Lithium battery pack

Abstract

The lithium battery pack comprises a connecting assembly and a fixing assembly, the connecting assembly comprises a plurality of second connecting blocks, a third connecting block and a fixing rod, grooves are formed in the four side surfaces of the third connecting block, the two sides of the structures of the grooves have slopes inwards, a fixing groove is formed above the grooves of the third connecting block, and the fixing rod is connected with the second connecting blocks. The front end of the second connecting block is provided with a trapezoid protruding structure which is matched with the groove of the third connecting block. According to the utility model, when the third connecting block moves, the second connecting block moves under the action of the spring, so that the second connecting block is connected with the first connecting block, the battery cell is fixed, the heat of the battery pack can be dissipated by additionally arranging the semiconductor radiator, and the battery pack is prevented from being damaged or exploded due to heat accumulation in the battery pack caused by overuse of the battery cell; and the connecting assembly can be fixed through the rebounding device, so that the battery cell is prevented from moving up and down, and the battery cell can be prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery pack. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. In 1912, lithium metal batteries were first proposed and studied by Gilbert N. Lewis. In the 1970s, MS Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream. Currently, most lithium batteries are stored side by side, which is not convenient for taking and storing. If multiple lithium batteries are stacked, they may heat up due to excessive use. The heat released by multiple lithium batteries together may cause lithium battery fires and other accidents. In this regard, a lithium battery pack is proposed to optimize the fixing method.

[0003] After searching, the Chinese patent application number 202320261258.1 discloses a lithium battery pack, including a battery pack frame, a limiting mechanism and multiple battery frames; the battery pack frame includes a chassis, a top cover and support shafts of the same number as the battery frames, the support shafts are connected between the chassis and the top cover; the battery frame is rotatably connected to the support shaft, and a winding spring is sleeved on the support shaft, one end of the winding spring is fixedly connected to the support shaft, and the other end is fixedly connected to the battery frame; a frame buckle is arranged on the outer wall of the battery frame; the limiting mechanism is arranged between the chassis and the top cover, and the support shaft is arranged on the periphery of the limiting mechanism; the limiting mechanism includes multiple column buckles distributed along the circumferential direction; under the elastic force of the winding spring, the battery frame can be rotated until the frame buckle and the column buckle are engaged. The battery pack in the above-mentioned document has the following shortcomings: by taking out the battery at one time, the battery may be damaged due to excessive force. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a lithium battery pack.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lithium battery pack includes a connecting component and a fixing component. The connecting component includes a second connecting block, a third connecting block, and a fixing rod. The four side surfaces of the third connecting block are all provided with grooves. The groove structure has inward slopes on both sides. A fixing groove is provided above the groove of the third connecting block. There are several second connecting blocks. The front end of the second connecting block is provided with a trapezoidal protrusion structure that is compatible with the groove of the third connecting block. The fixing rod is installed on one side of the second connecting block, and the size of the fixing rod is compatible with the size of the fixing groove of the third connecting block.

[0007] As a further solution of the utility model: the connecting assembly also includes a spring and a bracket one, the bracket one is provided with a plurality of circular holes, the bracket one is an annular structure, the circular holes are arranged on the side of the bracket one, the fixing rod passes through the circular holes on the bracket one, there are a plurality of springs installed on the fixing rod, one end of the spring is connected to the connecting block two, and the other end is connected to the bracket one.

[0008] As a further solution of the utility model: the connection assembly also includes a connection block 1, the battery pack also includes a battery cell, the connection block 1 is an L-shaped structure, the connection block 1 is installed on the surface of the battery cell, and there are several battery cells.

[0009] As a further solution of the utility model: the battery pack also includes a shell 2, a shell 1, and a semiconductor heat sink. A groove is provided on the curved surface of the shell 2. There are several semiconductor heat sinks installed on the curved surface of the shell 2. The shell 1 is connected to the shell 2 by a buckle, and a handle is provided on the upper surface of the shell 1.

[0010] As a further solution of the utility model: the fixing assembly includes a connecting rod 1 and a connecting rod 2, the connecting rod 2 is installed between the connecting blocks 3, and the connecting rod 1 is installed between the connecting blocks 3 of the upper layer.

[0011] As a further solution of the utility model: the fixing assembly also includes a slide rail and a slider, a number of the slide rails are installed on the inner side of the bottom of the outer shell 2, a mounting groove is provided on the slide rail, a number of the sliders are installed on the bottom of the battery cell, and the structure of the slider is compatible with the structure of the slide rail groove.

[0012] As a further solution of the utility model: the fixing assembly also includes a rebounder, the battery pack also includes a shell two, the rebounder includes a spring, an iron hook, a magnetic head, a rubber head, and plastic cover parts, the upper part of the rebounder is installed on the bottom surface of the bottom connecting block three, and the other part of the rebounder is installed on the bottom inner side of the shell two.

[0013] As a further solution of the utility model: the battery pack also includes a battery management controller, an insulating plate, and a charge and discharge connector. The insulating plate is provided with a hole and is installed on the upper surface of the battery cell. A connecting rod passes through the hole on the insulating plate. The battery management controller is composed of a control system and a power distribution device. The charge and discharge connector is provided with a charging connector, a discharging connector and a power display panel. The charge and discharge connector is installed on one side of the outer shell and is linearly connected to the battery management controller.

[0014] The beneficial effects of the utility model are:

[0015] When the connection block three moves, the connection block two moves under the action of the spring, thereby connecting with the connection block one, thereby fixing the battery cell.

[0016] By adding a semiconductor heat sink, the battery pack can be cooled to prevent excessive use of the battery cells from causing heat accumulation in the battery pack, which may cause battery damage or explosion.

[0017] The slide rails and sliders can be used to facilitate the installation and removal of the battery cells. By pressing the connecting rod, the connecting components can be moved, which makes it easy to replace the battery cells, which is convenient and quick.

[0018] The rebounder can be used to fix the connection components to prevent the battery cells from moving up and down, thereby preventing the battery cells from being damaged.

[0019] The battery can be charged and discharged through the charge and discharge connector and the battery management controller, and the power usage of the battery pack can also be understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the connection component of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the cross section of the connection component of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the fixing component of the utility model.

[0026] In the figure: 1-housing 1, 2-housing 2, 3-semiconductor heat sink, 4-battery management controller, 5-insulating plate, 6-battery cell, 7-slide rail, 8-bracket 1, 9-connecting rod 1, 10-rebounder, 11-connecting block 1, 12-connecting block 2, 13-spring, 14-connecting block 3, 15-fixing rod, 16-charging and discharging connector, 17-connecting rod 2, 18-slider. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] A lithium battery pack, such as Figure 4 , Figure 5 As shown, it includes a connecting component and a fixing component. The connecting component includes a connecting block 2 12, a connecting block 3 14, and a fixing rod 15. The four side surfaces of the connecting block 3 14 are all provided with grooves. The groove structure has slopes on both sides inward. A fixing groove is provided above the groove of the connecting block 3 14. There are several connecting blocks 2 12. The front end of the connecting block 2 12 is provided with a trapezoidal protrusion structure, which is adapted to the groove of the connecting block 3 14. The fixing rod 15 is installed on one side of the connecting block 2 12, and the size of the fixing rod 15 is adapted to the size of the fixing groove of the connecting block 3 14.

[0030] like Figure 5 As shown, the connecting assembly also includes a spring 13 and a bracket 8. The bracket 8 is provided with a plurality of circular holes. The bracket 8 is an annular structure. The circular holes are provided on the side of the bracket 8. The fixing rod 15 passes through the circular holes on the bracket 8. There are a plurality of springs 13 installed on the fixing rod 15. One end of the spring 13 is connected to the connecting block 2 12, and the other end is connected to the bracket 8.

[0031] like Figure 5 As shown, the connection assembly further includes a connection block 11, and the battery pack further includes a battery cell 6. The connection block 11 is an L-shaped structure, and the connection block 11 is installed on the surface of the battery cell 6. There are several battery cells 6.

[0032] When the connection block three 14 moves, the connection block two 12 moves under the action of the spring, thereby connecting with the connection block one 11, thereby fixing the battery core 6.

[0033] like Figure 1 As shown, the battery pack also includes a shell 2, a shell 1, and a semiconductor heat sink 3. A groove is provided on the curved surface of the shell 2. There are several semiconductor heat sinks 3 installed on the curved surface of the shell 2. The shell 1 is connected to the shell 2 by a buckle, and a handle is provided on the upper surface of the shell 1.

[0034] By adding the semiconductor heat sink 3, the heat of the battery pack can be dissipated, thereby preventing the excessive use of the battery cells 6 from causing heat accumulation in the battery pack, resulting in battery damage or battery explosion.

[0035] like Figure 3 As shown, the fixing assembly includes a connecting rod 1 9 and a connecting rod 2 17. The connecting rod 2 17 is installed between the connecting blocks 3 14, and the connecting rod 1 9 is installed between the connecting blocks 3 14 of the upper layer.

[0036] like Figure 6As shown, the fixing assembly also includes a slide rail 7 and a slider 18. Several of the slide rails 7 are installed on the inner side of the bottom of the housing 2. The slide rail 7 is provided with a mounting groove. Several of the sliders 18 are installed on the bottom of the battery cell 6. The structure of the slider 18 is compatible with the structure of the slide rail 7 groove.

[0037] The slide rail 7 and the slider 18 can be used to facilitate the installation and removal of the battery cell. By pressing the connecting rod 9, the connecting assembly can be moved, which makes it easy to replace the battery cell, which is convenient and quick.

[0038] like Figure 6 As shown, the fixing assembly also includes a rebounder 10, and the battery pack also includes an outer shell 2. The rebounder includes a spring 13, an iron hook, a magnetic head, a rubber head, a plastic sleeve and other parts. The upper part of the rebounder 10 is installed on the bottom surface of the bottom connecting block 3 14, and the other part of the rebounder 10 is installed on the bottom inner side of the outer shell 2.

[0039] The rebounder 10 can be used to fix the connection assembly, prevent the battery cell 6 from moving up and down, and prevent the battery cell 6 from being damaged.

[0040] like Figure 1 , Figure 2 As shown, the battery pack also includes a battery management controller 4, an insulating plate 5, and a charge and discharge connector 16. The insulating plate 5 is provided with a hole and is installed on the upper surface of the battery cell 6. The connecting rod 9 passes through the hole on the insulating plate 5. The battery management controller 4 is composed of a control system, a power distribution device, etc. The charge and discharge connector 16 is provided with a charging connector, a discharging connector and a power display panel. The charge and discharge connector 16 is installed on one side of the outer shell 2 and is linearly connected to the battery management controller.

[0041] The battery can be charged and discharged through the charge and discharge connector 16 and the battery management controller 4, and the power usage of the battery pack can also be understood.

[0042] Working principle: The operator carries the lithium battery pack to the required place, charges the equipment or the power bank through the charge and discharge connector, opens the outer shell 1, removes the insulating plate 5, presses the connecting rod 1 9, moves the connecting block 3 14 and the connecting rod 2 17 downward, and the connecting block 2 12 and the connecting block 3 14 are offset, so that the connecting block 2 12 is separated from the connecting block 1 11, and the connecting block 3 14 at the bottom of the battery pack is fixed by the rebounder 10, and the moving battery cell 6 is taken out by the slider 18, and the new battery cell 6 is installed on the slide rail 7, and the connecting block 1 11 on the battery cell 6 is connected to the connecting block 2 12, and the connecting rod 1 9 is pressed again, and the rebounder 10 rebounds the connecting rod 2 17, so that the connecting block 11 and the connecting block 2 12 are fixed again, the insulating plate 5 and the battery management controller 4 are installed, and the outer shell 1 is closed.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lithium battery pack, characterized in that: The invention comprises a connecting component and a fixing component, wherein the connecting component comprises a second connecting block (12), a third connecting block (14), and a fixing rod (15), wherein the four side surfaces of the third connecting block (14) are all provided with grooves, and the groove structure has inward slopes on both sides, and a fixing groove is provided above the groove of the third connecting block (14), wherein the second connecting block (12) has a plurality of grooves, and the front end of the second connecting block (12) is provided with a trapezoidal protrusion structure, which is matched with the groove of the third connecting block (14), and the fixing rod (15) is installed on one side of the second connecting block (12), and the size of the fixing rod (15) is matched with the size of the fixing groove of the third connecting block (14).

2. A lithium battery pack according to claim 1, characterized in that: The connecting assembly further comprises a spring (13) and a bracket one (8). The bracket one (8) is provided with a plurality of circular holes. The bracket one (8) is an annular structure. The circular holes are provided on the side of the bracket one (8). The fixing rod (15) passes through the circular holes on the bracket one (8). There are a plurality of springs (13) which are mounted on the fixing rod (15). One end of the spring (13) is connected to the connecting block two (12), and the other end is connected to the bracket one (8).

3. A lithium battery pack according to claim 2, characterized in that: The connection assembly further comprises a connection block 1 (11), and the battery pack further comprises a battery cell (6). The connection block 1 (11) is an L-shaped structure, and the connection block 1 (11) is mounted on the surface of the battery cell (6). There are a plurality of battery cells (6).

4. A lithium battery pack according to claim 3, characterized in that: The battery pack further comprises a second shell (2), a first shell (1), and a semiconductor heat sink (3); a groove is provided on the arc surface of the second shell (2); a plurality of semiconductor heat sinks (3) are mounted on the arc surface of the second shell (2); the first shell (1) is connected to the second shell (2) via a buckle; and a handle is provided on the upper surface of the first shell (1).

5. A lithium battery pack according to claim 4, characterized in that: The fixing assembly comprises a connecting rod 1 (9) and a connecting rod 2 (17). The connecting rod 2 (17) is installed between connecting blocks 3 (14), and the connecting rod 1 (9) is installed between connecting blocks 3 (14) of the upper layer.

6. A lithium battery pack according to claim 5, characterized in that: The fixing assembly further comprises a slide rail (7) and a slider (18); a plurality of the slide rails (7) are mounted on the inner side of the bottom of the second housing (2); a mounting groove is provided on the slide rail (7); a plurality of the sliders (18) are mounted on the bottom of the battery cell (6); and the structure of the slider (18) is compatible with the structure of the groove of the slide rail (7).

7. A lithium battery pack according to claim 6, characterized in that: The fixing assembly also includes a rebounder (10), and the battery pack also includes a second shell (2). The rebounder includes a spring (13), an iron hook, a magnetic head, a rubber head, and a plastic cover component. The upper part of the rebounder (10) is installed on the bottom surface of the bottom connecting block three (14), and the other part of the rebounder (10) is installed on the inner side of the bottom of the second shell (2).

8. A lithium battery pack according to claim 7, characterized in that: The battery pack further comprises a battery management controller (4), an insulating plate (5), and a charge and discharge connector (16); the insulating plate (5) is provided with a hole and is mounted on the upper surface of the battery cell (6); a connecting rod (9) passes through the hole on the insulating plate (5); the battery management controller (4) is composed of a control system and a power distribution device; the charge and discharge connector (16) is provided with a charging connector, a discharging connector, and a power display panel; the charge and discharge connector (16) is mounted on one side of the second housing (2) and is linearly connected to the battery management controller.

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