An electric power storage device with heat dissipation function

Abstract

The utility model discloses a kind of electric power energy storage devices with heat dissipation function, it is related to heat dissipation cabinet technical field, comprising: heat dissipation cabinet, energy storage module being set to the heat dissipation cabinet inside, setting in the heat dissipation cabinet back, the electricity connection module of energy storage module, setting in the heat dissipation cabinet front cabinet door;The two side walls of the heat dissipation cabinet are equipped with first heat dissipation mechanism, the top of the heat dissipation cabinet is equipped with second heat dissipation mechanism, the bottom of the heat dissipation cabinet four corners is equipped with air inlet fan;The first heat dissipation mechanism includes: multiple vertical distribution in the heat dissipation cabinet two side walls on heat dissipation groove;Cover plate is hinged on the heat dissipation groove;Opening and closing control mechanism to control the cover plate opening and closing to shield or open the heat dissipation groove.The utility model can accurately control the effective ventilation area of the two sides and top of heat dissipation cabinet by controlling the cover plate opening and closing angle of first heat dissipation mechanism and the grid hole plate alignment degree of second heat dissipation mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation cabinet technology, specifically relating to an electric energy storage device with heat dissipation function. Background Technology

[0002] During the charging and discharging process, the energy storage modules inside a power storage device generate a significant amount of heat. If this heat cannot be dissipated effectively and promptly, the internal temperature of the device will continue to rise, leading to a series of serious problems, including but not limited to performance degradation of the energy storage modules, shortened cycle life, reduced charging and discharging efficiency, and in extreme cases, even thermal runaway, causing a safety accident. Therefore, an efficient and reliable heat dissipation design is crucial to ensuring the safe, stable, and long-term operation of power storage devices.

[0003] In existing technologies, to enhance the heat dissipation capacity of heat sinks, a common approach is to create fixed ventilation holes or louvers on the side walls, top, or bottom of the cabinet. These ventilation holes are typically kept open, allowing natural air convection or forced ventilation via fans to remove heat.

[0004] Normally open ventilation holes can harbor dust, impurities, and even moisture, especially outdoors or in humid environments, as they provide a pathway for these substances to enter the cabinet. Dust buildup can clog air ducts and cover the surfaces of heat-generating components, severely degrading heat dissipation. Moisture intrusion can cause electrical short circuits, corrosion, and other problems, threatening equipment safety.

[0005] Therefore, a heat dissipation mechanism with actively controllable opening and closing is needed, which can fully open the ventilation channel when a large heat dissipation capacity is required, and close or reduce the opening when the heat dissipation demand is low or the external environment is harsh, such as sandstorms, rain, or snow. This will significantly improve the dustproof and waterproof capabilities of the device while ensuring heat dissipation efficiency. Utility Model Content

[0006] To overcome the problems existing in the background art, this utility model provides an electric energy storage device with heat dissipation function.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a power energy storage device with heat dissipation function, comprising: a heat dissipation cabinet, and an energy storage module disposed inside the heat dissipation cabinet.

[0008] The power connection module, which is located on the back of the heat dissipation cabinet and connected to the energy storage module, is located on the cabinet door on the front of the heat dissipation cabinet.

[0009] The heat dissipation cabinet has a first heat dissipation mechanism on both side walls and a second heat dissipation mechanism on the top.

[0010] The bottom four corners of the heat sink are equipped with air intake fans; the first heat dissipation mechanism includes: a plurality of heat dissipation slots vertically distributed on the two side walls of the heat sink; a cover plate hinged to the heat dissipation slots; and an opening and closing control mechanism for controlling the opening and closing of the cover plate to cover or open the heat dissipation slots.

[0011] Furthermore, mounting rings are provided on both sides above the heat dissipation groove, and a rotating shaft is rotatably mounted on the mounting ring, with the cover plate fixed to the side of the rotating shaft.

[0012] Furthermore, the opening and closing control mechanism includes:

[0013] A circular ring is disposed on the cover plate and located on the other side of the rotating shaft;

[0014] Pull the rope through the rings of each layer of the cover plate from bottom to top;

[0015] A metal ball is disposed on the pull rope, the diameter of the metal ball being larger than the inner diameter of the ring, and one metal ball is disposed on the pull rope below each ring;

[0016] The upper end of the pull rope passes through the top of the heat sink and is connected to the drive mechanism.

[0017] Furthermore, the drive mechanism includes: a geared motor disposed on the top of the heat sink, an encoder disposed on the output shaft of the geared motor, and a winding wheel connected to the output shaft and used for winding the pull rope.

[0018] Furthermore, the second heat dissipation mechanism includes:

[0019] A heat dissipation hole array is disposed at the top of the heat dissipation cabinet;

[0020] Slides are provided on both sides of the heat dissipation hole array;

[0021] A perforated plate is horizontally slidably disposed between the grooves, and the holes of the perforated plate can be aligned with the holes of the heat dissipation hole array to form through holes or be misaligned and closed.

[0022] A support plate is mounted above the slide groove;

[0023] An electric push rod is mounted on the support plate, and the piston rod of the electric push rod is connected to the grid plate via a connecting block.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] 1. This utility model can precisely control the effective ventilation area on both sides and top of the heat dissipation cabinet by controlling the opening and closing angle of the cover plate of the first heat dissipation mechanism and the alignment degree of the grid plate of the second heat dissipation mechanism. This allows the device to dynamically adjust the heat dissipation intensity according to the real-time heat generation of the internal energy storage module and the external ambient temperature: under high load and high temperature environments, the opening degree is increased to provide maximum ventilation, ensuring that heat is dissipated in time, effectively preventing the equipment from overheating, protecting the energy storage module, and extending its service life.

[0026] In low-load, low-temperature environments, reducing or closing the opening significantly reduces unnecessary heat loss and prevents the cabinet temperature from becoming too low. This is especially beneficial for temperature-sensitive batteries such as lithium-ion batteries, improving overall energy efficiency and helping to maintain the battery within a better operating temperature range, further enhancing its performance and lifespan.

[0027] 2. When heat dissipation requirements are low or the external environment is harsh, such as sandstorms, rain, snow, high humidity, or salt spray, the heat dissipation vent cover can be closed, and the top perforated plate can be adjusted to a completely offset and sealed state. This completely blocks dust, moisture, rainwater, debris, etc., from entering the cabinet through the heat dissipation holes. Even when partial heat dissipation is required, the opening size can be controlled to ensure basic heat dissipation while significantly reducing the intrusion of harmful substances. Attached Figure Description

[0028] Figure 1 A schematic diagram of a power storage device with heat dissipation function;

[0029] Figure 2 This is a schematic diagram of the internal structure of an electric energy storage device with heat dissipation function.

[0030] Figure 3 This is a schematic diagram of the cover plate.

[0031] In the diagram: 1. Heat sink 2. Power connection module 3. Cabinet door 4. Observation window 5. Air intake fan 6. Heat dissipation slot 7. Cover plate 8. Mounting ring 9. Rotating shaft 10. Ring 11. Pull rope 12. Metal ball 13. Gear motor 14. Encoder 15. Winding wheel 16. Heat dissipation hole array 17. Slide 18. Grid plate 19. Support plate 20. Electric push rod 21. Connecting block 21. Detailed Implementation

[0032] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below to facilitate understanding by those skilled in the art.

[0033] Please see Figures 1 to 3 This embodiment provides a power storage device with heat dissipation function, including: a heat dissipation cabinet 1, which has a metal frame structure and is lined with a heat insulation layer inside;

[0034] The energy storage module located inside the heat sink 1, in this embodiment, is composed of multiple lithium-ion batteries connected in series and fixed on the internal support of the heat sink 1. The energy storage module is not shown in the diagram.

[0035] The power connection module 2, which is located on the back of the heat sink 1 and connected to the energy storage module, includes a DC bus and a battery management system (BMS) interface.

[0036] The cabinet door 3 is located on the front of the heat dissipation cabinet 1; the cabinet door 3 has an observation window 4.

[0037] The heat dissipation cabinet 1 has a first heat dissipation mechanism on both side walls and a second heat dissipation mechanism on the top.

[0038] The bottom four corners of the heat sink 1 are equipped with air intake fans 5; the air intake fans 5 are existing axial flow air intake fans 5, with the fan blades covered with dustproof nets.

[0039] The first heat dissipation mechanism includes: a plurality of heat dissipation slots 6 vertically distributed on both sides of the heat dissipation cabinet 1; a cover plate 7 hinged to the heat dissipation slots 6; and an opening and closing control mechanism for controlling the opening and closing of the cover plate 7 to cover or open the heat dissipation slots 6.

[0040] Mounting rings 8 are provided on both sides above the heat dissipation slot 6. The mounting rings 8 are stainless steel rings and are welded to the inner wall of the heat dissipation cabinet 1.

[0041] A rotating shaft 9 is rotatably mounted on the mounting ring 8, and the cover plate 7 is fixed to the side of the rotating shaft 9. The rotating shaft 9 and the mounting ring 8 are connected by a bearing.

[0042] The opening and closing control mechanism includes:

[0043] A circular ring 10 is disposed on the cover plate 7 and located on the other side of the rotating shaft 9;

[0044] The pull rope 11 passes through the rings 10 of each layer of the cover plate 7 from bottom to top;

[0045] A metal ball 12 is disposed on the pull rope 11. The diameter of the metal ball 12 is larger than the inner diameter of the ring 10, and a metal ball 12 is disposed on the pull rope 11 below each ring 10. The metal ball 12 can lock the ring 10 and pull the cover plate 7 when it is swung upward, and can drive the pull rope 11 downward to avoid tangling and knotting when it is swung downward.

[0046] The upper end of the pull rope 11 extends out of the top of the heat sink 1 and is connected to the drive mechanism.

[0047] The drive mechanism includes: a geared motor 13 mounted on the top of the heat sink 1, an encoder 14 mounted on the output shaft of the geared motor 13, and a winding reel 15 connected to the output shaft and used for winding the pull rope 11. The geared motor 13 provides high torque (15 N·m) and low speed output, and the encoder 14 (1024 PPR) monitors the rotation angle in real time.

[0048] The encoder 14 provides real-time feedback on the motor rotation angle, which the controller converts into the opening angle of the cover plate 7. For example, 90° corresponds to the winding wheel 15 rotating 2 times to dynamically adjust to the target opening angle.

[0049] The second heat dissipation mechanism includes:

[0050] A heat dissipation hole array 16 is disposed at the top of the heat dissipation cabinet 1; the heat dissipation hole array 16 is a 10×13 circular hole array with a hole diameter of 10mm and a hole spacing of 15mm;

[0051] Slides 17 are provided on both sides of the heat dissipation hole array 16;

[0052] A perforated plate 18 is horizontally slidably disposed between the grooves 17. The holes of the perforated plate 18 can be aligned with the holes of the heat dissipation hole array 16 to form through holes or be misaligned and closed. The perforated plate 18 has the same parameters as the heat dissipation hole array 16.

[0053] Support plate 19 is mounted above the slide groove 17; support plate 19 spans across the slide groove 17.

[0054] An electric actuator 20 is mounted on the support plate 19, and its piston rod is connected to the perforated plate 18 via a connecting block 21. The electric actuator 20 has a stroke of 7 mm and a thrust of 200 N.

[0055] This utility model also includes a controller, which is an STM32F407 industrial-grade microcontroller.

[0056] The functional modules include: temperature acquisition interface (4 channels), humidity / dust sensor interface (2 channels), motor drive PWM output (3 channels), encoder 14-pulse counting module, and push rod position feedback ADC;

[0057] Sensor layout:

[0058] Temperature monitoring: One PT100 temperature sensor each at the top, middle, and bottom of heat sink 1; two NTC thermistors are mounted on the surface of the energy storage module.

[0059] Environmental monitoring: External temperature and humidity sensor (SHT35) on top of cabinet, dust sensor (laser scattering type) inside cabinet;

[0060] Actuator drive unit: geared motor 13 drive interface (PWM control), electric push rod 20 position feedback interface (ADC acquires potentiometer signal), encoder 14 pulse counting module (monitors cover plate 7 opening degree), intake fan 5 speed control circuit;

[0061] Multi-mode control logic (data is for example only):

[0062] (1) Standby mode

[0063] Conditions: Temperature ≤35℃ and humidity ≤80%, dust ≤100μg / m³

[0064] action:

[0065] When cover plate 7 is closed, the motor reverses to the zero position;

[0066] The grid plate 18 is misaligned and closed, and the push rod retracts 7mm;

[0067] The intake fan operates at low speed, 10% of its maximum speed.

[0068] (2) Conventional heat dissipation mode

[0069] Conditions: 35℃ < Temperature < 45℃

[0070] action:

[0071] When cover 7 is opened to 30°, the motor rotates forward, and encoder 14 is verified.

[0072] The grid plate 18 slides to 30% alignment, and the push rod extends 3.5mm;

[0073] The intake fan operates at medium speed (50% of its maximum speed).

[0074] (3) Strong heat dissipation mode

[0075] Conditions: Temperature ≥ 45℃

[0076] action:

[0077] Cover plate 7 fully opens to 90°;

[0078] The perforated plates are 18100% aligned, and the push rod extends 7mm.

[0079] The intake fan is running at full speed (100% RPM).

[0080] (4) Protective closed mode

[0081] Conditions: Humidity > 80% or dust > 100 μg / m³

[0082] action:

[0083] Emergency closing of the cover 7, completed within 0.5 seconds;

[0084] The perforated plate 18 is completely misaligned and closed.

[0085] Switch to internal air circulation mode, and set the intake fan to low speed (5).

[0086] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An electric energy storage device with heat dissipation function, comprising: A heat dissipation cabinet (1), an energy storage module disposed inside the heat dissipation cabinet (1), a power connection module (2) connected to the energy storage module disposed on the back of the heat dissipation cabinet (1), and a cabinet door (3) disposed on the front of the heat dissipation cabinet (1); characterized in that: the two side walls of the heat dissipation cabinet (1) are provided with a first heat dissipation mechanism, the top of the heat dissipation cabinet (1) is provided with a second heat dissipation mechanism, and the four corners of the bottom of the heat dissipation cabinet (1) are provided with air intake fans (5); the first heat dissipation mechanism includes: a plurality of heat dissipation grooves (6) vertically distributed on the two side walls of the heat dissipation cabinet (1); a cover plate (7) hinged to the heat dissipation groove (6); and an opening and closing control mechanism for controlling the opening and closing of the cover plate (7) to cover or open the heat dissipation groove (6).

2. The power storage device with heat dissipation function according to claim 1, characterized in that, Mounting rings (8) are provided on both sides above the heat dissipation groove (6). A rotating shaft (9) is rotatably mounted on the mounting ring (8). The cover plate (7) is fixed to the side of the rotating shaft (9).

3. The power storage device according to claim 2, characterized in that, The opening and closing control mechanism includes: a ring (10) disposed on the cover plate (7) and located on the other side of the rotating shaft (9); a pull rope (11) passing through the rings (10) of each layer of the cover plate (7) from bottom to top; and a metal ball (12) disposed on the pull rope (11), wherein the diameter of the metal ball (12) is larger than the inner diameter of the ring (10), and one metal ball (12) is disposed on the pull rope (11) below each ring (10). The upper end of the pull rope (11) passes through the top of the heat sink (1) and is connected to the drive mechanism.

4. The power storage device with heat dissipation function according to claim 3, characterized in that, The drive mechanism includes: a geared motor (13) disposed on the top of the heat sink (1), an encoder (14) disposed on the output shaft of the geared motor (13), and a winding wheel (15) connected to the output shaft and used for winding the pull rope (11).

5. A power storage device with heat dissipation function according to claim 1, characterized in that, The second heat dissipation mechanism includes: a heat dissipation hole array (16) disposed at the top of the heat dissipation cabinet (1); a slide groove (17) disposed on both sides of the heat dissipation hole array (16); a grid plate (18) horizontally slidably disposed between the slide grooves (17), wherein the holes of the grid plate (18) can be aligned with the holes of the heat dissipation hole array (16) by sliding to form through holes or be misaligned and closed; a support plate (19) mounted above the slide grooves (17); and an electric push rod (20) disposed on the support plate (19), wherein the piston rod of the electric push rod (20) is connected to the grid plate (18) through a connecting block (21).

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