WO2025161622A1 - 热管理部件、电池及用电设备 - Google Patents

热管理部件、电池及用电设备

Info

Publication number
WO2025161622A1
WO2025161622A1 PCT/CN2024/133030 CN2024133030W WO2025161622A1 WO 2025161622 A1 WO2025161622 A1 WO 2025161622A1 CN 2024133030 W CN2024133030 W CN 2024133030W WO 2025161622 A1 WO2025161622 A1 WO 2025161622A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
group
flow
channels
thermal management
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/133030
Other languages
English (en)
French (fr)
Inventor
王磊
张凯文
周灵刚
林久标
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Publication of WO2025161622A1 publication Critical patent/WO2025161622A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/617Types of temperature control for achieving uniformity or desired distribution of temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids

Definitions

  • the present application relates to the field of battery technology, and in particular to a thermal management component, a battery, and an electrical device.
  • Batteries have high energy density, high reliability, long service life, and are environmentally friendly to the social environment. They have been widely used in passenger cars, commercial vehicles, electric bicycles, heavy trucks, energy storage facilities, battery swap stations, engineering manufacturing, smart devices, etc. At the same time, they also promote technological development and research in communication terminals, medical devices, energy development, etc.
  • the embodiments of the present application provide a thermal management component, a battery, and an electrical device, which can improve the current distribution of the thermal management component, thereby improving the reliability of the battery.
  • an embodiment of the present application provides a thermal management component, which has a liquid inlet channel, a first group of channels, a second group of channels, a first main channel and a second main channel; the first main channel and the second main channel are arranged side by side and spaced apart along a first direction; in the second direction, the first main channel has a first inflow end, the second main channel has a second inflow end, and the second direction intersects with the first direction; the first group of channels includes at least one first branch channel, and the first inflow end is connected to the liquid inlet channel through the first group of channels; the second group of channels includes at least one second branch channel, and the second inflow end is connected to the liquid inlet channel through the second group of channels; along the second direction, the projection of the first group of channels falls within the projection of the first inflow end, and the projection of the second group of channels falls within the projection of the second inflow end; wherein, along the liquid flow direction in the liquid inlet channel, the second group of channels is located downstream of the
  • the first group of flow channels connects the first main channel with the liquid inlet channel, and the first group of flow channels introduces liquid into the first main channel.
  • the second group of flow channels connects the second main channel with the liquid inlet channel, and the first group of flow channels introduces liquid into the second main channel.
  • the second group of flow channels is located downstream of the first group of flow channels, and the sum of the cross-sectional areas of the second group of flow channels is greater than the sum of the cross-sectional areas of the first group of flow channels.
  • the flow rate of the liquid entering the second main channel can be increased, and the difference between the flow rate of the liquid in the first main channel and the flow rate of the liquid in the second main channel can be reduced, so that the flow rate of the liquid distributed to the first main channel and the second main channel is more uniform, and the flow rate of the liquid in the first main channel and the second main channel is closer, thereby improving the uniformity of the flow of the thermal management component, improving the heat exchange effect of the thermal management component, improving the cycle performance of the battery cell, and improving the reliability of the battery.
  • the number of the first branch channel is one
  • the number of the second branch channel is one
  • the cross-sectional area of the second branch channel is greater than the cross-sectional area of the first branch channel
  • a first branch channel guides the liquid into the first main channel
  • a second branch channel guides the liquid into the second main channel.
  • the number of first branch channels and second branch channels is small, which can reduce the difficulty of preparing the thermal management component.
  • the width of the first branch channel is W 1
  • the width of the second branch channel is W 2 , satisfying 10 mm ⁇ W 1 ⁇ 20 mm, and 15 mm ⁇ W 2 ⁇ 25 mm.
  • the first branch channel when 10 mm ⁇ W 1 , the first branch channel is not too narrow, which can alleviate the pressure drop of the liquid in the first branch channel; when W 1 ⁇ 20 mm, the first branch channel is not too wide, so the liquid flow in the first branch channel 5 a is not too large, which is conducive to improving the flow uniformity of the thermal management component; therefore, when 10 mm ⁇ W 1 ⁇ 20 mm, both the pressure drop and the flow uniformity of the thermal management component can be taken into account.
  • the second branch channel When 15mm ⁇ W 2 , the second branch channel is not too narrow, which can alleviate the pressure drop of the liquid in the second branch channel and ensure a larger liquid flow rate.
  • W 2 ⁇ 25mm the second branch channel is not too large, which can obtain a smaller thermal management component. Therefore, when 15mm ⁇ W 2 ⁇ 25mm, both the pressure drop and the volume of the thermal management component can be taken into consideration.
  • first diversion channels there are multiple first diversion channels, and the multiple first diversion channels are spaced apart along the first direction. There is one second diversion channel, and the cross-sectional area of the second diversion channel is greater than the sum of the cross-sectional areas of all the first diversion channels.
  • the liquid is introduced into the first main channel through a plurality of first branch channels, and the liquid is introduced into the second main channel through a second branch channel, thereby improving the flow uniformity of the thermal management component.
  • the number of the first branch channel is one, the number of the second branch channels is multiple, the multiple second branch channels are spaced apart along the first direction, and the sum of the cross-sectional areas of all the second branch channels is greater than the cross-sectional area of the first branch channel.
  • the liquid is introduced into the first main channel through a first branch channel, and the liquid is introduced into the second main channel through multiple second branch channels, thereby improving the flow uniformity of the thermal management component.
  • first diversion channels there are multiple first diversion channels, and the multiple first diversion channels are spaced apart along the first direction; there are multiple second diversion channels, and the multiple second diversion channels are spaced apart along the first direction, and the sum of the cross-sectional areas of all the second diversion channels is greater than the sum of the cross-sectional areas of all the first diversion channels.
  • the liquid is introduced into the first main channel through multiple first branch channels, and the liquid is introduced into the second main channel through multiple second branch channels.
  • the number of first branch channels and second branch channels is multiple, which makes it convenient to arrange the first branch channels and second branch channels at different positions as needed, so as to improve the flow uniformity of the thermal management component and reduce the difficulty of preparing the thermal management component.
  • the thermal management component has a liquid inlet, and the liquid inlet is arranged at one end of the liquid inlet channel.
  • the thermal management component further has a first communicating flow channel.
  • the first communicating flow channel is disposed between the first inflow end and the second inflow end, and is communicated with the first inflow end and the second inflow end, respectively.
  • the first connecting flow channel is connected to the first inflow end and the second inflow end respectively.
  • the first connecting flow channel can introduce the liquid at the first inflow end of the first main flow channel into the second main flow channel. In this way, the flow resistance can be reduced, the pressure drop of the liquid can be alleviated, and the total flow rate of the liquid in the thermal management can be increased, thereby improving the heat exchange effect of the thermal management component.
  • the thermal management component also has a third group of flow channels, the third group of flow channels includes at least one third branch channel, and the first connecting flow channel is connected to the liquid inlet flow channel through the third group of flow channels; along the second direction, the projection of the third group of flow channels falls within the projection of the first connecting flow channel.
  • the first connecting flow channel is connected to the liquid inlet flow channel through the third group of flow channels, and the third branch flow channel can introduce the liquid into the first connecting flow channel, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, and increase the total flow rate of the liquid in thermal management, thereby improving the heat exchange effect of the thermal management component.
  • the sum of the cross-sectional areas of the third group of flow channels is greater than the sum of the cross-sectional areas of the first group of flow channels, and the sum of the cross-sectional areas of the third group of flow channels is smaller than the sum of the cross-sectional areas of the second group of flow channels.
  • the cross-sectional area of the first flow channel group, the cross-sectional area of the third flow channel group and the cross-sectional area of the second flow channel group increase successively.
  • the resistance encountered by the liquid along the flow direction of the liquid in the liquid inlet channel decreases successively, which is beneficial to increase the total flow rate of the liquid in the thermal management component, thereby improving the heat exchange effect of the thermal management component.
  • the liquid inlet channel along the liquid flow direction in the liquid inlet channel, includes a first upstream section located upstream of the first group of channels and a first downstream section located downstream of the first group of channels, the second group of channels is connected to the first downstream section, and the cross-sectional area of the first downstream section is greater than the sum of the cross-sectional areas of the first group of channels.
  • the cross-sectional area of the first downstream section is larger than the sum of the cross-sectional areas of the first group of flow channels.
  • the width of the first downstream section is W 3 , satisfying 15 mm ⁇ W 3 ⁇ 25 mm.
  • the first downstream segment extends along the first direction.
  • the first downstream section extends along the first direction, and the arrangement direction of the first main channel and the second main channel is the same as the extension direction of the first downstream section. In this way, the first downstream section, the first main channel and the second main channel can be arranged more compactly, thereby obtaining a thermal management component with a smaller thermal volume and improving the energy density of the battery using the thermal management component.
  • the first upstream section is inclined relative to the first downstream section.
  • the first upstream section is arranged obliquely relative to the first downstream section so that the first upstream section and the first downstream section are arranged at an angle.
  • the liquid inlet channel as a whole occupies a smaller size in the first direction and the second direction, and a smaller thermal management component can be obtained, thereby improving the energy density of the battery using the thermal management component.
  • the first main flow channel has a first wall and a second wall opposite to each other along the first direction, and a first spoiler is provided at the first inflow end; along the first direction, the first spoiler is spaced apart from the first wall, and the first spoiler is spaced apart from the second wall; along the second direction, the first spoiler is spaced apart from the first group of flow channels.
  • the first spoiler can divert the liquid at the first inlet end so that the liquid can first flow to the first wall and the second wall, thereby alleviating the problem of uneven liquid flow rate in the first main channel caused by the resistance of the first wall and the second wall to the liquid.
  • the second main flow channel has a third wall and a fourth wall opposite to each other along the first direction, and a second spoiler is provided at the second inflow end; along the first direction, the second spoiler is spaced apart from the third wall, and the second spoiler is spaced apart from the fourth wall; along the second direction, the second spoiler is spaced apart from the second group of flow channels.
  • the second spoiler can divert the liquid at the second inlet end so that the liquid can first flow to the third wall and the fourth wall, thereby alleviating the problem of uneven liquid flow rate in the second main channel caused by the resistance of the third wall and the fourth wall to the liquid.
  • the thermal management component further has a liquid outlet channel, a fourth group of channels, a fifth group of channels, a third main channel and a fourth main channel; the third main channel and the fourth main channel are arranged side by side and spaced apart along the first direction; in the second direction, the third main channel has a third outflow end, and the fourth main channel has a fourth outflow end; the fourth group of channels includes at least one fourth branch channel, and the third outflow end is connected to the liquid outlet channel through the fourth group of channels; the fifth group of channels includes at least one fifth branch channel, and the fourth outflow end is connected to the liquid outlet channel through the fifth group of channels; along the second direction, the projection of the fourth group of channels falls within the projection of the third outflow end, and the projection of the fifth group of channels falls within the projection of the fourth outflow end; wherein, along the liquid flow direction in the liquid outlet channel, the fourth group of channels is located upstream of the fifth group of channels, and the sum of the cross-sectional areas of the fourth group of channels is greater
  • the fourth group of flow channels connects the third flow channel with the liquid outlet flow channel, and the fourth group of flow channels guides the liquid out of the third main flow channel.
  • the fifth group of flow channels connects the fourth main flow channel with the liquid outlet flow channel, and the fifth group of flow channels guides the liquid out of the fourth main flow channel.
  • the fifth group of flow channels is located downstream of the fourth group of flow channels, and the sum of the cross-sectional areas of the fifth group of flow channels is greater than the sum of the cross-sectional areas of the fourth group of flow channels.
  • the flow rate of the liquid flowing out of the fourth main flow channel can be increased, the difference between the liquid flow rate in the third main flow channel and the liquid flow rate in the fourth main flow channel can be reduced, and the flow channels of the liquid distributed to the third and fourth main flow channels can be more uniform, thereby further improving the uniformity of the flow of the thermal management component, improving the heat exchange effect of the thermal management component, improving the cycle performance of the battery cell, and improving the reliability of the battery.
  • the first main channel, the second main channel, the third main channel, and the fourth main channel are sequentially arranged along the first direction.
  • the first main channel, the second main channel, the third main channel and the fourth main channel are arranged in sequence along the first direction, which can reduce the size of the channel in the second direction.
  • the layout of the channel is compact, and a smaller thermal management component can be obtained, thereby improving the energy density of the battery using the thermal management component.
  • the first main channel in the second direction, has a first outflow end opposite to the first inflow end, the second main channel has a second outflow end opposite to the second inflow end, the third main channel has a third inflow end opposite to the third outflow end, and the fourth main channel has a fourth inflow end opposite to the fourth outflow end;
  • the thermal management component also has a second connecting flow channel, and the second connecting flow channel connects the first outflow end, the second outflow end, the third inflow end and the fourth inflow end.
  • the first outflow end, the second outflow end, the third inflow end and the fourth inflow end are respectively connected to the second connecting flow channel, so that the second connecting flow channel can gather the liquid flowing out of the first main channel and the second main channel, and divert the liquid to the third main channel and the fourth main channel, thereby balancing the flow rate of the liquid in the first main channel, the second main channel, the third main channel and the fourth main channel, thereby further improving the flow uniformity of the thermal management component, improving the heat exchange effect of the thermal management component, improving the cycle performance of the battery cell, and improving the reliability of the battery.
  • the thermal management component has a liquid outlet, and the liquid outlet is arranged at one end of the liquid outlet channel.
  • the thermal management component further has a third communicating flow channel.
  • the third communicating flow channel is arranged between the third outflow end and the fourth outflow end, and is communicated with the third outflow end and the fourth outflow end respectively.
  • the third connecting flow channel is respectively connected to the third outflow end and the fourth outflow end.
  • the third connecting flow channel can also discharge the liquid in the third main flow channel. In this way, the flow resistance can be further reduced, the pressure drop of the liquid can be alleviated, and the flow rate of the liquid in thermal management can be increased, thereby improving the heat exchange effect of the thermal management component.
  • the thermal management component also has a sixth group of flow channels, the sixth group of flow channels includes at least one sixth branch channel, and the third connecting flow channel is connected to the liquid outlet flow channel through the sixth group of flow channels; along the second direction, the projection of the sixth group of flow channels falls within the projection of the third connecting flow channel.
  • the third connecting flow channel is connected to the liquid outlet flow channel through the sixth group of flow channels.
  • the sixth group of flow channels can discharge the liquid from the third connecting flow channel, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, and increase the flow rate of the liquid in thermal management, thereby improving the heat exchange effect of the thermal management component.
  • the sum of the cross-sectional areas of the sixth group of flow channels is greater than the sum of the cross-sectional areas of the fourth group of flow channels, and the sum of the cross-sectional areas of the sixth group of flow channels is smaller than the sum of the cross-sectional areas of the fifth group of flow channels.
  • the cross-sectional areas of the fourth flow channel group, the sixth flow channel group and the fifth flow channel group increase successively.
  • the resistance encountered by the liquid along the flow direction of the liquid in the liquid outlet channel decreases successively, which is beneficial to increasing the flow rate of the liquid in the thermal management component, and is beneficial to improving the flow uniformity of the thermal management component, thereby improving the heat exchange effect of the thermal management component.
  • the liquid outlet channel along the liquid flow direction in the liquid outlet channel, includes a second upstream section located upstream of the fifth group of channels and a second downstream section located downstream of the fifth group of channels, the fourth group of channels is connected to the second upstream section, and the cross-sectional area of the second upstream section is greater than the sum of the cross-sectional areas of the fourth group of channels.
  • the cross-sectional area of the second downstream section is larger than the sum of the cross-sectional areas of the fourth group of flow channels.
  • the liquid in the second upstream section is subjected to less pressure, and the second upstream section can alleviate the pressure drop, thereby obtaining a thermal management component with a smaller overall pressure drop, which is beneficial to improving the heat exchange effect of the thermal management component.
  • the third main flow channel has a fifth wall and a sixth wall opposite to each other along the first direction, and the third outflow end is provided with a third spoiler; along the first direction, the third spoiler is spaced apart from the fifth wall, and the third spoiler is spaced apart from the sixth wall; along the second direction, the third spoiler is spaced apart from the fourth group of flow channels.
  • the third spoiler can divert the liquid at the third outflow end so that the liquid can first flow to the fifth wall and the sixth wall and then flow out of the third main channel, thereby alleviating the problem of uneven liquid flow rate in the third main channel caused by the resistance of the fifth wall and the sixth wall to the liquid.
  • the fourth main flow channel has a seventh wall and an eighth wall opposite to each other along the first direction, and the fourth outflow end is provided with a fourth spoiler; along the first direction, the fourth spoiler is spaced apart from the seventh wall, and the fourth spoiler is spaced apart from the eighth wall; along the second direction, the fourth spoiler is spaced apart from the fifth group of flow channels.
  • the fourth spoiler can divert the liquid at the fourth outflow end so that the liquid can first flow to the seventh wall and the eighth wall and then flow out of the fourth main channel, thereby alleviating the problem of uneven liquid flow rate in the fourth main channel caused by the resistance of the seventh wall and the eighth wall to the liquid.
  • an embodiment of the present application provides a battery, comprising the thermal management component provided in any embodiment of the first aspect.
  • an embodiment of the present application provides an electric device, which includes the battery provided by any embodiment of the second aspect, and the battery is used to power the electric device.
  • FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application.
  • FIG2 is an exploded schematic diagram of a battery according to some embodiments of the present application.
  • FIG3 is a schematic structural diagram of a thermal management component according to some embodiments of the present application.
  • FIG4 is a schematic diagram of the internal structure of a thermal management component according to some embodiments of the present application.
  • FIG5 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG4 ;
  • FIG6 is a partial enlarged view of a thermal management component according to some embodiments of the present application.
  • FIG7 is a schematic diagram of the internal structure of a thermal management component according to some other embodiments of the present application.
  • FIG8 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG7 ;
  • FIG9 is a schematic diagram of the internal structure of a thermal management component according to some other embodiments of the present application.
  • FIG10 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG9 ;
  • FIG11 is a schematic diagram of the internal structure of a thermal management component according to some other embodiments of the present application.
  • FIG12 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG11 .
  • Icons 300-thermal management component; 310-liquid inlet; 320-liquid outlet; 330-liquid inlet channel; 330a-first upstream section; 330b-first downstream section; 340-liquid outlet channel; 340a-second upstream section; 340b-second downstream section; 1-first main channel; 1a-first wall; 1b-second wall; 1c first inflow end; 1d-first outflow end; 2-second main channel; 2a-third wall; 2b-fourth wall; 2c-second inflow end; 2d-second outflow end; 3-third main channel; 3a-fifth wall; 3b-sixth wall; 3d-third inflow end; 3c-third outflow end; 4-fourth main channel; 4a-seventh wall; 4b-eighth wall; 4d-fourth inflow end; 4c-fourth outflow end; 5-first group of channels; 5a-first branch channel; 6-second group of channels; 6a- Two branch channels; 7-first connecting channel; 8-second connecting channel; 9-
  • references to "embodiments” in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application.
  • the appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.
  • battery cells may include, but are not limited to, lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries.
  • Battery cells include, but are not limited to, cylindrical, flat, rectangular, or other shapes. Battery cells are generally packaged in cylindrical, prismatic, and soft-pack shapes.
  • a battery cell consists of an electrode assembly and an electrolyte.
  • the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator.
  • a battery cell primarily operates by the movement of metal ions between the positive and negative electrodes. Metal ions (such as lithium ions) are inserted and removed from the positive and negative electrodes.
  • the separator is placed between the positive and negative electrodes to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.
  • the positive electrode sheet includes a positive electrode collector and a positive electrode active material layer.
  • the positive electrode active material layer is coated on the surface of the positive electrode collector.
  • the positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer.
  • the positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab.
  • the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc.
  • the positive electrode current collector can be a metal foil or a composite current collector.
  • the metal foil aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. can be used.
  • the composite current collector may include a polymer material base layer and a metal layer.
  • the composite current collector can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).
  • a metal material aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.
  • a polymer material substrate such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.
  • the negative electrode sheet includes a negative electrode collector and a negative electrode active material layer.
  • the negative electrode active material layer is coated on the surface of the negative electrode collector.
  • the negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer.
  • the negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab.
  • the negative electrode current collector can be a metal foil or a composite current collector.
  • the metal foil can be silver-plated aluminum, silver-plated stainless steel, stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium.
  • the negative electrode active material can be carbon or silicon, for example.
  • the separator can be made of materials such as PP (polypropylene) or PE (polyethylene). Furthermore, the electrode assembly can be either a wound or laminated structure.
  • the battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.
  • the battery referred to in this application may include a battery module or a battery pack.
  • a battery generally includes a casing for enclosing one or more battery cells. The casing can reduce the effects of liquids or other foreign matter on the charging or discharging of the battery cells.
  • the battery may be a battery module.
  • the multiple battery cells are arranged and fixed to form a battery module.
  • the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are housed in the case.
  • multiple battery cells can be first integrated into at least one battery module, which is then installed in a housing to form a battery pack.
  • auxiliary structural members such as crossbeams can be installed between the battery modules to improve the stability of the battery module installation in the housing.
  • the box body can be used as a part of the chassis structure of the vehicle.
  • part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.
  • the cycle performance of a battery cell is related to its temperature. If the heat generated by the battery cell during use causes the battery cell temperature to be too high, or if the ambient temperature causes the battery cell temperature to be too high or too low, the cycle performance of the battery cell will decrease. Therefore, a thermal management component is usually set inside the battery to regulate the temperature of multiple battery cells so that the battery cells are within an appropriate temperature range.
  • the interior of the thermal management component is usually formed with multiple main channels for liquid flow.
  • the liquid flow in the main channel closer to the liquid inlet is larger and faster, while the liquid flow in the main channel farther away from the liquid inlet is smaller and the flow rate is smaller.
  • the flow rate of the liquid in each main channel is uneven, the thermal management component has poor flow uniformity, the heat exchange effect at different positions of the thermal management component is inconsistent, and the thermal management component has poor ability to regulate the temperature of the battery cell, resulting in a shorter cycle life of the battery cell and affecting the reliability of the battery.
  • the present application provides a technical solution, in which a first group of flow channels is set between the liquid inlet channel and the first main channel, and a second group of flow channels is set between the second main channel and the liquid inlet channel.
  • the second group of flow channels is downstream of the first group of flow channels, and the sum of the cross-sectional areas of the second flow channel groups is greater than the sum of the cross-sectional areas of the first flow channel groups, thereby increasing the flow rate of the liquid entering the second main channel, reducing the difference between the flow rate of the liquid in the first main channel and the flow rate of the liquid in the second main channel, and making the flow rate of the liquid distributed to the first main channel and the second main channel more uniform, thereby improving the flow uniformity of the thermal management component, improving the heat exchange effect of the thermal management component, improving the cycle performance of the battery cell, and improving the reliability of the battery.
  • the thermal management component is a component used to accommodate a heat exchange medium to adjust the temperature of multiple battery cells. Adjusting the temperature means heating or cooling multiple battery cells.
  • the heat exchange medium is a liquid contained in the flow channel of the thermal management component.
  • the thermal management component is used to accommodate a cooling medium to lower the temperature of multiple battery cells.
  • the thermal management component can also be called a cooling component, a cooling system or a cooling plate, etc., and the liquid it contains can also be called a cooling medium or a cooling liquid, more specifically, it can be called a coolant or a cooling gas.
  • the thermal management component can also be used for heating to increase the temperature of multiple battery cells.
  • the liquid can be water, a mixture of water and ethylene glycol, etc.
  • the liquid mentioned below refers to the heat exchange medium.
  • Electrically powered equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools.
  • Vehicles can be fuel-powered, gas-powered, or new energy vehicles.
  • New energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles.
  • Spacecraft include aircraft, rockets, space shuttles, and spacecraft.
  • Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys.
  • Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.
  • FIG1 is a schematic diagram of the structure of a vehicle 1000 according to some embodiments of the present application.
  • a battery 100 is disposed inside the vehicle 1000 .
  • the battery 100 can be disposed at the bottom, head, or tail of the vehicle 1000 .
  • the battery 100 can be used to power the vehicle 1000 .
  • the battery 100 can serve as an operating power source for the vehicle 1000 .
  • the vehicle 1000 may further include a controller 400 and a motor 200 .
  • the controller 400 is used to control the battery 100 to supply power to the motor 200 , for example, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.
  • the battery 100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
  • FIG. 2 is an exploded schematic diagram of a battery 100 according to some embodiments of the present application.
  • the battery 100 includes multiple battery cells 10 and a thermal management component 300 .
  • the multiple battery cells 10 can be connected in series, in parallel, or in a hybrid configuration.
  • Hybrid configuration refers to multiple battery cells 10 being connected in both series and parallel configurations.
  • the battery 100 may further include a busbar component (not shown), and the multiple battery cells 10 may be electrically connected via the busbar component to achieve series connection, parallel connection, or mixed connection of the multiple battery cells 10 .
  • the busbar component may be a metal conductor, such as copper, iron, aluminum, steel, aluminum alloy, etc.
  • the battery 100 may further include a housing 20 for accommodating the battery cells 10.
  • the housing 20 may include a first portion 21 and a second portion 22, which overlap to define a receiving space 23 for accommodating the battery cells 10.
  • the connection between the first portion 21 and the second portion 22 may be sealed by a sealing element (not shown), such as a sealing ring or sealant.
  • the first portion 21 and the second portion 22 can have various shapes, such as a cuboid, a cylinder, etc.
  • the first portion 21 can be a hollow structure with one side open, and the second portion 22 can also be a hollow structure with one side open.
  • the open side of the second portion 22 covers the open side of the first portion 21, thereby forming the box 20 with the accommodating space 23.
  • the first portion 21 can also be a hollow structure with one side open
  • the second portion 22 can be a plate-like structure.
  • the second portion 22 covers the open side of the first portion 21, thereby forming the box 20 with the accommodating space 23.
  • the battery 100 further includes a thermal management component 300 , wherein the thermal management component 300 is provided with a flow channel inside, and the flow channel is used for liquid to regulate the temperature of the battery cell 10 .
  • the thermal management component 300 can be used to regulate the temperature of the battery cell 10 at the bottom of the battery cell 10 .
  • the thermal management component 300 is provided at the bottom of the battery cell 10 , and the upper surface of the thermal management component 300 is a heat exchange surface, and the thermal management component 300 exchanges heat with the battery cell 10 through the upper surface.
  • the thermal management component 300 can also be used between two adjacent battery cells 10 , in which case the two opposite surfaces of the thermal management component 300 in the thickness direction are both heat exchange surfaces, and the thermal management component 300 can exchange heat with the battery cell 10 through the two heat exchange surfaces.
  • the embodiment of the present application provides a thermal management component 300, which can solve the problem that poor current distribution of the thermal management component 300 affects the reliability of the battery 100.
  • the specific structure of the thermal management component 300 is described in detail below with reference to the accompanying drawings.
  • Figure 3 is a schematic diagram of the structure of the thermal management component 300 of some embodiments of the present application
  • Figure 4 is a schematic diagram of the internal structure of the thermal management component 300 of some embodiments of the present application
  • Figure 5 is a schematic diagram of the liquid flow direction in the thermal management component 300 shown in Figure 4
  • Figure 6 is a partial enlarged view of the thermal management component 300 of some embodiments of the present application.
  • the present embodiment provides a thermal management component 300.
  • the thermal management component 300 includes a liquid inlet channel 330, a first group of flow channels 5, a second group of flow channels 6, a first main flow channel 1, and a second main flow channel 2.
  • the first main flow channel 1 and the second main flow channel 2 are arranged side by side and spaced apart along a first direction Y.
  • a second direction X the first main flow channel 1 has a first inlet end
  • the second main flow channel 2 has a second inlet end 2c.
  • the second direction X intersects the first direction Y.
  • the first flow channel 5 includes at least one first branch channel 5a, and the first inlet end communicates with the liquid inlet channel 330 through the first flow channel 5.
  • the second flow channel 6 includes at least one second branch channel 6a, and the second inlet end 2c communicates with the liquid inlet channel 330 through the second flow channel 6.
  • the projection of the first group of flow channels 5 falls within the projection of the first inlet end
  • the projection of the second group of flow channels 6 falls within the projection of the second inlet end 2c.
  • the second group of flow channels 6 is located downstream of the first group of flow channels 5, and the sum of the cross-sectional areas of the second group of flow channels 6 is greater than the sum of the cross-sectional areas of the first group of flow channels 5.
  • the shape of the heat management component 300 can be varied, and the heat management component 300 can be configured as a circle, a rectangle, an ellipse, a special shape, etc.
  • the heat management component 300 is configured as a rectangle.
  • the liquid inlet channel 330, the first group of channels 5, the second group of channels 6, the first main channel 1, and the second main channel 2 are all channels for containing liquid in the thermal management component 300.
  • the liquid inlet channel 330 is used to transport liquid to the first main channel 1 and the second main channel 2.
  • the liquid in the liquid inlet channel 330 entering the first main channel 1 and the second main channel 2 is also called diversion.
  • the thermal management component 300 there can be multiple main channels connected to the liquid inlet channel 330. That is, according to specific needs, in addition to the first main channel 1 and the second main channel 2, the thermal management component 300 can also have a third, fourth, and Nth main channels connected to the liquid inlet channel 330. For example, as shown in Figures 4 and 5, the thermal management component 300 has two main channels connected to the liquid inlet channel 330, namely the first main channel 1 and the second main channel 2, with the first main channel 1 located upstream of the second main channel 2.
  • the first main channel 1 and the second main channel 2 are arranged side by side along the first direction Y, and the first main channel 1 and the second main channel 2 are connected in parallel.
  • the shapes of the first main channel 1 and the second main channel 2 can be various, and the shapes of the first main channel 1 and the second main channel 2 can be the same or different.
  • the first main channel 1 and the second main channel 2 can extend in a curve, or the first main channel 1 and the second main channel 2 can extend in a straight line.
  • the first main channel 1 and the second main channel 2 both extend in a straight line.
  • the first main channel 1 has a first inflow end and a first outflow end 1d opposite to each other. Liquid enters the first main channel 1 from the first inflow end and flows out of the first main channel 1 from the first outflow end 1d.
  • the second main channel 2 has a second inflow end 2c and a second outflow end 2d opposite to each other. Liquid enters the first main channel 1 from the second inflow end 2c and flows out of the first main channel 1 from the second outflow end 2d.
  • the first inlet end is connected to the liquid inlet channel 330 via the first set of flow channels 5, meaning that the first set of flow channels 5 connects the first inlet end to the liquid inlet channel 330. It is understood that the first set of flow channels 5 is located between the first inlet end and the liquid inlet channel 330, and the liquid in the liquid inlet channel 330 passes through the first set of flow channels 5 before entering the first main channel 1. It is understood that the cross-sectional area of the first set of flow channels 5 affects the liquid flow rate in the first main channel 1, and the liquid flow rate in the first main channel 1 is related to the size of the first set of flow channels 5.
  • the second inlet end 2c is connected to the liquid inlet channel 330 via the second set of flow channels 6.
  • the first group of runners 5 includes at least one first branch runner 5a. It is understood that there can be one or more first branch runners 5a. If there is one first branch runner 5a, the cross-sectional area of the first branch runner 5a is the sum of the cross-sectional areas of the first group of runners 5. If there is one first branch runner 5a, the sum of the cross-sectional areas of the multiple first branch runners 5a is the sum of the cross-sectional areas of the first group of runners 5.
  • the second group of runners 6 includes at least one second branch runner 6a. It is understood that there may be one or more second branch runners 6a. If there is one second branch runner 6a, the cross-sectional area of the second branch runner 6a is the sum of the cross-sectional areas of the second group of runners 6. If there are multiple second branch runners 6a, the sum of the cross-sectional areas of the multiple second branch runners 6a is the sum of the cross-sectional areas of the second group of runners 6.
  • the length of the cross-section multiplied by the width is the cross-sectional area of the first branch channel 5a or the second branch channel 6a; if the cross-section of the first branch channel 5a or the second branch channel 6a is circular, measure the radius r corresponding to the circle, and the cross-sectional area of the first branch channel 5a or the second branch channel 6a can be obtained according to the calculation formula ⁇ r2 for the area of the circle; if the cross-section of the first branch channel 5a or the second branch channel 6a is irregular, the cutting and patching method or an area measuring instrument can be used to obtain the cross-sectional area of the first branch channel 5a or the second branch channel 6a.
  • the thermal management component 300 can be integrally formed or manufactured in separate parts. Specifically, the thermal management component 300 includes a first plate and a second plate stacked together, with a groove punched into the first plate on a side facing the second plate. The first plate covers the groove to form a flow channel for accommodating liquid.
  • the liquid flow in the first main flow channel 1 is typically greater than that in the second main flow channel, resulting in uneven flow in the thermal management component 300.
  • the cross-sectional area of the second group of flow channels 6 needs to be larger than the cross-sectional area of the first group of flow channels 5. A larger cross-sectional area of a flow channel indicates a greater liquid flow, and thus a higher liquid flow rate.
  • the first group of flow channels 5 connects the first main channel 1 with the liquid inlet channel 330, and the first group of flow channels 5 introduces liquid into the first main channel 1.
  • the second group of flow channels 6 connects the second main channel 2 with the liquid inlet channel 330, and the first group of flow channels 5 introduces liquid into the second main channel 2.
  • the second group of flow channels 6 is located downstream of the first group of flow channels 5, and the sum of the cross-sectional areas of the second group of flow channels 6 is greater than the sum of the cross-sectional areas of the first group of flow channels 5.
  • the flow rate of the liquid in the second main channel 2 is increased, the flow rate of the liquid entering the second main channel 2 is increased, and the difference between the flow rate of the liquid in the first main channel 1 and the flow rate of the liquid in the second main channel 2 is reduced, making the flow rate of the liquid distributed to the first main channel 1 and the second main channel 2 more uniform, thereby improving the uniformity of the flow of the thermal management component 300, improving the heat exchange effect of the thermal management component 300, improving the cycle performance of the battery cell 10, and improving the reliability of the battery 100.
  • the first direction Y may be perpendicular to the second direction X.
  • the number of the first branch channel 5 a is one
  • the number of the second branch channel 6 a is one
  • the cross-sectional area of the second branch channel 6 a is greater than that of the first branch channel 5 a.
  • the cross-sectional area of the first branch channel 5 a is the sum of the cross-sectional areas of the first group of channels 5
  • the cross-sectional area of the second branch channel 6 a is the sum of the cross-sectional areas of the second group of channels 6 .
  • the width of the second branch channel 6a can be controlled to be greater than the width of the first branch channel 5a, so that the sum of the cross-sectional areas of the second group of flow channels 6 is greater than the sum of the cross-sectional areas of the first group of flow channels 5.
  • the depth of the first flow channel is the depth of the first flow channel in the thickness direction of the thermal management component 300, and the thickness direction of the thermal management component 300 is the direction perpendicular to the plane formed by the first direction Y and the second direction X.
  • the depth of the second branch channel 6a can be controlled to be greater than the depth of the first branch channel 5a, so that the sum of the cross-sectional areas of the second group of channels 6 is greater than the sum of the cross-sectional areas of the first group of channels 5.
  • a first branch channel 5a introduces liquid into the first main channel 1
  • a second branch channel 6a introduces liquid into the second main channel 2.
  • the cross-sectional area of the second branch channel 6a is greater than the cross-sectional area of the first branch channel 5a, so that the sum of the cross-sectional areas of the second group of channels 6 is greater than the sum of the cross-sectional areas of the first branch channels 5a.
  • the small number of second branch channels 6a can reduce the difficulty of preparing the thermal management component 300.
  • the width of the first branch channel 5a is W 1
  • the width of the second branch channel 6a is W 2 , satisfying 10 mm ⁇ W 1 ⁇ 20 mm.
  • the first branch channel 5a When W 1 is 10 mm ⁇ W 1 , the first branch channel 5a is not too narrow, which can alleviate the pressure drop of the liquid in the first branch channel 5a .
  • W 1 When W 1 is 20 mm ⁇ W 1 , the first branch channel 5a is not too wide, so the liquid flow in the first branch channel 5a is not too large, which is conducive to improving the flow uniformity of the thermal management component 300 . Therefore, when W 1 is 10 mm ⁇ W 1 ⁇ 20 mm, both the pressure drop and the flow uniformity of the thermal management component 300 can be taken into account.
  • W1 may be 10 mm, 12 mm, 14 mm, 16 mm, 17 mm, 19 mm, 20 mm, and any value therebetween.
  • the second branch channel 6a When W 2 is 15 mm ⁇ W 2 , the second branch channel 6a is not too narrow, which can alleviate the pressure drop of the liquid in the second branch channel 6a and ensure a larger liquid flow rate. When W 2 is 25 mm ⁇ W 2 , the second branch channel 6a is not too large, which can obtain a smaller thermal management component 300. Therefore, when W 2 is 15 mm ⁇ W 2 ⁇ 25 mm, both the pressure drop and the volume of the thermal management component 300 can be taken into consideration.
  • W2 can be 15 mm, 17 mm, 19 mm, 22 mm, 23 mm, 24 mm, 25 mm, and any value therebetween.
  • Figure 7 is a schematic diagram of the internal structure of a thermal management component 300 according to another embodiment of the present application
  • Figure 8 is a schematic diagram of the direction of liquid flow in the thermal management component 300 shown in Figure 7.
  • there are multiple first branch channels 5a and the multiple first branch channels 5a are spaced apart along the first direction Y.
  • first runners 5a and multiple second runners 6a there are multiple first runners 5a and multiple second runners 6a.
  • the number of first runners 5a can be two, three, four, etc.
  • the number of second runners 6a can be two, three, four, etc. It should be noted that the number of first runners 5a and the number of second runners 6a can be the same or different. For example, in Figures 7 and 8, the number of first runners 5a and the number of second runners 6a are both two.
  • the sum of the cross-sectional areas of the first group of flow channels can be obtained by adding up the areas of the plurality of first flow channels 5a.
  • the sum of the cross-sectional areas of the second group of flow channels can be obtained by adding up the areas of the plurality of second flow channels 6a.
  • the liquid is introduced into the first main channel 1 through multiple first branch channels 5a, and the liquid is introduced into the second main channel 2 through multiple second branch channels 6a.
  • the number of first branch channels 5a and second branch channels 6a is multiple, which makes it convenient to arrange the first branch channels 5a and second branch channels 6a at different positions as needed, so as to improve the flow uniformity of the thermal management component 300 and reduce the difficulty of preparing the thermal management component 300.
  • first branch channels 5a there are multiple first branch channels 5a, and the multiple first branch channels 5a are arranged at intervals along the first direction Y.
  • second branch channel 6a There is one second branch channel 6a, and the cross-sectional area of the second branch channel 6a is greater than the sum of the cross-sectional areas of all the first branch channels 5a.
  • the widths of the plurality of first branch channels 5 a may be the same or different, and the widths of the plurality of second branch channels 6 a may be the same or different.
  • the liquid is introduced into the first main channel 1 through a plurality of first branch channels 5 a , and the liquid is introduced into the second main channel 2 through a second branch channel 6 a , thereby improving the flow uniformity of the thermal management component 300 .
  • first branch channel 5a there is one first branch channel 5a, and there are multiple second branch channels 6a.
  • the multiple second branch channels 6a are arranged at intervals along the first direction Y, and the sum of the cross-sectional areas of all the second branch channels 6a is greater than the cross-sectional area of the first branch channel 5a.
  • the liquid is introduced into the first main channel 1 through a first branch channel 5 a , and the liquid is introduced into the second main channel 2 through a plurality of second branch channels 6 a , thereby improving the flow uniformity of the thermal management component 300 .
  • the above embodiments illustrate some specific implementations of making the sum of the cross-sectional areas of the second group of flow channels 6 greater than the sum of the cross-sectional areas of the first group of flow channels 5 .
  • the thermal management component 300 further includes a liquid inlet 310 , which is disposed at one end of the liquid inlet channel 330 .
  • the first group of flow channels 5 is closer to the liquid inlet 310 than the second group of flow channels 6 .
  • the liquid inlet 310 is disposed above the liquid inlet channel 330 , and the first main channel 1 is disposed above the second main channel 2 .
  • Figure 9 is a schematic diagram of the internal structure of a thermal management component 300 according to yet other embodiments of the present application; and Figure 10 is a schematic diagram of the direction of liquid flow within the thermal management component 300 shown in Figure 9.
  • the thermal management component 300 further comprises a first communication channel 7, which is disposed along a first direction Y between the first inflow end and the second inflow end 2c and communicates with the first inflow end and the second inflow end 2c, respectively.
  • the first communication flow channel 7 is located between the first main flow channel 1 and the second main flow channel 2 , and the first communication flow channel 7 extends along the first direction Y.
  • the first connecting flow channel 7 is connected to the first inlet end and the second inlet end 2c respectively.
  • liquid can also enter the second main flow channel 2 through the first connecting flow channel 7. This can reduce flow resistance, alleviate the pressure drop of the liquid, increase the flow rate of the liquid during thermal management, and thus improve the heat exchange effect of the thermal management component 300.
  • FIG11 is a schematic diagram of the internal structure of a thermal management component 300 according to some further embodiments of the present application;
  • FIG12 is a schematic diagram of the liquid flow direction in the thermal management component 300 shown in FIG11 .
  • the thermal management component 300 further includes a third group of flow channels 350 , the third group of flow channels 350 including at least one third branch flow channel 350 a, and the first connecting flow channel 7 is connected to the liquid inlet flow channel 330 through the third group of flow channels 350 ; along the second direction X, the projection of the third group of flow channels 350 falls within the projection of the first connecting flow channel 7 .
  • the third group of flow channels 350 connects the first connecting flow channel 7 with the liquid inlet flow channel 330, and the third group of flow channels 350 can introduce liquid into the first connecting flow channel 7. That is, not only can the first group of flow channels 5 and the second group of flow channels 6 be used to divert liquid into the liquid inlet flow channel 330, but the third group of flow channels 350 can also divert liquid into the liquid inlet flow channel 330.
  • the number of the third branch channels 350a can be one or more.
  • the number of the third branch channel 350 a is one, and the third branch channel 350 a extends along the second direction X.
  • the liquid in the first connecting channel 7 can partially enter the first main channel 1 and partially enter the second main channel 2 .
  • the first connecting flow channel 7 is connected to the liquid inlet flow channel 330 through the third group of flow channels 350.
  • the third branch flow channel 350a can introduce liquid into the first connecting flow channel 7, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, and increase the total flow rate of the liquid in thermal management, thereby improving the heat exchange effect of the thermal management component 300.
  • the first group of flow channels 5 , the second group of flow channels 6 and the third group of flow channels 350 are parallel to each other and extend along the second direction X.
  • the sum of the cross-sectional areas of the third group of flow channels 350 is greater than the sum of the cross-sectional areas of the first group of flow channels 5 , and the sum of the cross-sectional areas of the third group of flow channels 350 is less than the sum of the cross-sectional areas of the second group of flow channels 6 .
  • the cross-sectional area of the third branch runner 350a is the sum of the cross-sectional areas of the third group of runners 350. If there are multiple third branch runners 350a, the sum of the cross-sectional areas of the multiple third branch runners 350a is the sum of the cross-sectional areas of the third group of runners 350. For example, in Figures 11 and 12, there is one third branch runner 350a.
  • the cross-sectional area of the third branch channel 350a can be measured using the same measurement method as the first branch channel 5a and the second branch channel 6a, which will not be repeated here for the sake of brevity.
  • the cross-sectional areas of the first flow channel group, the third flow channel group, and the second flow channel group increase in sequence.
  • the resistance to the liquid decreases in sequence, which helps increase the total flow rate of the liquid in the thermal management component 300, thereby improving the heat exchange effect of the thermal management component 300.
  • the liquid inlet channel 330 includes a first upstream section 330a located upstream of the first group of channels 5 and a first downstream section 330b located downstream of the first group of channels 5, the second group of channels 6 is connected to the first downstream section 330b, and the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first group of channels 5.
  • the first upstream section 330a and the first downstream section 330b may be arranged along the first direction Y to form a straight liquid inlet channel 330.
  • the first upstream section 330a and the first downstream section 330b may also be arranged at an angle (as shown in FIG11 and FIG12 ).
  • the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first group of flow channels 5. In this way, the pressure drop of the liquid in the first downstream section 330b can be alleviated. Moreover, compared with the first group of flow channels 5, the liquid is more likely to enter the first downstream section 330b, thereby flowing into the second main flow channel 2 through the second group of flow channels 6, further improving the flow uniformity of the thermal management component 300.
  • the width of the first downstream section 330 b is W 3 , satisfying 15 mm ⁇ W 3 ⁇ 25 mm.
  • the first downstream section 330 b When W 3 is 15 mm ⁇ W 3 , the first downstream section 330 b is not too narrow, which can alleviate the pressure drop of the liquid in the first downstream section 330 b . When W 3 is 25 mm ⁇ W 3 , the first downstream section 330 b is not too wide, which can reduce the width of the first downstream section 330 b , thereby obtaining a smaller thermal management component 300 . Therefore, when W 3 is 15 mm ⁇ W 3 ⁇ 25 mm, both the pressure drop and the volume of the thermal management component 300 are balanced.
  • W3 can be 15 mm, 16 mm, 17 mm, 19 mm, 20 mm, 22 mm, 24 mm, 25 mm, and any value therebetween.
  • the liquid inlet 310 is disposed at an end of the first upstream section 330 a away from the first downstream section 330 b .
  • the cross-sectional area of the first upstream section 330a is greater than the cross-sectional area of the first downstream section 330b, and the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first group of flow channels 5.
  • the larger cross-sectional area of the first upstream section 330a can alleviate the pressure drop of the liquid near the liquid inlet 310, thereby increasing the total flow rate of the liquid in the thermal management component 300 and improving the heat exchange effect of the thermal management component 300.
  • the first downstream segment 330b extends along the first direction Y.
  • the first downstream section 330b may extend in a straight line, or in a curved line.
  • the first downstream section 330b extends along the first direction Y, and the arrangement direction of the first main channel 1 and the second main channel 2 is the same as the extension direction of the first downstream section 330b. In this way, the first downstream section 330b, the first main channel 1 and the second main channel 2 can be arranged more compactly, thereby reducing the volume of the thermal management component 300 and improving the energy density of the battery 100 using the thermal management component 300.
  • the first upstream section 330a is tilted relative to the first downstream section 330b.
  • first upstream section 330a and the first downstream section 330b are arranged at an angle.
  • first upstream section 330a and the first downstream section 330b are arranged at an obtuse angle.
  • the first upstream section 330a is tilted relative to the first downstream section 330b so that the first upstream section 330a and the first downstream section 330b are arranged at an angle.
  • the liquid inlet channel 330 as a whole occupies a smaller size in the first direction Y and the second direction X, thereby obtaining a smaller thermal management component 300 and improving the energy density of the battery 100 using the thermal management component 300.
  • the first main flow channel 1 has a first wall 1a and a second wall 1b that are opposite each other along a first direction Y, and a first spoiler 410 is provided at the first inflow end.
  • first direction Y the first spoiler 410 is spaced apart from the first wall 1a
  • the first spoiler 410 is spaced apart from the second wall 1b
  • the second direction X the first spoiler 410 is spaced apart from the first group of flow channels 5.
  • the thermal management component 300 When the thermal management component 300 is prepared separately from a first plate body and a second plate body, and the second plate body covers the groove punched by the first plate body to form a flow channel, the first wall 1a and the second wall 1b are the two groove walls of the groove in the corresponding area of the first main flow channel 1, and a gap is set between the first spoiler 410 and the two groove walls of the groove.
  • the first wall 1a and the second wall 1b are hereinafter referred to as the edges of the first main channel 1.
  • the area between the first wall 1a and the second wall 1b is the center of the first main channel 1.
  • the first wall 1a and the second wall 1b create resistance to the liquid flow. This results in a low flow velocity at the edges of the first main channel 1, resulting in a low flow rate.
  • the first spoiler 410 can divert the liquid at the first inlet end so that the liquid can first flow to the first wall 1a and the second wall 1b, thereby alleviating the problem of uneven liquid flow rate in the first main channel 1 caused by the resistance of the first wall 1a and the second wall 1b to the liquid.
  • the first spoiler 410 improves the problem of uneven flow velocity in the first main channel 1.
  • the second main channel 2 also has the problem of uneven flow velocity.
  • the second main channel 2 has a third wall 2a and a fourth wall 2b that are opposite to each other along a first direction Y, and the second inflow end 2c is provided with a second spoiler 420.
  • the first direction Y the second spoiler 420 is spaced apart from the third wall 2a
  • the second spoiler 420 is spaced apart from the fourth wall 2b.
  • the second spoiler 420 is spaced apart from the second group of flow channels 6.
  • the second spoiler 420 has the same function as the first spoiler 410 , and for the sake of brevity, details thereof will not be repeated here.
  • the second spoiler 420 can divert the liquid at the second inlet end 2c so that the liquid can first flow to the third wall 2a and the fourth wall 2b, thereby alleviating the problem of uneven liquid flow rate in the second main channel 2 caused by the resistance of the third wall 2a and the fourth wall 2b to the liquid.
  • the thermal management component 300 further has a liquid outlet channel 340, a fourth group of channels 360, a fifth group of channels 370, a third main channel 3 and a fourth main channel 4.
  • the third main channel 3 and the fourth main channel 4 are arranged side by side and spaced apart along the first direction Y.
  • the third main channel 3 has a third outflow end 3 c
  • the fourth main channel 4 has a fourth outflow end 4 c .
  • the fourth group of flow channels 360 includes at least one fourth branch flow channel 360a, and the third outflow end 3c is connected to the liquid outlet flow channel 340 via the fourth group of flow channels 360.
  • the fifth group of flow channels 370 includes at least one fifth branch flow channel 370a, and the fourth outflow end 4c is connected to the liquid outlet flow channel 340 via the fifth group of flow channels 370.
  • the projection of the fourth group of flow channels 360 falls within the projection of the third outflow end 3c
  • the projection of the fifth group of flow channels 370 falls within the projection of the fourth outflow end 4c.
  • the fourth group of flow channels 360 is located upstream of the fifth group of flow channels 370, and the sum of the cross-sectional areas of the fourth group of flow channels 360 is greater than the sum of the cross-sectional areas of the fifth group of flow channels 370.
  • the third main channel 3 has a third inflow end 3d and a third outflow end 3c opposite each other. Liquid enters the third main channel 3 from the third inflow end 3d and flows out of the third main channel 3 from the third outflow end 3c.
  • the fourth main channel 4 has a fourth inflow end 4d and a fourth outflow end 4c opposite each other. Liquid enters the fourth main channel 4 from the fourth inflow end 4d and flows out of the fourth main channel 4 from the fourth outflow end 4c.
  • the third outflow end 3c is connected to the liquid outlet channel 340 via the fourth set of flow channels 360. It is understood that the fourth set of flow channels 360 is located between the third outflow end 3c and the liquid outlet channel 340. The fourth set of flow channels 360 connects the third outflow end 3c with the liquid outlet channel 340. The liquid in the third main channel 3 passes through the fourth set of flow channels 360 and then enters the liquid outlet channel 340. It is understood that the cross-sectional area of the fourth set of flow channels 360 affects the flow rate of the liquid in the third main channel 3. The flow rate of the liquid in the third main channel 3 is related to the size of the fourth set of flow channels 360.
  • the fourth outflow end 4c is connected to the liquid outlet channel 340 via the fifth set of flow channels 370. It is understood that the fifth set of flow channels 370 is located between the fourth outflow end 4c and the liquid outlet channel 340. The fifth set of flow channels 370 connects the fourth outflow end 4c with the liquid outlet channel 340. The liquid in the fourth main channel 4 passes through the fifth set of flow channels 370 and then enters the liquid outlet channel 340. It is understood that the cross-sectional area of the fifth set of flow channels 370 affects the flow rate of the liquid in the fourth main channel 4. The flow rate of the liquid in the fourth main channel 4 is related to the size of the fifth set of flow channels 370.
  • the fourth group of flow channels 360 includes at least one fourth branch flow channel 360a. It is understood that there may be one or more fourth branch flow channels 360a. If there is only one fourth branch flow channel 360a (as shown in Figures 4 and 5), the cross-sectional area of the fourth branch flow channel 360a is the sum of the cross-sectional areas of the fourth group of flow channels 360. If there are multiple fourth branch flow channels 360a (as shown in Figures 7 and 8), the sum of the cross-sectional areas of the multiple fourth branch flow channels 360a is the sum of the cross-sectional areas of the first group of flow channels 5.
  • the fifth group of flow channels 370 includes at least one fifth branch flow channel 370a. It is understood that there may be one or more fifth branch flow channels 370a. If there is only one fifth branch flow channel 370a (as shown in Figures 4 and 5), the cross-sectional area of the fifth branch flow channel 370a is the sum of the cross-sectional areas of the fifth group of flow channels 370. If there are multiple fifth branch flow channels 370a (as shown in Figures 7 and 8), the sum of the cross-sectional areas of the multiple fifth branch flow channels 370a is the sum of the cross-sectional areas of the fifth group of flow channels 370.
  • the sum of the cross-sectional areas of the fourth group of flow channels 360 is greater than the sum of the cross-sectional areas of the fifth group of flow channels 370 , that is, the sum of the cross-sectional areas of all fourth branch flow channels 360 a is greater than the sum of the cross-sectional areas of all fifth branch flow channels 370 a .
  • the relative positions of the third main channel 3, the fourth main channel 4 and the first main channel 1, the second main channel 2 are different, and the relative positions of the liquid outlet channel 340 and the liquid inlet channel 330 will also be different. Therefore, the liquid flow direction S2 in the liquid outlet channel can be the same as the liquid flow direction S1 in the liquid inlet channel, or the liquid flow direction S2 in the liquid outlet channel can be different from the liquid flow direction S1 in the liquid inlet channel.
  • the liquid outlet channel 340 and the liquid inlet channel 330 are arranged on the same side of the second direction X of the thermal management component 300, and the liquid flow direction S2 in the liquid outlet channel is the same as the liquid flow direction S1 in the liquid inlet channel.
  • the cross-sectional areas of the fourth branch channel 360a and the fifth branch channel 370a can be measured using the same method as that of measuring the cross sections of the first branch channel 5a and the second branch channel 6a, which will not be described here for brevity.
  • the third main channel 3 is located upstream of the fourth main channel 4.
  • there is also a flow imbalance between the third main channel 3 and the fourth main channel 4 with the flow rate of the liquid in the third main channel 3 being greater than the flow rate of the liquid in the fourth main channel 4. Therefore, it is necessary to balance the flow rates of the liquid in the third main channel 3 and the fourth main channel 4.
  • the fourth group of flow channels 360 connects the third flow channel with the liquid outlet flow channel 340, and the fourth group of flow channels 360 is capable of directing liquid out of the third main channel 3.
  • the fifth group of flow channels 370 connects the fourth main channel 4 with the liquid outlet flow channel 340, and the fifth group of flow channels 370 is capable of directing liquid out of the fourth main channel 4.
  • the fifth group of flow channels 370 is located downstream of the fourth group of flow channels 360, and the sum of the cross-sectional areas of the fifth group of flow channels 370 is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360.
  • the first main channel 1 , the second main channel 2 , the third main channel 3 and the fourth main channel 4 are sequentially arranged along the first direction Y.
  • the first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4 all extend linearly along the second direction X, and have the same extension length.
  • the first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4 are arranged in sequence along the first direction X.
  • the first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4 are arranged in sequence along the first direction Y. This can reduce the size of the channel in the second direction X, allowing the channel layout to be more compact, thereby obtaining a smaller thermal management component 300 and improving the energy density of the battery using the thermal management component.
  • the first main channel 1 has a first outflow end 1d opposite to the first inflow end
  • the second main channel 2 has a second outflow end 2d opposite to the second inflow end 2c
  • the third main channel 3 has a third inflow end 3d opposite to the third outflow end 3c
  • the fourth main channel 4 has a fourth inflow end 4d opposite to the fourth outflow end 4c
  • the thermal management component 300 also has a second connecting flow channel 8, which connects the first outflow end 1d, the second outflow end 2d, the third inflow end 3d and the fourth inflow end 4d.
  • first main channel 1 is connected to the second connecting channel 8, and the other end of the first main channel 1 is connected to the liquid inlet channel 330 via the first group of channels 5.
  • One end of the second main channel 2 is connected to the second connecting channel 8, and the other end of the second main channel 2 is connected to the liquid inlet channel 330 via the second group of channels 6.
  • One end of the third main channel 3 is connected to the second connecting channel 8, and the other end of the third main channel 3 is connected to the liquid outlet channel 340 via the fourth group of channels 360; one end of the fourth main channel 4 is connected to the second connecting channel 8, and the other end of the fourth main channel 4 is connected to the liquid outlet channel 340 via the fifth group of channels 370.
  • the first outflow end 1d, the second outflow end 2d, the third inflow end 3d and the fourth inflow end 4d are respectively connected to the second connecting flow channel 8, so that the second connecting flow channel 8 can gather the liquid flowing out of the first main channel 1 and the second main channel 2, and divert the liquid to the third main channel 3 and the fourth main channel 4, thereby balancing the flow rate of the liquid in the first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4, thereby further improving the flow uniformity of the thermal management component 300, improving the heat exchange effect of the thermal management component 300, improving the cycle performance of the battery cell 10, and improving the reliability of the battery 100.
  • the second communication channel 8 extends along the first direction.
  • the thermal management component 300 has a liquid outlet 320 , which is disposed at one end of the liquid outlet channel 340 .
  • the fifth group of flow channels 370 is downstream of the fourth group of flow channels 360
  • the liquid outlet 320 is downstream of the fifth group of flow channels 370 .
  • the thermal management component 300 further includes a third communicating flow channel 9 , which is disposed between the third outflow end 3 c and the fourth outflow end 4 c along the first direction Y and is communicated with the third outflow end 3 c and the fourth outflow end 4 c, respectively.
  • the third communication flow channel 9 is located between the third main flow channel 3 and the fourth main flow channel 4 , and the third communication flow channel 9 extends linearly along the first direction Y.
  • the third connecting flow channel 9 is respectively connected to the third outflow end 3c and the fourth outflow end 4c. It can be understood that, in addition to the fourth group of flow channels 360, the third connecting flow channel 9 can also discharge the liquid in the third main flow channel 3. In this way, the flow resistance can be further reduced, the pressure drop of the liquid can be alleviated, and the total flow rate of the liquid in thermal management can be increased, thereby improving the heat exchange effect of the thermal management component 300.
  • the thermal management component 300 further includes a sixth group of flow channels 380 , the sixth group of flow channels 380 including at least one sixth branch flow channel 380 a, and the third connecting flow channel 9 is connected to the liquid outlet flow channel 340 through the sixth group of flow channels 380 ; along the second direction X, the projection of the sixth group of flow channels 380 falls within the projection of the third connecting flow channel 9 .
  • the sixth group of flow channels 380 connects the third connecting flow channel 9 with the liquid outlet flow channel 340, and the sixth group of flow channels 380 can discharge liquid from the third connecting flow channel 9.
  • the liquid in the third main flow channel 3 can partially enter the sixth group of flow channels 380, and the liquid in the fourth main flow channel 4 can also partially enter the sixth group of flow channels 380.
  • the number of the sixth branch channel 380a can be one or more.
  • the number of the sixth branch channel 380a is one.
  • sixth branch channel 380 a there is one sixth branch channel 380 a , the sixth group of channels 380 extends along the second direction X, and the second group of channels 6 , the fourth group of channels 360 and the fifth group of channels 370 are parallel to each other.
  • the third connecting flow channel 9 is connected to the liquid outlet flow channel 340 via the sixth group of flow channels 380.
  • the sixth group of flow channels 380 can guide the liquid out of the third connecting flow channel 9, further reducing flow resistance, alleviating the pressure drop of the liquid, and increasing the total flow rate of the liquid during thermal management, thereby improving the heat exchange effect of the thermal management component 300.
  • it can also alleviate the occurrence of backflow and turbulence caused by the large flow rate and excessive flow rate of the liquid in the third main flow channel 3, which may cause the liquid to flow back into the fourth main flow channel 4.
  • backflow refers to the phenomenon that the liquid in the third main flow channel 3 flows out from the third outflow end 3c but cannot be discharged in time and enters the fourth main flow channel 4 through the fourth outflow end 4c.
  • the sum of the cross-sectional areas of the sixth group of flow channels 380 is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360 , and the sum of the cross-sectional areas of the sixth group of flow channels 380 is less than the sum of the cross-sectional areas of the fifth group of flow channels 370 .
  • the cross-sectional area of the sixth branch channel 380a is the sum of the cross-sectional areas of the sixth group of channels 380. If there are multiple sixth branch channels 380a, the sum of the cross-sectional areas of the multiple sixth branch channels 380a is the sum of the cross-sectional areas of the sixth group of channels 380.
  • the cross-sectional area of the sixth branch channel 380a can be measured using the same measurement method as that of the first branch channel 5a and the second branch channel 6a, which will not be repeated here for the sake of brevity.
  • the cross-sectional areas of the fourth flow channel group, the sixth flow channel group, and the fifth flow channel group increase successively.
  • the resistance encountered by the liquid decreases successively, which is beneficial to increasing the flow rate of the liquid in the thermal management component 300, and is beneficial to improving the flow uniformity of the thermal management component 300, thereby improving the heat exchange effect of the thermal management component 300.
  • the liquid outlet channel 340 includes a second upstream section 340a located upstream of the fifth group of channels 370 and a second downstream section 340b located downstream of the fifth group of channels 370, the fourth group of channels 360 is connected to the second upstream section 340a, and the cross-sectional area of the second upstream section 340a is greater than the sum of the cross-sectional areas of the fourth group of channels 360.
  • the cross-sectional area of the second upstream section 340a is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360.
  • the second upstream section 340a is larger, and the pressure of the liquid in the second upstream section 340a is lower.
  • the second upstream section 340a and the second downstream section 340b can be arranged in various forms.
  • the second upstream section 340a and the second downstream section 340b can be arranged along the first direction Y to form a straight liquid outlet channel 340.
  • the second upstream section 340a and the second downstream section 340b are arranged at an angle.
  • the second upstream section 340a and the second downstream section 340b are arranged at a discount.
  • the liquid in the second upstream section 340a needs to pass through the corner to enter the second downstream section 340b.
  • the corner refers to the turning position between the second upstream section 340a and the second downstream section 340b.
  • the second upstream section 340a and the second downstream section 340b are arranged at an obtuse angle, which can reduce the resistance to the liquid at the turning point.
  • the cross-sectional area of the second downstream section 340b is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360.
  • the liquid in the second upstream section 340a is subjected to less pressure.
  • the second upstream section 340a can alleviate the pressure drop, thereby obtaining a thermal management component 300 with a smaller overall pressure drop, which is beneficial to improving the heat exchange effect of the thermal management component 300.
  • the cross-sectional area of the second downstream section 340b is greater than that of the second upstream section 340a, and the cross-sectional area of the second upstream section 340a is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360. This further alleviates the pressure drop of the thermal management component 300.
  • the liquid outlet 320 is disposed in the second downstream section 340 b , one end of the second downstream section 340 b is connected to the second upstream section 340 a , and the other end of the second downstream section 340 b is connected to the liquid outlet 320 .
  • the third main channel 3 has a fifth wall 3a and a sixth wall 3b opposite to each other along the first direction Y, and the third outflow end 3c is provided with a third spoiler 430; along the first direction Y, the third spoiler 430 is spaced apart from the fifth wall 3a, and the third spoiler 430 is spaced apart from the sixth wall 3b; along the second direction X, the third spoiler 430 is spaced apart from the fourth group of flow channels 360.
  • the fifth wall 3a and the sixth wall 3b are the two groove walls of the groove in the corresponding area of the third main channel 3, and a gap is set between the third spoiler 430 and the two groove walls of the groove.
  • the fifth wall 3a and the sixth wall 3b are hereinafter referred to as the edges of the third main channel 3.
  • the area between the fifth wall 3a and the sixth wall 3b is the center of the third main channel 3.
  • the fifth wall 3a and the sixth wall 3b create resistance to the liquid flow. This results in a low flow velocity and flow rate at the edges of the third main channel 3.
  • the third spoiler 430 can divert the liquid at the third outflow end 3c so that the liquid can first flow to the position of the fifth wall 3a and the sixth wall 3b and then flow out of the third main channel 3, thereby alleviating the problem of uneven liquid flow rate in the third main channel 3 caused by the resistance of the fifth wall 3a and the sixth wall 3b to the liquid.
  • the fourth main channel 4 also has the problem of uneven flow velocity.
  • the fourth main channel 4 has a seventh wall 4a and an eighth wall 4b opposite to each other along the first direction Y, and the fourth outflow end 4c is provided with a fourth spoiler 440; along the first direction Y, the fourth spoiler 440 is spaced apart from the seventh wall 4a, and the fourth spoiler 440 is spaced apart from the eighth wall 4b; along the second direction X, the fourth spoiler 440 is spaced apart from the fifth group of flow channels 370.
  • the fourth spoiler 440 has the same function as the third spoiler 430 , and for the sake of brevity, details thereof will not be repeated here.
  • the fourth spoiler 440 can divert the liquid at the fourth outflow end 4c so that the liquid can first flow to the seventh wall 4a and the eighth wall 4b and then flow out of the fourth main channel 4, thereby alleviating the problem of uneven liquid flow rate in the fourth main channel 4 caused by the resistance of the seventh wall 4a and the eighth wall 4b to the liquid.
  • An embodiment of the present application further provides a battery 100 , which includes the thermal management component 300 provided in any of the above embodiments.
  • An embodiment of the present application further provides an electric device, which includes the battery 100 provided in any of the above embodiments, and the battery 100 is used to power the electric device.
  • An embodiment of the present application also provides a thermal management component 300, which has a liquid inlet 310, a liquid outlet 320, a liquid inlet channel 330, a liquid outlet channel 340, a first main channel 1, a second main channel 2, a third main channel 3, a fourth main channel 4, a first group of channels 5, a second group of channels 6, a third group of channels 350, a fourth group of channels 360, a fifth group of channels 370, a sixth group of channels 380, a first connecting channel 7, a second connecting channel 8 and a third connecting channel 9.
  • the first main channel 1 , the second main channel 2 , the third main channel 3 and the fourth main channel 4 are arranged side by side along the first direction Y at intervals.
  • the first main channel 1 has an opposing first inflow end and a first outflow end 1d
  • the second main channel 2 has an opposing second inflow end 2c and a second outflow end 2d
  • the third main channel 3 has an opposing third inflow end 3d and a third outflow end 3c
  • the fourth main channel 4 has an opposing fourth inflow end 4d and a fourth outflow end 4c.
  • the second direction X is perpendicular to the first direction Y.
  • the second connecting channel 8 connects the first outflow end 1d, the second outflow end 2d, the third inflow end 3d, and the fourth inflow end 4d.
  • the first group of flow channels 5 includes at least one first branch channel 5a, and the first inflow end is connected to the liquid inlet channel 330 through the first group of flow channels 5.
  • the second group of flow channels 6 includes at least one second branch channel 6a, and the second inflow end 2c is connected to the liquid inlet channel 330 through the second group of flow channels 6.
  • the first connecting flow channel 7 is arranged between the first inflow end and the second inflow end 2c, and is connected to the first inflow end and the second inflow end 2c, respectively.
  • the third group of flow channels 350 includes at least one third branch channel 350a, and the first connecting flow channel 7 is connected to the liquid inlet channel 330 through the third group of flow channels 350; along the second direction X, the projection of the third group of flow channels 350 falls within the projection of the first connecting flow channel 7.
  • the second group of flow channels 6 is located downstream of the first group of flow channels 5
  • the third group of flow channels 350 is located between the first group of flow channels 5 and the second group of flow channels 6.
  • the sum of the cross-sectional areas of the third group of flow channels 350 is greater than the sum of the cross-sectional areas of the first group of flow channels 5, and the sum of the cross-sectional areas of the third group of flow channels 350 is smaller than the sum of the cross-sectional areas of the second group of flow channels 6.
  • the fourth group of flow channels 360 includes at least one fourth branch flow channel 360a.
  • the third outflow end 3c is connected to the liquid outlet channel 340 via the fourth group of flow channels 360.
  • the fifth group of flow channels 370 includes at least one fifth branch flow channel 370a.
  • the fourth outflow end 4c is connected to the liquid outlet channel 340 via the fifth group of flow channels 370.
  • the sixth group of flow channels 380 includes at least one sixth branch flow channel 380a.
  • the third connecting flow channel 9 is connected to the liquid outlet channel 340 via the sixth group of flow channels 380.
  • the projection of the sixth group of flow channels 380 falls within the projection of the third connecting flow channel 9.
  • the fourth group of flow channels 360 is located upstream of the fifth group of flow channels 370
  • the sixth group of flow channels 380 is located between the fourth group of flow channels 360 and the fifth group of flow channels 370.
  • the sum of the cross-sectional areas of the sixth group of flow channels 380 is greater than the sum of the cross-sectional areas of the fifth group of flow channels 370, and the sum of the cross-sectional areas of the sixth group of flow channels 380 is less than the sum of the cross-sectional areas of the fifth group of flow channels 370.
  • the liquid inlet section includes a first upstream section 330a and a first downstream section 330b.
  • the first upstream section 330a is located upstream of the first group of flow channels 5 in the liquid inlet channel 330
  • the first downstream section 330b is located downstream of the first group of flow channels 5.
  • the second group of flow channels 6 is connected to the first downstream section 330b.
  • the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first group of flow channels 5.
  • the first upstream section 330a and the first downstream section 330b are arranged at an obtuse angle.
  • the outlet channel 340 includes a second upstream section 340a and a second downstream section 340b.
  • the second upstream section 340a is located upstream of the fifth group of channels 370
  • the second downstream section 340b is located downstream of the fifth group of channels 370.
  • the fourth group of channels 360 is connected to the second upstream section 340a.
  • the cross-sectional area of the second upstream section 340a is greater than the sum of the cross-sectional areas of the fourth group of channels 360.
  • the second upstream section 340a and the second downstream section 340b are arranged at an obtuse angle.
  • the liquid inlet 310 is disposed at one end of the first upstream section 330a away from the first downstream section 330b, and the liquid outlet 320 is disposed at one end of the second downstream section 340b away from the second upstream section 340a.
  • the first main channel 1 has a first wall 1a and a second wall 1b opposite to each other along the first direction Y, and a first spoiler 410 is provided at the first inflow end; along the first direction Y, the first spoiler 410 is spaced apart from the first wall 1a, and the first spoiler 410 is spaced apart from the second wall 1b; along the second direction X, the first spoiler 410 is spaced apart from the first group of flow channels 5.
  • the second main flow channel 2 has a third wall 2a and a fourth wall 2b that are opposite to each other along the first direction Y.
  • the second inflow end 2c is provided with a second spoiler 420.
  • the second spoiler 420 is spaced apart from the third wall 2a, and the second spoiler 420 is spaced apart from the fourth wall 2b.
  • the second spoiler 420 is spaced apart from the second group of flow channels 6.
  • the third main channel 3 has a fifth wall 3a and a sixth wall 3b opposite to each other along the first direction Y, and the third outflow end 3c is provided with a third spoiler 430; along the first direction Y, the third spoiler 430 is spaced apart from the fifth wall 3a, and the third spoiler 430 is spaced apart from the sixth wall 3b; along the second direction X, the third spoiler 430 is spaced apart from the fourth group of flow channels 360.
  • the fourth main channel 4 has a seventh wall 4a and an eighth wall 4b opposite to each other along the first direction Y, and the fourth inflow end 4d is provided with a fourth spoiler 440; along the first direction Y, the fourth spoiler 440 is spaced apart from the seventh wall 4a, and the fourth spoiler 440 is spaced apart from the eighth wall 4b; along the second direction X, the fourth spoiler 440 is spaced apart from the fifth group of flow channels 370.
  • a plurality of fifth spoilers 450 are further provided in the first main channel 1 , the second main channel 2 , the third main channel 3 , the fourth main channel 4 and the second connecting channel 8 .
  • the plurality of fifth spoilers 450 are arranged in sequence along the flow direction of the liquid to improve the flow uniformity of the thermal management component 300 .
  • the sum of the cross-sectional areas of the third group of flow channels 350 is greater than the sum of the cross-sectional areas of the first group of flow channels 5, and the sum of the cross-sectional areas of the third group of flow channels 350 is smaller than the sum of the cross-sectional areas of the second group of flow channels 6.
  • the sum of the cross-sectional areas of the sixth group of flow channels 380 is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360.
  • the sum of the cross-sectional areas of the sixth group of flow channels 380 is smaller than the sum of the cross-sectional areas of the fifth group of flow channels 370. This balances the flow rates of the third main flow channel 3 and the fourth main flow channel 4 and alleviates the pressure drop near the liquid outlet flow channel 340, thereby improving the flow uniformity and reliability of the thermal management component 300.
  • the first spoiler 410 can balance the flow velocity at the edge and middle of the first main channel 1
  • the second spoiler 420 can balance the flow velocity at the edge and middle of the second main channel 2
  • the third spoiler 430 can balance the flow velocity at the edge and middle of the third main channel 3
  • the fourth spoiler 440 can balance the flow velocity at the edge and middle of the fourth main channel 4, further improving the flow uniformity and reliability of the thermal management component 300.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Abstract

本申请公开了一种热管理部件、电池及用电设备。热管理部件具有进液流道、第一主流道、第二主流道以及沿第一方向并排设置的第一组流道和第二组流道;在第二方向上,第一主流道具有第一流入端,第二主流道具有第二流入端,第二方向与第一方向相交;第一组流道包括至少一个第一分流道,第一流入端通过第一组流道与进液流道连通。第二组流道包括至少一个第二分流道,第二流入端通过第二组流道与进液流道连通;沿第二方向,第一组流道的投影落入第一流入端的投影内,第二组流道的投影落入第二流入端的投影内。其中,沿进液流道中的液体流动方向,第二组流道位于第一组流道的下游,第二组流道的横截面积之和大于第一组流道的横截面积之和。

Description

热管理部件、电池及用电设备
相关申请的交叉引用
本申请要求享有于2024年01月30日提交的名称为“热管理部件、电池及用电设备”的中国专利申请202410130189.X的优先权,该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域,具体而言,涉及一种热管理部件、电池及用电设备。
背景技术
随着新能源技术的发展,电池的应用越来越广泛,电池具有较高的能量密度、较高的可靠性、长使用寿命以及对社会环境的绿色环保性,已经被广泛应用于乘用车、商用车、电动自行车、重卡、储能设施、换电站、工程制造、智能器械等方面,同时也推动通信端、医疗器械、能源开发等方面技术开发及研究。
在电池技术中,电池单体温度过高或过低,都会导致电池单体的循环性能下降,使电池的可靠性降低。如何提高电池单体的循环寿命,提高电池的可靠性,是电池技术中一个亟待解决的问题。
发明内容
本申请实施例提供一种热管理部件、电池及用电设备,能够提高热管理部件的均流性,从而提高电池的可靠性。
第一方面,本申请实施例提供一种热管理部件,所述热管理部件具有进液流道、第一组流道、第二组流道、第一主流道和第二主流道;所述第一主流道和所述第二主流道沿第一方向并排间隔设置;在第二方向上,所述第一主流道具有第一流入端,所述第二主流道具有第二流入端,所述第二方向与所述第一方向相交;所述第一组流道包括至少一个第一分流道,所述第一流入端通过所述第一组流道与所述进液流道连通;所述第二组流道包括至少一个第二分流道,所述第二流入端通过所述第二组流道与所述进液流道连通;沿所述第二方向,所述第一组流道的投影落入所述第一流入端的投影内,所述第二组流道的投影落入所述第二流入端的投影内;其中,沿所述进液流道中的液体流动方向,所述第二组流道位于所述第一组流道的下游,所述第二组流道的横截面积之和大于所述第一组流道的横截面积之和。
上述技术方案中,第一组流道将第一主流道与进液流道连通,第一组流道将液体导入第一主流道,第二组流道将第二主流道与进液流道连通,第一组流道将液体导入第二主流道。第二组流道位于第一组流道的下游,第二组流道的横截面积之和大于第一组流道的横截面积之和,这样,能够提升进入第二主流道的液体的流量,降低第一主流道中液体的流量与第二主流道中液体的流量的差值,使得分配到第一主流道和第二主流道中的液体流量更为均匀,第一主流道和第二主流道中的液体流速更接近,从而提高热管理部件的均流性,提高热管理部件的换热效果,提高电池单体的循环性能,提高电池的可靠性。
在一些实施例中,所述第一分流道的数量为一个,所述第二分流道的数量为一个,所述第二分流道的横截面积大于所述第一分流道的横截面积。
上述技术方案中,一个第一分流道将液体导入第一主流道,一个第二分流道将液体导入第二主流道,第一分流道和第二分流道的数量少,能够降低热管理部件的制备难度。
在一些实施例中,沿所述第一方向,所述第一分流道的宽度为W1,所述第二分流道的宽度为W2,满足,10mm≤W1≤20mm,15mm≤W2≤25mm。
上述技术方案中,10mm≤W1,第一分流道不会太窄,能够缓解第一分流道内液体的压降;W1≤20mm,第一分流道不会太宽,这样第一分流道5a内液体流量不会太大,有利于提高热管理部件的均流性;因此,10mm≤W1≤20mm,能够兼顾热管理部件的压降与均流性。
15mm≤W2,第二分流道不会太窄,能够缓解第二分流道内液体的压降且第二分流道内具有较大的液体流量;W2≤25mm,第二分流道不会太大,能够获得体积较小的热管理部件,因此,15mm≤W2≤25mm,能够兼顾热管理部件的压降与体积。
在一些实施例中,所述第一分流道的数量为多个,多个所述第一分流道沿所述第一方向间隔设置,所述第二分流道的数量为一个,所述第二分流道的横截面积大于所有所述第一分流道的横截面积之和。
上述技术方案中,通过多个第一分流道将液体导入第一主流道,通过一个第二分流道将液体导入第二主流道,从而提高热管理部件的均流性。
在一些实施例中,所述第一分流道的数量为一个,所述第二分流道的数量为多个,多个所述第二分流道沿所述第一方向间隔设置,所有所述第二分流道的横截面积之和大于所述第一分流道的横截面积。
上述技术方案中,通过一个第一分流道将液体导入第一主流道,通过多个第二分流道将液体导入第二主流道,从而提高热管理部件的均流性。
在一些实施例中,所述第一分流道的数量为多个,多个所述第一分流道沿所述第一方向间隔设置;所述第二分流道的数量为多个,多个所述第二分流道沿所述第一方向间隔设置,所有所述第二分流道的横截面积之和大于所有所述第一分流道的横截面积之和。
上述技术方案中,通过多个第一分流道将液体导入第一主流道,通过多个第二分流道将液体导入第二主流道,第一分流道和第二分流道的数量均为多个,便于在不同位置根据需要布置第一分流道和第二分流道,以提高热管理部件的均流性,且降低热管理部件的制备难度。
在一些实施例中,所述热管理部件具有进液口,所述进液口设置于所述进液流道的一端。
在一些实施例中,所述热管理部件还具有第一连通流道,沿所述第一方向,所述第一连通流道设置于所述第一流入端和所述第二流入端之间,且分别与所述第一流入端和所述第二流入端连通。
上述技术方案,第一连通流道分别与第一流入端和第二流入端连通,第一连通流道能够将第一主流道的第一流入端处的液体导入第二主流道,这样,能够降低流阻,缓解液体的压降,提高热管理中液体的总流量,从而提高热管理部件的换热效果。
在一些实施例中,所述热管理部件还具有第三组流道,所述第三组流道包括至少一个第三分流道,所述第一连通流道通过所述第三组流道与所述进液流道连通;沿所述第二方向,所述第三组流道的投影落入所述第一连通流道的投影内。
上述技术方案,第一连通流道通过第三组流道与进液流道连通,第三分流道能够将液体导入第一连通流道,能够进一步降低流阻,缓解液体的压降,提高热管理中液体的总流量,从而提高热管理部件的换热效果。
在一些实施例中,所述第三组流道的横截面积之和大于所述第一组流道的横截面积之和,所述第三组流道的横截面积之和小于所述第二组流道的横截面积之和。
上述技术方案,第一流道组的横截面积、第三流道组的横截面积和第二流道组的横截面积依次增大,这样,沿进液流道中液体的流动方向,液体受到的阻力依次降低,有利于提升热管理部件中液体的总流量,从而提高热管理部件的换热效果。
在一些实施例中,沿所述进液流道中的液体流动方向,所述进液流道包括位于所述第一组流道的上游的第一上游段和位于所述第一组流道的下游的第一下游段,所述第二组流道连接于所述第一下游段,所述第一下游段的横截面积大于所述第一组流道的横截面积之和。
上述技术方案,第一下游段的横截面积大于所述第一组流道的横截面积之和,这样,相比第一组流道,液体更容易进入第一下游段,从而通过第二组流道流入第二主流道,从而进一步提高热管理部件的均流性。
在一些实施例中,所述第一下游段的宽度为W3,满足,15mm≤W3≤25mm。
上述技术方案中,15mm≤W3,第一下游段不会太窄,能够缓解第一下游段内的液体的压降,W3≤25mm,第一下游段不会太宽,能够减小第一下游段的宽度,从而获得体积较小的热管理部件。因此,15mm≤W3≤25mm,能够兼顾热管理部件的压降与体积。
在一些实施中,所述第一下游段沿所述第一方向延伸。
上述技术方案,第一下游段沿所述第一方向延伸,第一主流道和第二主流道的排布方向与第一下游段的延伸方向相同,这样,允许第一下游段、第一主流道和第二主流道能够布局得更紧凑,从而获得热体积较小的热管理部件,提高使用该热管理部件的电池的能量密度。
在一些实施例中,所述第一上游段相对所述第一下游段倾斜设置。
上述技术方案,第一上游段相对第一下游段倾斜设置,以使第一上游段和第一下游段呈夹角设置,这样,在第一上游段的长度和第一下游段的长度一定的情况下,进液流道整体在第一方向和第二方向上占用尺寸较小,能够获得体积较小的热管理部件,提高使用该热管理部件的电池的能量密度。
在一些实施例中,所述第一主流道具有沿所述第一方向相对的第一壁和第二壁,所述第一流入端设置有第一扰流件;沿所述第一方向,所述第一扰流件与所述第一壁间隔设置,所述第一扰流件与所述第二壁间隔设置;沿所述第二方向,所述第一扰流件与所述第一组流道间隔设置。
上述技术方案中,第一扰流件能够对第一流入端的液体进行分流,以使液体能够先往第一壁和第二壁的位置流动,以缓解第一壁和第二壁对液体的阻力而引起的第一主流道中液体流速不均的问题。
在一些实施例中,所述第二主流道具有沿所述第一方向相对的第三壁和第四壁,所述第二流入端设置有第二扰流件;沿所述第一方向,所述第二扰流件与所述第三壁间隔设置,所述第二扰流件与所述第四壁间隔设置;沿所述第二方向,所述第二扰流件与所述第二组流道间隔设置。
上述技术方案中,第二扰流件能够对第二流入端的液体进行分流,以使液体能够先往第三壁和第四壁的位置流动,以缓解第三壁和第四壁对液体的阻力而引起的第二主流道中液体流速不均的问题。
在一些实施例中,所述热管理部件还具有出液流道、第四组流道、第五组流道、第三主流道和第四主流道;所述第三主流道和所述第四主流道沿所述第一方向并排间隔设置;在所述第二方向上,所述第三主流道具有第三流出端,所述第四主流道具有第四流出端;所述第四组流道包括至少一个第四分流道,所述第三流出端通过所述第四组流道与所述出液流道连通;所述第五组流道包括至少一个第五分流道,所述第四流出端通过所述第五组流道与所述出液流道连通;沿所述第二方向,所述第四组流道的投影落入所述第三流出端的投影内,所述第五组流道的投影落入所述第四流出端的投影内;其中,沿所述出液流道中的液体流动方向,所述第四组流道位于所述第五组流道的上游,所述第四组流道的横截面积之和大于所述第五组流道的横截面积之和。
上述技术方案中,第四组流道将第三流道与出液流道连通,第四组流道将液体导出第三主流道,第五组流道将第四主流道与出液流道连通,第五组流道将液体导出第四主流道。第五组流道位于第四组流道的下游,第五组流道的横截面积之和大于第四组流道的横截面积之和,这样,能够提升从第四主流道流出的液体的流量,降低第三主流道中的液体流量与第四主流道中的液体流量的差值,使得分配到第三主流道和第四主流道中液体的流道更为均匀,从而进一步提高热管理部件的均流性,提高热管理部件的换热效果,提高电池单体的循环性能,提高电池的可靠性。
在一些实施例中,所述第一主流道、所述第二主流道、所述第三主流道和所述第四主流道沿所述第一方向依次设置。
上述技术方案中,第一主流道、第二主流道、第三主流道和第四主流道沿第一方向依次设置,这样能够减小流道在第二方向的尺寸占用,流道的布局紧凑,能够获得体积较小的热管理部件,提高使用该热管理部件的电池的能量密度。
在一些实施例中,在所述第二方向上,所述第一主流道具有与所述第一流入端相对的第一流出端,所述第二主流道具有与所述第二流入端相对的第二流出端,所述第三主流道具有与所述第三流出端相对的第三流入端,所述第四主流道具有与所述第四流出端相对的第四流入端;所述热管理部件还具有第二连通流道,所述第二连通流道连通所述第一流出端、所述第二流出端、所述第三流入端和所述第四流入端。
上述技术方案中,第一流出端、第二流出端、第三流入端和第四流入端分别与第二连通流道连通,从而第二连通流道能够汇聚第一主流道和第二主流道流出的液体,并将液体分流至第三主流道和第四主流道,从而均衡第一主流道、第二主流道、第三主流道和第四主流道中液体的流量,从而进一步提高热管理部件的均流性,提高热管理部件的换热效果,提高电池单体的循环性能,提高电池的可靠性。
在一些实施例中,所述热管理部件具有出液口,所述出液口设置于所述出液流道的一端。
在一些实施例中,所述热管理部件还具有第三连通流道,沿所述第一方向,所述第三连通流道设置于所述第三流出端和所述第四流出端之间,且分别与所述第三流出端和所述第四流出端连通。
上述技术方案中,第三连通流道分别与第三流出端和第四流出端连通,除第四组流道外,第三连通流道也能够将第三主流道中的液体导出,这样,能够进一步降低流阻,缓解液体的压降,提高热管理中液体的流量,从而提高热管理部件的换热效果。
在一些实施例中,所述热管理部件还具有第六组流道,所述第六组流道包括至少一个第六分流道,所述第三连通流道通过所述第六组流道与所述出液流道连通;沿所述第二方向,所述第六组流道的投影落入所述第三连通流道的投影内。
上述技术方案中,第三连通流道通过第六组流道与出液流道连通,第六组流道能够将液体从第三连通流道导出,能够进一步降低流阻,缓解液体的压降,提高热管理中液体的流量,从而提高热管理部件的换热效果。
在一些实施例中,所述第六组流道的横截面积之和大于所述第四组流道的横截面积之和,所述第六组流道的横截面积之和小于所述第五组流道的横截面积之和。
上述技术方案中,第四流道组的横截面积、第六流道组的横截面积和第五流道组的横截面积依次增大,这样,沿出液流道中的液体流动方向,液体受到的阻力依次降低,有利于在提升热管理部件中液体的流量,有利于提高热管理部件的均流性,从而提高热管理部件的换热效果。
在一些实施例中,沿所述出液流道中的液体流动方向,所述出液流道包括位于所述第五组流道的上游的第二上游段和位于所述第五组流道的下游的第二下游段,所述第四组流道连接于所述第二上游段,所述第二上游段的横截面积大于所述第四组流道的横截面积之和。
上述技术方案中,第二下游段的横截面积大于所述第四组流道的横截面积之和,这样,相比第四组流道中的液体,第二上游段中液体受到的压力小,第二上游段能够缓解压降,从而得到总体压降更小的热管理部件,有利于提高热管理部件的换热效果。
在一些实施例中,所述第三主流道具有沿所述第一方向相对的第五壁和第六壁,所述第三流出端设置有第三扰流件;沿所述第一方向,所述第三扰流件与所述第五壁间隔设置,所述第三扰流件与所述第六壁间隔设置;沿所述第二方向,所述第三扰流件与所述第四组流道间隔设置。
上述技术方案中,第三扰流件能够对第三流出端的液体进行分流,以使液体能够先往第五壁和第六壁位置流动从而流出第三主流道,以缓解第五壁和第六壁对液体的阻力而引起的第三主流道中液体流速不均的问题。
在一些实施例中,所述第四主流道具有沿所述第一方向相对的第七壁和第八壁,所述第四流出端设置有第四扰流件;沿所述第一方向,所述第四扰流件与所述第七壁间隔设置,所述第四扰流件与所述第八壁间隔设置;沿所述第二方向,所述第四扰流件与所述第五组流道间隔设置。
上述技术方案中,第四扰流件能够对第四流出端的液体进行分流,以使液体能够先往第七壁和第八壁位置流动从而流出第四主流道,以缓解第七壁和第八壁对液体的阻力而引起的第四主流道中液体流速不均的问题。
第二方面,本申请实施例提供一种电池,电池包括第一方面任一实施例提供的热管理部件。
第三方面,本申请实施例提供一种用电设备,用电设备包括第二方面任一实施例提供的电池,所述电池用于为所述用电设备供电。
附图说明
为了更清楚地说明本申请实施例的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,应当理解,以下附图仅示出了本申请的某些实施例,因此不应被看作是对范围的限定,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例的车辆的结构示意图;
图2为本申请一些实施例的电池的分解示意图;
图3为本申请一些实施例的热管理部件的结构示意图;
图4为本申请一些实施例的热管理部件的内部结构示意图;
图5为图4所示热管理部件中液体流动方向示意图;
图6为本申请一些实施例的热管理部件的局部放大图;
图7为本申请另一些实施例的热管理部件的内部结构示意图;
图8为图7所示热管理部件中液体流动方向示意图;
图9为本申请又一些实施例的热管理部件的内部结构示意图;
图10为图9所示热管理部件中液体流动方向示意图;
图11为本申请再一些实施例的热管理部件的内部结构示意图;
图12为图11所示热管理部件中液体流动方向示意图。
图标:300-热管理部件;310-进液口;320-出液口;330-进液流道;330a-第一上游段;330b-第一下游段;340-出液流道;340a-第二上游段;340b-第二下游段;1-第一主流道;1a-第一壁;1b-第二壁;1c第一流入端;1d-第一流出端;2-第二主流道;2a-第三壁;2b-第四壁;2c-第二流入端;2d-第二流出端;3-第三主流道;3a-第五壁;3b-第六壁;3d-第三流入端;3c-第三流出端;4-第四主流道;4a-第七壁;4b-第八壁;4d-第四流入端;4c-第四流出端;5-第一组流道;5a-第一分流道;6-第二组流道;6a-第二分流道;7-第一连通流道;8-第二连通流道;9-第三连通流道;350-第三组流道;350a-第三分流道;360-第四组流道;360a-第四分流道;370-第五组流道;370a-第五分流道;380-第六组流道;380a-第六分流道;410-第一扰流件;420-第二扰流件;430-第三扰流件;440-第四扰流件;450-第五扰流件;100-电池;10-电池单体;20-箱体;21-第一部分;22-第二部分;23-容纳空间;1000-车辆;200-马达;400-控制器;Y-第一方向;X-第二方向;S1-进液流道中的液体流动方向;S2-出液流道中的液体流动方向。
各附图未按实际比例绘制。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
除非另有定义,本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同;本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本申请;本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形,意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象,而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的独立的或备选的实施例。
在本申请的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“附接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请的描述中,需要说明的是,除非另有说明,“多个”的含义是两个以上;术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。此外,术语“第一”、“第二”、“第三”等仅用于描述目的,而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直,而是在误差允许范围之内。“平行”并不是严格意义上的平行,而是在误差允许范围之内。
本申请中术语“或”,仅仅是一种描述关联对象的关联关系,表示可以存在两种关系,例如,A或B,可以表示:单独存在A,单独存在B这两种情况。
在本申请的实施例中,相同的附图标记表示相同的部件,并且为了简洁,在不同实施例中,省略对相同部件的详细说明。应理解,附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸,以及集成装置的整体厚度、长宽等尺寸仅为示例性说明,而不应对本申请构成任何限定。
本申请中出现的“多个”指的是两个以上(包括两个)。
本申请中,电池单体可以包括但不限于锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等。电池单体包括但不限于圆柱体、扁平体、长方体或其它形状等。电池单体一般按封装的方式包括柱形电池单体、方形电池单体和软包电池单体等。
电池单体包括电极组件和电解液,电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作,金属离子(例如锂离子)在正极和负极之间往返嵌入和脱出。隔离膜设置在正极和负极之间,可以起到防止正极片和负极片短路的作用,同时可以使活性离子通过。
正极片包括正极集流体和正极活性物质层,正极活性物质层涂覆于正极集流体的表面,未涂敷正极活性物质层的正极集流体凸出于已涂覆正极活性物质层的正极集流体,未涂敷正极活性物质层的正极集流体作为正极极耳。
以锂离子电池为例,正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。正极集流体可采用金属箔片或复合集流体。例如,作为金属箔片,可以采用表面镀银处理的铝、表面镀银处理的不锈钢、不锈钢、铜、铝、镍、炭精电极、碳、镍或钛等。复合集流体可包括高分子材料基层和金属层。复合集流体可通过将金属材料(铝、铝合金、镍、镍合金、钛、钛合金、银及银合金等)形成在高分子材料基材(如聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯乙烯、聚乙烯等的基材)上而形成。
负极片包括负极集流体和负极活性物质层,负极活性物质层涂覆于负极集流体的表面,未涂敷负极活性物质层的负极集流体凸出于已涂覆负极活性物质层的负极集流体,未涂敷负极活性物质层的负极集流体作为负极极耳。
负极集流体可采用金属箔片或复合集流体。例如,作为金属箔片,可以采用表面镀银处理的铝、表面镀银处理的不锈钢、不锈钢、铜、铝、镍、炭精电极、用碳、镍或钛等。负极活性物质可以为碳或硅等。
为了降低极耳通过大电流发生熔断的风险,正极极耳的数量为多个且层叠在一起,负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为PP(polypropylene,聚丙烯)或PE(polyethylene,聚乙烯)等。此外,电极组件可以是卷绕式结构,也可以是叠片式结构。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如,本申请中所提到的电池可以包括电池模块或电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以降低液体或其他异物对电池单体的充电或放电的影响。
在一些实施例中,电池可以为电池模块,电池单体有多个时,多个电池单体排列并固定形成一个电池模块。
在一些实施例中,电池可以为电池包,电池包包括箱体和电池单体,电池单体或电池模块容纳于箱体中。
在一些实施例中,可以首先将多个电池单体(cell)先整合为至少一个电池模组(module),然后将电池模组安装于箱体中,形成电池包(pack)形态。在该实施方式中,电池模组之间还可以设置有横梁等辅助结构件,以提高电池模组在箱体中的安装稳定性。
在一些实施例中,箱体可以作为车辆的底盘结构的一部分。例如,箱体的部分可以成为车辆的地板的至少一部分,或者,箱体的部分可以成为车辆的横梁和纵梁的至少一部分。
在一些实施例中,电池可以为储能装置。储能装置包括储能集装箱、储能电柜等。
电池技术的发展要同时考虑多方面的设计因素,例如,能量密度、循环寿命、放电容量、充放电倍率等性能参数,另外,还需要考虑电池的可靠性。
在电池技术中,电池单体的循环性能与电池单体的温度相关,电池单体使用时产热导致电池单体温度过高,或者环境温度引起电池单体温度过高或过低都会导致电池单体的循环性能下降,因此,通常会在电池的内部设置热管理部件以给多个电池单体调节温度,以使电池单体处于适宜的温度范围内。
热管理部件的内部通常形成有多个供液体流动的主流道,越靠近进液口的主流道中的液体流量越大,流量越快,越远离进液口的主流道中的液体流量较小,流速越小,各主流道中液体的流量不均,热管理部件均流性差,热管理部件不同位置的换热效果不一致,热管理部件调节电池单体温度的能力较差,导致电池单体的循环寿命,影响电池的可靠性。
鉴于此,为了改善热管理部件的流量不均影响电池可靠性的问题,本申请提供了一种技术方案,在进液流道与第一主流道之间设置第一组流道,在第二主流道与进液流道之间设置第二组流道,第二组流道在第一组流道的下游,第二流道组的横截面积之和大于第一流道组的横截面积之和,从而提升进入第二主流道的液体的流量,降低第一主流道中液体的流量与第二主流道中液体的流量的差值,使得分配到第一主流道和第二主流道中的液体的流量更为均匀,从而提高热管理部件的均流性,提高热管理部件的换热效果,提高电池单体的循环性能,提高电池的可靠性。
其中,热管理部件是用于容纳换热介质以给多个电池单体调节温度的部件。调节温度是指给多个电池单体加热或者冷却。容纳换热介质是容纳于热管理部件的流道中的液体。在给电池单体冷却或降温的情况下,该热管理部件用于容纳冷却介质以给多个电池单体降低温度,此时,热管理部件也可以称为冷却部件、冷却系统或冷却板等,其容纳的液体也可以称为冷却介质或冷却液体,更具体的,可以称为冷却液或冷却气体。另外,热管理部件也可以用于加热以给多个电池单体升温。可选的,液体可以为水、水和乙二醇的混合液等。
为了方便描述,后文提及的液体均指换热介质。
本申请实施例公开的技术方案适用于但不限于电池以及使用电池的用电设备。
用电设备可以是车辆、手机、便携式设备、笔记本电脑、轮船、航天器、电动玩具和电动工具等等。车辆可以是燃油汽车、燃气汽车或新能源汽车,新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等;航天器包括飞机、火箭、航天飞机和宇宙飞船等等;电动玩具包括固定式或移动式的电动玩具,例如,游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等;电动工具包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具,例如,电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨等等。
以下实施例为了方便说明,以用电设备为车辆为例进行说明。
请参照图1,图1为本申请一些实施例的车辆1000的结构示意图,车辆1000的内部设置有电池100,电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电,例如,电池100可以作为车辆1000的操作电源。
车辆1000还可以包括控制器400和马达200,控制器400用来控制电池100为马达200供电,例如,用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中,电池100不仅仅可以作为车辆1000的操作电源,还可以作为车辆1000的驱动电源,代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
在一些实施例中,请参照图2,图2为本申请一些实施例的电池100的分解示意图,电池100包括多个电池单体10和热管理部件300。多个电池单体10之间可串联或并联或混联。其中,混联是指多个电池单体10中既有串联又有并联。
在一些实施例中,电池100还可以包括汇流部件(图未示出),多个电池单体10之间可通过汇流部件实现电连接,以实现多个电池单体10的串联或并联或混联。
汇流部件可以是金属导体,比如,铜、铁、铝、钢、铝合金等。
在一些实施例中,电池100还可以包括箱体20,箱体20用于容纳电池单体10。箱体20可以包括第一部分21和第二部分22,第一部分21与第二部分22相互盖合,以限定出用于容纳电池单体10的容纳空间23。当然,第一部分21与第二部分22的连接处可通过密封元件(图未示出)来实现密封,密封元件可以是密封圈、密封胶等。
其中,第一部分21和第二部分22可以是多种形状,比如,长方体、圆柱体等。第一部分21可以是一侧开放的空心结构,第二部分22也可以是一侧开放的空心结构,第二部分22的开放侧盖合于第一部分21的开放侧,则形成具有容纳空间23的箱体20。当然,也可以是第一部分21为一侧开放的空心结构,第二部分22为板状结构,第二部分22盖合于第一部分21的开放侧,则形成具有容纳空间23的箱体20。
参照图2,在一些实施例中,电池100还包括热管理部件300,热管理部件300的内部设置有流道,流道用于液体以调节电池单体10的温度。其中,热管理部件300可以用于在电池单体10的底部调节电池单体10的温度。示例性地,如图2所示,热管理部件300设置于电池单体10的底部,热管理部件300的上表面为换热面,热管理部件300通过上表面与电池单体10进行热交换。热管理部件300也可以用于相邻的两个电池单体10之间,此时热管理部件300厚度方向相对的两个面均为换热面,热管理部件300可以通过两个换热面与电池单体10进行热交换。
本申请实施例提供一种热管理部件300,其能够解决热管理部件300的均流性差影响电池100可靠性的问题,以下结合附图对热管理部件300的具体结构进行详细阐述。
图3为本申请一些实施例的热管理部件300的结构示意图;图4为本申请一些实施例的热管理部件300的内部结构示意图;图5为图4所示热管理部件300中液体流动方向示意图;图6为本申请一些实施例的热管理部件300的局部放大图。
本申请实施例提供一种热管理部件300,参照图3至图6,热管理部件300具有进液流道330、第一组流道5、第二组流道6、第一主流道1和第二主流道2。第一主流道1和第二主流道2沿第一方向Y并排间隔设置。在第二方向X上,第一主流道1具有第一流入端,第二主流道2具有第二流入端2c,第二方向X与第一方向Y相交。
第一组流道5包括至少一个第一分流道5a,第一流入端通过第一组流道5与进液流道330连通。第二组流道6包括至少一个第二分流道6a,第二流入端2c通过第二组流道6与进液流道330连通。
沿第二方向X,第一组流道5的投影落入第一流入端的投影内,第二组流道6的投影落入第二流入端2c的投影内。其中,沿进液流道中的液体流动方向S1,第二组流道6位于第一组流道5的下游,第二组流道6的横截面积之和大于第一组流道5的横截面积之和。
热管理部件300的形状可以多种多样的,热管理部件300可以构造为圆形、矩形、椭圆形、异形等等。示例性地,如图3至图5所示,热管理部件300构造为矩形。
应理解,进液流道330、第一组流道5、第二组流道6、第一主流道1和第二主流道2均为热管理部件300中容纳液体的流道。其中,进液流道330是用于往第一主流道1和第二主流道2输送液体的流道,进液流道330内的液体进入第一主流道1和第二主流道2又称为分流。
需要说明的是,本申请实施例提供的热管理部件300中,与进液流道330连通的主流道可以有多个,即,根据具体的需求,除第一主流道1和第二主流道2外,热管理部件300还可以具有第3个、第4个、第N个与进液流道330连通的主流道。示例性地,如图4和图5所示,热管理部件300具有两个与进液流道330连通的主流道,分别为第一主流道1和第二主流道2,第一主流道1位于第二主流道2的上游。
第一主流道1和第二主流道2沿第一方向Y并排设置,第一主流道1和第二主流道2并联。其中,第一主流道1和第二主流道2的形状可以是多种多样的,第一主流道1和第二主流道2的形状可以相同或者不相同。在第二方向X上,第一主流道1和第二主流道2可以曲线延伸,第一主流道1和第二主流道2也可以直线延伸。示例性地,如图4和图5所示,第一主流道1和第二主流道2均沿直线延伸。
沿第二方向X,第一主流道1具有相对的第一流入端和第一流出端1d,液体从第一流入端进入第一主流道1,并从第一流出端1d流出第一主流道1。同理,第二主流道2具有相对的第二流入端2c和第二流出端2d,液体从第二流入端2c进入第一主流道1,并从第二流出端2d流出第一主流道1。
第一流入端通过第一组流道5与进液流道330连通,是指第一组流道5将第一流入端与进液流道330导通。可理解地,第一组流道5位于第一流入端与进液流道330之间,进液流道330中的液体经过第一组流道5,再进入第一主流道1。可以理解的是,第一组流道5的横截面积会影响第一主流道1中液体流量的大小,第一主流道1中液体的流量与第一组流道5的尺寸相关。
第二流入端2c通过第二组流道6与进液流道330连通,是指第二组流道6将第二流入端2c与进液流道330导通。可理解地,第二组流道6位于第二流入端2c与进液流道330之间,进液流道330中的液体经过第二组流道6,再进入第二主流道2。可以理解的是,第二组流道6的横截面积会影响第二主流道2中液体流量的大小,第二主流道2中液体的流量与第二组流道6的尺寸相关。
第一组流道5包括至少一个第一分流道5a,可理解地,第一分流道5a可以是一个也可以是多个。若第一分流道5a为一个,则第一分流道5a的横截面积即为第一组流道5的横截面积之和;若第一分流道5a为一个,多个第一分流道5a的横截面积相加即得到第一组流道5的横截面积之和。
第二组流道6包括至少一个第二分流道6a,可理解地,第二分流道6a可以是一个也可以是多个。若第二分流道6a为一个,则第二分流道6a的横截面积即为第二组流道6的横截面积之和;若第二分流道6a为多个,多个第二分流道6a的横截面积相加即得到第二组流道6的横截面积之和。
若第一分流道5a或第二分流道6a的横截面为矩形,则横截面的长乘以宽为第一分流道5a或第二分流道6a的横截面积;若第一分流道5a或第二分流道6a的横截面为圆形,测量出圆形对应的半径r,根据圆形面积的计算公式πr2可得到第一分流道5a或第二分流道6a的横截面积;若第一分流道5a或第二分流道6a的横截面为异形,则可以采用割补法或者采用面积测量仪,从而得到第一分流道5a或第二分流道6a的横截面积。
热管理部件300可以一体成型,热管理部件300也可以分体制备。可选地热管理部件300分体制备,具体而言,热管理部件300包括层叠设置的第一板体和第二板体,第一板体面向第二板体的一侧冲压形成凹槽,第一板体覆盖凹槽以形成容纳液体的流道。
由于第一主流道1位于第二主流道2的上游,通常第一主流道1中液体流量会大于第二主流中液体流量,导致热管理部件300流量不均。为了均衡第一主流道1中液体流量和第二流道中液体流量,需要第二组流道6的横截面积大于第一组流道5的横截面积。其中,流道的横截面积大代表该处的液体流量大,液体流量越高。
本实施例中,第一组流道5将第一主流道1与进液流道330连通,第一组流道5将液体导入第一主流道1,第二组流道6将第二主流道2与进液流道330连通,第一组流道5将液体导入第二主流道2。第二组流道6位于第一组流道5的下游,第二组流道6的横截面积之和大于第一组流道5的横截面积之和,这样,能够提升第二主流道2中液体的流量,提升进入第二主流道2的液体的流量,降低第一主流道1中液体的流量与第二主流道2中液体的流量的差值,使得分配到第一主流道1和第二主流道2中的液体的流量更为均匀,从而提高热管理部件300的均流性,提高热管理部件300的换热效果,提高电池单体10的循环性能,提高电池100的可靠性。
在第一些实施例中,第一方向Y可以垂直于第二方向X。
下面对第二组流道6的横截面积之和大于第一组流道5的横截面积之和的具体实现方式进行详细阐述。
参照图4和图5,在一些实施例中,第一分流道5a的数量为一个,第二分流道6a的数量为一个,第二分流道6a的横截面积大于第一分流道5a的横截面积。
可理解地,本实施例中,第一分流道5a的横截面积即第一组流道5的横截面积之和,第二分流道6a的横截面积即第二组流道6的横截面积之和。
在第一分流道5a的深度和第二分流道6a的深度相等的情况下,可以控制第二分流道6a的宽度大于第一分流道5a的宽度,从而实现第二组流道6的横截面积之和大于第一组流道5的横截面积之和。其中,第一流道的深度是第一流道在热管理部件300厚度方向的深度,热管理部件300的厚度方向为垂直于第一方向Y和第二方向X形成的平面的方向。
当然,在第一分流道5a的宽度和第二分流道6a的宽度相等的情况下,可以控制第二分流道6a的深度大于第一分流道5a的深度,从而实现第二组流道6的横截面积之和大于第一组流道5的横截面积之和。
本实施例中,一个第一分流道5a将液体导入第一主流道1,一个第二分流道6a将液体导入第二主流道2,通过第二分流道6a的横截面积大于第一分流道5a的横截面积从而实现第二组流道6的横截面积之和大于第一分流道5a的横截面积之和,第二分流道6a的数量少,能够降低热管理部件300的制备难度。
参照图6,在一些实施例中,在第一分流道5a的数量为一个,第二分流道6a的数量为一个的情况下,沿第一方向Y,第一分流道5a的宽度为W1,第二分流道6a的宽度为W2,满足,10mm≤W1≤20mm。
10mm≤W1,第一分流道5a不会太窄,能够缓解第一分流道5a内液体的压降;W1≤20mm,第一分流道5a不会太宽,这样第一分流道5a内液体流量不会太大,有利于提高热管理部件300的均流性;因此,10mm≤W1≤20mm,能够兼顾热管理部件300的压降与均流性。
示例性地,W1可以为10mm、12mm、14mm、16mm、17mm、19mm、20mm以及这之间的任意数值。
参照图6,在一些实施例中,满足,15mm≤W2≤25mm。
15mm≤W2,第二分流道6a不会太窄,能够缓解第二分流道6a内液体的压降且第二分流道6a内具有较大的液体流量;W2≤25mm,第二分流道6a不会太大,能够获得体积较小的热管理部件300,因此,15mm≤W2≤25mm,能够兼顾热管理部件300的压降与体积。
示例性地,W2可以为15mm、17mm、19mm、22mm、23mm、24mm、25mm以及这之间的任意数值。
参照图7和图8,参照图7和图8,图7为本申请另一些实施例的热管理部件300的内部结构示意图;图8为图7所示热管理部件300中液体流动方向示意图。在另一些实施例中,第一分流道5a的数量为多个,多个第一分流道5a沿第一方向Y间隔设置。第二分流道6a的数量为多个,多个第二分流道6a沿第一方向Y间隔设置,所有第二分流道6a的横截面积之和大于所有第一分流道5a的横截面积之和。
即,第一分流道5a和第二分流道6a均为多个。其中,第一分流道5a的数量可以为两个、三个、四个等。第二分流道6a的数量可以为两个、三个、四个等。需要说明的是,第一分流道5a的数量与第二分流道6a的数量可以相同或者不同,示例性的,在图7和图8中,第一分流道5a的数量与第二分流道6a的数量均为两个。
多个第一分流道5a的面积相加可以得到为第一组分流道的横截面积之和。多个第二分流道6a的面积相加可以得到为第二组分流道的横截面积之和。
本实施例中,通过多个第一分流道5a将液体导入第一主流道1,通过多个第二分流道6a将液体导入第二主流道2,第一分流道5a和第二分流道6a的数量均为多个,便于在不同位置根据需要布置第一分流道5a和第二分流道6a,以提高热管理部件300的均流性,且降低热管理部件300的制备难度。
在又一些实施例中,第一分流道5a的数量为多个,多个第一分流道5a沿第一方向Y间隔设置,第二分流道6a的数量为一个,第二分流道6a的横截面积大于所有第一分流道5a的横截面积之和。
其中,多个第一分流道5a的宽度可以相同或者不相同,多个第二分流道6a的宽度可以相同或者不相同。
本实施例中,通过多个第一分流道5a将液体导入第一主流道1,通过一个第二分流道6a将液体导入第二主流道2,从而提高热管理部件300的均流性。
再一些实施例中,第一分流道5a的数量为一个,第二分流道6a的数量为多个,多个第二分流道6a沿第一方向Y间隔设置,所有第二分流道6a的横截面积之和大于第一分流道5a的横截面积。
本实施例中,通过一个第一分流道5a将液体导入第一主流道1,通过多个第二分流道6a将液体导入第二主流道2,从而提高热管理部件300的均流性。
上述实施例示意了一些第二组流道6的横截面积之和大于第一组流道5的横截面积之和的具体实现方式。
参照图4和图5,在一些实施例中,热管理部件300还具有进液口310,进液口310设置于进液流道330的一端。
由于第二组流道6位于第一组流道5的上游,因此,相比第二组流道6,第一组流道5会更靠近进液口310。
示例性地,如图4和图5所示,进液口310设置于进液流道330的上方,第一主流道1设置于第二主流道2的上方。
参照图9和图10,图9为本申请又一些实施例的热管理部件300的内部结构示意图;图10为图9所示热管理部件300中液体流动方向示意图。在一些实施例中,热管理部件300还具有第一连通流道7,沿第一方向Y,第一连通流道7设置于第一流入端和第二流入端2c之间,且分别与第一流入端和第二流入端2c连通。
示例性地,如图9和图10所示,沿第一方向Y,第一连通流道7位于第一主流道1与第二主流道2之间,第一连通流道7沿第一方向Y延伸。
本实施例中,第一连通流道7分别与第一流入端和第二流入端2c连通,除了第二组流道6外,液体还可以经过第一连通流道7进入第二主流道2。这样,能够降低流阻,缓解液体的压降,提高热管理中液体的流量,从而提高热管理部件300的换热效果。
图11为本申请再一些实施例的热管理部件300的内部结构示意图;图12为图11所示热管理部件300中液体流动方向示意图。
参照图11和图12,在一些实施例中,热管理部件300还具有第三组流道350,第三组流道350包括至少一个第三分流道350a,第一连通流道7通过第三组流道350与进液流道330连通;沿第二方向X,第三组流道350的投影落入第一连通流道7的投影内。
可理解地,第三组流道350将第一连通流道7与进液流道330连通,第三组流道350能够将液体导入第一连通流道7。即,不仅第一组流道5和第二组流道6能够进液流道330进行分流,第三组流道350也能够对进液流道330分流。
其中,第三分流道350a的数量可以是一个也可以是多个。
示例性地,如图11和图12所示,第三分流道350a的数量为1个,第三分流道350a沿第二方向X延伸。加入第三组流道350后,第一连通流道7中的液体可以部分进入第一主流道1,部分进入第二主流道2。
本实施例中,第一连通流道7通过第三组流道350与进液流道330连通,第三分流道350a能够将液体导入第一连通流道7,能够进一步降低流阻,缓解液体的压降,提高热管理中液体的总流量,从而提高热管理部件300的换热效果。
为了方便流道的布置,在一些实施例中,第一组流道5、第二组流道6和第三组流道350相互平行,且均沿第二方向X延伸。
在一些实施例中,第三组流道350的横截面积之和大于第一组流道5的横截面积之和,第三组流道350的横截面积之和小于第二组流道6的横截面积之和。
若第三分流道350a为一个,则第三分流道350a的横截面积即第三组流道350的横截面积之和。若第三分流道350a为多个,则多个第三分流道350a的横截面积相加即得到第三组流道350的横截面积之和。示例性地,在图11和图12中,第三分流道350a的数量为一个。
第三分流道350a的横截面积的测量可以采用与第一分流道5a和第二分流道6a相同的测量方法,为了描述简洁,此处不再赘述。
可理解地,第一流道组的横截面积、第三流道组的横截面积和第二流道组的横截面积依次增大。这样,沿进液流道中的液体的流动方向S1,液体受到的阻力依次降低,有利于提升热管理部件300中液体的总流量,从而提高热管理部件300的换热效果。
参照图4和图5,在一些实施例中,沿进液流道中的液体流动方向S1,进液流道330包括位于第一组流道5的上游的第一上游段330a和位于第一组流道5的下游的第一下游段330b,第二组流道6连接于第一下游段330b,第一下游段330b的横截面积大于第一组流道5的横截面积之和。
其中,第一上游段330a与第一下游段330b可以沿第一方向Y排布成一条平直的进液流道330。第一上游段330a与第一下游段330b也可以呈角度设置(如图11和图12所示)。
本实施例中,第一下游段330b的横截面积大于第一组流道5的横截面积之和,这样,能够缓解第一下游段330b中液体的压降,并且,相比第一组流道5,液体更容易进入第一下游段330b,从而通过第二组流道6流入第二主流道2,进一步提高热管理部件300的均流性。
参照图6,在一些实施例中,第一下游段330b的宽度为W3,满足,15mm≤W3≤25mm。
15mm≤W3,第一下游段330b不会太窄,能够缓解第一下游段330b内的液体的压降,W3≤25mm,第一下游段330b不会太宽,能够减小第一下游段330b的宽度,从而获得体积较小的热管理部件300。因此,15mm≤W3≤25mm,能够兼顾热管理部件300的压降与体积。
示例性地,W3可以为15mm、16mm、17mm、19mm、20mm、22mm、24mm、25mm以及这之间的任意数值。
在一些实施例中,进液口310设置于第一上游段330a远离第一下游段330b的一端。
在一些实施例中,第一上游段330a的横截面积大于第一下游段330b的横截面积,第一下游段330b的横截面积大于第一组流道5的横截面积之和。这样,第一上游段330a的横截面积较大,能够缓解靠近进液口310位置的液体的压降,从而提高热管理部件300中液体的总流量,提高热管理部件300的换热效果。
在一些实施中,第一下游段330b沿第一方向Y延伸。
其中,第一下游段330b可以直线延伸,第一下游段330b也可以曲线延伸。
第一下游段330b沿第一方向Y延伸,第一主流道1和第二主流道2的排布方向与第一下游段330b的延伸方向相同,这样,允许第一下游段330b、第一主流道1和第二主流道2能够布局得更紧凑,从而减小热管理部件300的体积,提高使用该热管理部件300的电池100的能量密度。
在一些实施例中,第一上游段330a相对第一下游段330b倾斜设置。
可理解地,第一上游段330a和第一下游段330b呈夹角设置。示例性地,如图4和图5所示,第一上游段330a和第一下游段330b呈钝角设置。
本实施例中,第一上游段330a相对第一下游段330b倾斜设置以使第一上游段330a和第一下游段330b呈夹角设置,这样,在第一上游段330a的长度和第一下游段330b的长度一定的情况下,进液流道330整体在第一方向Y和第二方向X上占用尺寸较小,从而获得体积较小的热管理部件300,提高使用该热管理部件300的电池100的能量密度。
参照图4和图5,在一些实施例中,第一主流道1具有沿第一方向Y相对的第一壁1a和第二壁1b,第一流入端设置有第一扰流件410。沿第一方向Y,第一扰流件410与第一壁1a间隔设置,第一扰流件410与第二壁1b间隔设置;沿第二方向X,第一扰流件410与第一组流道5间隔设置。
在热管理部件300由第一板体和第二板体分体制备,第二板体覆盖第板体冲压的凹槽形成流道的情况下,第一壁1a和第二壁1b为第一主流道1对应区域的凹槽的两个槽壁,第一扰流件410与凹槽的两个槽壁均间隙设置。
为了方便描述,后文称第一壁1a和第二壁1b为第一主流道1的边缘,沿第一方向Y,第一壁1a和第二壁1b中间的位置为第一主流道1的中部。液体在第一主流道1中流动时,第一壁1a和第二壁1b会液体流动造成阻力,这会导致第一主流道1的边缘流速低,流量低,第一主流道1的中部与第一流道的边缘存在流速差,第一主流道1中的液体流速不均,影响热管理部件300的均流性。
本实施例中,第一扰流件410能够对第一流入端的液体进行分流,以使液体能够先往第一壁1a和第二壁1b的位置流动,以缓解第一壁1a和第二壁1b对液体的阻力而引起的第一主流道1中液体流速不均的问题。
上述实施例,通过第一扰流件410改善第一主流道1流速不均的问题。除了第一主流道1外,同理地,第二主流道2也存在流速不均的问题。为了改善第二主流道2流速不均的问题,在一些实施例中,继续参照图4和图5,第二主流道2具有沿第一方向Y相对的第三壁2a和第四壁2b,第二流入端2c设置有第二扰流件420。沿第一方向Y,第二扰流件420与第三壁2a间隔设置,第二扰流件420与第四壁2b间隔设置。沿第二方向X,第二扰流件420与第二组流道6间隔设置。
其中,第二扰流件420与第一扰流件410作用相同,为了简洁,在此不再赘述。
本实施例中,第二扰流件420能够对第二流入端2c的液体进行分流,以使液体能够先往第三壁2a和第四壁2b的位置流动,以缓解第三壁2a和第四壁2b对液体的阻力而引起的第二主流道2中液体流速不均的问题。
为了进一步改善热管理部件300的均流性,在一些实施例中,继续参照图4和图5,热管理部件300还具有出液流道340、第四组流道360、第五组流道370、第三主流道3和第四主流道4。
第三主流道3和第四主流道4沿第一方向Y并排间隔设置。在第二方向X上,第三主流道3具有第三流出端3c,第四主流道4具有第四流出端4c。
第四组流道360包括至少一个第四分流道360a,第三流出端3c通过第四组流道360与出液流道340连通。第五组流道370包括至少一个第五分流道370a,第四流出端4c通过第五组流道370与出液流道340连通。沿第二方向X,第四组流道360的投影落入第三流出端3c的投影内,第五组流道370的投影落入第四流出端4c的投影内。
其中,沿出液流道中的液体流动方向S2,第四组流道360位于第五组流道370的上游,第四组流道360的横截面积之和大于第五组流道370的横截面积之和。
如图4和图5所示,沿第二方向X,第三主流道3具有相对的第三流入端3d和第三流出端3c,液体从第三流入端3d进入第三主流道3,并从第三流出端3c流出第三主流道3。同理,沿第二方向X,第四主流道4具有相对的第四流入端4d和第四流出端4c,液体从第四流入端4d进入第四主流道4,并从第四流出端4c流出第四主流道4。
第三流出端3c通过第四组流道360与出液流道340连通,可理解地,第四组流道360位于第三流出端3c与出液流道340之间,第四组流道360将第三流出端3c与出液流道340导通,第三主流道3中的液体经过第四组流道360,再进入出液流道340。可以理解的是,第四组流道360的横截面积会影响第三主流道3中液体流量的大小,第三主流道3中液体的流量与第四组流道360的尺寸相关。
第四流出端4c通过第五组流道370与出液流道340连通,可理解地,第五组流道370位于第四流出端4c与出液流道340之间,第五组流道370将第四流出端4c与出液流道340导通,第四主流道4中的液体经过第五组流道370,再进入出液流道340。可以理解的是,第五组流道370的横截面积会影响第四主流道4中液体流量的大小,第四主流道4中液体的流量与第五组流道370的尺寸相关。
第四组流道360包括至少一个第四分流道360a,可理解地,第四分流道360a可以是一个也可以是多个。若第四分流道360a为一个(如图4和图5所示所示),则第四分流道360a的横截面积即为第四组流道360的横截面积之和;若第四分流道360a为多个(如图7和图8所示),多个第四分流道360a的横截面积相加即得到第一组流道5的横截面积之和。
第五组流道370包括至少一个第五分流道370a,可理解地,第五分流道370a可以是一个也可以是多个。若第五分流道370a为一个(如图4和图5所示),则第五分流道370a的横截面积即为第五组流道370的横截面积之和;若第五分流道370a为多个(如图7和图8所示),多个第五分流道370a的横截面积相加即得到第五组流道370的横截面积之和。
第四组流道360的横截面积之和大于第五组流道370的横截面积之和,即所有的第四分流道360a的横截面积相加的总和大于所有的第五分流道370a的横截面积相加的总和。
需要说明的是,根据具体的设置需要,第三主流道3、第四主流道4与第一主流道1、第二主流道2的相对位置不同,出液流道340和进液流道330的相对位置也会不同。因此,出液流道中的液体流动方向S2与进液流道中的液体流道方向S1可以相同,出液流道中的液体流动方向S2与进液流道中的液体流道方向S1也可以不同。示例性地,如图4和图5所示,出液流道340和进液流道330布置在热管理部件300第二方向X的同一侧,出液流道中的液体流动方向S2与进液流道中的液体流道方向S1相同。
第四分流道360a和第五分流道370a的横截面积的测量可以采用与第一分流道5a和第二分流道6a的横截面相同的测量方法,为了简洁,此处不再赘述。
由于第四组流道360位于第五组流道370的上游,第三主流道3位于第四主流道4的上游。通常,第三主流道3与第四主流道4之间也存在流量不均的问题,第三主流道3中液体的流量会大于第四主流道4中液体的流量。因此,需要均衡第三主流道3与第四主流道4中液体的流量。
本实施例中,第四组流道360将第三流道与出液流道340连通,第四组流道360能够将液体导出第三主流道3,第五组流道370将第四主流道4与出液流道340连通,第五组流道370能够将液体导出第四主流道4。第五组流道370位于第四组流道360的下游,第五组流道370的横截面积之和大于第四组流道360的横截面积之和,这样,能够提升从第四主流道4流出的液体的流量,降低第三主流道3中液体的流量与第四主流道4中液体的流量的差值,使得分配到第三主流道3和第四主流道4中液体的流量更为均匀,从而进一步提高热管理部件300的均流性,提高热管理部件300的换热效果,提高电池单体10的循环性能,提高电池100的可靠性。
参照图4和图5,在一些实施例中,第一主流道1、第二主流道2、第三主流道3和第四主流道4沿第一方向Y依次设置。
示例性地,第一主流道1、第二主流道2、第三主流道3和第四主流道4均沿第二方向X直线延伸,且延伸长度相等,第一主流道1、第二主流道2、第三主流道3和第四主流道4沿第一依次排布。
本实施例中,第一主流道1、第二主流道2、第三主流道3和第四主流道4沿第一方向Y依次设置,这样能够减小流道在第二方向X的尺寸占用,允许流道布局的更紧凑,从而获得体积较小的热管理部件300,提高使用该热管理部件的电池的能量密度。
参照他4和图5,在一些实施例中,在第二方向X上,第一主流道1具有与第一流入端相对的第一流出端1d,第二主流道2具有与第二流入端2c相对的第二流出端2d,第三主流道3具有与第三流出端3c相对的第三流入端3d,第四主流道4具有与第四流出端4c相对的第四流入端4d;热管理部件300还具有第二连通流道8,第二连通流道8连通第一流出端1d、第二流出端2d、第三流入端3d和第四流入端4d。
可理解地,第一主流道1的一端连通第二连通流道8,第一主流道1的另一端通过第一组流道5连通进液流道330。第二主流道2的一端连通第二连通流道8,第二主流道2的另一端通过第二组流道6连通进液流道330。第三主流道3的一端连通第二连通流道8,第三主流道3的另一端通过第四组流道360连通出液流道340;第四主流道4的一端连通第二连通流道8,第四主流道4的另一端通过第五组流道370连通出液流道340。
本实施例中,第一流出端1d、第二流出端2d、第三流入端3d和第四流入端4d分别与第二连通流道8连通,从而第二连通流道8能够汇聚第一主流道1和第二主流道2流出的液体,并将液体分流至第三主流道3和第四主流道4,从而均衡第一主流道1、第二主流道2、第三主流道3和第四主流道4中液体的流量,从而进一步提高热管理部件300的均流性,提高热管理部件300的换热效果,提高电池单体10的循环性能,提高电池100的可靠性。
在一些实施例中,第二连通流道8沿第一方延伸。
在一些实施例中,热管理部件300具有出液口320,出液口320设置于出液流道340的一端。
应理解,第五组流道370在第四组流道360的下游,出液口320在第五组流道370的下游。
参照图9和图10,在一些实施例中,热管理部件300还具有第三连通流道9,沿第一方向Y,第三连通流道9设置于第三流出端3c和第四流出端4c之间,且分别与第三流出端3c和第四流出端4c连通。
示例性地,如图9和图10所示,第三连通流道9位于第三主流道3和第四主流道4之间,第三连通流道9沿第一方向Y直线延伸。
本实施例中,第三连通流道9分别与第三流出端3c和第四流出端4c连通,可以理解的是,除第四组流道360外,第三连通流道9也能够将第三主流道3中的液体导出,这样,能够进一步降低流阻,缓解液体的压降,提高热管理中液体的总流量,从而提高热管理部件300的换热效果。
参照图10和图11,在一些实施例中,热管理部件300还具有第六组流道380,第六组流道380包括至少一个第六分流道380a,第三连通流道9通过第六组流道380与出液流道340连通;沿第二方向X,第六组流道380的投影落入第三连通流道9的投影内。
可理解地,第六组流道380将第三连通流道9与出液流道340连通,第六组流道380能够将液体从第三连通流道9导出。加入第六组流道380后,第三主流道3中的液体可以部分进入第六组流道380,第四主流道4中的液体也可以部分进入第六组流道380。
其中,第六分流道380a可以是一个也可以是多个。示例性地,在图11和图12中,第六分流道380a的数量为一个。
示例性地,如图11和图12所示,第六分流道380a的数量为一个,第六组流道380沿第二方向X延伸,第二组流道6、第四组流道360和第五组流道370相互平行。
本实施例中,第三连通流道9通过第六组流道380与出液流道340连通,第六组流道380能够将液体从第三连通流道9导出,能够进一步降低流阻,缓解液体的压降,提高热管理中液体的总流量,从而提高热管理部件300的换热效果。此外,还能缓解因第三主流道3的液体流量大、流速过快导致液体倒灌进第四主流道4引起逆流、乱流现象的发生。
其中,倒灌是指第三主流道3中的液体从第三流出端3c流出后由于无法及时排出而经第四流出端4c进入第四主流道4的现象。
在一些实施例中,所述第六组流道380的横截面积之和大于第四组流道360的横截面积之和,第六组流道380的横截面积之和小于第五组流道370的横截面积之和。
若第六分流道380a为一个,则第六分流道380a的横截面积即第六组流道380的横截面积之和。若第六分流道380a为多个,则多个第六分流道380a的横截面积相加即得到第六组流道380的横截面积之和。
第六分流道380a的横截面积的测量可以采用与第一分流道5a和第二分流道6a相同的测量方法,为了描述简洁,此处不再赘述。
本实施例中,第四流道组的横截面积、第六流道组的横截面积和第五流道组的横截面积依次增大,这样,沿出液流道中的液体流动方向S2,液体受到的阻力依次降低,有利于在提升热管理部件300中液体的流量,有利于提高热管理部件300的均流性,从而提高热管理部件300的换热效果。
参照图4,在一些实施例中,沿出液流道中的液体流动方向S2,出液流道340包括位于第五组流道370的上游的第二上游段340a和位于第五组流道370的下游的第二下游段340b,第四组流道360连接于第二上游段340a,第二上游段340a的横截面积大于第四组流道360的横截面积之和。
可理解地,第二上游段340a的横截面积大于第四组流道360的横截面积之和,第二上游段340a较大,液体在第二上游段340a压力较少。
其中,第二上游段340a和第二下游段340b的设置形式可以是多种多样的,例如,第二上游段340a和第二下游段340b可以沿第一方向Y排布形成平直的出液流道340;又如,第二上游段340a和第二下游段340b呈角度设置,此时第二上游段340a和第二下游段340b呈折现排布,第二上游段340a中的液体需要经过拐角进入第二下游段340b,拐角是指第二上游段340a和第二下游段340b之间转弯的位置。示例性地,如图4和图5所示,第二上游段340a和第二下游段340b呈钝角设置,这样可以降低转弯处对液体的阻力。
本实施例中,第二下游段340b的横截面积大于第四组流道360的横截面积之和,这样,相比第四组流道360中的液体,第二上游段340a中液体受到的压力更小,第二上游段340a能够缓解压降,从而得到总体压降更小的热管理部件300,有利于提高热管理部件300的换热效果。
在一些实施例中,第二下游段340b的横截面积大于第二上游段340a的横截面积,第二上游段340a的横截面积大于第四组流道360的横截面积之和。进一步缓解热管理部件300的压降。
在一些实施例中,出液口320设置于第二下游段340b,第二下游段340b的一端连通第二上游段340a,第二下游段340b的另一端连通出液口320。
参照图4和图5,在一些实施例中,第三主流道3具有沿第一方向Y相对的第五壁3a和第六壁3b,第三流出端3c设置有第三扰流件430;沿第一方向Y,第三扰流件430与第五壁3a间隔设置,第三扰流件430与第六壁3b间隔设置;沿第二方向X,第三扰流件430与第四组流道360间隔设置。
在热管理部件300由第一板体和第二板体分体制备,第二板体覆盖第板体冲压的凹槽形成流道的情况下,第五壁3a和第六壁3b为第三主流道3对应区域的凹槽的两个槽壁,第三扰流件430与凹槽的两个槽壁均间隙设置。
为了方便描述,后文称第五壁3a和第六壁3b为第三主流道3的边缘,沿第一方向Y,第五壁3a和第六壁3b中间的位置为第三主流道3的中部。液体在第三主流道3中流动时,第五壁3a和第六壁3b会液体流动造成阻力,这会导致第三主流道3的边缘流速低,流量低,第三主流道3的中部与第三流道的边缘存在流速差,第三主流道3中的液体流速不均,影响热管理部件300的均流性。因此,第三主流道3边缘的液体流速需要提高。
本实施例中,第三扰流件430能够对第三流出端3c的液体进行分流,以使液体能够先往第五壁3a和第六壁3b的位置流动从而流出第三主流道3,以缓解第五壁3a和第六壁3b对液体的阻力而引起的第三主流道3中液体流速不均的问题。
同样地,第四主流道4也存在流速不均的问题,为了改善第四主流道4流速不均的问题,在一些实施例中,参照图4和图5,第四主流道4具有沿第一方向Y相对的第七壁4a和第八壁4b,第四流出端4c设置有第四扰流件440;沿第一方向Y,第四扰流件440与第七壁4a间隔设置,第四扰流件440与第八壁4b间隔设置;沿第二方向X,第四扰流件440与第五组流道370间隔设置。
其中,第四扰流件440与第三扰流件430作用相同,为了简洁,在此不再赘述。
本实施例中,第四扰流件440能够对第四流出端4c的液体进行分流,以使液体能够先往第七壁4a和第八壁4b位置流动从而流出第四主流道4,以缓解第七壁4a和第八壁4b对液体的阻力而引起的第四主流道4中液体流速不均的问题。
本申请实施例还提供一种电池100,电池100包括上述任一实施例提供的热管理部件300。
本申请实施例还提供一种用电设备,用电设备包括上述任一实施例提供的电池100,电池100用于为用电设备供电。
本申请实施例还提供一种热管理部件300,热管理部件300具有进液口310、出液口320、进液流道330、出液流道340、第一主流道1、第二主流道2、第三主流道3、第四主流道4、第一组流道5、第二组流道6、第三组流道350、第四组流道360、第五组流道370、第六组流道380、第一连通流道7、第二连通流道8和第三连通流道9。
第一主流道1、第二主流道2、第三主流道3和第四主流道4沿第一方向Y并排间隔设置。
在第二方向X上,第一主流道1具有相对的第一流入端和第一流出端1d,第二主流道2具有相对的第二流入端2c和第二流出端2d,第三主流道3具有相对的第三流入端3d和第三流出端3c,第四主流道4具有相对的第四流入端4d和第四流出端4c,第二方向X与第一方向Y垂直。第二连通流道8连通第一流出端1d、第二流出端2d、第三流入端3d和第四流入端4d。
第一组流道5包括至少一个第一分流道5a,第一流入端通过第一组流道5与进液流道330连通。第二组流道6包括至少一个第二分流道6a,第二流入端2c通过第二组流道6与进液流道330连通。沿第二方向X,第一组流道5的投影落入第一流入端的投影内,第二组流道6的投影落入第二流入端2c的投影内。第一连通流道7设置于第一流入端和第二流入端2c之间,且分别与第一流入端和第二流入端2c连通。第三组流道350包括至少一个第三分流道350a,第一连通流道7通过第三组流道350与进液流道330连通;沿第二方向X,第三组流道350的投影落入第一连通流道7的投影内。其中,沿进液流道中的液体流动方向S1,第二组流道6位于第一组流道5的下游,第三组流道350位于第一组流道5和第二组流道6之间,第三组流道350的横截面积之和大于第一组流道5的横截面积之和,第三组流道350的横截面积之和小于第二组流道6的横截面积之和。
第四组流道360包括至少一个第四分流道360a,第三流出端3c通过第四组流道360与出液流道340连通。第五组流道370包括至少一个第五分流道370a,第四流出端4c通过第五组流道370与出液流道340连通。沿第二方向X,第四组流道360的投影落入第三流出端3c的投影内,第五组流道370的投影落入第四流出端4c的投影内。第六组流道380包括至少一个第六分流道380a,第三连通流道9通过第六组流道380与出液流道340连通;沿第二方向X,第六组流道380的投影落入第三连通流道9的投影内。其中,沿出液流道中的液体流动方向S2,第四组流道360位于第五组流道370的上游,第六组流道380位于第四组流道360与第五组流道370之间,第六组流道380的横截面积之和大于第五组流道370的横截面积之和,第六组流道380的横截面积之和小于第五组流道370的横截面积之和。
进液段包括第一上游段330a和第一下游段330b,沿进液流道中的液体流动方向S1,第一上游段330a位于进液流道330包括位于第一组流道5的上游,第一下游段330b位于第一组流道5的下游第一下游段330b,第二组流道6连接于第一下游段330b,第一下游段330b的横截面积大于第一组流道5的横截面积之和。第一上游段330a和第一下游段330b呈钝角设置。
沿出液流道中的液体流动方向S2,出液流道340包括第二上游段340a和第二下游段340b,第二上游段340a位于第五组流道370的上游和第二下游段340b位于第五组流道370的下游,第四组流道360连接于第二上游段340a,第二上游段340a的横截面积大于第四组流道360的横截面积之和。第二上游段340a和第二下游段340b呈钝角设置。
进液口310设置于第一上游段330a远离第一下游段330b的一端,出液口320设置于第二下游段340b远离第二上游段340a的一端。
第一主流道1具有沿第一方向Y相对的第一壁1a和第二壁1b,第一流入端设置有第一扰流件410;沿第一方向Y,第一扰流件410与第一壁1a间隔设置,第一扰流件410与第二壁1b间隔设置;沿第二方向X,第一扰流件410与第一组流道5间隔设置。
第二主流道2具有沿第一方向Y相对的第三壁2a和第四壁2b,第二流入端2c设置有第二扰流件420。沿第一方向Y,第二扰流件420与第三壁2a间隔设置,第二扰流件420与第四壁2b间隔设置。沿第二方向X,第二扰流件420与第二组流道6间隔设置。
第三主流道3具有沿第一方向Y相对的第五壁3a和第六壁3b,第三流出端3c设置有第三扰流件430;沿第一方向Y,第三扰流件430与第五壁3a间隔设置,第三扰流件430与第六壁3b间隔设置;沿第二方向X,第三扰流件430与第四组流道360间隔设置。
第四主流道4具有沿第一方向Y相对的第七壁4a和第八壁4b,第四流入端4d设置有第四扰流件440;沿第一方向Y,第四扰流件440与第七壁4a间隔设置,第四扰流件440与第八壁4b间隔设置;沿第二方向X,第四扰流件440与第五组流道370间隔设置。
参照图4,第一主流道1、第二主流道2、第三主流道3、第四主流道4和第二连通流道8中还设置有多个第五扰流件450,多个第五扰流件450沿液体的流动方向依次排布,以提高提高热管理部件300的均流性。
本实施例中,第三组流道350的横截面积之和大于第一组流道5的横截面积之和,第三组流道350的横截面积之和小于第二组流道6的横截面积之和,能够均衡第一主流道1和第二主流道2的流量且缓解靠近进液流道330位置的压降,从而提高热管理部件300的均流性和可靠性。第六组流道380的横截面积之和大于第四组流道360的横截面积之和。第六组流道380的横截面积之和小于第五组流道370的横截面积之和,能够均衡第三主流道3和第四主流道4的流量且缓解靠近出液流道340位置的压降,从而提高热管理部件300的均流性和可靠性。第一扰流件410能够均衡第一主流道1的边缘和中部的流速,第二扰流件420能够均衡第二主流道2的边缘和中部的流速,第三扰流件430能够均衡第三主流道3的边缘和中部的流速,第四扰流件440能够均衡第四主流道4的边缘和中部的流速,进一步提高热管理部件300的均流性和可靠性。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
以上实施例仅用以说明本申请的技术方案,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (28)

  1. 一种热管理部件,其特征在于,所述热管理部件具有进液流道、第一组流道、第二组流道、第一主流道和第二主流道;
    所述第一主流道和所述第二主流道沿第一方向并排间隔设置;
    在第二方向上,所述第一主流道具有第一流入端,所述第二主流道具有第二流入端,所述第二方向与所述第一方向相交;
    所述第一组流道包括至少一个第一分流道,所述第一流入端通过所述第一组流道与所述进液流道连通;
    所述第二组流道包括至少一个第二分流道,所述第二流入端通过所述第二组流道与所述进液流道连通;
    沿所述第二方向,所述第一组流道的投影落入所述第一流入端的投影内,所述第二组流道的投影落入所述第二流入端的投影内;
    其中,沿所述进液流道中的液体流动方向,所述第二组流道位于所述第一组流道的下游,所述第二组流道的横截面积之和大于所述第一组流道的横截面积之和。
  2. 根据权利要求1所述的热管理部件,其特征在于,所述第一分流道的数量为一个,所述第二分流道的数量为一个,所述第二分流道的横截面积大于所述第一分流道的横截面积。
  3. 根据权利要求2所述的热管理部件,其特征在于,沿所述第一方向,所述第一分流道的宽度为W1,所述第二分流道的宽度为W2,满足,10mm≤W1≤20mm,15mm≤W2≤25mm。
  4. 根据权利要求1所述的热管理部件,其特征在于,所述第一分流道的数量为多个,多个所述第一分流道沿所述第一方向间隔设置,所述第二分流道的数量为一个,所述第二分流道的横截面积大于所有所述第一分流道的横截面积之和。
  5. 根据权利要求1所述的热管理部件,其特征在于,所述第一分流道的数量为一个,所述第二分流道的数量为多个,多个所述第二分流道沿所述第一方向间隔设置,所有所述第二分流道的横截面积之和大于所述第一分流道的横截面积。
  6. 根据权利要求1所述的热管理部件,其特征在于,所述第一分流道的数量为多个,多个所述第一分流道沿所述第一方向间隔设置;所述第二分流道的数量为多个,多个所述第二分流道沿所述第一方向间隔设置,所有所述第二分流道的横截面积之和大于所有所述第一分流道的横截面积之和。
  7. 根据权利要求1-6任一项所述的热管理部件,其特征在于,所述热管理部件还具有进液口,所述进液口设置于所述进液流道的一端。
  8. 根据权利要求1-7任一项所述的热管理部件,其特征在于,所述热管理部件还具有第一连通流道,沿所述第一方向,所述第一连通流道设置于所述第一流入端和所述第二流入端之间,且分别与所述第一流入端和所述第二流入端连通。
  9. 根据权利要求8所述的热管理部件,其特征在于,所述热管理部件还具有第三组流道,所述第三组流道包括至少一个第三分流道,所述第一连通流道通过所述第三组流道与所述进液流道连通;
    沿所述第二方向,所述第三组流道的投影落入所述第一连通流道的投影内。
  10. 根据权利要求9所述的热管理部件,其特征在于,所述第三组流道的横截面积之和大于所述第一组流道的横截面积之和,所述第三组流道的横截面积之和小于所述第二组流道的横截面积之和。
  11. 根据权利要求1-10任一项所述的热管理部件,其特征在于,沿所述进液流道中的液体流动方向,所述进液流道包括位于所述第一组流道的上游的第一上游段和位于所述第一组流道的下游的第一下游段,所述第二组流道连接于所述第一下游段,所述第一下游段的横截面积大于所述第一组流道的横截面积之和。
  12. 根据权利要求11所述的热管理部件,其特征在于,所述第一下游段的宽度为W3,满足,15mm≤W3≤25mm。
  13. 根据权利要求11或12所述的热管理部件,其特征在于,所述第一下游段沿所述第一方向延伸。
  14. 根据权利要求11-13任一项所述的热管理部件,其特征在于,所述第一上游段相对所述第一下游段倾斜设置。
  15. 根据权利要求1-14任一项所述的热管理部件,其特征在于,所述第一主流道具有沿所述第一方向相对的第一壁和第二壁,所述第一流入端设置有第一扰流件;
    沿所述第一方向,所述第一扰流件与所述第一壁间隔设置,所述第一扰流件与所述第二壁间隔设置;
    沿所述第二方向,所述第一扰流件与所述第一组流道间隔设置。
  16. 根据权利要求1-15任一项所述的热管理部件,其特征在于,所述第二主流道具有沿所述第一方向相对的第三壁和第四壁,所述第二流入端设置有第二扰流件;
    沿所述第一方向,所述第二扰流件与所述第三壁间隔设置,所述第二扰流件与所述第四壁间隔设置;
    沿所述第二方向,所述第二扰流件与所述第二组流道间隔设置。
  17. 根据权利要求1-16任一项所述的热管理部件,其特征在于,所述热管理部件还具有出液流道、第四组流道、第五组流道、第三主流道和第四主流道;
    所述第三主流道和所述第四主流道沿所述第一方向并排间隔设置;
    在所述第二方向上,所述第三主流道具有第三流出端,所述第四主流道具有第四流出端;
    所述第四组流道包括至少一个第四分流道,所述第三流出端通过所述第四组流道与所述出液流道连通;
    所述第五组流道包括至少一个第五分流道,所述第四流出端通过所述第五组流道与所述出液流道连通;
    沿所述第二方向,所述第四组流道的投影落入所述第三流出端的投影内,所述第五组流道的投影落入所述第四流出端的投影内;
    其中,沿所述出液流道中的液体流动方向,所述第四组流道位于所述第五组流道的上游,所述第四组流道的横截面积之和大于所述第五组流道的横截面积之和。
  18. 根据权利要求17所述的热管理部件,其特征在于,所述第一主流道、所述第二主流道、所述第三主流道和所述第四主流道沿所述第一方向依次设置。
  19. 根据权利要求17或18所述的热管理部件,其特征在于,在所述第二方向上,所述第一主流道具有与所述第一流入端相对的第一流出端,所述第二主流道具有与所述第二流入端相对的第二流出端,所述第三主流道具有与所述第三流出端相对的第三流入端,所述第四主流道具有与所述第四流出端相对的第四流入端;
    所述热管理部件还具有第二连通流道,所述第二连通流道连通所述第一流出端、所述第二流出端、所述第三流入端和所述第四流入端。
  20. 根据权利要求17-19任一项所述的热管理部件,其特征在于,所述热管理部件还具有出液口,所述出液口设置于所述出液流道的一端。
  21. 根据权利要求17-20任一项所述的热管理部件,其特征在于,所述热管理部件还具有第三连通流道,沿所述第一方向,所述第三连通流道设置于所述第三流出端和所述第四流出端之间,且分别与所述第三流出端和所述第四流出端连通。
  22. 根据权利要求21所述的热管理部件,其特征在于,所述热管理部件还具有第六组流道,所述第六组流道包括至少一个第六分流道,所述第三连通流道通过所述第六组流道与所述出液流道连通;
    沿所述第二方向,所述第六组流道的投影落入所述第三连通流道的投影内。
  23. 根据权利要求22所述的热管理部件,其特征在于,所述第六组流道的横截面积之和大于所述第四组流道的横截面积之和,所述第六组流道的横截面积之和小于所述第五组流道的横截面积之和。
  24. 根据权利要求17-23任一项所述的热管理部件,其特征在于,沿所述出液流道中的液体流动方向,所述出液流道包括位于所述第五组流道的上游的第二上游段和位于所述第五组流道的下游的第二下游段,所述第四组流道连接于所述第二上游段,所述第二上游段的横截面积大于所述第四组流道的横截面积之和。
  25. 根据权利要求17-24任一项所述的热管理部件,其特征在于,所述第三主流道具有沿所述第一方向相对的第五壁和第六壁,所述第三流出端设置有第三扰流件;
    沿所述第一方向,所述第三扰流件与所述第五壁间隔设置,所述第三扰流件与所述第六壁间隔设置;
    沿所述第二方向,所述第三扰流件与所述第四组流道间隔设置。
  26. 根据权利要求17-25任一项所述的热管理部件,其特征在于,所述第四主流道具有沿所述第一方向相对的第七壁和第八壁,所述第四流出端设置有第四扰流件;
    沿所述第一方向,所述第四扰流件与所述第七壁间隔设置,所述第四扰流件与所述第八壁间隔设置;
    沿所述第二方向,所述第四扰流件与所述第五组流道间隔设置。
  27. 一种电池,其特征在于,包括权利要求1-26任一项所述的热管理部件。
  28. 一种用电设备,其特征在于,包括权利要求27所述的电池。
PCT/CN2024/133030 2024-01-30 2024-11-19 热管理部件、电池及用电设备 Pending WO2025161622A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202410130189.XA CN120413864A (zh) 2024-01-30 2024-01-30 热管理部件、电池及用电设备
CN202410130189.X 2024-01-30

Publications (1)

Publication Number Publication Date
WO2025161622A1 true WO2025161622A1 (zh) 2025-08-07

Family

ID=96519874

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/133030 Pending WO2025161622A1 (zh) 2024-01-30 2024-11-19 热管理部件、电池及用电设备

Country Status (2)

Country Link
CN (1) CN120413864A (zh)
WO (1) WO2025161622A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213026252U (zh) * 2020-08-25 2021-04-20 苏州科易新动力科技有限公司 用于电池包的液冷板
CN213988995U (zh) * 2021-01-07 2021-08-17 上海兰钧新能源科技有限公司 冷板结构及电池模组
CN219393516U (zh) * 2022-12-06 2023-07-21 中创新航科技股份有限公司 电池包
CN219959136U (zh) * 2023-04-24 2023-11-03 欣旺达动力科技股份有限公司 一种电池包
CN220021278U (zh) * 2023-05-31 2023-11-14 比亚迪股份有限公司 冷板、电池包和用电设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213026252U (zh) * 2020-08-25 2021-04-20 苏州科易新动力科技有限公司 用于电池包的液冷板
CN213988995U (zh) * 2021-01-07 2021-08-17 上海兰钧新能源科技有限公司 冷板结构及电池模组
CN219393516U (zh) * 2022-12-06 2023-07-21 中创新航科技股份有限公司 电池包
CN219959136U (zh) * 2023-04-24 2023-11-03 欣旺达动力科技股份有限公司 一种电池包
CN220021278U (zh) * 2023-05-31 2023-11-14 比亚迪股份有限公司 冷板、电池包和用电设备

Also Published As

Publication number Publication date
CN120413864A (zh) 2025-08-01

Similar Documents

Publication Publication Date Title
EP4148889B1 (en) Battery cell, fabrication method and fabrication system therefor, battery, and electric apparatus
EP4391205A1 (en) Electrode sheet, electrode assembly, battery cell, battery, and electric device
US20250055063A1 (en) Thermal management assembly, battery, and electric apparatus
EP4318769B1 (en) END CAP, BATTERY COMPONENT, BATTERY AND POWER CONSUMPTION DEVICE
CN217485575U (zh) 电池箱体、电池以及用电装置
US20240372172A1 (en) Battery and electric device
EP4579878A1 (en) Battery and electrical device
CN217768503U (zh) 电池和用电设备
CN216720070U (zh) 电池和用电设备
US20250105474A1 (en) Battery cell, battery, and electric apparatus
CN116250129A (zh) 电池单体、电池、用电设备及电池的制造方法和设备
US12212013B2 (en) Battery, electric apparatus, and method and apparatus for manufacturing battery
WO2024104020A1 (zh) 电池箱体、电池及用电装置
WO2023155555A1 (zh) 电池单体、电池和用电设备
WO2025161622A1 (zh) 热管理部件、电池及用电设备
US20230261299A1 (en) Battery and related electrical device, preparation method and preparation device
US20230369712A1 (en) End cap, battery cell, battery and power consuming device
CN115548346B (zh) 集流组件及电池
CN221614019U (zh) 电池及用电设备
CN116073015A (zh) 电池系统和用电设备
CN116457987A (zh) 电池单体及其制造方法和制造系统、电池以及用电装置
CN219066961U (zh) 电池以及用电装置
CN221766823U (zh) 箱体、电池以及用电装置
CN222581331U (zh) 电池以及用电装置
CN218632244U (zh) 下塑胶、端盖组件、电池单体、电池模组及用电设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24921644

Country of ref document: EP

Kind code of ref document: A1