Energy storage device for photovoltaic power station
By designing efficient cooling components in energy storage devices for photovoltaic power plants, the internal resistance and capacity differences caused by poor heat dissipation effect of existing photovoltaic energy storage equipment and the operation of batteries in environments with large temperature differences are solved, and more efficient cooling is achieved The effect improves the performance and life of the energy storage system and reduces safety hazards.
Patent Information
- Application Number
- CN202420441740.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The existing photovoltaic energy storage equipment has large volume weight, poor portability, and insufficient internal structure design and layout, resulting in poor heat dissipation effect. The operation of the battery in an environment with large temperature difference will lead to differences in internal resistance and capacity, which may cause some batteries to overcharge. Or over-discharge affects the performance and life of the energy storage system and poses safety hazards.
A energy storage device for photovoltaic power stations is designed, using an energy storage shell composed of a rectangular plate on the circumferential side, and cooling components are installed inside it, including a bottom cold rod, a sleeve shaft, a liquid pipe, cooling fins and a water distributor , through the single-side circulation design of opening a refrigerant tank and a liquid pipe on the surface of the cooling fins, an efficient cooling effect is achieved.
Through efficient cooling design, the internal resistance and capacity difference between the batteries is avoided, the risk of overcharge or over-discharge of some batteries is reduced, the performance and life of the energy storage system is improved, and safety hazards are reduced.
Smart Images
Figure CN222440672U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage photovoltaic power stations, in particular to an energy storage device for photovoltaic power stations. Background Art
[0002] Photovoltaic power generation, as one of the many uses of solar energy resources, has been widely used in people's lives today. At present, most photovoltaic energy storage devices are large in size and weight, with poor portability, and the internal structure design and layout are not optimized, which also has some adverse effects on the internal heat dissipation effect.
[0003] At present, the battery packs in the energy storage device are generally arranged side by side as described above, but the local heat in the box is difficult to discharge evenly, and there are large differences in the battery operating environment. The long-term operation of the battery pack in an environment with a large temperature difference will lead to serious differences in internal resistance and capacity between the batteries, which may cause some batteries to be overcharged or over-discharged, affecting the performance and life of the energy storage system, and even causing serious safety hazards. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an energy storage device for a photovoltaic power station, which avoids the problem that long-term operation may cause serious differences in internal resistance and capacity between batteries, which may cause overcharging or over-discharging of some batteries and affect the performance and life of the energy storage system.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: an energy storage device for a photovoltaic power station includes an energy storage shell, the energy storage shell is composed of a peripheral rectangular plate, a top cold plate is fixedly installed on the upper surface of the energy storage shell by bolts, a bearing portion is provided at the edge of one side surface of the top cold plate, the bearing portion at the rear end of the top cold plate is fixedly connected to the back side of the energy storage shell, a receiving cavity is provided inside the energy storage shell, a cooling assembly is fixedly installed on one side of the cavity of the energy storage shell; the cooling assembly includes a bottom cold rod fixedly installed on the inner cavity of the energy storage shell, a sleeve shaft is penetrated and connected at the edge of one side of the upper surface of the bottom cold rod, a liquid distribution pipe is penetrated and connected on the upper surface of the sleeve shaft, and one end of the liquid distribution pipe is penetrated and connected with a cooling fin through the sleeve shaft.
[0006] Optionally, a refrigerant groove is provided on the surface of the cooling fin. The number of the cooling fins is several and they are evenly distributed in the form of a longitudinal array. The liquid distribution pipe passes through the outer arc surface of the cooling fin and is connected to a middle cold rod. The refrigerant groove is provided on the surface of the cooling fin. When air circulates, the refrigerant groove can not only cool the air when it passes through the air, but also the cooling fins themselves can be better affected by the air circulation to improve the cooling efficiency, thereby avoiding long-term operation will lead to serious differences in internal resistance and capacity between batteries, may cause some batteries to be overcharged or over-discharged, affect the performance and life of the energy storage system, and serious safety hazards may also be caused.
[0007] Optionally, one end of the liquid distribution pipe passes through the end of the cooling fin and is connected to a refrigerant interface. A water distributor is fixedly installed on one side surface of the refrigerant interface. There are two water distributors, which are distributed in a mirror-symmetrical manner.
[0008] Optionally, a through groove is provided on the top of one side surface of the middle section cold rod, and the through groove on the top of the middle section cold rod is adapted to the outer arc surface of the liquid distribution pipe, and a refrigerant through pipe is connected to the refrigerant interface at the bottom of the front end of one of the water distributors.
[0009] Optionally, one end of the refrigerant pipe passes through the outer arc surface of the liquid distribution pipe, and refrigerant interfaces are provided on both sides of the water distributor.
[0010] Optionally, one end of the liquid distribution pipe is connected to one of the refrigerant interfaces, and the other end of the liquid distribution pipe is connected to the other refrigerant interface to form a unilateral circulation. One end of the liquid distribution pipe is connected to the refrigerant interface on the other side of the water distributor, thereby realizing unilateral circulation. The water distributors on both sides are connected in the same way, so that the circulation on both sides can not only dissipate heat and cool the cooling fins connected through the connection on the other side when heat occurs on one side, thereby always maintaining the same temperature, avoiding the problem of local heat in the box being difficult to discharge evenly, and large differences in the battery operating environment.
[0011] Optionally, a through slot is provided on the front rectangular plate of the energy storage shell 1 , and a resistor element 4 is connected through the through slot of the energy storage shell 1 .
[0012] The utility model provides an energy storage device for a photovoltaic power station, which has the following beneficial effects:
[0013] 1. The surface of the cooling fins is provided with a refrigerant groove, which can not only cool the air when passing through the refrigerant groove, but also improve the cooling efficiency under the influence of air circulation, thereby avoiding long-term operation will lead to serious differences in internal resistance and capacity between batteries, which may cause overcharge or over-discharge of some batteries, affecting the performance and life of the energy storage system, and even causing safety hazards in severe cases.
[0014] 2. One end of the liquid distribution pipe will be connected to the refrigerant interface on the other side of the water distributor, so as to realize one-sided circulation, and the water distributors on both sides are connected in the same way, so that the circulation on both sides can not only dissipate heat on the cooling fins connected on the other side when heat occurs on one side, so as to always maintain the same temperature, avoid the problem that the local heat in the box is difficult to discharge evenly, and there will be large differences in the battery operating environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0016] Figure 1 It is a schematic diagram of the overall expanded structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the cooling assembly structure of the utility model;
[0018] Figure 3 It is a partial structural schematic diagram of the utility model;
[0019] Figure 4 It is a schematic diagram of the planar structure of the utility model.
[0020] In the figure: 1. Energy storage shell; 2. Top cold plate; 3. Cooling assembly; 301. Bottom cold rod; 302. Sleeve shaft; 303. Liquid distribution pipe; 304. Cooling fins; 305. Refrigerant tank; 306. Refrigerant interface; 307. Water distributor; 308. Middle cold rod; 309. Refrigerant passage pipe; 4. Resistance element. DETAILED DESCRIPTION
[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0022] See also Figures 1 to 4 The utility model provides a technical solution: an energy storage device for a photovoltaic power station, including an energy storage shell 1, the energy storage shell 1 is composed of a peripheral rectangular plate, a top cold plate 2 is fixedly installed on the upper surface of the energy storage shell 1 by bolts, a bearing portion is provided at the edge of one side surface of the top cold plate 2, the bearing portion at the rear end of the top cold plate 2 is fixedly connected to the back of the energy storage shell 1, a receiving cavity is provided inside the energy storage shell 1, a cooling assembly 3 is fixedly installed on one side of the cavity of the energy storage shell 1, and the cooling assembly 3 includes a cooling assembly fixedly installed on the energy storage shell A bottom cooling rod 301 is provided on the inner cavity, a sleeve shaft 302 is penetrated and connected at one edge of the upper surface of the bottom cooling rod 301, a liquid distribution pipe 303 is penetrated and connected to the upper surface of the sleeve shaft 302, one end of the liquid distribution pipe 303 is penetrated and connected to a cooling fin 304 through the sleeve shaft 302, a refrigerant groove 305 is provided on the surface of the cooling fin 304, the number of cooling fins 304 is several and evenly distributed in the form of a longitudinal array, and the liquid distribution pipe 303 penetrates the outer arc surface of the cooling fin 304 and is penetrated and connected to a middle section cooling rod 308.
[0023] The surface of the cooling fin 304 is provided with a refrigerant groove 305, which can not only cool the air when passing through the refrigerant groove 305, but also the cooling fin 304 itself can be better affected by the air circulation to improve the cooling efficiency, thereby avoiding long-term operation will lead to serious differences in internal resistance and capacity between batteries, may cause some batteries to be overcharged or over-discharged, affect the performance and life of the energy storage system, and serious safety hazards may also be caused.
[0024] One end of the liquid distribution pipe 303 passes through the end of the cooling fin 304 and is connected with a refrigerant interface 306. A water distributor 307 is fixedly installed on one side surface of the refrigerant interface 306. There are two water distributors 307, which are distributed in a mirror-symmetrical manner. A through groove is opened on the top of one side surface of the middle cold rod 308. The through groove on the top of the middle cold rod 308 is adapted to the outer arc surface of the liquid distribution pipe 303. A refrigerant pipe 309 is connected to the refrigerant interface 306 at the bottom of the front end of one of the water distributors 307. One end of the refrigerant pipe 309 passes through the outer arc surface of the liquid distribution pipe 303. Refrigerant interfaces 306 are provided on both sides of the water distributor 307. One end of the liquid distribution pipe 303 is connected to one of the refrigerant interfaces 306, and the other end of the liquid distribution pipe 303 is connected to the other refrigerant interface 306, thereby forming a single-sided circulation.
[0025] One end of the liquid distribution pipe 303 will be connected to the refrigerant interface 306 on the other side of the water distributor 307, so as to realize one-sided circulation, and the water distributors 307 on both sides are connected in the same way, so that the circulation on both sides can not only dissipate heat on the cooling fins 304 connected on the other side when heat occurs on one side, so as to always maintain the same temperature, avoid the problem that the local heat in the box is difficult to be discharged evenly, and there will be a large difference in the battery operating environment.
[0026] A through slot is provided on the front rectangular plate of the energy storage housing 1, and a resistor element 4 is connected through the through slot of the energy storage housing 1.
[0027] In the utility model, the working steps of the device are as follows:
[0028] Since the energy storage shell 1 is fixed by bolts on all sides, heat dissipation grooves are opened around it, and the resistance element 4 is an integral whole inside, and effective heat dissipation cannot be achieved only by the heat dissipation grooves. The bottom cooling rod 301 is fixedly installed at the bottom of the energy storage shell 1, and two water distributors 307 are placed on both sides of the bottom cooling rod 301 respectively, and sleeve shafts 302 are connected at the opposite edges of the two bottom cooling rods 301. The connected sleeve shafts 302 pass through the connecting liquid distribution pipe 303, and one end of the liquid distribution pipe 303 passes through and is connected to the refrigerant interface 306 on the other side of the water distributor 307, thereby realizing unilateral circulation, and the water distributors 307 on both sides are connected in the same way, so that the circulation on both sides is not only When heat occurs on one side, the cooling fins 304 connected through it can be used for heat dissipation and cooling on the other side, so as to always maintain the same temperature. The outer arc surface of the liquid distribution pipe 303 is connected to the cooling fins 304, and the surface of the cooling fins 304 is provided with refrigerant grooves 305. When air circulates, the refrigerant grooves 305 can not only cool the air when it passes through, but also the cooling fins 304 themselves can be better affected by the air circulation to improve the cooling efficiency, thereby avoiding long-term operation resulting in serious differences in internal resistance and capacity between batteries, which may cause overcharging or over-discharging of some batteries, affecting the performance and life of the energy storage system, and in severe cases, causing safety hazards.
[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An energy storage device for a photovoltaic power station, comprising an energy storage housing (1), characterized in that: The energy storage shell (1) is composed of a peripheral rectangular plate, a top cold plate (2) is fixedly mounted on the upper surface of the energy storage shell (1) by means of bolts, a bearing portion is provided at the edge of one side surface of the top cold plate (2), the bearing portion at the rear end of the top cold plate (2) is fixedly connected to the back side of the energy storage shell (1), a receiving cavity is provided inside the energy storage shell (1), and a cooling assembly (3) is fixedly mounted on one side of the cavity of the energy storage shell (1); The cooling assembly (3) comprises a bottom cooling rod (301) fixedly mounted on the inner cavity of the energy storage housing (1); a sleeve shaft (302) is connected through an edge of one side of the upper surface of the bottom cooling rod (301); a liquid distribution pipe (303) is connected through the upper surface of the sleeve shaft (302); and one end of the liquid distribution pipe (303) is connected through a cooling fin (304) via the sleeve shaft (302).
2. The energy storage device for a photovoltaic power station according to claim 1, characterized in that: The surface of the cooling fin (304) is provided with a refrigerant groove (305), the number of the cooling fins (304) is several and evenly distributed in the form of a longitudinal array, and the liquid distribution pipe (303) passes through the outer arc surface of the cooling fin (304) and is connected to a middle section cooling rod (308).
3. The energy storage device for a photovoltaic power station according to claim 2, characterized in that: One end of the liquid distribution pipe (303) passes through the end of the cooling fin (304) and is connected to a refrigerant interface (306). A water distributor (307) is fixedly installed on one side surface of the refrigerant interface (306). There are two water distributors (307) which are distributed in a mirror-symmetrical manner.
4. The energy storage device for a photovoltaic power station according to claim 3, characterized in that: A through groove is provided on the top of one side surface of the middle section cold rod (308), and the through groove on the top of the middle section cold rod (308) is adapted to the outer arc surface of the liquid distribution pipe (303), and a refrigerant through pipe (309) is connected through the refrigerant interface (306) at the bottom of the front end of one of the water distributors (307).
5. The energy storage device for a photovoltaic power station according to claim 4, characterized in that: One end of the refrigerant passage pipe (309) penetrates to the outer arc surface of the liquid distribution pipe (303), and refrigerant interfaces (306) are provided on both sides of the water distributor (307).
6. The energy storage device for a photovoltaic power station according to claim 5, characterized in that: One end of the liquid distribution pipe (303) is connected to one of the refrigerant interfaces (306), and the other end of the liquid distribution pipe (303) is connected to another refrigerant interface (306), thereby forming a single-sided circulation.
7. The energy storage device for a photovoltaic power station according to claim 1, characterized in that: A through slot is provided on the front rectangular plate of the energy storage housing (1), and a resistor element (4) is connected through the through slot of the energy storage housing (1).