Photovoltaic energy storage device

Abstract

The invention provides a photovoltaic energy storage device, and relates to the technical field of photovoltaic power generation, the photovoltaic energy storage device comprises a grid-connected inverter, the grid-connected inverter is installed at the back of a power storage and discharge cabinet, the grid-connected inverter is electrically connected with the power storage and discharge cabinet, a plurality of energy storage elements are arranged in the power storage and discharge cabinet, and the plurality of energy storage elements are electrically connected with the power storage and discharge cabinet. Heat dissipation assemblies are arranged on the two sides of the electricity storage and discharge cabinet, a circulating dustproof assembly is arranged on the top of the electricity storage and discharge cabinet, and a collection assembly is arranged on the front side face of the electricity storage and discharge The system further comprises a battery state monitoring assembly which is used for monitoring the state of the energy storage element and adjusting heat dissipation according to a monitoring structure. The energy storage device solves the technical problem that dust is easy to accumulate when the energy storage device adopts internal and external ventilation heat dissipation.

Description

Technical Field

[0001] The present invention belongs to the field of photovoltaic power generation, and in particular relates to a photovoltaic energy storage device. Background Art

[0002] As the energy shortage problem becomes increasingly serious, the proportion of photovoltaic power generation in the power generation field is gradually increasing. Since the characteristics of photovoltaic power sources are completely different from traditional power sources, their output power will change dramatically with the fluctuations of environmental factors such as light intensity and temperature, and this change is uncontrollable. Therefore, as the proportion of photovoltaic systems in the power grid continues to increase, their impact on the power grid must be effectively managed and controlled to ensure the safety and reliability of power supply. The application of energy storage devices in photovoltaic power generation systems can effectively solve the problem of unbalanced power supply and meet the needs of normal work. Energy storage devices play a vital role in ensuring the stable operation of photovoltaic power stations;

[0003] Existing photovoltaic energy storage devices usually use internal and external ventilation to dissipate heat in practical applications. This heat dissipation method will cause dust to accumulate easily in the energy storage device, affecting the internal structure of the energy storage device. At the same time, the dust is difficult to clean, which will further affect the heat dissipation of the energy storage device. Summary of the invention

[0004] The present invention provides a photovoltaic energy storage device to solve at least one technical problem raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a photovoltaic energy storage device, comprising: a grid-connected inverter, the grid-connected inverter is installed behind the storage and discharge cabinet, the grid-connected inverter is electrically connected to the storage and discharge cabinet, a plurality of energy storage elements are arranged in the storage and discharge cabinet, the plurality of energy storage elements are electrically connected to the storage and discharge cabinet, heat dissipation components are arranged on both sides of the storage and discharge cabinet, a circulating dustproof component is arranged on the top of the storage and discharge cabinet, and a collecting component is arranged on the front side of the storage and discharge cabinet;

[0006] It also includes a battery status monitoring component, which is used to monitor the status of the energy storage element and adjust the heat dissipation according to the monitoring structure.

[0007] Preferably, the storage and discharge cabinet includes a cabinet body, a plurality of partitions are fixedly connected in the cabinet body, energy storage elements are slidably connected between the plurality of partitions, contact structures are provided between the plurality of partitions, a grid-connected inverter, a cable trough and a cable connection port are provided on the back of the cabinet body from top to bottom, the cable trough is bolted to the cabinet body, cables are provided in the cable trough, input ends and output ends of the plurality of contact structures are respectively connected to the cable connection port and the grid-connected inverter through cables, a cabinet door is hingedly connected to the front side of the cabinet body, and a heat dissipation component is provided at the bottom of the cabinet body.

[0008] Preferably, the contact structure includes a wiring board, which is bolted to the cabinet, and a contact terminal is fixedly connected to the wiring board, the contact terminal cooperates with the contact socket of the energy storage element, an insulating flame retardant sleeve is provided on the outer sleeve of the wiring board, the contact terminal passes through and is slidably connected to the end face of the insulating flame retardant sleeve, the insulating flame retardant sleeve and the energy storage element abut against each other, a balance rod is fixedly connected to both ends of the insulating flame retardant sleeve, the balance rod is rotatably connected to a pressing rod, the pressing rod is slidably connected in a reciprocating sleeve, a compression elastic part is provided between the pressing rod and the reciprocating sleeve, a limit sliding column is symmetrically provided on the pressing rod, a limit groove is surrounded on the inner wall of the reciprocating sleeve, and the limit sliding column is slidably connected in the limit groove.

[0009] Preferably, the heat dissipation component includes an air chamber, which is arranged at the bottom of the cabinet. A plurality of heat dissipation fans are arranged in the air chamber, and the plurality of heat dissipation fans are bolted to the cabinet. A heat dissipation duct is bolted to one side of the cabinet, and a supplementary air duct is bolted to the other side of the cabinet. The heat dissipation duct is connected to the air chamber, and an air inlet is arranged on the other side of the air chamber. A heat exchange flow channel is arranged in the partition, and a plurality of Venturi tube sections are arranged on the heat dissipation duct. The side input end of the Venturi tube section passes through and is installed on the cabinet. A plurality of connecting ports are arranged on the supplementary air duct, and the connecting ports pass through and are installed on the cabinet. The Venturi tube sections and the connecting ports correspond one-to-one to the heat exchange flow channels and are interconnected.

[0010] Preferably, the circulating dust prevention component includes a negative suction fan, which is bolted on the top of the cabinet, the input end of the negative suction fan is connected to the dust removal structure, the dust removal structure is bolted on the top of the cabinet, the output end of the negative suction fan and the input end of the dust removal structure are both connected to pipes, and the two pipes pass through and are connected to the cabinet.

[0011] Preferably, the dust removal structure includes a filter bin, an open slide is provided on the filter bin, a dust collecting chamber is slidably connected in the open slide, a tapered opening is provided at the bottom of the dust collecting chamber, a cover plate is hingedly connected to the tapered opening, a dust removal filter is nested in the dust collecting chamber, and a handle is fixedly connected to the side wall of the dust collecting chamber.

[0012] Preferably, the collection component includes an anti-corrosion collection trough, which is fixedly connected to the cabinet door and is provided with a plurality of inclined interfaces. A longitudinal glass strip is provided on the side of the anti-corrosion collection trough, and an elastic insulating material is wrapped on the inclined interface. The elastic insulating material and the partition slide relative to each other, and a processing structure is provided at the bottom of the cabinet door.

[0013] Preferably, the processing structure includes an adsorption sleeve, which is fixedly connected to the cabinet door, and is connected to the anti-corrosion collection tank through a connecting channel. A basket is nested in the adsorption sleeve, and adsorption material is nested in the basket. A sealing cover is threadedly connected to the top of the adsorption sleeve, and a hook is threadedly connected to the sealing cover, and the hook and the basket cooperate with each other.

[0014] Preferably, the battery status monitoring component includes a control module, a data processing module, a detection module and an execution module, and the detection module includes:

[0015] Several pressure sensors: used to detect the pressure of the energy storage element on the upper and lower partitions, which are arranged on the partitions;

[0016] Several current sensors: used to detect the charge and discharge current of the energy storage element, which are arranged on the contact structure;

[0017] Several voltage sensors: used to detect the charge and discharge voltage of the energy storage element, which are arranged on the contact structure;

[0018] Several time sensors: used to detect the charging and discharging time of the energy storage element, which are arranged on the contact structure;

[0019] Several temperature sensors 1: used to detect the heating temperature of the energy storage element, which are arranged on the partition;

[0020] Temperature sensor 2: used to detect the ambient temperature inside the cabinet, and is installed inside the cabinet;

[0021] Humidity sensor: used to detect the ambient humidity in the cabinet, which is installed in the cabinet;

[0022] The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution module to work based on the data results of the data processing module.

[0023] Preferably, the control module controls the execution module based on the data result of the data processing module, including the following steps:

[0024] Step 1: Calculate the working coefficient W of the energy storage element based on the pressure sensor, current sensor, voltage sensor, time sensor, temperature sensor 1, temperature sensor 2 and humidity sensor b :

[0025] Where W b is the working coefficient of the energy storage element, κ is the compensation coefficient, H y is the detection value of the humidity sensor, T is the detection value of the temperature sensor 2, F i is the detection value of the pressure sensor of the i-th energy storage element, G is the weight of the energy storage element, T i is the detection value of the temperature sensor 1 of the i-th energy storage element, T0 is the optimal working temperature of the energy storage element, t i1 is the charging time of the i-th energy storage element, U ci is the charging voltage of the i-th energy storage element, I ci is the charging current of the i-th energy storage element, Q is the rated capacity of the energy storage element, ti2 is the discharge time of the i-th energy storage element, U oi is the discharge voltage of the i-th energy storage element, I oi is the discharge current of the i-th energy storage element, η is the discharge conversion coefficient;

[0026] Step 2: Data processing model comparison W b and W b0 , when W b <W b0 When, according to W b Calculate the cooling adjustment factor L of the energy storage element c :

[0027] Where L c is the cooling adjustment coefficient of the energy storage element, exp is the natural logarithm, and its value is 2.71828, W b0 is the minimum working coefficient reference value;

[0028] Step 3: The control module controls the execution module according to L c The baseline adjusts the cycle efficiency of the cooling component. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0031] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0032] Figure 3 The structure of the present invention is schematically shown Figure 3 ;

[0033] Figure 4 is a schematic structural diagram of the contact structure of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the dust removal structure of the present invention;

[0035] Figure 6 For the present invention Figure 2 A partial enlarged view of point A.

[0036] In the figure: 1. Grid-connected inverter; 11. Energy storage element; 2. Storage and discharge cabinet; 21. Cabinet; 22. Partition; 23. Cable trough; 24. Cable connection port; 25. Cabinet door; 3. Contact structure; 31. Wiring board; 32. Contact terminal; 33. Insulating flame-retardant sleeve; 34. Balance bar; 35. Pressing bar; 36. Reciprocating sleeve; 37. Compression elastic member; 38. Limiting slide column; 39. Limiting groove; 4. Heat dissipation component; 41. Wind chamber; 42. Cooling fan; 43. Cooling air duct; 44. Supplementary air duct; 45. Air inlet; 46. Heat exchange flow Channel; 47, Venturi tube section; 48, connection port; 5, circulating dust prevention component; 51, negative suction fan; 52, pipeline; 6, dust removal structure; 61, filter bin; 62, open slide; 63, dust collecting chamber; 64, tapered mouth; 65, cover plate; 66, dust filter; 67, handle; 7, collection component; 71, anti-corrosion collection trough; 72, inclined interface; 73, longitudinal glass strip; 74, elastic insulation material; 8, processing structure; 81, adsorption sleeve; 82, connecting channel; 83, basket; 84, adsorption material; 85, sealing cover; 86, hook. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0038] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The present invention provides the following embodiments

[0040] Example 1

[0041] The embodiment of the present invention provides a photovoltaic energy storage device, such as Figure 1-6As shown, it includes: a grid-connected inverter 1, which is installed behind a storage and discharge cabinet 2, the grid-connected inverter 1 is electrically connected to the storage and discharge cabinet 2, a plurality of energy storage elements 11 are arranged in the storage and discharge cabinet 2, the plurality of energy storage elements 11 are electrically connected to the storage and discharge cabinet 2, heat dissipation components 4 are arranged on both sides of the storage and discharge cabinet 2, a circulating dustproof component 5 is arranged on the top of the storage and discharge cabinet 2, and a collecting component 7 is arranged on the front side of the storage and discharge cabinet 2;

[0042] It also includes a battery status monitoring component, which is used to monitor the status of the energy storage element 11 and adjust the heat dissipation according to the monitoring structure.

[0043] The working principle and beneficial effects of the above technical solution are as follows: the electric energy generated by the photovoltaic module is transmitted to the storage and discharge cabinet 2, and the storage and discharge cabinet 2 charges a plurality of energy storage elements 11 until the energy storage element 11 is charged to the rated power. When the energy storage element 11 needs to be discharged, the energy storage element 11 transmits electric energy to the power grid through the grid-connected inverter 1 until the electric energy transmission is completed, and then the next round of charging is carried out. When the energy storage element 11 is charged and discharged, the heat dissipation component 4 uses the airflow to perform convection heat exchange on the energy storage element 11, and the circulating dustproof component 5 circulates and filters the gas in the storage and discharge cabinet 2 to achieve dust prevention. When the energy storage element 11 is damaged and leaks electrolyte, the collection component 7 collects the electrolyte.

[0044] The present invention utilizes the storage and discharge cabinet 2 to charge, discharge and store the energy storage element 11. This design can effectively protect the energy storage element 11 and avoid the influence of the external environment on the energy storage element 11. The heat dissipation component 4 realizes heat dissipation by externally circulating the storage and discharge cabinet 2. This design can effectively avoid the influence of the heat dissipation airflow on the energy storage element 11 and avoid the accumulation of dust in the storage and discharge cabinet 2 due to the flow of external airflow. The design of the circulating dustproof component 5 can achieve the purpose of dust prevention through the airflow circulation inside the storage and discharge cabinet 2. The design of the heat dissipation component 4 and the circulating dustproof component 5 dissipates heat and removes dust from the energy storage element 11 through internal and external double circulation, does not interfere with each other, and operates stably. The collection component 7 ensures that when the energy storage element 11 is damaged, the electrolyte will not damage all the energy storage elements 11 and the storage and discharge cabinet 2, thereby ensuring the stable operation of the energy storage device. At the same time, the design of the battery monitoring component ensures the health of the operating state of the energy storage element 11 and ensures the constant energy storage efficiency.

[0045] Example 2

[0046] On the basis of Example 1, the storage and discharge cabinet 2 includes a cabinet body 21, a plurality of partitions 22 are fixedly connected inside the cabinet body 21, energy storage elements 11 are slidably connected between the plurality of partitions 22, contact structures 3 are arranged between the plurality of partitions 22, a grid-connected inverter 1, a cable trough 23 and a cable connection port 24 are arranged on the back of the cabinet body 21 from top to bottom, the cable trough 23 is bolted to the cabinet body 21, a cable is arranged in the cable trough 23, the input and output ends of the plurality of contact structures 3 are respectively connected to the cable connection port 24 and the grid-connected inverter 1 through cables, a cabinet door 25 is hingedly connected to the front side of the cabinet body 21, and a heat dissipation component 4 is arranged at the bottom of the cabinet body 21.

[0047] The contact structure 3 includes a wiring disk 31, which is bolted to the cabinet 21. A contact terminal 32 is fixedly connected to the wiring disk 31. The contact terminal 32 cooperates with the contact socket of the energy storage element 11. An insulating flame-retardant sleeve 33 is provided on the outer sleeve of the wiring disk 31. The contact terminal 32 passes through and is slidably connected to the end face of the insulating flame-retardant sleeve 33. The insulating flame-retardant sleeve 33 and the energy storage element 11 abut against each other. Balance rods 34 are fixedly connected to both ends of the insulating flame-retardant sleeve 33. The balance rod 34 is rotatably connected to a pressing rod 35. The pressing rod 35 is slidably connected in a reciprocating sleeve 36. A compression elastic member 37 is provided between the pressing rod 35 and the reciprocating sleeve 36. A limiting slide column 38 is symmetrically provided on the pressing rod 35. A limiting groove 39 is surrounded by the inner wall of the reciprocating sleeve 36. The limiting slide column 38 is slidably connected in the limiting groove 39.

[0048] The working principle and beneficial effects of the above technical solution are as follows: when the energy storage element 11 is placed in the cabinet body 21, the cabinet door 25 is opened, and the energy storage element 11 slides along the partition 22 until the energy storage element 11 contacts the insulating flame-retardant sleeve 33. The insulating flame-retardant sleeve 33 slides along the wiring disk 31 under the action of the energy storage element 11, so that the contact terminal 32 slides out of the insulating flame-retardant sleeve 33 relatively, and the contact terminal 32 is inserted into the contact socket of the energy storage element 11 until the insulating flame-retardant sleeve 33 abuts against the wiring disk 31. The energy storage element 11 stops sliding, and at the same time, the insulating flame-retardant sleeve 33 drives the balance rod 34 to slide when sliding. The balance rod 34 makes the pressing rod 35 slide in the reciprocating sleeve 36 and squeezes the compression elastic member 37. During the sliding process of the pressing rod 35, the limiting slide column 38 slides along the limiting groove 39. When the limiting slide column 38 slides to the bottom of the limiting groove 39 , under the guidance of the limiting groove 39, the pressing rod 35 rotates so that the limiting slide 38 and the limiting groove 39 are nested, and then the cable connection port 24 is connected to the photovoltaic module for charging. After the electric energy is transmitted to the wiring board 31 through the cable in the cable groove 23, it is input into the energy storage element 11 through the contact terminal 32. The cabinet body 21 operates the energy storage element 11 after the cabinet door 25 is opened and closed. When the energy storage element 11 needs to be taken out, the energy storage element 11 is pressed to push the insulating flame-retardant sleeve 33 to slide along the wiring board 31. At the same time, the balance rod 34 acts on the pressing rod 35 to slide in the reciprocating sleeve 36, so that the limiting slide 38 slides to the bottom of the limiting groove 39, so that the pressing rod 35 rotates, and the locking of the limiting slide 38 and the limiting groove 39 is released. Under the action of the compression elastic member 37, the pressing rod 35 and the insulating flame-retardant sleeve 33 are reset, and the contact terminal 32 is separated from the energy storage element 11;

[0049] The present invention utilizes a cabinet body 21 and a partition 22 to place the energy storage element 11. This design can ensure that the energy storage elements 11 are stacked in sequence in the cabinet body, thereby enhancing the storage and discharge capacity of the storage and discharge cabinet 2 and reducing the influence between the energy storage elements 11. At the same time, the design of the wiring tray 31 and the insulating flame-retardant sleeve 33 can protect the contact terminal 32 and avoid short circuit when the contact terminal 32 contacts other conductive objects. The design of the balance rod 34 and the pressing rod 35 can enable the insulating flame-retardant sleeve 33 to slide and reset on the wiring tray 31, and can be locked in conjunction with the limiting slide column 38 and the limiting groove 39 to ensure the continuity of the connection between the energy storage element 11 and the contact terminal 32.

[0050] Example 3

[0051] On the basis of Example 1, the heat dissipation component 4 includes a wind chamber 41, which is arranged at the bottom of the cabinet 21. A plurality of heat dissipation fans 42 are arranged in the wind chamber 41, and the plurality of heat dissipation fans 42 are bolted to the cabinet 21. A heat dissipation duct 43 is bolted to one side of the cabinet 21, and a supplementary duct 44 is bolted to the other side of the cabinet 21. The heat dissipation duct 43 is connected to the wind chamber 41, and an air inlet 45 is arranged on the other side of the wind chamber 41. A heat exchange flow channel 46 is arranged in the partition 22, and a plurality of Venturi tube sections 47 are arranged on the heat dissipation duct 43. The side input end of the Venturi tube section 47 passes through and is installed on the cabinet 21. A plurality of connecting ports 48 are arranged on the supplementary air duct 44, and the connecting ports 48 pass through and are installed on the cabinet 21. The Venturi tube sections 47 and the connecting ports 48 correspond one-to-one to the heat exchange flow channel 46 and are connected to each other.

[0052] The beneficial effects of the above technical solution are as follows: when the energy storage element 11 is cooled, the cooling fan 42 is started, and the air is sucked in from the air inlet 45 and rises along the cooling air duct 43. When the air flows through the Venturi tube section 47, the flow velocity increases and the pressure decreases, so that a negative pressure is generated at the side input end of the Venturi tube section 47, and the air in the heat exchange flow channel 46 is sucked into the Venturi tube section 47 and then discharged along the cooling air duct 43. At the same time, the air in the supplementary air duct 44 is supplemented into the heat exchange flow channel 46 under the action of atmospheric pressure, forming a heat exchange circulation loop, and the flowing air continuously takes away the heat transferred from the energy storage element 11 to the partition 22;

[0053] The present invention utilizes the Venturi effect to form a whole heat exchange flow cycle between the heat dissipation duct 43 and the supplementary duct 44. This design can continuously remove heat through convection and has a high heat exchange efficiency. At the same time, the heat exchange convection does not pass through the interior of the cabinet 21. Through the external circulation of heat conduction, it can minimize the impact of suspended matter carried by the airflow on the energy storage element 11, thereby avoiding the accumulation of dust in the cabinet 21.

[0054] Example 4

[0055] Based on Example 1, the circulating dust prevention component 5 includes a negative suction fan 51, which is bolted on the top of the cabinet 21, and the input end of the negative suction fan 51 is connected to the dust removal structure 6, which is bolted on the top of the cabinet 21. The output end of the negative suction fan 51 and the input end of the dust removal structure 6 are both connected to a pipe 52, and the two pipes 52 pass through and are connected to the cabinet 21.

[0056] The dust removal structure 6 includes a filter bin 61, an open slide 62 is provided on the filter bin 61, a dust collecting chamber 63 is slidably connected in the open slide 62, a tapered opening 64 is provided at the bottom of the dust collecting chamber 63, a cover plate 65 is hinged on the tapered opening 64, a dust removal filter 66 is nested in the dust collecting chamber 63, and a handle 67 is fixedly connected to the side wall of the dust collecting chamber 63.

[0057] The beneficial effects of the above technical solution are as follows: when the cabinet 21 is dust-removing, the negative suction fan 51 is started to extract the air in the front side of the cabinet 21. When the air passes through the filter bin 61, the pressure pushes open the cover 65 and enters from the tapered opening 64 of the dust collecting chamber 63. After the air passes through the dust filter 66, part of the dust particles fall into the bottom of the dust collecting chamber 63, and part of them adhere to the dust filter 66. After the purified air enters the negative suction fan 51, it flows from the output end through the pipe 52 into the rear side of the cabinet 21. Through this cycle, the air in the cabinet 21 is continuously purified. When the dust collecting chamber 63 is full of dust and the dust filter 66 fails, it can be pulled out through the handle 67 for timely cleaning and replacement.

[0058] The present invention utilizes the negative suction fan 51 to suck in air and then filters it through the dust removal structure 6. This design can filter the air in the cabinet 21 through circulation, thereby ensuring the working environment of the energy storage element 11, and circulates air inside the cabinet 21, thereby reducing the entry of dust carried by external air. At the same time, the dust collecting chamber 63 adopts a detachable design, which can be replaced in time after the filtering capacity is overloaded, thereby ensuring the stability of the dust removal effect.

[0059] Example 5

[0060] On the basis of Example 1, the collection component 7 includes an anti-corrosion collection groove 71, which is fixedly connected to the cabinet door 25. A plurality of inclined interfaces 72 are provided on the anti-corrosion collection groove 71. A longitudinal glass strip 73 is provided on the side of the anti-corrosion collection groove 71. The inclined interface 72 is wrapped with an elastic insulating material 74. The elastic insulating material 74 slides relative to the partition 22. A processing structure 8 is provided at the bottom of the cabinet door 25.

[0061] The processing structure 8 includes an adsorption sleeve 81, which is fixedly connected to the cabinet door 25. The adsorption sleeve 81 is connected to the anti-corrosion collection tank 71 through a connecting channel 82. A basket 83 is nested in the adsorption sleeve 81, and an adsorption material 84 is nested in the basket 83. A sealing cover 85 is threadedly connected to the top of the adsorption sleeve 81, and a hook 86 is threadedly connected to the sealing cover 85. The hook 86 and the basket 83 cooperate with each other.

[0062] The beneficial effects of the above technical solution are as follows: when the energy storage element 11 is broken and the electrolyte leaks, the electrolyte flows along the partition 22 and falls into the inclined interface 72 below the partition 22, and then the electrolyte enters the anti-corrosion collection tank 71. The elastic insulating material 74 prevents the electrolyte from seeping from below the partition 22. The longitudinal glass strip 73 is used for the operator to observe the accumulation of the electrolyte. The electrolyte enters the adsorption sleeve 81 through the connecting channel 82 in the anti-corrosion collection tank 71. The adsorption material 84 in the adsorption sleeve 81 adsorbs the electrolyte. When the adsorption material 84 is consumed, the operator rotates the sealing cover 85, and then lifts the basket 83 and the adsorption material 84 through the sealing cover 85, and then replaces the new adsorption material 84 and loads it into the adsorption sleeve 81.

[0063] The present invention utilizes an inclined interface 72 and an anti-corrosion collection tank 71 to collect electrolyte. This design can prevent the electrolyte from flowing out after a single energy storage element 11 is damaged and causing damage to all energy storage elements 11 and the cabinet 21, thereby ensuring the stable operation of the energy storage element 11 and the cabinet 21. The design of the adsorption sleeve 81 and the adsorption material 84 can absorb the electrolyte and prevent the electrolyte from accumulating in the anti-corrosion collection tank 71 and emitting toxic gases. At the same time, the design of the sealing cover 85 and the lifting basket 83 facilitates the operator to lift out and replace the adsorption material 84.

[0064] Example 6

[0065] On the basis of Example 1, the battery status monitoring component includes a control module, a data processing module, a detection module and an execution module, and the detection module includes:

[0066] Several pressure sensors: used to detect the pressure of the energy storage element 11 on the upper and lower partitions 22, which are arranged on the partitions 22;

[0067] Several current sensors: used to detect the charge and discharge current of the energy storage element 11, which are arranged on the contact structure 3;

[0068] Several voltage sensors: used to detect the charge and discharge voltage of the energy storage element 11, which are arranged on the contact structure 3;

[0069] Several time sensors: used to detect the charging and discharging time of the energy storage element 11, which are arranged on the contact structure 3;

[0070] Several temperature sensors 1: used to detect the heating temperature of the energy storage element 11, which are arranged on the partition 22;

[0071] Temperature sensor 2: used to detect the ambient temperature in the cabinet 21, and disposed in the cabinet 21;

[0072] Humidity sensor: used to detect the ambient humidity in the cabinet 21, and disposed in the cabinet 21;

[0073] The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution module to work based on the data results of the data processing module.

[0074] The control module controls the execution module based on the data results of the data processing module, including the following steps:

[0075] Step 1: Calculate the working coefficient W of the energy storage element 11 based on the pressure sensor, current sensor, voltage sensor, time sensor, temperature sensor 1, temperature sensor 2 and humidity sensor b :

[0076] Where W b is the working coefficient of the energy storage element 11, κ is the compensation coefficient, H y is the detection value of the humidity sensor, T is the detection value of the temperature sensor 2, F i is the detection value of the pressure sensor of the i-th energy storage element 11, G is the weight of the energy storage element 11, T i is the detection value of the temperature sensor 1 of the i-th energy storage element 11, T0 is the optimal working temperature of the energy storage element 11, t i1 is the charging time of the i-th energy storage element 11, U ci is the charging voltage of the i-th energy storage element 11, I ci is the charging current of the i-th energy storage element 11, Q is the rated capacity of the energy storage element 11, t i2 is the discharge time of the i-th energy storage element 11, U oi is the discharge voltage of the i-th energy storage element 11, I oi is the discharge current of the i-th energy storage element 11, and η is the discharge conversion coefficient;

[0077] Step 2: Data processing model comparison W b and W b0 , when W b <W b0 When, according to W b Calculate the cooling adjustment coefficient L of the energy storage element 11 c :

[0078] Where L c is the cooling adjustment coefficient of the energy storage element 11, exp is the natural logarithm, and its value is 2.71828, W b0 is the minimum working coefficient reference value;

[0079] Step 3: The control module controls the execution module according to L c Baseline adjustment of the cooling component 4 cycle efficiency

[0080] The beneficial effects of the above technical solution are as follows: since the energy storage element 11 is affected by the external environment when working, it will cause its charging and discharging efficiency to decrease, its own temperature to increase, and its own volume to change. Therefore, by monitoring the state of the energy storage element 11, when it is found that the working state of the energy storage element 11 changes, the external environment is adjusted in time to make the energy storage element 11 operate stably;

[0081] The present invention utilizes a control module, a data processing module, a detection module and an execution module to monitor the energy storage element 11 and timely adjust the working environment. This design can ensure the stable operation of the energy storage element 11 and improve the energy utilization efficiency.

[0082] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A photovoltaic energy storage device, characterized in that: include: A grid-connected inverter (1), the grid-connected inverter (1) is installed behind a storage and discharge cabinet (2), the grid-connected inverter (1) and the storage and discharge cabinet (2) are electrically connected, a plurality of energy storage elements (11) are arranged in the storage and discharge cabinet (2), the plurality of energy storage elements (11) and the storage and discharge cabinet (2) are electrically connected, heat dissipation components (4) are arranged on both sides of the storage and discharge cabinet (2), a circulating dust prevention component (5) is arranged on the top of the storage and discharge cabinet (2), and a collecting component (7) is arranged on the front side of the storage and discharge cabinet (2); It also includes a battery status monitoring component, which is used to monitor the status of the energy storage element (11) and adjust the heat dissipation according to the monitoring structure.

2. A photovoltaic energy storage device according to claim 1, characterized in that: The storage and discharge cabinet (2) comprises a cabinet body (21), a plurality of partitions (22) are fixedly connected in the cabinet body (21), energy storage elements (11) are slidably connected between the plurality of partitions (22), contact structures (3) are arranged between the plurality of partitions (22), a grid-connected inverter (1), a cable trough (23) and a cable connection port (24) are arranged in sequence from top to bottom on the back of the cabinet body (21), the cable trough (23) is bolted to the cabinet body (21), a cable is arranged in the cable trough (23), input ends and output ends of the plurality of contact structures (3) are respectively connected to the cable connection port (24) and the grid-connected inverter (1) through cables, a cabinet door (25) is hingedly connected to the front side of the cabinet body (21), and a heat dissipation component (4) is arranged at the bottom of the cabinet body (21).

3. A photovoltaic energy storage device according to claim 2, characterized in that: The contact structure (3) comprises a wiring board (31), the wiring board (31) is bolted to the cabinet (21), a contact terminal (32) is fixedly connected to the wiring board (31), the contact terminal (32) and the contact socket of the energy storage element (11) cooperate with each other, an insulating flame retardant sleeve (33) is provided on the wiring board (31), the contact terminal (32) penetrates and is slidably connected to the end surface of the insulating flame retardant sleeve (33), the insulating flame retardant sleeve (33) and the energy storage element (11) are mutually abutted, and the insulating flame retardant sleeve (33) and the energy storage element (11) are mutually abutted. The two ends of the flame retardant sleeve (33) are fixedly connected with a balance rod (34), the balance rod (34) is rotatably connected with a pressing rod (35), the pressing rod (35) is slidably connected in the reciprocating sleeve (36), a compression elastic member (37) is provided between the pressing rod (35) and the reciprocating sleeve (36), a limiting slide column (38) is symmetrically provided on the pressing rod (35), a limiting groove (39) is surrounded on the inner wall of the reciprocating sleeve (36), and the limiting slide column (38) is slidably connected in the limiting groove (39).

4. A photovoltaic energy storage device according to claim 1, characterized in that: The heat dissipation assembly (4) comprises a wind chamber (41), the wind chamber (41) is arranged at the bottom of the cabinet (21), a plurality of heat dissipation fans (42) are arranged in the wind chamber (41), the plurality of heat dissipation fans (42) are all bolted to the cabinet (21), a heat dissipation duct (43) is bolted to one side of the cabinet (21), a supplementary duct (44) is bolted to the other side of the cabinet (21), the heat dissipation duct (43) is connected to the wind chamber (41), and an air inlet (44) is arranged on the other side of the wind chamber (41) A heat exchange flow channel (46) is provided in the partition (22), a plurality of Venturi tube sections (47) are provided on the heat dissipation air channel (43), the side input end of the Venturi tube section (47) penetrates and is installed on the cabinet (21), a plurality of connecting ports (48) are provided on the supplementary air channel (44), the connecting ports (48) penetrate and are installed on the cabinet (21), and the Venturi tube sections (47) and the connecting ports (48) correspond to the heat exchange flow channels (46) one by one and are interconnected.

5. A photovoltaic energy storage device according to claim 1, characterized in that: The circulating dust prevention component (5) comprises a negative suction fan (51), which is bolted to the top of the cabinet (21), an input end of the negative suction fan (51) is connected to a dust removal structure (6), and the dust removal structure (6) is bolted to the top of the cabinet (21), and the output end of the negative suction fan (51) and the input end of the dust removal structure (6) are both connected to pipes (52), and the two pipes (52) penetrate and are connected to the cabinet (21).

6. A photovoltaic energy storage device according to claim 5, characterized in that: The dust removal structure (6) comprises a filter bin (61), an open slideway (62) is provided on the filter bin (61), a dust collecting chamber (63) is slidably connected in the open slideway (62), a tapered opening (64) is provided at the bottom of the dust collecting chamber (63), a cover plate (65) is hingedly connected to the tapered opening (64), a dust removal filter (66) is nested and connected in the dust collecting chamber (63), and a handle (67) is fixedly connected to the side wall of the dust collecting chamber (63).

7. A photovoltaic energy storage device according to claim 1, characterized in that: The collecting assembly (7) comprises an anti-corrosion collecting trough (71), the anti-corrosion collecting trough (71) is fixedly connected to the cabinet door (25), a plurality of inclined interfaces (72) are provided on the anti-corrosion collecting trough (71), a longitudinal glass strip (73) is provided on the side of the anti-corrosion collecting trough (71), an elastic insulating material (74) is wrapped on the inclined interface (72), the elastic insulating material (74) and the partition (22) slide relative to each other, and a processing structure (8) is provided at the bottom of the cabinet door (25).

8. A photovoltaic energy storage device according to claim 7, characterized in that: The processing structure (8) comprises an adsorption sleeve (81), the adsorption sleeve (81) is fixedly connected to the cabinet door (25), the adsorption sleeve (81) is connected to the anti-corrosion collection tank (71) through a connecting channel (82), a basket (83) is nested in the adsorption sleeve (81), an adsorption material (84) is nested in the basket (83), a sealing cover (85) is threadedly connected to the top of the adsorption sleeve (81), a hook (86) is threadedly connected to the sealing cover (85), and the hook (86) and the basket (83) cooperate with each other.

9. A photovoltaic energy storage device according to claim 1, characterized in that: The battery status monitoring component includes a control module, a data processing module, a detection module and an execution module. The detection module includes: A plurality of pressure sensors: used to detect the pressure of the energy storage element (11) on the upper and lower partitions (22), and arranged on the partitions (22); A plurality of current sensors: used for detecting the charge and discharge current of the energy storage element (11), which are arranged on the contact structure (3); A plurality of voltage sensors: used for detecting the charging and discharging voltage of the energy storage element (11), which are arranged on the contact structure (3); A plurality of time sensors: used for detecting the charging and discharging time of the energy storage element (11), which are arranged on the contact structure (3); A plurality of temperature sensors 1: used to detect the heating temperature of the energy storage element (11), which are arranged on the partition (22); Temperature sensor 2: used for detecting the ambient temperature inside the cabinet (21), and disposed inside the cabinet (21); Humidity sensor: used for detecting the ambient humidity in the cabinet (21), and arranged in the cabinet (21); The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution module to work based on the data results of the data processing module.

10. A photovoltaic energy storage device according to claim 9, characterized in that: The control module controls the execution module based on the data results of the data processing module, including the following steps: Step 1: Calculate the working coefficient W of the energy storage element (11) based on the pressure sensor, current sensor, voltage sensor, time sensor, temperature sensor 1, temperature sensor 2 and humidity sensor b : Where W b is the working coefficient of the energy storage element (11), κ is the compensation coefficient, H y is the detection value of the humidity sensor, T is the detection value of the temperature sensor 2, F i is the detection value of the pressure sensor of the i-th energy storage element (11), G is the weight of the energy storage element (11), T i is the detection value of the temperature sensor 1 of the i-th energy storage element (11), T0 is the optimal operating temperature of the energy storage element (11), t i1 is the charging time of the i-th energy storage element (11), U ci is the charging voltage of the i-th energy storage element (11), I ci is the charging current of the i-th energy storage element (11), Q is the rated capacity of the energy storage element (11), t i2 is the discharge time of the i-th energy storage element (11), U oi is the discharge voltage of the i-th energy storage element (11), I oi is the discharge current of the i-th energy storage element (11), and η is the discharge conversion coefficient; Step 2: Data processing model comparison W b and W b0 , when W b <W b0 When, according to W b Calculate the cooling adjustment coefficient L of the energy storage element (11) c : Where L c is the cooling adjustment coefficient of the energy storage element (11), exp is the natural logarithm, and its value is 2.71828, W b0 is the minimum working coefficient reference value; Step 3: The control module controls the execution module according to L c The base adjusts the cycle efficiency of the heat dissipation component (4).

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