A hybrid forklift engine and battery temperature control system

Abstract

The present invention discloses a temperature control system for an engine and battery of a hybrid forklift. Firstly, an integrated design of an engine compartment and a power battery compartment is adopted, which not only greatly optimizes the structure and reduces the number of parts, but also reduces the assembly space and improves the integration effect of the forklift. Secondly, a temperature control system is adopted to simultaneously control the temperature of the engine and the battery, which can reduce cooling pipes and components, achieve simultaneous cooling and heat dissipation, and also use the heat of the engine to heat the battery in winter, thereby effectively solving the problem of power attenuation of the battery in winter. Finally, three independent cooling mechanisms, including coolant, semiconductor refrigerator and cooling fan, can cooperate with each other to enhance the cooling of the engine and battery, and can also realize the opening of the corresponding cooling mechanism according to the temperature of the working environment, thereby maximizing the two-way demand of low energy consumption and temperature control, and expanding practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of forklift parts, and in particular to an oil-electric hybrid forklift engine and a battery temperature control system. Background Art

[0002] Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles used for loading and unloading, stacking and short-distance transportation of palletized goods. They are called industrial vehicles by the International Organization for Standardization ISO / TC110. They are often used for transporting large objects in warehouses and are usually powered by fuel engines or batteries. During long-term operation, a large amount of heat will be generated in the engine room or battery compartment of the forklift. If the temperature is not cooled in time, it may cause safety accidents such as cylinder explosion.

[0003] As mentioned above, the current generation of hybrid forklifts utilizes a dual-power system of an engine and a battery. This system offers advantages such as low energy consumption and environmental protection, while also possessing strong power. However, due to the combined effects of the engine and battery, this system is not only more complex but also prone to heat accumulation. Conventional forklift engine temperature control systems not only have poor cooling effects but also fail to effectively manage battery temperature. Therefore, given these shortcomings, it is necessary to design a hybrid forklift engine and battery temperature control system. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a hybrid forklift engine and a battery temperature control system to solve the problems raised by the background technology.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a hybrid forklift engine and battery temperature control system, including a connecting cover, a heat dissipation column, a plate radiator A, a plate radiator B, a cooling chamber, a fixing plate, a semiconductor refrigerator, an engine compartment, a coolant storage chamber, a monitoring temperature control chamber, an engine temperature sensor, a power battery compartment, a middle temperature control cover, and a battery temperature sensor; the number of the heat dissipation columns is four, the heat dissipation columns are fixed at the four corners inside the connecting cover, the heat dissipation columns and the connecting cover are connected by hot melt, the A plate radiator is fixed at the upper end of the heat dissipation column, the A plate radiator and the heat dissipation column are connected by bolts, the B plate radiator is fixed at the lower end of the heat dissipation column, the B plate radiator and the heat dissipation column are connected by bolts, the cooling chamber is located at the lower end of the connecting cover, the cooling chamber is a rectangular groove, the fixing plate is fixed at the bottom of the connecting cover, the fixing plate and the connecting cover are connected by bolts, the semiconductor refrigerator is fixed inside the fixing plate, the semiconductor The body cooler is connected to the fixing plate by bolts, the engine compartment is fixed on the left side of the connecting cover, the engine compartment and the connecting cover are integrally formed, the coolant storage chamber is located on the outside of the engine compartment interior wall and the outside of the connecting cover inner wall, the coolant storage chamber is a hollow cavity, the monitoring and temperature regulating cavity is located on the inner side of the engine compartment interior wall, the monitoring and temperature regulating cavity is a hollow cavity, and the monitoring and temperature regulating cavity and the cooling cavity are communicated with each other, the engine temperature sensor is fixed on the left side of the inner wall of the monitoring and temperature regulating cavity, the engine temperature sensor and the monitoring and temperature regulating cavity are connected by bolts, the power battery compartment is fixed on the right side of the connecting cover, the power battery compartment and the connecting cover are integrally formed, the middle temperature regulating cover is fixed at the middle end of the power battery compartment, the middle temperature regulating cover and the power battery compartment are integrally formed, and the middle temperature regulating cover and the cooling cavity are communicated with each other, the battery temperature sensor is fixed inside the middle temperature regulating cover, and the battery temperature sensor and the middle temperature regulating cover are bolted;

[0006] Furthermore, air guide covers are fixedly provided at both the front and rear ends of the connecting cover, the air guide cover and the connecting cover are connected by hot melt, and the air guide cover and the cooling chamber are interconnected, an air filter element is fixedly provided on the outside of the air guide cover, the air filter element and the air guide cover are connected by snap fasteners, a cooling fan is fixedly provided on the inside of the air guide cover, and the cooling fan and the air guide cover are connected by bolts.

[0007] Furthermore, bolt mounting grooves are provided at the upper and lower ends of the heat dissipation column, and the bolt mounting grooves are threaded grooves.

[0008] Furthermore, the upper end of the semiconductor refrigerator is fixedly provided with a heat absorbing end, and the heat absorbing end is integrally formed with the semiconductor refrigerator. The lower end of the semiconductor refrigerator is also fixedly provided with a heat releasing end, and the heat releasing end is integrally formed with the semiconductor refrigerator.

[0009] Furthermore, an injection pipe is fixedly provided at the rear end of the right side of the top of the engine compartment. The injection pipe is connected to the engine compartment by hot melt, and the injection pipe is communicated with the coolant storage chamber. A sealing cover is also fixedly provided on the top of the injection pipe, and the sealing cover is connected to the injection pipe by internal and external threads.

[0010] Furthermore, a number of reinforcing columns are fixedly provided inside the coolant storage chamber and the monitoring and temperature adjustment chamber, and the reinforcing columns are integrally formed with the coolant storage chamber, the monitoring and temperature adjustment chamber and the engine compartment.

[0011] Furthermore, mounting brackets are fixedly provided at the front and rear ends of the bottom of the power battery compartment and the engine compartment, and the mounting brackets are integrally formed with the power battery compartment and the engine compartment respectively.

[0012] Compared with the existing technology, this hybrid forklift engine and battery temperature control system has the following advantages:

[0013] 1. The present invention adopts an integrated design of the engine compartment and the power battery compartment, which not only greatly optimizes the structure and reduces the number of parts, but also reduces the assembly space and improves the integration effect of the forklift.

[0014] 2. The present invention adopts a temperature control system to simultaneously control the temperature of the engine and battery, which can reduce cooling pipes and components, achieve simultaneous cooling and heat dissipation, and can also use the heat of the engine to heat the battery in winter, thereby effectively solving the problem of battery power attenuation in winter.

[0015] 3. The present invention uses three independent cooling mechanisms, namely coolant, semiconductor refrigerator and cooling fan, which can not only cooperate with each other to enhance the cooling of the engine and battery, but also can realize the opening of the corresponding cooling mechanism according to the temperature of the working environment, thereby taking into account the two-way needs of low energy consumption and temperature control to the greatest extent, and expanding practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the engine and battery temperature control system of a hybrid forklift;

[0017] Figure 2 This is a top view of the engine and battery temperature control system of a hybrid forklift;

[0018] Figure 3 This is a cross-sectional view of the engine and battery temperature control system of a hybrid forklift;

[0019] Figure 4 It is a three-dimensional hybrid forklift engine and battery temperature control system Figure 1 ;

[0020] Figure 5 It is a three-dimensional hybrid forklift engine and battery temperature control system Figure 2 ;

[0021] Figure 6 It is a three-dimensional hybrid forklift engine and battery temperature control system Figure 3 ;

[0022] Figure 7 This is a three-dimensional diagram of the separated state of the engine and battery temperature control system of a hybrid forklift;

[0023] Figure 8 It is the axle side stereoscopic structure connecting the hood, engine compartment and power battery compartment. Figure 1 ;

[0024] Figure 9 It is the axial three-dimensional structure connecting the hood, engine compartment and power battery compartment. Figure 2 .

[0025] Connecting cover 1, heat dissipation column 2, plate radiator A 3, plate radiator B 4, cooling chamber 5, fixing plate 6, semiconductor refrigerator 7, engine compartment 8, coolant storage chamber 9, monitoring temperature adjustment chamber 10, engine temperature sensor 11, power battery compartment 12, middle temperature adjustment cover 13, battery temperature sensor 14, air guide cover 101, air filter element 102, cooling fan 103, bolt mounting slot 201, heat absorption end 701, heat release end 702, liquid injection pipe 801, blocking cover 802, reinforcement column 901, mounting bracket 1201.

[0026] The following specific implementation manner will be further described in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] In the following text, numerous specific details are set forth in order to provide a thorough understanding of the concepts that form the basis of the described embodiments; however, it will be apparent to those skilled in the art that the described embodiments may be practiced without some or all of these specific details. In other instances, well-known processing steps are not specifically described.

[0028] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, a hybrid forklift engine and battery temperature control system includes a connecting cover 1, a heat dissipation column 2, a plate radiator A 3, a plate radiator B 4, a cooling chamber 5, a fixing plate 6, a semiconductor refrigerator 7, an engine compartment 8, a coolant storage chamber 9, a monitoring temperature control chamber 10, an engine temperature sensor 11, a power battery compartment 12, a middle temperature control cover 13, a battery temperature sensor 14, a deflector 101, an air filter 102, a cooling fan 103, a bolt mounting slot 201, a heat absorption end 701, a heat release end 702, a liquid injection pipe 801, a blocking cover 802, a reinforcement column 901, and a mounting bracket 1201;

[0029] In one embodiment, the connecting cover 1 can connect the engine compartment 8 and the power battery compartment 12 together, which not only optimizes the structure and reduces the subsequent assembly space, but also facilitates the subsequent simultaneous control of the temperature of the engine and battery through a temperature control system;

[0030] In one embodiment, the heat dissipation columns 2 at the four corners of the connection cover 1 can not only facilitate the transfer of high temperature inside the connection cover 1 to the A plate radiator 3 at the upper end and the B plate radiator 4 at the lower end, but also facilitate the cooperation between the A plate radiator 3 and the B plate radiator 4 for efficient heat dissipation, thereby improving the heat dissipation performance of the connection cover 1 and enhancing the strength of the connection cover 1. At the same time, with the help of the bolt mounting slots 201, it is also convenient for the installation of the internal carrier of the forklift.

[0031] In one embodiment, the cooling chamber 5 can be connected to the monitoring temperature control chamber 10 and the middle temperature control cover 13 respectively, which is conducive to the internal semiconductor refrigerator 7 to simultaneously transfer low temperature to the monitoring temperature control chamber 10 and the middle temperature control cover 13, thereby achieving synchronous cooling of the engine and battery;

[0032] In one embodiment, the fixing plate 6 can be installed at the bottom position of the connecting cover 1, so that the semiconductor cooler 7 is inserted into the cooling chamber 5, which is beneficial for the heat absorption end 701 at the top of the semiconductor cooler 7 to continuously absorb heat from the cooling chamber 5, that is, to achieve the purpose of rapid cooling. At the same time, the heat release end 702 at the bottom of the semiconductor cooler 7 can also continuously release heat. With the help of the heat dissipation effect of the B-plate radiator 4, it is also effective to avoid continuous heat accumulation in the bottom area of the semiconductor cooler 7, further improving the heat dissipation performance.

[0033] In one embodiment, a conventional forklift engine assembly can be placed inside the engine compartment 8 without affecting the normal operation of the engine. A monitoring temperature control chamber 10 is provided on the outer side of the inner wall of the engine compartment 8. This not only facilitates the continuous absorption of heat by the semiconductor cooler 7 into the engine compartment 8, thereby improving the heat dissipation of the engine area, but also allows the engine temperature sensor 11 to detect the temperature of the engine compartment in real time to achieve monitoring purposes.

[0034] In one embodiment, coolant can be injected into the coolant reservoir 9, which is conducive to the coolant filling the inside and outside of the connection cover 1 and the outside of the engine compartment 8, thereby absorbing heat from the engine area and reducing heat conduction from the engine to the battery area. At the same time, the left area of the power battery compartment 12 can also be heat-absorbed by the coolant, thereby also achieving the purpose of cooling the battery.

[0035] In one embodiment, a power battery pack can be placed inside the power battery compartment 12, and the middle temperature control cover 13 is separated into upper and lower parts. This not only enhances the strength of the power battery compartment 12, but also helps to disperse the power batteries, effectively avoiding the accumulation of excessive battery cells, and facilitates the subsequent low-temperature conduction in the cooling chamber 5, thereby improving the cooling and heat dissipation performance. At the same time, the battery temperature sensor 14 on the inner wall of the middle temperature control cover 13 can also detect the temperature inside the power battery compartment 12 in real time, thereby achieving the purpose of effective temperature monitoring.

[0036] In one embodiment, the air guide cover 101 is located at the front and rear ends of the connection cover 1 and is interconnected with the cooling chamber 5. The cooling fan 103 can improve air circulation and dissipate heat inside the cooling chamber 5. The air filter 102 can also filter the incoming air to effectively prevent particles and dust from entering the cooling chamber 5.

[0037] In one embodiment, the injection pipe 801 is connected to the coolant storage chamber 9, and the blocking cover 802 is opened by rotating to facilitate the injection of coolant into the coolant storage chamber 9 through the injection pipe 801;

[0038] In one embodiment, a number of reinforcement columns 901 are fixedly installed in the coolant storage chamber 9 and the monitoring and temperature control chamber 10 inside the engine compartment 8. The reinforcement columns 901 can improve the strength and support of the engine compartment 8. The mounting bracket 1201 can facilitate the installation of the engine compartment 8 and the power battery compartment 12 on the mounting carrier inside the forklift, ultimately achieving the purpose of secure installation of the device.

[0039] Specifically, in hot summer or when the working environment is too high, the coolant is injected into the coolant storage chamber 9, and then the semiconductor refrigerator 7 is turned on. The cooperation of the coolant and the semiconductor refrigerator 7 can enhance the heat absorption effect inside the engine compartment 8 and the cooling chamber 5, which is conducive to quickly cooling the engine compartment 8 and the power battery compartment 12 at the same time; in spring and autumn or when the working environment temperature is high, the engine compartment 8 and the power battery compartment 12 are cooled at the same time by means of the coolant in the coolant storage chamber 9, and the cooling fan 103 is used to improve the cooling chamber 5. Air circulation promotes the outward conduction of heat to achieve a low degree of cooling; in cold winter or low operating environment temperature scenarios, the coolant inside the coolant storage chamber 9 is evacuated, and the temperature transfer generated after the engine inside the engine compartment 8 is turned on is used to heat the batteries inside the power battery compartment 12, which is beneficial to the increase in the ambient temperature of the power battery compartment 12, thereby effectively reducing the attenuation problem of the power battery in winter. In addition, when the temperature inside the power battery compartment 12 is high, the cooling fan 103 can be turned on to appropriately lower the temperature, ensuring that the battery temperature is in a safe state.

[0040] The present invention is not limited to the above-mentioned specific implementation methods. Various changes made by ordinary technicians in this field based on the above-mentioned concept without creative work are all within the scope of protection of the present invention.

Claims

1. A hybrid forklift engine and battery temperature control system, characterized in that Including connection cover, heat dissipation column, A plate radiator, B plate radiator, cooling chamber, fixing plate, semiconductor refrigerator, engine compartment, coolant storage chamber, monitoring temperature control chamber, engine temperature sensor, power battery compartment, middle temperature control cover, battery temperature sensor;There are four heat dissipation columns, which are fixed at the four corners inside the connecting cover. The heat dissipation columns and the connecting cover are connected by hot melt. The A plate radiator is fixed at the upper end of the heat dissipation column, and the A plate radiator is connected to the heat dissipation column by bolts. The B plate radiator is fixed at the lower end of the heat dissipation column, and the B plate radiator is connected to the heat dissipation column by bolts. The cooling chamber is located at the lower end of the connecting cover, and the cooling chamber is a rectangular groove. The fixing plate is fixed at the bottom of the connecting cover, and the fixing plate is connected to the connecting cover by bolts. The semiconductor refrigerator is fixed inside the fixing plate, and the semiconductor refrigerator is connected to the fixing plate by bolts. The engine compartment is fixed on the left side of the connecting cover. The engine compartment and the connecting cover are integrally formed, the coolant storage chamber is located on the outside of the inner wall of the engine compartment and the outer side of the inner wall of the connecting cover, the coolant storage chamber is a hollow cavity, the monitoring and temperature adjustment chamber is located on the inner side of the inner wall of the engine compartment, the monitoring and temperature adjustment chamber is a hollow cavity, and the monitoring and temperature adjustment chamber and the cooling chamber are interconnected, the engine temperature sensor is fixed on the left side of the inner wall of the monitoring and temperature adjustment chamber, the engine temperature sensor and the monitoring and temperature adjustment chamber are connected by bolts, the power battery compartment is fixed on the right side of the connecting cover, the power battery compartment and the connecting cover are integrally formed, the middle temperature adjustment cover is fixed on the middle end of the inner part of the power battery compartment, and the middle temperature adjustment cover and the power battery compartment are integrally formed. The middle temperature regulating cover is connected to the cooling chamber, the battery temperature sensor is fixed inside the middle temperature regulating cover, the battery temperature sensor and the middle temperature regulating cover are connected by bolts, the front and rear ends of the connecting cover are fixed with air guide covers, the air guide cover and the connecting cover are connected by hot melt, and the air guide cover and the cooling chamber are connected to each other, the outside of the air guide cover is fixed with an air filter, the air filter and the air guide cover are connected by snap fasteners, the inside of the air guide cover is fixed with a cooling fan, the cooling fan and the air guide cover are connected by bolts, the upper end of the semiconductor refrigerator is fixed with a heat absorbing end, the heat absorbing end is integrally formed with the semiconductor refrigerator, and the lower end of the semiconductor refrigerator is fixed with a heat absorbing end. A heat release end is also fixed, and the heat release end is integrally formed with the semiconductor refrigerator. A liquid injection pipe is also fixed at the rear end of the right side of the top of the engine compartment. The liquid injection pipe is connected to the engine compartment by hot melt, and the liquid injection pipe is connected to the coolant storage chamber. A sealing cap is also fixed on the top of the liquid injection pipe, and the sealing cap is rotatably connected to the liquid injection pipe by internal and external threads. A number of reinforcing columns are also fixed inside the coolant storage chamber and the monitoring and temperature adjustment chamber. The reinforcing columns are integrally formed with the coolant storage chamber, the monitoring and temperature adjustment chamber and the engine compartment. Mounting brackets are also fixed at the front and rear ends of the bottom of the power battery compartment and the engine compartment, and the mounting brackets are respectively integrally formed with the power battery compartment and the engine compartment. The connecting cover can connect the engine compartment and the power battery compartment into one; The heat dissipation column can facilitate the high temperature of the connection cover to be transferred to the plate radiator A and the plate radiator B, which is beneficial for the plate radiator A and the plate radiator B to dissipate heat together and also enhance the strength of the connection cover; A monitoring and temperature-regulating chamber is located on the outside of the inner wall of the engine compartment, which facilitates the continuous transfer of heat absorbed by the semiconductor cooler into the engine compartment, improving the heat dissipation of the engine area. In addition, the engine temperature sensor can also detect the temperature of the engine compartment in real time. The coolant reservoir can be filled with coolant, which is conducive to the coolant filling the outside of the connection cover and the outside of the engine compartment, absorbing heat from the engine area and reducing heat conduction from the engine to the battery area. At the same time, the left area of the power battery compartment can also be absorbed by the coolant, thereby achieving battery cooling; The middle temperature control cover is separated into upper and lower parts, which enhances the strength of the power battery compartment and is also conducive to dispersing the power batteries, effectively avoiding the accumulation of excessive battery cells, facilitating the low-temperature conduction in the cooling chamber, and improving heat dissipation. At the same time, the battery temperature sensor on the inner wall of the middle temperature control cover can also detect the temperature inside the power battery compartment in real time.

2. The engine and battery temperature control system for a hybrid forklift according to claim 1, characterized in that Bolt mounting grooves are also provided at the upper and lower ends of the heat dissipation column, and the bolt mounting grooves are threaded grooves.

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