Multi-layer heat dissipation air duct mechanism, system and power supply equipment

Abstract

The utility model provides a multi-layer heat dissipation air duct mechanism, system and power supply equipment, the mechanism comprises a multi-layer heat dissipation air duct which is composed of an inverter air duct, a BMS air duct and a battery pack air duct in sequence from top to bottom in a shell, and the air outlet amount of the BMS air duct is communicated with the air inlet amount of the battery pack air duct; a plurality of layers of heat dissipation air channels are formed in the shell, an air inlet fan and an air outlet fan are arranged at the transverse opposite ends of the heat dissipation air channels, and air of the air inlet fan is blown into the inverter air channel and the BMS air channel to form parallel air channels. Heat dissipation ventilation enters the inverter air channel and the BMS air channel, the mode that the air channels share the fan is adopted, heat dissipation is conducted on a high-heat-flux area in a concentrated mode, the heat dissipation efficiency is improved, meanwhile, parallel air channels are formed between the inverter air channel and the battery pack air channel and between the BMS air channel and the battery pack air channel, the air channel ventilation area is increased, and the fan ventilation capacity is improved.

Description

Technical Field

[0001] The present application relates to the technical field of equipment heat dissipation, and in particular to a multi-layer heat dissipation duct mechanism, system and power supply equipment. Background Art

[0002] In recent years, outdoor power equipment has developed rapidly, and large capacity and high charge and discharge power have become the main competitive advantages. The realization of high charge and discharge power makes the battery pack and inverter heat up seriously, requiring fans to actively cool down. At the same time, the large capacity makes the battery pack and inverter larger and larger, and the fan installed on the body shell cannot take into account the heat dissipation of the battery pack and inverter.

[0003] In the related art, the heat dissipation of battery packs and inverters is often enhanced by increasing the number of fans. However, on the one hand, this solution increases the number of fans, which will increase the equipment cost, increase equipment noise, and increase energy loss. On the other hand, it also reduces the heat dissipation efficiency of the heat dissipation mechanism due to the setting of the air duct, and causes the problem of high heat dissipation cost of the power supply equipment. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a multi-layer heat dissipation duct mechanism, system and power supply equipment, which are used to solve the problems of low heat dissipation efficiency and high heat dissipation cost caused by the duct setting of the heat dissipation mechanism of the existing power supply equipment.

[0005] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present application provides a multi-layer heat dissipation air duct mechanism, including: a multi-layer heat dissipation air duct composed of an inverter air duct, a BMS air duct and a battery pack air duct from top to bottom in a shell, the air outlet volume of the BMS air duct is connected and interconnected with the air inlet volume of the battery pack air duct, and the multi-layer heat dissipation air duct is provided with an air intake fan and an air outlet fan at the lateral opposite ends, and the air volume of the air intake fan is respectively blown into the inverter air duct and the BMS air duct to form parallel air ducts.

[0006] In one embodiment of the present application, a ventilation gap is provided between the multi-layer heat dissipation air duct and the inner wall of the shell, and a first air volume generated by a large part of the ventilation area of ​​the intake fan enters the inverter air duct and is then discharged from the outlet fan, and a second air volume generated by a small part of the ventilation area of ​​the intake fan enters the BMS air duct, flows out to the ventilation gap, and is then sucked into the battery pack air duct until it flows to the outlet fan.

[0007] In one embodiment of the present application, a large portion of the ventilation area of ​​the exhaust fan faces the inverter air duct to extract heat discharged from the inverter air duct, and a small portion of the ventilation area of ​​the exhaust fan absorbs heat discharged from the battery pack air duct.

[0008] In one embodiment of the present application, an air inlet is provided on the shell wall facing the air inlet fan, and an air outlet is provided on the shell wall facing the air outlet fan.

[0009] In one embodiment of the present application, the air inlet is arranged opposite to the air intake fan with a ventilation gap in between, and the second air volume first flows into the ventilation gap and then flows back to the air intake fan through the ventilation gap.

[0010] In one embodiment of the present application, a sealed extended wind shield is provided between the outlet fan and the air outlet.

[0011] In one embodiment of the present application, an anti-backflow structure is provided between the air outlet and the air outlet fan and between the air inlet and the air inlet fan, respectively, and the anti-backflow structure is composed of vertically arranged louvers with adjustable openings.

[0012] In one embodiment of the present application, sound absorbing materials are provided on inner walls where the air inlet and the air outlet are respectively located.

[0013] In one embodiment of the present application, the air inlet and the air outlet are respectively rainproof structural windows, and the rainproof structural windows are formed by louver strips that are distributed in a transverse and inclined manner.

[0014] In one embodiment of the present application, the inverter air duct is a sealed rectifying air duct composed of the inverter layer shell and the top of the BMS layer shell, the BMS air duct is composed of the BMS layer shell and the top of the battery pack layer shell, and the battery pack air duct is composed of the battery pack layer shell alone.

[0015] In one embodiment of the present application, a BMS air inlet is provided at one end of the BMS layer shell close to the air intake fan, a sealed baffle is provided at the other end away from the air intake fan, and BMS air outlets are provided on both sides of the other end of the BMS layer shell.

[0016] In one embodiment of the present application, a battery pack air inlet is provided on the side wall of the battery pack layer shell near the bottom, and a battery pack air outlet is provided on the top of the battery pack layer shell near the air outlet.

[0017] The second aspect of the present application provides a multi-layer heat dissipation duct system, comprising: the above-mentioned multi-layer heat dissipation duct mechanism arranged in a shell, a temperature detection module, used to collect temperature data of the object to be measured in the shell; a load detection module, used to collect load data of the object to be measured in the shell; a fan control module, used to adjust the wind speed of the intake fan and the outlet fan according to the temperature data and the load data.

[0018] A third aspect of the present application provides a power supply device, including: adopting the above-mentioned multi-layer heat dissipation duct mechanism, or / and including the above-mentioned multi-layer heat dissipation duct system.

[0019] As described above, a technical solution of the multi-layer heat dissipation duct mechanism, system and power supply device described in the present application has the following beneficial effects:

[0020] Compared with large-volume battery packs and inverters, the present application cannot solve the heat dissipation problem of battery packs and inverters without increasing the number of fans. In the existing solution, increasing the number of fans will increase the heat dissipation cost, and at the same time, increase equipment noise and energy loss. In the present application, a multi-layer heat dissipation duct is formed from top to bottom in the shell by an inverter air duct, a BMS air duct and a battery pack air duct, so that the heat dissipation ventilation enters the inverter air duct and the BMS air duct respectively. By sharing fans in each air duct, the high heat flux density area is dissipated in a concentrated manner, thereby improving the heat dissipation efficiency. At the same time, parallel air ducts are formed between the inverter air duct and the BMS air duct and the battery pack air duct, thereby increasing the ventilation area of ​​the air duct and improving the fan ventilation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a principle framework diagram of a multi-layer heat dissipation duct system provided by the present application;

[0022] Figure 2 Shown is a structural diagram of a power supply device with a multi-layer heat dissipation air duct mechanism provided by the present application;

[0023] Figure 3 Shown is an overall structural diagram of a power supply device with a multi-layer heat dissipation duct mechanism provided by the present application;

[0024] Figure 4 Shown is a wind direction flow diagram of a power supply device with a multi-layer heat dissipation air duct mechanism provided by the present application;

[0025] Figure 5 Shown is a state diagram of a backflow prevention structure in a multi-layer heat dissipation air duct mechanism provided by the present application;

[0026] Figure 6 Shown is another state diagram of an anti-backflow structure in a multi-layer heat dissipation air duct mechanism provided by the present application.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 200-housing, 201-air inlet, 202-air outlet, 210-inverter, 211-inverter layer housing, 212-extended wind hood, 213-inverter air inlet, 214-inverter air outlet, 220-BMS, 221-BMS layer housing, 222-baffle, 223-BMS air inlet, 224-BMS air outlet, 230-battery pack, 231-battery pack layer housing, 232-battery pack air outlet, 233-battery pack air inlet, 104-intake fan, 105-exhaust fan, 203-fan bracket. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0030] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0031] See also Figure 2 , is a structural diagram of a power supply device with a multi-layer heat dissipation duct mechanism provided by the present application, which is described in detail as follows:

[0032] In the shell 200, a multi-layer heat dissipation air duct is formed from top to bottom by an inverter air duct, a BMS air duct and a battery pack air duct. The air outlet of the BMS air duct is connected to the air inlet of the battery pack air duct (i.e., connected). An intake fan 104 and an outlet fan 105 are provided at opposite ends of the multi-layer heat dissipation air duct. The air volume of the intake fan 104 is blown into the inverter air duct and the BMS air duct respectively to form parallel air ducts.

[0033] Among them, BMS, commonly known as the battery nanny or battery butler, is used to intelligently manage and maintain each battery unit, prevent the battery from overcharging and over-discharging, extend the battery life, and monitor the battery status.

[0034] Here, it should be noted that, in the shell 200, from top to bottom, in the absence of a reference coordinate system, multiple layers of heat dissipation ducts consisting of inverter air ducts, BMS air ducts and battery pack air ducts can also be arranged from top to bottom. In addition, when referring to the physical coordinate system, multiple layers of heat dissipation ducts consisting of inverter air ducts, BMS air ducts and battery pack air ducts are arranged from top to bottom in the shell.

[0035] Among them, no matter it is distributed from top to bottom or from bottom to top, the air outlet of the BMS air duct is connected with the air inlet of the battery pack air duct, and the air outlet of the BMS air duct can be input into the battery pack air duct through the pipeline as the air inlet of the battery pack air duct. Therefore, in this way, there may be no ventilation gap between the multi-layer heat dissipation air duct and the inner wall of the shell, but the air outlet of the BMS air duct can be re-discharged into the battery pack air duct through the sealed pipeline.

[0036] In other embodiments, the multi-layer heat dissipation air duct is provided with an intake fan 104 and an exhaust fan 105 at opposite ends laterally, that is, the air duct between the intake fan and the exhaust fan is determined to be perpendicular to the air duct from top to bottom, that is, it is arranged horizontally; in the present application, the multi-layer heat dissipation air duct is composed of an inverter air duct, a BMS air duct and a battery pack air duct from top to bottom in the shell, so that the heat dissipation ventilation enters the inverter air duct and the BMS air duct respectively, and the air ducts share fans to concentrate on the high heat flux density area to dissipate heat, thereby improving the heat dissipation efficiency. At the same time, parallel air ducts are formed between the inverter air duct and the BMS air duct and the battery pack air duct, thereby increasing the ventilation area of ​​the air duct and improving the fan ventilation capacity.

[0037] Optionally, in one embodiment, reference Figures 2 to 4 , see Figure 4 , which is a wind direction flow diagram of a power supply device with a multi-layer heat dissipation air duct mechanism provided by the present application, is described in detail as follows:

[0038] A ventilation gap is provided between the multi-layer heat dissipation air duct and the inner wall of the shell. A first air volume generated by a large ventilation area of ​​the intake fan enters the inverter air duct and is then discharged to the outlet fan. A second air volume generated by a small ventilation area of ​​the intake fan enters the BMS air duct, flows out to the ventilation gap, and is then sucked into the battery pack air duct until it flows to the outlet fan.

[0039] Specifically, a large part of the ventilation area of ​​the exhaust fan faces the inverter air duct to extract the heat discharged from the inverter air duct, and a small part of the ventilation area of ​​the exhaust fan absorbs the heat discharged from the battery pack air duct. It should also be noted that the exhaust fan only receives the air volume discharged from the inverter air duct and the battery pack air duct for heat dissipation.

[0040] For example, when the power supply device is started, the temperature detection module monitors the operating temperature of the device and feeds back the temperature data to the fan control module. The load detection module monitors the load of the device and feeds back the load data to the fan control module. The fan control module determines the speed of the fan according to the temperature data and the load data, and controls the fan group to adjust the fan to the corresponding speed.

[0041] The intake fan and the exhaust fan run simultaneously, sucking the air outside the device into the power supply device through the air intake vents;

[0042] In this embodiment, three quarters (i.e., a large portion) of the ventilation area of ​​the intake fan is located at the inverter layer (i.e., the inverter air duct), and the air is directly blown into the inverter layer, flows through the inverter, and then is discharged from the device through the exhaust fan;

[0043] One quarter (i.e., a small part) of the ventilation area of ​​the intake fan is located at the BMS layer (i.e., the BMS air duct). After being blown into the BMS layer by the intake fan, the air enters the ventilation gap between the sandwich heat dissipation air duct structure and the inner wall of the shell through the openings on the side wall of the BMS layer shell. Part of the air is sucked into the battery pack cavity through the openings on the battery pack shell for heat dissipation of the battery pack, and finally discharged from the device by the exhaust fan. Another part of the air is captured by the intake fan again and blown into the inverter layer or the BMS layer; at the same time, the exhaust fan can also suck in fresh air from the air inlet through the battery pack layer and the ventilation gap in turn.

[0044] Two-thirds of the ventilation area of ​​the exhaust fan is located at the inverter layer, extracting the air blown into the inverter layer by the intake fan and directly exhausting it from the power supply equipment.

[0045] One third of the ventilation area of ​​the exhaust fan is located at the battery pack layer (i.e., the battery pack air duct). The exhaust fan draws air from outside and inside the device through the openings in the side wall of the battery pack layer shell to cool the battery pack, and discharges the air heated by the battery pack out of the device through the air outlet.

[0046] In addition, it should be noted that the BMS layer and the battery pack layer (i.e.) can be merged into one layer to form a double-layer heat dissipation duct structure with the inverter layer, and the exhaust fan can be directly installed at the air outlet of the outer shell, and the fan and the double-layer heat dissipation duct structure can be connected through an external duct to form a closed duct.

[0047] In some embodiments, an air inlet 201 is provided on the shell wall facing the air intake fan, and an air outlet 202 is provided on the shell wall facing the air outlet fan. The air inlet and the air outlet are respectively rainproof structural windows, and the rainproof structural windows are formed by laterally inclined louvers. For example, densely distributed laterally inclined louvers can effectively prevent rainwater from flowing back into the equipment. The rainproof structural windows can achieve the purpose of ventilation and cooling while also playing a role of rain protection.

[0048] In some embodiments, a ventilation gap is provided between the air inlet 201 and the air intake fan 104, that is, for air suction, and the second air volume flows back to the air intake fan through the ventilation gap in turn. Figure 4 The air volume at the air inlet can directly enter the intake fan, or return to the intake fan after passing through the ventilation gap. At the same time, it can also be sucked into the battery pack through the BMS air duct and ventilation gap in turn by the suction fan, so that an air flow circulation can be formed.

[0049] In some embodiments, a sealed extension hood 212 is provided between the outlet fan 105 and the outlet 202. For example, the air volume sucked by the outlet fan is directly discharged to the outlet by sealing through the extension hood, avoiding mutual interference of ventilation air volume.

[0050] In this embodiment, the power supply equipment, i.e., the internal heating components of the outdoor power supply are mainly: inverter, BMS, and battery pack, among which the inverter generates the most heat, followed by the battery pack, and the BMS generates the least heat. The three components generate different heat and require different cooling air volumes. At the beginning of the design, the ventilation volume of each area is controlled by designing the intake fan, the exhaust fan, and the ventilation area of ​​each area.

[0051] The air intake fan and the air outlet fan form a parallel air duct through a sandwich heat dissipation air duct structure (ie, a multi-layer heat dissipation air duct mechanism), which indirectly realizes the parallel connection of the air intake and outlet fans, thereby increasing the ventilation area of ​​the air duct and improving the ventilation capacity of the fan.

[0052] The inverter layer forms a closed rectifier air duct through the inverter layer shell and the BMS layer shell top cover, which can control the blowing air volume of the air intake fan and the exhaust air volume of the air outlet fan in the inverter area, improve the air volume heat dissipation utilization rate, and improve the heat dissipation capacity;

[0053] The exhaust fan is connected to the air outlet vents of the outer shell through an extended wind cover installed on the sandwich heat dissipation duct structure, which can achieve the airtightness between the exhaust fan and the air outlet vents, prevent the fan air volume backflow caused by the gap between the fan and the vents, and improve the exhaust and heat dissipation capacity of the equipment;

[0054] The air inlet is arranged opposite to the air intake fan with a ventilation gap in between, and the second air volume first flows into the ventilation gap and then flows back to the air intake fan through the ventilation gap. For example, a ventilation gap is arranged between the side wall of the sandwich heat dissipation air duct structure and the inner side wall of the shell, so that gap ventilation can be achieved, ensuring that the air outlet fan extracts external cold air through the opening on the battery pack shell to dissipate heat for the battery pack;

[0055] See Figures 2 to 3 ,The power equipment mainly includes: housing, battery pack, inverter, BMS, fan pack, fan control module, temperature detection module, load detection module, and sandwich heat dissipation duct structure;

[0056] Ventilation holes (as air inlets and outlets) are opened on the left and right side walls of the shell, and the battery pack, inverter, BMS, fan group, fan control module, temperature detection module, load detection module, and multi-layer heat dissipation duct mechanism are installed inside the shell;

[0057] The temperature detection module is used to monitor the temperature of the components in the module and feed back the temperature data to the fan control module;

[0058] The load detection module is used to monitor and control the equipment load and feed back the load data to the fan control module;

[0059] The fan control module determines the speed of the fan group according to the temperature data fed back by the temperature detection module and the load data fed back by the load detection module, and controls the fan to adjust to the corresponding speed;

[0060] In other embodiments, the inverter air duct is composed of the inverter layer shell and the top of the BMS layer shell to form a sealed rectifier air duct, the BMS air duct is composed of the BMS layer shell and the top of the battery pack layer shell, and the battery pack air duct is composed of the battery pack layer shell alone.

[0061] In other embodiments, a BMS air inlet 223 is provided at one end of the BMS layer shell close to the air intake fan, a sealed baffle 222 is provided at the other end away from the air intake fan, and BMS air outlets 224 are provided on both sides of the other end of the BMS layer shell.

[0062] In other embodiments, a battery pack air inlet 232 is provided on the side wall of the battery pack layer shell 231 near the bottom, and a battery pack air outlet 233 is provided on the top of the battery pack layer shell 231 near the air outlet.

[0063] Specifically, the multiple heat dissipation mechanisms are, from top to bottom, an inverter layer, a BMS layer, and a battery pack layer, respectively placing an inverter 210, a BMS 220, and a battery pack 230; the inverter air duct is composed of an inverter layer shell 211 and a BMS layer shell 221 upper cover, such as Figure 3 As shown, the inverter air duct is composed of an inverter air inlet 213 and an inverter air outlet 214, the inverter 210 is arranged in the inverter air duct, the BMS air duct is composed of a BMS layer shell 221 and a battery layer shell 231 upper cover, and the battery layer air duct is composed of a battery layer shell 231 assembled alone;

[0064] The multi-layer heat dissipation duct structure (i.e., sandwich heat dissipation duct structure) has a certain gap between the structure and the inner wall of the shell for ventilation in this embodiment. A set of fans are installed on the left and right sides of the duct structure, which are an air intake fan and an air outlet fan, respectively. The air outlet fan is covered with an extended wind shield 212 installed on the sandwich heat dissipation duct, and the extended wind shield is connected to the ventilation hole at the air outlet of the shell outwardly.

[0065] Optionally, the left side wall of the inverter layer housing is provided with a rectangular ventilation hole facing the fan for ventilation. The top cover of the BMS layer housing is provided with a rectangular square hole on the left side through which the fan can pass, and the left side wall is provided with a rectangular ventilation hole facing the fan for ventilation and a fan bracket 203 is provided for fixing the fan;

[0066] Optionally, the right side wall of the inverter layer shell is provided with a rectangular ventilation hole facing the fan for ventilation. A rectangular square hole through which the fan can pass is provided on the right side of the top cover of the BMS layer shell, and a rectangular ventilation hole facing the fan is provided on the right side wall for ventilation, and a baffle 222 is provided inside to divide the BMS layer into two and seal the BMS air duct. A large rectangular hole is provided on the right side of the top cover above the battery pack layer to connect the battery pack layer with the right side of the BMS as an air outlet for the battery pack layer, and a bracket for installing a fan is reserved on the far right side of the top cover;

[0067] Optionally, a rectangular square hole is opened on the left side of the front and rear side walls of the BMS layer shell as the BMS layer air outlet. A rectangular square hole is opened on the lower side walls of the battery layer shell as the battery layer air inlet;

[0068] In some embodiments, an anti-backflow structure is provided between the air outlet and the outlet fan and between the air inlet and the inlet fan. The anti-backflow structure is composed of vertically arranged louvers with adjustable openings (movable). The number of louvers formed by the anti-backflow structure is consistent with the number of fans, and the positions correspond to the positions of the fans. When a fan fails, the louver corresponding to the failed fan can be automatically closed under the action of wind pressure to prevent backflow. Figure 6 Specifically, when the fans are normal, the louvers open along the wind direction under the action of the fans sucking or blowing air, as shown in FIG. Figure 5 As shown; when a group of fans on the same side fails (or malfunctions), the shutters form a closed or semi-closed state under the suction force of another normal fan, preventing another group of normally working fans from sucking air through here and causing gas reflux. In this way, air reflux can be effectively prevented, greatly improving the heat dissipation efficiency.

[0069] In some embodiments, the inner wall where the air inlet and the air outlet are located is provided with sound-absorbing materials. For example, the air inlet and the air outlet of the power supply device are provided above and below the fan, so that the fan noise will not be directly transmitted to the outside world; at the same time, adding sound-absorbing materials on the side walls can further reduce the noise. In addition, since the fan air inlet and the air outlet are not directly facing the fan, water droplets from the outside will not splash into the device during use of the power supply device, which can also play a waterproof role.

[0070] In this embodiment, a multi-layer heat dissipation duct mechanism is provided in the power supply device; wherein, the air intake fan, the air outlet fan and each layer of the multi-layer heat dissipation duct mechanism are structurally connected; the multi-layer heat dissipation duct mechanism, the fan and the inverter form a rectifying duct structure based on the inverter duct; the exhaust structure relationship in which the air outlet fan is connected to the outer shell outlet through an extended wind cover; the zoned heat dissipation form formed by the multi-layer heat dissipation duct mechanism can realize heat dissipation by sharing a group of fans in multiple areas, reduce the number of fans, reduce costs, and reduce equipment noise; the rectifying duct formed by the structure can rectify the air volume to the high heat consumption area, thereby improving the utilization rate of the heat dissipation air volume; in addition, the exhaust structure formed by the structure can effectively prevent exhaust air from flowing back, thereby improving the exhaust heat dissipation efficiency.

[0071] See also Figure 1 , is a principle framework diagram of a multi-layer heat dissipation duct system 100 provided in this application, which is described in detail as follows:

[0072] It includes: the above-mentioned multi-layer heat dissipation duct mechanism, a temperature detection module 101, used to collect temperature data of the object to be measured in the shell; a load detection module 102, used to collect load data of the object to be measured in the shell; a fan control module 103, used to adjust the wind speed of the intake fan 104 and the exhaust fan 105 according to the temperature data and the load data.

[0073] Among them, it should be noted that the temperature detection module can be implemented by one or more temperature sensors. For example, it is best to have temperature sensors on each air duct and key components in the multi-layer heat dissipation air duct mechanism. In this way, relatively speaking, the air intake fan (one or more fans in the air intake fan group) and the air outlet fan (one or more fans in the air outlet fan group) can be specifically adjusted, and then, the purpose of accurately controlling the fan can be achieved. Similarly, the load detection module can also be implemented using multiple load detection units, so that the total load data or a single load data is determined. For example, the load detection unit is used to generate a load detection signal corresponding to the load connection state of the load power supply unit.

[0074] See also Figures 2 to 4 , showing a power supply device with a multi-layer heat dissipation duct mechanism provided by the present application, including: adopting the above-mentioned multi-layer heat dissipation duct mechanism, or / and, including the above-mentioned multi-layer heat dissipation duct system.

[0075] In this embodiment, the power supply equipment is cooled by the above-mentioned multi-layer heat dissipation duct mechanism. Since the multi-layer heat dissipation duct mechanism can realize heat dissipation by sharing a group of fans in multiple areas, the number of fans can be reduced, the cost can be reduced, and the equipment noise can be reduced. At the same time, the rectifying duct formed by the multi-layer heat dissipation duct mechanism can rectify the air volume to the high heat consumption area, thereby improving the utilization rate of the heat dissipation air volume. In addition, the exhaust structure formed by the multi-layer heat dissipation duct mechanism can effectively prevent the exhaust air from flowing back, thereby improving the exhaust heat dissipation efficiency.

[0076] It should be understood that in other embodiments, by implementing the acquisition of temperature data of the object to be measured in the device; and the acquisition of load data in the shell, the wind speed of the intake fan and the outlet fan is adjusted according to the temperature data and the load data, that is, the power gear of the fan is adjusted by controlling the rotation speed of the intake fan and the outlet fan. For example, the temperature data of the object to be measured is a little higher than the first preset threshold (that is, greater than or equal to the first preset threshold). In this way, the wind speed of the intake fan and the outlet fan can be increased to enhance the heat dissipation power. On the contrary, the temperature data of the object to be measured is a little lower than the preset threshold (that is, less than the first preset threshold). In this way, the wind speed of the intake fan and the outlet fan can be reduced to reduce the heat dissipation power. Similarly, the load data can also be combined. On the basis of the above, refer to the load data compared with the second preset threshold. If the load data is greater than or equal to the second preset threshold, the power of the fan (exhaust fan, intake fan) is increased; if the load data is less than the second preset threshold, the power of the fan (exhaust fan, intake fan) is reduced.

[0077] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A multi-layer heat dissipation duct mechanism, characterized in that: include: A multi-layer heat dissipation air duct is formed from top to bottom in the shell by an inverter air duct, a BMS air duct and a battery pack air duct. The air outlet of the BMS air duct is connected to the air inlet of the battery pack air duct. An air intake fan and an air outlet fan are arranged at opposite ends of the multi-layer heat dissipation air duct. The air volume of the air intake fan is respectively blown into the inverter air duct and the BMS air duct to form parallel air ducts.

2. The multi-layer heat dissipation duct structure according to claim 1, characterized in that: A ventilation gap is provided between the multi-layer heat dissipation air duct and the inner wall of the shell. A first air volume generated by a large ventilation area of ​​the intake fan enters the inverter air duct and is then discharged from the outlet fan. A second air volume generated by a small ventilation area of ​​the intake fan enters the BMS air duct, flows out to the ventilation gap, and is then sucked into the battery pack air duct until it flows to the outlet fan.

3. The multi-layer heat dissipation duct structure according to claim 2, characterized in that: A large part of the ventilation area of ​​the exhaust fan faces the inverter air duct to extract the heat discharged from the inverter air duct, and a small part of the ventilation area of ​​the exhaust fan absorbs the heat discharged from the battery pack air duct.

4. The multi-layer heat dissipation duct structure according to claim 2, characterized in that: The shell wall facing the air inlet fan is provided with an air inlet, and the shell wall facing the air outlet fan is provided with an air outlet.

5. The multi-layer heat dissipation duct structure according to claim 4, characterized in that: The air inlet is arranged opposite to the air intake fan with a ventilation gap in between, and the second air volume first flows into the ventilation gap and then flows back to the air intake fan through the ventilation gap.

6. The multi-layer heat dissipation duct structure according to claim 4, characterized in that: A sealed extended wind cover is provided between the air outlet fan and the air outlet.

7. The multi-layer heat dissipation duct structure according to claim 6, characterized in that: An anti-backflow structure is provided between the air outlet and the air outlet fan and between the air inlet and the air inlet fan, respectively. The anti-backflow structure is composed of vertically arranged louvers with adjustable openings.

8. The multi-layer heat dissipation duct structure according to claim 4, characterized in that: The inner walls where the air inlet and the air outlet are located are respectively provided with sound absorbing materials.

9. The multi-layer heat dissipation duct structure according to claim 4, characterized in that: The air inlet and the air outlet are respectively rainproof structural windows, and the rainproof structural windows are formed by louver strips that are distributed in a transverse and inclined manner.

10. The multi-layer heat dissipation duct structure according to claim 1, characterized in that: The inverter air duct is a sealed rectifier air duct composed of the inverter layer shell and the top of the BMS layer shell, the BMS air duct is composed of the BMS layer shell and the top of the battery pack layer shell, and the battery pack air duct is composed of the battery pack layer shell alone.

11. The multi-layer heat dissipation duct structure according to claim 10, characterized in that: The BMS layer shell is provided with a BMS air inlet at one end close to the air intake fan, a sealed baffle at the other end away from the air intake fan, and BMS air outlets are provided on both sides of the other end of the BMS layer shell.

12. The multi-layer heat dissipation duct mechanism according to claim 10 or 11, characterized in that: A battery pack air inlet is provided on the side wall of the battery pack layer shell near the bottom, and a battery pack air outlet is provided on the top of the battery pack layer shell near the air outlet.

13. A multi-layer heat dissipation duct system, characterized in that: It comprises a multi-layer heat dissipation duct mechanism as claimed in any one of claims 1 to 12 arranged in a shell; a temperature detection module for collecting temperature data of an object to be measured in the shell; A load detection module is used to collect load data of the object to be tested in the shell; a fan control module is used to adjust the wind speed of the intake fan and the exhaust fan according to the temperature data and the load data.

14. A power supply device, characterized in that: It includes adopting the multi-layer heat dissipation duct mechanism as described in any one of claims 1 to 12, or / and, it includes adopting the multi-layer heat dissipation duct system as described in claim 13.

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