A cyclic charging and discharging device

Abstract

The present invention discloses a circulating charging and discharging device, comprising: a multi-chamber cooling box, the top of which is provided with a heat dissipation duct, and a first chamber, a second chamber, and a third chamber provided inside, wherein the first chamber and the second chamber constitute an internal circulation temperature control channel; an exhaust fan and a blower fan are provided in the second chamber; the third chamber and the heat dissipation duct constitute an external circulation temperature control channel; a charging and discharging device, arranged in the second chamber, comprising a fixed frame, a movable frame, a lifting mechanism, and a detection power supply; an upper air duct is provided between the top plate of the fixed frame and the second chamber; the movable end of the lifting mechanism is connected to the movable frame, and the area between the movable frame and the bottom plate is a lower air duct, with an air supply fan provided at the bottom; a heat exchanger, arranged in the first chamber, for achieving heat exchange between the coolant in the heat exchanger and the air flowing through the heat exchange channel; and an inverter component, arranged in the third chamber, for maintaining normal operation of the device. The present invention has the beneficial effects of fast heat dissipation and low energy consumption.

Description

Technical Field

[0001] The present invention relates to a cyclic charging and discharging device, belonging to the technical field of multi-channel capacity division equipment for lithium batteries. Background Art

[0002] Existing integrated charging and discharging devices typically combine the power supply and mechanism into one unit. The mechanism constitutes the primary space within the device. During normal charging and discharging, the power supply and battery generate significant heat. Furthermore, cables are required to connect the power supply and battery, which also generates heat. The power supply probe also contacts the battery surface, creating contact resistance and generating heat. The sum of all this heat, known as system heat W1, is generated within the mechanism. If this heat is not rapidly dissipated and removed, the battery temperature will rise rapidly, affecting battery quality. The inverter component provides the necessary power for the device to operate properly. During normal charging and discharging, the inverter itself generates heat W2, typically W1≈W2. If the inverter heat W2 also exists within the mechanism, the mechanism must rapidly dissipate the combined heat of W1+W2, otherwise the battery temperature will rise excessively, affecting battery quality.

[0003] Conventional integrated charging and discharging equipment collects all the system heat W1+W2 for unified management, and then uniformly consumes the heat generated by the system to control the temperature rise of the battery inside the device. However, this structure requires unified management of all the heat of the device, which will result in high energy consumption in the temperature control process, long heat dissipation time, and affected heat dissipation effect. Summary of the Invention

[0004] In order to solve the problems of long heat dissipation time, high energy consumption and poor temperature control effect of existing charging and discharging equipment, the present invention proposes a charging and discharging equipment with two independent heat dissipation channels, fast heat dissipation, good heat dissipation effect and low energy consumption and cyclic heat dissipation.

[0005] The cyclic charging and discharging device of the present invention is characterized by comprising:

[0006] A multi-chamber cooling box, with a heat dissipation duct on the top, and a first chamber, a second chamber and a third chamber inside, and the first chamber is connected to the second chamber through an upper vent and a lower vent respectively, and the first chamber and the second chamber constitute an internal circulation temperature control channel; an exhaust fan is provided at the air inlet end of the upper vent in the second chamber, for sending air above the second chamber into the first chamber; a blower fan is provided at the air outlet end of the lower vent in the second chamber, for sending air below the first chamber into the second chamber; the third chamber is isolated from the first chamber and the second chamber respectively and is connected to the heat dissipation duct, and the third chamber and the heat dissipation duct constitute an external circulation temperature control channel;

[0007] The charging and discharging device is arranged in the second chamber and includes a fixed frame, a movable frame, a lifting mechanism and a detection power supply; the fixed frame has a top plate and a bottom plate that are parallel and opposite to each other; an upper air duct is provided between the top plate and the inner top of the second chamber, and the air outlet of the upper air duct extends to the air inlet of the exhaust fan; the lifting mechanism is arranged in the fixed frame, and its movable end is connected to a movable frame that can be raised and lowered in the fixed frame. The area between the movable frame and the bottom plate is the downwind duct, and the air inlet end of the downwind duct is located at the air outlet of the blower fan; an air supply fan is provided at the bottom of the movable frame, which is used to cause the air in the downwind duct to flow upward through the tray and then be transported to the upwind duct; the detection power supply is arranged at the inner top of the installation frame, and a detection probe is provided at the bottom of the detection power supply;

[0008] a heat exchanger disposed in the first chamber, the heat exchanger being in communication with the coolant supply device, and the heat exchanger having at least one heat exchange channel for achieving heat exchange between the coolant in the heat exchanger and the air flowing through the heat exchange channel;

[0009] And the inverter component is arranged in the third chamber. The inverter component is equipped with a suction fan. The inverter component is electrically connected to the lifting mechanism, the heat exchanger, the detection power supply, and the suction fan to maintain the normal operation of the cyclic charging and discharging equipment.

[0010] Furthermore, the inner cavity of the multi-chamber cooling box is divided into a first chamber, a second chamber and a third chamber by a first air duct isolation wall and a second air duct isolation wall, wherein the first chamber and the third chamber are respectively arranged on the left and right sides of the second chamber, and the upper vent is arranged above the first air duct isolation wall, and the lower vent is arranged below the first air duct isolation wall.

[0011] Furthermore, an auxiliary fan is provided at one end of the upper air duct away from the exhaust fan.

[0012] Furthermore, the upper part of the third chamber is provided with a heat dissipation area with a front end opening, the front part of the heat dissipation area is an air inlet section, the middle part is an installation section, and the rear part is an exhaust section, wherein the exhaust section is located directly below the heat dissipation air duct, and the exhaust section is communicated with the heat dissipation air duct; the inverter component is arranged in the installation section.

[0013] Furthermore, the upper corner of the first chamber away from the second chamber is provided with an upper air guide structure, and the lower corner away from the second chamber is provided with a lower air guide structure.

[0014] Furthermore, the top plate and the bottom plate are connected by a connecting column, and a linear bearing is provided on the movable frame. The connecting column can be slidably arranged in the corresponding linear bearing to realize the movable frame sliding up and down between the top plate and the bottom plate.

[0015] Furthermore, the heat exchanger is a fin-type exchanger, which is arranged in the middle of the first chamber, with the upper part being used for hot air that has not undergone heat exchange, and the lower part being used for cold air that has undergone heat exchange.

[0016] Furthermore, a limiting mechanism is provided on the bottom plate for limiting the lowest position of the movable frame in the fixed frame.

[0017] The design principle of the present invention is: since the total heat generated by the equipment includes system heat W1 and inverter heat W2 composed of power supply heat, battery heat, line loss and contact impedance heat, the heat W2 of the inverter components and the system heat W1 are processed independently. When controlling the battery temperature, only the heat of the system heat W1 needs to be consumed, making the entire heat management easier, thereby more stably and reliably ensuring the quality of the battery. Therefore, when the heat exchanger is performing energy exchange, it is considered to only take away the necessary system heat W1.

[0018] The beneficial effects of the present invention are:

[0019] (1) The heat generated by the inverter components and the system heat are managed separately through two sets of independent air ducts, and half of the total heat of the entire equipment is independently removed, ensuring that the internal heat management of the mechanism is more stable and reliable, with fast heat dissipation and accurate temperature control, thereby controlling the battery quality;

[0020] (2) A booster fan is installed on one side of the top of the equipment to ensure that the hot air can be completely transferred to the heat exchanger to prevent heat retention inside the first cavity;

[0021] (3) An upper air guide structure and a lower air guide structure are set at the corners of the first cavity to ensure smooth air flow and prevent energy loss caused by hot air and cold air in the second cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the present invention.

[0023] Figure 2 Schematic diagram of air flow in the present invention (a and c in the figure are hot air, b and d are cold air, and dotted arrows represent the direction of air flow).

[0024] Figure 3 yes Figure 1AA cross-sectional view (B in the figure is ambient air; e and f are hot air). DETAILED DESCRIPTION

[0025] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not used to limit the embodiment of the present invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0028] 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", "axial", "radial", "circumferential" and the like to 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0033] The cyclic charging and discharging device of the present invention comprises:

[0034] The multi-chamber cooling box 1 is provided with a heat dissipation duct 14 on the top, and is provided with a first chamber 11, a second chamber 12 and a third chamber 13 inside. The first chamber 11 is connected to the second chamber 12 through an upper vent and a lower vent respectively, and the first chamber 11 and the second chamber 12 constitute an internal circulation temperature control channel; an exhaust fan 121 is provided at the air inlet end of the upper vent in the second chamber 12, for sending air above the second chamber 12 into the first chamber 11; a blowing fan 122 is provided at the air outlet end of the lower vent in the second chamber 12, for sending air below the first chamber 11 into the second chamber 12; the third chamber 13 is isolated from the first chamber 11 and the second chamber 12 respectively, and is connected to the heat dissipation duct 14, and the third chamber 13 and the heat dissipation duct 14 constitute an external circulation temperature control channel;

[0035] The charging and discharging device 2 is arranged in the second chamber 12 and includes a fixed frame 21, a movable frame 22, a lifting mechanism 23 and a detection power supply 24; the fixed frame 21 has a top plate 211 and a bottom plate 212 which are parallel to each other; an upper air duct 25 is provided between the top plate 211 and the inner top of the second chamber 12, and the air outlet of the upper air duct 25 extends to the air inlet of the exhaust fan 121; the lifting mechanism 23 is arranged in the fixed frame 21, and its movable end is connected to the movable frame 22 which can be lifted and lowered in the fixed frame. The area between the movable frame 22 and the bottom plate 212 is the downwind duct 26, and the air inlet end of the downwind duct 26 is located at the air outlet of the blower fan 122; an air supply fan 221 is provided at the bottom of the movable frame 22, which is used to promote the air in the downwind duct to flow upward through the tray and then be transported to the upwind duct; the detection power supply 24 is provided at the inner top of the fixed frame 21, and a detection probe 241 is provided at the bottom of the detection power supply 24;

[0036] The heat exchanger 3 is disposed in the first chamber 11. The heat exchanger 3 is connected to the coolant supply device and has a plurality of heat exchange channels for achieving heat exchange between the coolant in the heat exchanger and the air flowing through the heat exchange channels.

[0037] And the inverter component 4 is arranged in the third chamber 13. The inverter component 4 is equipped with a suction fan. The inverter component 4 is electrically connected to the lifting mechanism 22, the heat exchanger 3, the detection power supply 23, the suction fan and other electrical components to maintain the normal operation of the cyclic charging and discharging equipment.

[0038] In some embodiments of the present invention, the inner cavity of the multi-chamber cooling box 1 is divided into a first chamber 11, a second chamber 12 and a third chamber 13 by a first air duct isolation wall 15 and a second air duct isolation wall 16, wherein the first chamber 11 and the third chamber 13 are respectively arranged on the left and right sides of the second chamber 12, and the upper vent is arranged above the first air duct isolation wall 15, and the lower vent is arranged below the first air duct isolation wall 15.

[0039] In some embodiments of the present invention, an auxiliary fan 251 is provided at one end of the upper air duct 25 away from the exhaust fan 121, which can ensure that the hot air in the upper air duct is completely transferred to the first cavity and ensure that the heat inside the second cavity is not retained at its top.

[0040] In some embodiments of the present invention, the upper portion of the third chamber 13 is provided with a heat dissipation zone with a front opening. The front portion of the heat dissipation zone is an air inlet section 131, the middle portion is an installation section 132, and the rear portion is an exhaust section 133. The exhaust section 133 is located directly below the heat dissipation duct 14, and the heat dissipation duct 14 is connected to the exhaust section 133. The inverter component 4 is provided in the installation section 132. The inverter component 4 is equipped with a suction fan. The heat generated by the operation of the inverter component 4 is concentrated in the heat dissipation zone. When the suction fan is in operation, it can draw ambient air from the opening serving as the air inlet into the air inlet section, and then flow through the inverter component into the exhaust section. At this time, the air entering the exhaust section is discharged from the multi-chamber cooling box through the heat dissipation duct, thereby quickly reducing the temperature of the inverter component and removing the heat generated by it. Multiple heat dissipation ducts can be provided at the top of the third chamber to improve heat dissipation efficiency and prevent heat retention in the heat dissipation zone.

[0041] In some embodiments of the present invention, an upper air guide structure 111 is provided at an upper corner of the first chamber 11 away from the second chamber 12, and a lower air guide structure 112 is provided at a lower corner away from the second chamber. This ensures smooth airflow and prevents energy loss of hot and cold air within the first chamber. In other embodiments of the present invention, the upper air guide structure 111 and the lower air guide structure 112 may be plate-like structures with folds formed at the upper or lower corners to facilitate airflow along a predetermined route.

[0042] In some embodiments of the present invention, the top plate 211 and the bottom plate 212 are connected by connecting columns 213. The movable frame 22 is provided with linear bearings 221. The connecting columns 213 are slidably arranged in corresponding linear bearings 221, so that the movable frame 22 can slide up and down between the top plate 211 and the bottom plate 212. During the entire lifting process, the movable frame 22 is always parallel to the top plate 211 and the bottom plate 212, so that the tray 5 placed on the movable frame 22 always moves up or down horizontally, ensuring that the batteries 6 in the tray 5 can be pressed and contacted with the detection probe at the bottom of the detection power supply 24 at the same time, so that the batteries 6 in the tray 5 can be tested simultaneously.

[0043] In some embodiments of the present invention, the heat exchanger 3 is a fin-type exchanger, which is arranged in the middle of the first chamber 11, with the upper part being used to carry hot air that has not undergone heat exchange, and the lower part being used to carry cold air that has undergone heat exchange. The coolant in the present invention is cooling water. The hot air entering the upper part of the first cavity 11 passes through the gaps between the fins of the fin-type exchanger and undergoes heat exchange with the cooling water in the fin-type heat exchanger, becoming cold air and being sent back into the downwind duct by the blower fan. The cold air entering the downwind duct 26 is blown into the upwind duct 25 by the air outlet fan to form hot air, passing through the tray 5 and battery 6 in the middle to cool the battery 6, thereby completing the internal circulation of air in the internal circulation temperature control channel.

[0044] In some embodiments of the present invention, a plurality of limiting mechanisms 214 are provided on the periphery of the bottom plate 212 to limit the lowest position of the movable frame 22 within the fixed frame 21. An L-shaped stopper 215 is provided at the top of the limiting mechanism 214, and the area enclosed by the L-shaped stopper can precisely accommodate the tray 5. In other embodiments of the present invention, the limiting mechanism 214 includes a limiting cylinder and an L-shaped stopper 215. The limiting cylinder is vertically mounted on the inner bottom surface of the bottom plate 212, and the lifting end of the limiting cylinder is connected to the L-shaped stopper 215, so that the lowest position of the movable frame can be adjusted as needed.

[0045] The specific heat management scheme of the present invention is as follows:

[0046] The system heat W1 generated by the batteries, detection power supply, and corresponding line losses and contact impedance within the second chamber 12 is blown upward by the supply fan 221 to the upper air duct 25 at the top of the second chamber 12, forming hot air. This hot air is then drawn into the first chamber 11 on the side of the charging and discharging device 2 by the exhaust fan 121. Because the multi-chamber cooling box 1 is relatively wide, to prevent the hot air from the top of the second chamber 12 from being completely drawn into the side first chamber and becoming trapped, a booster fan 251 is installed on the side of the upper air duct 25 at the top of the charging and discharging device, away from the first chamber 11. This ensures that the hot air from the top of the second chamber 12 is completely transferred to the upper part of the side first chamber 11 under the action of the exhaust fan 121 and the booster fan 251. To reduce the energy loss of the hot air within the first chamber 11, an upper air guide structure 111 is installed at the upper corner of the first chamber 11, away from the second chamber 12, to ensure that the hot air flows smoothly into the upper part of the first chamber. A heat exchanger is located in the middle of the first cavity. Hot air exchanges energy with heat exchanger 3 and, after exiting the lower end of heat exchanger 3, becomes cold air, which then enters the lower portion of first cavity 11. To reduce the energy loss of the cold air within first cavity 11, a lower air guide structure 112 is provided in the lower corner of first cavity 11, away from the second cavity, to ensure smooth flow of the cold air into the lower portion of second cavity 12. The cold air is then blown by blower fan 122 into lower air duct 26 below second cavity 12. Air supply fan 221 blows air upward, removing heat generated by battery 6, power supply unit, and corresponding line loss, contact impedance, etc., thereby forming a thermal cycle and temperature control within the mechanism.

[0047] A first chamber 11 is located on one side of the second chamber 12, and a heat exchanger 3 is housed within the first chamber 11. A third chamber 13 is located on the opposite side of the second chamber 12, away from the first chamber. The inverter component 4 is housed within the third chamber 13, and a heat dissipation duct 14 is located on the top of the outer chamber. The external circulation temperature control channel formed by the heat dissipation duct 14 and the heat dissipation zone of the third chamber 13 is completely isolated from the internal circulation temperature control channel, meaning that heat generated by the inverter component 4 does not enter the internal circulation temperature control channel. The air inlet at the front end of the heat dissipation zone communicates with the exterior of the multi-chamber cooling box 1. Ambient air from outside the equipment is drawn in by the suction fan of the inverter component 4, flows through the interior of the inverter component 4, and removes the heat generated by the inverter component 4, forming hot air. This hot air enters the dedicated heat dissipation duct 14 for the inverter component 4, which is connected to the factory's heat dissipation ducting. This means that the hot air generated by the inverter component 4 is absorbed and managed uniformly within the factory, thus forming an external circulation temperature control system between the inverter component and the outside.

[0048] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cyclic charging and discharging device, characterized in that: include: A multi-chamber cooling box has a heat dissipation duct on the top and a first chamber, a second chamber and a third chamber inside. The first chamber is connected to the second chamber through an upper vent and a lower vent respectively. The first chamber and the second chamber constitute an internal circulation temperature control channel. An exhaust fan is provided at the air inlet end of the upper vent in the second chamber, for delivering air above the second chamber into the first chamber; a blower fan is provided at the air outlet end of the lower vent in the second chamber, for delivering air below the first chamber into the second chamber; the third chamber is isolated from the first chamber and the second chamber respectively and is connected to the heat dissipation duct, and the third chamber and the heat dissipation duct constitute an external circulation temperature control channel; The charging and discharging device is arranged in the second chamber and includes a fixed frame, a movable frame, a lifting mechanism and a detection power supply; the fixed frame has a top plate and a bottom plate that are parallel and opposite to each other; an upper air duct is provided between the top plate and the inner top of the second chamber, and the air outlet of the upper air duct extends to the air inlet of the exhaust fan; the lifting mechanism is arranged in the fixed frame, and its movable end is connected to a movable frame that can be raised and lowered in the fixed frame. The area between the movable frame and the bottom plate is the downwind duct, and the air inlet end of the downwind duct is located at the air outlet of the blower fan; an air supply fan is provided at the bottom of the movable frame, which is used to cause the air in the downwind duct to flow upward through the tray and then be transported to the upwind duct; the detection power supply is arranged at the inner top of the installation frame, and a detection probe is provided at the bottom of the detection power supply; a heat exchanger disposed in the first chamber, the heat exchanger being in communication with the coolant supply device, and the heat exchanger having at least one heat exchange channel for achieving heat exchange between the coolant in the heat exchanger and the air flowing through the heat exchange channel; And the inverter component is arranged in the third chamber. The inverter component is equipped with a suction fan. The inverter component is electrically connected to the lifting mechanism, the heat exchanger, the detection power supply, and the suction fan to maintain the normal operation of the cyclic charging and discharging equipment.

2. A cyclic charging and discharging device according to claim 1, characterized in that: The inner cavity of the multi-chamber cooling box is divided into a first chamber, a second chamber and a third chamber by a first air duct isolation wall and a second air duct isolation wall, wherein the first chamber and the third chamber are respectively arranged on the left and right sides of the second chamber, the upper vent is arranged above the first air duct isolation wall, and the lower vent is arranged below the first air duct isolation wall.

3. A cyclic charging and discharging device according to claim 2, characterized in that: An auxiliary fan is provided at one end of the upper air duct away from the exhaust fan.

4. A cyclic charging and discharging device according to claim 1, characterized in that: The upper part of the third chamber is provided with a heat dissipation area with a front end opening, the front part of the heat dissipation area is the air inlet section, the middle part is the installation section, and the rear part is the exhaust section, wherein the exhaust section is located directly below the heat dissipation air duct, and the exhaust section is connected to the heat dissipation air duct; the inverter component is arranged in the installation section.

5. A cyclic charging and discharging device according to claim 2, characterized in that: An upper air guide structure is provided at an upper corner of the first chamber away from the second chamber, and a lower air guide structure is provided at a lower corner away from the second chamber.

6. A cyclic charging and discharging device according to claim 2, characterized in that: The top plate and the bottom plate are connected by connecting columns. A linear bearing is provided on the movable frame. The connecting columns are slidably arranged in the corresponding linear bearings to realize the movable frame sliding up and down between the top plate and the bottom plate.

7. A cyclic charging and discharging device according to claim 2, characterized in that: The heat exchanger is a fin-type exchanger, which is arranged in the middle of the first chamber, with hot air that has not undergone heat exchange flowing upward and cold air that has undergone heat exchange flowing downward.

8. A cyclic charging and discharging device according to claim 6, characterized in that: A limiting mechanism is provided on the bottom plate.

Images