Liquid cooling high-voltage box

Abstract

The utility model relates to the technical field of high-voltage box equipment, and discloses a liquid-cooled high-voltage box. The liquid cooling high-voltage box comprises a box body, wherein a main liquid cooling plate is arranged at the bottom of the box body; and the glue sealing box is arranged on the main liquid cooling plate, electronic components are arranged in the glue sealing box, and the glue sealing box is used for pouring liquid or glue with insulation and thermal conductivity. According to the liquid-cooled high-voltage box provided by the utility model, the electronic components in the high-voltage box are arranged in the glue sealing box, the liquid or colloid with insulation and thermal conductivity is poured into the glue sealing box, and the box body is combined with the main liquid-cooled plate as a bottom plate; heat can be directly and effectively transmitted to the liquid cooling plate in a concentrated mode through insulating and heat-conducting liquid or colloid for heat dissipation, equivalently, heat concentration is controlled firstly, then heat dissipation is conducted together, the heat dissipation effect is greatly improved, continuous circulating cooling can be achieved, and the sustainability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage box equipment, in particular to a liquid-cooled high-voltage box. Background Art

[0002] The high-voltage box is one of the components of the power storage container system. After the battery boxes of a single cluster are connected in series, they are connected to the high-voltage box. In the power storage container system, there are multiple battery clusters, each battery cluster is connected in parallel, and the DC cables are connected in parallel from the high-voltage box to the junction cabinet. When in use, the high-voltage box often faces the problem of heat dissipation. For example, in some cases, the high-voltage box itself is 1P65 grade and naturally cooled. If the energy storage system is less than 0.5P, the heat dissipation of the high-voltage box can still be normal; if the system is greater than 0.5P, or the current of the battery cell increases, the temperature inside the high-voltage box will reach 170 degrees or even higher, so the high-voltage box needs to be cooled to protect the internal batteries and components.

[0003] The heat dissipation method used in the prior art is mainly to install a cooling fan inside the high-voltage box to discharge the internal heat through the fan for heat dissipation. However, the cooling fan has a short lifespan. After a certain period of use, the heat dissipation effect decreases. In addition, it needs to be driven by an additional motor to rotate, which increases the heat source. Time anomalies become a burden. In addition, there are some methods of using liquid cooling in the prior art for heat dissipation. If the liquid cooling method is only set at the bottom, the temperature in the upper part of the high-voltage box is difficult to dissipate in time. If liquid cooling is used as a whole, the cost will increase greatly.

[0004] Therefore, the high-voltage box in the prior art has the problem of poor heat dissipation effect and difficulty in sustainability. Utility Model Content

[0005] In view of the above problems, the utility model aims to provide a liquid-cooled high-pressure box, which can solve the problem that the high-pressure box in the prior art has poor heat dissipation effect and is difficult to sustain.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A liquid-cooled high-pressure box, comprising:

[0008] A box body, a main liquid cooling plate is arranged at the bottom of the box body; and

[0009] A sealing box, wherein the sealing box is arranged on the main liquid cold plate, electronic components are arranged inside the sealing box, and the sealing box is used for filling liquid or colloid with insulating thermal conductivity.

[0010] Preferably, the types of liquid or colloid poured into the sealing box include but are not limited to potting glue and heat transfer oil.

[0011] Preferably, a waterproof plate is provided outside the main liquid cooling plate.

[0012] Preferably, the waterproof board is made of EVA foam.

[0013] Preferably, the sealing box uses the main liquid cooling plate as a bottom plate, and the sealing box is sealed and connected to the main liquid cooling plate.

[0014] Preferably, the sealing box is made of insulating material, which includes but is not limited to plastic, asbestos, and rubber.

[0015] Preferably, a plurality of the sealing boxes are provided, and each sealing box is provided with one or more electronic components.

[0016] Preferably, a secondary liquid cooling plate is provided inside the box body, and the secondary liquid cooling plate is arranged on the inner wall of the box body and extends into the inside of the box body.

[0017] Preferably, the auxiliary liquid cooling plate is detachably arranged on the inner side wall of the box body.

[0018] Preferably, the auxiliary liquid cooling plate comprises an auxiliary liquid cooling plate body and a mounting seat, the side wall of the box body is provided with a mounting hole, the auxiliary liquid cooling plate body is inserted into the mounting hole, and the mounting seat is detachably arranged at the mounting hole.

[0019] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0020] The liquid-cooled high-voltage box provided by the utility model can directly and effectively transfer the heat from the insulating and thermally conductive liquid or colloid to the liquid cooling plate for heat dissipation by placing the electronic components in the high-voltage box in a sealing box, and then injecting a liquid or colloid with insulating and thermally conductive properties into the sealing box, and then combining the box body with a main liquid cooling plate as a bottom plate, so that the heat can be directly and effectively concentrated by the insulating and thermally conductive liquid or colloid to the liquid cooling plate for heat dissipation, which is equivalent to controlling the heat concentration first and then dissipating the heat together, which greatly improves the heat dissipation effect, and can continuously circulate the cooling with strong sustainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a liquid-cooled high-pressure box provided in an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of another state of the liquid-cooled high-pressure box provided by an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a liquid-cooled high-pressure box provided in another embodiment of the utility model.

[0024] In the attached drawings, 100, relay; 200, contactor; 300, resistor; 400, isolating switch; 1, box; 11, mounting hole; 2, main liquid cooling plate; 21, water inlet pipe head; 22, water outlet pipe head 3, sealing box; 4, waterproof board; 5, auxiliary liquid cooling plate; 51, auxiliary liquid cooling plate body; 52, mounting seat. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the utility model patent in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example 1

[0029] See also Figure 1-2 ,in Figure 1 and Figure 2 These are schematic diagrams of two different states of a liquid-cooled high-pressure box. This embodiment provides a liquid-cooled high-pressure box, including:

[0030] A box body 1, wherein a main liquid cooling plate 2 is arranged at the bottom of the box body 1; and

[0031] The sealing box 3 is arranged on the main liquid cold plate 2. Electronic components are arranged inside the sealing box 3. The sealing box 3 is used for filling liquid or colloid with insulating thermal conductivity.

[0032] It is understandable that the electronic components referred to in this embodiment may include conventional electronic components such as relays, resistors, switches, power supplies, contactors, etc., and can be specifically designed according to the circuits and electrical appliances actually installed in the high-voltage box. Figure 2 In the present embodiment, the high voltage box includes a relay 100, a contactor 200, a resistor 300, an isolating switch 400, etc., and the connection relationship between the electronic components is not further described here.

[0033] It can be understood that in this embodiment, the liquid cooling plate is a form of indirectly transferring the heat of the heating device to the cooling liquid enclosed in the circulation pipeline through a cold plate (usually a closed cavity made of heat-conducting metal such as copper and aluminum), and taking away the heat through the cooling liquid. Figure 1 As shown in the figure, the main structure of the main liquid cooling plate 2 is plate-shaped, and a cooling circulation pipeline loop is arranged inside the main liquid cooling plate 2 (not shown, and can be understood by referring to the prior art), and the cooling circulation pipeline loop mainly circulates the coolant, and the outside of the main liquid cooling plate 2 is provided with a water inlet pipe head 21 and a water outlet pipe head 22 of the coolant. The detailed structure of the main liquid cooling plate 2 is not further described here, and those skilled in the art can understand and implement it in combination with the above description and the conventional methods and means of the liquid cooling plate in the prior art.

[0034] It can be understood that the liquid or colloid with insulating thermal conductivity in this embodiment is mainly used to quickly and concentratedly transfer the heat of electronic components to the main liquid cold plate 2 to facilitate heat dissipation. The thermal conductivity of the liquid or colloid with insulating thermal conductivity can ensure the thermal conductivity effect, and its insulation can avoid short circuit, open circuit and other faults caused by contact with electronic components.

[0035] In this embodiment, the types of liquid or colloids poured into the sealing box 3 include but are not limited to potting glue and thermal oil. Among them, potting glue is generally used for bonding, sealing, potting and coating protection of electronic components in this field. The potting glue is in liquid state before solidification and has fluidity. The viscosity of the glue varies according to the material, performance and production process of the product. The potting glue can only realize its use value after it is completely solidified. After solidification, it can play the role of waterproof, moisture-proof, dust-proof, insulating, thermally conductive, confidential, anti-corrosion, temperature-resistant and shock-proof. There are many types of electronic potting glue. From the material type, there are three most commonly used types, namely epoxy resin potting glue, silicone resin potting glue and polyurethane potting glue. These three types of potting glue can be further divided into hundreds of different products. In this embodiment, there is no restriction on the specific types of potting glue. Those skilled in the art can select a specific potting glue based on the electronic components installed inside the high-voltage box and actual needs, and implement the solution of this embodiment in accordance with the actual needs and the method of using the potting glue. Thermal oil can be divided into synthetic thermal oil and mineral thermal oil according to its composition and manufacturing process. When selecting a specific type of thermal oil, you can refer to national standards for selection, and it mainly meets the requirement of insulating thermal conductivity. It will not be further described here. In addition, other liquids or colloids with insulating thermal conductivity properties can also be selected by those skilled in the art according to actual needs, and will not be further described here.

[0036] In this embodiment, if Figure 1-2 As shown in FIG, a waterproof plate 4 is arranged outside the main liquid cooling plate 2 .

[0037] It is understandable that when the main liquid cold plate 2 is cooling and dissipating heat, the temperature of the coolant circulating in the internal cooling circulation pipeline loop is relatively low. The outer side of the main liquid cold plate 2 is directly in contact with the air, and the moisture in the air is easily condensed, so that condensed water is generated on the outer side of the main liquid cold plate 2. On the one hand, there is a possibility that condensed water enters the liquid cooling high-pressure box and contacts the electronic components. On the other hand, it is not convenient for safety management, environmental management and other requirements. In this embodiment, a waterproof plate 4 is set on the outside of the main liquid cold plate 2. The main purpose is to prevent the generation of condensed water or prevent condensed water from entering the liquid cooling high-pressure box. The waterproof plate 4 can be a wooden board, plastic board or other insulating material that directly increases the thickness, separates the distance between the main liquid cold plate 2 body and the air, alleviates the low temperature and reduces the generation of condensed water, and can also be set with a heat-insulating material so that the temperature difference on the outer side of the main liquid cold plate 2 is not large. In the specific implementation, those skilled in the art can select the specific material of the waterproof plate 4 according to the above description.

[0038] Preferably, in this embodiment, the waterproof board 4 is made of EVA foam. EVA foam, full name Ethylene Vinyl Acetate, is a polymer material made of ethylene vinyl acetate copolymer resin and a foaming substance. EVA foam is widely used in protection, filling and cushioning in daily life due to its lightness, softness, shock resistance and pressure resistance. In this embodiment, EVA foam is used as the material of the waterproof board 4. On the one hand, as mentioned above, it can prevent the generation of condensed water, and on the other hand, it can also protect the liquid-cooled high-pressure box body.

[0039] In this embodiment, the sealing box 3 uses the main liquid cooling plate 2 as a bottom plate, and the sealing box 3 and the main liquid cooling plate 2 are sealed and connected.

[0040] Specifically, if the sealing box 3 is provided with a bottom surface separately, during heat dissipation, the heat needs to pass through the bottom surface before being transferred to the main liquid cold plate 2, and the heat transfer efficiency is affected. In this embodiment, the sealing box 3 directly uses the main liquid cold plate 2 as the bottom surface, so that the heat generated by the electronic components is directly transferred to the main liquid cold plate 2 for heat dissipation through the liquid or colloid in the sealing box 3, which reduces the obstacles to heat transfer and greatly improves the heat dissipation efficiency.

[0041] It is understandable that the sealed connection between the sealing box 3 and the main liquid cold plate 2 is mainly to prevent the liquid or colloid inside the sealing box 3 from leaking from the sealing box 3, and can be directly connected by welding or glue.

[0042] In this embodiment, the sealing box 3 is made of insulating material, which includes but is not limited to plastic, asbestos, and rubber.

[0043] It is understandable that the use of insulating material for the sealing box 3 is also convenient for preventing short circuits or other accidents that affect electronic components when in contact with electronic components.

[0044] In this embodiment, if Figure 2 As shown, there are multiple sealing boxes 3, and each sealing box 3 is provided with one or more electronic components. Specifically, multiple sealing boxes 3 can be effectively and reasonably matched according to the size of the electronic components, and there is no need to fill the entire box 1 with glue, which reduces the amount of sealing glue and avoids the situation where all electronic components cannot be effectively cooled when a certain sealing box 3 leaks. Figure 2 , the contactor 200 and the resistor 300 which are relatively close are arranged in the same sealing box 3, and other electronic components can also be adjusted accordingly according to actual needs, and more specific arrangement methods will not be further expanded here.

[0045] In addition, the liquid-cooled high-pressure box in this embodiment can also perform air convection heat exchange, exchanging the air with a higher internal temperature with the air with a lower external temperature for heat dissipation, and through space air heat exchange, the internal temperature of the high-pressure box body 1 can be kept low for a long time. When it is implemented specifically, a fan can be set to drive the internal and external air exchange, which will not be further described here.

[0046] The working process and principle of the liquid-cooled high-pressure box of the utility model:

[0047] When in use, first fix each sealing box 3 on the main liquid cold plate 2, then install the electronic components into the sealing boxes 3 respectively, fill the sealing boxes 3 with insulating and heat-conductive liquid or colloid, and when starting to run, directly take away the heat through the liquid or colloid in the sealing box 3 and transfer it to the main liquid cold plate 2. At the same time, a waterproof plate 4 is set on the back of the main liquid cold plate 2 to prevent the generation of condensed water or the flow into the box body 1. During the heat dissipation process, coolant can be transported to the internal circulating cooling pipeline loop of the main liquid cold plate 2.

[0048] Due to the adoption of the above technical solution, the liquid-cooled high-pressure box of this embodiment has the following beneficial effects:

[0049] The liquid-cooled high-voltage box provided by the utility model arranges electronic components in a sealing box 3, and then fills the sealing box 3 with an insulating and thermally conductive liquid or colloid, and then combines the box body 1 with the main liquid cold plate 2 as the bottom plate, so that heat can be directly and effectively concentratedly transferred from the insulating and thermally conductive liquid or colloid to the main liquid cold plate 2 for heat dissipation, which is equivalent to controlling the heat concentration first and then dissipating the heat together, which greatly improves the heat dissipation effect, and can continuously circulate cooling with strong sustainability.

[0050] Example 2

[0051] In this embodiment, if Figure 3 As shown, another liquid-cooled high-pressure box provided in this embodiment is different from that in Embodiment 1 in that an auxiliary liquid cooling plate 5 is arranged inside the box body 1, and the auxiliary liquid cooling plate 5 is arranged on the inner wall of the box body 1 and extends into the inside of the box body 1.

[0052] It can be understood that the auxiliary liquid cooling plate 5 and the main liquid cooling plate 2 have the same liquid cooling mechanism, and the design of the auxiliary liquid cooling plate 5 can effectively cool and dissipate the heat inside the box body 1, thereby improving the internal heat dissipation effect.

[0053] In this embodiment, the auxiliary liquid cooling plate 5 is detachably arranged on the inner wall of the box body 1. Figure 3 As shown in , the auxiliary liquid cooling plate 5 is arranged on the side of the box body 1. In addition, the auxiliary liquid cooling plate 5 can also be arranged on the top of the box body 1, which will not be further described here.

[0054] In this embodiment, if Figure 3 As shown in , the auxiliary liquid cooling plate 5 includes an auxiliary liquid cooling plate body 51 and a mounting seat 52 . The side wall of the box body 1 is provided with a mounting hole 11 . The auxiliary liquid cooling plate body 51 is inserted into the mounting hole 11 . The mounting seat 52 is detachably arranged at the mounting hole 11 .

[0055] It is understandable that the detachable arrangement facilitates the removal and replacement of the auxiliary liquid cooling plate 5, and also facilitates the installation of electronic components inside the housing 1. The detachable installation method includes conventional fixing methods such as bolts and slots, which will not be further described here.

[0056] It is understandable that the water inlet and outlet between the main liquid cooling plate 2 and the auxiliary liquid cooling plate 5 can be connected in sequence, that is, they belong to the same cooling circulation pipeline loop, reducing the setting of pipelines. It is not described in detail here, and technical personnel in this field can implement it according to the above description.

[0057] When in use, first fix each sealing box 3 on the main liquid cooling plate 2, then install the electronic components into the sealing boxes 3 respectively, fill the sealing boxes 3 with insulating and heat-conductive liquid or colloid, and then install the auxiliary liquid cooling plate 5 on the inner wall of the box 1. When the operation starts, the heat is directly taken away by the liquid or colloid in the sealing box 3 and transferred to the main liquid cooling plate 2. At the same time, the auxiliary liquid cooling plate 5 is also directly in contact with the hot air inside the box 1 to cool the air inside the box 1. At the same time, a waterproof plate 4 is set on the back of the main liquid cooling plate 2 to prevent the generation of condensed water or the flow into the box 1. During the heat dissipation process, the coolant is transported to the internal circulation cooling pipeline loop of the main liquid cooling plate 2.

[0058] Due to the adoption of the above technical solution, the liquid-cooled high-pressure box of this embodiment has the following beneficial effects:

[0059] The liquid-cooled high-voltage box provided by the utility model can directly and effectively transfer the heat from the insulating and thermally conductive liquid or colloid to the main liquid cold plate 2 for heat dissipation by placing electronic components in the sealing box 3, and then injecting a liquid or colloid with insulating and thermal conductivity into the sealing box 3, and then combining the box body 1 with the main liquid cold plate 2 as the bottom plate, and at the same time combining with the auxiliary liquid cold plate 5 to further enhance the internal heat dissipation effect. The whole is equivalent to controlling the heat concentration first and then dissipating the heat together, which greatly improves the heat dissipation effect, and can continuously circulate the cooling, with strong sustainability.

[0060] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A liquid-cooled high-pressure box, characterized in that: include: A box, a main liquid cooling plate is arranged at the bottom of the box, an auxiliary liquid cooling plate is arranged inside the box, the auxiliary liquid cooling plate is detachably arranged on the inner side wall of the box and extends into the box; wherein the auxiliary liquid cooling plate comprises an auxiliary liquid cooling plate body and a mounting seat, the side wall of the box is provided with a mounting hole, the auxiliary liquid cooling plate body is inserted into the mounting hole, and the mounting seat is detachably arranged at the mounting hole; and A sealing box, wherein the sealing box is arranged on the main liquid cold plate, electronic components are arranged inside the sealing box, and the sealing box is used for filling liquid or colloid with insulating thermal conductivity.

2. The liquid-cooled high-pressure box according to claim 1, characterized in that: A waterproof plate is arranged outside the main liquid cooling plate.

3. The liquid-cooled high-pressure box according to claim 1, characterized in that: The sealing box uses the main liquid cooling plate as a bottom plate, and the sealing box is sealed and connected to the main liquid cooling plate.

4. The liquid-cooled high-pressure box according to claim 1, characterized in that: There are a plurality of the sealing boxes, and each of the sealing boxes is provided with one or more electronic components.

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