Battery box structure facilitating maintenance

Abstract

The application discloses a battery box structure convenient to maintain, which comprises a box body, a battery pack and a wire holder. The box body is internally provided with a placing area. The battery pack is arranged in the placing area and comprises a plurality of battery modules. Two adjacent battery modules are connected in series through a conductive connecting piece. Each battery module is provided with a positive electrode lead column and a negative electrode lead column on the upper side, and two guide rings are arranged on the upper side of the battery module. The positive electrode lead column and the negative electrode lead column are arranged in the center of the guide ring in a one-to-one correspondence mode. The inner sidewall of the guide ring is a guide inclined surface. Two conductive sleeves are arranged on the lower side of the conductive connecting piece. The lower end of the conductive sleeve is provided with a conductive elastic sheet along the circumferential edge in a spaced mode. The positive electrode lead column and the negative electrode lead column are matched and inserted into the conductive sleeve in a one-to-one correspondence mode. The conductive elastic sheet is abutted against the guide inclined surface, so that the conductive elastic sheet is deformed to be abutted against the positive electrode lead column or the negative electrode lead column to realize conduction. The wire holder is movably arranged on the box body above the battery pack.

Description

Technical Field

[0001] This invention specifically relates to a battery box structure that is easy to maintain. Background Technology

[0002] Currently, battery boxes, as the core carriers of energy storage devices, require multiple battery modules to be connected in series via conductive connectors to meet power supply demands. Existing series connection structures for battery modules generally employ bolt-locked conductive connectors, fixing the connectors to the positive and negative terminals of the module. This structure has significant drawbacks in actual maintenance and repair: disassembling or assembling single or multiple battery modules requires removing the locking bolts one by one, which is cumbersome and time-consuming, and cannot achieve rapid disconnection of the multi-module series circuit, greatly reducing maintenance efficiency. Furthermore, bolts are prone to loosening and corrosion over time, leading to poor conductive contact and affecting power supply stability. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a battery box structure that is easy to maintain.

[0004] A battery box structure that is easy to maintain includes:

[0005] The housing has a storage area for placing the battery pack.

[0006] A battery pack is disposed in the placement area. The battery pack includes multiple battery modules, and two adjacent battery modules are connected in series in sequence through conductive connecting pieces.

[0007] The battery module has a positive electrode post and a negative electrode post on its upper side, and two guide rings are provided on each of them. The positive electrode post and the negative electrode post are respectively located at the center of the guide ring. The inner sidewall of the guide ring is a guide slope.

[0008] The conductive connector has two conductive sleeves on its lower side. The lower end of the conductive sleeve is provided with conductive springs at intervals along the circumference. The positive and negative leads can be inserted into the conductive sleeves in a one-to-one correspondence. The conductive springs can abut against the inclined surface, so that the conductive springs can deform and abut against the positive or negative leads respectively to conduct electricity.

[0009] The wire frame is vertically movably mounted on the housing and located above the battery pack. Several insulating sheets are spaced apart along its length on both sides, each corresponding to a conductive connecting piece. A connecting post extends integrally from the underside of the insulating sheets. The connecting post has a non-circular cross-section. Through-holes are formed in the conductive connecting pieces, and the connecting posts are inserted into these holes. A flange is located at the lower end of each connecting post below the conductive connecting piece. This flange allows the wire frame to move upward relative to the housing, simultaneously disengaging from the conductive connecting piece and causing the conductive spring or sleeve to disengage from the positive or negative terminal post. When the wire frame is locked to the housing, it presses against the upper side of the battery pack, and the conductive spring maintains contact with the positive or negative terminal post, ensuring continuity.

[0010] In one embodiment, the housing has a cavity, and first partitions are symmetrically and rotatably arranged on both sides of the cavity. The placement area is formed between the two first partitions, and a plurality of second partitions are provided in the placement area. The placement area is divided into a plurality of mounting cavities by the plurality of second partitions, and the mounting cavity facing the first partition has an opening that allows the battery module to pass through for installation or removal. The first partition can rotate and abut against the side of the battery module in the mounting cavity, so that the battery module is positioned and installed in the mounting cavity. L-shaped limiting plates are integrally formed and extended on both sides of the wire frame. The two L-shaped limiting plates can abut against the opposite outer sides of the two first partitions respectively, so that the first partitions remain abutting against the side of the battery module.

[0011] In one embodiment, shock-absorbing zones are formed on opposite sides of the two first partitions within the cavity, and the shock-absorbing zones are filled with buffer pads.

[0012] In one embodiment, a first wire groove is recessed on the upper side of the wire frame, and a plurality of wire-passing holes are respectively opened through both sides of the first wire groove.

[0013] In one embodiment, cable management components are provided at both ends of the first cable trough;

[0014] The cable management component includes two tension rollers. The first movable groove and the second movable groove pass through the two ends of the cable frame respectively. The first movable groove and the second movable groove are arranged vertically. The two tension rollers are movably arranged in the first movable groove and the second movable groove respectively. The box is provided with a transmission component that can drive the two tension rollers to move closer or further away from each other as the cable frame moves up and down.

[0015] When the wire frame is in the downward pressing connection state of the battery pack, the two tension rollers are in a relatively far connection state. The conductive connecting piece is connected with a wire, and one end of the wire passes through the wire hole and the first wire groove in sequence and is wound around the two tension rollers in sequence.

[0016] In one embodiment, the transmission component includes a plurality of connecting rods, each of which is hinged to the end of the housing and the tension roller respectively.

[0017] In one embodiment, the tensioning roller includes a roller body and a wire wheel rotatably mounted on the roller body via a bearing. The wire wheel has a plurality of second wire grooves recessed along its axial direction, and the wire can be fitted into the second wire grooves one by one.

[0018] In summary, the advantages of this invention over the prior art are:

[0019] This invention drives the displacement of all conductive connecting pieces synchronously by moving the wire frame up and down, realizing the rapid plugging and unplugging of all series circuits of the battery module in one go. It eliminates the need to disassemble and assemble the connecting parts one by one, greatly shortening the battery module maintenance and replacement time and reducing maintenance difficulty.

[0020] The guide ring's inclined surface, in conjunction with the conductive spring sheet, deforms and abuts against the guide post, achieving an adaptive and tight fit between the guide post and the conductive sleeve. This eliminates contact gaps, avoids loosening and poor contact, and improves conductivity stability and service life.

[0021] When the wire frame moves down and locks, it simultaneously presses against the battery pack, which has the dual functions of module clamping and positioning and electrical conduction. The structure has a high degree of integration and reduces the number of parts.

[0022] The wire frame, wire groove, and wire passage hole, together with the tension roller wire management component, can straighten the battery node current and voltage detection wires. When the wire frame is displaced, the wire tension is automatically adjusted to avoid wire pulling, tangling, and breakage, which is suitable for routine testing needs. Attached Figure Description

[0023] Figure 1 As one embodiment of the present invention Figure 2 Enlarged view of point A;

[0024] Figure 2 This is a cross-sectional view of a battery box structure that is easy to maintain, according to one embodiment of the present invention.

[0025] Figure 3 This is a perspective view of a battery box structure that is easy to maintain, according to one embodiment of the present invention.

[0026] Figure 4 As one embodiment of the present invention Figure 3 Enlarged view of point B;

[0027] Figure 5 This is a top view of a battery box structure that is easy to maintain, according to one embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the wire and tension roller winding in one embodiment of the present invention. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] like Figures 1 to 6 The present invention preferably provides a battery box structure that is easy to maintain, comprising: a box body 1, wherein a placement area for placing a battery pack is formed within the box body 1; a battery pack, wherein the battery pack is disposed in the placement area, the battery pack comprising a plurality of battery modules 2, adjacent battery modules 2 being connected in series via conductive connecting pieces 3; a battery module 2 having a positive electrode post 4 and a negative electrode post 5 on its upper side, and two guide rings 6 respectively provided on it, the positive electrode post 4 and the negative electrode post 5 being respectively located at the center of the guide ring 6, the inner ring sidewall of the guide ring 6 being a guide slope; a conductive connecting piece 3 having two conductive sleeves 7 respectively on its lower side, the lower end of the conductive sleeve 7 having conductive spring pieces 8 spaced apart along its circumference, the positive electrode post 4 and the negative electrode post 5 being able to be inserted into the conductive sleeve 7 in a corresponding manner, the conductive spring pieces 8 being able to abut against the guide slope, so that the conductive spring pieces 8 can deform to correspond to the positive electrode post 4 and the negative electrode post 5 respectively. The positive electrode post 4 or the negative electrode post 5 are connected and conductive; the wire frame 12 is movably mounted on the housing 1 and located above the battery pack. Several insulating sheets 9 are spaced apart along its length on both sides of the frame. Each insulating sheet 9 corresponds to one of the conductive connecting sheets 3. A connecting post 10 is integrally formed and extends from the lower side of the insulating sheet 9. The cross-section of the connecting post 10 is not perfectly circular. A through hole is formed in the conductive connecting sheet 3, and the connecting post 10 is inserted into the through hole in a corresponding manner. The lower end of the connecting post 10 and below the conductive connecting piece 3 is provided with a flange 11. The flange 11 allows the wire frame 12 to move upward relative to the housing 1 and simultaneously move upward with the conductive connecting piece 3, causing the conductive spring piece 8 or the conductive sleeve 7 to disengage from the positive electrode post 4 or the negative electrode post 5. When the wire frame 12 is in the connection state of locking the housing 1, the wire frame 12 presses against the upper side of the battery pack, and at this time the conductive spring piece 8 maintains a contact and conduction state with the positive electrode post 4 or the negative electrode post 5.

[0031] Specifically, the internal storage area of ​​the housing is used to hold the battery pack, and multiple battery modules are connected in series through conductive connecting pieces; the positive and negative terminal guide posts of the battery modules have external guide rings, and the inclined surfaces provide guidance for the conductive springs;

[0032] During assembly, the wire frame moves downward to a locked position, pressing against the battery pack for positioning. At the same time, it moves the conductive connecting piece under the insulating sheet downward, and the guide post is inserted into the conductive sleeve. The conductive spring piece deforms along the guide slope and tightly abuts against the outer wall of the guide post, realizing the series connection of the modules. During maintenance, the wire frame is pulled upward, and the flange at the lower end of the connecting post abuts against the conductive connecting piece and moves upward synchronously, driving the conductive sleeve and conductive spring piece to disengage from the guide post, disconnecting all module series circuits at once, realizing rapid disconnection.

[0033] An electric telescopic rod (not shown in the figure) is fixedly installed inside the box. The telescopic end of the electric telescopic rod (not shown in the figure) is fixedly connected to the wire frame. The electric telescopic rod (not shown in the figure) is used to drive the wire frame to move vertically up and down along the box.

[0034] During maintenance, the vertical lifting and lowering of the telescopic end of the electric telescopic pole is controlled, which directly drives the wire frame to complete the up and down displacement. At the same time, all conductive connecting pieces are plugged in and disconnected. The entire process does not require manual contact with live parts and conductive structures, avoiding the risk of electric shock and realizing automated, unmanned, and safe disassembly and assembly.

[0035] The housing integrates a current detection module, which is electrically connected to the battery pack in series circuit. The current detection module is used to detect the circuit current in real time.

[0036] The current detection module collects the current data of the battery module series circuit in real time. Under normal conduction conditions, there is a current signal in the module feedback circuit. When the wire frame moves upward and the conductive spring and conductive sleeve are separated from the guide post, the series circuit is broken. The current detection module immediately recognizes the zero current state and outputs a power-off feedback signal to confirm that the circuit is completely de-energized, eliminate the safety hazards of live maintenance, and form an electrical safety interlock.

[0037] The insulating sheet is integrally formed on the lower part of the wire frame and is arranged vertically in a one-to-one correspondence with the conductive connecting sheet. The lower end of the insulating sheet extends downward to form a connecting post with a non-circular cross-section. A through hole adapted to the shape of the connecting post is vertically opened in the middle of the conductive connecting sheet. During assembly, the connecting post is inserted into the through hole from top to bottom with a clearance fit. The lower end of the connecting post protrudes to the bottom of the conductive connecting sheet and extends radially outward to form a flange. The outer diameter of the flange is larger than the diameter of the through hole, so that the flange forms an upward supporting and limiting structure.

[0038] The conductive connecting piece is movably sleeved on the connecting post through a perforation, and the two are mechanically floating: the conductive connecting piece can float slightly up and down within the axial range of the connecting post, and because the connecting post has a non-circular cross section, the conductive connecting piece is circumferentially limited and cannot rotate relative to the insulating sheet; when the wire frame is pressed down, the insulating sheet and the conductive connecting piece are rigidly pressed together, and the wire frame moves down as a whole, causing the insulating sheet to fall synchronously to press the conductive connecting piece to complete the insertion and conduction; when the wire frame is pulled up, the flange below the insulating sheet supports the conductive connecting piece upwards, causing it to move upwards synchronously to complete the insertion and removal to disconnect the power.

[0039] The current and voltage detection wires led out from the conductive connecting piece are independently arranged in the wire groove of the wire frame, without contact or entanglement with the insulating sheet.

[0040] Furthermore, the wire frame, insulating sheet, connecting post, and flange are all made of high-insulation rigid engineering plastic, and are in complete insulation contact with the conductive connecting sheet made of metal, with no electrical conduction path between them.

[0041] The insulating sheet only bears the mechanical load and linkage drive function, does not participate in the current transmission between battery modules, and does not make conductive contact with the positive electrode post, negative electrode post, conductive sleeve and conductive spring. It will not form current shunting, short circuit or contact resistance, and does not affect the conductivity and current and voltage detection accuracy of the conductive connecting piece at all.

[0042] Furthermore, the housing 1 has a cavity, and first partitions 13 are symmetrically and rotatably arranged on both sides of the cavity. The placement area is formed between the two first partitions 13. Several second partitions 14 are provided in the placement area. The placement area is divided into several mounting cavities 15 by the several second partitions 14. The mounting cavity 15 facing the first partition 13 has an opening that allows the battery module 2 to pass through for installation or removal. The first partition 13 can rotate and abut against the side of the battery module 2 in the mounting cavity 15 so that the battery module 2 is positioned and installed in the mounting cavity 15. L-shaped limiting plates 16 are integrally formed and extended on both sides of the wire frame 12. The two L-shaped limiting plates 16 can abut against the opposite outer sides of the two first partitions 13 respectively, so that the first partitions 13 remain abutting against the side of the battery module 2.

[0043] Specifically, the internal cavity of the box is divided by a first partition and a second partition. The second partition forms an independent mounting cavity, and the battery module is quickly installed from the opening of the mounting cavity. When the wire frame is locked downwards, the L-shaped limiting plates on both sides move down simultaneously and abut against the outside of the first partition, restricting the rotation of the first partition and pressing the battery module in the mounting cavity with the first partition to achieve lateral positioning of the module. When the wire frame is moved upwards for disassembly, the L-shaped limiting plates disengage from the first partition, releasing the limiting, and the first partition can be rotated and opened to facilitate quick installation and removal of the battery module from the opening.

[0044] Furthermore, shock-absorbing zones 17 are formed on opposite sides of the two first partitions 13 within the cavity, and the shock-absorbing zones 17 are filled with buffer pads.

[0045] Specifically, an independent shock-absorbing zone is formed on the outside of the first partition, and the inside is filled with a buffer pad. When the battery box is subjected to external vibration, the buffer pad absorbs the impact force and transmits the buffer force to the battery module through the first partition, thereby reducing the vibration amplitude of the module, preventing the module from loosening and the conductive connection parts from falling off, and improving the structural seismic performance.

[0046] Furthermore, a first wire groove 18 is recessed on the upper side of the wire frame 12, and several wire holes 19 are respectively opened through both sides of the first wire groove 18.

[0047] Specifically, the first wire slot on the upper side of the wire frame is used to store the battery node current and voltage detection wires, and the wire through hole connects the wire slot to the conductive connecting piece area; after the detection wires are led out from the conductive connecting piece, they pass through the wire through hole and are neatly stored in the first wire slot, avoiding the wires from being exposed, tangled, or worn, thus achieving neat and protected wiring.

[0048] Furthermore, the first wire groove 18 is provided with wire management components at both ends; the wire management components include two tension rollers 20, the wire frame 12 passes through the first movable groove 21 and the second movable groove 22 at both ends respectively, the first movable groove 21 and the second movable groove 22 are arranged vertically, and the two tension rollers 20 are movably arranged in the first movable groove 21 and the second movable groove 22 respectively. The housing 1 is provided with a transmission component 23 that can drive the two tension rollers 20 to move closer or further away from each other as the wire frame 12 moves up and down; when the wire frame 12 is in the connection state of pressing the battery pack downward, the two tension rollers 20 are in the connection state of being relatively far apart, the conductive connecting piece 3 is connected with a wire 25, one end of the wire 25 passes through the wire hole 19 and the first wire groove 18 in sequence and is wound around the two tension rollers 20 in sequence.

[0049] Specifically, tension rollers are set at both ends of the first trough to form a wire management component, and the detection wire is wound around two staggered tension rollers; when the wire frame is locked downwards, the transmission component drives the two tension rollers away from each other, stretching the wire to tighten it and preventing the line from loosening; when the wire frame is disassembled upwards, the transmission component drives the two tension rollers to move closer to each other, releasing the wire's excess and preventing the wire from breaking when the wire frame is displaced, thus adapting to the adaptive adjustment of the line frame as it rises and falls.

[0050] Furthermore, the transmission component 23 includes a plurality of connecting rods 24, which are respectively hinged between the ends of the housing 1 and the tension roller 20.

[0051] Specifically, the connecting rod is hinged to the end of the housing and the tensioning roller, forming a linkage transmission structure. When the wire frame moves up and down, it drives the tensioning roller to rise and fall synchronously. The connecting rod swings automatically with the position of the tensioning roller. By changing the hinge angle of the connecting rod, the two tensioning rollers are driven to automatically complete the relative approach or distance movement. No additional driving components are required to achieve mechanical linkage tensioning.

[0052] Furthermore, the tensioning roller 20 includes a roller body 26 and a sheave 27 rotatably mounted on the roller body 26 via a bearing. The sheave 27 has a plurality of second grooves recessed along its axial direction, and the wires 25 can be fitted into the second grooves one by one.

[0053] Specifically, the tension roller body serves as the supporting base, and the sheave can rotate freely through the bearing; the detection wire is embedded in the second groove of the sheave. When the wire is tensioned or relaxed, the sheave rotates adaptively with the wire tension, reducing frictional loss between the wire and the roller body. At the same time, the second groove limits the wire, preventing the wire from slipping and improving the stability of wire management.

[0054] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery box structure that is easy to maintain, characterized in that, include: The housing (1) has a placement area for placing the battery pack inside; A battery pack is provided in the placement area. The battery pack includes multiple battery modules (2), and two adjacent battery modules (2) are connected in series in sequence through conductive connecting pieces (3). The battery module (2) has a positive electrode post (4) and a negative electrode post (5) on its upper side, and two guide rings (6) are provided on it. The positive electrode post (4) and the negative electrode post (5) are respectively located at the center of the guide ring (6), and the inner ring sidewall of the guide ring (6) is a guide slope. The conductive connecting piece (3) has two conductive sleeves (7) on its lower side. The lower end of the conductive sleeve (7) is provided with conductive spring pieces (8) at intervals along the circumference. The positive electrode post (4) and the negative electrode post (5) can be inserted into the conductive sleeve (7) in a one-to-one correspondence. The conductive spring piece (8) can abut against the inclined surface, so that the conductive spring piece (8) can deform and abut against the positive electrode post (4) or the negative electrode post (5) respectively to conduct electricity. A wire frame (12) is vertically mounted on the housing (1) and located above the battery pack. Several insulating sheets (9) are spaced apart along its length on both sides. Each insulating sheet (9) corresponds to a conductive connecting sheet (3). A connecting post (10) is integrally formed and extends from the lower side of the insulating sheet (9). The cross-section of the connecting post (10) is not perfectly circular. A through hole is formed in the conductive connecting sheet (3), and the connecting post (10) is inserted into the through hole in a corresponding manner. The lower end of the connecting post (10) is located on the conductive connecting sheet (3). The electrical connector (3) is provided with a flange (11) below it. The flange (11) allows the wire frame (12) to move upward relative to the housing (1) and simultaneously move upward, causing the conductive spring (8) or conductive sleeve (7) to disengage from the positive electrode post (4) or negative electrode post (5). When the wire frame (12) is in the connection state of locking the housing (1), the wire frame (12) presses against the upper side of the battery pack, and at this time the conductive spring (8) maintains a contact and conduction state with the positive electrode post (4) or negative electrode post (5).

2. The battery box structure for easy maintenance according to claim 1, characterized in that: The housing (1) has a cavity, and first partitions (13) are symmetrically and rotatably arranged on both sides of the cavity. The placement area is formed between the two first partitions (13). Several second partitions (14) are provided in the placement area. The placement area is divided into several installation cavities (15) by the several second partitions (14). The side of the installation cavity (15) facing the first partition (13) is an opening that allows the battery module (2) to pass through for installation or removal. The first partition (13) can rotate and abut against the side of the battery module (2) in the installation cavity (15) so that the battery module (2) is positioned and installed in the installation cavity (15). The wire frame (12) has L-shaped limiting plates (16) integrally formed on both sides. The two L-shaped limiting plates (16) can abut against the opposite outer sides of the two first partitions (13) respectively, so that the first partitions (13) remain abut against the side of the battery module (2).

3. The battery box structure for easy maintenance according to claim 1, characterized in that: The cavity has shock-absorbing zones (17) formed on opposite sides of the two first partitions (13), and the shock-absorbing zones (17) are filled with buffer pads.

4. The battery box structure for easy maintenance according to claim 1, characterized in that: A first wire groove (18) is recessed on the upper side of the wire frame (12), and several wire holes (19) are respectively opened through both sides of the first wire groove (18).

5. The battery box structure for easy maintenance according to claim 4, characterized in that: The first wire groove (18) is provided with wire management components at both ends; The cable management component includes two tension rollers (20). The two ends of the cable frame (12) pass through the first movable groove (21) and the second movable groove (22) respectively. The first movable groove (21) and the second movable groove (22) are arranged vertically. The two tension rollers (20) are movably arranged in the first movable groove (21) and the second movable groove (22) respectively. The housing (1) is provided with a transmission component (23) that can drive the two tension rollers (20) to move closer or further away from each other as the cable frame (12) moves up and down. When the wire frame (12) is in the state of pressing the battery pack downwards, the two tension rollers (20) are in the state of being relatively far apart. The conductive connecting piece (3) is connected with a wire (25). One end of the wire (25) passes through the wire hole (19) and the first wire groove (18) in sequence and is wound around the two tension rollers (20) in sequence.

6. The battery box structure for easy maintenance according to claim 5, characterized in that: The transmission component (23) includes several connecting rods (24), which are respectively hinged between the end of the housing (1) and the tension roller (20).

7. The battery box structure for easy maintenance according to claim 5, characterized in that: The tensioning roller (20) includes a roller body (26) and a wire wheel (27) rotatably mounted on the roller body (26) via a bearing. The wire wheel (27) has several second wire grooves recessed along its axial direction, and the wire (25) can be fitted into the second wire grooves one by one.

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