Arc-shaped rechargeable battery pack structure for coal mine and assembly method thereof

Abstract

The invention relates to an arc-shaped rechargeable battery pack structure for a coal mine and an assembling method thereof, 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. The assembly method comprises the following steps: inserting the battery into the battery hole, connecting the lead, fixing the protection plate and the control circuit board, inserting the connecting rod, and performing electrical test. 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 assembly and maintenance are convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of batteries for coal mines, and relates to an arc-shaped rechargeable battery pack structure for coal mines and an assembling method thereof. Background Art

[0002] The battery pack is the core component of the MWD instrument in coal mines. It is mainly used to power the MWD instrument in coal mines and measure the borehole trajectory parameters, geological parameters, drilling engineering parameters, etc. As the existing MWD instruments in coal mines are 5 to 8 meters away from the drill bit, the borehole trajectory measurement data and control lag, which seriously affects the automation and intelligence of the directional drilling construction process of the directional drilling rig. To further improve the automation and intelligence level of directional drilling equipment, it is necessary to realize near-drill bit MWD to further reduce the size of the MWD instrument. The structural design and size optimization of the battery pack are the key. Summary of the invention

[0003] In view of this, the purpose of the present invention is to solve the problems of large size and short battery life of existing downhole measurement while drilling instruments in coal mines, and to provide an arc-shaped rechargeable battery pack structure for coal mines and an assembly method thereof.

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

[0005] A mine-used arc-shaped rechargeable battery pack structure comprises a battery unit, a protection plate and a control circuit board, all of which have waist-shaped cross sections; the protection plates are fixedly arranged at both ends of the battery unit, and the control circuit board is fixedly arranged on the outside of one of the protection plates;

[0006] The battery unit is composed of a plurality of battery groups connected in series, and the battery group includes an arc-shaped shell and a battery; the arc-shaped shell includes an outer arc surface and an inner arc surface arranged coaxially, and the two ends of the outer arc surface and the inner arc surface are 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 the two ends of the shell; the battery is arranged in the battery holes; the batteries in each battery group are connected in parallel and then connected in series with the batteries in the adjacent battery group;

[0007] The outer arc surface and the inner arc surface are both provided with arc channels, 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 are connected to each other and batteries to the control circuit board 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 arranged 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 board 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, and all of them are intrinsically safe circuits; the control circuit board is provided with a charging interface, a discharging interface and a communication interface.

[0014] A method for assembling the arc-shaped rechargeable battery pack for coal mines as described above comprises the following steps:

[0015] S1. Prepare battery cells, protection boards, control circuit boards, wires and connecting rods;

[0016] S2. Insert the battery into the battery hole of the battery unit so that the battery fits tightly into the battery hole;

[0017] S3, connecting the batteries in each battery unit in parallel, and connecting the batteries in adjacent battery units in series;

[0018] S4. Pass the wire through the sink of the battery hole and enter the arc channel, and arrange the wire in the arc channel to ensure that the wire is firmly connected to the battery and the control circuit board;

[0019] S5. Fix the protection plate at both ends of the battery unit to ensure that the protection plate fits tightly to the battery unit;

[0020] S6. Fix the control circuit board on the outside of one of the protection boards, and connect the charging interface, the discharging interface and the communication interface;

[0021] S7. Insert the connecting rod into the connecting hole on the arc-shaped housing, ensure that the connecting rod passes through the entire battery unit, and connect the battery unit, the protection board and the control circuit board into one;

[0022] S8. Check the entire battery pack structure to ensure that all components are properly installed, all connections are secure, and perform electrical testing.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention adopts an arc structure, the outer arc surface and the inner arc surface are concentric circles, which is convenient for installation in the drill pipe. The battery pack structure is compactly designed. This structure can place more capacity batteries in a limited space and improve the endurance. This is particularly important for the long-term operation of the drilling measurement instrument in coal mines.

[0025] 2. The present invention 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 underground coal mines.

[0026] 3. The present invention connects the battery unit, the protection board and the control circuit board into one by a connecting rod, which has a compact structure and is easy to assemble. At the same time, the design of the battery hole makes it easier to insert and replace the battery, and is convenient for maintenance and repair. The battery units are connected by wires in the arc channel, which ensures a firm connection between the battery and the control circuit board and reduces the problem of poor contact caused by vibration or other external forces.

[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 It is an overall schematic diagram of the arc-shaped rechargeable battery pack structure for coal mines in the present invention.

[0030] Figure 2 It is a schematic structural diagram of the arc-shaped shell in the present invention.

[0031] Figure 3 The figure is a circuit connection diagram of the arc-shaped rechargeable battery pack for coal mines of the present invention.

[0032] Figure numerals: 1-connecting rod; 2-protection plate; 3-battery pack housing; 4-protection 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

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways 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 only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] 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 the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position 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.

[0036] Please refer to Figures 1 to 3 , which is a mining arc-shaped rechargeable battery pack structure, including a battery unit, a protection plate 2, a protection plate 4 and a control circuit board 5, all of which have a waist-shaped cross section; the protection plate 2 and the protection plate 4 are respectively fixedly arranged at both ends of the battery unit, and the control circuit board 5 is fixedly arranged on the outside of the protection plate 4;

[0037] 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 two 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 arranged 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 runs through both ends of the shell; the battery 6 is arranged in the battery hole; the batteries 6 are 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, wires 502, wires 503, and wires 504 respectively; the number of batteries 6 connected in parallel can be adjusted according to the actual space.

[0038] The outer arc surface and the inner arc surface are respectively provided with an outer arc channel 301 and an inner arc channel 302, which are parallel to the battery hole and pass through both ends of the arc shell. Each outer arc channel 301 and inner arc channel 302 are arranged between two adjacent battery holes. Wires are arranged in the outer arc channel 301 and the inner arc channel 302, and the batteries and the battery 6 and the control circuit board 5 are connected by wires. A sink 303 is provided at the end of the battery hole, and the wire passes through the sink 303 from the battery hole into the outer arc channel 301 and the inner arc channel 302.

[0039] A connecting hole 304 is also 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 board and the control circuit board 5 into one. The connecting rod 1 plays a role of fixed connection.

[0040] There are three connection holes 304 , each of which is located between two adjacent battery holes. A connection rod 1 is installed in each connection hole 304 .

[0041] 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. The control circuit board 5 is provided with a charging interface, a discharging interface and a communication interface, etc., which can charge the battery 6.

[0042] A method for assembling the above arc-shaped rechargeable battery pack for coal mines comprises the following steps:

[0043] S1, prepare battery cells, protection boards, control circuit boards 5, wires and connecting rods 1;

[0044] S2, inserting the battery 6 into the battery hole of the battery unit so that the battery 6 fits tightly in the battery hole;

[0045] S3, connecting the batteries 6 in each battery unit in parallel, and connecting the batteries 6 in adjacent battery units in series;

[0046] S4, pass the wire through the sink groove 303 of the battery hole, enter the outer arc channel 301 or the inner arc channel 302, and 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;

[0047] S5. Fix the protection plate 2 and the protection plate 4 at both ends of the battery unit to ensure that the protection plate fits tightly with the battery unit;

[0048] S6, fix the control circuit board 5 on the outside of one of the protection boards, and connect the charging interface, the discharging interface and the communication interface;

[0049] S7, insert the connecting rod 1 into the connecting hole 304 on the arc-shaped housing, ensure that the connecting rod 1 passes through the entire battery unit, and connect the battery unit, the protection board and the control circuit board 5 into one;

[0050] S8. Check the entire battery pack structure to ensure that all components are properly installed, all connections are secure, and perform electrical testing.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention 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 present invention.

Claims

1. A curved rechargeable battery pack structure for mining, characterized in that: It comprises a battery unit, a protection plate and a control circuit board, all of which have waist-shaped cross sections; the protection plates are fixedly arranged at both ends of the battery unit, 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 groups connected in series, and the battery group includes an arc-shaped shell and a battery; the arc-shaped shell includes an outer arc surface and an inner arc surface arranged coaxially, and the two ends of the outer arc surface and the inner arc surface are 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 the two ends of the shell; the battery is arranged in the battery holes; the batteries in each battery group are connected in parallel and then connected in series with the batteries in the adjacent battery group; The outer arc surface and the inner arc surface are both provided with arc channels, 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 are connected to each other and batteries to the control circuit board through the wires.

2. The arc-shaped rechargeable battery pack structure for coal mines according to claim 1 is characterized in that: A sink groove is arranged 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 is 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 is characterized in that: The arc-shaped shell is also provided with a connecting hole, in which a connecting rod is provided which penetrates the entire battery unit and connects the battery unit, the protection board and the control circuit board into one.

5. The arc-shaped rechargeable battery pack structure for coal mines according to claim 4 is characterized in that: There are a plurality of connection 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 is characterized in that: The battery is a rechargeable battery.

7. The arc-shaped rechargeable battery pack structure for coal mines according to claim 1 is 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, and all of them are intrinsically safe circuits; the control circuit board is provided with a charging interface, a discharging interface and a communication interface.

8. A method for assembling an arc-shaped rechargeable battery pack for coal mines as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Prepare battery cells, protection boards, control circuit boards, wires and connecting rods; S2. Insert the battery into the battery hole of the battery unit so that the battery fits tightly into the battery hole; S3, connecting the batteries in each battery unit in parallel, and connecting the batteries in adjacent battery units in series; S4. Pass the wire through the sink of the battery hole and enter the arc channel, and arrange the wire in the arc channel to ensure that the wire is firmly connected to the battery and the control circuit board; S5. Fix the protection plate at both ends of the battery unit to ensure that the protection plate fits tightly to the battery unit; S6. Fix the control circuit board on the outside of one of the protection boards, and connect the charging interface, the discharging interface and the communication interface; S7. Insert the connecting rod into the connecting hole on the arc-shaped housing, ensure that the connecting rod passes through the entire battery unit, and connect the battery unit, the protection board and the control circuit board into one; S8. Check the entire battery pack structure to ensure that all components are properly installed, all connections are secure, and perform electrical testing.

Images