Energy storage system and device based on source-grid-load-storage integration

Abstract

The present invention relates to the field of electric energy storage, and specifically to an energy storage system and device based on the integration of source, grid, load and storage, comprising a battery system (BS), a power conversion system (PCS), a battery management system (BMS) and a monitoring system. The system solves the problem that a basic module within an existing single-battery cabinet generates heat during use, and in hot weather, the heat is less likely to dissipate into the external environment. If the heat cannot be dissipated for a long time, it will affect the operation of the basic module and the battery management system, thereby interfering with the normal operation of the entire container energy storage device. In addition, in winter weather with a large temperature difference between the inside and the outside, small water droplets often condense on the inner wall of the single-battery cabinet. If these small water droplets are not removed in time, they will flow down the cabinet wall to the bottom, causing the internal environment of the single-battery cabinet to be humid, thereby causing the basic module and the battery management system to become damp and unable to operate normally.

Description

Technical Field

[0001] The present invention relates to the field of electric energy storage, and in particular to an energy storage system and device based on source-grid-load-storage integration. Background Art

[0002] "Source-grid-load-storage integration" is an operating mode and technology that can maximize the utilization of energy resources. Through various forms of interaction such as source-source complementarity, source-grid coordination, grid-load interaction, grid-storage interaction and source-load interaction, it can improve the dynamic power balancing capability of the power system in a more economical, efficient and safe manner. It is an important development path for building a new type of power system.

[0003] The integrated energy storage system of source, grid, load and storage refers to a cyclic process in which energy is stored and released when needed through equipment in the process of implementing various interactive forms such as source complementarity, source-grid coordination, grid-load interaction, grid-storage interaction and source-load interaction. This equipment is generally a container energy storage device composed of multiple single battery cabinets connected in parallel, in which the single battery cabinet is composed of a battery management system (BMS) and multiple basic modules connected in series, and the basic module is packaged as a basic module consisting of multiple single cells.

[0004] At present, when a single-battery cabinet is in use, the basic module inside it generates heat. During long-term use, it has been found that in hot weather, the heat is more difficult to dissipate into the external environment. If the heat cannot be dissipated for a long time, it will affect the operation of the basic module and the battery management system, thereby interfering with the normal operation of the entire container energy storage device. In addition, in winter weather with a large temperature difference between the inside and the outside, small water droplets often condense on the inner wall of the single-battery cabinet. If these small water droplets are not removed in time, they will flow down the cabinet wall to the bottom, causing the internal environment of the single-battery cabinet to be humid, thereby causing the basic module and the battery management system to become damp and unable to operate normally. Summary of the Invention

[0005] In response to the deficiencies of the prior art, the present invention provides an energy storage system and device based on the integration of source, grid, load and storage, which solves the problem that the basic module inside the single-battery cabinet generates heat during use. In hot weather, the heat is more difficult to dissipate into the external environment. If the heat cannot be dissipated for a long time, it will affect the operation of the basic module and the battery management system, thereby interfering with the normal operation of the entire container energy storage device. In addition, in winter weather with a large temperature difference between the inside and the outside, small water droplets often condense on the inner wall of the single-battery cabinet. If these small water droplets are not removed in time, they will flow down the cabinet wall to the bottom, causing the internal environment of the single-battery cabinet to be humid, thereby causing the basic module and the battery management system to become damp and unable to operate normally.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an energy storage system and device based on the integration of source, grid, load and storage, including a battery system BS, a power conversion system PCS, a battery management system BMS and a monitoring system. One end of the battery system BS is connected to the power conversion system PCS via an electrical signal, the power conversion system PCS is remotely connected to the monitoring system via an electrical signal, the monitoring system is remotely connected to the battery management system BMS via an electrical signal, the battery management system BMS and the power conversion system PCS are also connected via an electrical signal, and the power conversion system PCS is remotely connected to the external power grid;

[0007] The battery system BS includes a battery cabinet, an energy storage unit, a drive unit, a heat dissipation unit, a linkage unit, an air blower unit and a condensate collection unit, wherein an energy storage unit is arranged at the bottom of the battery cabinet, a drive unit is fixedly installed on the rear side of the upper end surface of the battery cabinet, a heat dissipation unit is connected to the lower end of the front side of the drive unit, rectangular through grooves are provided on the left and right side walls of the battery cabinet, a heat dissipation unit is rotatably installed in the rectangular through grooves, a linkage unit is connected to the lower end of the rear side of the drive unit, an air blower unit is installed near the left and right sides of the linkage unit, the air blower unit is rotatably arranged on the rear side wall of the battery cabinet, and a condensate collection unit is fixedly installed below the air blower unit.

[0008] Preferably, the battery cabinet includes a cabinet body, a cabinet door, a handle, an observation port, transparent glass and an air outlet, wherein the cabinet door is hinged on the right side wall at the front end of the cabinet body, a handle is fixedly connected to the middle part of the front end of the right side wall of the cabinet door, observation ports are evenly arranged from front to back near the upper end of the cabinet door, transparent glass is installed at the observation port, and air outlets are evenly arranged on the lower half of the cabinet door.

[0009] Preferably, the air outlet is in a truncated cone shape with an inner diameter gradually decreasing from left to right. The truncated cone shape of the air outlet is conducive to the heat inside the cabinet to be dissipated outwards, thereby improving the heat dissipation efficiency.

[0010] Preferably, the energy storage unit includes a moisture-proof base, battery cells, a protective shell, a wire and a control switch, wherein a moisture-proof base is fixedly installed on the bottom of the cabinet, battery cells are evenly arranged on the moisture-proof base from left to right, a protective shell is provided on the outside of the battery cells, and control switches are evenly installed on the rear wall of the cabinet from left to right, the battery cells are connected in series, and the battery cells and the control switch are connected by wires.

[0011] Preferably, the drive unit includes a driving motor, an L-shaped plate, a driving pulley, a pulley shaft, a fixed plate, a driven pulley, a connecting belt and a driving bevel gear, wherein an L-shaped plate is fixedly connected to the middle of the rear side of the upper end surface of the cabinet, the upper end of the L-shaped plate is fixedly installed with the driving motor through the motor base, the lower end of the driving motor is connected to the pulley shaft through a coupling, the upper end of the pulley shaft is fixedly installed with the driving pulley, the upper end of the heat dissipation unit is fixedly installed with the driven pulley, the driven pulley and the driving pulley are connected by a connecting belt, the outer side of the rear side wall of the cabinet is fixedly connected with the fixed plate, the pulley shaft is rotatably installed on the fixed plate, and the lower end of the pulley shaft is installed with the driving bevel gear by a key connection.

[0012] Preferably, the heat dissipation unit includes a rotating shaft, a heat dissipation plate, a rectangular slide, a sliding bottom plate, an extrusion spring, a fan plate, sieve holes, a vertical rod and a triangular scraper, wherein rectangular through grooves are provided on the left and right side walls of the cabinet, a rotating shaft is installed in the rectangular through groove and rotates evenly from front to back, a heat dissipation plate is fixedly installed on the rotating shaft, rectangular slides are symmetrically provided at the bottom of the cabinet near the left and right sides, a sliding bottom plate is slidingly provided at the bottom of the rectangular slide, an extrusion spring is evenly installed between the sliding bottom plate and the side wall of the rectangular slide, a fan plate is fixedly connected to the upper end of the sliding bottom plate, sieve holes are evenly provided on the fan plate, a vertical rod is fixedly connected to the upper end of the rear wall of the fan plate, a triangular scraper is fixedly connected to the rear side of the vertical rod, and the rear side wall of the triangular scraper slides and fits on the inner wall of the cabinet.

[0013] Preferably, the end of the heat sink away from the rotating shaft has an arc-shaped structure. The heat sink with an arc-shaped end can reduce the friction between the heat sink and the sliding base plate, so that the heat sink can more easily drive the sliding base plate to move during the rotation process.

[0014] Preferably, the linkage unit includes a lining plate, a linkage shaft, a linkage bevel gear and a No. 1 bevel gear, wherein the lining plates are fixedly connected symmetrically on the left and right outer sides of the rear side wall of the cabinet, a linkage shaft is rotatably installed between the lining plates, a linkage bevel gear is installed in the middle of the linkage shaft by a key connection, the linkage bevel gear and the driving bevel gear are engaged with each other, and the No. 1 bevel gear is installed on the linkage shaft near the left and right ends by a key connection.

[0015] Preferably, the blower unit includes a No. 2 bevel gear, a blower shaft, a fan wheel and fan blades, wherein the blower shaft is installed on the rear side wall of the cabinet for symmetrical rotation on the left and right sides, the rear end of the blower shaft is installed with a No. 2 bevel gear through a key connection, the No. 2 bevel gear and the No. 1 bevel gear are meshed with each other, the front end of the blower shaft is fixedly connected to the fan wheel, and fan blades are evenly installed on the circumferential side wall of the fan wheel along its circumference.

[0016] Preferably, the condensate bead collection unit includes a collection trough, a herringbone cover and a leakage hole, wherein the collection trough is fixedly connected to the middle part of the rear side wall of the cabinet near the lower end, the herringbone cover is fixedly installed on the upper end of the collection trough, and the upper end surface of the herringbone cover is evenly provided with leakage holes.

[0017] Beneficial effects of the present invention:

[0018] 1. The drive unit can drive the rotating shaft and the heat sink to rotate in the hot summer. When the heat sink and the cabinet are perpendicular to each other, air convection will be formed on the left and right sides of the cabinet, which facilitates the heat inside the cabinet to dissipate outward, thereby ensuring the stability of the basic module and battery management system. During the rotation of the heat sink, the heat sink will drive the fan plate to fan back and forth, further increasing the speed of air convection and thus enhancing the heat dissipation effect. At the same time, the drive unit will drive the blower unit to rotate under the action of the linkage unit, thereby dissipating heat from the cabinet to the front side of the cabinet, improving the heat dissipation efficiency;

[0019] 2. The fan plate will drive the vertical rod and the triangular scraper to move back and forth during the reciprocating motion. When encountering a winter environment with a large temperature difference inside the cabinet, the triangular scraper can scrape the condensation beads on the rear wall of the cabinet into the condensation bead collection unit, thereby preventing these condensation beads from flowing to the bottom of the cabinet and causing the internal environment of the cabinet to be humid, resulting in the basic module and battery management system being damp and unable to operate normally. At the same time, under the action of the blower unit, the gas inside the cabinet will accelerate to flow outward, thereby increasing the volatilization speed of the condensation beads inside the condensation bead collection unit. While the condensation beads are volatilizing, they can also play a role in cooling, thereby ensuring the normal operation of the single battery cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 is a flow chart of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 3 This is a rear perspective structural diagram of the present invention without the cabinet door;

[0024] Figure 4 In the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0025] Figure 5 It is a structural diagram of the cabinet door and the air outlet in the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating shaft and the heat dissipation plate in the present invention;

[0027] Figure 7 It is a front perspective structural diagram of the present invention without the cabinet door.

[0028] In the figure: 1. Battery system BS; 11. Battery cabinet; 111. Cabinet body; 112. Cabinet door; 113. Handle; 114. Observation port; 115. Transparent glass; 116. Air outlet; 12. Energy storage unit; 121. Moisture-proof base; 122. Battery cell; 123. Protective housing; 124. Wire; 125. Control switch; 13. Drive unit; 131. Drive motor; 132. L-shaped plate; 133. Driving pulley; 134. Pulley shaft; 135. Fixed plate; 136. Driven pulley; 137. Connecting belt; 138. Driving bevel gear; 14. Heat dissipation unit; 141. Rotating shaft; 142. 1. Heat sink; 143. Rectangular slide; 144. Sliding bottom plate; 145. Extrusion spring; 146. Fan plate; 147. Sieve hole; 148. Vertical rod; 149. Triangular scraper; 15. Linkage unit; 151. Liner; 152. Linkage shaft; 153. Linkage bevel gear; 154. Bevel gear No. 1; 16. Blower unit; 161. Bevel gear No. 2; 162. Blower shaft; 163. Fan wheel; 164. Fan blade; 17. Condensate collection unit; 171. Collection trough; 172. Herringbone cover; 173. Leakage hole; 2. Power conversion system PCS; 3. Battery management system BMS; 4. Monitoring system. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] See Figures 1 to 7 A source-grid-load-storage integrated energy storage system and device includes a battery system BS1, a power conversion system PCS2, a battery management system BMS3, and a monitoring system 4. One end of the battery system BS1 is connected to the power conversion system PCS2 via an electrical signal. The power conversion system PCS2 is remotely connected to the monitoring system 4 via an electrical signal. The monitoring system 4 is remotely connected to the battery management system BMS3 via an electrical signal. The battery management system BMS3 and the power conversion system PCS2 are also connected via electrical signals. The power conversion system PCS2 is remotely connected to the external power grid.

[0031] See Figure 2 、 Figure 3 and Figure 7The battery system BS1 includes a battery cabinet 11, an energy storage unit 12, a drive unit 13, a heat dissipation unit 14, a linkage unit 15, a blower unit 16 and a condensation bead collection unit 17, wherein the energy storage unit 12 is arranged at the bottom of the battery cabinet 11, the drive unit 13 is fixedly installed on the rear side of the upper end surface of the battery cabinet 11, the heat dissipation unit 14 is connected to the lower end of the front side of the drive unit 13, rectangular through grooves are opened on the left and right side walls of the battery cabinet 11, the heat dissipation unit 14 is rotatably installed in the rectangular through grooves, the linkage unit 15 is connected to the lower end of the rear side of the drive unit 13, and the blower unit 16 is installed near the left and right sides of the linkage unit 15, the blower unit 16 is rotatably arranged on the rear side wall of the battery cabinet 11, and the condensation bead collection unit 17 is fixedly installed below the blower unit 16. During specific operation, the energy storage unit 12 can store excess electricity in the circuit. When needed, the drive unit 13 is started, and the heat dissipation unit 14 is driven by the drive unit 13 to dissipate heat inside the battery cabinet 11. At the same time, the drive unit 13 will drive the linkage unit 15 to rotate, and the linkage unit 15 will drive the blower unit 16 to rotate. The operation of the blower unit 16 can generate airflow inside the battery cabinet 11, further improving the heat dissipation efficiency. During the operation of the heat dissipation unit 14, the heat dissipation unit 14 can scrape the rear side wall inside the battery cabinet 11. When encountering winter weather with a large temperature difference between the inside and outside, the condensation beads generated on the rear side wall inside the battery cabinet 11 will be scraped off and collected by the condensation bead collection unit 17. During the operation of the blower unit 16, the volatilization of the condensation beads inside the condensation bead collection unit 17 can be accelerated, thereby achieving the purpose of auxiliary heat dissipation, thereby further improving the heat dissipation effect.

[0032] See Figure 2 and Figure 5 The battery cabinet 11 includes a cabinet body 111, a cabinet door 112, a handle 113, an observation port 114, transparent glass 115, and an air outlet 116. The cabinet door 112 is hingedly connected to the right side wall of the front end of the cabinet body 111, and the handle 113 is fixedly connected to the middle of the front right side wall of the cabinet door 112. The cabinet door 112 is evenly provided with observation ports 114 near the upper end from front to back. The observation ports 114 are installed with transparent glass 115. The lower half of the cabinet door 112 is evenly provided with air outlets 116. The air outlets 116 are in a truncated cone-shaped structure with an inner diameter gradually decreasing from left to right. The truncated cone-shaped air outlet 116 is conducive to the outward dissipation of heat inside the cabinet body 111, thereby improving heat dissipation efficiency. In specific operation, when the battery system BS1 is in operation, the cabinet door 112 is in a closed state, and the staff can observe the situation inside the cabinet body 111 through the observation port 114, thereby facilitating the observation and recording of the operating status of the battery system BS1.

[0033] Continue reading Figure 2The energy storage unit 12 includes a moisture-proof base 121, battery cells 122, a protective shell 123, a wire 124, and a control switch 125. The moisture-proof base 121 is fixedly installed at the bottom of the cabinet 111, and battery cells 122 are evenly arranged on the moisture-proof base 121 from left to right. A protective shell 123 is provided on the outside of the battery cells 122. The control switch 125 is evenly installed on the rear wall of the cabinet 111 from left to right. The battery cells 122 are connected in series with each other, and the battery cells 122 and the control switch 125 are connected by a wire 124. During specific operation, the excess electricity in the circuit will be temporarily stored in the battery cells 122. When the voltage of the power grid is lower than the standard value, the cabinet door 112 can be opened by manually pulling the handle 113, and then the control switch 125 can be turned on. At this time, the voltage inside the battery cells 122 will compensate for the difference in the external power grid, thereby ensuring the normal operation of the circuit.

[0034] See Figure 3 The driving unit 13 includes a driving motor 131, an L-shaped plate 132, a driving pulley 133, a pulley shaft 134, a fixed plate 135, a driven pulley 136, a connecting belt 137 and a driving bevel gear 138, wherein the L-shaped plate 132 is fixedly connected to the middle part of the rear side of the upper end surface of the cabinet 111, the upper end of the L-shaped plate 132 is fixedly installed with the driving motor 131 through the motor base, the lower end of the driving motor 131 is connected to the pulley shaft 134 through a coupling, the upper end of the pulley shaft 134 is fixedly installed with the driving pulley 133, the upper end of the heat dissipation unit 14 is fixedly installed with a driven pulley 136, the driven pulley 136 and the driving pulley 133 are connected by a connecting belt 137, the outer side of the rear side wall of the cabinet 111 is fixedly connected with a fixed plate 135, the pulley shaft 134 is rotatably installed on the fixed plate 135, and the lower end of the pulley shaft 134 is installed with a driving bevel gear 138 by a key connection. During specific operation, the drive motor 131 is started, and the pulley shaft 134 is driven to rotate by the drive motor 131, thereby driving the active pulley 133 to rotate. Under the action of the connecting belt 137, the driven pulley 136 will also rotate synchronously, and the purpose of driving the heat dissipation unit 14 to rotate is achieved through the driven pulley 136.

[0035] See Figure 3 、 Figure 6 and Figure 7The heat dissipation unit 14 includes a rotating shaft 141, a heat dissipation plate 142, a rectangular slide 143, a sliding bottom plate 144, an extrusion spring 145, a fan plate 146, a sieve hole 147, a vertical rod 148 and a triangular scraper 149. The left and right side walls of the cabinet 111 are provided with rectangular through-grooves, in which the rotating shaft 141 is evenly rotated and installed from front to back. The heat dissipation plate 142 is fixedly installed on the rotating shaft 141. The end of the heat dissipation plate 142 away from the rotating shaft 141 is an arc-shaped structure. The heat dissipation plate 142 with an arc-shaped end can reduce the friction between it and the sliding bottom plate 144, so that the heat dissipation plate 142 rotates. During the process, the sliding bottom plate 144 can be driven to move more easily. Rectangular sliding grooves 143 are symmetrically provided near the left and right sides of the bottom of the cabinet 111. A sliding bottom plate 144 is slidingly provided at the bottom of the rectangular sliding groove 143. Extrusion springs 145 are evenly installed between the sliding bottom plate 144 and the side walls of the rectangular sliding groove 143. A fan plate 146 is fixedly connected to the upper end of the sliding bottom plate 144. Sieve holes 147 are evenly provided on the fan plate 146. A vertical rod 148 is fixedly connected to the upper end of the rear side wall of the fan plate 146. A triangular scraper 149 is fixedly connected to the rear side of the vertical rod 148. The rear side wall of the triangular scraper 149 slides and fits on the inner wall of the cabinet 111. During specific operation, the driven pulley 136 will drive the rotating shaft 141 to rotate during the rotation process, thereby driving the heat sink 142 to rotate. When the heat sink 142 rotates to be perpendicular to the left and right side walls of the cabinet 111, a certain amount of air convection will be formed on the left and right side walls of the cabinet 111. In this way, a better heat dissipation effect can be achieved even in the hot summer. At the same time, during the rotation process of the heat sink 142, its end will continuously squeeze the sliding bottom plate 144, thereby driving the sliding bottom plate 144 to slide in the rectangular slide groove 143. At the same time, the squeezing spring 145 is compressed. When the heat sink 142 is separated from the sliding bottom plate 144, the squeezing spring The reaction force of 145 will drive the sliding bottom plate 144 to reset, and so on, the reciprocating motion function of the sliding bottom plate 144 and the fan plate 146 can be realized. The fan plate 146 can accelerate the movement of the air flow during the reciprocating motion, thereby improving the heat dissipation efficiency. The function of the sieve hole 147 is to reduce the resistance of the fan plate 146 and improve the convection effect. The fan plate 146 will drive the vertical rod 148 and the triangular scraper 149 to reciprocate during the reciprocating motion. If condensation beads are generated on the rear side wall inside the cabinet 111, the triangular scraper 149 will scrape the condensation beads off, thereby facilitating the subsequent collection by the condensation bead collection unit 17.

[0036] See Figure 3 and Figure 4The linkage unit 15 includes a lining plate 151, a linkage shaft 152, a linkage bevel gear 153, and a first bevel gear 154. The lining plates 151 are fixedly connected symmetrically to the outer side of the rear side wall of the cabinet 111. The linkage shaft 152 is rotatably installed between the lining plates 151. The middle part of the linkage shaft 152 is installed with a linkage bevel gear 153 through a key connection. The linkage bevel gear 153 and the driving bevel gear 138 are meshed with each other. The first bevel gear 154 is installed near the left and right ends of the linkage shaft 152 through a key connection. During operation, the pulley shaft 134 will drive the driving bevel gear 138 at its lower end to rotate, thereby driving the linkage bevel gear 153 to rotate. By driving the linkage shaft 152 and the first bevel gear 154 to rotate, the purpose of driving the blower unit 16 to rotate is achieved.

[0037] See Figure 4 and Figure 7 The blower unit 16 includes a second bevel gear 161, a blower shaft 162, a fan wheel 163, and fan blades 164. The blower shaft 162 is symmetrically mounted on the rear side wall of the cabinet 111. The rear end of the blower shaft 162 is mounted with the second bevel gear 161 via a key connection. The second bevel gear 161 and the first bevel gear 154 are meshed with each other. The front end of the blower shaft 162 is fixedly connected to the fan wheel 163. The fan blades 164 are evenly mounted along the circumference of the circumferential side wall of the fan wheel 163. During operation, the rotation of the first bevel gear 154 drives the second bevel gear 161 to rotate, thereby driving the blower shaft 162 and the fan wheel 163 to rotate. The fan wheel 163 drives the fan blades 164 to rotate, thereby generating a forward airflow inside the cabinet 111. This airflow can carry away some heat and be discharged forward from the air outlet 116 on the cabinet door 112, thereby enhancing the heat dissipation effect.

[0038] See Figure 7 The condensate collection unit 17 includes a collection trough 171, a herringbone cover 172, and a leakage hole 173. The collection trough 171 is fixedly connected to the middle part of the rear side wall of the cabinet 111 near the lower end, and the herringbone cover 172 is fixedly installed on the upper end of the collection trough 171. The leakage holes 173 are evenly opened on the upper end surface of the herringbone cover 172. During operation, in a winter environment with a large temperature difference between the inside and the outside, if condensate beads are generated on the rear side wall inside the cabinet 111, the triangular scraper 149 will scrape off the condensate beads during the reciprocating motion. The scraped condensate beads will flow into the interior of the collection trough 171 through the leakage hole 173 on the herringbone cover 172, thereby preventing these condensate beads from flowing to the bottom of the cabinet 111 and causing the internal environment of the cabinet 111 to be humid, resulting in the basic module and the battery management system being damp and unable to operate normally.

[0039] The working principle of the present invention when in use:

[0040] 1. When the battery system BS1 is in operation, the cabinet door 112 is in a closed state, and the staff can observe the situation inside the cabinet 111 through the observation port 114, thereby facilitating the observation and recording of the operating status of the battery system BS1.

[0041] Second: When encountering hot summer, the temperature inside the cabinet 111 will rise, and the drive motor 131 will be started at this time, and the pulley shaft 134 will be driven to rotate by the drive motor 131, thereby driving the active pulley 133 to rotate. Under the action of the connecting belt 137, the driven pulley 136 will also rotate synchronously, and the driven pulley 136 will drive the rotating shaft 141 to rotate, thereby driving the heat sink 142 to rotate. When the heat sink 142 rotates to be perpendicular to the left and right side walls of the cabinet 111, a certain amount of air convection will be formed on the left and right side walls of the cabinet 111, so that a good heat dissipation effect can be achieved in the hot summer, and the heat dissipation During the rotation of the heat plate 142, its end will continuously squeeze the sliding base plate 144, thereby driving the sliding base plate 144 to slide in the rectangular slide groove 143. At the same time, the squeezing spring 145 is compressed. When the heat plate 142 is separated from the sliding base plate 144, the reaction force of the squeezing spring 145 will drive the sliding base plate 144 to return to its original position. This reciprocating motion function of the sliding base plate 144 and the fan plate 146 can be realized. The fan plate 146 can accelerate the movement of the air flow during the reciprocating motion, thereby improving the heat dissipation efficiency. The function of the sieve holes 147 is to reduce the resistance of the fan plate 146 and improve the convection effect.

[0042] 3. The pulley shaft 134 drives the driving bevel gear 138 at its lower end to rotate during its rotation, thereby driving the linkage bevel gear 153 to rotate. By driving the linkage shaft 152 and the first bevel gear 154 to rotate, the first bevel gear 154 drives the second bevel gear 161 to rotate during its rotation, thereby driving the blast shaft 162 and the fan wheel 163 to rotate. The fan wheel 163 drives the fan blades 164 to rotate, thereby generating a forward airflow inside the cabinet 111. This airflow can take away some heat and be discharged forward from the air outlet 116 on the cabinet door 112, thereby enhancing the heat dissipation effect.

[0043] 4: The fan plate 146 will also drive the vertical rod 148 and the triangular scraper 149 to reciprocate during the reciprocating motion. In a winter environment where the temperature difference between the inside and outside is large, if condensation beads are generated on the rear wall inside the cabinet 111, the triangular scraper 149 will scrape off the condensation beads during the reciprocating motion. The scraped condensation beads will flow into the collection tank 171 through the leakage holes 173 on the herringbone cover 172, thereby preventing these condensation beads from flowing to the bottom of the cabinet 111 and causing the internal environment of the cabinet 111 to be humid, resulting in the basic module and the battery management system being damp and unable to operate normally. The forward airflow generated by the rotation of the fan blades 164 can take away part of the heat and discharge it forward from the air outlet 116 on the cabinet door 112, thereby enhancing the heat dissipation effect.

[0044] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy storage system based on source-grid-load-storage integration, comprising a battery system BS (1), a power conversion system PCS (2), a battery management system BMS (3) and a monitoring system (4), characterized in that: One end of the battery system BS (1) is connected to a power conversion system PCS (2) via an electrical signal, the power conversion system PCS (2) is remotely connected to a monitoring system (4) via an electrical signal, the monitoring system (4) is remotely connected to a battery management system BMS (3), the battery management system BMS (3) and the power conversion system PCS (2) are also connected via an electrical signal, and the power conversion system PCS (2) is remotely connected to an external power grid; The battery system BS (1) comprises a battery cabinet (11), an energy storage unit (12), a drive unit (13), a heat dissipation unit (14), a linkage unit (15), an air blower unit (16) and a condensation bead collecting unit (17), wherein the energy storage unit (12) is provided at the bottom of the battery cabinet (11), the drive unit (13) is fixedly installed at the rear side of the upper end surface of the battery cabinet (11), the heat dissipation unit (14) is connected to the lower end of the front side of the drive unit (13), rectangular through slots are provided on the left and right side walls of the battery cabinet (11), the heat dissipation unit (14) is rotatably installed in the rectangular through slots, the linkage unit (15) is connected to the lower end of the rear side of the drive unit (13), the air blower unit (16) is installed near the left and right sides of the linkage unit (15), the air blower unit (16) is rotatably provided on the rear side wall of the battery cabinet (11), and the condensation bead collecting unit (17) is fixedly installed below the air blower unit (16); The driving unit (13) comprises a driving motor (131), an L-shaped plate (132), a driving pulley (133), a pulley shaft (134), a fixing plate (135), a driven pulley (136), a connecting belt (137) and a driving bevel gear (138), wherein the L-shaped plate (132) is fixedly connected to the middle portion of the rear side of the upper end surface of the cabinet (111), the driving motor (131) is fixedly mounted on the upper end of the L-shaped plate (132) through the motor base, and the lower end of the driving motor (131) is connected to the pulley through a coupling. A shaft (134), a driving pulley (133) is fixedly mounted on the upper end of the pulley shaft (134), a driven pulley (136) is fixedly mounted on the upper end of the heat dissipation unit (14), the driven pulley (136) and the driving pulley (133) are connected via a connecting belt (137), a fixing plate (135) is fixedly connected to the outer side of the rear side wall of the cabinet (111), the pulley shaft (134) is rotatably mounted on the fixing plate (135), and a driving bevel gear (138) is mounted on the lower end of the pulley shaft (134) via a key connection; The heat dissipation unit (14) includes a rotating shaft (141), a heat dissipation plate (142), a rectangular slide (143), a sliding bottom plate (144), an extrusion spring (145), a fan plate (146), a sieve hole (147), a vertical rod (148) and a triangular scraper (149), wherein rectangular through grooves are opened on the left and right side walls of the cabinet (111), and a rotating shaft (141) is evenly rotated and installed in the rectangular through groove from front to back. The heat dissipation plate (142) is fixedly installed on the rotating shaft (141), and rectangular slides are symmetrically opened near the left and right sides of the bottom of the cabinet (111). (143), a sliding bottom plate (144) is provided at the bottom of the rectangular chute (143), and an extrusion spring (145) is evenly installed between the sliding bottom plate (144) and the side wall of the rectangular chute (143). The upper end of the sliding bottom plate (144) is fixedly connected to a fan plate (146), and the fan plate (146) is evenly provided with sieve holes (147). The upper end of the rear side wall of the fan plate (146) is fixedly connected to a vertical rod (148), and the rear side of the vertical rod (148) is fixedly connected to a triangular scraper (149), and the rear side wall of the triangular scraper (149) slides and fits on the inner wall of the cabinet (111).

2. An energy storage device based on the source-grid-load-storage integrated energy storage system according to claim 1, characterized in that: The battery cabinet (11) comprises a cabinet body (111), a cabinet door (112), a handle (113), an observation port (114), transparent glass (115) and an air outlet (116), wherein the cabinet door (112) is hingedly connected to the right side wall of the front end of the cabinet body (111), the handle (113) is fixedly connected to the middle of the front end of the right side wall of the cabinet door (112), the cabinet door (112) is provided with observation ports (114) evenly spaced from front to back near the upper end thereof, the observation ports (114) are installed with transparent glass (115), and the lower half of the cabinet door (112) is provided with air outlets (116) evenly spaced.

3. The energy storage device according to claim 2, characterized in that: The air outlet (116) is in the shape of a truncated cone with an inner diameter gradually decreasing from left to right.

4. The energy storage device according to claim 3, characterized in that: The energy storage unit (12) comprises a moisture-proof base (121), battery cells (122), a protective shell (123), a wire (124) and a control switch (125), wherein the moisture-proof base (121) is fixedly mounted on the bottom of the cabinet (111), battery cells (122) are evenly arranged on the moisture-proof base (121) from left to right, a protective shell (123) is arranged outside the battery cells (122), and the control switch (125) is evenly mounted on the rear side wall of the cabinet (111) from left to right, the battery cells (122) are connected in series, and the battery cells (122) and the control switch (125) are connected via a wire (124).

5. The energy storage device according to claim 2, characterized in that: The end of the heat dissipation plate (142) away from the rotating shaft (141) is in an arc-shaped structure.

6. The energy storage device according to claim 2, characterized in that: The linkage unit (15) includes a lining plate (151), a linkage shaft (152), a linkage bevel gear (153) and a first bevel gear (154), wherein the lining plate (151) is fixedly connected to the outer side of the rear side wall of the cabinet (111) in a symmetrical manner on the left and right, and the linkage shaft (152) is rotatably installed between the lining plates (151). The linkage bevel gear (153) is installed in the middle of the linkage shaft (152) by means of a key connection. The linkage bevel gear (153) and the driving bevel gear (138) are meshed with each other, and the first bevel gear (154) is installed near the left and right ends of the linkage shaft (152) by means of a key connection.

7. The energy storage device according to claim 2, characterized in that: The blast unit (16) comprises a second bevel gear (161), a blast shaft (162), a fan wheel (163) and fan blades (164), wherein the blast shaft (162) is symmetrically mounted on the rear side wall of the cabinet (111) for rotation, the rear end of the blast shaft (162) is mounted with the second bevel gear (161) by a key connection, the second bevel gear (161) and the first bevel gear (154) are meshed with each other, the front end of the blast shaft (162) is fixedly connected with the fan wheel (163), and the fan blades (164) are evenly mounted on the circumferential side wall of the fan wheel (163) along its circumference.

8. The energy storage device according to claim 2, characterized in that: The condensate bead collection unit (17) comprises a collection trough (171), a herringbone cover (172) and a leakage hole (173), wherein the collection trough (171) is fixedly connected to the middle part of the rear side wall of the cabinet (111) near the lower end, the herringbone cover (172) is fixedly installed on the upper end of the collection trough (171), and the leakage holes (173) are evenly opened on the upper end surface of the herringbone cover (172).

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