A BMS component suitable for AGV power supply system

Abstract

The present invention relates to the field of power supply protection technology, in particular to a BMS component suitable for an AGV power supply system, comprising a variable resistor, including two variable resistor cylinders coaxially arranged in a horizontal direction, an insulating column slidably sleeved in a through groove in the middle of the variable resistor cylinder, and an L-shaped mounting shell arranged below the variable resistor cylinder, wherein n slots are arranged at the end of the variable resistor cylinder along a circumferential array, and connecting sleeves are fixedly sleeved at both ends of the slots, and an insulating head is fixedly arranged at one end of the connecting sleeve located outside the variable resistor cylinder; and an adjusting component arranged on one side of the variable resistor component, including a first gear plate meshing with a gear ring, a motor arranged on one side of the axis of the first gear plate, and a positioning plate arranged on one side of the motor. The BMS component can automatically adjust the resistance in the charging circuit according to the specifications of the charger and the use of the battery pack, thereby playing a good protective role for the charger and the battery pack. At the same time, the component can also automatically cut off the power when the battery is over-discharged, and has good practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply protection, and in particular to a BMS component suitable for an AGV power supply system. Background Art

[0002] AGV power system is also called mobile power system. With the continuous development of science and technology, emerging technologies such as electric vehicles, drones, and mobile robots are constantly improving. Battery technologies such as mobile power systems have become important energy storage management carriers. During use, power systems are prone to problems such as overcharging, over-discharging, and short circuits, which may cause battery damage or even endanger safety. Therefore, the BMS battery protection system came into being and became the key to ensuring battery safety. The main functions of the BMS battery protection system are battery charge and discharge status monitoring, overcharge and over-discharge protection, temperature protection, and balance management, which improve battery performance, ensure safety, and extend battery life.

[0003] During the charging process of the battery, due to the different battery specifications (common ones are 48V / 60V / 72V and 12ah / 20ah / 32ah, etc.), the specifications of the chargers used for charging the batteries will also be different accordingly, which makes it impossible to mix the chargers. Even if they can be mixed, the different battery specifications will have a certain impact on the service life of the batteries. In view of this, the existing public document CN116505107B-A battery BMS protection board and battery assembly discloses a battery protection method for the above-mentioned problem. When the specifications do not match during charging, the charging circuit will be automatically powered off. Although such a protection method can protect the battery to a certain extent, it still cannot solve the problem of charger sharing. Moreover, as the battery is used for a long time, the data attributes of the battery will also change (resistance, voltage, current, etc.), and this change will also have a certain impact on the charger.

[0004] In addition, for batteries used in self-propelled equipment, the equipment often encounters obstacles during the walking process, causing the walking wheels to get stuck (such as steps, rope entanglement, etc.). In this case, the equipment will not move but the motor will continue to work. This state for a long time will cause the battery to over-discharge and heat up, and even cause the battery to burn;

[0005] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the problem that the charger of the above-mentioned existing mobile power supply cannot be shared during charging and the battery may damage the charger with long-term use, a BMS component suitable for an AGV power system is proposed.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a BMS component suitable for an AGV power supply system, comprising a variable resistor, including two variable resistor cylinders coaxially arranged in a horizontal direction, an insulating column slidably sleeved in a through groove in the middle of the variable resistor cylinder, and an L-shaped mounting shell arranged below the variable resistor cylinder, the end of the variable resistor cylinder is provided with n slots along a circumferential array, and connecting sleeves are fixedly sleeved at both ends of the slots, an insulating head is fixedly provided at one end of the connecting sleeve located outside the variable resistor cylinder, and a conductive head is embedded and fixed in the insulating head, a resistor column is placed in the slot, and the two ends of the resistor column are respectively abutted against the end faces of the two conductive heads, and the resistance values ​​of the resistor columns in the n slots are arranged in an increasing or decreasing manner along the same clockwise direction; first elastic metal plates are symmetrically fixedly provided at both ends of the variable resistor cylinder, and the first elastic metal plates A first conductive column is fixedly provided on one side of the upper end, and a first conductive protrusion is fixedly provided on one side of the lower end of the first elastic metal plate. The first conductive protrusion is located on one side of the rotating track surface of the conductive head and abuts against any end surface of the conductive head. The upper ends of the two first elastic metal plates between the two variable resistor cylinders share a first conductive column, and one end of the first conductive column is spirally fitted with a first conductive bolt. The first conductive column is fixedly connected to the side wall of the insulating column through an insulating plate. A conductive rod is fixedly sleeved in the insulating column, and both ends of the conductive rod are spirally fitted with the first conductive bolts; a gear ring is fixedly sleeved on the outer wall of the middle part of the variable resistor cylinder; and an adjusting member arranged on one side of the variable resistor member includes a first gear plate meshing with the gear ring, a motor arranged on one side of the axis of the first gear plate, and a positioning plate arranged on one side of the motor.

[0009] The beneficial effects of the present invention are as follows: when the BMS assembly is in use, the resistor column in one variable resistor cylinder forms a parallel circuit with the battery through the first elastic metal plates at both ends, and the resistor column in the other variable resistor cylinder forms a series circuit with the battery through the first elastic metal plates at both ends. According to the principle that the current in the series circuit remains unchanged but the voltage changes, and the voltage in the parallel circuit remains unchanged but the current changes, the current and voltage finally input into the battery are adjusted. The gear plate drives the gear ring to rotate, so that the size of the resistance in the circuit can be adjusted. The current and voltage of the entire circuit are changed to adapt to the battery through the change of the resistance. Such a design method can make the current and voltage finally output to the battery compatible with the battery regardless of the size change of the current and voltage input by the charger, thereby realizing the sharing of the charger;

[0010] In addition, as the battery is used, the current and voltage it can receive will also change. At this time, the above-mentioned resistance adjustment method can be used to adapt to the requirements of the battery, thereby providing a certain degree of protection for the charger.

[0011] As a preferred solution of the BMS component suitable for the AGV power supply system of the present invention, an external thread is provided on the outer wall of the connecting sleeve, and an internal thread spirally matched with the external thread is provided on the inner wall of the slot, and disassembly holes are symmetrically provided on the end face of the insulating head.

[0012] As a preferred solution of the BMS component of the AGV power supply system of the present invention, wherein: limiting plates are symmetrically arranged on both sides of the gear ring, one end of the limiting plate is fixedly connected to the side wall of the L-shaped mounting shell, and at the same time, a limiting groove for the sliding sleeve of the variable resistor cylinder is opened on the other end of the L-shaped mounting shell, and a limiting ring is fixedly sleeved on the outer side wall of the variable resistor cylinder on the other side of the limiting plate away from the gear ring; and multiple mounting holes are opened on both plate surfaces of the L-shaped mounting shell.

[0013] As a preferred solution of a BMS component suitable for an AGV power supply system of the present invention, wherein: a first conductive bolt located between two variable resistor cylinders is connected to an electrode column of a battery pack through an electrical conductor, and a monitoring module is also connected in series to the electrical conductor, and another electrode column of the battery pack is connected to a first conductive bolt at one end of a conductive rod through an electrical conductor, and the first conductive bolt is also connected to a first conductive bolt on a first conductive column above it through an electrical conductor; the monitoring module is electrically connected to a BMS protection board through a conductive wire, and the BMS protection board is electrically connected to a motor through a conductive wire.

[0014] As a preferred solution of a BMS component suitable for an AGV power supply system of the present invention, wherein: a rotating sleeve is fixedly sleeved in the middle of the first gear disk, and a polygonal groove is opened on the rotating sleeve along the axial direction, and the two ends of the rotating sleeve are respectively rotatably sleeved on the two limit plates through rolling bearings; the rotating shaft embedded in the output end of the motor is slidably sleeved in the two polygonal grooves, and two polygonal sleeves for matching with the polygonal groove clearances are fixedly sleeved on the side wall of the rotating shaft, when one of the polygonal sleeves matches with any one of the polygonal groove clearances, the other polygonal sleeve and the other polygonal groove are staggered; a mounting plate is fixedly connected to the outer side of the motor, and a guide column parallel to the axis of the rotating shaft is symmetrically slidably sleeved on the free end of the mounting plate, one end of the two guide columns is fixedly connected to the same positioning plate, and the other end of the guide column is fixedly connected to the limit plate, a first spring is slidably sleeved on the guide column between the mounting plate and the positioning plate, and an electromagnetic plate is fixedly provided on the side of the positioning plate between the two guide columns.

[0015] As a preferred solution of a BMS component suitable for an AGV power supply system of the present invention, the number of sides of the multilateral slot and the multilateral sleeve are both n.

[0016] As a preferred solution of a BMS component suitable for an AGV power supply system of the present invention, wherein: an outer sleeve is fixedly sleeved on the L-shaped mounting shell on one side of the center of the first gear disk, and a convex groove for gap fitting of the lock column is opened on the outer sleeve, and the end close to the first gear disk is the open end of the convex groove, and the axial cross-section of the lock column is T-shaped; a magnetic disk is fixedly provided on one end of the lock column located on the inner side of the convex groove, an electromagnetic column is fixedly provided on the inner end surface of the convex groove, and the side surface close to the electromagnetic column and the magnetic disk are arranged in the same sex, and a second spring is slidably sleeved on the lock column located inside the convex groove; one end of the lock column located outside the convex groove is arranged as a flat head.

[0017] As a preferred solution of a BMS component suitable for an AGV power supply system of the present invention, it further includes: a power-off component arranged on the outside of a vertical plate of an L-shaped mounting shell, the power-off component includes an outer protective shell with a U-shaped horizontal cross-section, a mounting block arranged inside the outer protective shell and with an L-shaped vertical cross-section, and a distribution column arranged on the inner side of a corner of the mounting block; two first mounting grooves are arranged in parallel on the side surface of the vertical portion of the mounting block, and a second mounting groove is arranged on the side surface of the horizontal portion of the mounting block in alignment with the end of the first mounting groove, and two third mounting grooves are arranged on the side wall of the distribution column in a one-to-one correspondence with the first mounting groove or / and the second mounting groove; a second elastic metal plate is inserted and fixed in the first mounting groove, and a third elastic metal plate is inserted and fixed in the second mounting groove. An elastic metal ring is inserted and fixed in the third mounting groove; a second conductive column is fixed on the upper end of the second elastic metal plate, and a first elastic protrusion is arranged at the lower end of the second elastic metal plate; a second elastic protrusion is arranged at one end of the third elastic metal plate close to the second elastic metal plate, and a third conductive column is arranged at the other end of the third elastic metal plate; two second conductive protrusions respectively engaging with the first elastic protrusion and the second elastic protrusion are arranged at ninety degrees on the outer wall of the elastic metal ring; a rotating column is fixedly sleeved in the distribution column, and both ends of the rotating column are rotatably connected to the outer casing through rolling bearings; second conductive bolts are screwed on the free ends of the second conductive column and the third conductive column, and the third conductive column passes through the vertical plate of the outer casing.

[0018] Another beneficial effect of the present invention is that during the discharge process of the battery, when the battery is detected to be overheated and the temperature is high, the BMS component will automatically control the rotating column to drive the distribution column to rotate, and then the distribution column drives the elastic metal ring to rotate, so that the second conductive protrusion is separated from the first elastic protrusion and the second elastic protrusion respectively, thereby realizing automatic power-off of the battery output, which can play a good protective role for the battery and avoid safety hazards caused by overheating of the battery discharge.

[0019] As a preferred solution of the BMS component suitable for the AGV power supply system of the present invention, the mounting block is fixedly connected to the vertical plate of the outer protective shell, the two outer side walls of the opening end of the outer protective shell are symmetrically fixed with mounting strips, and the mounting strips are fixedly connected to the outer side walls of the L-shaped mounting shell.

[0020] As a preferred solution of a BMS component suitable for an AGV power supply system of the present invention, wherein: a third gear plate is fixedly sleeved on the rotating column at one end of the distribution column, a second gear plate is fixedly sleeved on the rotating shaft between the two polygonal sleeves, the third gear plate and the second gear plate are respectively engaged with the two teeth on the bottom surface of the linkage bar, and the linkage bar slides through the L-shaped mounting shell; a positioning strip is fixedly provided on the top surface of the linkage bar along the long side direction, and a positioning groove for the clearance fit of the positioning strip is opened on the L-shaped mounting shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0022] Figure 1 The figure is a schematic diagram of the overall structure of a BMS component suitable for an AGV power supply system according to the present invention.

[0023] Figure 2 For the present invention Figure 1 Right rear view of the structure.

[0024] Figure 3 For the present invention Figure 1 Vertical cross-sectional view of the structure along the axial direction of the insulating column.

[0025] Figure 4 For the present invention Figure 1 Vertical cross-sectional view of the structure in the direction of the lock column axis.

[0026] Figure 5 For the present invention Figure 1 Vertical cross-sectional view of the structure along the long side of the linkage bar.

[0027] Figure 6 It is a schematic diagram of the coordination of the varistor tube and the insulating column in the present invention.

[0028] Figure 7 For the present invention Figure 6 Exploded view of the structure.

[0029] Figure 8 It is a schematic diagram of the cooperation between the adjusting member and the L-shaped mounting shell in the present invention.

[0030] Fig. 9 For the present invention Figure 8 Exploded view of the structure.

[0031] Fig.10 It is a schematic diagram of the overall structure of the linkage bar in the present invention.

[0032] Fig.11 It is a schematic diagram of the overall structure of the circuit breaker in the present invention.

[0033] Fig.12 For the present invention Fig.11 Exploded view of the structure.

[0034] Fig.13 For the present invention Fig.11 Vertical cross-section of the structure at the location of the elastic metal ring.

[0035] Fig.14 It is a simulated flow diagram of the charge in the variable resistor of the present invention. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0040] Reference Figure 1 and Figure 2, which is the first embodiment of the present invention, provides a BMS component suitable for an AGV power supply system, in which a variable resistor 100 is connected to a circuit between a charger and a battery, and a regulating element 200 is used to control the resistance change in the variable resistor 100, and a series and parallel arrangement is used to achieve regulation of output and input current and voltage.

[0041] Specifically, it includes a variable resistor element 100, including two variable resistor cylinders 101 coaxially arranged in the horizontal direction, an insulating column 102 slidably sleeved in a middle through groove 101f of the variable resistor cylinder 101, and an L-shaped mounting shell 103 arranged below the variable resistor cylinder 101, and a gear ring 101a is fixedly sleeved on the middle outer wall of the variable resistor cylinder 101; and an adjusting member 200 arranged on one side of the variable resistor element 100, including a first gear plate 201 meshing with the gear ring 101a, a motor 202 arranged on one side of the axis of the first gear plate 201, and a positioning plate 203 arranged on one side of the motor 202, and the gear ring 101a can drive the variable resistor cylinder 101 to rotate about its own axis through the rotation of the first gear plate 201.

[0042] See Figure 3 and Figure 7 As shown, n slots 101b are provided at the end of the varistor cylinder 101 along a circumferential array, and connecting sleeves 101e are fixedly sleeved at both ends of the slots 101b, an insulating head 101e-1 is fixedly provided at one end of the connecting sleeve 101e located outside the varistor cylinder 101 to avoid conduction, and a conductive head 101e-2 is embedded and fixed in the insulating head 101e-1 to achieve conduction, a resistor column 101d is placed in the slot 101b, and the two ends of the resistor column 101d are respectively abutted on the end surfaces of the two conductive heads 101e-2, and the resistance values ​​of the resistor columns 101d in the n slots 101b are set to increase or decrease in the same clockwise direction, and this setting can achieve different resistance values ​​in each slot 101b;

[0043] When the above arrangement is in use, the cooperation between the resistor column 101d and the conductive heads 101e-2 at both ends of the resistor column 101d can realize a path section to facilitate the transmission of current thereon.

[0044] Furthermore, an external thread 101e-4 is provided on the outer wall of the connecting sleeve 101e, and an internal thread 101b-1 spirally matched with the external thread 101e-4 is provided on the inner wall of the slot 101b, thereby facilitating the disassembly of the connecting sleeve 101e by the staff, thereby facilitating the replacement of the resistor column 101d, and the end face of the insulating head 101e-1 is symmetrically provided with disassembly holes 101e-3. The setting of the disassembly holes 101e-3 facilitates the staff to realize the rotation of the connecting sleeve 101e by tools.

[0045] See Figure 3 , Figure 6 and Figure 7 As shown, the two ends of the variable resistor cylinder 101 are symmetrically fixed with a first elastic metal plate 102b, and the upper end side of the first elastic metal plate 102b is fixed with a first conductive column 102b-1, and the lower end side of the first elastic metal plate 102b is fixed with a first conductive protrusion 102b-2 to achieve electrical conduction. The first conductive protrusion 102b-2 is located on one side of the rotating track surface of the conductive head 101e-2 and abuts against any end surface of the conductive head 101e-2. This arrangement can realize the switching of the first conductive protrusion 102b-2 between various conductive heads 101e-2, thereby realizing the adjustment of the resistance value. The upper ends of the two first elastic metal plates 102b between the two varistor cylinders 101 share a first conductive column 102b-1, and one end of the first conductive column 102b-1 is screwed with a first conductive bolt 102d, so as to facilitate the fixed connection of the end of the electric wire. The first conductive column 102b-1 is fixedly connected to the side wall of the insulating column 102 through the insulating plate 102a. A conductive rod 102c is fixedly sleeved in the insulating column 102. The insulating column 102 plays an insulating protection role on the outer side of the conductive rod 102c, and both ends of the conductive rod 102c are screwed with the first conductive bolt 102d;

[0046] When the above arrangement is in use, a conductive rod 102c at one end of the variable resistor cylinder 101 and the first conductive column 102b-1 are respectively connected to the positive and negative electrodes of the charging slot, and the first conductive bolt 102d between the two variable resistor cylinders 101 is connected to an electrode column of the battery pack through an electric wire, and the electric wire is also connected in series with a monitoring module, and the other electrode column of the battery pack is connected to the first conductive bolt 102d at the other end of the conductive rod 102c through an electric wire, and the first conductive bolt 102d is also connected to the first conductive bolt 102d on the first conductive column 102b-1 above it through an electric wire, so that an electric circuit can be formed, and the two variable resistor cylinders 101 are in the circuit, one of the variable resistor cylinders 101 is in series with the battery pack, and the other variable resistor cylinder 101 is in parallel with the battery pack;

[0047] In order to understand the circuit more vividly, the flow of charge in the circuit is described in a simulated way. Fig.14The arrow in the middle indicates the direction of current flow. In the charging state, the charge in the charging slot first enters through the first conductive column 102b-1 at one end of the varistor cylinder 101, and is transmitted through the resistor column 101d in the first varistor cylinder 101 by the transmission of the first elastic metal plate 102b, and then is diverted at the first elastic metal plate 102b between the two varistor cylinders 101. A portion of the charge enters the battery pack through the first conductive bolt 102d and the electrical conductor thereon to charge the battery pack, and another portion of the charge enters the resistor column 101d in the other varistor cylinder 101 through the first conductive protrusion 102b-2. Then, the charge after the battery pack and the other varistor cylinder 101 is respectively input into the other end of the conductive rod 102c, and is transmitted through the conductive rod 102c to the first conductive bolt 102d connected to the charging slot to form an electrical circuit.

[0048] Furthermore, the monitoring module (A in the figure) is electrically connected to the BMS protection board (B in the figure) through a conductive line, and the BMS protection board is electrically connected to the motor 202 through a conductive line. The monitoring module is used to monitor the current and voltage input into the battery pack (C in the figure). When the monitored data does not meet the input requirements of the battery pack, the signal is transmitted to the BMS protection board, and the BMS protection board controls the motor 202 to work, so as to realize the rotation of the variable resistance cylinder 101, thereby facilitating the adjustment of the resistance.

[0049] In actual use, the circuit resistance value generated by the cooperation between the two variable resistor cylinders 101 is preset, and the BMS protection board can automatically adjust it as needed.

[0050] See Figure 3 , Figure 6 and Figure 8 As shown, limiting plates 103a are symmetrically arranged on both sides of the gear ring 101a, one end of the limiting plate 103a is fixedly connected to the side wall of the L-shaped mounting shell 103, and a limiting groove 103a-1 for sliding sleeve of the varistor cylinder 101 is opened on the other end of the L-shaped mounting shell 103, and a limiting ring 101c is fixedly sleeved on the outer side wall of the varistor cylinder 101 on the other side of the limiting plate 103a away from the gear ring 101a. This arrangement can realize the free rotation of the varistor cylinder 101 relative to the limiting plate 103a on the one hand, and limit the position between the varistor cylinder 101 and the limiting plate 103a on the other hand;

[0051] Furthermore, a plurality of mounting holes 103 b are provided on both panels of the L-shaped mounting shell 103 to facilitate the fixed installation of the entire assembly in the device. Example 2

[0052] Reference Figure 2 , Figure 6 , Figure 8 and Fig. 9 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that in order to facilitate the better implementation of the present invention, the structure of the adjusting member 200 in the invention is detailed, so as to facilitate the driving of the variable resistor cylinder 101 by the adjusting member 200.

[0053] Specifically, a rotating sleeve 201a is fixedly sleeved in the middle of the first gear plate 201, and a multi-sided slot 201a-1 is provided on the rotating sleeve 201a along the axial direction, and both ends of the rotating sleeve 201a are connected to two limit plates 103a through rolling bearings, so that the first gear plate 201 can rotate with the rotating sleeve 201a as the axis;

[0054] The rotating shaft 202b embedded in the output end of the motor 202 is slidably sleeved in the two polygonal slots 201a-1, and two polygonal sleeves 202b-1 for clearance matching with the polygonal slots 201a-1 are fixedly sleeved on the side wall of the rotating shaft 202b. This arrangement can realize the rotation of the rotating shaft 202b under the operation of the motor 202. Through the cooperation of the polygonal slots 201a-1 and the polygonal sleeves 202b-1, the rotation of the first gear plate 201 can be driven by the rotation of the rotating shaft 202b. The meshing of the first gear plate 201 and the gear ring 101a can realize the rotation of the variable resistance cylinder 101.

[0055] The outer side of the motor 202 is fixedly connected with a mounting plate 202a, and a guide column 203b parallel to the axis of the rotating shaft 202b is symmetrically slidably sleeved on the free end of the mounting plate 202a, one end of the two guide columns 203b is fixedly connected to the same positioning plate 203, and the other end of the guide column 203b is fixedly connected to the limiting plate 103a. The guide column 203b can play a limiting and guiding role in the movement of the mounting plate 202a, and a first spring 203c is slidably sleeved on the guide column 203b between the mounting plate 202a and the positioning plate 203. The setting of the first spring 203c can realize the reset of the motor 202, and an electromagnetic plate 203a is fixedly provided on the side of the positioning plate 203 between the two guide columns 203b. When one of the polygonal sleeves 202b-1 is clearance-matched with any one of the polygonal slots 201a-1, the other polygonal sleeve 202b-1 and the other polygonal slot 201a-1 are staggered.

[0056] When the above arrangement is in use, when the electromagnetic plate 203a is in the power-off state, a polygonal sleeve 202b-1 and a polygonal slot 201a-1 are clearance-matched, and under the operation of the motor 202, the rotation of one of the variable resistor cylinders 101 can be realized. When the electromagnetic plate 203a is in the power-on state, the electromagnetic plate 203a will magnetically adsorb the mounting plate 202a to drive the motor 202 to move along the axial direction of the guide column 203b, thereby realizing the clearance fit of the other polygonal sleeve 202b-1 and the other polygonal slot 201a-1, and under the operation of the motor 202, the rotation of the other variable resistor cylinder 101 is realized. This arrangement can adjust the two variable resistor cylinders 101 independently.

[0057] Furthermore, the number of sides of the polygonal slot 201a-1 and the polygonal sleeve 202b-1 are both n, so that after the variable resistor cylinder 101 is adjusted in a single manner, the polygonal slot 201a-1 and the polygonal sleeve 202b-1 can be accurately matched again. Example 3

[0058] Reference Figure 4 and Fig. 9 , which is the third embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed to prevent the other variable resistance cylinder 101 from rotating and causing the variable resistance to change when adjusting the single variable resistance cylinder 101.

[0059] Specifically, an outer sleeve 204a is fixedly sleeved on the L-shaped mounting shell 103 on the center side of the first gear plate 201, and a convex groove 204a-1 for clearance fit of the lock column 204 is opened on the outer sleeve 204a, and the end close to the first gear plate 201 is the open end of the convex groove 204a-1, and the axial cross-section of the lock column 204 is T-shaped;

[0060] A magnetic disk 204d is fixedly arranged on one end of the lock column 204 located inside the convex groove 204a-1, an electromagnetic column 204a-2 is fixedly arranged on the inner end surface of the convex groove 204a-1, and the electromagnetic column 204a-2 and the side surface close to the magnetic disk 204d are arranged in the same manner, and a second spring 204c is slidably sleeved on the lock column 204 located inside the convex groove 204a-1, and the arrangement of the second spring 204c can realize the automatic reset of the lock column 204;

[0061] When the above arrangement is in use, when the variable resistor cylinder 101 does not need to be adjusted, the electromagnetic column 204a-2 inside the outer sheath 204a on one side of the variable resistor cylinder 101 is energized, and under the effect of like charges repelling each other, one end of the locking column 204 will move outward from the inside of the outer sheath 204a, and one end of the locking column 204 will be engaged in the position of the first gear plate 201, thereby limiting the first gear plate 201 and preventing it from rotating.

[0062] Furthermore, one end of the locking column 204 located outside the convex groove 204a - 1 is configured as a flat head 204b . The configuration of the flat head 204b facilitates better cooperation with the first gear plate 201 to achieve position limiting of the first gear plate 201 . Example 4

[0063] Reference Figure 2 , Figure 5 , Fig.11 , Fig.12 and Fig.13 , which is the fourth embodiment of the present invention, is based on any of the above embodiments, except that this embodiment is proposed to solve the problem of overheating of the battery itself due to over-discharge, thereby posing a safety hazard.

[0064] Specifically, it also includes a power-off component 300 arranged on the outside of the vertical plate of the L-shaped mounting shell 103, the power-off component 300 includes an outer protective shell 301 with a U-shaped horizontal section, a mounting block 302 arranged inside the outer protective shell 301 and with an L-shaped vertical section, and a distribution column 303 arranged on the inner side of the corner of the mounting block 302, the mounting block 302 is fixedly connected to the vertical plate of the outer protective shell 301, and mounting strips 301a are symmetrically fixed on the two outer side walls of the opening end of the outer protective shell 301, and the mounting strips 301a are fixedly connected to the outer side wall of the L-shaped mounting shell 103, so as to realize a detachable connection between the power-off component 300 and the L-shaped mounting shell 103;

[0065] Two first mounting grooves 302c are parallelly provided on the side of the vertical part of the mounting block 302, and a second mounting groove 302d is provided on the side of the horizontal part of the mounting block 302 in alignment with the first mounting groove 302c. Two third mounting grooves 303b are provided on the side wall of the distribution column 303 in one-to-one correspondence with the first mounting groove 302c or / and the second mounting groove 302d; the second elastic metal plate 302a is inserted and fixedly provided in the first mounting groove 302c, the third elastic metal plate 302b is inserted and fixedly provided in the second mounting groove 302d, and the elastic metal ring 303c is inserted and fixedly provided in the third mounting groove 303b;

[0066] A second conductive column 302a-2 is fixedly disposed at the upper end of the second elastic metal plate 302a, and a first elastic protrusion 302a-1 is disposed at the lower end of the second elastic metal plate 302a. A second elastic protrusion 302b-1 is disposed at one end of the third elastic metal plate 302b close to the second elastic metal plate 302a, and a third conductive column 302b-2 is disposed at the other end of the third elastic metal plate 302b. Two second conductive protrusions 303c-1 are disposed at 90 degrees on the outer wall of the elastic metal ring 303c, respectively abutting against the first elastic protrusion 302a-1 and the second elastic protrusion 302b-1.

[0067] The free ends of the second conductive column 302a-2 and the third conductive column 302b-2 are both screwed with a second conductive bolt 302e, and the third conductive column 302b-2 passes through the vertical plate of the outer protective shell 301, so as to facilitate the connection with the electrical wire;

[0068] When the above arrangement is in use, the first elastic protrusion 302a-1 of the second elastic metal plate 302a and the second elastic protrusion 302b-1 of the third elastic metal plate 302b respectively abut against the two second conductive protrusions 303c-1 on the same elastic metal ring 303c, so that the second elastic metal plate 302a, the elastic metal ring 303c and the third elastic metal plate 302b can be electrically conductive, the two second conductive posts 302a-2 are respectively connected to the positive and negative poles of the battery pack, and the two third conductive posts 302b-2 are respectively connected to the input end of the electrical device, thereby realizing power supply to the electrical device.

[0069] Furthermore, a rotating column 303a is fixedly sleeved in the distribution column 303, and both ends of the rotating column 303a are rotatably connected to the outer casing 301 through rolling bearings. This arrangement can realize power on and off between the second elastic metal plate 302a and the third elastic metal plate 302b under the rotation of the distribution column 303;

[0070] The on and off of the distribution column 303 should be adapted to the temperature monitoring sensor in the BMS protection board. When the temperature monitoring sensor detects that the temperature is too high, the BMS protection board will control the distribution column 303 to rotate. Example 5

[0071] Reference Figure 5 , Fig. 9 , Fig.10 and Fig.13 , which is the fifth embodiment of the present invention, is based on the previous embodiment, but is different in that this embodiment is proposed in order to more conveniently and automatically control the distribution column 303, thereby improving convenience.

[0072] Specifically, a third gear plate 303a-1 is fixedly sleeved on the rotating column 303a at one end of the distribution column 303, and a second gear plate 202b-2 is fixedly sleeved on the rotating shaft 202b between the two polygonal sleeves 202b-1. The third gear plate 303a-1 and the second gear plate 202b-2 are respectively engaged with two teeth 205b on the bottom surface of the linkage bar 205, and the linkage bar 205 slides through the L-shaped mounting shell 103.

[0073] When the above arrangement is in use, the motor 202 can be used to rotate the rotating shaft 202b, thereby realizing the rotation of the second gear plate 202b-2. Then, under the linkage of the linkage bar 205, the third gear plate 303a-1 can drive the distribution column 303 to rotate, so as to realize the power on and off between the second elastic metal plate 302a and the third elastic metal plate 302b.

[0074] Furthermore, a positioning strip 205a is fixedly provided on the top surface of the linkage strip 205 along the long side direction, and a positioning groove 103c for gap fitting of the positioning strip 205a is provided on the L-shaped mounting shell 103. This arrangement can serve as a limit guide for the movement of the positioning strip 205a to prevent the positioning strip 205a from detaching.

[0075] In addition, it should be noted that the components not described in detail in this article are prior art.

[0076] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0077] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0078] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A BMS component suitable for an AGV power system, characterized in that: include, The varistor element (100) comprises two varistor cylinders (101) coaxially arranged in a horizontal direction, an insulating column (102) slidably sleeved in a through slot (101f) in the middle of the varistor cylinder (101), and an L-shaped mounting shell (103) arranged below the varistor cylinder (101), wherein n slots (101b) are arranged in a circumferential array at the end of the varistor cylinder (101), and connecting sleeves (101e) are fixedly sleeved at both ends of the slots (101b), and one end of the connecting sleeve (101e) located outside the varistor cylinder (101) is provided with a plurality of slots (101b) arranged in a circumferential array. An insulating head (101e-1) is fixedly provided, and a conductive head (101e-2) is embedded and fixedly provided in the insulating head (101e-1); a resistor column (101d) is placed in the slot (101b), and the two ends of the resistor column (101d) are respectively abutted against the end surfaces of the two conductive heads (101e-2); the resistance values ​​of the resistor columns (101d) in the n slots (101b) are arranged to increase or decrease in a clockwise direction; and first elastic metal plates (102b) are symmetrically fixedly provided at the two ends of the variable resistance cylinder (101). A first conductive column (102b-1) is fixedly disposed on one side of the upper end of the first elastic metal plate (102b), and a first conductive protrusion (102b-2) is fixedly disposed on one side of the lower end of the first elastic metal plate (102b). The first conductive protrusion (102b-2) is located on one side of the rotation track surface of the conductive head (101e-2) and abuts against an end surface of any conductive head (101e-2). The upper ends of the two first elastic metal plates (102b) located between the two variable resistance cylinders (101) share a first conductive column (102b-1). 02b-1), and one end of the first conductive column (102b-1) is screw-fitted with a first conductive bolt (102d), the first conductive column (102b-1) is fixedly connected to the side wall of the insulating column (102) through an insulating plate (102a), a conductive rod (102c) is fixedly sleeved in the insulating column (102), and both ends of the conductive rod (102c) are screw-fitted with the first conductive bolt (102d); a gear ring (101a) is fixedly sleeved on the outer side wall of the middle part of the variable resistor cylinder (101); and, An adjusting member (200) arranged on one side of the variable resistance member (100), comprising a first gear plate (201) meshing with the gear ring (101a), a motor (202) arranged on one side of the axis of the first gear plate (201), and a positioning plate (203) arranged on one side of the motor (202); A conductive rod (102c) and a first conductive column (102b-1) at one end of the variable resistor cylinder (101) are respectively connected to the positive and negative electrodes of the charging slot; a first conductive bolt (102d) located between the two variable resistor cylinders (101) is connected to an electrode column of the battery pack via an electrical conductor, and a monitoring module is also connected in series to the electrical conductor; another electrode column of the battery pack is connected to the first conductive bolt (102d) at one end of the conductive rod (102c) via an electrical conductor, and the first conductive bolt (102d) is also connected to the first conductive bolt (102d) on the first conductive column (102b-1) above it via an electrical conductor, thereby forming an electrical circuit; two variable resistor cylinders (101) are in the circuit, one variable resistor cylinder (101) is connected in series with the battery pack, and the other variable resistor cylinder (101) is connected in parallel with the battery pack; The monitoring module is electrically connected to the BMS protection board via a conductive line, and the BMS protection board is electrically connected to the motor (202) via a conductive line.

2. A BMS component suitable for an AGV power system as claimed in claim 1, characterized in that: An external thread (101e-4) is provided on the outer wall of the connecting sleeve (101e), while an internal thread (101b-1) spirally matched with the external thread (101e-4) is provided on the inner wall of the slot (101b), and disassembly holes (101e-3) are symmetrically provided on the end surface of the insulating head (101e-1).

3. A BMS component suitable for an AGV power system as claimed in claim 1, characterized in that: Limiting plates (103a) are symmetrically arranged on both sides of the gear ring (101a); one end of the limiting plate (103a) is fixedly connected to the side wall of the L-shaped mounting shell (103); and a limiting groove (103a-1) for slidingly sleeve-engaging the variable resistor cylinder (101) is provided on the other end of the L-shaped mounting shell (103); a limiting ring (101c) is fixedly sleeve-engaged on the outer side wall of the variable resistor cylinder (101) on the other side of the limiting plate (103a) away from the gear ring (101a); A plurality of mounting holes (103b) are provided on both plate surfaces of the L-shaped mounting shell (103).

4. A BMS component suitable for an AGV power system as claimed in claim 3, characterized in that: A rotating sleeve (201a) is fixedly sleeved in the middle of the first gear plate (201), and a multi-sided clamping groove (201a-1) is provided on the rotating sleeve (201a) along the axial direction, and two ends of the rotating sleeve (201a) are respectively connected to two limit plates (103a) via rolling bearing rotating sleeves (201a); A rotating shaft (202b) embedded in the output end of the motor (202) is slidably sleeved in two polygonal slots (201a-1), and two polygonal sleeves (202b-1) for clearance matching with the polygonal slots (201a-1) are fixedly sleeved on the side wall of the rotating shaft (202b); when one of the polygonal sleeves (202b-1) is clearance matched with any one of the polygonal slots (201a-1), the other polygonal sleeve (202b-1) and the other polygonal slot (201a-1) are staggered; The outer side of the motor (202) is fixedly connected to a mounting plate (202a), and a guide column (203b) parallel to the axis of the rotating shaft (202b) is symmetrically slidably sleeved on the free end of the mounting plate (202a), one end of the two guide columns (203b) is fixedly connected to the same positioning plate (203), and the other end of the guide column (203b) is fixedly connected to the limit plate (103a), a first spring (203c) is slidably sleeved on the guide column (203b) between the mounting plate (202a) and the positioning plate (203), and an electromagnetic plate (203a) is fixedly provided on the side of the positioning plate (203) between the two guide columns (203b).

5. A BMS component suitable for an AGV power system as claimed in claim 4, characterized in that: The number of sides of the multilateral slot (201a-1) and the multilateral sleeve (202b-1) are both n.

6. A BMS component suitable for an AGV power system as claimed in claim 4, characterized in that: An outer sleeve (204a) is fixedly sleeved on the L-shaped mounting shell (103) on one side of the center of the first gear plate (201), and a convex groove (204a-1) for clearance fit of the lock column (204) is provided on the outer sleeve (204a), and the end close to the first gear plate (201) is the open end of the convex groove (204a-1), and the axial cross section of the lock column (204) is T-shaped; A magnetic disk (204d) is fixedly disposed on one end of a lock column (204) located inside the convex groove (204a-1); an electromagnetic column (204a-2) is fixedly disposed on the inner end surface of the convex groove (204a-1); and the electromagnetic column (204a-2) and the magnetic disk (204d) are arranged in the same manner on a side surface close to each other; and a second spring (204c) is slidably sleeved on the lock column (204) located inside the convex groove (204a-1); One end of the locking column (204) located outside the convex groove (204a-1) is configured as a flat head (204b).

7. A BMS component suitable for an AGV power system as claimed in claim 4, 5 or 6, characterized in that: It also includes a power disconnecting member (300) arranged on the outside of the vertical plate of the L-shaped installation shell (103), the power disconnecting member (300) comprising an outer protective shell (301) with a U-shaped horizontal cross section, a mounting block (302) arranged inside the outer protective shell (301) and with an L-shaped vertical cross section, and a distribution column (303) arranged on the inside of the corner of the mounting block (302); Two first mounting grooves (302c) are provided in parallel on the side surface of the vertical portion of the mounting block (302), and a second mounting groove (302d) is provided on the side surface of the horizontal portion of the mounting block (302) in alignment with the end of the first mounting groove (302c), and two third mounting grooves (303b) are provided on the side wall of the distribution column (303) in a one-to-one correspondence with the first mounting groove (302c) or / and the second mounting groove (302d); a second elastic metal plate (302a) is inserted and fixedly provided in the first mounting groove (302c), a third elastic metal plate (302b) is inserted and fixedly provided in the second mounting groove (302d), and an elastic metal ring (303c) is inserted and fixedly provided in the third mounting groove (303b); A second conductive column (302a-2) is fixedly provided at the upper end of the second elastic metal plate (302a), and a first elastic protrusion (302a-1) is provided at the lower end of the second elastic metal plate (302a); a second elastic protrusion (302b-1) is provided at one end of the third elastic metal plate (302b) close to the second elastic metal plate (302a), and a third conductive column (302b-2) is provided at the other end of the third elastic metal plate (302b); and two second conductive protrusions (303c-1) are provided at an angle of 90 degrees on the outer side wall of the elastic metal ring (303c), respectively abutting against the first elastic protrusion (302a-1) and the second elastic protrusion (302b-1); A rotating column (303a) is fixedly sleeved in the distribution column (303), and both ends of the rotating column (303a) are rotatably connected to the outer protective shell (301) via rolling bearings; The free ends of the second conductive column (302a-2) and the third conductive column (302b-2) are both screw-fitted with a second conductive bolt (302e), and the third conductive column (302b-2) penetrates the vertical plate of the outer protective shell (301).

8. A BMS component suitable for an AGV power system as claimed in claim 7, characterized in that: The mounting block (302) is fixedly connected to the vertical plate of the outer protective shell (301), and mounting strips (301a) are symmetrically fixedly provided on two outer side walls of the open end of the outer protective shell (301), and the mounting strips (301a) are fixedly connected to the outer side walls of the L-shaped mounting shell (103).

9. A BMS component suitable for an AGV power system as claimed in claim 7, characterized in that: A third gear plate (303a-1) is fixedly sleeved on a rotating column (303a) at one end of the distribution column (303); a second gear plate (202b-2) is fixedly sleeved on a rotating shaft (202b) between the two polygonal sleeves (202b-1); the third gear plate (303a-1) and the second gear plate (202b-2) are respectively meshed with two teeth (205b) on the bottom surface of a linkage bar (205); and the linkage bar (205) slides through an L-shaped mounting shell (103); A positioning strip (205a) is fixedly provided on the top surface of the linkage strip (205) along the long side direction, and a positioning groove (103c) for clearance fit of the positioning strip (205a) is provided on the L-shaped installation shell (103).

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