A lithium battery dedicated for photovoltaic

Abstract

This utility model belongs to the field of photovoltaic lithium battery technology and discloses a photovoltaic-specific lithium battery, including a cell circuit board. A discharge management protection board and a charging protection board are inserted into both ends of the cell circuit board. Several cells are arranged in two rows at intervals and are in contact with the discharge management protection board and the charging protection board. A heating element is provided on the side of the discharge management protection board near the cells. A power output line is also connected to one side of the discharge management protection board, and a signal line and a charging line are connected to one side of the charging protection board. Several solder pads are provided on the side of both the discharge management protection board and the charging protection board away from the cells. This device has a simple structure, can be adapted to the controller of a photovoltaic bracket, improves the energy utilization rate of photovoltaic equipment, and the battery has a good service life and battery capacity.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology for photovoltaic applications, specifically a lithium battery for photovoltaic applications. Background Technology

[0002] Traditional photovoltaic power generation mostly adopts the DC power supply mode of the panels. However, the utilization of solar energy in the evening is precisely the efficiency gap that is overlooked in the traditional mode. In order to ensure that the photovoltaic support can capture the sunlight as soon as possible the next morning, the photovoltaic support needs to complete the turning action from west to east in the evening. When the support turns from west to east, the panels will be facing away from the sun. At this time, the power generation drops sharply. In order to ensure that the power generation of the panels can support the operation of the support to the maximum east angle, the turning procedure often needs to be started in advance when the sun is relatively high. This makes it difficult to utilize a lot of solar energy during the golden time of evening when it can generate electricity efficiently.

[0003] To improve power generation efficiency in the evening, backup batteries can be added to optimize the process. The photovoltaic support system continuously tracks the sun during the day until sunset, fully absorbing the last rays of sunlight. After nightfall, the controller uses backup batteries to power the support system and drive it to turn eastward. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a photovoltaic-specific lithium battery that can be adapted to the controller of the photovoltaic bracket, improve the energy utilization rate of the photovoltaic equipment, and has a good service life and battery capacity.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A photovoltaic-specific lithium battery includes a cell circuit board. A discharge management protection board and a charging protection board are inserted into both ends of the cell circuit board. A plurality of cells are arranged on the cell circuit board in two rows at intervals and are in contact with the discharge management protection board and the charging protection board. A heating element is provided on the side of the discharge management protection board near the cells. A power output line is also connected to one side of the discharge management protection board. A signal line and a charging line are connected to one side of the charging protection board. A plurality of solder pads are provided on the side of the discharge management protection board and the charging protection board away from the cells.

[0007] The following are further optimizations of the above technical solution by this utility model:

[0008] The thickness of the battery cell circuit board is 2.0mm. The structural strength of the battery cell circuit board can be further improved by increasing the thickness of the battery cell circuit board.

[0009] Further optimization: The discharge management protection board has several first slots, and the charging protection board has several second slots.

[0010] Further optimization: One end of the battery cell circuit board is provided with a plurality of first insert blocks corresponding to the first slot, and the other end of the battery cell circuit board is provided with a plurality of second insert blocks corresponding to the second slot.

[0011] Further optimization: Both the first and second plug blocks have pads, and the pads on the first and second plug blocks correspond to the pads on the discharge management protection board and the charging protection board, respectively.

[0012] Further optimization: The discharge management protection board and the charging protection board are provided with corresponding electronic components on the side away from the battery cell. The discharge management protection board is provided with a first groove on the side away from the first slot, and the charging protection board is provided with a second groove and a third groove on the side away from the second slot.

[0013] Further optimization: Insulation layers are provided on both sides of the battery cell near the discharge management protection board and the charging protection board. The heating element is located above the insulation layer near the discharge management protection board, and an insulation layer is also provided between the heating element and the discharge management protection board.

[0014] Further optimization: The charging protection board has a mounting surface on its side, and two mounting holes are provided on each mounting surface.

[0015] This utility model adopts the above-mentioned technical solution, with ingenious conception and reasonable structure. The designed cell and cell circuit board structure can improve the structural strength of the battery pack and avoid deformation of the battery pack after long-term use. In addition, this device can monitor and control the temperature of the battery pack. In extremely cold weather, the heating element ensures that the cell is always at the optimal working temperature before charging, thereby ensuring the working efficiency of the battery pack in low-temperature environments. This drives the bracket to rotate to complete the rotation of the photovoltaic bracket. The designed multiple grooves can straighten multiple functional lines into the grooves, preventing damage to the functional lines, thereby improving service life and facilitating use.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is a front view of an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the charging protection board according to an embodiment of the present utility model;

[0020] Figure 4 This is a top view of an embodiment of the present utility model;

[0021] Figure 5 for Figure 2 A magnified view of a portion of point A in the middle.

[0022] In the diagram: 1. Battery cell circuit board; 101. First insert; 102. Second insert; 2. Discharge management and protection board; 21. First slot; 3. Charging protection board; 31. Second slot; 4. Battery cell; 5. Heating element; 6. Insulation layer; 7. Power output line; 8. Signal line; 9. Charging line; 10. First groove; 11. Second groove; 12. Third groove; 13. Mounting surface; 14. Mounting hole. Detailed Implementation

[0023] like Figure 1-5 As shown: A photovoltaic-specific lithium battery includes a cell circuit board 1. A discharge management protection board 2 and a charging protection board 3 are inserted into both ends of the cell circuit board 1. A plurality of cells 4 are arranged on the cell circuit board 1 in two rows at intervals and are in contact with the discharge management protection board 2 and the charging protection board 3. A heating element 5 is provided on the side of the discharge management protection board 2 near the cell 4. A power output line 7 is also connected to one side of the discharge management protection board 2. A signal line 8 and a charging line 9 are connected to one side of the charging protection board 3. A plurality of solder pads are provided on the side of the discharge management protection board 2 and the charging protection board 3 away from the cell 4.

[0024] In this embodiment, the battery cell circuit board 1, the discharge management protection board 2, and the charging protection board 3 are all made of PCB board. The heating element 5 is used to ensure the temperature of the battery cell 4 and prevent cold weather from affecting the working status and capacity of the battery cell 4. The signal line 8 is an 8-core signal line, which can fully meet the signal transmission of multiple functions and is convenient to use.

[0025] In this embodiment, the upper and lower rows of the battery cell 4 are in contact with the discharge management protection board 2 and the charging protection board 3, thereby supporting the upper discharge management protection board 2. At the same time, the battery cell circuit board 1 also supports the upper discharge management protection board 2. The sufficiently large bearing area ensures that the battery will not deform during long-term use.

[0026] In this embodiment, the discharge management protection board 2 and the charging protection board 3 are designed separately. This design can reduce signal interference between the discharge management protection board 2 and the charging protection board 3, and further improve the overall stability and operational reliability of the battery system.

[0027] In this embodiment, the discharge management protection board 2 also has a battery balancing function, high and low temperature charging and discharging protection, and short circuit protection, making it convenient to use.

[0028] The thickness of the battery cell circuit board 1 is 2.0 mm, which further improves the structural strength of the battery cell circuit board 1.

[0029] The discharge management protection board 2 has several first slots 21, and the charging protection board 3 has several second slots 31.

[0030] One end of the battery cell circuit board 1 is provided with a plurality of first insert blocks 101 corresponding to the first slot 21, and the other end of the battery cell circuit board 1 is provided with a plurality of second insert blocks 102 corresponding to the second slot 31.

[0031] Both the first plug block 101 and the second plug block 102 have solder pads, and the solder pads on the first plug block 101 and the second plug block 102 correspond to the solder pads of the discharge management protection board 2 and the charging protection board 3, respectively.

[0032] In this embodiment, the battery cell circuit board 1 and the discharge management protection board 2 are connected by a row of 9 solder points, and the battery cell circuit board 1 and the charging protection board 3 are connected by a row of 3 solder points. The spacing between the left and right sides of each row of solder points is different, so that it cannot be inserted if it is inserted incorrectly, which is convenient for use.

[0033] The discharge management protection board 2 and the charging protection board 3 are provided with corresponding electronic components on the side away from the battery cell 4. The discharge management protection board 2 is provided with a first groove 10 on the side away from the first slot 21, and the charging protection board 3 is provided with a second groove 11 and a third groove 12 on the side away from the second slot 31.

[0034] The first groove 10 is used to place the temperature probe line, so that the temperature probe line can be bent from the position of the first groove 10 into the gap between the lower battery cells 4, avoiding damage to the line due to the temperature probe line protruding.

[0035] The second groove 11 is used to place the temperature control protection switch circuit, and the third groove 12 is used to place the temperature probe circuit. One end of the temperature control protection switch circuit and the temperature probe circuit are connected to the solder pad on the charging protection board 3, and the other end passes through the second groove 11 and the third groove 12 and is bent into the gap between the battery cells 4 for easy use.

[0036] In this embodiment, the temperature probe is used to detect the temperature of the battery cell 4 and transmit the temperature to the chip in the battery pack. When the temperature of the battery cell 4 is lower than the preset temperature, the chip in the battery pack will activate the heating element 5 to raise the temperature of the battery cell 4 to the corresponding temperature before charging.

[0037] In this embodiment, the temperature control switch is used to protect the battery cell 4 from overheating. When the battery cell 4 is heated to a predetermined temperature, the temperature control switch will automatically disconnect to prevent the battery from overheating, which is convenient for use.

[0038] The battery cell 4 has an insulating layer 6 on both sides near the discharge management protection board 2 and the charging protection board 3. The heating element 5 is located above the insulating layer 6 near the discharge management protection board 2. An insulating layer 6 is also provided between the heating element 5 and the discharge management protection board 2.

[0039] In this embodiment, the insulating layer 6 is made of coated barley paper, which is designed to meet the working requirements of the heating element 5 and is convenient to use.

[0040] The charging protection board 3 has a mounting surface 13 on its side, and each mounting surface 13 has two mounting holes 14.

[0041] In this embodiment, the mounting hole 14 is used to fix the entire battery pack on the fixed column inside the tracking bracket control box for easy use.

[0042] By designing the lithium battery structure, the structural strength of the battery pack can be improved. The design of the two rows of cells 4 optimizes the space utilization of the control box, significantly improves production and installation efficiency, and has environmental benefits. It also enables the monitoring and control of the battery pack temperature. In extremely cold weather, the heating element 5 ensures that the cells 4 are always charged at the optimal charging temperature, thereby ensuring the working efficiency of the battery pack in low-temperature environments. The battery pack provides power to the controller, thereby driving the bracket to rotate to complete the rotation of the photovoltaic bracket, which is convenient to use.

[0043] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A photovoltaic dedicated lithium battery characterized by: The application relates to a battery cell circuit board (1) which is inserted with a discharge management protection plate (2) and a charging protection plate (3) at two ends, a plurality of battery cells (4) are arranged on the battery cell circuit board (1), the plurality of battery cells (4) are arranged in two rows and top with the discharge management protection plate (2) and the charging protection plate (3), heating fins (5) are arranged on one side of the discharge management protection plate (2) close to the battery cells (4), a power output line (7) is further connected to one side of the discharge management protection plate (2), a signal line (8) and a charging line (9) are connected to one side of the charging protection plate (3), and a plurality of solder pads are arranged on the side of the discharge management protection plate (2) and the charging protection plate (3) away from the battery cells (4).

2. A lithium battery for photovoltaic applications according to claim 1, characterized in that: The thickness of the battery cell circuit board (1) is 2.0 mm.

3. A lithium battery for photovoltaic applications according to claim 2, characterized in that: A plurality of first insertion grooves (21) are formed in the discharge management protection plate (2), and a plurality of second insertion grooves (31) are formed in the charging protection plate (3).

4. A lithium battery for photovoltaic applications according to claim 3, characterized in that: A plurality of first insertion blocks (101) corresponding to the first insertion grooves (21) are arranged at one end of the battery cell circuit board (1), and a plurality of second insertion blocks (102) corresponding to the second insertion grooves (31) are arranged at the other end of the battery cell circuit board (1).

5. A lithium battery for photovoltaic applications according to claim 4, characterized in that: The first insertion blocks (101) and the second insertion blocks (102) are provided with solder pads, and the solder pads on the first insertion blocks (101) and the second insertion blocks (102) correspond to the solder pads of the discharge management protection plate (2) and the charging protection plate (3) respectively.

6. A photovoltaic dedicated lithium cell according to claim 5, characterized in that: Electronic components are arranged on the side of the discharge management protection plate (2) and the charging protection plate (3) away from the battery cells (4), a first recess (10) is arranged on the side of the discharge management protection plate (2) away from the first insertion grooves (21), and a second recess (11) and a third recess (12) are arranged on the side of the charging protection plate (3) away from the second insertion grooves (31).

7. A photovoltaic dedicated lithium battery according to claim 6, characterized in that: Insulating layers (6) are arranged on the two side surfaces of the battery cells (4) close to the discharge management protection plate (2) and the charging protection plate (3), the heating fins (5) are arranged above the insulating layer (6) close to the discharge management protection plate (2), and an insulating layer (6) is further arranged between the heating fins (5) and the discharge management protection plate (2).

8. A photovoltaic dedicated lithium battery according to claim 7, characterized in that: Mounting surfaces (13) are arranged on the side surfaces of the charging protection plate (3), and two mounting holes (14) are formed in each mounting surface (13).

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