CN115162456A - Three-electric linkage arrangement system of pure electric mini excavator - Google Patents
Three-electric linkage arrangement system of pure electric mini excavator Download PDFInfo
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- CN115162456A CN115162456A CN202210727952.8A CN202210727952A CN115162456A CN 115162456 A CN115162456 A CN 115162456A CN 202210727952 A CN202210727952 A CN 202210727952A CN 115162456 A CN115162456 A CN 115162456A
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- 230000001012 protector Effects 0.000 claims description 10
- 235000014676 Phragmites communis Nutrition 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
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- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
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- 238000000429 assembly Methods 0.000 abstract description 2
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- 238000013461 design Methods 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
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- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
- E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2091—Control of energy storage means for electrical energy, e.g. battery or capacitors
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Power Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a three-electric linkage arrangement system of a pure electric mini excavator and the pure electric mini excavator, belonging to the technical field of the pure electric mini excavator and solving the problems of reliability and safety of the three-electric linkage arrangement, and the technical scheme is characterized in that an electric control device is arranged on an excavator base, is respectively electrically connected with a driving motor, an infrared distance measuring sensor and a pressure sensor and adjusts respective work; wherein, get into main battery mount with two battery module assemblies, the auxiliary battery mount, when needing to increase the battery module power supply, electrically controlled device control driving motor starts, drive the slip table and lean on to the main battery mount, in the assembly grafting in-process pressure sensor of wildcard feeds back the atress data in real time and gives electrically controlled device, electrically controlled device adjusts the translation rate of slip table according to the atress data, and judge the electricity federation condition, the effect that provides operational reliability and security has been reached, it is convenient because of the battery change, it is reliable, just also solve the time problem of the continuous voyage of digging machine easily.
Description
Technical Field
The invention relates to the field of pure electric mini excavators, in particular to a three-electric linkage arrangement system of a pure electric mini excavator.
Background
At present, the invention of application publication No. CN 112554270A relates to a compact electric excavator body arrangement structure, including: a first battery provided on the rear right side of the cab; a second battery provided on the right side of the vehicle body; a motor disposed behind the vehicle body; a third battery disposed above the motor; a hydraulic oil tank disposed in front of the third battery; a radiator disposed behind the motor; a weak current box disposed on the left side of the first battery; a BDU, a BCU, which is arranged at the front side of the second battery; the PDU box and the MCU are positioned behind the third battery; the height of the whole machine is greatly reduced, the height of the vehicle body is distributed at the rear window of the cab, and the rear view is ensured; the tail turning radius of the whole diesel engine is an arc taking the turning center as the center of a circle, and the radius is extremely small and is not easy to collide because of less counter weight compared with the conventional diesel engine and full utilization of the arc space; the whole machine is reasonably arranged, the gravity centers are symmetrically and uniformly distributed, and the gravity center of the upper part of each posture falls within the rotary supporting ring; the maintenance is convenient.
In the production and manufacturing process of the pure electric mini excavator, the three electricity is called as follows: a battery, a motor, and an electrical control device.
According to feedback of the prior art, a fixed position generally exists for the arrangement structure of the battery, the motor and the electric control device, and therefore, the pure electric mini excavator with the changeable arrangement structure is found to be lacking in the market.
Based on the current technical situation, the three-electric linkage arrangement system provided by the scheme is characterized in that the batteries are connected in the whole system, the motors are provided with the functions, the number of the plurality of batteries is increased, decreased and changed, the electric control device controls the number of the batteries and the discharge of the batteries according to the power utilization condition of the batteries or external input or the condition of motor drive output, and the control problem can be better solved for the brand-new three-electric linkage system.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, at least solves the technical problems in the related technology to a certain extent, and provides a three-electric linkage arrangement system of a pure electric mini excavator, which is used for overcoming the problems of battery allocation and linkage control under different power consumption conditions in the prior art, has the advantages of convenient battery replacement, increased cruising working time of the excavator, capability of easily realizing the increase and replacement of battery modules according to different required working times of the excavator in different use working conditions, stable and durable power supply, safety and reliability.
In order to solve the technical problem, the technical scheme of the invention is as follows: a three-electric linkage arrangement system of a pure electric mini excavator comprises:
an excavator base;
the sliding rail is arranged on the excavator base;
the sliding table is arranged on the sliding rail, and a driving motor is mounted on the sliding rail;
the first frame is arranged on the sliding table and can move along with the sliding table;
the auxiliary battery fixing frame is arranged on the first frame and used for assembling the battery modules, and is provided with a universal assembly for connecting the battery modules in a plug-in and electric manner, the universal assembly realizes series connection or parallel connection of the plurality of battery modules, and the universal assembly is provided with a pressure sensor for detecting the plug-in stress;
the second frame is arranged on the excavator base, and an infrared distance measuring sensor for detecting distance is mounted on the second frame;
the main battery fixing frame is arranged on the second frame, is used for assembling another battery module and is provided with a universal assembly for electrically connecting the battery modules in an opposite insertion way;
the electric control device is arranged on the base of the excavator, is respectively and electrically connected with the driving motor, the infrared distance measuring sensor and the pressure sensor, and regulates the work of the driving motor, the infrared distance measuring sensor and the pressure sensor; wherein the content of the first and second substances,
the two battery modules are assembled into the main battery fixing frame and the auxiliary battery fixing frame, when the power supply of the battery modules needs to be increased, the electric control device controls the driving motor to be started, the sliding table is driven to lean against the main battery fixing frame, the pressure sensor feeds stress data back to the electric control device in real time in the insertion process of the universal assembly, the electric control device adjusts the moving speed of the sliding table according to the stress data, and the electric connection condition is judged.
Preferably, the universal assembly comprises a socket structure and a plug structure, the socket structure comprises a metal jacket, the metal jacket is provided with a shrinkage hole part and a reaming part, the expansion rate of the outer diameter of the reaming part is different along the length direction, the plug structure comprises an insertion rod matched with the metal jacket, the insertion rod comprises a small rod part matched with the shrinkage hole part and a thick rod part matched with the reaming part, an annular space is reserved between the thick rod part and the reaming part, and the annular space is filled with an insulating ring.
Preferably, a safety module is arranged on the plug and electrically connected to the inserted link, a temperature sensor is arranged on the battery module and connected to the electric control device to feed back temperature data in real time, and an external control end for external triggering and circuit breaking is arranged on the safety module and connected to the electric control device.
Preferably, the electronic control device collects a plurality of external adverse factors { A1, A2, … … An }, assigns different weights { A1, A2, … … An } to different adverse factors, and embeds An adverse factor threshold B, and when the cumulative value of adverse factors W = (A1 × A1) + (A2 × A2) + … … (An × An) ≧ B, the electronic control device drives the motor to separate the sub-battery holder from the main battery holder.
Preferably, the electric control device controls the driving motor to work to drive the sliding table to move towards the auxiliary battery fixing frame at a speed Vc, the pressure sensor detects pressure data F and uploads the pressure data F to the electric control device, the infrared distance measuring sensor detects distance data L relative to the right side face of the main battery fixing frame at the moment and uploads the distance data L to the electric control device, a first distance reference value L1, a first pressure reference value F1, a second pressure reference value F2 and a third pressure reference value F3 are preset in the electric control device, the real-time distance data L is compared with the first distance reference value L1,
if L is larger than L1, the electric control device controls the sliding table to move according to data Vc;
and if the L is less than or equal to the L1, the electric control device further compares the pressure data F with a built-in preset value and further adjusts the moving speed.
Preferably, when F is less than or equal to F1, the electric control device judges that the universal assembly is plugged and loosened, controls the sliding table to move reversely, and prompts to replace the universal assembly;
when F1 is larger than F and smaller than or equal to F2, the electric control device judges that the universal assembly is suitable for plugging, and adjusts the running speed of the sliding table to V1, wherein V1 is a first preset sliding table moving speed;
when F2 is larger than F and is smaller than or equal to F3, the electronic control device judges that the outer diameter of the top end of the inner side end cone is large, and adjusts the operation speed of the sliding table to V2, wherein V2= V1- (F-F2) x F1, and F1 is a first adjustment parameter of the pressure difference value to the operation speed of the sliding table;
when F > F3, electric control unit judges that the plug-in of the universal assembly is blocked, and electric control unit controls the sliding table to move reversely to prompt blocking warning.
Preferably, when the electric control device judges that W is larger than or equal to B, the electric control device outputs a fusing signal to the safety module, and the safety module performs circuit breaking action.
Preferably, slide rail, slip table, first frame, auxiliary battery mount, second frame, main battery mount all set up in integrated cover, integrated cover seals the processing to be connected to there being breather, breather is used for changing the air in the integrated cover, reduces oxygen content, fills inert gas, and be connected with the baroceptor, baroceptor feedback atmospheric pressure data to electrically controlled device.
Preferably, the safety module comprises a PTC thermal protector, a reed pipe, a heating resistor, a magnet module and a leakage indicator lamp, wherein the reed pipe and the heating resistor which are connected in series are arranged in a shell of the PTC thermal protector, a control end is reserved outside the shell, and the leakage indicator lamp is connected to the shell through a resistor R.
A pure electric mini excavator comprises the three-electric linkage arrangement system of the pure electric mini excavator, and further comprises an upper vehicle platform structural part combination, an upper vehicle hydraulic system, a heat dissipation system and an electric system assembly;
the electric system assembly comprises a power battery, an electric control device, a motor and an electric wire harness;
the getting-on hydraulic system comprises a main pump, a main valve, a hydraulic oil tank and a pipeline;
the heat dissipation system comprises a water pump, a heat radiator, fan blades and a water tank.
Compared with the background technology, the technical effects of the invention are mainly reflected in the following aspects:
1. assembling the two battery modules into a main battery fixing frame and an auxiliary battery fixing frame, when the power supply of the battery modules needs to be increased, controlling the driving motor to start by the electric control device, driving the sliding table to lean against the main battery fixing frame, feeding stress data back to the electric control device by the pressure sensor in real time in the plugging process of the universal assembly, adjusting the moving speed of the sliding table by the electric control device according to the stress data, and judging the electric connection condition, so that the safety and reliability of the battery modules in the clutching process can be ensured, and the battery, the motor and the electric control device are mutually matched, so that the working reliability is further improved;
2. in the process of clutching the battery module, the reliability and safety of plugging can be improved through the matching of the unique plug structure and the socket structure, the plugging reliability and safety can be further improved, the assembling tightness degree is improved through the design of the shrinkage hole part and the hole expanding part, meanwhile, the plugging success rate is higher, and the plugging failure of the plug and the socket is not easy to cause;
3. comprehensive processing is carried out through multi-aspect data collected by the electric control device, the work coordination capacity of each part is greatly improved, the safety factor is improved, and the safety level is greatly improved.
Drawings
FIG. 1 is a schematic structural view in example 1;
FIG. 2 is a schematic structural view of a generic component in embodiment 1;
FIG. 3 is a schematic structural diagram of an insurance module according to embodiment 2;
FIG. 4 is a schematic structural view in example 3;
fig. 5 is a schematic diagram of the excavator in embodiment 4.
Reference numerals: 01. an excavator base; 02. a slide rail; 03. a sliding table; 04. a drive motor; 05. a first frame; 06. a sub-battery holder; 07. a general assembly component; 08. a pressure sensor; 09. a second frame; 10. an infrared distance measuring sensor; 11. a main battery fixing frame; 12. an electric control device; 13. a socket structure; 14. a plug structure; 15. a metal jacket; 151. a shrinkage section; 152. a reaming section; 16. inserting a rod; 161. a small rod part; 162. a thick rod part; 17. an annular space; 171. an insulating ring; 18. an insurance module; 19. an integrated cover; 20. a ventilation device; 21. an air pressure sensor; 221. a PTC thermal protector; 222. a reed switch; 223. a heat-generating resistor; 224. a magnet module; 225. leakage display lamp.
Detailed Description
The following detailed description of the present invention is provided to facilitate the understanding and appreciation of the technical aspects of the present invention in connection with the accompanying drawings.
Example 1:
a three-electric linkage arrangement system of a pure electric mini excavator is shown in reference to fig. 1 and comprises: an excavator base 01; the sliding rail 02 is arranged on the excavator base 01; the sliding table 03 is arranged on the sliding rail 02, and the driving motor 04 is arranged on the sliding rail 02; the first frame 05 is arranged on the sliding table 03 and can move along with the sliding table 03; the auxiliary battery fixing frame 06 is arranged on the first frame 05 and used for assembling the battery modules, and is provided with a universal assembly 07 which enables the battery modules to be oppositely plugged and electrically connected, the universal assembly 07 realizes the series connection or the parallel connection of the plurality of battery modules, and the universal assembly 07 is provided with a pressure sensor 08 for detecting plugging stress; the second frame 09 is arranged on the excavator base 01, and the infrared distance measuring sensor 10 for detecting the distance is arranged on the second frame 09; a main battery fixing frame 11, which is arranged on the second frame 09, is used for assembling another battery module, and is provided with a universal assembly 07 for electrically connecting the battery modules in a plug-in manner; and the electric control device 12 is arranged on the base 01 of the excavator, is respectively electrically connected with the driving motor 04, the infrared distance measuring sensor 10 and the pressure sensor 08, and regulates respective work.
The matching structure of the sliding table 03 and the sliding rail 02 can be a T-shaped rail or a linear rail structure, and the driving mode of the sliding table 03 moving on the sliding rail 02 can be a screw rod transmission mode or a belt wheel transmission mode, which does not explain the prior art means further. It may also be referred to as a power cell for a battery module. The replacement and assembly mode is that the battery is electrically connected on the main battery fixing frame 11 or the auxiliary battery fixing frame 06 and is mechanically assembled and fixed, and the electrical connection is realized by connecting a lead with the universal assembly 07. This is done by relative movement of the first frame 05 and the second frame 09. In the combination process, the technical problem of safety and reliability of the movement needs to be overcome.
The two battery modules are assembled into the main battery fixing frame 11 and the auxiliary battery fixing frame 06, when the power supply of the battery modules needs to be increased, the electric control device 12 controls the driving motor 04 to start, the sliding table 03 is driven to lean against the main battery fixing frame 11, the pressure sensor 08 feeds back stress data to the electric control device 12 in real time in the plugging process of the universal assembly 07, and the electric control device 12 adjusts the moving speed of the sliding table 03 according to the stress data and judges the electric connection condition.
In particular, as can be seen in connection with fig. 1 and 2, the generic assembly 07 comprises a socket structure 13 and a plug structure 14. Since it can be implemented using the existing plug and socket structure 13, it is of course preferable to use the original plug structure 14 and socket structure 13 in this embodiment. Wherein the rubber insulating base portion of the same portion as that of the existing plug receptacle is not explained. In contrast, as shown in fig. 2: the socket structure 13 includes a metal collet 15, the metal collet 15 has a constricted portion 151 and a counterbore portion 152, and the counterbore portion 152 has different expansion ratios in the longitudinal direction of the outer diameter of the counterbore portion 152. The left end of the metal jacket 15 is wire connectable, the unique shape of which is understood with reference to fig. 2. The plug structure 14 comprises a plug rod 16 which is matched with the metal jacket 15, and the right end of the plug rod 16 can be connected with a wire. The insert rod 16 comprises a small rod part 161 adapted to the shrinkage hole part 151 and a thick rod part 162 adapted to the reaming part 152, an annular space 17 is left between the thick rod part 162 and the reaming part 152, and the annular space 17 is filled with an insulating ring 171. The insulating ring 171 is made of flame-retardant rubber and has elasticity. The plug and receptacle can have coaxial requirements during mating. With the above-described configuration, if the position is shifted in the long-term use of the hand, it is possible to compensate and correct using this shape.
Example 2:
further optimization is performed on the basis of the embodiment 1, the safety module 18 is arranged on the plug, the safety module 18 is electrically connected to the inserted link 16, the battery module is provided with a temperature sensor, the temperature sensor is connected to the electric control device 12 and feeds back temperature data in real time, the safety module 18 is provided with an external control end for external triggering and breaking, and the external control end is connected to the electric control device 12. A separate thermal protector can be implemented for the safety module 18.
Preferably, in the embodiment shown in fig. 3, the safety module 18 includes a PTC thermal protector 221, a reed pipe 222, a heating resistor 223, a magnet module 224, and an electric leakage indicator lamp 225, the reed pipe 222 and the heating resistor 223 are disposed in series in a housing of the PTC thermal protector 221, and a control end is left outside the housing, and the electric leakage indicator lamp 225 is connected to the housing through a resistor R. In fig. 3, the motor is represented by the symbol M, which illustrates an example of the use of the safety module 18, the left end is used to connect the output terminals of the battery module, and the leakage indicator lamp 225 is a neon lamp. Two wire ends are reserved on the shell of the safety module 18, which are used as control ends and can be used for connecting an external test power supply, when the external power supply is connected or other controllers are connected or the electric control device 12 is connected, the magnet module 224 is closed by approaching the reed pipe 222, so that the heating resistor 223 works, and whether the PTC thermal protector 221 works normally or not under the condition of simulating high temperature, the PTC thermal protector 221 works. Thereby facilitating maintenance and debugging.
The structure is a hardware structure design and a mechanical structure design. The following is related to the design of the built-in control mode of the electronic control device 12.
The electronic control device 12 collects a plurality of external adverse factors { A1, A2, … … An }, assigns different weights { A1, A2, … … An } to different adverse factors, and embeds An adverse factor threshold B, and when the adverse factor cumulative value W = (A1 × A1) + (A2 × A2) + … … (An × An) ≧ B, the electronic control device 12 drives the motor 04 to separate the sub-battery holder 06 from the main battery holder 11. For adverse factors including temperature, pressure, speed, humidity, external working conditions and the like, the adverse factors can be collected by setting different sensors and monitors, and because the types of data are many and cannot be exemplified one by one, one example processing mode is mainly generated, that is, by configuring data of temperature, speed and pressure and corresponding weights, wherein the weights are added to be "100%", that is: a1+ a2+ … … an =100%. The threshold B is set through experience and can be adjusted automatically, and the size of the threshold can be adjusted according to conditions, so that the setting of different users for different safety requirements is met. When the electronic control device 12 determines that W is greater than or equal to B, the fusing signal is output to the safety module 18, and the safety module 18 performs an open circuit operation.
On the other hand, the electric control device 12 controls the driving motor 04 to operate, and drives the sliding table 03 to move to the auxiliary battery fixing frame 06 at the speed Vc, the pressure sensor 08 detects the pressure data F and uploads the pressure data F to the electric control device 12, the infrared distance measuring sensor 10 detects the distance data L relative to the right side surface of the main battery fixing frame 11 at that time and uploads the distance data L to the electric control device 12, wherein a first distance reference value L1, a first pressure reference value F1, a second pressure reference value F2 and a third pressure reference value F3 are preset in the electric control device 12, and the real-time distance data L is compared with the first distance reference value L1:
if L is larger than L1, the electric control device 12 controls the sliding table 03 to move with data Vc; if L is less than or equal to L1, the electric control device 12 further compares the pressure data F with a built-in preset value and further adjusts the moving speed.
Further, when F is less than or equal to F1, the electric control device 12 judges that the wildcard assembly 07 is plugged and loosened, controls the sliding table 03 to move reversely, and prompts to replace the wildcard assembly 07; when F1 is larger than F and smaller than or equal to F2, the electric control device 12 judges that the universal assembly 07 is suitable for plugging, and adjusts the running speed of the sliding table 03 to V1, wherein V1 is the moving speed of the first preset sliding table 03; when F2 is larger than F and is not larger than F3, the electronic control device 12 judges that the outer diameter of the top end of the inner side end cone is large, and adjusts the operation speed of the sliding table 03 to V2, wherein V2= V1- (F-F2) x F1, and F1 is a first adjustment parameter of the pressure difference value to the operation speed of the sliding table 03; when F is larger than F3, the electric control device 12 judges that the plugging of the wildcard assembly 07 is blocked, and the electric control device 12 controls the sliding table 03 to move reversely to prompt the blocking warning.
By the mode, operation control is performed, so that accidents can be effectively avoided, the safe reliability of butt joint can be improved to a great extent, the butt joint efficiency can be greatly improved, and the problem that safety and efficiency cannot be considered is solved.
Example 3:
referring to fig. 4, further, based on embodiments 1 and 2, the sliding rail 02, the sliding table 03, the first frame 05, the secondary battery fixing frame 06, the second frame 09, and the primary battery fixing frame 11 may be disposed in an integrated cover 19, the integrated cover 19 is sealed and connected to a ventilation device 20, the ventilation device 20 is used for replacing air in the integrated cover 19 to reduce oxygen content, and is filled with an inert gas, and connected to an air pressure sensor 21, and the air pressure sensor 21 feeds back air pressure data to the electronic control device 12. The inert gas may be nitrogen.
In summary, as can be seen from the above embodiments, the present solution has the advantages that: get into main battery mount 11 with two battery module assemblies, vice battery mount 06, when needing to increase the battery module power supply, electrically controlled device 12 control driving motor 04 starts, it leans on to main battery mount 11 to drive slip table 03, in the in-process pressure sensor 08 real-time feedback atress data gives electrically controlled device 12 of wildcard subassembly 07 grafting, electrically controlled device 12 adjusts the translation rate of slip table 03 according to the atress data, and judge the electricity federation condition, thereby can ensure the fail safe nature of battery module separation and reunion in-process, a battery, motor and the cooperation of the interconnection of 12 three of electrically controlled device, further improve the reliable operation degree. In the battery module separation and reunion in-process, through unique plug structure 14 and socket structure 13 cooperation, can improve the reliability and the security of pegging graft, can further improve, have higher success rate to pegging graft again when improving the inseparable degree of assembly through design shrinkage cavity portion 151 and reaming portion 152 to be difficult for causing plug and socket's grafting failure. Comprehensive processing is carried out through multi-aspect data collected by the electric control device 12, the work coordination capacity of each component is greatly improved, the safety factor is improved, and the safety level is greatly improved.
Example 4:
referring to fig. 5, a pure electric mini excavator includes the three-electric linkage arrangement system of the pure electric mini excavator, and further includes a loading platform structural member combination, a loading hydraulic system, a heat dissipation system, and an electrical system assembly; the electrical system assembly comprises a power battery, an electric control device 12, a motor and an electrical wiring harness; the getting-on hydraulic system comprises a main pump, a main valve, a hydraulic oil tank and a pipeline; the heat dissipation system comprises a water pump, a heat radiator, fan blades and a water tank. In this embodiment 4, the above embodiments 1 to 3 are mainly applied to the existing pure electric mini excavator, and a brief component composition description is provided for the existing pure electric mini excavator.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.
Claims (10)
1. A three-electric linkage arrangement system of a pure electric mini excavator comprises:
an excavator base (01);
a slide rail (02) provided on the excavator base (01);
the sliding table (03) is arranged on the sliding rail (02), and a driving motor (04) is mounted on the sliding rail (02);
the method is characterized in that: the first frame (05) is arranged on the sliding table (03) and can move along with the sliding table (03);
the auxiliary battery fixing frame (06) is arranged on the first frame (05) and used for assembling the battery modules, and is provided with a universal assembly (07) for enabling the battery modules to be oppositely plugged and electrically connected, the universal assembly (07) realizes series connection or parallel connection of the plurality of battery modules, and a pressure sensor (08) for detecting plugging stress is arranged on the universal assembly (07);
the second frame (09) is arranged on the excavator base (01), and an infrared distance measuring sensor (10) for detecting distance is mounted on the second frame (09);
the main battery fixing frame (11) is arranged on the second frame (09) and used for assembling another battery module, and a universal assembly (07) for electrically connecting the battery modules in an opposite insertion way is arranged;
the electric control device (12) is arranged on the excavator base (01), is respectively and electrically connected with the driving motor (04), the infrared distance measuring sensor (10) and the pressure sensor (08) and adjusts the respective work; wherein the content of the first and second substances,
the two battery modules are assembled into a main battery fixing frame (11) and an auxiliary battery fixing frame (06), when the power supply of the battery modules needs to be increased, an electric control device (12) controls a driving motor (04) to be started, a sliding table (03) is driven to lean against the main battery fixing frame (11), a pressure sensor (08) feeds stress data back to the electric control device (12) in real time in the plugging process of a universal assembly (07), the electric control device (12) adjusts the moving speed of the sliding table (03) according to the stress data, and the electricity connection condition is judged.
2. The three-electric linkage arrangement system of the pure electric mini excavator according to claim 1, characterized in that: the universal assembly (07) comprises a socket structure (13) and a plug structure (14), the socket structure (13) is wrapped by a metal jacket (15), the metal jacket (15) is provided with a shrinkage hole part (151) and a reaming part (152), the outer diameter of the reaming part (152) is unequal in expansion rate along the length direction, the plug structure (14) comprises an inserted rod (16) matched with the metal jacket (15), the inserted rod (16) comprises a small rod part (161) matched with the shrinkage hole part (151) and a thick rod part (162) matched with the reaming part (152), an annular space (17) is reserved between the thick rod part (162) and the reaming part (152), and an insulating ring (171) is filled in the annular space (17).
3. The three-electric linkage arrangement system of the pure electric mini excavator according to claim 1 or 2, characterized in that: the plug is provided with a safety module (18), the safety module (18) is electrically connected to the inserted link (16), the battery module is provided with a temperature sensor, the temperature sensor is connected to the electric control device (12) and feeds back temperature data in real time, the safety module (18) is provided with an external control end for external triggering and breaking, and the external control end is connected to the electric control device (12).
4. The three-electric linkage arrangement system of the pure electric mini excavator according to claim 3, wherein the three-electric linkage arrangement system comprises: the electronic control device (12) collects a plurality of external adverse factors { A1, A2, … … An }, different weights { A1, A2, … … An } are distributed to different adverse factors, an adverse factor threshold value B is arranged in the electronic control device, and when An adverse factor accumulated value W = (A1 × A1) + (A2 × A2) + … … (An × An) ≧ B, the electronic control device (12) drives the motor (04) to enable the secondary battery fixing frame (06) to be away from the primary battery fixing frame (11).
5. The three-electric linkage arrangement system of the pure electric mini excavator according to claim 1, characterized in that: the electric control device (12) controls the driving motor (04) to work, the sliding table (03) is driven to move towards the auxiliary battery fixing frame (06) at a speed Vc, the pressure sensor (08) detects pressure data F and uploads the pressure data to the electric control device (12), the infrared distance measuring sensor (10) detects distance data L relative to the right side face of the main battery fixing frame (11) at the moment and uploads the distance data L to the electric control device (12), wherein a first distance reference value L1, a first pressure reference value F1, a second pressure reference value F2 and a third pressure reference value F3 are preset in the electric control device (12), the real-time distance data L is compared with the first distance reference value L1,
if L is larger than L1, the electric control device (12) controls the sliding table (03) to move with data Vc;
if L is less than or equal to L1, the electric control device (12) further compares the pressure data F with a built-in preset value and further adjusts the moving speed.
6. The three-electric linkage arrangement system of the pure electric mini excavator according to claim 5, wherein the three-electric linkage arrangement system comprises: when F is less than or equal to F1, the electric control device (12) judges that the wildcard assembly (07) is plugged and loosened, controls the sliding table (03) to move reversely, and prompts to replace the wildcard assembly (07);
when F1 is larger than F and smaller than or equal to F2, the electric control device (12) judges that the universal assembly component (07) is suitable for plugging, and adjusts the running speed of the sliding table (03) to V1, wherein V1 is the moving speed of the first preset sliding table (03);
when F2 is larger than F and smaller than or equal to F3, the electronic control device (12) judges that the outer diameter of the top end of the inner side end cone is large, and adjusts the operation speed of the sliding table (03) to V2, wherein V2= V1- (F-F2) x F1, and F1 is a first adjustment parameter of the pressure difference value to the operation speed of the sliding table (03);
when F is larger than F3, the electric control device (12) judges that the plugging of the universal assembly (07) is blocked, and the electric control device (12) controls the sliding table (03) to move reversely to prompt the blocking warning.
7. The three-electric linkage arrangement system of the pure electric mini-excavator according to claim 4, which is characterized in that: when the electric control device (12) judges that W is larger than or equal to B, a fusing signal is output to the safety module (18), and the safety module (18) performs circuit breaking action.
8. The three-electric linkage arrangement system of the pure electric mini excavator according to claim 4, wherein the three-electric linkage arrangement system comprises: slide rail (02), slip table (03), first frame (05), auxiliary battery mount (06), second frame (09), main battery mount (11) all set up in integrated cover (19), integrated cover (19) seal the processing to be connected to there are breather (20), breather (20) are used for changing the air in integrated cover (19), reduce oxygen content, fill inert gas, and be connected with baroceptor (21), baroceptor (21) feedback atmospheric pressure data to electrically controlled device (12).
9. The three-electric linkage arrangement system of the pure electric mini excavator according to claim 3, wherein the three-electric linkage arrangement system comprises: the safety module (18) comprises a PTC thermal protector (221), a reed pipe (222), a heating resistor (223), a magnet module (224) and a leakage display lamp (225), wherein the reed pipe (222) and the heating resistor (223) which are connected in series are arranged in a shell of the PTC thermal protector (221), a control end is reserved outside the shell, and the shell is connected with the leakage display lamp (225) through a resistor R.
10. A pure electric mini excavator comprises the three-electric linkage arrangement system of the pure electric mini excavator, and is characterized in that: the system also comprises a boarding platform structural part combination, a boarding hydraulic system, a heat dissipation system and an electrical system assembly;
the electric system assembly comprises a power battery, an electric control device (12), a motor and an electric wire harness;
the getting-on hydraulic system comprises a main pump, a main valve, a hydraulic oil tank and a pipeline;
the heat dissipation system comprises a water pump, a heat radiator, fan blades and a water tank.
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| CN115162456B (en) | 2024-02-20 |
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