CN111641006B - Light power battery pack - Google Patents
Light power battery pack Download PDFInfo
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- CN111641006B CN111641006B CN202010715890.XA CN202010715890A CN111641006B CN 111641006 B CN111641006 B CN 111641006B CN 202010715890 A CN202010715890 A CN 202010715890A CN 111641006 B CN111641006 B CN 111641006B
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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
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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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
- H01M10/6554—Rods or plates
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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
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
- H01M10/6563—Gases with forced flow, e.g. by blowers
- H01M10/6565—Gases with forced flow, e.g. by blowers with recirculation or U-turn in the flow path, i.e. back and forth
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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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a light power battery pack, comprising: the battery pack comprises a shell, a battery pack and a control circuit, wherein a first heat insulation plate is arranged in the shell to divide the shell into a battery cavity and a control cavity; the first heat-insulating layer is laid on the bottom of the battery cavity and the side walls except the first heat-insulating plate; the heating plates are arranged at intervals around the periphery of the battery pack, and an exhaust fan is arranged between every two adjacent heating plates; the plurality of exhaust fans are arranged on the side walls except the first heat insulation plate at intervals, and the side wall between every two adjacent exhaust fans is provided with a radiating fin; the heat preservation units are respectively covered on the exhaust fans; an ambient temperature sensor; a battery temperature sensor; the control chip controls the starting and the closing of the heating plate, the exhaust fan and the motor according to the detected temperature and a preset program; an auxiliary power supply. The invention has the advantages that the battery pack is uniformly heated at low temperature, and the battery pack is rapidly radiated in time at high temperature, so that the battery pack can operate in a proper temperature range.
Description
Technical Field
The present invention relates to the field of battery applications. More particularly, the present invention relates to a lightweight power battery pack.
Background
The light power battery pack is mainly used for two-wheeled and three-wheeled electric vehicles, the rated voltage of the light power battery pack is usually 36V, 48V, 72V and the like, the propelling speed is much lower than that of an automobile, and the cruising ability is much shorter. At present, the device plays an important role in switching in urban traffic. When the light power battery pack is at low temperature, the normal operation of the light power battery pack is seriously influenced, the charging and discharging efficiency is low, and the irreversible attenuation of the battery capacity is caused more seriously, so that the light power battery pack is very important to be ensured to operate at proper temperature. And another problem, which is not serious in low temperature hazard, is a problem that continuously occurs and exists in the operation process of the battery pack, namely, a heat dissipation problem is contradictory to the low temperature, but is a problem that has to be solved.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide a lightweight power battery pack that uniformly heats the battery pack at low temperatures and rapidly dissipates heat in time at high temperatures to operate the battery pack within a suitable temperature range.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a lightweight power battery pack including a battery pack made up of a plurality of battery cells, including:
the battery pack comprises a shell, a battery pack and a control circuit, wherein a first heat insulation plate is arranged in the shell to divide the shell into a battery cavity and a control cavity;
the first heat insulation layer is laid at the bottom of the battery cavity and on the side wall except the first heat insulation plate, and a first insulation layer is laid on the first heat insulation layer;
the heating plates are arranged at intervals around the periphery of the battery pack, a second insulating layer is laid on the outer surfaces of the heating plates, an air draft fan is arranged in a space between every two adjacent heating plates, and air outlet ends of the air draft fans are arranged along the same clock direction;
the plurality of exhaust fans are arranged on the side wall of the battery cavity except the first heat insulation plate at intervals, and radiating fins are arranged on the side wall of the battery cavity between every two adjacent exhaust fans;
a plurality of heat preservation units, a plurality of heat preservation units cover respectively and locate a plurality of air outlet ends of airing exhaust fan, and be located the casing is outside, heat preservation unit includes:
a cylinder covered on the exhaust fan;
two ends of the rotating rod are respectively and rotatably arranged on the side wall of the cylinder body, the rotating rod is arranged along the radial direction of the cylinder body, and one end of the rotating rod penetrates out of the cylinder body;
the output end of the motor is fixedly connected with one end of the rotating rod penetrating out of the cylinder;
the rotating plate penetrates through the rotating rod along the axial direction of the rotating rod, and a flexible sealing layer is laid on the circumferential side wall of the rotating plate, wherein when the rotating plate is perpendicular to the axial direction of the rotating rod, the sealing layer is in contact with the inner side wall of the cylinder along the circumferential direction;
an ambient temperature sensor for detecting a temperature outside the housing;
a battery temperature sensor for detecting a temperature of the battery pack;
the control chip is arranged in the control cavity, electrically connected with the heating plate, the exhaust fan and the motor, and used for controlling the ambient temperature sensor and the battery temperature sensor to detect the temperature in a preset period and controlling the heating plate, the exhaust fan and the motor to be started and shut down according to the detected temperature and a preset program;
and the auxiliary power supply is arranged in the control cavity, and the auxiliary power supply supplies power to the control chip, the heating plate, the exhaust fan and the motor.
Preferably, a second heat insulation plate is arranged in the control cavity, and the control chip and the auxiliary power supply are respectively located on two sides of the second heat insulation plate.
Preferably, the sealing layer is made of rubber.
Preferably, the distance between two adjacent exhaust fans is 3-5 cm.
Preferably, the number of the heating plates and the number of the exhaust fans are four, and the four heating plates and the four exhaust fans form a rectangular-like structure surrounding the periphery of the battery pack.
Preferably, the first heat insulation board and the second heat insulation board are both internally provided with vacuum layers.
Preferably, a second heat insulation layer is laid on the rotating plate.
Preferably, the first heat preservation layer and the second heat preservation layer both include the cotton layer of PU bubble and the cotton layer of fire prevention EVA bubble that apply from inside to outside in proper order.
Preferably, the material of the first insulating layer is aluminum silicate fiber, and the material of the second insulating layer is an epoxy plate.
Preferably, the control chip controls the heating plate, the exhaust fan and the motor to be started and shut down according to a preset program according to the detected temperature, and the control chip comprises the following programs:
when the ambient temperature sensor detects that the temperature is lower than a preset first threshold value and the battery temperature sensor detects that the temperature is lower than a preset second threshold value, the motor is controlled to drive the rotating rod to rotate until the rotating plate seals the barrel, the air draft fan is controlled to be started at the same time, and the heating plate is controlled to be heated at the same time until the temperature detected by the battery temperature sensor reaches a preset third threshold value, and the heating plate and the air draft fan are closed;
when the temperature detected by the environment temperature sensor is higher than a preset fourth threshold value and the temperature detected by the battery temperature sensor is higher than a preset fifth threshold value, the motor is controlled to drive the rotating rod to rotate until the rotating plate is parallel to the axial direction of the cylinder, and the exhaust fan is controlled to be started at the same time until the temperature detected by the battery temperature sensor reaches a preset sixth threshold value, and the exhaust fan is closed.
The invention at least comprises the following beneficial effects:
first, through the temperature of the environment temperature sensor periodic detection environment, the temperature of the battery pack is periodically detected to the battery temperature sensor, judge that the battery pack is in the condition of operation under the suitable temperature at present, if the temperature is unsuitable, then start or close some heat dissipation or heat retaining parts through control chip automatic control, carry out the even heating to the battery pack during the low temperature, in time dispel the heat fast to the battery pack during the high temperature, make the battery pack operate in suitable temperature range.
And secondly, after the first heat insulation plate is separated into a battery cavity and a control cavity, when the battery cavity is heated in the later period, the normal work of a control chip and the like in the control cavity cannot be influenced by heat generated by charging or discharging of the battery pack.
Third, when the group battery temperature was lower, start the hot plate, can heat by the group battery, including updraft ventilator's circulated air effect, can make the group battery absorb the heat more even, avoid local high temperature, influence group battery performance.
Fourthly, when heat dissipation is needed, the motor can be started to drive the rotating rod to rotate, so that the rotating plate rotates to a position parallel to the axial direction of the cylinder, and the exhaust fan is started, so that heat can be discharged from the cylinder, and the purpose of timely and rapid heat dissipation is achieved. When heat preservation is needed, the motor can be started to drive the rotating rod to rotate, so that the rotating plate rotates to the position vertical to the axial direction of the cylinder body, the cylinder body is sealed, heat loss is reduced, and the purpose of heat preservation is achieved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a plan view of the battery pack according to one embodiment of the present invention;
FIG. 2 is a detailed view of the heat-retaining unit according to one embodiment of the present invention;
fig. 3 is a detailed view of the rotating plate according to one embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be understood that in the following description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are used only for convenience in describing the present invention and for simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the present invention provides a light-weight power battery pack, including a battery pack 1 composed of a plurality of battery cells, including:
the battery pack comprises a shell 2, a first heat insulation plate 23 is arranged in the shell 2 to divide the shell 2 into a battery cavity 21 and a control cavity 22, and the battery pack 1 is arranged in the center of the battery cavity 21; the four sides are spaced from the inner wall of the battery chamber 21 to leave space for the following components to be mounted. After the first heat insulation plate 23 is adopted to divide the battery cavity 21 and the control cavity 22, the normal work of the control chip 8 and the like in the control cavity 22 cannot be influenced by heat generated by charging or discharging of the battery pack 1 when the battery cavity 21 is heated in the later period.
A first heat insulating layer 24, which is laid on the bottom of the battery cavity 21 and the side walls except the first heat insulating plate 23, wherein a first insulating layer is laid on the first heat insulating layer 24; the whole battery cavity 21 is insulated, and the heat loss is reduced.
The heating plates 3 are arranged at intervals around the periphery of the battery pack 1, a second insulating layer is laid on the outer surfaces of the heating plates 3, an air draft fan 4 is arranged in a space between every two adjacent heating plates 3, and air outlet ends of the air draft fans 4 are arranged along the same clock direction; when 1 temperature of group battery is lower, start hot plate 3, can heat by group battery 1, including updraft ventilator 4's circulated air effect, can make group battery 1 absorb the heat more even, avoid local high temperature, influence group battery 1 performance.
The exhaust fans 5 are arranged on the side wall of the battery cavity 21 except the first heat insulation plate 23 at intervals, and the side wall of the battery cavity 21 between two adjacent exhaust fans 5 is provided with a radiating fin 6; when the temperature of the battery pack 1 is high, such as in a high-temperature environment, during a charging or discharging process, the battery pack 1 is helped to quickly dissipate heat in time, so that the battery pack 1 is kept operating at a proper temperature.
A plurality of heat preservation units 7, a plurality of heat preservation units 7 cover respectively and locate a plurality of air-out ends of exhausting fan 5 to be located 2 outsides of casing, heat preservation unit 7 includes:
a cylinder 71 covered on the exhaust fan 5; two ends of the rotating rod 72 are respectively and rotatably arranged on the side wall of the cylinder 71, the rotating rod 72 is arranged along the radial direction of the cylinder 71, and one end of the rotating rod 72 penetrates out of the cylinder 71;
the motor 73 is arranged outside the cylinder 71, and the output end of the motor 73 is fixedly connected with one end of the rotating rod 72, which penetrates out of the cylinder 71;
a rotating plate 74 which penetrates through the rotating rod 72 along the axial direction of the rotating rod 72, wherein a flexible sealing layer 75 is laid on the circumferential side wall of the rotating plate 74, and when the rotating plate 74 is perpendicular to the axial direction of the rotating rod 72, the sealing layer 75 is in contact with the inner side wall of the cylinder 71 along the circumferential direction; when heat dissipation is needed, the motor 73 can be started to drive the rotating rod 72 to rotate, so that the rotating plate 74 rotates to a position axially parallel to the cylinder 71, and the exhaust fan 5 is started, so that heat can be discharged from the cylinder 71, and the purpose of timely and rapid heat dissipation is achieved. When heat preservation is needed, the motor 73 can be started to drive the rotating rod 72 to rotate, so that the rotating plate 74 rotates to a position which is vertical to the axial direction of the cylinder 71, the cylinder 71 is sealed, heat dissipation is reduced, and the purpose of heat preservation is achieved.
An ambient temperature sensor for detecting the temperature outside the housing 2; and the environmental temperature is reflected in time.
A battery temperature sensor for detecting the temperature of the battery pack 1; reflecting the temperature of the battery pack 1 in time.
The control chip 8 is arranged in the control cavity 22, the control chip 8 is electrically connected with the heating plate 3, the exhaust fan 5, the exhaust fan 4 and the motor 73, and the control chip 8 is used for controlling the ambient temperature sensor and the battery temperature sensor to detect the temperature in a preset period and controlling the heating plate 3, the exhaust fan 5, the exhaust fan 4 and the motor 73 to be started and closed according to the detected temperature and a preset program; the heating plate 3, the exhaust fan 5, the exhaust fan 4 and the motor 73 are controlled to be started and closed in time according to the ambient temperature and the temperature of the battery pack 1, so that the battery pack 1 can always run under a relatively proper temperature condition, and the battery pack 1 can be guaranteed to exert high-quality performance. For example, when the ambient temperature is lower than 20 ℃ and the temperature of the battery pack 1 is lower than 20 ℃, the exhaust fan 4 and the heating plate 3 are started to heat, the motor 73 is started to drive the rotating rod 72 to rotate, the rotating plate 74 is rotated to the position of the closed cylinder 71, the heat dissipation is reduced, the temperature of the battery pack 1 is increased, and when the temperature of the battery pack 1 is increased to a certain temperature, such as 25 ℃, the heating plate 3 is closed. For example, when the ambient temperature is higher than 30 ℃, or the temperature of the battery pack 1 is higher than 30 ℃, the starting motor 73 drives the rotating rod 72 to rotate, so that the rotating plate 74 rotates to a position parallel to the axial direction of the cylinder 71, and then the exhaust fan 5 is started to dissipate heat, so that the heat is timely and quickly discharged from the battery cavity 21, and the heat dissipation of the battery pack 1 is facilitated.
And the auxiliary power supply 9 is arranged in the control cavity 22, and the auxiliary power supply 9 supplies power to the control chip 8, the heating plate 3, the exhaust fan 5, the exhaust fan 4 and the motor 73. The auxiliary power supply 9 is separately arranged to supply power to the devices of the control part, which helps to ensure that the battery pack 1 operates at a proper operating temperature for a longer time, thereby protecting the battery pack 1.
In the above technical solution, the ambient temperature is periodically detected by the ambient temperature sensor, the temperature of the battery pack 1 is periodically detected by the battery temperature sensor, and it is determined that the battery pack 1 is currently in a suitable temperature for operation, if the temperature is not suitable, some heat dissipation or heat preservation components are automatically controlled to be started or closed by the control chip 8, for example, a temperature threshold is set, and when the temperature reaches the temperature threshold, the starting or the closing is triggered. When the ambient temperature is lower than 20 ℃ and the temperature of the battery pack 1 is lower than 20 ℃, the air draft fan 4 and the heating plate 3 are started to heat, the rotating rod 72 is driven to rotate by the starting motor 73, the rotating plate 74 is rotated to the position of the closed cylinder 71, the heat loss is reduced, the temperature of the battery pack 1 is increased, and when the temperature of the battery pack 1 is increased to a certain temperature, such as 25 ℃, the heating plate 3 is closed. For example, when the ambient temperature is higher than 30 ℃, or the temperature of the battery pack 1 is higher than 30 ℃, the starting motor 73 drives the rotating rod 72 to rotate, so that the rotating plate 74 rotates to a position parallel to the axial direction of the cylinder 71, and then the exhaust fan 5 is started to dissipate heat, so that the heat is timely and quickly discharged from the battery cavity 21, and the heat dissipation of the battery pack 1 is facilitated.
In another technical scheme, a second heat insulation board 25 is arranged in the control cavity 22, and the control chip 8 and the auxiliary power supply 9 are respectively located on two sides of the second heat insulation board 25. The auxiliary power supply 9 also generates heat during charging and discharging, and in order to prevent the generated heat from affecting the operation of the control chip 8, a second heat insulation plate 25 is used for separating the two.
In another technical solution, the sealing layer 75 is made of rubber. When the cylinder 71 needs to be closed, the sealing performance of the rubber is good.
In another technical scheme, the distance between two adjacent exhaust fans 5 is 3-5 cm. According to the battery pack 1 size on the two-wheeled or three-wheeled electric vehicle commonly used, the conventional size of the shell 2, the interval of 3-5 cm is set, and air exhaust and heat dissipation can be well performed.
In another technical scheme, the quantity of heating plate 3 with induced draft fan 4's quantity is four, four heating plates 3 and four induced draft fan 4 form around in group battery 1 class rectangle structure all around. The group battery 1 on two-wheeled or the tricycle electric motor car all is the cuboid generally, consequently, sets up hot plate 3 by four sides, sets up induced draft fan 4 by four angles, can form the inside circulation wind, to group battery 1 even heating.
In another technical scheme, the first heat insulation board 23 and the second heat insulation board 25 are both internally provided with vacuum layers. The vacuum layer has a good heat insulation effect and is light, the whole weight of the whole battery pack 1 is reduced, and the electric energy of the battery pack 1 is more favorably used for an electric vehicle instead of loading the battery pack itself.
In another technical scheme, a second insulating layer 76 is laid on the rotating plate 74. Further improving the heat preservation function of the battery cavity 21.
In another technical scheme, the first insulating layer 24 and the second insulating layer 76 both comprise a PU foam layer and a fireproof EVA foam layer which are sequentially coated from inside to outside. The PU foam layer and the fireproof EVA foam layer both have good heat insulation performance, and simultaneously have good insulation effect, and the fireproof EVA foam layer with the fireproof effect is also utilized for avoiding fire.
In another technical scheme, the first insulating layer is made of aluminum silicate fibers, and the second insulating layer is made of an epoxy plate. Further improve insulating effect, avoid group battery 1 electric leakage.
In another technical scheme, the control chip 8 controls the heating plate 3, the exhaust fan 5, the exhaust fan 4 and the motor 73 to be started and shut down according to a preset program according to the detected temperature, and the control chip comprises the following programs:
when the ambient temperature sensor detects that the temperature is lower than a preset first threshold, for example, the first threshold may be set to 20 ℃, and the battery temperature sensor detects that the temperature is lower than a preset second threshold, for example, the second threshold is also set to 20 ℃, the motor 73 is controlled to drive the rotating rod 72 to rotate until the rotating plate 74 closes the cylinder 71, and the air draft fan 4 is simultaneously controlled to start, and the heating plate 3 is simultaneously controlled to heat until the temperature detected by the battery temperature sensor reaches a preset third threshold, for example, the third threshold is set to 25 ℃, and the heating plate 3 and the air draft fan 4 are turned off;
when the temperature detected by the ambient temperature sensor is higher than a preset fourth threshold, for example, the fourth threshold is set to 30 ℃, and the temperature detected by the battery temperature sensor is higher than a preset fifth threshold, which may also be set to 30 ℃, the motor 73 is controlled to drive the rotating rod 72 to rotate until the rotating plate 74 is parallel to the axial direction of the cylinder 71, and the exhaust fan 5 is simultaneously controlled to start until the temperature detected by the battery temperature sensor reaches a preset sixth threshold, for example, the sixth threshold may be set to 25 ℃, and the exhaust fan 5 is turned off. The battery pack 1 is operated in a relatively proper temperature range, which is helpful for improving the comprehensive performance of the battery pack 1.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. Light-duty power battery pack, its characterized in that, including the group battery that a plurality of electric cores are constituteed, include:
the battery pack comprises a shell, a battery pack and a control circuit, wherein a first heat insulation plate is arranged in the shell to divide the shell into a battery cavity and a control cavity;
the first heat insulation layer is laid at the bottom of the battery cavity and on the side wall except the first heat insulation plate, and a first insulation layer is laid on the first heat insulation layer;
the heating plates are arranged at intervals around the periphery of the battery pack, a second insulating layer is laid on the outer surfaces of the heating plates, an air draft fan is arranged in a space between every two adjacent heating plates, and air outlet ends of the air draft fans are arranged along the same clock direction;
the plurality of exhaust fans are arranged on the side wall of the battery cavity except the first heat insulation plate at intervals, and radiating fins are arranged on the side wall of the battery cavity between every two adjacent exhaust fans;
a plurality of heat preservation units, a plurality of heat preservation units cover respectively and locate a plurality of air outlet ends of airing exhaust fan, and be located the casing is outside, heat preservation unit includes:
a cylinder covered on the exhaust fan;
two ends of the rotating rod are respectively and rotatably arranged on the side wall of the cylinder body, the rotating rod is arranged along the radial direction of the cylinder body, and one end of the rotating rod penetrates out of the cylinder body;
the output end of the motor is fixedly connected with one end of the rotating rod penetrating out of the cylinder;
the rotating plate penetrates through the rotating rod along the axial direction of the rotating rod, and a flexible sealing layer is laid on the circumferential side wall of the rotating plate, wherein when the rotating plate is perpendicular to the axial direction of the rotating rod, the sealing layer is in contact with the inner side wall of the cylinder along the circumferential direction;
an ambient temperature sensor for detecting a temperature outside the housing;
a battery temperature sensor for detecting a temperature of the battery pack;
the control chip is arranged in the control cavity, electrically connected with the heating plate, the exhaust fan and the motor, and used for controlling the ambient temperature sensor and the battery temperature sensor to detect the temperature in a preset period and controlling the heating plate, the exhaust fan and the motor to be started and shut down according to the detected temperature and a preset program;
and the auxiliary power supply is arranged in the control cavity, and the auxiliary power supply supplies power to the control chip, the heating plate, the exhaust fan and the motor.
2. The light-duty power battery pack according to claim 1, wherein a second heat insulating plate is provided in the control chamber, and the control chip and the auxiliary power supply are respectively located at both sides of the second heat insulating plate.
3. A light-weight power battery as recited in claim 1, wherein the sealant is rubber.
4. A light-weight power battery pack according to claim 1, wherein the distance between two adjacent exhaust fans is 3 to 5 cm.
5. The lightweight power battery pack as recited in claim 1, wherein the number of the heating plates and the number of the suction fans are four, and four heating plates and four suction fans form a rectangular-like structure around the periphery of the battery pack.
6. The light-weight power battery pack according to claim 2, wherein the first heat insulating plate and the second heat insulating plate are both internally provided as a vacuum layer.
7. A light-weight power battery pack according to claim 1, wherein a second layer of insulation is applied to the rotating plate.
8. The light-weight power battery pack according to claim 7, wherein the first insulating layer and the second insulating layer are structurally composed of a PU foam layer and a fireproof EVA foam layer which are sequentially coated from inside to outside.
9. The light-duty power battery of claim 1, wherein the material of said first insulating layer is aluminum silicate fiber and the material of said second insulating layer is epoxy board.
10. The light weight power battery pack according to claim 1, wherein the control chip controls the heating plate, the exhaust fan, the suction fan, and the motor to be turned on and off according to a preset program based on the detected temperature includes the following procedures:
when the ambient temperature sensor detects that the temperature is lower than a preset first threshold value and the battery temperature sensor detects that the temperature is lower than a preset second threshold value, the motor is controlled to drive the rotating rod to rotate until the rotating plate seals the barrel, the air draft fan is controlled to be started at the same time, and the heating plate is controlled to be heated at the same time until the temperature detected by the battery temperature sensor reaches a preset third threshold value, and the heating plate and the air draft fan are closed;
when the temperature detected by the environment temperature sensor is higher than a preset fourth threshold value and the temperature detected by the battery temperature sensor is higher than a preset fifth threshold value, the motor is controlled to drive the rotating rod to rotate until the rotating plate is parallel to the axial direction of the cylinder, and the exhaust fan is controlled to be started at the same time until the temperature detected by the battery temperature sensor reaches a preset sixth threshold value, and the exhaust fan is closed.
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| CN107437644A (en) * | 2017-07-31 | 2017-12-05 | 辽宁工业大学 | A kind of Vehicular battery group temperature control equipment and its control method |
| CN108054465B (en) * | 2017-12-29 | 2023-11-07 | 泉州劲鑫电子有限公司 | High-efficient group battery cooling system |
| CN108155445B (en) * | 2018-02-01 | 2019-08-13 | 长乐致远技术开发有限公司 | The humidity control system of batteries of electric automobile |
| CN208723040U (en) * | 2018-02-05 | 2019-04-09 | 畅诺冷热控制技术(上海)有限公司 | A kind of power battery pack temperature control device |
| JP7263713B2 (en) * | 2018-08-23 | 2023-04-25 | 株式会社デンソー | Thermal insulation device |
| CN210668616U (en) * | 2019-10-11 | 2020-06-02 | 浙江中力机械有限公司 | Thermal management device for power lithium battery pack |
| CN111403846B (en) * | 2020-03-28 | 2022-12-30 | 哈尔滨工程大学 | Power battery thermal management system based on positive pressure direct blowing type air cooling optimization |
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