WO2017101473A1 - 平面均温板及其制备方法及汽车头灯 - Google Patents

平面均温板及其制备方法及汽车头灯 Download PDF

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Publication number
WO2017101473A1
WO2017101473A1 PCT/CN2016/095322 CN2016095322W WO2017101473A1 WO 2017101473 A1 WO2017101473 A1 WO 2017101473A1 CN 2016095322 W CN2016095322 W CN 2016095322W WO 2017101473 A1 WO2017101473 A1 WO 2017101473A1
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Prior art keywords
chamber
condensation chamber
evaporation chamber
planar
led light
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PCT/CN2016/095322
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English (en)
French (fr)
Inventor
贾涛涛
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广州共铸科技股份有限公司
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Priority claimed from CN201510947019.1A external-priority patent/CN105351861A/zh
Priority claimed from CN201610532707.6A external-priority patent/CN106197104B/zh
Priority claimed from CN201620787662.2U external-priority patent/CN205824843U/zh
Application filed by 广州共铸科技股份有限公司 filed Critical 广州共铸科技股份有限公司
Priority to JP2017505090A priority Critical patent/JP6407404B2/ja
Publication of WO2017101473A1 publication Critical patent/WO2017101473A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]

Definitions

  • the invention relates to the technical field of vehicle lights, in particular to a planar temperature equalizing plate, a preparation method thereof and an automobile headlight.
  • the Vapor Chamber Due to its high thermal conductivity, high thermal conductivity, light weight, simple structure and versatility, the Vapor Chamber can transfer a large amount of heat without consuming electricity. It has been widely used in the thermal conduction of electronic components. Therefore, the heat component (such as electronic components, LED chips, etc.) is quickly guided away from heat to effectively solve the heat accumulation phenomenon of the heat generating component.
  • the existing uniform temperature plate has a small area of the heat radiating portion due to the limitation of the use space, which affects the size, heat dissipation mode and installation of the heat sink member, thereby resulting in low heat dissipation efficiency.
  • the object of the present invention is to provide a planar average temperature plate, a preparation method thereof and an automobile headlight, which solve the technical problem that the heat dissipation area existing in the prior art is small and the heat sink member is not easy to install.
  • the invention provides a planar temperature equalizing plate, comprising a hollow long plate-shaped evaporation chamber and a hollow flat plate-shaped condensation chamber; the evaporation chamber and the condensation chamber communicate with each other, and the evaporation chamber and the condensation chamber are both
  • the vacuum chamber is filled with a cooling liquid; the evaporation chamber and the inner wall of the condensation chamber are each provided with a capillary core layer.
  • the housing end of the condensation chamber is provided with a vacuum suction hole, and the vacuum suction hole is in communication with the condensation chamber, wherein: the evaporation chamber has a rectangular shape, and the condensation chamber has a right angle trapezoid, The vacuum suction hole is located on the outer surface of the oblique side of the condensation chamber of the right angle trapezoid.
  • the end of the housing of the evaporation chamber is provided with a vacuum suction hole, and the vacuum suction hole is in communication with the evaporation chamber, wherein: the evaporation chamber has a rectangular shape, and the condensation chamber has a right-angled trapezoid, The vacuum suction hole is located at the free end of the rectangular evaporation chamber in the longitudinal direction.
  • the capillary core layer has a thickness of 0.1 mm to 100 mm and a porosity ratio of 50%.
  • the invention also provides a preparation method of the planar temperature equalizing plate, characterized in that the method comprises the following steps:
  • the two plates are subjected to pressure welding or metal soldering in an atmosphere-protected environment, so that a condensation chamber and an evaporation chamber which are connected to each other are formed between the two plates, and a vacuum suction hole is reserved on the plate body;
  • a copper tube or an aluminum tube is inserted into the vacuum suction hole for welding and reduction of oxygen to form a suction and liquid injection joint;
  • the coolant is injected into the condensation chamber and the evaporation chamber from the suction injection joint and vacuumed. After vacuuming, the bending seal is squeezed and sealed and sealed to obtain a flat temperature plate.
  • the sintering temperature of the copper powder particles and the copper mesh is 800 ° C to 1050 ° C, and the sintering time is 1 h to 6 h.
  • the copper mesh and the aluminum mesh have a sintering temperature of 400 ° C to 550 ° C and a sintering time of 1 h to 6 h.
  • the copper powder particles or aluminum powder particles have a diameter of 10 micrometers to 1000 micrometers and a thickness of 0.1 mm to 100 mm.
  • the invention provides an automobile headlight, comprising an LED light source, a bulb metal cover, a heat dissipating component and the planar temperature equalizing plate;
  • the LED light source is attached on an outer surface of the evaporation chamber
  • the bulb metal cover is sleeved outside the LED light source and the planar uniform temperature plate;
  • the heat dissipating component is coupled to the bulb metal housing and is capable of cooling the condensation chamber.
  • a power distribution box is further included; the power distribution box is electrically connected to the LED light source and the heat dissipation component, respectively.
  • the LED light sources are two groups, respectively attached to the upper and lower surfaces of the evaporation chamber, and the total thickness of the LED light source and the evaporation chamber does not exceed 3 mm.
  • the heat dissipating component comprises: a base shell, a fan and a finned heat sink; one end of the base shell is connected to the bulb metal cover, the other end is provided with an air inlet, and the side wall of the base shell An air outlet is disposed, wherein: the base housing encloses a fan and a finned heat sink, and the base housing is provided with a wire interface.
  • a front end of the finned heat sink is attached to an outer surface of the condensation chamber to cool a condensation chamber of the planar temperature equalizing plate;
  • the fan is disposed at a rear end of the finned heat sink and located at the air inlet to accelerate cooling of the finned heat sink.
  • an air deflector is disposed at the air outlet.
  • planar uniform temperature plate, the LED light source, the bulb metal cover, and the finned heat sink are all connected by a high-temperature solder joint of tin-silver-copper environmental protection solder paste.
  • the invention enlarges the installation area and the heat dissipation area, can utilize the space more effectively; shortens the circulation process of the coolant, expands the contact surface connection, thereby improving the heat dissipation efficiency and the heat dissipation effect is better.
  • FIG. 1 is a cross-sectional view of a planar temperature equalizing plate according to an embodiment of the present invention
  • Figure 2 is a partial enlarged view of the portion A in Figure 1;
  • FIG. 3 is a schematic view showing a second modified structure of a planar temperature equalizing plate according to an embodiment of the present invention.
  • FIG. 4 is a schematic view showing a third modified structure of a planar temperature equalizing plate according to an embodiment of the present invention.
  • FIG. 5 is an assembled view of a car headlight according to an embodiment of the present invention.
  • Figure 6 is an exploded view of the automobile headlight of Figure 5;
  • FIG. 7 is an exploded view showing a second modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram showing a third modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing a fourth modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing a fifth modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 11 is a schematic view showing a sixth modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 12 is a schematic view showing a seventh modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram showing an eighth modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 14 is a schematic view showing a ninth modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram showing a tenth modified structure of an automobile headlight according to an embodiment of the present invention.
  • 16 is a schematic diagram showing an eleventh modified structure of an automobile headlight according to an embodiment of the present invention.
  • 17 is a schematic view showing a twelfth modified structure of an automobile headlight according to an embodiment of the present invention.
  • FIG. 18 is a schematic diagram showing a thirteenth modified structure of an automobile headlight according to an embodiment of the present invention.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • an embodiment of the present invention provides a planar temperature equalizing plate 1 including a hollow long plate-shaped evaporation chamber 303 and a hollow flat plate-shaped condensation chamber 304; the evaporation chamber 303 and the condensation chamber 304 communicate with each other.
  • the evaporation chamber 303 and the condensation chamber 304 are both vacuum chambers and filled with a cooling liquid; the evaporation chamber 303 and the inner wall of the condensation chamber 304 are both provided with a capillary core layer 305.
  • the evaporation chamber 303 is vertically fixed to the surface of the condensation chamber 304 to form a T-shaped planar structure.
  • the planar temperature equalizing plate 1 has an evaporation end 301 and a condensation end 302 corresponding to the evaporation end 301, and the evaporation end 301 and the condensation end 302 are arranged side by side.
  • the hollow cavity of the evaporation end 301 constitutes an evaporation chamber 303, and the hollow cavity of the condensation end 302 constitutes a condensation chamber 304.
  • the capillary core layer 305 has a thickness of from 0.1 mm to 100 mm and a porosity ratio of 50%.
  • the evaporation chamber 303 and the condensation chamber 304 should be maintained at a suitable thickness.
  • the coolant is water.
  • the coolant may also adopt other substances having a gas-liquid two-phase phase change property, such as ethanol, acetone, etc., and may be selected according to the heat generation temperature of the heat source and the phase transition temperature of the phase change material.
  • the evaporation chamber 303 and the condensation chamber 304 are made of red or aluminum, and the capillary core layer 305 is made of copper or aluminum.
  • the end of the casing of the evaporation chamber 303 is provided with a vacuum suction hole 13 , and the vacuum suction hole 13 is connected to the evaporation chamber 303 , wherein the evaporation chamber 303 has a rectangular shape.
  • the condensation chamber 304 has a trapezoidal shape, and the vacuum suction hole 13 is located at the free end of the rectangular evaporation chamber 303 in the longitudinal direction.
  • the housing end of the condensation chamber 304 is provided with a vacuum suction hole 13 communicating with the condensation chamber 304, wherein: the evaporation chamber The 303 has a rectangular shape, the condensation chamber 304 has a trapezoidal shape, and the vacuum suction hole 13 is located on the outer surface of the oblique side of the rectangular trapezoidal condensation chamber 304.
  • the shape of the condensation chamber 304 and the evaporation chamber 303 is designed to accelerate the flow rate of the vaporized coolant. , thereby improving the heat dissipation efficiency of the product.
  • the principle of phase change heat dissipation and capillary structure transmission is adopted in the planar temperature equalizing plate 1 : the cooling liquid is absorbed in the capillary core layer 305; when the evaporation end 301 is heated, the evaporation end 301 is The coolant in the capillary core layer 305 absorbs heat and vaporizes, and the vapor phase coolant 109 overflows from the capillary core layer 305, flows toward the condensation chamber 304 along the evaporation chamber 303, and condenses and liquefies in the condensation chamber 304.
  • the phase coolant 110 is drawn into the capillary core layer 305 of the condensation end 302 and transported to the capillary core layer 305 of the evaporation end 301 by capillary action of the capillary core layer 305, thereby completing a heat dissipation cooling cycle.
  • the cross-sectional size of the condensation chamber 304 is larger than the cross-sectional size of the evaporation chamber 303.
  • a further embodiment of the present invention provides a method for preparing the planar temperature equalizing plate 1, comprising the following steps:
  • Step S1 pressing the copper powder particles or the aluminum powder particles on the inner side surfaces of the two stamped oxygen-free copper plates or the oxygen-free aluminum plates, respectively, or pressing the copper mesh or the aluminum mesh to form a capillary core layer 305.
  • the two plates are all oxygen-free copper plates, and the two plates are all oxygen-free aluminum plates.
  • Step S2 performing pressure welding or metal soldering on the two plates in an atmosphere-protected environment, so that a condensation chamber 304 and an evaporation chamber 303 communicating with each other are formed between the two plates, and a vacuum is reserved on the plate. Air venting hole 13. Specifically, the two plates are welded and combined to form a hollow casing, and the condensation chamber 304 and the evaporation chamber 303 which communicate with each other are formed in the hollow casing.
  • the vacuum suction hole 13 is in communication with the condensation chamber 304 and is located at the end of the casing of the condensation chamber 304.
  • the evaporation chamber 303 has a rectangular shape
  • the condensation chamber 304 has a rectangular trapezoidal shape and a vacuum suction hole. 13 is located on the outer surface of the hypotenuse of the conical chamber 304 of the right angle trapezoid.
  • the vacuum suction hole 13 is in communication with the evaporation chamber 303 and is located at the end of the casing of the evaporation chamber 303.
  • the evaporation chamber 303 has a rectangular shape, and the condensation chamber 304 has a trapezoidal shape at a right angle.
  • the air hole 13 is located at the free end of the rectangular evaporation chamber 303 in the longitudinal direction.
  • Step S3 In an atmosphere-protected environment, a copper tube or an aluminum tube is inserted into the vacuum suction hole 13 for welding and reduction of oxygen to form a suction and liquid injection joint.
  • Step S4 injecting a cooling liquid into the condensation chamber 304 and the evaporation chamber 303 from the suction liquid injection joint and vacuuming, vacuuming, pressing the bending seal, and performing fusion sealing to obtain a flat temperature equalizing plate 1. Specifically, after evacuating, the suction injecting joint is pressed, and it is bent and sealed.
  • the sintering temperature of the copper powder particles and the copper mesh is 800 ° C to 1050 ° C, and the sintering time is 1 h to 6 h.
  • the copper powder particles or the aluminum powder particles have a diameter of 10 ⁇ m to 1000 ⁇ m and a cover thickness of 0.1 mm to 100 mm.
  • the sintering temperature of the copper mesh and the aluminum mesh is 400 ° C to 550 ° C, and the sintering time is 1 h to 6 h.
  • the atmosphere protection is nitrogen protection; during the nitrogen protection process, the nitrogen protection is gradually lowered from 1050° to 80°, and the time is 5 min to 30 min.
  • an embodiment of the present invention further provides an automobile headlight, comprising an LED light source 101, a bulb metal cover 2, a heat dissipating component, and the planar temperature equalizing plate 1; the LED light source 101 is attached to The outer surface of the evaporation chamber 303 is used for transferring the heat generated by the LED light source into the evaporation chamber of the planar temperature equalizing plate; the bulb metal cover 2 is sleeved outside the LED light source 101 and the planar temperature equalizing plate 1; the heat dissipating component and the bulb metal The outer cover 2 is connected and is capable of cooling the condensation chamber 304. It should be noted that the automobile headlights shown in FIG. 5 and FIG.
  • FIG. 6 adopt the planar temperature equalizing plate shown in FIG. 1
  • the automobile headlights shown in FIG. 7 adopt the planar average temperature shown in FIG.
  • the plate, and the car headlight shown in FIGS. 8 to 18 can adopt any one of the planar temperature equalizing plates shown in FIG. 3 or FIG.
  • the exterior of the bulb metal cover 2 is further provided with a quartz glass protection tube 103 and a top cap 104 for further protection.
  • the bulb metal cover is located within the tube of the quartz glass shield.
  • the bulb metal cover consists of two symmetrical half shells.
  • the automobile headlight integrates four heat dissipation technologies of phase change heat dissipation, metal heat sink heat conduction heat dissipation, air cooling heat dissipation and radiation heat dissipation, which can timely and efficiently dissipate the heat generated by the LED light source 101, thereby ensuring that the LED light source 101 is maintained at a suitable level. Working temperature.
  • the length of the planar temperature equalizing plate 1 can be greatly reduced, thereby reducing the occupation space of the planar temperature equalizing plate 1.
  • the LED light source 101 has better illumination focusing effect, improves the luminescence performance of the product, and ensures the stability of use of the product.
  • the setting of the power distribution box 4 makes the voltage and current of the LED light source 101 and the heat dissipation component more stable. The heat dissipation function of the heat dissipation component is ensured, and the illumination stability of the LED light source 101 is better.
  • the flat planar temperature plate 1 of the T-shaped planar structure makes the flow of the cooling liquid shorter and the circulation speed is faster; the area of the evaporation chamber 303 and the condensation chamber 304 is larger, and it is easier to install with the LED light source 101 and other heat sink components. And the heat absorption and heat dissipation effect is better; the structure is more stable and the shockproof effect is good.
  • the automobile headlight further includes a power distribution box 4; the power distribution box 4 is electrically connected to the LED light source 101 and the heat dissipation component, respectively, and the power distribution box is connected to the vehicle power source. Power is supplied to the power distribution box through the car's power supply.
  • the LED light source 101 is two sets, respectively attached to the upper and lower surfaces of the evaporation chamber 303 , and the total thickness of the LED light source 101 and the evaporation chamber 303 does not exceed 3 mm. That is, the LED light source 101 is attached to the outer surface of the evaporation chamber 303.
  • the planar temperature equalizing plate 1 can be made very thin, and can meet the precise focusing of the X-axis, the Y-axis, and the Z-axis of each model free-form surface of each automobile headlight assembly. And provide a good light type to replace the original halogen headlights or HID headlights.
  • the heat dissipating component comprises: a base housing 31, a fan 32 and a finned heat sink 102; the base housing 31 encloses the fan 32 and the finned heat sink 102 And the base housing 31 is provided with a wire interface.
  • the finned heat sink 102 has the same direction as the axial direction of the planar temperature equalizing plate 1 to cooperate with the fan 32.
  • the front end of the finned heat sink 102 is attached to the outer surface of the condensation chamber 304 to cool the condensation chamber 304 of the planar temperature equalizing plate 1; the fan 32 is disposed at the rear end of the finned heat sink 102 and the condensation end 302.
  • the sheet heat sink 102 supplies air to accelerate the cooling of the finned heat sink 102.
  • the fan 32 is fixed in the base housing 31 by screws, and the base housing 31 completely encloses the finned heat sink 102 and is fixed by screws.
  • One end of the base housing 31 is open to fit the finned heat sink 102.
  • the other end is provided with a circular hole matching the size of the fan 32 for supplying air. It should be noted that the open end of the base housing 31 is close to the bulb metal cover 2, and the other end of the base housing 31 having the circular hole is away from the bulb. Metal cover 2.
  • the heat dissipating component comprises: a base housing 31, a fan 32 and a finned heat sink 102; one end of the base housing 31 is connected to the bulb metal cover 2, The other end is provided with an air inlet, and the air outlet 311 is disposed on the side wall surface of the base housing 31.
  • the base housing 31 encloses the fan 32 and the finned heat sink 102, and the base housing 31 is provided with a wire interface.
  • the air outlet 311 is disposed at one end of the base, and the metal cover 2 of the bulb affects the wind, effectively increases the flow of the air volume, and increases the heat dissipation effect of the product.
  • the front end of the finned heat sink 102 is attached to the outer surface of the condensation chamber 304 to cool the condensation chamber 304 of the planar temperature equalizing plate 1; the fan 32 is disposed at the rear end of the finned heat sink 102 and located at At the air inlet, the cooling of the finned radiator 102 is accelerated; and the air outlet 311 is provided with a wind deflector.
  • the planar uniform temperature plate 1, the LED light source 101, the bulb metal cover 2, and the finned heat sink 102 are all connected by a high-temperature solder joint of tin-silver-copper environmental protection solder paste.
  • the finned heat sink 102 has a square structure and is formed by a plurality of horizontal fins and the like.
  • the bulb metal cover 2 is provided with a card slot 22, a socket 21 or a card board 23, and the card slot 22, the socket 21 or the card board 23 can be combined with various types.
  • the lamp assembly is matched to the housing.
  • the bulb metal cover 2 can also adopt various shapes and connection structures as needed, and can be combined with the headlights of various models.
  • the housing is matched, and the original halogen lamp or HID lamp can be directly replaced, without replacing the original lamp assembly shell, the focus is accurate, the installation is convenient, and the assembly cost is reduced.
  • the evaporation chamber 303 of the planar temperature equalizing plate 1 can be divided into a plurality of channels by the capillary core layer 305, so that the vapor phase coolant 109 flows in each channel to increase the flow velocity. Meanwhile, if the phase change efficiency on both sides of the evaporation end 301 of the planar temperature equalizing plate 1 is not uniform, the capillary core layer 305 constituting the channel can be adjusted.
  • the automobile headlight of the invention integrates four heat dissipation technologies of phase change heat dissipation, metal heat sink heat conduction heat dissipation, air cooling heat dissipation and radiation heat dissipation, high heat dissipation efficiency and good heat dissipation effect;
  • Working at 100 °C the bulb temperature is within 10 °C of the ambient temperature, lower than the diode PN section temperature;
  • the overall structure has good anti-vibration effect, firm structure, precise focus, and can provide a good light type, which can replace the original Some halogen or xenon lamps are available for all types of vehicles.

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  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

一种平面均温板及其制备方法及汽车头灯。平面均温板（1），包括中空长板形的蒸发腔（303）以及中空平板形的冷凝腔（304）；蒸发腔（303）与冷凝腔（304）相互连通，且蒸发腔（303）与冷凝腔（304）均为真空腔室并填充冷却液；蒸发腔（303）与冷凝腔（304）的内壁均设置有毛细芯层（305）。汽车头灯，包括LED光源（101）、灯泡金属外罩（2）、散热组件以及平面均温板（1）；LED光源（101）贴设在蒸发腔（303）的外表面上；灯泡金属外罩（2）套设在LED光源（101）及平面均温板（1）外；散热组件与灯泡金属外罩（2）连接，并能够对冷凝腔（304）进行冷却。扩大了安装面积与散热面积，可以更有效的利用空间；缩短了冷却液的循环流程，扩大了接触面积，从而提高了散热效率，散热效果更好。

Description

平面均温板及其制备方法及汽车头灯 技术领域
本发明涉及车灯技术领域，尤其是涉及一种平面均温板及其制备方法及汽车头灯。
背景技术
由于均温板(Vapor Chamber)具有高热传导力、高热传导率、重量轻、结构简单及多用途等特性，可传递大量的热量又不消耗电力等优点，目前已广泛地应用于电子组件的导热，由此对发热组件(如电子元器件、LED芯片等)进行热量的快速导离，以有效的解决发热组件的热聚集现象。
但是，现有的均温散板，由于其使用空间的限制，导致散热部分的面积较小，影响了散热器件的尺寸、散热方式及安装，从而导致散热效率不高。
发明内容
本发明的目的在于提供一种平面均温板及其制备方法及汽车头灯，以解决现有技术中存在的散热面积小、散热器件不易安装的技术问题。
本发明提供了一种平面均温板，包括中空长板形的蒸发腔以及中空平板形的冷凝腔；所述蒸发腔与所述冷凝腔相互连通，且所述蒸发腔与所述冷凝腔均为真空腔室并填充冷却液；所述蒸发腔与所述冷凝腔的内壁均设置有毛细芯层。
进一步地，所述冷凝腔的壳体端部设置有真空抽气孔，所述真空抽气孔与所述冷凝腔相连通，其中：所述蒸发腔呈长方形，所述冷凝腔呈直角梯形，所述真空抽气孔位于直角梯形的所述冷凝腔的斜边的外表面上。
进一步地，所述蒸发腔的壳体端部设置有真空抽气孔，所述真空抽气孔与所述蒸发腔相连通，其中：所述蒸发腔呈长方形，所述冷凝腔呈直角梯形，所述真空抽气孔位于长方形的所述蒸发腔的长度方向的自由端。
进一步地，所述毛细芯层的厚度为0.1mm～100mm，孔隙比率为50％。
本发明还提供了一种所述的平面均温板的制备方法，其特征在于，包括以下步骤：
分别在两片冲压成型好的无氧铜板体或无氧铝板体的内侧表面压制覆盖铜粉颗粒或铝粉颗粒，或者压制铜丝网或铝丝网，烧结形成毛细芯层；
将两片板体在气氛保护的环境中进行加压焊接或金属焊料焊接，使得两片板体之间形成相互连通的冷凝腔和蒸发腔，且在板体上预留真空抽气孔；
在气氛保护的环境中，在真空抽气孔中插一铜管或铝管进行焊接并还原除氧，以形成抽气注液接头；
从抽气注液接头处向冷凝腔和蒸发腔内注入冷却液并抽真空，抽真空后挤压折弯封口，并进行熔结密封，得到平面均温板。
可选地，所述毛细芯层的烧结过程中，所述铜粉颗粒和铜丝网的烧结温度为800℃～1050℃，烧结时间为1h～6h。
可选地，所述毛细芯层的烧结过程中，所述铜丝网和铝丝网的烧结温度为400℃～550℃，烧结时间为1h～6h。
可选地，所述铜粉颗粒或铝粉颗粒的直径为10微米～1000微米，覆盖厚度为0.1毫米～100毫米。
本发明提供了一种汽车头灯，包括LED光源、灯泡金属外罩、散热组件以及所述的平面均温板；
所述LED光源贴设在所述蒸发腔的外表面上；
所述灯泡金属外罩套设在所述LED光源及所述平面均温板外；
所述散热组件与所述灯泡金属外罩连接，并能够对所述冷凝腔进行冷却。
进一步地，还包括配电盒；所述配电盒分别与所述LED光源和所述散热组件电连接。
进一步地，所述LED光源为两组，分别贴设在蒸发腔的上下两个表面，且所述LED光源与所述蒸发腔的总厚度不超过3mm。
进一步地，所述散热组件包括：底座外壳、风扇和翅片散热器；所述底座外壳的一端与所述灯泡金属外罩相连接，另一端设置有进风口，且所述底座外壳的侧壁面上设置有出风口，其中：所述底座外壳将风扇及翅片散热器包裹在内，且所述底座外壳上设有电线接口。
进一步地，所述翅片散热器的前端贴设在所述冷凝腔的外表面上，对所述平面均温板的冷凝腔进行冷却；
所述风扇设置在所述翅片散热器的后端，并位于所述进风口处，以实现加快所述翅片散热器的冷却。
进一步地，所述出风口处设置有导风板。
进一步地，所述平面均温板、所述LED光源、所述灯泡金属外罩、所述翅片散热器之间均采用锡银铜环保锡膏高温焊接连接。
与现有技术相比，本发明的有益效果为：
本发明扩大了安装面积与散热面积，可以更有效的利用空间；缩短了冷却液的循环流程，扩大了接触面接，从而提高了散热效率，散热效果更好。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，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的附图。
图1为本发明实施例提供的平面均温板的截面剖视图；
图2为图1中A处的局部放大示意图；
图3为本发明实施例提供的平面均温板的第二种变形结构示意图；
图4为本发明实施例提供的平面均温板的第三种变形结构示意图；
图5为本发明实施例提供的汽车头灯的装配图；
图6为图5中的汽车头灯的分解图；
图7为本发明实施例提供的汽车头灯的第二种变形结构的分解图；
图8为本发明实施例提供的汽车头灯的第三种变形结构示意图；
图9为本发明实施例提供的汽车头灯的第四种变形结构示意图；
图10为本发明实施例提供的汽车头灯的第五种变形结构示意图；
图11为本发明实施例提供的汽车头灯的第六种变形结构示意图；
图12为本发明实施例提供的汽车头灯的第七种变形结构示意图；
图13为本发明实施例提供的汽车头灯的第八种变形结构示意图；
图14为本发明实施例提供的汽车头灯的第九种变形结构示意图；
图15为本发明实施例提供的汽车头灯的第十种变形结构示意图；
图16为本发明实施例提供的汽车头灯的第十一种变形结构示意图；
图17为本发明实施例提供的汽车头灯的第十二种变形结构示意图；
图18为本发明实施例提供的汽车头灯的第十三种变形结构示意图。
附图标记：
1-平面均温板；2-灯泡金属外罩；
4-配电盒；13-真空抽气孔；21-插口；
22-卡槽；23-卡板；31-底座外壳；
32-风扇；311-出风口；101-LED光源；
102-翅片散热器；103-石英玻璃防护管；104-顶帽；
109-气相冷却液；110-液相冷却液；301-蒸发端；
302-冷凝端；303-蒸发腔；304-冷凝腔；
305-毛细芯层。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，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发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，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”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；可以是机械连接，也可以是电连接；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，可以具体情况理解上述术语在本发明中的具体含义。
参见图1至图4所示，本发明实施例提供一种平面均温板1，包括中空长板形的蒸发腔303以及中空平板形的冷凝腔304；蒸发腔303与冷凝腔304相互连通，且蒸发腔303与冷凝腔304均为真空腔室并填充冷却液；蒸发腔303与冷凝腔304的内壁均设置有毛细芯层305。蒸发腔303垂直固定在冷凝腔304的表面上，组成T形的平面结构。具体而言，平面均温板1具有蒸发端301以及与蒸发端301相对应的冷凝端302，蒸发端301与冷凝端302并排设置。蒸发端301的中空腔构成蒸发腔303，冷凝端302的中空腔构成冷凝腔304。
该实施例的可选方案中，毛细芯层305的厚度为0.1mm～100mm，孔隙比率为50％。为保证冷却液的气液循环过程，并加快热传导效率，蒸发腔303和冷凝腔304应保持合适的厚度。
该实施例的可选方案中，冷却液采用水。当然，冷却液也可以采用其他的具有气液两相相变性能的物质，如乙醇、丙酮等，可以根据热源的发热温度以及相变材料的相变温度进行选择。蒸发腔303和冷凝腔304采用红铜或铝制备，毛细芯层305采用铜或铝制备。
参见图1所示，该实施例的一可选方案中，蒸发腔303的壳体端部设置有真空抽气孔13，真空抽气孔13与蒸发腔303相连通，其中：蒸发腔303呈长方形，冷凝腔304呈直角梯形，真空抽气孔13位于长方形的蒸发腔303的长度方向的自由端。
参见图3和图4所示，该实施例的另一可选方案中，冷凝腔304的壳体端部设置有真空抽气孔13，真空抽气孔13与冷凝腔304相连通，其中：蒸发腔303呈长方形，冷凝腔304呈直角梯形，真空抽气孔13位于直角梯形的冷凝腔304的斜边的外表面上。这样的设计使真空抽气孔13占用的空间减小，方便使用真空抽气孔13后对其进行密封处理，同时，冷凝腔304和蒸发腔303的形状设计有利于加快气化的冷却液的流动速度，从而提高了产品的散热效率。
参见图1所示，该实施例中，平面均温板1内采用相变散热方式及毛细结构传输的原理：冷却液吸纳于毛细芯层305中；当蒸发端301受热时，蒸发端301处的毛细芯层305中的冷却液吸热气化，气相冷却液109从毛细芯层305中溢出，顺着蒸发腔303向冷凝腔304方向流动，并在冷凝腔304中放热冷凝液化，液相冷却液110被吸入冷凝端302的毛细芯层305中，再通过毛细芯层305的毛细作用向蒸发端301的毛细芯层305输送，从而完成一个散热冷却循环。需要说明的是，该实施例中，冷凝腔304的横截面尺寸大于蒸发腔303的横截面尺寸。这样的结构，可以在冷凝腔304与蒸发腔303之间形成压差，从而可以加快气相冷却液109的流动速度，增加循环速度和散热效率。
本发明还实施例提供了所述的平面均温板1的制备方法，包括以下步骤：
步骤S1：分别在两片冲压成型好的无氧铜板体或无氧铝板体的内侧表面压制覆盖铜粉颗粒或铝粉颗粒，或者压制铜丝网或铝丝网，烧结形成毛细芯层305。具体而言，两片板体均为无氧铜板体，两片板体均为无氧铝板体。
步骤S2：将两片板体在气氛保护的环境中进行加压焊接或金属焊料焊接，使得两片板体之间形成相互连通的冷凝腔304和蒸发腔303，且在板体上预留真空抽气孔13。具体而言，两片板体焊接结合后组成形成中空壳体，中空壳体内形成相互连通的冷凝腔304和蒸发腔303。
该步骤S2一可选的方案中，真空抽气孔13与冷凝腔304相连通，并位于冷凝腔304的壳体端部，其中：蒸发腔303呈长方形，冷凝腔304呈直角梯形，真空抽气孔13位于直角梯形的冷凝腔304的斜边的外表面上。
该步骤S2另一可选的方案中，真空抽气孔13与蒸发腔303相连通，并位于蒸发腔303的壳体端部，其中：蒸发腔303呈长方形，冷凝腔304呈直角梯形，真空抽气孔13位于长方形的蒸发腔303的长度方向的自由端。
步骤S3：在气氛保护的环境中，在真空抽气孔13中插一铜管或铝管进行焊接并还原除氧，以形成抽气注液接头。
步骤S4：从抽气注液接头处向冷凝腔304和蒸发腔303内注入冷却液并抽真空，抽真空后挤压折弯封口，并进行熔结密封，得到平面均温板1。具体而言，抽真空后，对抽气注液接头进行挤压，并将其折弯后封口。
在步骤S1中，毛细芯层305的烧结过程中，铜粉颗粒和铜丝网的烧结温度为800℃～1050℃，烧结时间为1h～6h。铜粉颗粒或铝粉颗粒的直径为10微米～1000微米，覆盖厚度为0.1毫米～100毫米。
在步骤S1中，毛细芯层305的烧结过程中，铜丝网和铝丝网的烧结温度为400℃～550℃，烧结时间为1h～6h。
需要说明的是，该实施例提的平面均温板1的制备方法中气氛保护为氮气保护；氮气保护过程中，氮气保护从1050°逐渐降温至80°，时间为5min～30min。
参见图5至图18所示，本发明实施例还提供了一种汽车头灯，包括LED光源101、灯泡金属外罩2、散热组件以及所述的平面均温板1；LED光源101贴设在蒸发腔303的外表面上，用于将LED光源产生的热量传递到平面均温板的蒸发腔内；灯泡金属外罩2套设在LED光源101及平面均温板1外；散热组件与灯泡金属外罩2连接，并能够对冷凝腔304进行冷却。需要说明的是，图5和图6中所示的汽车头灯采用了图1中所示的平面均温板，图7中所示的汽车头灯采用了图3中所示的平面均温板，而图8至图18中所示的汽车头灯均可采用图3或图4中所示的平面均温板中的任意一种。
参见图5和图6所示，该实施例可选的方案中，灯泡金属外罩2外部还套装有石英玻璃防护管103及顶帽104，起到进一步的保护作用。具体而言，灯泡金属外罩位于石英玻璃防护管的管内。灯泡金属外罩由两个对称的半壳组成。
该汽车头灯集成了相变散热、金属散热片热传导散热、风冷散热及辐射散热四种散热技术手段，可以及时高效的把LED光源101产生的热量散发出去，从而保证LED光源101保持在合适的工作温度。
该实施例提供的汽车头灯，当真空抽气孔13设置在冷凝腔304的壳体端部时，平面均温板1的长度的可以大大缩减，从而减小了平面均温板1的占用空间，使LED光源101的发光聚焦效果更好，提高了产品的发光性能，保证了产品的使用稳定性，同时，配电盒4的设置，使LED光源101和散热组件的电压和电流更加稳定，保证了散热组件的散热功能，使LED光源101的发光稳定性更好。
另外，T形的平面结构的平面均温板1，使得冷却液的流程更短，循环速度更快；蒸发腔303与冷凝腔304的面积更大，更容易与LED光源101及其他散热器件安装，且吸热散热效果更好；结构更加稳定，防震效果好。
参见图8所示，该实施例的可选方案中，汽车头灯，还包括配电盒4；配电盒4分别与LED光源101和散热组件电连接，配电盒与汽车电源相连接，通过汽车电源向配电盒供电。
参见图6所示，该实施例的可选方案中，LED光源101为两组，分别贴设在蒸发腔303的上下两个表面，且LED光源101与蒸发腔303的总厚度不超过3mm，也就是说，LED光源101贴设在蒸发腔303的外表面。需要说明的是，在该实施例中，可以将平面均温板1做的很薄，能够满足各款汽车头灯总成的各型号自由曲面的X轴、Y轴、Z轴的精准对焦，并提供良好的光型，以替代原有的卤素大灯或HID大灯。
参见图5和图6所示，该实施例的可选方案中，散热组件包括：底座外壳31、风扇32和翅片散热器102；底座外壳31将风扇32及翅片散热器102包裹在内，且底座外壳31上设有电线接口。具体而言，翅片散热器102的走向与平面均温板1的轴线方向相同，以配合风扇32工作。翅片散热器102的前端贴设在冷凝腔304的外表面上，对平面均温板1的冷凝腔304进行冷却；风扇32设置在翅片散热器102及冷凝端302的后端，为翅片散热器102供风，以加快翅片散热器102的冷却。风扇32通过螺钉固定在底座外壳31内，且底座外壳31将翅片散热器102完全包裹在内，并通过螺钉固定，其中：底座外壳31的一端为敞口，以套装翅片散热器102，另一端设置有与风扇32尺寸匹配的圆孔，用于供风；需要说明的是，底座外壳31的敞口的一端靠近灯泡金属外罩2，底座外壳31的开设有圆孔的另一端远离灯泡金属外罩2。
参见图8至图18所示，该实施例的另一可选方案中，散热组件包括：底座外壳31、风扇32和翅片散热器102；底座外壳31的一端与灯泡金属外罩2相连接，另一端设置有进风口，且底座外壳31的侧壁面上设置有出风口311，其中：底座外壳31将风扇32及翅片散热器102包裹在内，且底座外壳31上设有电线接口。这样避免了在底座的一端设置出风口311，灯泡金属外罩2会影响出风的情况，有效地提高了风量的流动，增加了产品的散热效果。具体而言，翅片散热器102的前端贴设在冷凝腔304的外表面上，对平面均温板1的冷凝腔304进行冷却；风扇32设置在翅片散热器102的后端，并位于进风口处，以实现加快翅片散热器102的冷却；出风口311处设置有导风板。
该实施例的可选方案中，平面均温板1、LED光源101、灯泡金属外罩2、翅片散热器102之间均采用锡银铜环保锡膏高温焊接连接。翅片散热器102为方形结构，由多个水平翅片等间隙排列而成。
参见图8至图18所示，该实施例的可选方案中，灯泡金属外罩2上设置卡槽22、插口21或卡板23，卡槽22、插口21或卡板23能够与各种类型的车灯总成外壳匹配连接。在该实施例中，灯泡金属外罩2还可以根据需要，采用各种外形和连接结构，能够与各种车型的车灯总 成外壳匹配，可以直接替换原来的卤素灯或HID灯，无需更换原有的车灯总成外壳，对焦精准，安装方便，同时，降低了装配成本。
需要说的是，该实施例中，平面均温板1的蒸发腔303中，可以用毛细芯层305分隔成多条通道，使气相冷却液109在各条通道内流动，增加流动速度。同时，如果平面均温板1的蒸发端301两侧的相变效率不均衡时，可以通过构成通道的毛细芯层305起到调节的作用。
综上所述，本发明的汽车头灯，该汽车头灯集成了相变散热、金属散热片热传导散热、风冷散热及辐射散热四种散热技术手段，散热效率高，散热效果好；整灯在100℃环境下工作，灯泡温度跟环境温度相差在10℃以内，低于二极管PN节节温；整体结构的防震效果好，结构牢固，对焦精准，能够提供良好的光型，可以完美替换原有的卤素灯或氙气灯，适用于各种车型。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。此外，本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。例如，在下面的权利要求书中，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。

Claims (15)

  1. 一种平面均温板，其特征在于，包括中空长板形的蒸发腔以及中空平板形的冷凝腔；所述蒸发腔与所述冷凝腔相互连通，且所述蒸发腔与所述冷凝腔均为真空腔室并填充冷却液；所述蒸发腔与所述冷凝腔的内壁均设置有毛细芯层。
  2. 根据权利要求1所述的平面均温板，其特征在于，所述冷凝腔的壳体端部设置有真空抽气孔，所述真空抽气孔与所述冷凝腔相连通，其中：所述蒸发腔呈长方形，所述冷凝腔呈直角梯形，所述真空抽气孔位于直角梯形的所述冷凝腔的斜边的外表面上。
  3. 根据权利要求1所述的平面均温板，其特征在于，所述蒸发腔的壳体端部设置有真空抽气孔，所述真空抽气孔与所述蒸发腔相连通，其中：所述蒸发腔呈长方形，所述冷凝腔呈直角梯形，所述真空抽气孔位于长方形的所述蒸发腔的长度方向的自由端。
  4. 根据权利要求1-3中任一项所述的平面均温板，其特征在于，所述毛细芯层的厚度为0.1mm～100mm，孔隙比率为50％。
  5. 一种权利要求1-4任一项所述的平面均温板的制备方法，其特征在于，包括以下步骤：
    分别在两片冲压成型好的无氧铜板体或无氧铝板体的内侧表面压制覆盖铜粉颗粒或铝粉颗粒，或者压制铜丝网或铝丝网，烧结形成毛细芯层；
    将两片板体在气氛保护的环境中进行加压焊接或金属焊料焊接，使得两片板体之间形成相互连通的冷凝腔和蒸发腔，且在板体上预留真空抽气孔；
    在气氛保护的环境中，在真空抽气孔中插一铜管或铝管进行焊接并还原除氧，以形成抽气注液接头；
    从抽气注液接头处向冷凝腔和蒸发腔内注入冷却液并抽真空，抽真空后挤压折弯封口，并进行熔结密封，得到平面均温板。
  6. 根据权利要求5所述的平面均温板的制备方法，其特征在于，所述毛细芯层的烧结过程中，所述铜粉颗粒和铜丝网的烧结温度为800℃～1050℃，烧结时间为1h～6h。
  7. 根据权利要求5所述的平面均温板的制备方法，其特征在于，所述毛细芯层的烧结过程中，所述铜丝网和铝丝网的烧结温度为400℃～550℃，烧结时间为1h～6h。
  8. 根据权利要求5所述的平面均温板的制备方法，其特征在于，所述铜粉颗粒或铝粉颗粒的直径为10微米～1000微米，覆盖厚度为0.1毫米～100毫米。
  9. 一种汽车头灯，其特征在于，包括LED光源、灯泡金属外罩、散热组件以及权利要求1-4中任一项所述的平面均温板；
    所述LED光源贴设在所述蒸发腔的外表面上；
    所述灯泡金属外罩套设在所述LED光源及所述平面均温板外；
    所述散热组件与所述灯泡金属外罩连接，并能够对所述冷凝腔进行冷却。
  10. 根据权利要求9所述的汽车头灯，其特征在于，还包括配电盒；所述配电盒分别与所述LED光源和所述散热组件电连接。
  11. 根据权利要求9所述的汽车头灯，其特征在于，所述LED光源为两组，分别贴设在蒸发腔的上下两个表面，且所述LED光源与所述蒸发腔的总厚度不超过3mm。
  12. 根据权利要求9-11中任一项所述的汽车头灯，其特征在于，所述散热组件包括：底座外壳、风扇和翅片散热器；所述底座外壳的一端与所述灯泡金属外罩相连接，另一端设置有进风口，且所述底座外壳的侧壁面上设置有出风口，其中：所述底座外壳将风扇及翅片散热器包裹在内，且所述底座外壳上设有电线接口。
  13. 根据权利要求12所述的汽车头灯，其特征在于，所述翅片散热器的前端贴设在所述冷凝腔的外表面上，对所述平面均温板的冷凝腔进行冷却；
    所述风扇设置在所述翅片散热器的后端，并位于所述进风口处，以实现加快所述翅片散热器的冷却。
  14. 根据权利要求12所述的汽车头灯，其特征在于，所述出风口处设置有导风板。
  15. 根据权利要求12所述的汽车头灯，其特征在于，所述平面均温板、所述LED光源、所述灯泡金属外罩、所述翅片散热器之间均采用锡银铜环保锡膏高温焊接连接。
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