Liquid-cooled energy storage unit

Abstract

The utility model relates to the technical field of energy storage units, in particular to a liquid-cooled energy storage unit, which comprises a unit bottom plate, a unit top plate and an inner cavity, a first fixing plate is arranged between the unit bottom plate and the unit top plate, an air inlet pipe is arranged on the first fixing plate, and the inner cavity comprises an air mixing cavity, a coil pipe cavity and a fan cavity. The coil pipe cavity is used for storing an energy storage battery and dissipating heat of the energy storage battery through the liquid cooling coil pipe, and the fan cavity exhausts air after heat exchange by generating negative pressure suction force. According to the utility model, the cylindrical battery jar formed by the liquid cooling coil pipe is used as a storage place of the energy storage battery, so that the energy storage battery can be stably placed, and the spiral liquid cooling coil pipe surrounds the periphery of the energy storage battery without a dead angle for water-cooling heat dissipation, so that the heat dissipation energy efficiency reaches the peak. And the contact area with air is multiplied through the spiral liquid cooling coil pipe, and heat is taken away from cold air brought by the outside in cooperation with the exhaust fan, so that the heat dissipation efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage units, in particular to a liquid-cooled energy storage unit. Background Art

[0002] The energy storage liquid cooling unit is an advanced energy storage technology designed to improve the reliability, flexibility and efficiency of the power grid. It combines a liquid cooling system with battery energy storage technology and has the following features and advantages: The liquid-cooled energy storage unit uses an advanced liquid cooling system to keep the temperature of the energy storage device within an appropriate range. This helps to improve the performance and life of the battery, as the importance of temperature control to the battery is self-evident. However, the liquid-cooled energy storage unit in the prior art generally adopts a liquid cooling refrigeration method using fins or serpentine ring tubes, which only allows contact with the outside of the battery, resulting in an uneven temperature difference between the inside and outside of the battery, which affects the service life of the energy storage battery. In view of this, we propose a liquid-cooled energy storage unit. Utility Model Content

[0003] In order to make up for the above deficiencies, the utility model provides a liquid-cooled energy storage unit.

[0004] The technical solution of the utility model is:

[0005] A liquid-cooled energy storage unit, comprising a unit bottom plate and a unit top plate, wherein one side of the unit top plate is provided with a rain and snow protection eaves, a first fixing plate is provided between the unit bottom plate and the unit top plate, an air inlet duct is provided on the first fixing plate, a mechanical equipment box is provided above the unit bottom plate, and further comprising:

[0006] The inner cavity includes a wind mixing cavity, a coil cavity and a fan cavity. The wind mixing cavity mixes outdoor air with the wind entering from the air inlet pipe. The coil cavity is used to store energy storage batteries and dissipate heat for the energy storage batteries through liquid cooling coils. The fan cavity discharges the wind after heat exchange by generating negative pressure suction.

[0007] Preferably, the wind mixing chamber includes a second fixing plate, a plurality of air inlet holes are provided on the second fixing plate, and the second fixing plate is located on both sides and opposite end faces of the air inlet pipe.

[0008] Preferably, outdoor air enters the wind mixing chamber from the second fixed plate at the side, and the wind mixed in the wind mixing chamber enters the coil chamber from the second fixed plate located at the end surface.

[0009] Preferably, the coil cavity includes a liquid cooling coil, a third fixed plate and a fourth fixed plate, and there are multiple groups of liquid cooling coils, each group of liquid cooling coils is fin-shaped and has a multi-layer spiral hollow structure arranged in the coil cavity and each group is connected end to end, and the liquid cooling coil is filled with cooling liquid, and a booster pump is connected to any group of liquid cooling coils to form a closed passage for all liquid cooling coils, and the booster pump is used to provide power for the cooling liquid in the liquid cooling coil so that the cooling liquid circulates in the liquid cooling coil.

[0010] Preferably, the third fixing plate is provided with a plurality of air inlet holes and the third fixing plate is parallel to the second fixing plate, the fourth fixing plate is non-porous and is located on both sides of the second fixing plate, and the fourth fixing plate is perpendicular to the second fixing plate.

[0011] Preferably, the fan chamber includes a fifth fixing plate, an exhaust fan and a sixth fixing plate, the fifth fixing plate is parallel to the third fixing plate, and the sixth fixing plate is located on both sides of the third fixing plate and is perpendicular to the third fixing plate.

[0012] Preferably, a motor is provided on one side of the third fixing plate, and the motor drives the exhaust fan to rotate to generate negative pressure suction to exhaust the air after heat exchange.

[0013] Preferably, a cylindrical battery slot is formed at the center of each group of the liquid cooling coils, and the energy storage batteries are vertically stacked in each battery slot.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model uses a cylindrical battery slot formed by a liquid cooling coil as a storage place for energy storage batteries, which can not only stably place the energy storage batteries, but also allows the spiral liquid cooling coil to surround the energy storage batteries without dead angles for water cooling and heat dissipation, so that the heat dissipation energy efficiency reaches the peak. In addition, the spiral liquid cooling coil increases the contact area with the air exponentially, and cooperates with the exhaust fan to bring in cold air from the outside to take away the heat, so that the heat dissipation efficiency is greatly improved. In addition, the heat dissipation of the battery can be more uniform due to the heat dissipation from all sides of the battery pack, which increases the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the utility model;

[0018] Figure 3 This is the second cross-sectional view of the utility model;

[0019] Figure 4 It is a schematic diagram of the partial structure disassembly of the utility model.

[0020] In the figure: 1. Unit bottom plate; 2. Rain and snow protection eaves; 3. Unit top plate; 4. First fixed plate; 5. Air inlet duct; 6. Air mixing chamber; 61. Second fixed plate; 7. Coil chamber; 71. Liquid cooling coil; 711. Battery slot; 72. Third fixed plate; 73. Fourth fixed plate; 8. Fan chamber; 81. Fifth fixed plate; 82. Motor; 83. Exhaust fan; 84. Sixth fixed plate; 9. Mechanical equipment box; 10. Energy storage battery. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] See also Figure 1-4 The utility model describes the above technical solution in detail through the following embodiments:

[0024] A liquid-cooled energy storage unit includes a unit bottom plate 1 and a unit top plate 3, a rain and snow proof eaves 2 is provided on one side of the unit top plate 3, a first fixing plate 4 is provided between the unit bottom plate 1 and the unit top plate 3, an air inlet duct 5 is provided on the first fixing plate 4, the unit top plate 3 is fixedly connected to the rain and snow proof eaves 2, the rain and snow proof eaves 2 prevent rain and snow from entering the air inlet duct 5, a mechanical equipment box 9 is provided above the unit bottom plate 1, a controller and some electrical components are placed in the mechanical equipment box 9, and further includes:

[0025] The inner cavity includes a wind mixing cavity 6, a coil cavity 7 and a fan cavity 8. The wind mixing cavity 6 mixes the outdoor air with the wind entering from the air inlet pipe 5. The coil cavity 7 is used to store the energy storage battery 10 and dissipate heat for the energy storage battery 10 through the liquid cooling coil 71. The fan cavity 8 discharges the wind after heat exchange by generating negative pressure suction. In this embodiment, a cylindrical energy storage battery 10 is applicable.

[0026] The wind mixing chamber 6 includes a second fixing plate 61, which is provided with a plurality of air inlet holes. The second fixing plate 61 is located on both sides and the opposite end faces of the air inlet pipe 5. The first fixing plate 4 is fixedly connected to the second fixing plate 61, and the air inlet pipe 5 is fixedly connected to the outside of the first fixing plate 4. Outdoor air enters the wind mixing chamber 6 from the second fixing plate 61 at the side, and the air mixed in the wind mixing chamber 6 enters the coil chamber 7 from the second fixing plate 61 at the end face.

[0027] In this embodiment, the air inlet pipe 5 can be connected to the refrigeration room through a pipeline, and cold air can be input through an air conditioner or other refrigeration equipment to mix and enter the air mixing chamber 6. When the outdoor temperature is not cold enough, manual intervention is performed to dissipate heat.

[0028] The coil cavity 7 includes a liquid cooling coil 71, a third fixed plate 72 and a fourth fixed plate 73. There are multiple groups of liquid cooling coils 71. Each group of liquid cooling coils 71 is a spiral hollow structure and each group is connected end to end. The liquid cooling coils 71 are filled with cooling liquid. A booster pump is connected to any group of liquid cooling coils 71 to form a closed passage for all liquid cooling coils 71. The booster pump is used to provide power for the cooling liquid in the liquid cooling coils 71 so that the cooling liquid circulates in the liquid cooling coils 71. The third fixed plate 72 is provided with multiple air inlet holes and the third fixed plate 72 is parallel to the second fixed plate 61. The fourth fixed plate 73 is non-porous and is located on both sides of the second fixed plate 61. The fourth fixed plate 73 is perpendicular to the second fixed plate 61. A cylindrical battery slot 711 is formed at the center of each group of liquid cooling coils 71, and the energy storage batteries 10 are vertically stacked in each battery slot 711.

[0029] The inner diameter of the battery slot 711 is matched with the outer diameter of the energy storage battery 10 .

[0030] The cylindrical battery slot 711 formed by the liquid cooling coil 71 is used as a storage place for the energy storage battery 10. It can not only stably place the energy storage battery 10, but also make the spiral liquid cooling coil 71 surround the energy storage battery 10 without dead angles to dissipate heat, so that the heat dissipation efficiency reaches the peak. In addition, since the heat is dissipated from all sides of the battery pack, the heat dissipation of the battery can be more uniform, which increases the service life of the battery.

[0031] The fan chamber 8 includes a fifth fixing plate 81, an exhaust fan 83 and a sixth fixing plate 84. The fifth fixing plate 81 is parallel to the third fixing plate 72, and the sixth fixing plate 84 is located on both sides of the third fixing plate 72 and is perpendicular to the third fixing plate 72. The fifth fixing plate 81 acts as a protective net. A motor 82 is provided on one side of the third fixing plate 72, and the motor 82 drives the exhaust fan 83 to rotate to generate negative pressure suction to discharge the air after heat exchange. The motor 82 is fixedly connected to one side of the third fixing plate 72, and the output shaft of the motor 82 is fixedly connected to the exhaust fan 83 through a coupling.

[0032] The unit top plate 3 is fixedly connected to the first fixing plate 4, the second fixing plate 61, the third fixing plate 72, the fourth fixing plate 73, the fifth fixing plate 81 and the sixth fixing plate 84, the unit bottom plate 1 is fixedly connected to the first fixing plate 4, the second fixing plate 61, the third fixing plate 72, the fourth fixing plate 73, the fifth fixing plate 81 and the sixth fixing plate 84, one end of the fourth fixing plate 73 is fixedly connected to the second fixing plate 61, and the other end is fixedly connected to the third fixing plate 72, one end of the sixth fixing plate 84 is fixedly connected to the fifth fixing plate 81, and the other end is fixedly connected to the third fixing plate 72.

[0033] When the energy storage battery 10 is storing energy, the booster pump drives the coolant to circulate along each group of liquid cooling coils 71, taking away the heat generated by the energy storage battery 10 and circulating continuously, and the outdoor cold air is delivered to the air mixing chamber 6 through the air inlet holes on the surface of the second fixed plate 61. When the outdoor air temperature is high (in summer), the valve on the air inlet pipe 5 is opened, and the cold air in the refrigeration room can be input and mixed with the outdoor air. The motor 82 drives the exhaust fan 83 to rotate quickly to exhaust air outward. The cold air enters the coil cavity 7 under the action of the pressure difference. The gas fully contacts the liquid cooling coil 71 in the coil cavity 7, taking away the heat of the coolant and the energy storage battery 10. The fourth fixed plates 73 on both sides of the coil cavity 7 are non-porous, thereby limiting the airflow to move only from left to right. The exhaust fan 83 strengthens the air flow and enhances the heat exchange of the liquid cooling coil 71. This air intake mechanism can improve the unit performance coefficient by 20% to 40%.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A liquid-cooled energy storage unit, comprising a unit bottom plate (1) and a unit top plate (3), wherein a rain and snow-proof overhang (2) is provided on one side of the unit top plate (3), a first fixing plate (4) is provided between the unit bottom plate (1) and the unit top plate (3), an air inlet duct (5) is provided on the first fixing plate (4), and a mechanical equipment box (9) is provided above the unit bottom plate (1), characterized in that: Also includes: An inner cavity, the inner cavity comprising an air mixing cavity (6), a coil cavity (7) and a fan cavity (8), the air mixing cavity (6) mixing outdoor air with the air entering from the air inlet pipe (5), the coil cavity (7) being used to store the energy storage battery (10) and dissipate heat for the energy storage battery (10) through the liquid cooling coil (71), and the fan cavity (8) dissipating the air after heat exchange by generating negative pressure suction.

2. The liquid-cooled energy storage unit according to claim 1, characterized in that: The wind mixing chamber (6) comprises a second fixing plate (61), the second fixing plate (61) being provided with a plurality of air inlet holes, the second fixing plate (61) being located on both sides and opposite end surfaces of the air inlet pipe (5).

3. The liquid-cooled energy storage unit according to claim 2, characterized in that: Outdoor air enters the wind mixing chamber (6) from the second fixed plate (61) at the side, and the wind mixed in the wind mixing chamber (6) enters the coil chamber (7) from the second fixed plate (61) located at the end surface.

4. The liquid-cooled energy storage unit according to claim 3, characterized in that: The coil cavity (7) comprises a liquid cooling coil (71), a third fixing plate (72) and a fourth fixing plate (73); the liquid cooling coil (71) comprises a plurality of groups, each group of the liquid cooling coil (71) is a spiral hollow structure and each group is connected end to end; the liquid cooling coil (71) is filled with cooling liquid; any group of the liquid cooling coil (71) is connected to a booster pump to form a closed passage for all the liquid cooling coils (71); the booster pump is used to provide power for the cooling liquid in the liquid cooling coil (71) so that the cooling liquid circulates in the liquid cooling coil (71).

5. The liquid-cooled energy storage unit according to claim 4, characterized in that: The third fixing plate (72) is provided with a plurality of air inlet holes and the third fixing plate (72) is parallel to the second fixing plate (61); the fourth fixing plate (73) is hole-free and is located on both sides of the second fixing plate (61); the fourth fixing plate (73) is perpendicular to the second fixing plate (61).

6. The liquid-cooled energy storage unit according to claim 5, characterized in that: The fan chamber (8) comprises a fifth fixing plate (81), an exhaust fan (83) and a sixth fixing plate (84); the fifth fixing plate (81) is parallel to the third fixing plate (72); and the sixth fixing plate (84) is located on both sides of the third fixing plate (72) and is perpendicular to the third fixing plate (72).

7. The liquid-cooled energy storage unit according to claim 6, characterized in that: A motor (82) is provided on one side of the third fixing plate (72), and the motor (82) drives the exhaust fan (83) to rotate to generate negative pressure suction to exhaust the air after heat exchange.

8. The liquid-cooled energy storage unit according to claim 4, characterized in that: A cylindrical battery slot (711) is formed at the center of each group of the liquid cooling coils (71), and the energy storage batteries (10) are vertically stacked in each battery slot (711).

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