CN112002956B - Liquid cooling board, battery package, electric automobile and energy memory - Google Patents
Liquid cooling board, battery package, electric automobile and energy memory Download PDFInfo
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- CN112002956B CN112002956B CN202010847179.XA CN202010847179A CN112002956B CN 112002956 B CN112002956 B CN 112002956B CN 202010847179 A CN202010847179 A CN 202010847179A CN 112002956 B CN112002956 B CN 112002956B
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/6554—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
- H01M10/655—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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a liquid cooling plate, a battery pack, an electric automobile and an energy storage device, wherein the liquid cooling plate comprises: the water cooling device comprises a cover plate, a bottom plate, a water inlet pipeline and a water outlet pipeline, wherein the bottom plate is fixedly connected to the cover plate, the water inlet pipeline and the water outlet pipeline are fixedly connected to the cover plate, the bottom plate comprises a bottom plate body, a water inlet groove, a water outlet groove and a plurality of runner grooves, the water inlet groove and the water outlet groove are formed in the bottom plate body, cooling media can flow through the water inlet groove and the water outlet groove, the runner grooves are arranged at intervals, and the bottom plate body is fixed to the cover plate; the water outlet pipeline is communicated with the water outlet groove, the water inlet pipeline is communicated with the water inlet groove, and two ends of each runner groove are respectively communicated with the water inlet groove and the water outlet groove; wherein, the width of intake tank is greater than the width of basin goes out. According to the invention, the width of the water inlet groove of the liquid cooling plate is larger than that of the water outlet groove, so that the heat exchange efficiency of the battery close to the water outlet groove is improved, the temperature difference between the battery close to the water inlet groove and the battery close to the water outlet groove is smaller, and the cooling uniformity of the liquid cooling plate is improved.
Description
Technical Field
The invention relates to the field of power batteries, in particular to a liquid cooling plate, a battery pack, an electric automobile and an energy storage device.
Background
The power battery is an important component of the electric automobile, the high-voltage power battery can emit a large amount of heat energy in a working state, therefore, a good heat dissipation system is an important system for ensuring the charge and discharge performance and the service life of the power battery, and the liquid cooling plate is a key part of the heat management system.
In the traditional liquid cooling plate, the cross section of each part of the flow passage of the liquid cooling plate from the water inlet to the water outlet adopts the design of equal width. Because the runner is longer, the cooling medium is heated in the process of flowing through the liquid cooling plate, and the temperature of the cooling medium rises gradually along the flowing direction of the liquid cooling medium, so that the cooling capacity of the cooling medium along the flowing direction of the cooling medium is gradually reduced, the temperature difference between the battery in the water inlet area and the battery in the water outlet area of the liquid cooling plate is inevitably caused, and the performance of the battery is damaged and the service life of the battery is shortened due to the overlarge temperature difference.
Therefore, it is urgently needed to provide a liquid cooling plate, a battery pack, an electric automobile and an energy storage device to solve the technical problem that the temperature difference exists between the battery at the water inlet area of the liquid cooling plate and the battery at the water outlet area of the liquid cooling plate in the prior art.
Disclosure of Invention
The invention provides a liquid-liquid cooling plate, a battery pack, an electric vehicle and an energy storage device, and aims to solve the technical problem that in the prior art, the temperature difference exists between a battery at a water inlet area of the liquid-liquid cooling plate and a battery at a water outlet area of the battery.
The invention provides a liquid cooling plate, which is used for cooling a battery, and comprises: the water cooling device comprises a cover plate, a bottom plate, a water inlet pipeline and a water outlet pipeline, wherein the bottom plate is fixedly connected with the cover plate, the water inlet pipeline and the water outlet pipeline are fixedly connected with the cover plate, the bottom plate comprises a bottom plate body, a water inlet groove, a water outlet groove and a plurality of runner grooves, the water inlet groove and the water outlet groove are formed in the bottom plate body and used for cooling media to flow through, and the bottom plate body is fixed on the cover plate; the water inlet pipeline is communicated with the water inlet groove, the water outlet pipeline is communicated with the water outlet groove, and two ends of each runner groove are respectively communicated with the water inlet groove and the water outlet groove; wherein, the width of intake tank is greater than the width of basin goes out.
In a possible implementation manner of the present invention, a plurality of bosses are arranged on each of the runner grooves at intervals, each of the bosses is fixedly connected to the bottom of the runner groove, and the height of each of the bosses is smaller than the depth of the runner groove.
In one possible embodiment of the invention, the projections are arranged at equal intervals in the flow direction of the cooling medium.
In one possible embodiment of the invention, the distance between the projections decreases gradually in the flow direction of the cooling medium.
In a possible implementation manner of the present invention, the bottom plate body includes a horizontal portion and a vertical portion protruding from a surface of the horizontal portion in a direction close to the cover plate, the vertical portion is fixedly connected to the horizontal portion, the water inlet groove, the water outlet groove and the plurality of runner grooves are all opened on the horizontal portion, a bottom of the cover plate abuts against the horizontal portion, a side of the cover plate abuts against the vertical portion, and the cover plate is fixedly connected to the vertical portion.
In one possible embodiment of the invention, the length of the vertical portion in the direction toward the cover plate is the same as the plate thickness of the cover plate.
In a possible implementation manner of the present invention, the liquid cooling plate further includes a plurality of flow valves corresponding to the plurality of flow channel grooves one to one, a plurality of temperature sensors for detecting a temperature of the battery, and a controller, where the plurality of flow valves and the plurality of temperature sensors are respectively in communication connection with the controller, and the controller is configured to receive the temperature of the battery detected by the plurality of temperature sensors, and control opening degrees of the plurality of flow valves to adjust the temperature of the battery.
In a possible implementation manner of the present invention, the battery is disposed above the cover plate, the plurality of temperature sensors are disposed between the battery and the cover plate, and each of the runner grooves corresponds to at least two of the temperature sensors.
In one possible embodiment of the present invention, the plate thickness of the cover plate is 1mm to 5mm, the plate thickness of the bottom plate is 3mm to 10mm, the depth of each of the channel grooves is 2mm to 5mm, the width of each of the channel grooves is 8mm to 15mm, and the length of each of the channel grooves is the same as the length of the battery.
The invention also provides a battery pack, which comprises a plurality of batteries, an insulating heat-conducting pad and the liquid cooling plate in any one of the above implementation modes, wherein the insulating heat-conducting pad is arranged between the cover plate and the plurality of batteries.
The invention further provides an electric automobile which comprises the liquid cooling plate, wherein the liquid cooling plate is the liquid cooling plate in any one of the implementation modes.
The invention also provides an energy storage device which comprises the liquid cooling plate in any one of the implementation modes.
According to the invention, the width of the water inlet groove of the liquid cooling plate is larger than that of the water outlet groove, so that the flow velocity of the cooling medium in the water outlet groove is larger than that of the cooling medium in the water inlet groove under the condition that the flow of the cooling medium entering the liquid cooling plate is constant, the heat exchange efficiency of the battery close to the water outlet groove is improved, the temperature difference between the battery close to the water inlet groove and the battery close to the water outlet groove is smaller, and the cooling uniformity of the liquid cooling plate is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an exploded view of the overall structure of a liquid-cooled panel provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a base plate according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a boss in a runner groove according to an embodiment of the present invention;
FIG. 4 is a schematic view of another embodiment of a boss in a runner groove according to the present invention;
FIG. 5 is a schematic view of another angle structure of the liquid cooling plate according to the embodiment of the present invention;
FIG. 6 is a schematic illustration of the position of a flow valve provided by an embodiment of the present invention;
FIG. 7 is a schematic illustration of the operating principle of a flow valve provided by an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present disclosure, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The embodiment of the invention provides a liquid cooling plate, a battery pack, an electric vehicle and an energy storage device, which are described in detail below.
As shown in fig. 1, the liquid cooling plate 10 includes: the cooling water tank comprises a cover plate 100, a bottom plate 200, a water inlet pipeline 300 and a water outlet pipeline 400, wherein the bottom plate 200 is fixedly connected to the cover plate 100, the water inlet pipeline 300 and the water outlet pipeline 400 are fixedly connected to the cover plate 100, the bottom plate 200 comprises a bottom plate body 210, a water inlet groove 220, a water outlet groove 230 and a plurality of runner grooves 240 which are arranged on the bottom plate body 210 and used for cooling media to flow through, the bottom plate body 210 is fixedly connected to the cover plate 100, two ends of each runner groove 240 are respectively communicated with the water inlet groove 220 and the water outlet groove 230, the water inlet pipeline 300 is communicated with the water inlet groove 220, and the water outlet pipeline 400 is communicated with the water outlet groove 230; wherein, the width of the inlet channel 220 is larger than that of the outlet channel 230.
In the embodiment of the invention, by setting the width of the water inlet groove 220 of the liquid-cooled plate 10 to be greater than the width of the water outlet groove 230, the flow rate of the cooling medium entering the liquid-cooled plate 10 is greater than that of the cooling medium entering the water inlet groove 220 under the condition of a certain flow rate of the cooling medium, so that the heat exchange efficiency of the battery close to the water outlet groove 230 is improved, the temperature difference between the battery close to the water inlet groove 220 and the battery close to the water outlet groove 230 is smaller, and the cooling uniformity of the liquid-cooled plate 10 is improved.
As shown in fig. 1, the inlet channel 220 is parallel to the outlet channel 230, the flow channel 240 is perpendicular to the outlet channel 230, and the flow channel 240 is disposed at equal intervals. With the above arrangement, more runner grooves 240 can be arranged on the base plate 200 having the same area, that is: the space utilization of the base plate 200 is improved.
It should be noted that in order to further increase the flow rate of the cooling medium near the exit channels 230, in some embodiments of the present invention, the width of each runner channel 240 decreases in the direction of the cooling medium flow, as shown in FIG. 2.
Further, in order to enhance the cooling effect of the liquid cooling plate 10, in some embodiments of the present invention, as shown in fig. 3, a plurality of bosses 241 are spaced apart from each of the runner grooves 240, each boss 241 is fixedly connected to the bottom of each of the runner grooves 240, and the height of each boss 241 is smaller than the depth of the runner groove 240.
The plurality of bosses 241 are spaced at the bottom of each flow channel 240, so that the flowing state of the cooling medium in each flow channel 240 can be changed, specifically, if the bosses 241 are not provided, the flowing state of the cooling medium in the flow channel 240 is a steady flow, and if the bosses 241 are provided, when the cooling medium flows in the flow channel 240 and touches the bosses 241, the cooling medium rolls at the bosses 241 and becomes a turbulent flow, and the turbulent flow has a higher heat conduction coefficient than the steady flow, so that the heat exchange efficiency of the cooling medium can be improved, and the cooling effect of the liquid cooling plate 10 can be further improved. Meanwhile, the strength of the whole liquid cooling plate 10 can be increased by arranging the boss 241.
It should be noted that, in some embodiments of the present invention, as shown in fig. 3, each of the bosses 241 includes a first end 2411 and a second end 2412, each of the channel slots 240 includes a first side 2401 and a second side 2402, the first end 2411 of each of the bosses 241 in each of the channel slots 240 is equidistant from the first side 2401 of the channel slot 240, and the second end 2412 of each of the bosses 241 in each of the channel slots 240 is equidistant from the second side 2402 of the channel slot 240.
Further, to simplify the manufacturing process, the distance between the first end 2411 of each boss 241 in each channel groove 240 and the first side 2401 of the channel groove 240 is 0, and/or the distance between the second end 2412 of each boss 241 in each channel groove 240 and the second side 2402 of the channel groove 240 is 0.
It should be noted that: the length of each of the bosses 241 in each of the flow channel grooves 240 in the width direction of the flow channel groove 240 may be equal or may not be equal.
It should be noted that: in some embodiments of the present invention, the bosses 241 in the flow channel grooves 240 are arranged at equal intervals along the flow direction of the cooling medium, but in order to further improve the cooling effect of the liquid-cooled plate 10, the distance between the bosses 241 in each flow channel groove 240 is gradually decreased along the flow direction of the cooling medium, and the degree of rolling of the cooling medium is greater as the distance between the bosses 241 is decreased, so that the heat exchange efficiency of the cooling medium is higher, and the purpose of improving the cooling effect of the liquid-cooled plate 10 is achieved.
To further enhance the cooling effect of the liquid-cooled plate 10, in some embodiments of the present invention, as shown in fig. 4, the bosses 241 in each runner groove 240 are staggered, that is: two adjacent bosses 241 are disposed in the same channel groove 240, wherein a first end 2411 of one boss 241 is fixedly connected to the first side 2401 of the channel groove 240, and a second end 2412 of the other boss 241 is fixedly connected to the second side 2402 of the channel groove 240. Through the arrangement, the flowing direction of the cooling medium in the flow channel groove 240 can be effectively changed, the fluid can be enabled to flow in a rotary bending mode, impact is generated between the fluid and the fluid flowing in a straight line in the rotary bending flowing process, turbulence is formed, when the flowing state of the cooling medium is turbulent, the heat conductivity coefficient of the cooling medium can be increased, a better heat conduction effect is achieved, and the purpose of further improving the cooling effect of the liquid cooling plate 10 can be achieved.
It should be understood that the cross-section of the boss 241 may be any one of rectangular, trapezoidal, semi-circular, etc. When the cross section of the boss 241 is rectangular or trapezoidal, the boss 241 needs to be rounded, so that the damage of the boss 241 and the influence on the cooling effect caused by the impact of the cooling medium are avoided.
The size of the boss 241 can be adjusted according to actual requirements, and is not specifically limited herein.
Further, as shown in fig. 5, the bottom plate body 210 includes a horizontal portion 211 and a vertical portion 212 protruding from the surface of the horizontal portion 211 along a direction close to the cover plate 100, the vertical portion 212 is fixedly connected to the horizontal portion 211, the water inlet groove 300, the water outlet groove 400 and the plurality of runner grooves 240 are all opened on the horizontal portion 211, the bottom of the cover plate 100 abuts against the horizontal portion 211, the side of the cover plate 100 abuts against the vertical portion 212, and the cover plate 100 is fixedly connected to the vertical portion 212.
Through the arrangement, the vertical part 212 has a limiting effect on the cover plate 100, and when the cover plate 100 and the base plate 200 are fixed, the cover plate 100 is only required to be placed on the horizontal part 211, so that the installation process of the liquid cooling plate is simplified. Meanwhile, the vertical part 212 is additionally arranged, so that the liquid leakage risk of the liquid cooling plate 10 can be reduced, and the safety and reliability of the liquid cooling plate 10 are improved.
It should be understood that: the cover plate 100 and the vertical portion 212 may be fixed by fasteners, that is, through holes are formed in the cover plate 100 and the vertical portion 212, and the fasteners pass through the through holes in the cover plate 100 and the vertical portion 212 to fasten. The fasteners may be screws, rivets, or the like, to fixedly connect the cover plate 100 and the vertical portion 212.
The cover plate 100 and the vertical portion 212 may also be fixedly connected by welding. The fixed connection of the cover plate 100 and the vertical part 212 is realized in a welding mode, the connection position of the cover plate 100 and the vertical part 212 can be sealed without structures such as sealing glue or sealing gaskets, the structure is simplified, the leakage of cooling media can be avoided, and the safety and reliability of the liquid cooling plate 10 are improved.
Further, in order to prevent the cooling medium from flowing back and affecting the cooling effect of the liquid-cooled plate 10, in some embodiments of the present invention, an inclined angle is formed between the horizontal portion 211 and the cover plate 100 along the flowing direction of the cooling medium.
Preferably, the angle of inclination is in the range of 5 ° to 20 °.
Further, as shown in fig. 5, the length of the vertical portion 212 in the direction close to the lid plate 100 is the same as the plate thickness of the lid plate 100. By the above arrangement, the space utilization of the liquid cooling panel 10 can be improved.
Specifically, in some embodiments of the present invention, the plate thickness of the cap plate 100 is 1mm to 5mm, the plate thickness of the base plate 200 is 3mm to 10mm, the depth of each runner groove 240 is 2mm to 5mm, the width of each runner groove 240 is 8mm to 15mm, and the length of each runner groove 240 is the same as the length of the battery.
Preferably, the plate thickness of the cover plate 100 is 2mm, the plate thickness of the base plate 200 is 5mm, the depth of each runner groove 240 is 3mm, and the width of each runner groove 240 is 10 mm.
Further, in order to improve the uniformity of the overall temperature of the battery, in some embodiments of the present invention, as shown in fig. 6 and 7, the liquid cooling plate 10 further includes a plurality of flow valves 500 corresponding to the plurality of flow channel grooves 240 one by one, a plurality of temperature sensors 600 for detecting the temperature of the battery, and a controller 700, wherein the plurality of flow valves 500 and the plurality of temperature sensors 600 are respectively in communication connection with the controller 700, and the controller 700 is configured to receive the temperatures of the battery detected by the plurality of temperature sensors 600 and control the opening degrees of the plurality of flow valves 500 to adjust the temperature of the battery.
Specifically, the controller 700 is preset with a corresponding relationship between the temperature of the battery and the opening degree of the flow valve 500, and when the controller 700 receives the temperature of the battery detected by the temperature sensor 600, the controller 700 generates a control command to indicate the opening degree of the flow valve 500, and controls the flow rate of the cooling medium entering each channel groove 240 by controlling the opening degree of the flow valve 500, thereby implementing the adjustment of the temperature of the battery.
In some embodiments of the present invention, a temperature sensor 600 is corresponding to each channel 240, and the flow rate of the cooling medium in each channel 240 is controlled by the temperature sensor 600, the flow valve 500 corresponding to the temperature sensor, and the controller 700.
However, when the length of the battery along the flowing direction of the cooling medium is long, when each flow channel groove 240 corresponds to only one temperature sensor 600, the temperature at each position of the battery cannot be detected in real time, so that the temperature difference of the battery along the flowing direction of the cooling medium exists.
Therefore, in some embodiments of the present invention, each of the channel grooves 240 corresponds to at least two temperature sensors 600, and when the temperature of the battery detected by any one of the at least two temperature sensors 600 exceeds a threshold temperature, the flow rate of the cooling medium entering the channel groove 240 is increased by the flow rate valve 500 through the controller 700, so as to further improve the cooling effect of the liquid cooling plate 10 and achieve the uniformity of the battery temperature.
It should be understood that: the number of the temperature sensors 600 corresponding to each flow channel groove 240 may be adaptively adjusted according to the length and width of the battery to achieve uniformity of the battery temperature, which is not specifically limited herein.
It should also be understood that when the liquid cooled plate 10 is used to cool a battery with a control system, the controller 700 may be the control system of the battery. For example: when the liquid cooling plate 10 cools the BATTERY pack, since the BATTERY pack is provided with a BATTERY pack management system (BATTERY MANAGEMENT SYSTEM, BMS), the liquid cooling plate 10 does not need to be provided with the controller 700, and the plurality of temperature sensors 600 and the plurality of flow valves 500 can be directly connected with the BMS in a communication manner, so that the structure of the liquid cooling plate 10 is simplified.
It should be noted that, in some embodiments of the present invention, the battery is disposed on the cover plate 100, and the plurality of temperature sensors 600 are disposed between the battery and the cover plate 100.
It should be noted that, in the embodiment of the present invention, the liquid cooling medium flowing through the liquid cooling plate 10 is water, which is low in cost.
It should be further noted that, when the temperature of the battery is lower than the working temperature of the battery, the liquid cooling plate 10 may also heat the battery, so as to ensure the normal use of the battery, specifically, the external heating device heats the cooling medium, and the purpose of increasing the temperature of the battery is achieved through the heat exchange between the cooling medium and the battery.
As shown in fig. 8, the embodiment of the present invention further provides a battery pack 1, in which the battery pack 1 includes a plurality of batteries 20, an insulating and heat-insulating pad 20, and the liquid cooling plate 10 in any of the above embodiments, and the insulating and heat-conducting pad 30 is disposed between the cover plate 100 and the plurality of batteries 20.
Through setting up insulating heat conduction pad 30, the area of contact between multiplicable these a plurality of batteries 20 and the liquid cooling plate 10 to increase heat exchange efficiency, effectively cool down to these a plurality of batteries 20. Meanwhile, through the arrangement of the insulating heat conducting pad 30, the plurality of batteries 20 and/or the liquid cooling plate 10 can play a role in buffering when being impacted, so that the liquid cooling plate 10 or the batteries 20 are prevented from being damaged, and the safety of the battery pack 1 is further improved.
In some embodiments of the present invention, the insulating thermal pad 30 is made of silicone.
The water inlet groove 220 of the embodiment of the invention has larger width, large flow section of the cooling medium, low flow velocity of the cooling medium, small heat exchange coefficient, smaller width of the water outlet groove 230, small flow section of the cooling medium, large flow velocity of the cooling medium and large heat exchange coefficient. Although along the direction that the cooling medium flows through, the temperature of the cooling medium is gradually increased by heating, but because the width of the water inlet groove 220 is greater than the width of the water outlet groove 230, the flow rate of the cooling medium is increased, the heat exchange coefficient is gradually increased, the defect that the heat exchange effect is poor due to the temperature rise of the cooling medium can be overcome by the increase of the heat exchange coefficient, so that the cooling effect of the battery 20 close to the position of the water outlet groove 230 is improved, the cooling effect of the battery 20 close to the position of the water outlet groove 230 is basically consistent with the cooling effect of the battery 20 close to the position of the water inlet groove 220, the temperature difference between the position of the battery 20 close to the water inlet groove 220 and the position of the water outlet groove 230 is eliminated, the performance of the battery pack 1 can be improved, and the service life of the battery pack 1 is prolonged.
It should be noted that, in the embodiment of the present invention, each battery 20 in the plurality of batteries 20 has the same size, specifically, the length of the battery 20 is 600mm to 1200mm, the length of the battery 20 is 4 to 20 times the width of the battery 20, and preferably, the width of the battery 20 is an integral multiple of the width of the runner groove 240 of the liquid cooling plate 10, that is: the same runner groove 240 is prevented from cooling two adjacent batteries 20 at the same time, so that the temperature of one battery 20 is affected when the temperature of the other battery 20 is to be adjusted, and the accuracy of temperature adjustment of the liquid cooling plate 10 is improved.
The embodiment of the invention also provides an electric automobile which comprises the liquid cooling plate 10 in any one of the embodiments.
The embodiment of the invention also provides an energy storage device, and the energy storage device comprises the liquid cooling plate 10 in any one of the embodiments.
To sum up, in the embodiment of the present invention, by setting the width of the water inlet groove 220 of the liquid-cooled plate 10 to be greater than the width of the water outlet groove 230, when the flow rate of the cooling medium entering the liquid-cooled plate 10 is constant, the flow rate of the cooling medium in the water outlet groove 230 is greater than the flow rate of the cooling medium in the water inlet groove 220, so as to improve the heat exchange efficiency of the battery near the water outlet groove 230, so that the temperature difference between the battery near the water inlet groove 220 and the battery near the water outlet groove 230 is small, and the cooling uniformity of the liquid-cooled plate 10 is improved; meanwhile, the arrangement mode of the bosses 241 and 241 further improves the cooling effect of the liquid cooling plate 10; in addition, the embodiment of the invention is also provided with a flow valve 500, a temperature sensor 600 and a controller 700, so as to detect the temperatures of a plurality of positions of the battery and realize the uniformity of the temperature of the battery.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again. In specific implementation, the above units or structures may be implemented as independent entities, or may be combined arbitrarily and implemented as one or several entities, which is not described herein again.
The above detailed description is provided for a liquid cooling plate and a battery pack according to the embodiments of the present invention, and the principle and the implementation of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the structure and the core concept of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a liquid cooling board for cool down the battery, the liquid cooling board includes: the water cooling device comprises a cover plate, a bottom plate, a water inlet pipeline and a water outlet pipeline, wherein the bottom plate is fixedly connected with the cover plate, and the water inlet pipeline and the water outlet pipeline are fixedly connected with the cover plate; the water inlet pipeline is communicated with the water inlet groove, and the water outlet pipeline is communicated with the water outlet groove; two ends of each runner groove are respectively communicated with the water inlet groove and the water outlet groove; the width of the water inlet groove is larger than that of the water outlet groove;
a plurality of bosses are arranged on each runner groove at intervals, each boss is fixedly connected to the bottom of the runner groove, and the height of each boss is smaller than the depth of the runner groove;
the bottom plate body comprises a horizontal part and a vertical part which is convexly arranged on the surface of the horizontal part along the direction close to the cover plate, the vertical part is fixedly connected with the horizontal part, the water inlet groove, the water outlet groove and the multiple runner grooves are all arranged on the horizontal part, the bottom of the cover plate is abutted against the horizontal part, the side part of the cover plate is abutted against the vertical part, and the cover plate is fixedly connected with the vertical part;
the horizontal portion and the cover plate form an inclination angle therebetween in a flowing direction of the cooling medium.
2. A liquid cooled plate according to claim 1 wherein each of said lands is equally spaced in the direction of flow of the cooling medium.
3. The liquid cooled plate of claim 1, wherein the spacing between each of said lands decreases in the direction of flow of the cooling medium.
4. The liquid cooling plate of claim 1, wherein the vertical portion has a length in a direction close to the cover plate which is the same as a plate thickness of the cover plate.
5. The liquid cooling plate of claim 1, further comprising a plurality of flow valves corresponding to the plurality of channel grooves one to one, a plurality of temperature sensors for detecting the temperature of the battery, and a controller, wherein the plurality of flow valves and the plurality of temperature sensors are respectively in communication connection with the controller, and the controller is configured to receive the temperature of the battery detected by the plurality of temperature sensors and control the opening degrees of the plurality of flow valves to adjust the temperature of the battery.
6. The liquid cooling panel of claim 5, wherein the battery is disposed above the cover plate, the plurality of temperature sensors are disposed between the battery and the cover plate, and at least two of the temperature sensors are disposed in each of the runner channels.
7. The liquid cooling plate of claim 1, wherein the plate thickness of the cover plate is 1mm to 5mm, the plate thickness of the base plate is 3mm to 10mm, the depth of each of the runner grooves is 2mm to 5mm, the width of each of the runner grooves is 8mm to 15mm, and the length of each of the runner grooves is the same as the length of a battery.
8. A battery pack comprising a plurality of batteries, an insulating thermal pad, and the fluid-cooled plate of any one of claims 1-7, wherein the insulating thermal pad is disposed between the cover plate and the plurality of batteries.
9. An electric vehicle comprising a liquid-cooled panel according to any one of claims 1 to 7.
10. An energy storage device comprising a liquid-cooled panel according to any one of claims 1 to 7.
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| CN112864488B (en) * | 2021-01-12 | 2023-02-07 | 上海派能能源科技股份有限公司 | Energy storage liquid cooling system device and control method thereof |
| CN113140823B (en) * | 2021-03-09 | 2022-06-21 | 浙江零跑科技股份有限公司 | Integrated temperature control battery pack |
| CN114583331A (en) * | 2022-03-23 | 2022-06-03 | 江苏正力新能电池技术有限公司 | Cooling device and battery pack |
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| WO2013097146A1 (en) * | 2011-12-26 | 2013-07-04 | 联合汽车电子有限公司 | Flat plate water-cooled heat dispersion apparatus |
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| KR101179307B1 (en) * | 2010-08-13 | 2012-09-03 | 삼성전기주식회사 | Energy storage device module |
| KR101250841B1 (en) * | 2010-10-20 | 2013-04-04 | 주식회사 엘지화학 | Battery Pack Having Uniform Cooling Efficiency by Deviation of Slop Gradient Position |
| CN206332136U (en) * | 2016-11-30 | 2017-07-14 | 宝沃汽车（中国）有限公司 | A kind of battery liquid cooling plate and battery bag and vehicle |
| CN207368169U (en) * | 2017-10-25 | 2018-05-15 | 北京美联桥科技发展有限公司 | A kind of new-energy automobile power battery water-cooling plate |
| CN207765589U (en) * | 2017-12-29 | 2018-08-24 | 开沃新能源汽车集团有限公司 | A kind of electric automobile power battery gradual shrinkage dual channel liquid cooling plate |
| CN208127372U (en) * | 2018-03-06 | 2018-11-20 | 嘉兴泽通新能源科技有限公司 | A kind of flux controllable intelligent power battery water-cooled plate |
| CN208873848U (en) * | 2018-09-05 | 2019-05-17 | 合肥国轩高科动力能源有限公司 | Power battery temperature control system |
| CN209056573U (en) * | 2018-11-08 | 2019-07-02 | 重庆长安新能源汽车科技有限公司 | Power battery liquid-cooling heat radiation structure |
| CN211182454U (en) * | 2020-03-06 | 2020-08-04 | 江苏天钧精密技术有限公司 | Battery module liquid cooling system with high heat dissipation rate |
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| WO2013097146A1 (en) * | 2011-12-26 | 2013-07-04 | 联合汽车电子有限公司 | Flat plate water-cooled heat dispersion apparatus |
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