Excavator storage battery monitoring device

Abstract

The invention belongs to the technical field of storage battery monitoring equipment, and particularly relates to an excavator storage battery monitoring device which comprises a storage battery body and a hollow shell used for installing the storage battery body, and the inner wall of the hollow shell is fixedly connected with a hollow supporting plate. The excavator storage battery monitoring device has the capability of monitoring the internal resistance in real time, can timely find the irreversible increase of the internal resistance of the storage battery, can timely remind the maintenance of the storage battery, has the functions of shock absorption protection of the storage battery and automatic adjustment of the temperature of the working environment, and is suitable for popularization and application. The internal resistance of the storage battery can be prevented from being irreversibly damaged, the storage battery can continuously work in the optimal temperature range, the situation that the internal resistance is seriously changed due to abnormal temperature change is avoided, the stability of connection between the wire harness and the conductive column of the storage battery can be effectively improved through the wire harness stabilizing mechanism, and the service life of the storage battery is prolonged. And the use reliability and the service life of the storage battery are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of battery monitoring equipment, and in particular relates to a battery monitoring device for an excavator. Background Art

[0002] The excavator battery is a key component of the excavator's electrical system. It is mainly a rechargeable DC power supply, generally a lead-acid battery. From the appearance, it is similar to a rectangular box with two positive and negative terminals. It plays an important role. When the excavator is started, it provides a strong current to the starting motor so that the engine can start smoothly. During the operation of the excavator, it provides stable power support for various electrical equipment on the vehicle such as lighting systems, control instruments, radios, etc., and when the engine is working, the generator will charge the battery so that it can continue to play a role in the operation of the excavator. In addition, during the use of the excavator battery, it can also be monitored by a monitoring device. For example, the authorization announcement number CN212905326U discloses an excavator battery monitoring device and an excavator.

[0003] In the actual operation of the excavator, the excavator battery will be continuously disturbed by vibration. When the vibration is too severe, the active substances on the plates will fall off. These fallen active substances will form a local short-circuit channel inside the battery, which will continuously consume the battery power, increase the self-discharge rate, and accelerate the aging process such as plate sulfidation. At the same time, the fallen substances may also block the gap between the plates, hinder the normal diffusion of ions, and irreversibly increase the internal resistance of the battery. If these abnormal conditions of the battery are not discovered and maintained in time, the excavator battery will have reduced charging efficiency, capacity attenuation, and poor discharge performance, which will affect the reliability and service life of the excavator. In addition, the temperature environment in which the excavator battery works also has a great impact on its internal resistance. When the temperature drops, the viscosity of the battery electrolyte increases, the ion diffusion rate slows down, and the internal resistance increases. When the temperature rises, the electrolyte viscosity decreases, the ion movement rate speeds up, and the internal resistance decreases. If these internal resistance changes are not corrected in time, they will also lead to reduced charging efficiency, capacity attenuation, and poor discharge performance of the battery, further affecting the reliability and life of the excavator, and even affecting the normal excavation operation of the excavator.

[0004] To this end, we propose an excavator battery monitoring device to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an excavator battery monitoring device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an excavator battery monitoring device, comprising a battery body and a hollow shell for mounting the battery body, the inner wall of the hollow shell is fixedly connected with a hollow support plate, the upper surface of the hollow support plate is fixedly connected with the lower surface of the battery body, the two conductive columns of the battery body both penetrate the top of the hollow shell, an air guide ring is arranged outside the two conductive columns of the battery body, the bottom end of the air guide ring is fixedly connected with the upper surface of the hollow shell, a plurality of exhaust holes are opened on the upper surface of the hollow shell located inside the air guide ring, and an alarm and a harness stabilizing mechanism are fixedly connected to the upper surface of the hollow shell; The inner wall of the hollow shell is fixedly connected with an electronic ohmmeter and a PLC controller, two detection wires of the electronic ohmmeter are respectively fixedly connected with the outer walls of the bottom ends of the two conductive columns of the battery body, and the upper surface of the hollow support plate is fixedly connected with an air intake mechanism; The bottom ends of both sides of the hollow shell are provided with mounting holes, and the hole walls of the mounting holes are fixedly connected with buffer protection mechanisms; The lower surface of the hollow support plate and the inner wall of the bottom end of the hollow shell are fixedly connected with an outer frame and an inner frame, and the lower surface of the hollow shell located between the outer frame and the inner frame is fixedly embedded with a cooling mechanism; The inner wall of the bottom end of the hollow shell is fixedly connected with an air supply mechanism.

[0007] In the above-mentioned excavator battery monitoring device, the wiring harness stabilization mechanism includes a connecting strip fixedly connected to the upper surface of the hollow outer shell, the outer wall of the connecting strip is provided with a rectangular threading hole, the top hole wall of the rectangular threading hole is provided with a threaded through hole, and the hole wall of the threaded through hole is threadedly connected with a positioning bolt, the inside of the rectangular threading hole is provided with a pressure strip, and the outside of the pressure strip is provided with a plurality of baffle rods, and the side ends of the baffle rods are fixedly connected to the hole wall of the rectangular threading hole.

[0008] In the above-mentioned excavator battery monitoring device, the air intake mechanism includes a first normally open solenoid valve and a second normally open solenoid valve fixedly connected to the top of a hollow support plate, the air intake ends of the first normally open solenoid valve and the second normally open solenoid valve are fixedly connected with a bent pipe, the air intake end of the bent pipe is fixedly connected with a filter cartridge, the side end of the filter cartridge is threadedly sealed with a sealing cover, the interior of the filter cartridge is provided with an activated carbon adsorption block and a filter sponge block, the outer wall of the sealing cover is fixedly connected with an air intake pipe, the air intake ends of the two air intake pipes are respectively sealed and sleeved with a first air intake duct and a second air intake duct, and an air outlet is provided on the lower surface of the hollow support plate.

[0009] In the above-mentioned excavator battery monitoring device, the buffer protection mechanism includes a plurality of annular buffer airbags, the inner wall of the annular buffer airbags is fixedly connected with an air cylinder, the top outer wall of the air cylinder is fixedly sleeved with an extension ring, the outer wall of the extension ring is movably sleeved with a limiting sleeve, the outer wall of the limiting sleeve is fixedly embedded and connected with the inner wall of the hollow outer shell, the bottom end of the air cylinder is movably connected with a support tube, the top end of the support tube is fixedly sleeved with a convex ring and a sealing ring, the side wall of the sealing ring is sealingly and movably connected to the inner wall of the air cylinder, the tube wall of the support tube is sleeved with a spring, the two ends of the spring are respectively fixedly connected to the lower surface of the convex ring and the inner wall of the hollow outer shell, and the outer wall in the middle of the air cylinder is provided with a plurality of exhaust guide holes.

[0010] In the above-mentioned excavator battery monitoring device, the cooling mechanism includes two semiconductor refrigeration plates fixedly embedded in the bottom end of the hollow outer shell, the outer walls of the cooling sides of the two semiconductor refrigeration plates are commonly fixedly connected to an annular metal heat-conducting frame, the lower surface of the hollow support plate located at the top of the annular metal heat-conducting frame is fixedly connected to an air duct, and the air duct passes through the upper surface of the hollow support plate, and a temperature sensor is provided at the top of one of the air ducts, and a U-shaped frame is fixedly sleeved on the outer wall of the temperature sensor, and the bottom end of the U-shaped frame is fixedly connected to the upper surface of the hollow support plate, the heat-generating side of the semiconductor refrigeration plate is fixedly connected to a heat sink, and a plurality of air inlet circular holes are provided on the outer wall of the bottom end of the outer frame.

[0011] In the above-mentioned excavator battery monitoring device, the air supply mechanism includes a miniature one-way air pump fixedly connected to the inner wall of the bottom end of the hollow outer shell, the air outlet end of the miniature one-way air pump passes through the lower surface of the hollow outer shell and is fixedly connected to a hose, the bottom end of the hose is fixedly connected to a hollow fixed disk, the bottom ends of the plurality of support tubes are fixedly connected to the top end of the hollow fixed disk, and the air inlet end of the support tube is connected to the internal cavity of the hollow fixed disk.

[0012] In the above-mentioned excavator battery monitoring device, two symmetrically distributed rubber pads are fixedly connected to the upper surface of the hollow fixed plate, and fixed through holes are opened at the four corners of the upper surface of the hollow fixed plate. A protective soft cover is fixedly sleeved on the outer wall of the bottom end of the hollow outer shell, and the bottom end of the protective soft cover is fixedly connected to the upper surface of the hollow fixed plate.

[0013] In the above-mentioned excavator battery monitoring device, the outer wall of the positioning bolt is sleeved with a damping sleeve, the lower surface of the damping sleeve is fixedly connected to the upper surface of the connecting strip, and the lower surface of the pressure strip is fixedly connected to a rubber strip.

[0014] Compared with the existing technology, the advantages of an excavator battery monitoring device are: Through the buffer protection mechanism, air intake mechanism and air supply mechanism, when the excavator battery monitoring device is used, the air supply mechanism is first controlled to start by the PLC controller, and the air supply mechanism draws air through the air intake mechanism and injects it into the buffer protection mechanism. As the air in the cylinder increases, the air will push the cylinder up, and at the same time, enough air is filled at the top of the cylinder, and the bottom of the cylinder will squeeze the return spring to compress and generate elastic force. Then, when the battery body is subjected to vertical and lateral vibrations, the buffer protection mechanism can effectively buffer the battery body to prevent the battery body from being disturbed by severe vibrations, and at the same time, prevent the active substances on the plates inside the battery body from falling off, thereby avoiding the problem of irreversible increase in internal resistance of the battery body. This mechanism enables the excavator battery monitoring device to have the function of battery shock absorption protection, avoids irreversible damage to the battery internal resistance as much as possible, and can improve the reliability and life of the battery.

[0015] Through the electronic ohmmeter, alarm and cooling mechanism, the internal resistance of the battery body is detected in real time by the electronic ohmmeter, and the electronic ohmmeter will convert the detected internal resistance value into an electrical signal and transmit it to the PLC controller. If the internal resistance value of the battery body detected by the electronic ohmmeter exceeds the standard internal resistance range threshold of the battery preset by the PLC controller, it means that the battery body may be in a low temperature environment. The PLC controller controls the air intake mechanism to draw high-temperature air from the excavator engine, and uses the high-temperature air to increase the temperature around the battery body. After 5 minutes of injecting high-temperature air, the electronic ohmmeter feedback shows that the internal resistance of the battery body is still too high, which means that the internal resistance of the battery body has increased to an irreversible state, and the alarm is used to remind the staff to maintain it in time. Otherwise, it means that the battery body is in a In a low-temperature environment, the internal resistance is corrected by delivering high-temperature air. If the electronic ohmmeter detects that the internal resistance of the battery body is lower than the standard internal resistance range threshold of the battery preset by the PLC controller, it means that the battery body may be in a high-temperature environment. At this time, the PLC controller controls the air intake mechanism to draw low-temperature air from the excavator cab to cool the battery body, and accelerates the cooling effect through the assistance of the cooling mechanism to ensure that the battery body can be used continuously and reliably. This mechanism enables the excavator battery monitoring device to have the ability to monitor the internal resistance in real time, and can promptly detect the situation where the internal resistance of the battery has irreversibly increased, and can promptly remind the battery maintenance. In addition, the device also has the function of automatically adjusting the working environment temperature of the battery, which effectively improves the reliability and life of the battery.

[0016] Through the set harness stabilization mechanism, when the two conductive posts of the battery body are connected to the harness, the harness is passed through the rectangular threading hole and placed on the lower side of the rubber strip, and then the positioning bolt is rotated, the bottom end of the positioning bolt pushes the pressure strip downward, and the pressure strip pushes the rubber strip to squeeze the harness, thereby achieving a stable connection between the side end of the harness and the conductive post of the battery body, and is not affected by the fluctuations generated by the operation of the buffer protection mechanism, thereby ensuring the firmness of the connection between the harness and the conductive post of the battery body. This mechanism enables the excavator battery monitoring device to effectively improve the stability of the connection between the harness and the battery conductive post, and ensure the reliability of the battery operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an excavator battery monitoring device provided by the present invention; Figure 2 It is a structural schematic diagram of a partial cross-section of an excavator battery monitoring device provided by the present invention; Figure 3 It is a structural schematic diagram of a wire harness stabilization mechanism in an excavator battery monitoring device provided by the present invention; Figure 4 It is a structural schematic diagram of an air guide ring part in an excavator battery monitoring device provided by the present invention; Figure 5 It is a structural schematic diagram of an air intake mechanism in an excavator battery monitoring device provided by the present invention; Figure 6 It is a structural schematic diagram of a buffer protection mechanism in an excavator battery monitoring device provided by the present invention; Figure 7 It is a structural schematic diagram of a cooling mechanism in a battery monitoring device for an excavator provided by the present invention; Figure 8 The present invention is a schematic structural diagram of a hollow fixed disk portion of an excavator battery monitoring device.

[0018] In the figure: 1 battery body, 2 hollow shell, 3 hollow support plate, 4 air guide ring, 5 harness stabilizing mechanism, 51 connecting strip, 52 rectangular threading hole, 53 positioning bolt, 54 pressure strip, 55 stop rod, 6 air intake mechanism, 61 first normally open solenoid valve, 62 second normally open solenoid valve, 63 elbow, 64 filter cartridge, 65 sealing cover, 66 activated carbon adsorption block, 67 filter sponge block, 68 air intake pipe, 69 first air intake duct, 610 second air intake duct, 611 air outlet, 7 buffer protection mechanism, 71 annular buffer airbag, 72 air cylinder, 73 extension ring, 74 limit Position sleeve, 75 support tube, 76 convex ring, 77 sealing ring, 78 spring, 79 exhaust guide hole, 8 cooling mechanism, 81 semiconductor refrigeration plate, 82 annular metal heat conducting frame, 83 air guide pipe, 84 temperature sensor, 85 U-shaped frame, 86 heat sink, 87 air inlet hole, 9 air supply mechanism, 91 micro one-way air pump, 92 hose, 93 hollow fixed plate, 10 exhaust hole, 11 alarm, 12 electronic ohmmeter, 13 PLC controller, 14 outer frame, 15 inner frame, 16 rubber strip, 17 rubber pad, 18 fixed through hole, 19 protective soft sleeve, 20 damping sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 8As shown, an excavator battery monitoring device includes a battery body 1 and a hollow shell 2 for installing the battery body 1, the inner wall of the hollow shell 2 is fixedly connected with a hollow support plate 3, the upper surface of the hollow support plate 3 is fixedly connected to the lower surface of the battery body 1, two conductive columns of the battery body 1 both pass through the top of the hollow shell 2, an air guide ring 4 is arranged outside the two conductive columns of the battery body 1, the bottom end of the air guide ring 4 is fixedly connected to the upper surface of the hollow shell 2, a plurality of exhaust holes 10 are opened on the upper surface of the hollow shell 2 located inside the air guide ring 4, an alarm 11 and a harness stabilizing mechanism 5 are fixedly connected to the upper surface of the hollow shell 2, the harness stabilizing mechanism 5 includes a connecting strip 51 fixedly connected to the upper surface of the hollow shell 2, and the connecting strip 51 The outer wall of the rectangular threading hole 52 is provided with a rectangular threading hole 52, the top hole wall of the rectangular threading hole 52 is provided with a threaded through hole, and the hole wall of the threaded through hole is threadedly connected with a positioning bolt 53, the interior of the rectangular threading hole 52 is provided with a pressure strip 54, the outer side of the pressure strip 54 is provided with a plurality of blocking rods 55, the side ends of the blocking rods 55 are fixedly connected to the hole wall of the rectangular threading hole 52, the outer wall of the positioning bolt 53 is sleeved with a damping sleeve 20, the lower surface of the damping sleeve 20 is fixedly connected to the upper surface of the connecting strip 51, the lower surface of the pressure strip 54 is fixedly connected to a rubber strip 16, the friction resistance of the damping sleeve 20 can ensure the stability of the state of the positioning bolt 53 after rotation, and the mechanism enables the battery monitoring device to effectively improve the stability of the connection between the wiring harness and the battery conductive column, and ensure the reliability of the battery operation.

[0021] An electronic ohmmeter 12 and a PLC controller 13 are fixedly connected to the inner wall of the hollow shell 2. Two detection wires of the electronic ohmmeter 12 are fixedly connected to the outer walls of the bottom ends of the two conductive columns of the battery body 1 respectively. An air intake mechanism 6 is fixedly connected to the upper surface of the hollow support plate 3. The air intake mechanism 6 includes a first normally open solenoid valve 61 and a second normally open solenoid valve 62 fixedly connected to the top of the hollow support plate 3. The air intake ends of the first normally open solenoid valve 61 and the second normally open solenoid valve 62 are fixedly connected to a bend pipe 63. The air intake end of the bend pipe 63 is fixedly connected to a filter cartridge 64. The side end of the filter cartridge 64 is threadedly sealed with a sealing cover 65. An activated carbon adsorption block 66 and a filter sponge block 67 are arranged inside the filter cartridge 64. The outer wall of the sealing cover 65 is fixedly connected to an air intake pipe 68. The air intake ends of the two air intake pipes 68 are respectively sealed with a first air intake duct 69 and a second air intake duct 610. An air outlet hole 611 is opened on the lower surface of the hollow support plate 3.

[0022] The bottom ends of both sides of the hollow shell 2 are provided with mounting holes, and the hole walls of the mounting holes are fixedly connected with a buffer protection mechanism 7, the buffer protection mechanism 7 includes a plurality of annular buffer airbags 71, the inner wall of the annular buffer airbag 71 is fixedly connected with a cylinder 72, the top outer wall of the cylinder 72 is fixedly sleeved with an extension ring 73, the outer wall of the extension ring 73 is movably sleeved with a limiting sleeve 74, the outer wall of the limiting sleeve 74 is fixedly embedded and connected with the inner wall of the hollow shell 2, the bottom end of the cylinder 72 is movably connected with a support tube 75, the top of the support tube 75 is fixedly sleeved with a support tube 75, and the top of the support tube 75 is fixedly sleeved with a support tube 75. A convex ring 76 and a sealing ring 77 are sleeved, and the side wall of the sealing ring 77 is sealed and movably connected to the inner wall of the air cylinder 72. A spring 78 is sleeved on the wall of the support tube 75, and the two ends of the spring 78 are respectively fixedly connected to the lower surface of the convex ring 76 and the inner wall of the hollow shell 2. A plurality of exhaust guide holes 79 are opened on the outer wall in the middle of the air cylinder 72. This mechanism enables the excavator battery monitoring device to have the function of battery shock absorption protection, avoids the irreversible damage of the battery internal resistance as much as possible, and can improve the reliability and life of the battery.

[0023] The lower surface of the hollow support plate 3 and the inner wall of the bottom end of the hollow shell 2 are fixedly connected with an outer frame 14 and an inner frame 15. The lower surface of the hollow shell 2 located between the outer frame 14 and the inner frame 15 is fixedly embedded with a cooling mechanism 8. The cooling mechanism 8 includes two semiconductor refrigeration plates 81 fixedly embedded with the bottom end of the hollow shell 2. The outer walls of the cooling sides of the two semiconductor refrigeration plates 81 are commonly fixedly connected with an annular metal heat-conducting frame 82. The lower surface of the hollow support plate 3 located at the top of the annular metal heat-conducting frame 82 is fixedly connected with an air guide pipe 83. The air guide pipe 83 passes through the upper surface of the hollow support plate 3. A temperature sensor 84 is provided at the top of one of the air guide pipes 83. A U-shaped frame 85 is fixedly sleeved on the outer wall of the temperature sensor 84. The bottom end of the U-shaped frame 85 is fixedly connected to the upper surface of the hollow support plate 3. The heat-generating side of the semiconductor refrigeration plate 81 is fixedly connected with a heat sink 86. The outer wall of the bottom end of the outer frame 14 is provided with a plurality of air inlet circular holes 87.

[0024] An air supply mechanism 9 is fixedly connected to the inner wall of the bottom end of the hollow shell 2, and the air supply mechanism 9 includes a micro one-way air pump 91 fixedly connected to the inner wall of the bottom end of the hollow shell 2, the air outlet end of the micro one-way air pump 91 passes through the lower surface of the hollow shell 2 and is fixedly connected to a hose 92, the bottom end of the hose 92 is fixedly connected to a hollow fixed disk 93, the bottom ends of multiple support tubes 75 are fixedly connected to the top of the hollow fixed disk 93, and the air inlet end of the support tube 75 is connected to the internal cavity of the hollow fixed disk 93, the upper surface of the hollow fixed disk 93 is fixedly connected to two symmetrically distributed rubber pads 17, and fixed through holes 18 are opened at the four corners of the upper surface of the hollow fixed disk 93, and the outer wall of the bottom end of the hollow shell 2 is fixedly sleeved with a protective soft cover 19, the bottom end of the protective soft cover 19 is fixedly connected to the upper surface of the hollow fixed disk 93, and the protective soft cover 19 can protect the hose 92, and the mechanism can automatically draw air into the interior of the buffer protection mechanism 7 to ensure the normal use of the buffer protection mechanism 7.

[0025] The first normally open solenoid valve 61, the second normally open solenoid valve 62, the semiconductor refrigeration plate 81, the micro one-way air pump 91 and the alarm 11 are all electrically connected to the output end of the PLC controller 13 through wires, and the electronic ohmmeter 12 and the temperature sensor 84 are all electrically connected to the input end of the PLC controller 13 through wires, wherein the model of the electronic ohmmeter 12 is a ZXHD / SOX-3 digital ohmmeter, and the electronic ohmmeter 12 converts the measured resistance value signal into an electrical signal through its output interface, and then connects it to the input end of the PLC controller 13. The above-mentioned power-on devices and electrical connections are all existing technologies and will not be repeated here.

[0026] The operating principle of the present invention is now described as follows: When the excavator battery monitoring device is disturbed by the working vibration of the excavator during use, the air inlet of the first air inlet duct 69 is first arranged in the cab of the excavator, and the air inlet of the second air inlet duct 610 is arranged at the engine of the excavator. During the discharge process of the battery body 1, the PLC controller 13 controls the micro one-way air pump 91 to start. At this time, the power of the micro one-way air pump 91 to suck air is 70% of the maximum rated power. Running the micro one-way air pump 91 at this power can not only ensure normal use, but also reduce energy consumption and achieve the most economical operating state. At this time, the micro one-way air pump 91 sucks air through the air intake mechanism 6, the hollow support plate 3 and the air outlet 611. The air will pass through the activated carbon adsorption block 66 and the overpressure in the process of passing through the air intake mechanism 6. The filter sponge block 67 filters and purifies the clean air, and the clean air enters the hollow support plate 3. Then the micro one-way air pump 91 injects the clean air into the air cylinder 72 through the hose 92, the hollow fixed plate 93 and the support tube 75. As the air in the air cylinder 72 increases, the air will push the air cylinder 72 upward. During the rising process of the air cylinder 72, the air cylinder 72 drives the hollow outer shell 2 to rise through the extension ring 73 and the limit sleeve 74, and the bottom of the air cylinder 72 will also squeeze the return spring 78 to compress and generate elastic force, and then the convex ring 76 and the sealing ring 77 will be relatively displaced from the top of the air cylinder 72 until the sealing ring 77 moves to the lower side of the exhaust guide hole 79. After that, the air injected at the top of the air cylinder 72 is discharged from the exhaust guide hole 79. However, due to the small inner diameter of the exhaust guide hole 79, the air is discharged slowly, so that there is still sufficient air at the top of the air cylinder 72. At this time, if the excavator generates vertical vibrations during operation, the hollow shell 2 will move up and down. During the up and down movement of the hollow shell 2, the elastic force of the return spring 78 and the resistance generated by the air compression at the top of the air cylinder 72 will buffer the vertical vibrations, and these resistances can prevent the top of the air cylinder 72 from contacting the top of the sealing ring 77 and the bottom of the convex ring 76 from contacting the bottom of the air cylinder 72, thereby avoiding vibrations caused by collisions due to direct contact. If the excavator generates lateral vibrations during operation, the air cylinder 72 will buffer them through the deformation of the annular buffer airbag 71. When the annular airbag is deformed, it has a buffering effect due to the air obstruction inside the annular buffer airbag 71. In addition, the air cylinder 72 will drive the extension ring 73 to limit A relative displacement is generated in the sleeve 74, thereby realizing comprehensive shock absorption protection for the battery body 1, preventing the battery body 1 from being disturbed by severe vibration, and preventing the active material on the electrode plate inside the battery body 1 from falling off, and preventing the active material from forming a local short-circuit channel and blocking the gap between the electrode plates, thereby preventing the problem of irreversible increase of internal resistance inside the battery body 1, and preventing the battery body 1 from having reduced charging efficiency, capacity attenuation, and poor discharge performance. This mechanism enables the excavator battery monitoring device to have the function of battery shock absorption protection, and avoids irreversible damage to the battery internal resistance as much as possible, which can improve the reliability and life of the battery. When the two conductive posts of the battery body 1 are connected to the wiring harness, the wiring harness is passed through the rectangular threading hole 52 and placed on the lower side of the rubber strip 16, and then the positioning bolt 53 is rotated, and the bottom end of the positioning bolt 53 pushes the pressure strip 54 downward, and the pressure strip 54 pushes the rubber strip 16 to squeeze the wiring harness, so as to achieve a stable connection between the side end of the wiring harness and the conductive post of the battery body 1, and is not disturbed by the fluctuations generated by the operation of the buffer protection mechanism 7, so as to ensure the firmness of the connection between the wiring harness and the conductive post of the battery body 1. This mechanism enables the excavator battery monitoring device to effectively improve the stability of the connection between the wiring harness and the battery conductive post, and ensure the reliability of the battery operation; When the excavator battery monitoring device is used on the excavator, the internal resistance of the battery body 1 is also detected in real time by the electronic ohmmeter 12, and the electronic ohmmeter 12 also converts the detected internal resistance value into an electrical signal and transmits it to the PLC controller 13. If the internal resistance value of the battery body 1 detected by the electronic ohmmeter 12 exceeds the battery standard internal resistance range threshold preset by the PLC controller 13, it means that the battery body 1 may be in a low temperature environment. In a low temperature environment, the viscosity of the electrolyte of the battery body 1 increases, the ion diffusion rate slows down, and the internal resistance increases. At this time, the PLC controller 13 controls the first normally open solenoid valve 61 to be energized and closed, and the micro one-way air pump The high-temperature air at the excavator engine is sucked in through the second normally open solenoid valve 62 and the second intake duct 610. After being purified by the intake mechanism 6, the high-temperature air is injected into the air cylinder 72. Then, the high-temperature air is discharged into the top of the hollow shell 2 through the exhaust guide hole 79, the intake circular hole 87 and the intake pipe 68. The temperature around the battery body 1 can be increased. When the high-temperature air is discharged through the intake pipe 68, the temperature sensor 84 also detects the temperature of the air. The temperature sensor 84 sends the detected temperature value to the PLC controller 13 in the form of an electrical signal. If the temperature value of the high-temperature air detected by the temperature sensor 84 is lower than the battery preset by the PLC controller 13, the high-temperature air temperature sensor 84 will detect the temperature of the air. When the optimal working temperature range threshold of the battery is 25℃-30℃, the PLC controller 13 controls the suction power of the micro one-way air pump 91 to increase to the rated maximum power, and by increasing the power of the micro one-way air pump 91, more high-temperature air is sucked into the battery body 1 to meet the need for increasing the temperature around the battery body 1. By increasing the temperature of the working environment of the battery body 1, the viscosity of the electrolyte is reduced, so that the ion diffusion speed in the battery body 1 is accelerated, and the internal resistance is corrected. In this way, the high-temperature air is injected into the battery body 1 for 5 minutes. If the electronic ohmmeter 12 detects that the internal resistance value of the battery body 1 still exceeds PL within these 5 minutes, the high-temperature air is injected into the battery body 1 for 5 minutes. When the PLC controller 13 reaches the battery standard internal resistance range threshold preset by the controller C, it indicates that the internal resistance of the battery body 1 has increased to an irreversible state, such as the irreversible increase of the internal resistance caused by the shedding of the active material on the internal plate of the battery body 1. At this time, the PLC controller 13 controls the alarm 11 to immediately send out an audible and visual alarm, prompting the staff to immediately shut down the excavator, and notify professional maintenance personnel to maintain the battery body 1 in time to avoid the battery body 1 with irreversible internal resistance continuing to work and causing the charging efficiency to decrease, the capacity to decay, and the discharge performance to deteriorate. On the contrary, if it is in a low temperature environment, the temperature around the battery body 1 can be increased to correct the internal resistance; If the electronic ohmmeter 12 detects that the internal resistance value of the battery body 1 is lower than the standard internal resistance range threshold of the battery preset by the PLC controller 13, it means that the battery body 1 may be in a high temperature environment. In the high temperature environment, the viscosity of the electrolyte in the battery body 1 decreases, and the ion diffusion rate is accelerated, causing the internal resistance of the battery body 1 to be excessively reduced. In this case, even if there is no external load, some spontaneous chemical reactions are more likely to occur between the positive and negative electrodes inside the battery body 1, resulting in aggravated self-discharge. Moreover, this reduction in internal resistance will also make the terminal voltage of the battery body 1 rise faster during the charging process. Specifically, the terminal voltage of the battery body 1 may reach or exceed the cut-off voltage in the charging state too quickly during the charging process. The battery body 1 is overcharged, which can cause the active materials on the plates of the battery body 1 to be over-oxidized, generate a large amount of gas, and cause the battery body 1 to bulge. In severe cases, it may even cause a safety accident in which the battery body 1 explodes. At this time, the PLC controller 13 controls the second normally open solenoid valve 62 to be energized and closed, and the micro one-way air pump 91 draws the air inside the excavator cab through the first normally open solenoid valve 61 and the first air intake duct 69. Due to the high temperature environment outside, the staff will turn on the air conditioner in the cab for their own comfort, and form low-temperature air in the cab. Then, the low-temperature air in the excavator cab is injected into the activated carbon adsorption block 66 and the filter sponge block 67 for purification through the first air intake duct 69, and the purified low-temperature air is then discharged through the exhaust The air conduction hole 79, the air inlet hole 87 and the air inlet pipe 68 are discharged into the top of the hollow shell 2, and the temperature around the battery body 1 can be reduced. When the low-temperature air is discharged through the air inlet pipe 68, the temperature sensor 84 will also detect the temperature value of the low-temperature air. If the temperature value of the low-temperature air detected by the temperature sensor 84 exceeds the threshold value of the optimal operating temperature range of the battery preset by the PLC controller 13 of 25°C-30°C, the PLC controller 13 will start the semiconductor refrigeration sheet 81, and the semiconductor refrigeration sheet 81 can reduce the surface temperature of the annular metal heat-conducting frame 82. The low-temperature air can further reduce the temperature after passing through the low-temperature annular metal heat-conducting frame 82. At the same time, the PLC controller 13 also controls the micro one-way air pump 91 to increase the suction power to the rated maximum power. rate, by increasing the power of the micro one-way air pump 91 to draw more low-temperature air to the battery body 1, and meet the need to reduce the temperature around the battery body 1, by reducing the temperature of the working environment of the battery body 1 to increase the viscosity of the electrolyte, so that the ion diffusion rate in the battery body 1 is reduced, the internal resistance is corrected, and the internal resistance of the battery body 1 is always maintained within the standard internal resistance range. In this way, the working environment of the battery body 1 reaches the optimal working temperature range, ensuring that the battery body 1 can be used continuously and reliably. This mechanism enables the excavator battery monitoring device to have the ability to monitor the internal resistance in real time, and can promptly detect the irreversible increase of the internal resistance of the battery, and can promptly remind the battery maintenance. In addition,The device also has the function of automatically adjusting the working environment temperature of the battery, so that the battery can continue to work in the optimal temperature range, avoiding the situation where the internal resistance changes badly due to abnormal temperature changes, and effectively improving the reliability and life of the battery.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An excavator battery monitoring device, comprising a battery body (1) and a hollow housing (2) for mounting the battery body (1), characterized in that: A hollow support plate (3) is fixedly connected to the inner wall of the hollow shell (2), the upper surface of the hollow support plate (3) is fixedly connected to the lower surface of the battery body (1), the two conductive columns of the battery body (1) both penetrate the top of the hollow shell (2), an air guide ring (4) is provided outside the two conductive columns of the battery body (1), the bottom end of the air guide ring (4) is fixedly connected to the upper surface of the hollow shell (2), a plurality of exhaust holes (10) are provided on the upper surface of the hollow shell (2) located inside the air guide ring (4), and an alarm (11) and a wiring harness stabilization mechanism (5) are fixedly connected to the upper surface of the hollow shell (2); An electronic ohmmeter (12) and a PLC controller (13) are fixedly connected to the inner wall of the hollow housing (2); two detection wires of the electronic ohmmeter (12) are respectively fixedly connected to the outer walls of the bottom ends of two conductive columns of the battery body (1); and an air intake mechanism (6) is fixedly connected to the upper surface of the hollow support plate (3); The bottom ends of both sides of the hollow housing (2) are provided with mounting holes, and the hole walls of the mounting holes are fixedly connected with buffer protection mechanisms (7); An outer frame (14) and an inner frame (15) are fixedly connected between the lower surface of the hollow support plate (3) and the inner wall of the bottom end of the hollow outer shell (2); a cooling mechanism (8) is fixedly embedded in the lower surface of the hollow outer shell (2) located between the outer frame (14) and the inner frame (15); An air supply mechanism (9) is fixedly connected to the inner wall of the bottom end of the hollow outer shell (2).

2. The excavator battery monitoring device according to claim 1, characterized in that: The wiring harness stabilizing mechanism (5) comprises a connecting strip (51) fixedly connected to the upper surface of the hollow housing (2); a rectangular threading hole (52) is provided on the outer wall of the connecting strip (51); a threaded through hole is provided on the top hole wall of the rectangular threading hole (52); a positioning bolt (53) is threadedly connected to the hole wall of the threaded through hole; a pressure strip (54) is provided inside the rectangular threading hole (52); a plurality of retaining rods (55) are provided on the outer side of the pressure strip (54); and the side ends of the retaining rods (55) are fixedly connected to the hole wall of the rectangular threading hole (52).

3. The excavator battery monitoring device according to claim 1, characterized in that: The air intake mechanism (6) comprises a first normally open solenoid valve (61) and a second normally open solenoid valve (62) which are fixedly connected to the top end of the hollow support plate (3); the air intake ends of the first normally open solenoid valve (61) and the second normally open solenoid valve (62) are fixedly connected to a bent pipe (63); the air intake ends of the bent pipe (63) are fixedly connected to a filter cartridge (64); the side end of the filter cartridge (64) is threadedly and sealedly connected to a sealing cap (65); an activated carbon adsorption block (66) and a filter sponge block (67) are provided inside the filter cartridge (64); the outer wall of the sealing cap (65) is fixedly connected to an air intake pipe (68); the air intake ends of the two air intake pipes (68) are respectively sealedly sleeved with a first air intake conduit (69) and a second air intake conduit (610); and an air outlet hole (611) is provided on the lower surface of the hollow support plate (3).

4. The excavator battery monitoring device according to claim 1, characterized in that: The buffer protection mechanism (7) comprises a plurality of annular buffer airbags (71), the inner wall of the annular buffer airbags (71) being fixedly connected to an air cylinder (72), the top outer wall of the air cylinder (72) being fixedly sleeved with an extension ring (73), the outer wall of the extension ring (73) being movably sleeved with a limiting sleeve (74), the outer wall of the limiting sleeve (74) being fixedly embedded and connected to the inner wall of the hollow outer shell (2), the bottom end of the air cylinder (72) being movably connected to a support tube (75), the top end of the support tube (75) being fixedly sleeved with a convex ring (76) and a sealing ring (77), the side wall of the sealing ring (77) being sealingly movably connected to the inner wall of the air cylinder (72), the tube wall of the support tube (75) being sleeved with a spring (78), the two ends of the spring (78) being fixedly connected to the lower surface of the convex ring (76) and the inner wall of the hollow outer shell (2) respectively, and the outer wall of the air cylinder (72) in the middle is provided with a plurality of exhaust guide holes (79).

5. The excavator battery monitoring device according to claim 4, characterized in that: The cooling mechanism (8) comprises two semiconductor cooling plates (81) fixedly embedded in the bottom end of the hollow outer shell (2); the cooling side outer walls of the two semiconductor cooling plates (81) are fixedly connected to an annular metal heat-conducting frame (82); the lower surface of the hollow support plate (3) located at the top of the annular metal heat-conducting frame (82) is fixedly connected to an air guide pipe (83); the air guide pipe (83) passes through the upper surface of the hollow support plate (3); a temperature sensor (84) is provided at the top of one of the air guide pipes (83); a U-shaped frame (85) is fixedly sleeved on the outer wall of the temperature sensor (84); the bottom end of the U-shaped frame (85) is fixedly connected to the upper surface of the hollow support plate (3); the heat-generating side of the semiconductor cooling plate (81) is fixedly connected to a heat sink (86); and a plurality of air inlet circular holes (87) are provided on the bottom outer wall of the outer frame (14).

6. The excavator battery monitoring device according to claim 5, characterized in that: The air supply mechanism (9) comprises a micro one-way air pump (91) fixedly connected to the inner wall of the bottom end of the hollow outer shell (2); the air outlet end of the micro one-way air pump (91) passes through the lower surface of the hollow outer shell (2) and is fixedly connected to a hose (92); the bottom end of the hose (92) is fixedly connected to a hollow fixed disk (93); the bottom ends of the plurality of support tubes (75) are fixedly connected to the top end of the hollow fixed disk (93); and the air inlet ends of the support tubes (75) are connected to the internal cavity of the hollow fixed disk (93).

7. The excavator battery monitoring device according to claim 6, characterized in that: Two symmetrically distributed rubber pads (17) are fixedly connected to the upper surface of the hollow fixed disk (93); fixing through holes (18) are provided at four corners of the upper surface of the hollow fixed disk (93); a protective soft cover (19) is fixedly sleeved on the outer wall of the bottom end of the hollow outer shell (2); and the bottom end of the protective soft cover (19) is fixedly connected to the upper surface of the hollow fixed disk (93).

8. The excavator battery monitoring device according to claim 2, characterized in that: The outer wall of the positioning bolt (53) is sleeved with a damping sleeve (20), the lower surface of the damping sleeve (20) is fixedly connected to the upper surface of the connecting strip (51), and the lower surface of the pressure strip (54) is fixedly connected to a rubber strip (16).

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