Whole vehicle thermal management integrated system for pure electric loader

Abstract

The invention discloses a whole vehicle thermal management integrated system for a pure electric loader, and belongs to the technical field of electric loaders. Comprising a hydraulic oil thermal management module, a cockpit thermal management module and a battery thermal management module, and the battery thermal management module is used for supplying heat or cold to a battery pack; the driving system heat management module is used for cooling the driving assembly; the heat exchange module is used for conveying heat of the hydraulic oil heat management module to the cockpit heat management module; the cockpit thermal management module is provided with a condenser, and the condenser is matched with the radiator of the driving system thermal management module. The hydraulic oil heat management module, the cockpit heat management module, the battery heat management module and the driving system heat management module which are independently controlled are cooperatively controlled, heat is reasonably distributed and circulated in the system, the occupied space of equipment is reduced, control is simpler and more efficient, and energy is saved.

Description

Technical Field

[0001] This invention belongs to the field of electric loader technology, specifically a vehicle thermal management integrated system for a pure electric loader. Background Art

[0002] In existing electric loaders, the battery thermal management system, cab air conditioning thermal management and drive system heat dissipation, and hydraulic oil cooling system are all decentralized and independent, and the control logic is scattered and cumbersome, taking up space. In winter, the hydraulic oil temperature in the hydraulic system is low, making it unable to quickly enter an efficient working rhythm. Moreover, after working for a period of time, the heat generated by the hydraulic oil in the hydraulic system is not utilized, wasting energy. Summary of the Invention

[0003] 1. The technical problem that the invention aims to solve

[0004] The purpose of this invention is to solve the problem of energy waste caused by the inability of existing electric loader thermal management systems to achieve unified and coordinated control.

[0005] 2. Technical solution

[0006] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0007] The present invention provides an integrated thermal management system for a pure electric loader, comprising:

[0008] A hydraulic oil thermal management module, which is used to output the heat generated by the hydraulic oil system;

[0009] A cockpit thermal management module, which is used to heat or cool the cockpit;

[0010] A battery thermal management module, which is used to heat or cool the battery pack;

[0011] A drive system thermal management module, which is used to cool the drive components;

[0012] A heat exchange module is used to transfer heat from the hydraulic oil thermal management module to the cockpit thermal management module.

[0013] The cockpit thermal management module is equipped with a condenser, which is configured in conjunction with the radiator of the drive system thermal management module; the condenser is also connected to a first passage of a liquid-cooled heat exchanger, and the second passage of the liquid-cooled heat exchanger is connected to the battery pack. The first passage and the second passage of the liquid-cooled heat exchanger are respectively refrigerant or heat transfer medium passages.

[0014] Preferably, the hydraulic oil thermal management module includes an interconnected hydraulic oil system and a hydraulic oil radiator.

[0015] Preferably, the heat exchange module includes a water-heating PTC II, a liquid heat exchanger, and a blower. The water-heating PTC II and the liquid heat exchanger are connected, and the liquid heat exchanger is configured in conjunction with a hydraulic oil radiator.

[0016] Preferably, the cockpit thermal management module further includes an in-cabin evaporator, a compressor, and an expansion valve. The in-cabin evaporator is configured in conjunction with a water-cooled PTC. Each end of the in-cabin evaporator is provided with a three-way valve. One branch of the three-way valve is connected sequentially to the condenser, the compressor, the expansion valve, and the other three-way valve. The branches of the two three-way valves are connected to both ends of the liquid-cooled heat exchanger.

[0017] Preferably, the thermal management module of the drive system further includes a drive motor, a working motor, and a multi-function controller. The heat dissipation pipes of the drive motor, the working motor, and the multi-function controller are connected to a radiator via a water pump, and the radiator is also connected to a kettle.

[0018] Preferably, the battery thermal management module includes a water pump and a water-heating PTC connected to the battery pack heat dissipation pipeline, and the water-heating PTC is connected to the second passage of the liquid-cooled heat exchanger.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0021] This invention discloses an integrated thermal management system for a pure electric loader, comprising: a hydraulic oil thermal management module for outputting heat generated by the hydraulic oil system; a cab thermal management module for heating or cooling the cab; a battery thermal management module for heating or cooling the battery pack; a drive system thermal management module for cooling the drive components; a heat exchange module for transferring heat from the hydraulic oil thermal management module to the cab thermal management module; the cab thermal management module includes a condenser that works in conjunction with a radiator in the drive system thermal management module; the condenser is also connected to a first passage of a liquid-cooled heat exchanger, and a second passage of the liquid-cooled heat exchanger is connected to the battery pack, wherein the first and second passages of the liquid-cooled heat exchanger are respectively refrigerant or heat transfer medium passages. By coordinating the previously separately controlled hydraulic oil thermal management module, cockpit thermal management module, battery thermal management module, and drive system thermal management module, heat is rationally distributed and circulated within the system. This not only reduces the space occupied by the equipment but also makes control simpler and more efficient, saving energy. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the overall structure of a vehicle thermal management integrated system for a pure electric loader according to the present invention.

[0023] Explanation of the labels in the diagram:

[0024] 100. Battery thermal management module; 110. Battery pack; 120. Water-cooled PTC unit; 130. Liquid-cooled heat exchanger;

[0025] 200. Cockpit thermal management module; 210. Cabin evaporator; 220. Condenser; 230. Compressor; 240. Expansion valve; 250. Three-way valve;

[0026] 300. Heat exchange module; 310. PTC water heating system II; 320. Liquid heat exchanger; 330. Blower;

[0027] 400. Drive system thermal management module; 410. Heat sink; 420. Drive motor; 430. Working motor; 440. All-in-one controller;

[0028] 500. Hydraulic oil thermal management module; 510. Hydraulic oil system; 520. Hydraulic oil radiator;

[0029] 610. Kettle; 620. Water pump. Detailed Implementation

[0030] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0033] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0035] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Example 1

[0037] Refer to the attached Figure 1 This embodiment provides an integrated thermal management system for a pure electric loader, including...

[0038] Hydraulic oil thermal management module 500, the hydraulic oil thermal management module 500 is used to output the heat generated by hydraulic oil system 510;

[0039] The cockpit thermal management module 200 is used to heat or cool the cockpit.

[0040] A battery thermal management module 100 is used to provide heating or cooling for the battery pack 110.

[0041] A drive system thermal management module 400 is used to cool the drive components.

[0042] Heat exchange module 300, which is used to transfer the heat from hydraulic oil thermal management module 500 to cockpit thermal management module 200;

[0043] The cockpit thermal management module 200 is equipped with a condenser 220, which is configured in conjunction with the radiator 410 of the drive system thermal management module 400. The condenser 220 is also connected to a first passage of a liquid-cooled heat exchanger 130, and a second passage of the liquid-cooled heat exchanger 130 is connected to a battery pack 110. The first passage and the second passage of the liquid-cooled heat exchanger 130 are respectively refrigerant or heat transfer medium passages.

[0044] The system in this embodiment coordinates the previously separately controlled hydraulic oil thermal management module 500, cockpit thermal management module 200, battery thermal management module 100, and drive system thermal management module 400 to distribute and circulate heat rationally within the system. This not only reduces the space occupied by the equipment but also makes the control simpler and more efficient, saving energy.

[0045] The hydraulic oil thermal management module 500 includes a hydraulic oil system 510 and a hydraulic oil radiator 520 that are interconnected.

[0046] The heat exchange module 300 includes a water-cooled PTC II 310, a liquid heat exchanger 320, and a blower 330. The water-cooled PTC II 310 and the liquid heat exchanger 320 are connected. The liquid heat exchanger 320 is configured in conjunction with the hydraulic oil radiator 520.

[0047] The cockpit thermal management module 200 also includes an in-cabin evaporator 210, a compressor 230, and an expansion valve 240. The in-cabin evaporator 210 is configured in conjunction with a water-cooled PTC 310. Each end of the in-cabin evaporator 210 is equipped with a three-way valve 250. One branch a of one three-way valve 250 connects sequentially to the condenser 220, the compressor 230, the expansion valve 240, and then to the other three-way valve 250. The branch b of the two three-way valves 250 connects to both ends of the liquid-cooled heat exchanger 130. The drive system thermal management module 400 also includes a drive motor 420, a working motor 430, and a multi-function controller 440. The cooling pipes of the drive motor 420, the working motor 430, and the multi-function controller 440 are connected to a radiator 410 via a water pump. The radiator 410 is also connected to a kettle 610.

[0048] The battery thermal management module 100 includes a water pump 620 and a water heating PTC-120 connected to the heat dissipation pipe of the battery pack 110. The water heating PTC-120 is connected to the second passage of the liquid cooling heat exchanger 130.

[0049] The hydraulic oil heat is transferred to the cab air conditioner for heating via a liquid-cooled heat exchanger 130, thus reusing the hydraulic oil heat. The cab air conditioner and battery cooling share a condenser 220, which in turn shares a blower 330 with the drive system radiator 410, reducing costs. During heating, the control system uses the inlet and outlet water temperatures and the inlet and outlet hydraulic oil temperatures as control targets, with output power as only a process variable. A control algorithm achieves precise control of the inlet and outlet water and oil temperatures. When the oil temperature is low, a water-heated PTC is used to heat the hydraulic oil. Once the oil temperature reaches a certain level, the heat is transferred to the cab via the liquid-cooled heat exchanger 130 to meet the heating requirements of the cab air conditioner. During cooling, depending on the vehicle's driving and parking conditions, the control system operates the compressor 230 within a set speed range based on the battery system and the driver's needs. The system also controls the three-way valve 250 to input the set cooling capacity to the cab and battery system.

[0050] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A vehicle thermal management integrated system for a pure electric loader, characterized in that: include A hydraulic oil thermal management module (500), the hydraulic oil thermal management module (500) being used to output heat generated by a hydraulic oil system (510); A cockpit thermal management module (200), the cockpit thermal management module (200) being used to provide heating or cooling for the cockpit; A battery thermal management module (100), the battery thermal management module (100) being used to provide heating or cooling for a battery pack (110); A drive system thermal management module (400), the drive system thermal management module (400) being used to cool the drive components; A heat exchange module (300), the heat exchange module (300) being used to transfer heat from the hydraulic oil thermal management module (500) to the cockpit thermal management module (200); The cockpit thermal management module (200) is provided with a condenser (220), and the condenser (220) is arranged in cooperation with the radiator (410) of the drive system thermal management module (400); the condenser (220) is also connected to a first passage of a liquid-cooled heat exchanger (130), and a second passage of the liquid-cooled heat exchanger (130) is connected to the battery pack (110), and the first passage and the second passage of the liquid-cooled heat exchanger (130) are respectively refrigerant or heat medium passages.

2. The vehicle thermal management integrated system for a pure electric loader according to claim 1, characterized in that: The hydraulic oil thermal management module (500) comprises a hydraulic oil system (510) and a hydraulic oil radiator (520) which are interconnected.

3. The vehicle thermal management integrated system for a pure electric loader according to claim 2, characterized in that: The heat exchange module (300) comprises a water-heating PTC II (310), a liquid heat exchanger (320) and a blower (330); the water-heating PTC II (310) and the liquid heat exchanger (320) are connected to each other; and the liquid heat exchanger (320) is arranged in cooperation with a hydraulic oil radiator (520).

4. The vehicle thermal management integrated system for a pure electric loader according to claim 3 is characterized in that: The cockpit thermal management module (200) further comprises an in-cabin evaporator (210), a compressor (230), and an expansion valve (240); the in-cabin evaporator (210) is arranged in cooperation with a water-heating PTC 2 (310); three-way valves (250) are respectively arranged at both ends of the in-cabin evaporator (210); a branch (a) of one of the three-way valves (250) is connected in sequence to a condenser (220), a compressor (230), an expansion valve (240) and another three-way valve (250); and two branches (b) of the three-way valves (250) are connected to both ends of a liquid-cooled heat exchanger (130).

5. The vehicle thermal management integrated system for a pure electric loader according to claim 4 is characterized in that: The drive system thermal management module (400) further comprises a drive motor (420), a working motor (430) and an all-in-one controller (440); the heat dissipation pipelines of the drive motor (420), the working motor (430) and the all-in-one controller (440) are connected to the radiator (410) via a water pump; and the radiator (410) is also connected to a kettle (610).

6. The vehicle thermal management integrated system for a pure electric loader according to claim 4, characterized in that: The battery thermal management module (100) comprises a water pump (620) and a water-heating PTC-1 (120) which are connected to a heat dissipation pipeline of a battery pack (110); the water-heating PTC-1 (120) is connected to a second passage of a liquid-cooling heat exchanger (130).

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