electric valve control scattered the switching of water pipe, open electric valve, the inside that cooling water in the outlet pipe can flow into the battery chamber through scattered water pipe.
(4) A plurality of evenly distributed's ventilation hole has been seted up to the lateral wall in heat dissipation chamber, and the ventilation hole communicates with each other with the external world, and when cooling down the cooling to the battery chamber through the cooling water, the cooling water heat absorption heaies up, and its heat can get into in the heat dissipation chamber, gives off the external world through the ventilation hole then, realizes the cooling effect to the cooling water to its next use of being convenient for.
(5) The control method of the battery balance system comprises the following steps: setting the allowed voltage difference between the single batteries of the main battery pack as B1-B2, setting the allowed current difference between the single batteries of the main battery pack as C1-C2, detecting the voltage of the single batteries in real time through the single battery voltage detection module and the single battery current detection module, and controlling the charge and discharge of the relevant single batteries by the single battery charge and discharge module when detecting that the voltage difference between the single batteries exceeds B1-B2 or the voltage difference exceeds C1-C2, so as to control the parameters such as the voltage and the current between the single batteries within an allowed range.
(6) During the charging and discharging process, the emergency cut-off system is used for disconnecting the main battery pack from the battery balance system, the connection between the standby battery pack and the battery balance system is started, and after the main battery pack finishes the charging and discharging process, the connection between the main battery pack and the battery balance system is reconnected.
(7) The single battery temperature detection module detects the single batteries of the main battery pack in real time, and when the temperature of the single batteries reaches a high-temperature section (A1-A2 ℃), the water pump is started through the fire protection system, the electric valve is closed, and cooling water flows in the water outlet pipe to cool the interior of the battery cavity.
(8) When the single battery temperature detection module detects that the temperature of the single battery reaches a high-temperature section (A3-A4 ℃), the fire of the main battery pack is shown, at the moment, the water pump is started through the fire protection system, the electric valve is opened, cooling water is enabled to be sprayed into the battery cavity through the water distribution pipe, and the main battery pack is extinguished. So as to prevent further expansion of fire and cause great harm to vehicles and life safety.
(9) When the temperature of the single battery reaches a high-temperature section (A3-A4 ℃), the connection between the main battery pack and the battery balance system is cut off through the emergency cut-off system, the connection between the standby battery pack and the battery balance system is started, other circuits are protected, and the circuit can normally run under emergency conditions, so that the running safety of the vehicle is ensured to the maximum extent.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of a cell balancing system of the present invention;
FIG. 3 is a schematic front view of the battery box of the present invention;
fig. 4 is a schematic top view of the outlet pipe of the present invention.
The reference numbers in the figures illustrate:
1 battery box, 2 battery chamber, 31 main water-cooling chamber, 32 vice water-cooling chamber, 4 heat dissipation chamber, 5 water pumps, 6 inlet tubes, 7 outlet pipes, 8 electrically operated valves, 9 water dissipation pipes, 10 ventilation holes.
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 power supply system for a new energy automobile based on the internet of things comprises a main battery pack which is arranged in a battery box 1 and is formed by a plurality of single batteries in series-parallel connection, the main battery pack is connected with a battery balance system, the battery balance system is connected with a power main control system, the power main control system is connected with a fire protection system, the battery balance system is further connected with an emergency cut-off system and a standby battery pack, referring to fig. 2, the battery balance system comprises a balance main control module, the balance main control module is connected with a single battery voltage detection module, a single battery current detection module, a single battery temperature detection module, a single battery charge-discharge module and a single battery voltage detection module, the single battery current detection module, the single battery temperature detection module and the single battery charging and discharging module are all connected with the main battery pack, and the balance main control module is connected with the power supply main control system.
Referring to fig. 3, a battery cavity 2, a main water-cooling cavity 31, an auxiliary water-cooling cavity 32 and a pair of heat dissipation cavities 4 are formed in the battery box 1, the main water-cooling cavity 31 and the auxiliary water-cooling cavity 32 are respectively located at the left side and the right side of the battery cavity 2, the pair of heat dissipation cavities 4 are respectively located at the two sides of the main water-cooling cavity 31 and the auxiliary water-cooling cavity 32, and a main battery pack is installed in the battery cavity 2.
Equal fixedly connected with water pump 5 on the inner wall of main water-cooling chamber 31 and vice water-cooling chamber 32, the end fixedly connected with inlet tube 6 that intakes of water pump 5, a plurality of outlet pipes 7 of the play water end fixedly connected with of water pump 5, the inside of main water-cooling chamber 31 and vice water-cooling chamber 32 all is equipped with the cooling water.
The end of the water outlet pipe 7 in the auxiliary water-cooling cavity 32 penetrates through the inner walls of the two sides of the battery cavity 2 and extends into the main water-cooling cavity 31, the end of the water outlet pipe 7 in the main water-cooling cavity 31 penetrates through the inner walls of the two sides of the battery cavity 2 and extends into the auxiliary water-cooling cavity 32, the main battery pack in the battery cavity 2 is cooled by the flow of cooling water in the water outlet pipe 7, when the water pump 5 is started, the cooling water in the main water-cooling cavity 31 and the auxiliary water-cooling cavity 32 mutually circulates through the water outlet pipe 7, the cooling water is enabled to be synchronously supplemented when flowing out, and therefore the cooling process can be uninterruptedly carried out.
Outer end fixedly connected with water pipe 9 of outlet pipe 7, water pipe 9 is located battery chamber 2, fixedly connected with electric valve 8 on the water pipe 9 looses, electric valve 8 controls the switching of water pipe 9 looses, open electric valve 8, the inside that cooling water in the outlet pipe 7 can flow in battery chamber 2 through water pipe 9 looses, water pump 5 and electric valve 8 all are connected with fire protection system, through fire protection system control water pump 5 and electric valve 8's start-up.
The ventilation hole 10 of a plurality of evenly distributed is seted up to the lateral wall in heat dissipation chamber 4, ventilation hole 10 communicates with each other with the external world, when cooling down the cooling to battery chamber 2 through the cooling water, the cooling water heat absorption intensifies, its heat can get into in heat dissipation chamber 4, give off the external world through ventilation hole 10 then, realize the cooling effect to the cooling water, so that its next use, battery box 1's surface scribbles the insulating layer, battery box 1's surface is difficult for receiving the influence of high temperature in the battery box 1, make human and battery box 1 external contact be difficult for receiving the high temperature influence.
The control principle of the battery balancing system on the single batteries is as follows:
setting the allowed voltage difference between the single batteries of the main battery pack as B1-B2, setting the allowed current difference between the single batteries of the main battery pack as C1-C2, detecting the voltage of the single batteries in real time through the single battery voltage detection module and the single battery current detection module, and controlling the charge and discharge of the relevant single batteries by the single battery charge and discharge module when detecting that the voltage difference between the single batteries exceeds B1-B2 or the voltage difference exceeds C1-C2, so as to control the parameters such as the voltage and the current between the single batteries within an allowed range.
During the charging and discharging process, the emergency cut-off system is used for disconnecting the main battery pack from the battery balance system, the connection between the standby battery pack and the battery balance system is started, and after the main battery pack finishes the charging and discharging process, the connection between the main battery pack and the battery balance system is reconnected.
Principle of cooling process of main battery pack by fire protection system:
the single battery temperature detection module detects the single batteries of the main battery pack in real time, when the temperature of the single batteries reaches a high-temperature section (A1-A2 ℃), the water pump 5 is started through the fire protection system, the electric valve 8 is closed, and the cooling water flows in the water outlet pipe 7 to cool the inside of the battery cavity 2.
Fire extinguishing process principle of fire protection system:
when the single battery temperature detection module detects that the temperature of the single battery reaches a high-temperature section (A3-A4 ℃), indicating that the main battery pack catches fire, the water pump 5 is started through the fire protection system, the electric valve 8 is opened, cooling water is enabled to be sprinkled into the battery cavity 2 through the water distribution pipe 9, and the main battery pack is extinguished. So as to prevent further expansion of fire and cause great harm to vehicles and life safety.
When the temperature of the single battery reaches a high-temperature section (A3-A4 ℃), the connection between the main battery pack and the battery balance system is cut off through the emergency cut-off system, the connection between the standby battery pack and the battery balance system is started, other circuits are protected, and the circuit can normally run under emergency conditions, so that the running safety of the vehicle is ensured to the maximum extent.
According to the invention, the battery balance system can realize accurate detection and control of parameters such as voltage, current and temperature of the single batteries, the basic parameter difference among the single batteries is reduced, the service performance and the service life of the battery pack are optimized, meanwhile, the temperature of battery overheating is reduced through the fire protection system, the fire occurrence rate of the battery is reduced, and when the temperature is out of control and the fire occurs, the fire extinguishing treatment can be carried out on the battery in the battery box 1, so that the fire situation is handled from the source, the vehicle fire accident is reduced, and more comprehensive guarantee is provided for the life and property safety.
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 (9)
1. The utility model provides a power supply system for new energy automobile based on thing networking, is including installing the main battery group that comprises a plurality of battery cell series-parallel connection in battery box (1) inside, its characterized in that: the main battery pack is connected with a battery balance system, the battery balance system is connected with a power main control system, the power main control system is connected with a fire protection system, the battery balance system is further connected with an emergency cut-off system and a standby battery pack, the battery balance system comprises a balance main control module, the balance main control module is connected with a single battery voltage detection module, a single battery current detection module, a single battery temperature detection module and a single battery charge-discharge module, the single battery voltage detection module, the single battery current detection module, the single battery temperature detection module and the single battery charge-discharge module are all connected with the main battery pack, and the balance main control module is connected with the power main control system.
2. The power supply system for the new energy automobile based on the Internet of things according to claim 1, characterized in that: battery chamber (2), main water-cooling chamber (31), vice water-cooling chamber (32) and a pair of heat dissipation chamber (4) have been seted up to the inside of battery box (1), main water-cooling chamber (31) and vice water-cooling chamber (32) are located the left and right sides in battery chamber (2) respectively, and are a pair of heat dissipation chamber (4) are located the both sides in main water-cooling chamber (31) and vice water-cooling chamber (32) respectively, main battery pack installs in the inside in battery chamber (2).
3. The power supply system for the new energy automobile based on the internet of things as claimed in claim 2, wherein: equal fixedly connected with water pump (5) on the inner wall of main water-cooling chamber (31) and vice water-cooling chamber (32), the water inlet end fixedly connected with inlet tube (6) of water pump (5), the play water end fixedly connected with a plurality of outlet pipes (7) of water pump (5), the inside of main water-cooling chamber (31) and vice water-cooling chamber (32) all is equipped with the cooling water.
4. The power supply system for the new energy automobile based on the Internet of things as claimed in claim 3, wherein: the end part of the water outlet pipe (7) positioned in the auxiliary water-cooling cavity (32) penetrates through the inner walls of the two sides of the battery cavity (2) and extends into the main water-cooling cavity (31), and the end part of the water outlet pipe (7) positioned in the main water-cooling cavity (31) penetrates through the inner walls of the two sides of the battery cavity (2) and extends into the auxiliary water-cooling cavity (32).
5. The power supply system for the new energy automobile based on the Internet of things as claimed in claim 4, wherein: the outer end fixedly connected with of outlet pipe (7) is scattered water pipe (9), scattered water pipe (9) are located battery chamber (2), fixedly connected with electric valve (8) on scattered water pipe (9).
6. The power supply system for the new energy automobile based on the Internet of things according to claim 5, characterized in that: and the water pump (5) and the electric valve (8) are both connected with a fire protection system.
7. The power supply system for the new energy automobile based on the internet of things as claimed in claim 2, wherein: a plurality of ventilation holes (10) which are uniformly distributed are formed in the side wall of the heat dissipation cavity (4), and the ventilation holes (10) are communicated with the outside.
8. The power supply system for the new energy automobile based on the internet of things as claimed in claim 2, wherein: the outer surface of the battery box (1) is coated with a heat insulation layer.
9. The power supply system for the new energy automobile based on the Internet of things according to claim 1, characterized in that: the control method of the battery balance system comprises the following steps: setting the allowed voltage difference between the single batteries of the main battery pack as B1-B2, setting the allowed current difference between the single batteries of the main battery pack as C1-C2, detecting the voltage of the single batteries in real time through the single battery voltage detection module and the single battery current detection module, and controlling the charge and discharge of the relevant single batteries by the single battery charge and discharge module when detecting that the voltage difference between the single batteries exceeds B1-B2 or the voltage difference exceeds C1-C2, so as to control the voltage, the current and other parameters between the single batteries within an allowed range.
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| CN201910985494.6A CN111224178A (en) | 2019-10-17 | 2019-10-17 | New energy automobile power supply system based on thing networking |
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| CN201910985494.6A CN111224178A (en) | 2019-10-17 | 2019-10-17 | New energy automobile power supply system based on thing networking |
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Application publication date: 20200602 |