Lithium iron phosphate battery with high stability

Abstract

The utility model relates to the technical field of lithium iron phosphate batteries, in particular to a high-stability lithium iron phosphate battery which comprises a shell, an upper cover is arranged at the top end of the shell, and a plurality of mounting clamping grooves are formed in the bottom wall of the shell. Compared with the prior art, the lithium battery has the advantages that the shell and the upper cover are arranged and are mutually enclosed to form the closed space, and the three supporting seats and the limiting clamping frame are arranged, so that the plurality of lithium battery monomers can be conveniently limited, and a safe distance is reserved between the plurality of lithium battery monomers and the inner wall of the shell; by arranging two fans and a plurality of air outlets in the top surface of the upper cover, external air is driven to enter the shell and flow out from the plurality of air outlets after passing through the plurality of lithium battery monomers through power-on operation of the two fans, so that heat in the shell is conveniently taken away, and the service life of the shell is prolonged. And the overall temperature rise is avoided, so that the problems in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium iron phosphate batteries, in particular to a lithium iron phosphate battery with high stability. Background Art

[0002] At present, lithium iron phosphate power batteries are becoming more and more widely used due to their advantages such as long life, high safety, fast charging speed and high temperature resistance. The high safety of lithium iron phosphate power batteries is mainly reflected in the following: general lithium cobalt oxide batteries and lithium manganese oxide batteries will explode under strong collisions, which will pose a threat to the life safety of consumers. However, lithium iron phosphate power batteries need to undergo rigorous safety tests and will not explode even in the worst traffic accidents, which effectively solves the safety hazard caused by explosions.

[0003] The traditional lithium iron phosphate battery cell structure is large and is directly arranged inside the shell. The internal space is relatively closed, and heat is easily accumulated inside the shell, causing the overall temperature to rise. At the same time, the shell used to place the battery lacks a protective structure, which makes it vulnerable to external impact. Based on this, a lithium iron phosphate battery with high stability is proposed to protect the lithium iron phosphate battery. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a lithium iron phosphate battery with high stability, which effectively solves the deficiencies of the prior art.

[0005] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a lithium iron phosphate battery with high stability, including a shell, a top cover is arranged on the top of which, the bottom wall of the shell is provided with a plurality of mounting slots, the plurality of mounting slots are arranged in three rows, the three groups of mounting slots are internally slidably connected with a support seat, the tops of the three support seats are provided with a plurality of lithium battery cells, the tops of the plurality of lithium battery cells are provided with a limit card frame, two ventilation slots are provided on one side of the shell, and fans are provided inside both, a plurality of air outlets are provided on the side of the top cover away from the top surface of the ventilation slots, a plurality of protective blocks are fixedly connected on both sides of the middle part of the bottom surface of the upper cover, which are respectively fitted with the top surfaces of the plurality of lithium battery cells, and a plurality of protruding blocks are provided at the edges of the bottom surface of the upper cover, which are respectively fitted with the top surfaces of the limit card frames.

[0006] Preferably, any of the above schemes is that a handle is fixedly connected to the middle part of the outer shell near both sides of the ventilation slot, and the inner walls of the two ventilation slots are provided with a filter net. The handle in this scheme is convenient for the user to lift the whole and transfer the position, and the two filter nets are convenient for filtering the interior of the outer shell to improve the cleanliness of the incoming air.

[0007] Preferably, any of the above schemes is that the top surfaces of the three support seats are fixedly connected with protective pads, and the top surfaces of the three protective pads are recessed downwards. The recessed positions of the three protective pads in this scheme are convenient for providing a placement position for the bottom end of the lithium battery cell and limiting the lithium battery cell. At the same time, through the cooperation of the limiting card frame and the upper cover, the lithium battery cell can be stably placed inside the outer shell.

[0008] Preferably, any of the above schemes is that the top surface of the upper cover is flush with the top surface of the outer shell, and the edge of the upper cover is fixedly connected to the top of the inner wall of the outer shell by laser welding. By using this scheme, it is convenient for the upper cover to close the top of the outer shell and avoid accidental detachment of the upper cover from the outer shell.

[0009] Preferably, any of the above schemes is that a mounting frame is fixedly connected to the middle part of the top surface of the upper cover, the bottom end of the mounting frame is connected to the interior of the outer shell, a circuit board is arranged inside the mounting frame, and a closing cover is arranged at the top of the interior of the mounting frame. The circuit board in this scheme is a protective circuit board, which is used to monitor the power, voltage and other parameters of multiple lithium battery cells, and is also used to output electrical energy to the outside through connecting wires.

[0010] Preferably, any of the above schemes is that the multiple protective blocks are arranged in two rows on the bottom surface of the upper cover, and the bottom surfaces of the two rows of protective blocks are respectively fitted with the middle parts of the top surfaces of the multiple lithium battery cells. The material of the multiple protective blocks in this scheme can be rubber, which has good energy absorption and buffering effect. After the upper cover is fixedly connected to the outer shell, the multiple protective blocks are respectively in contact with the multiple lithium battery cells, thereby providing certain protection for the multiple lithium battery cells.

[0011] The utility model has the following advantages:

[0012] 1. The lithium iron phosphate battery with high stability is provided with an outer shell and an upper cover, which are mutually enclosed and combined into a closed space. By providing three support seats and a limit card frame, it is convenient to limit the position of multiple lithium battery cells, so that a safe distance is left between the multiple lithium battery cells and the inner wall of the outer shell to avoid the impact of the outer wall directly acting on the lithium battery cells. By providing two fans and multiple air outlets on the top surface of the upper cover, the two fans are powered on to drive external air into the interior of the outer shell, and after passing through the multiple lithium battery cells, it flows out from the multiple air outlets, so as to take away the heat inside the outer shell and avoid the overall temperature from rising, thereby effectively solving the problems existing in the prior art.

[0013] 2. The highly stable lithium iron phosphate battery is provided with three support seats, and the top surfaces of the three support seats are provided with protective pads. At the same time, multiple protective blocks are fixedly connected to both sides of the middle part of the bottom surface of the upper cover, thereby facilitating effective protection of multiple lithium battery cells. When external impact occurs, it can effectively buffer and avoid damage to the lithium battery cells. The overall structure is simple, which is convenient for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0016] Figure 3 It is a schematic diagram of the internal cutaway structure of the housing of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the upper cover of the utility model from a first perspective;

[0018] Figure 5 This is a schematic diagram of the structure of the upper cover of the utility model from a second viewing angle;

[0019] Figure 6 This is a schematic diagram of the limit card frame structure of the utility model;

[0020] Figure 7 This is a schematic diagram of the support base structure of the utility model.

[0021] In the figure: 1-housing, 2-air outlet, 3-closing cover, 4-handle, 5-installation frame, 6-filter, 7-upper cover, 8-lithium battery cell, 9-fan, 10-installation slot, 11-support seat, 12-protective pad, 13-ventilation slot, 14-circuit board, 15-protective block, 16-raised block, 17-limiting card frame. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0023] like Figures 1 to 7As shown, a lithium iron phosphate battery with high stability includes a shell 1, a top of which is provided with an upper cover 7, a bottom wall of the shell 1 is provided with a plurality of mounting slots 10, the plurality of mounting slots 10 are arranged in three rows, a support seat 11 is slidably connected inside the three groups of mounting slots 10, a plurality of lithium battery cells 8 are provided at the top of the three support seats 11, a limit card frame 17 is provided at the top of the plurality of lithium battery cells 8, two ventilation slots 13 are provided on one side of the shell 1, and fans 9 are provided inside both, a plurality of air outlets 2 are provided on a side of the upper cover 7 away from the top surface of the ventilation slots 13, a plurality of protective blocks 15 are fixedly connected on both sides of the middle part of the bottom surface of the upper cover 7, which are respectively fitted with the top surfaces of the plurality of lithium battery cells 8, and a plurality of protruding blocks 16 are provided at the edge of the bottom surface of the upper cover 7, which are respectively fitted with the top surfaces of the limit card frame 17.

[0024] A handle 4 is fixedly connected to the middle part of the outer shell 1 near the two sides of the ventilation groove 13, and the inner walls of the two ventilation grooves 13 are provided with a filter screen 6. As an optional technical solution of the utility model, the handle 4 is convenient for the user to lift the whole and transfer the position, and the two filter screens 6 are convenient for filtering the interior of the outer shell 1 to improve the cleanliness of the incoming air.

[0025] The top surfaces of the three support seats 11 are fixedly connected with protective pads 12, and the top surfaces of the three protective pads 12 are recessed downward. As an optional technical solution of the utility model, the recessed positions of the three protective pads 12 are convenient for providing a placement position for the bottom end of the lithium battery cell 8 and limiting the lithium battery cell 8. At the same time, through the cooperation of the limiting card frame 17 and the upper cover 7, the lithium battery cell 8 can be stably placed inside the outer shell 1.

[0026] The top surface of the upper cover 7 is flush with the top surface of the outer shell 1, and the edge of the upper cover 7 is fixedly connected to the top of the inner wall of the outer shell by laser welding. As an optional technical solution of the utility model, this makes it easy for the upper cover 7 to close the top of the outer shell 1 and prevent the upper cover 7 from accidentally detaching from the outer shell 1.

[0027] A mounting frame 5 is fixedly connected to the middle of the top surface of the upper cover 7, the bottom end of the mounting frame 5 is connected to the interior of the outer shell 1, a circuit board 14 is arranged inside the mounting frame 5, and a closing cover 3 is arranged at the top of the interior of the mounting frame 5. As an optional technical solution of the utility model, the circuit board 14 is a protective circuit board, which is used to monitor the power, voltage and other parameters of multiple lithium battery cells 8, and is also used to output electrical energy to the outside through connecting lines.

[0028] Multiple protective blocks 15 are arranged in two rows on the bottom surface of the upper cover 7, and the bottom surfaces of the two rows of protective blocks 15 are respectively fitted with the middle parts of the top surfaces of the multiple lithium battery cells 8. As an optional technical solution of the utility model, the material of the multiple protective blocks 15 can be rubber, which has good energy absorption and buffering effect. After being fixedly connected to the outer shell 1 through the upper cover 7, the multiple protective blocks 15 are respectively in contact with the multiple lithium battery cells 8, thereby providing certain protection for the multiple lithium battery cells 8.

[0029] The following steps are required when using the highly stable lithium iron phosphate battery:

[0030] 1) When in use, the fan 9 is powered on to allow external air to enter the interior of the housing 1;

[0031] 2) The flowing air passes between the multiple lithium battery cells 8, taking away the heat generated during their operation;

[0032] 3) Air flows out from multiple air outlets 2;

[0033] 4) When an external impact occurs, a safe distance is left between the multiple lithium battery cells 8 and the inner wall of the housing 1 to prevent the impact from directly acting on the lithium battery cells 8;

[0034] 5) The protection pad 12 and the plurality of protection blocks 15 provide buffering for the lithium battery cell 8 , thereby reducing the impact on the lithium battery cell 8 .

[0035] In summary, when the user uses it, by setting the outer shell 1 and the upper cover 7, the two are mutually enclosed and combined into a closed space, and by setting three support seats 11 and a limit card frame 17, it is convenient to limit the multiple lithium battery cells 8, so that a safe distance is left between the multiple lithium battery cells 8 and the inner wall of the outer shell 1 to avoid the impact of the outer wall directly acting on the lithium battery cells 8. By setting two fans 9 and the multiple air outlets 2 on the top surface of the upper cover 7, the two fans 9 are powered on to drive the external air into the interior of the outer shell 1 and pass through the multiple lithium battery cells. The single cells 8 flow out from multiple air outlets 2, so as to take away the heat inside the shell 1 and avoid the overall temperature increase, thereby effectively solving the problems existing in the prior art, and then by setting three support seats 11, and the top surfaces of the three support seats 11 are provided with protective pads 12, and at the same time, both sides of the middle part of the bottom surface of the upper cover 7 are fixedly connected with multiple protective blocks 15, so as to facilitate the effective protection of multiple lithium battery single cells 8, when external impact occurs, effective buffering is performed to avoid damage to the lithium battery single cells 8, and the overall structure is simple, which is convenient for promotion and use.

[0036] Although 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. A lithium iron phosphate battery with high stability, characterized in that: The invention comprises a shell (1), the top of which is provided with an upper cover (7), the bottom wall of the shell (1) is provided with a plurality of mounting slots (10), the plurality of mounting slots (10) are arranged in three rows, the interiors of the three groups of mounting slots (10) are slidably connected with support seats (11), the tops of the three support seats (11) are provided with a plurality of lithium battery cells (8), the tops of the plurality of lithium battery cells (8) are provided with a limit card frame (17), one side of the shell (1) is provided with two ventilation slots (13), and both are provided with fans (9), a side of the upper cover (7) away from the top surface of the ventilation slot (13) is provided with a plurality of air outlets (2), both sides of the middle part of the bottom surface of the upper cover (7) are fixedly connected with a plurality of protective blocks (15), which are respectively fitted with the top surfaces of the plurality of lithium battery cells (8), and the edges of the bottom surface of the upper cover (7) are provided with a plurality of protruding blocks (16), which are respectively fitted with the top surfaces of the limit card frame (17).

2. A lithium iron phosphate battery with high stability according to claim 1, characterized in that: A handle (4) is fixedly connected to the middle of the housing (1) near both sides of the ventilation slot (13), and a filter screen (6) is provided on the inner walls of the two ventilation slots (13).

3. A lithium iron phosphate battery with high stability according to claim 2, characterized in that: The top surfaces of the three support seats (11) are all fixedly connected with protection pads (12), and the top surfaces of the three protection pads (12) are all concave downwards.

4. A lithium iron phosphate battery with high stability according to claim 3, characterized in that: The top surface of the upper cover (7) is flush with the top surface of the outer shell (1), and the edge of the upper cover (7) is fixedly connected to the top of the inner wall of the outer shell by laser welding.

5. A lithium iron phosphate battery with high stability according to claim 4, characterized in that: A mounting frame (5) is fixedly connected to the middle of the top surface of the upper cover (7); the bottom end of the mounting frame (5) is connected to the interior of the housing (1); a circuit board (14) is arranged inside the mounting frame (5); and a closing cover (3) is arranged at the top end of the interior of the mounting frame (5).

6. A lithium iron phosphate battery with high stability according to claim 5, characterized in that: The plurality of protection blocks (15) are arranged in two rows on the bottom surface of the upper cover (7), and the bottom surfaces of the two rows of protection blocks (15) are respectively fitted with the middle parts of the top surfaces of the plurality of lithium battery cells (8).

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