Arc-shaped rechargeable battery pack structure for coal mine

Abstract

The utility model relates to an arc-shaped rechargeable battery pack structure for a coal mine, and belongs to the technical field of batteries for the coal mine. The battery pack comprises a battery unit with a waist-shaped cross section, a protection plate and a control circuit board, the battery unit is composed of a plurality of battery packs which are connected in series, each battery pack comprises an arc-shaped shell and batteries, a plurality of battery holes which are uniformly distributed along the circumference are formed in the arc-shaped shell, and the batteries are arranged in the battery holes. The battery units are connected through wires in the arc channels, and the batteries are connected with the control circuit board through wires. Through the arc-shaped structural design, the capacity and the cruising ability of the battery pack are improved, the intrinsic safety type circuit design is adopted, the underground explosion-proof requirement of a coal mine is met, the structure is compact, and the assembly and the maintenance are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries for coal mines and relates to an arc-shaped rechargeable battery pack structure for coal mines. Background Art

[0002] Battery packs are the core components of underground coal mine MWD instruments, primarily used to power these instruments and measure borehole trajectory parameters, geological parameters, and drilling engineering parameters. Existing MWD instruments in coal mines are located 5 to 8 meters from the drill bit, resulting in a lag in borehole trajectory measurement data and control, severely impacting the automation and intelligentization of directional drilling operations. To further enhance the automation and intelligentization of directional drilling equipment, near-bit MWD is required to further reduce the size of the MWD instruments. The structural design and size optimization of the battery pack are key. Utility Model Content

[0003] In view of this, the purpose of the present invention is to solve the problems of existing underground coal mine measurement while drilling instruments being too large and having short battery life, and to provide an arc-shaped rechargeable battery pack structure for coal mines.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0005] A curved rechargeable battery pack structure for mining, comprising battery cells, each with a waist-shaped cross-section, a protective plate, and a control circuit board; the protective plates are fixedly mounted at both ends of the battery cells, and the control circuit board is fixedly mounted on the outside of one of the protective plates;

[0006] The battery unit is composed of a plurality of battery packs connected in series, the battery pack comprising an arc-shaped shell and batteries; the arc-shaped shell comprises a coaxially arranged outer arc surface and inner arc surface, the ends of the outer arc surface and the inner arc surface being connected by an arc to form a waist-shaped structure; a plurality of battery holes evenly distributed around the circumference are provided between the outer arc surface and the inner arc surface; the battery holes pass through both ends of the shell; the batteries are arranged in the battery holes; the batteries in each battery pack are connected in parallel and then in series with the batteries in the adjacent battery pack;

[0007] Arc channels are provided on both the outer arc surface and the inner arc surface. The arc channels are parallel to the battery holes and pass through both ends of the arc shell. Wires are provided in the arc channels, and batteries and batteries and the control circuit board are connected through the wires.

[0008] Furthermore, a recessed groove is provided at the end of the battery hole, and the wire passes through the recessed groove from the battery hole and enters the arc channel.

[0009] Furthermore, each arc channel is provided between two adjacent battery holes.

[0010] Furthermore, a connecting hole is provided on the arc-shaped shell, and a connecting rod is provided in the connecting hole, which penetrates the entire battery unit and connects the battery unit, the protection plate and the control circuit board into one.

[0011] Furthermore, there are multiple connecting holes, each of which is located between two adjacent battery holes.

[0012] Furthermore, the battery is a rechargeable battery.

[0013] Furthermore, the control circuit board is provided with a charging management circuit, a battery pack overvoltage and overcurrent circuit, and an undervoltage protection circuit, all of which are intrinsically safe circuits; the control circuit board is provided with a charging interface, a discharging interface and a communication interface.

[0014] The beneficial effects of the present invention are:

[0015] 1. This utility model adopts an arc-shaped structure with concentric outer and inner arc surfaces, which facilitates installation in the drill pipe. The battery pack is compact and can accommodate more batteries within a limited space, thus improving battery life. This is particularly important for the long-term operation of MWD instruments in coal mines.

[0016] 2. The utility model adopts parallel connection of multiple batteries as a group, and adopts the design of charging management circuit, battery pack overvoltage and overcurrent circuit, undervoltage protection circuit, etc., and adopts intrinsically safe circuit design to meet the special explosion-proof requirements of coal mines.

[0017] 3. This utility model integrates the battery cells, protective plate, and control circuit board into a single unit via connecting rods, resulting in a compact structure and easy assembly. Furthermore, the design of the battery port simplifies battery insertion and replacement, facilitating maintenance and repair. The battery cells are connected via wires within the arc-shaped channels, ensuring a secure connection between the battery and the control circuit board, reducing the risk of poor contact due to vibration or other external forces.

[0018] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0020] Figure 1 This is an overall schematic diagram of the structure of the arc-shaped rechargeable battery pack for coal mines in the utility model.

[0021] Figure 2 It is a structural schematic diagram of the arc-shaped shell in the utility model.

[0022] Figure 3 The figure is a circuit connection diagram of the utility model arc-shaped rechargeable battery pack for coal mines.

[0023] Figure numerals: 1-connecting rod; 2-protective plate; 3-battery pack housing; 4-protective plate; 5-control circuit board; 6-rechargeable lithium battery; 301-outer arc channel; 302-inner arc channel; 303-sink; 304-connecting hole; 501-wire; 502-wire; 503-wire; 504-wire. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0025] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Please refer to Figures 1 to 3, which is a curved rechargeable battery pack structure for mining, including a battery cell with a waist-shaped cross-section, a protection plate 2, a protection plate 4 and a control circuit board 5; the protection plate 2 and the protection plate 4 are respectively fixedly arranged at both ends of the battery cell, and the control circuit board 5 is fixedly arranged on the outside of the protection plate 4;

[0028] The battery unit is composed of 4 battery groups connected in series, and the battery group includes an arc-shaped shell and a battery 6; the arc-shaped shell includes a coaxially arranged outer arc surface and an inner arc surface, and the ends of the outer arc surface and the inner arc surface are connected by a circular arc to form a waist-shaped structure; 4 battery holes evenly distributed on the circumference are provided between the outer arc surface and the inner arc surface, and the number of battery holes can be changed according to the size of the angle between the two ends of the arc surface; the battery hole passes through both ends of the shell; the battery 6 is arranged in the battery hole; the battery 6 is connected in parallel in groups of 4 and then in series, and the nodes of the two battery groups are connected to the control circuit board 5 through wires 501, wire 502, wire 503, and wire 504 respectively; the number of batteries 6 connected in parallel can be adjusted according to the actual space.

[0029] The outer and inner arc surfaces are respectively provided with an outer arc channel 301 and an inner arc channel 302. Both the outer arc channel 301 and the inner arc channel 302 are parallel to the battery holes and extend through both ends of the arc-shaped housing. Each outer arc channel 301 and the inner arc channel 302 are located between two adjacent battery holes. Wires are provided within the outer arc channels 301 and the inner arc channels 302, connecting the batteries and the battery 6 to the control circuit board 5 via wires. A recessed groove 303 is provided at the end of the battery hole, through which the wires pass from the battery hole into the outer arc channel 301 and the inner arc channel 302.

[0030] A connecting hole 304 is further provided on the arc-shaped shell. A connecting rod 1 is provided in the connecting hole 304 and penetrates the entire battery unit and connects the battery unit, the protection plate and the control circuit board 5 into one. The connecting rod 1 plays a role of fixed connection.

[0031] There are three connecting holes 304, each of which is located between two adjacent battery holes. A connecting rod 1 is installed in each connecting hole 304.

[0032] The battery 6 is a rechargeable lithium battery. The control circuit board 5 is provided with a charging management circuit, a battery pack overvoltage and overcurrent circuit, an undervoltage protection circuit, etc., which are used to monitor the voltage and play a role in circuit protection. They are all intrinsically safe circuits to meet the special explosion-proof requirements of coal mines underground; the control circuit board 5 is provided with a charging interface, a discharge interface and a communication interface, etc., which can charge the battery 6.

[0033] The assembly process of the curved rechargeable battery pack for coal mines in this embodiment includes the following steps:

[0034] S1, prepare battery cells, protection board, control circuit board 5, wires and connecting rod 1;

[0035] S2. Insert the battery 6 into the battery hole of the battery unit so that the battery 6 fits tightly in the battery hole;

[0036] S3, connecting the batteries 6 in each battery unit in parallel, and connecting the batteries 6 in adjacent battery units in series;

[0037] S4. Pass the wire through the sink 303 of the battery hole and enter the outer arc channel 301 or the inner arc channel 302. Arrange the wire in the outer arc channel 301 and the inner arc channel 302 to ensure that the wire is firmly connected to the battery 6 and the control circuit board 5.

[0038] S5. Fix the protection plate 2 and the protection plate 4 at both ends of the battery cell to ensure that the protection plates fit tightly against the battery cell.

[0039] S6. Fix the control circuit board 5 on the outside of one of the protection plates and connect the charging interface, the discharging interface and the communication interface;

[0040] S7. Insert the connecting rod 1 into the connecting hole 304 on the arc-shaped housing, ensuring that the connecting rod 1 passes through the entire battery cell and connects the battery cell, protection board and control circuit board 5 into one;

[0041] S8. Check the entire battery pack structure to ensure that all components are correctly installed, all connections are secure, and perform electrical testing.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A curved rechargeable battery pack structure for coal mines, characterized by: The battery cell comprises a battery unit, a protection plate and a control circuit board, all of which have a waist-shaped cross section; the protection plates are fixedly arranged at both ends of the battery cell, and the control circuit board is fixedly arranged on the outside of one of the protection plates; The battery unit is composed of a plurality of battery packs connected in series, the battery pack comprising an arc-shaped shell and batteries; the arc-shaped shell comprises a coaxially arranged outer arc surface and inner arc surface, the ends of the outer arc surface and the inner arc surface being connected by an arc to form a waist-shaped structure; a plurality of battery holes evenly distributed around the circumference are provided between the outer arc surface and the inner arc surface; the battery holes pass through both ends of the shell; the batteries are arranged in the battery holes; the batteries in each battery pack are connected in parallel and then in series with the batteries in the adjacent battery pack; Arc channels are provided on both the outer arc surface and the inner arc surface. The arc channels are parallel to the battery holes and pass through both ends of the arc shell. Wires are provided in the arc channels, and batteries and batteries and the control circuit board are connected through the wires.

2. The arc-shaped rechargeable battery pack structure for coal mines according to claim 1, characterized in that: A sink groove is provided at the end of the battery hole, and the wire passes through the sink groove from the battery hole and enters the arc channel.

3. The arc-shaped rechargeable battery pack structure for coal mines according to claim 2, characterized in that: Each arc channel is arranged between two adjacent battery holes.

4. The arc-shaped rechargeable battery pack structure for coal mines according to claim 2, characterized in that: The arc-shaped shell is further provided with a connecting hole, in which a connecting rod is provided that penetrates the entire battery unit and connects the battery unit, the protection plate and the control circuit board into one.

5. The arc-shaped rechargeable battery pack structure for coal mines according to claim 4, characterized in that: There are multiple connecting holes, each of which is located between two adjacent battery holes.

6. The arc-shaped rechargeable battery pack structure for coal mines according to claim 1, characterized in that: The battery is a rechargeable battery.

7. The arc-shaped rechargeable battery pack structure for coal mines according to claim 1, characterized in that: The control circuit board is provided with a charging management circuit, a battery pack overvoltage and overcurrent circuit, and an undervoltage protection circuit, all of which are intrinsically safe circuits; the control circuit board is provided with a charging interface, a discharging interface, and a communication interface.

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