CN111976470B - 一种液冷型电动叉车集成动力系统及其控制方法 - Google Patents
一种液冷型电动叉车集成动力系统及其控制方法 Download PDFInfo
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- CN111976470B CN111976470B CN202010880702.9A CN202010880702A CN111976470B CN 111976470 B CN111976470 B CN 111976470B CN 202010880702 A CN202010880702 A CN 202010880702A CN 111976470 B CN111976470 B CN 111976470B
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- B60—VEHICLES IN GENERAL
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- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K1/00—Arrangement or mounting of electrical propulsion units
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
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- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02034—Gearboxes combined or connected with electric machines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
- F16H2057/02056—Gearboxes for particular applications for vehicle transmissions for utility vehicles, e.g. tractors or agricultural machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
本发明公开了一种液冷型电动叉车集成动力系统及其控制方法,包括集成式传动齿轮箱、集成式电机控制器、油泵以及整车控制器;集成式传动齿轮箱,包括驱动电机传动机构和油泵电机传动机构;集成式电机控制器,包括驱动电机控制单元和油泵电机控制单元;所述集成式传动齿轮箱、集成式电机控制器、驱动电机、油泵电机、油泵和整车控制器完全集成安装,组成所述液冷型电动叉车集成动力系统;整车控制器对集成动力系统进行综合控制。本发明的液冷型电动叉车集成动力系统集成度高,外观包络尺寸小,取消电机与电机控制器之间的外部三相动力线束及低压采样控制线束的连接,极大提高电系统安全性、降低电能传递损耗和生产成本。
Description
技术领域
本发明涉及电动工业车辆技术领域,具体涉及一种液冷型电动叉车集成动力系统及其控制方法。
背景技术
中国的工业车辆市场有广阔的发展空间,尤其是电动叉车的市场潜力巨大。随着经济的持续发展,对于电动叉车驱动及液压动力系统提出了更高的要求。
现有电动叉车驱动及液压动力系统技术路线单一,基本采用驱动电机与前桥减速器组成行走动力单元,油泵电机及油泵组成液压动力单元,驱动电机控制器与油泵电机控制器分体布置组成电机控制单元;其整个动力系统采用大范围分散布置方式,行走动力单元布置于车体前桥处,液压动力单元布置于车体中部或后部,电机控制单元布置于车体中部或后部;该系统中,行走动力单元、液压动力单元均与电机控制单元距离较远,连接线缆长度过长,不利于整车装配,且线缆过长将增加成本、影响电能使用效率,最终将导致整车能耗大幅增加;对于驱动及液压动力系统大范围分散布置的状态,其散热方式也较复杂和低效,需要对每个单元进行单独冷却或散热,而且多为自然传导散热或强制风冷散热,导致结构复杂、散热效果差,成本大幅增加。
由此可见,电动叉车的驱动及液压动力系统需要一种结构高度集成、可实现集中布置以及高效散热的集成动力系统,以此降低系统成本、提高系统效率。
发明内容
为了克服上述的技术问题,本发明的目的在于提供一种液冷型电动叉车集成动力系统及其控制方法。
本发明的目的可以通过以下技术方案实现:
一种液冷型电动叉车集成动力系统,包括集成式传动齿轮箱、驱动电机、油泵电机、集成式电机控制器、油泵和整车控制器;
所述集成式传动齿轮箱包括驱动电机传动机构和油泵电机传动机构;所述驱动电机传动机构设置在集成式传动齿轮箱内部,驱动电机传动机构包括若干组平行布置的齿轮轴,各组齿轮轴上的配对齿轮相互啮合,且在输入齿轮轴一上设置有花键一,输出齿轮轴一上设置有差速器,所述驱动电机传动机构的各齿轮轴均通过轴承设置在集成式传动齿轮箱的壳体上;所述油泵电机传动机构设置在集成式传动齿轮箱内部,油泵电机传动机构包括若干组平行布置的齿轮轴,各组齿轮轴上的配对齿轮相互啮合,且在输入齿轮轴二上和输出齿轮轴二上分别设置有花键二、花键三,所述油泵电机传动机构的各齿轮轴均通过轴承设置在集成式传动齿轮箱的壳体上;
所述驱动电机通过电机后盖上的安装螺栓固定在集成式传动齿轮箱的侧面,所述驱动电机输出轴通过花键与所述驱动电机传动机构上的输入齿轮轴一上的花键一连接;
所述油泵电机通过电机后盖上的安装螺栓固定在集成式传动齿轮箱的侧面,所述油泵电机输出轴通过花键与所述油泵电机传动机构上的输入齿轮轴二上的花键二连接;
所述集成式电机控制器固定安装在驱动电机、油泵电机和集成式传动齿轮箱上部;
所述油泵固定安装在集成式传动齿轮箱的侧面,所述油泵输入轴通过花键与所述油泵电机传动机构的输出齿轮轴二上的花键三连接;
所述整车控制器固定安装在集成式电机控制器的上盖上,所述整车控制器与集成式电机控制器通过线束电气连接;所述整车控制器通过接收叉车各操作信号以及动力电池组状态和请求信号,对所述集成动力系统进行协调控制,具体控制方法包括如下:
第一步:所述整车控制器接收来自叉车驱动需求信号、液压操作需求信号和电池组管理系统的状态、请求信号;叉车驱动需求信号包括油门踏板信号、制动踏板信号和档位开关信号信息;液压操作需求信号包括举升电位计信号、倾斜开关信号及相关属具信号信息;电池组管理系统的状态和请求信号包括电池组电池状态信息、温度信息、电流电压信息以及放电倍率允许信息总线信息;
第二步:所述整车控制器将所述来自叉车驱动需求信号、液压操作需求信号和电池组管理系统的状态、请求信号进行处理,优先根据所述电池组管理系统的状态和请求信号,处理接收到的所述叉车驱动需求信号和液压操作需求信号,按需、按量给驱动及液压动力系统提供所需动力;所述整车控制器根据叉车运行及作业状态,通过低压电源及控制线束对集成式电机控制器分别输出驱动控制指令和液压控制指令,进而协调控制驱动电机控制器、油泵电机控制器进行电流输出;
第三步:所述驱动电机控制器通过设置于集成式电机控制器壳体内部的驱动电机与驱动电机控制器之间的高压连接和低压连接对驱动电机进行控制;所述油泵电机控制器通过设置于集成式电机控制器壳体内部的油泵电机与油泵电机控制器之间的高压连接和低压连接对油泵电机进行控制;所述驱动电机的动力通过驱动电机传动机构对外输出驱动动力,所述油泵电机的动力通过油泵电机传动机构输出至油泵,所述油泵将高压油源输出至液压操作系统;最终实现电动叉车的驱动运行以及液压转向和电动叉车的各种液压传动的执行动作;
所述驱动电机壳体内部设置有散热水道一,驱动电机后盖上设置有散热水道一的进水口一和出水口一;所述油泵电机壳体内部设置有散热水道二,油泵电机后盖上设置有散热水道二的出水口二,油泵电机前盖上设置有散热水道二的进水口二;所述集成式电机控制器底部设置有散热水道三,集成式电机控制器一侧设置有散热水道三的进水口三和出水口三;所述集成式电机控制器一侧的出水口三与所述油泵电机前盖上的进水口二通过散热管路一连接,所述油泵电机后盖上的出水口二与所述驱动电机后盖上的进水口一通过散热管路二连接;所述集成式电机控制器一侧的进水口三与外部冷却系统的出水口通过散热管路三连接;所述驱动电机后盖上的出水口一与外部冷却系统的进水口通过散热管路四连接。
作为本发明进一步的方案:集成式电机控制器包括驱动电机控制器和油泵电机控制器;所述驱动电机控制器的三相接线端与所述驱动电机后盖上的三相接线端在集成式电机控制器壳体内部通过铜排直接连接;所述驱动电机控制器的低压信号接线端与所述驱动电机后盖上的低压信号接线端在集成式电机控制器壳体内部通过对插接插件直接连接;所述油泵电机控制器的三相接线端与所述油泵电机后盖上的三相接线端在集成式电机控制器壳体内部通过铜排直接连接;所述油泵电机控制器的低压信号接线端与所述油泵电机后盖上的低压信号接线端在集成式电机控制器壳体内部通过对插接插件直接连接。
作为本发明进一步的方案:所述驱动电机传动机构包括平行布置的输入齿轮轴一、第二轴、第三轴和输出轴一;所述输入齿轮轴一、第二轴、第三轴和输出轴一均通过轴承固定安装在集成式传动齿轮箱的壳体上;所述输入齿轮轴一上固定连接有输入轴齿轮三,第二轴上固定连接有一级减速被动齿轮和二级减速主动齿轮,第三轴上固定连接有二级减速被动齿轮和三级减速主动齿轮,输出轴一上固定连接有输出齿轮轴一;所述输入轴齿轮三与一级减速被动齿轮传动啮合,二级减速主动齿轮与二级减速被动齿轮传动啮合,三级减速主动齿轮与输出齿轮轴一上齿轮传动啮合;所述输入齿轮轴一上设置有花键一,输出轴一上设置有差速器。
作为本发明进一步的方案:所述油泵电机传动机构包括平行布置输入齿轮轴二和输出齿轮轴二;所述输入齿轮轴二和输出齿轮轴二均通过轴承固定安装在集成式传动齿轮箱的壳体上;所述输入齿轮轴二上固定连接有输入轴齿轮四,输出齿轮轴二上固定连接有输出轴齿轮;所述输入轴齿轮四与输出轴齿轮传动啮合;所述输入齿轮轴二和输出齿轮轴二上分别设置有花键二、花键三。
作为本发明进一步的方案:所述集成式电机控制器上设置有直流高压正负极接插件和低压控制信号的信号接插件;所述集成式电机控制器上盖上设置有检修拆卸盖板,检修拆卸盖板下设置有开盖开关。
作为本发明进一步的方案:所述集成式传动齿轮箱上设置有与叉车驱动桥壳相连接的安装法兰盘和与叉车车体相连接的两种辅助安装固定的螺栓孔一、螺栓孔二。
作为本发明进一步的方案:一种液冷型电动叉车集成动力系统的控制方法,包括以下步骤:
第一步:所述整车控制器接收来自叉车驱动需求信号、液压操作需求信号和电池组管理系统的状态、请求信号;叉车驱动需求信号包括油门踏板信号、制动踏板信号和档位开关信号信息;液压操作需求信号包括举升电位计信号、倾斜开关信号及相关属具信号信息;电池组管理系统的状态和请求信号包括电池组电池状态信息、温度信息、电流电压信息以及放电倍率允许信息总线信息;
第二步:所述整车控制器将所述来自叉车驱动需求信号、液压操作需求信号和电池组管理系统的状态、请求信号进行处理,优先根据所述电池组管理系统的状态和请求信号,处理接收到的所述叉车驱动需求信号和液压操作需求信号,按需、按量给驱动及液压动力系统提供所需动力;所述整车控制器根据叉车运行及作业状态,通过低压电源及控制线束对集成式电机控制器分别输出驱动控制指令和液压控制指令,进而协调控制驱动电机控制器、油泵电机控制器进行电流输出;
第三步:所述驱动电机控制器通过设置于集成式电机控制器壳体内部的驱动电机与驱动电机控制器之间的高压连接和低压连接对驱动电机进行控制;所述油泵电机控制器通过设置于集成式电机控制器壳体内部的油泵电机与油泵电机控制器之间的高压连接和低压连接对油泵电机进行控制;所述驱动电机的动力通过驱动电机传动机构对外输出驱动动力,所述油泵电机的动力通过油泵电机传动机构输出至油泵,所述油泵将高压油源输出至液压操作系统;最终实现电动叉车的驱动运行以及液压转向和电动叉车的各种液压传动的执行动作。
本发明的有益效果:
本发明可使电动叉车的动力系统高度集成、布置紧凑,结构上完全集成为一个统一的整体,无需分散式布置,结构简单、便于整车安装,大幅提高动力系统的集成度及可靠性;
本发明使电动叉车的驱动及液压集成动力系统完全省去电机及电机控制器之间的外部连接线缆,通过大幅度减少线缆长度,在减少装配及安装工序的同时降低线缆过长产生的电阻,提高动力系统的运行效率,同时通过省去外部连接电缆,提高整车绝缘安全及电气安全性能,延长电动叉车的安全作业时间;
本发明通过设置集成式串联水道的液冷散热形式,对电机及电机控制器进行强制液冷散热,大幅降低电动叉车驱动及液压集成动力系统的温升,提高集成动力系统的可靠性、延长使用寿命,满足更严苛的电动叉车使用要求。
附图说明
下面结合附图对本发明作进一步的说明。
图1是本发明液冷型电动叉车集成动力系统的整体结构;
图2是本发明液冷型电动叉车集成动力系统的整体示意图;
图3是本发明液冷型电动叉车集成动力系统的整体仰视图;
图4是本发明液冷型电动叉车集成动力系统的整体侧视图;
图5是本发明集成式传动齿轮箱的结构示意图;
图6是本发明驱动电机传动机构的结构示意图;
图7是本发明油泵电机传动机构的结构示意图;
图8是本发明控制执行示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
请参阅图1-8所示,一种液冷型电动叉车集成动力系统,包括集成式传动齿轮箱1、驱动电机9、油泵电机6、集成式电机控制器13、油泵11和整车控制器2;
所述集成式传动齿轮箱1包括驱动电机传动机构1000和油泵电机传动机构1100;所述驱动电机传动机构1000设置在集成式传动齿轮箱1内部,驱动电机传动机构1000包括若干组平行布置的齿轮轴,各组齿轮轴上的配对齿轮相互啮合,且在输入齿轮轴一1003上设置有花键一1001,输出齿轮轴一1009上设置有差速器1008,所述驱动电机传动机构1000的各齿轮轴均通过轴承设置在集成式传动齿轮箱1的壳体1110上;所述油泵电机传动机构1100设置在集成式传动齿轮箱1内部,油泵电机传动机构1100包括若干组平行布置的齿轮轴,各组齿轮轴上的配对齿轮相互啮合,且在输入齿轮轴二1103上和输出齿轮轴二1104上分别设置有花键二1101、花键三1105,所述油泵电机传动机构1100的各齿轮轴均通过轴承设置在集成式传动齿轮箱1的壳体1110上;
所述驱动电机9通过电机后盖上的安装螺栓固定在集成式传动齿轮箱1的侧面,所述驱动电机9输出轴通过花键与所述驱动电机传动机构1000上的输入齿轮轴一1003上的花键一1001连接;
所述油泵电机6通过电机后盖上的安装螺栓固定在集成式传动齿轮箱1的侧面,所述油泵电机6输出轴通过花键与所述油泵电机传动机构1100上的输入齿轮轴二1103上的花键二1101连接;
所述集成式电机控制器13固定安装在驱动电机9、油泵电机6和集成式传动齿轮箱1上部;
所述油泵11固定安装在集成式传动齿轮箱1的侧面,所述油泵11输入轴通过花键与所述油泵电机传动机构1100的输出齿轮轴二1104上的花键三1105连接;
所述整车控制器2固定安装在集成式电机控制器13的上盖上,所述整车控制器2与集成式电机控制器13通过线束电气连接;所述整车控制器2通过接收叉车各操作信号以及动力电池组状态和请求信号,对所述集成动力系统进行协调控制,具体控制方法包括如下:
第一步:所述整车控制器2接收来自叉车驱动需求信号300、液压操作需求信号301和电池组管理系统的状态、请求信号302等信息;自叉车驱动需求信号300包括油门踏板信号、制动踏板信号和档位开关信号等信息;液压操作需求信号301包括举升电位计信号、倾斜开关信号及相关属具信号等信息;电池组管理系统的状态和请求信号302包括电池组电池状态信息、温度信息、电流电压信息以及放电倍率允许信息等总线信息;
第二步:所述整车控制器2将所述来自叉车驱动需求信号300、液压操作需求信号301和电池组管理系统的状态、请求信号302等信息进行处理,优先根据所述电池组管理系统的状态和请求信号302等信息,处理接收到的所述叉自叉车驱动需求信号300和液压操作需求信号301信息,按需、按量给驱动及液压动力系统提供所需动力;所述整车控制器2根据叉车运行及作业状态,通过低压电源及控制线束对集成式电机控制器13分别输出驱动控制指令和液压控制指令,进而协调控制驱动电机控制器、油泵电机控制器进行电流输出;
第三步:所述驱动电机控制器通过设置于集成式电机控制器13壳体内部的驱动电机9与驱动电机控制器之间的高压连接和低压连接对驱动电机9进行控制;所述油泵电机控制器通过设置于集成式电机控制器13壳体内部的油泵电机6与油泵电机控制器之间的高压连接和低压连接对油泵电机6进行控制;所述驱动电机9的动力通过驱动电机传动机构1000对外输出驱动动力,所述油泵电机6的动力通过油泵电机传动机构1100输出至油泵11,所述油泵11将高压油源输出至液压操作系统;最终实现电动叉车的驱动运行以及液压转向和电动叉车的各种液压传动的执行动作。
集成式电机控制器13包括驱动电机控制器和油泵电机控制器;所述驱动电机控制器的三相接线端与所述驱动电机9后盖上的三相接线端在集成式电机控制器13壳体内部通过铜排直接连接;所述驱动电机控制器的低压信号接线端与所述驱动电机9后盖上的低压信号接线端在集成式电机控制器13壳体内部通过对插接插件直接连接;所述油泵电机控制器的三相接线端与所述油泵电机6后盖上的三相接线端在集成式电机控制器13壳体内部通过铜排直接连接;所述油泵电机控制器的低压信号接线端与所述油泵电机6后盖上的低压信号接线端在集成式电机控制器13壳体内部通过对插接插件直接连接。
所述驱动电机9壳体内部设置有散热水道一,驱动电机9后盖上设置有散热水道一的进水口一80和出水口一8;所述油泵电机6壳体内部设置有散热水道二,油泵电机6后盖上设置有散热水道二的出水口二60,油泵电机6前盖上设置有散热水道二的进水口二61;所述集成式电机控制器13底部设置有散热水道三,集成式电机控制器13一侧设置有散热水道三的进水口三12和出水口三120;所述集成式电机控制器13一侧的出水口三120与所述油泵电机6前盖上的进水口二61通过散热管路一5连接,所述油泵电机6后盖上的出水口二60与所述驱动电机9后盖上的进水口一80通过散热管路二7连接;所述集成式电机控制器13一侧的进水口三12与外部冷却系统的出水口通过散热管路三连接;所述驱动电机9后盖上的出水口一8与外部冷却系统的进水口通过散热管路四连接;以此组成一个电机与电机控制器串联散热水道循环。
所述驱动电机传动机构1000包括平行布置的输入齿轮轴一1003、第二轴1005、第三轴1006和输出轴一;所述输入齿轮轴一1003、第二轴1005、第三轴1006和输出轴一均通过轴承固定安装在集成式传动齿轮箱1的壳体1110上;所述输入齿轮轴一1003上固定连接有输入轴齿轮三1002,第二轴1005上固定连接有一级减速被动齿轮1004和二级减速主动齿轮1011,第三轴1006上固定连接有二级减速被动齿轮1007和三级减速主动齿轮1010,输出轴一上固定连接有输出齿轮轴一1009;所述输入轴齿轮三1002与一级减速被动齿轮1004传动啮合,二级减速主动齿轮1011与二级减速被动齿轮1007传动啮合,三级减速主动齿轮1010与输出齿轮轴一1009上齿轮传动啮合;所述输入齿轮轴一1003上设置有花键一1001,输出轴一上设置有差速器1008;所述油泵电机传动机构1100包括平行布置输入齿轮轴二1103和输出齿轮轴二1104;所述输入齿轮轴二1103和输出齿轮轴二1104均通过轴承固定安装在集成式传动齿轮箱1的壳体1110上;所述输入齿轮轴二1103上固定连接有输入轴齿轮四1102,输出齿轮轴二1104上固定连接有输出轴齿轮1106;所述输入轴齿轮四1102与输出轴齿轮1106传动啮合;所述输入齿轮轴二1103和输出齿轮轴二1104上分别设置有花键二1101、花键三1105;其中,驱动电机传动机构1000的输入轴花键一1001和油泵电机传动机构1100的输入轴花键二1101作为集成式传动齿轮箱1的动力输入接口;驱动电机传动机构1000输出轴上的差速器1008作为集成式传动齿轮箱1的驱动动力输出接口;油泵电机传动机构1100输出轴花键三1105作为集成式传动齿轮箱1的液压动力输出接口。
所述集成式电机控制器13上设置有直流高压正负极接插件3和低压控制信号的信号接插件4;所述集成式电机控制器13上盖上设置有检修拆卸盖板10,检修拆卸盖板10下设置有开盖开关;其中,检修拆卸盖板10打开后,简单拆除三相线束连接螺栓和低压控制线束接插件,即可将集成式电机控制器13与驱动电机9和油泵电机6分离,便于拆卸;同时,检修拆卸盖板10下设置的开盖开关,可在带电操作时切断系统高压,保证操作时的电气安全。
所述集成式传动齿轮箱1上设置有与叉车驱动桥壳相连接的安装法兰盘101和与叉车车体相连接的两种辅助安装固定的螺栓孔一102、螺栓孔二103。其中,与叉车车体相连接的两种辅助安装固定螺栓孔一102、螺栓孔二103可根据叉车的实际安装状态任选其一即可,提高了所述集成动力系统的安装适应性。
一种液冷型电动叉车集成动力系统的控制方法,包括以下步骤:
第一步:整车控制器2接收来自叉车驱动需求信号300、液压操作需求信号301和电池组管理系统的状态、请求信号302等信息;叉车驱动需求信号300包括油门踏板信号、制动踏板信号和档位开关信号等信息;液压操作需求信号301包括举升电位计信号、倾斜开关信号及相关属具信号等信息;电池组管理系统的状态和请求信号302包括电池组电池状态信息、温度信息、电流电压信息以及放电倍率允许信息等总线信息;
第二步:所述整车控制器2将所述来自叉车驱动需求信号300、液压操作需求信号301和电池组管理系统的状态、请求信号302等信息进行处理,优先根据所述电池组管理系统的状态和请求信号302等信息,处理接收到的所述叉车驱动需求信号300和液压操作需求信号301信息,按需、按量给驱动及液压动力系统提供所需动力;所述整车控制器2根据叉车运行及作业状态,通过低压电源及控制线束对集成式电机控制器13分别输出驱动控制指令和液压控制指令,进而协调控制驱动电机控制器、油泵电机控制器进行电流输出;
第三步:所述驱动电机控制器通过设置于集成式电机控制器13壳体内部的驱动电机9与驱动电机控制器之间的高压连接和低压连接对驱动电机9进行控制;所述油泵电机控制器通过设置于集成式电机控制器13壳体内部的油泵电机6与油泵电机控制器之间的高压连接和低压连接对油泵电机6进行控制;所述驱动电机9的动力通过驱动电机传动机构1000对外输出驱动动力,所述油泵电机6的动力通过油泵电机传动机构1100输出至油泵11,所述油泵11将高压油源输出至液压操作系统;最终实现电动叉车的驱动运行以及液压转向和电动叉车的各种液压传动的执行动作。
本发明的工作原理:本发明可使电动叉车的动力系统高度集成、布置紧凑,结构上完全集成为一个统一的整体,无需分散式布置,结构简单、便于整车安装,大幅提高动力系统的集成度及可靠性;同时,本发明使电动叉车的驱动及液压集成动力系统完全省去电机及电机控制器之间的外部连接线缆,通过大幅度减少线缆长度,在减少装配及安装工序的同时降低线缆过长产生的电阻,提高动力系统的运行效率,同时通过省去外部连接电缆,提高整车绝缘安全及电气安全性能,延长电动叉车的安全作业时间;此外,本发明通过设置集成式串联水道的液冷散热形式,对电机及电机控制器进行强制液冷散热,大幅降低电动叉车驱动及液压集成动力系统的温升,提高集成动力系统的可靠性、延长使用寿命,满足更严苛的电动叉车使用要求。
在本说明书的描述中,参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上内容仅仅是对本发明所作的举例和说明,所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,只要不偏离发明或者超越本权利要求书所定义的范围,均应属于本发明的保护范围。
Claims (6)
1.一种液冷型电动叉车集成动力系统,其特征在于,包括集成式传动齿轮箱(1)、驱动电机(9)、油泵电机(6)、集成式电机控制器(13)、油泵(11)和整车控制器(2);
所述集成式传动齿轮箱(1)包括驱动电机传动机构(1000)和油泵电机传动机构(1100);所述驱动电机传动机构(1000)设置在集成式传动齿轮箱(1)内部,驱动电机传动机构(1000)包括若干组平行布置的齿轮轴,各组齿轮轴上的配对齿轮相互啮合,且在输入齿轮轴一(1003)上设置有花键一(1001),输出齿轮轴一(1009)上设置有差速器(1008),所述驱动电机传动机构(1000)的各齿轮轴均通过轴承设置在集成式传动齿轮箱(1)的壳体(1110)上;所述油泵电机传动机构(1100)设置在集成式传动齿轮箱(1)内部,油泵电机传动机构(1100)包括若干组平行布置的齿轮轴,各组齿轮轴上的配对齿轮相互啮合,且在输入齿轮轴二(1103)上和输出齿轮轴二(1104)上分别设置有花键二(1101)、花键三(1105),所述油泵电机传动机构(1100)的各齿轮轴均通过轴承设置在集成式传动齿轮箱(1)的壳体(1110)上;
所述驱动电机(9)通过电机后盖上的安装螺栓固定在集成式传动齿轮箱(1)的侧面,所述驱动电机(9)输出轴通过花键与所述驱动电机传动机构(1000)上的输入齿轮轴一(1003)上的花键一(1001)连接;
所述油泵电机(6)通过电机后盖上的安装螺栓固定在集成式传动齿轮箱(1)的侧面,所述油泵电机(6)输出轴通过花键与所述油泵电机传动机构(1100)上的输入齿轮轴二(1103)上的花键二(1101)连接;
所述集成式电机控制器(13)固定安装在驱动电机(9)、油泵电机(6)和集成式传动齿轮箱(1)上部;
所述油泵(11)固定安装在集成式传动齿轮箱(1)的侧面,所述油泵(11)输入轴通过花键与所述油泵电机传动机构(1100)的输出齿轮轴二(1104)上的花键三(1105)连接;
所述整车控制器(2)固定安装在集成式电机控制器(13)的上盖上,所述整车控制器(2)与集成式电机控制器(13)通过线束电气连接;所述整车控制器(2)通过接收叉车各操作信号以及动力电池组状态和请求信号,对所述集成动力系统进行协调控制,具体控制方法包括如下:
第一步:所述整车控制器(2)接收来自叉车驱动需求信号(300)、液压操作需求信号(301)和电池组管理系统的状态、请求信号(302);叉车驱动需求信号(300)包括油门踏板信号、制动踏板信号和档位开关信号信息;液压操作需求信号(301)包括举升电位计信号、倾斜开关信号及相关属具信号信息;电池组管理系统的状态和请求信号(302)包括电池组电池状态信息、温度信息、电流电压信息以及放电倍率允许信息总线信息;
第二步:所述整车控制器(2)将所述来自叉车驱动需求信号(300)、液压操作需求信号(301)和电池组管理系统的状态、请求信号(302)进行处理,优先根据所述电池组管理系统的状态和请求信号(302),处理接收到的所述叉车驱动需求信号(300)和液压操作需求信号(301),按需、按量给驱动及液压动力系统提供所需动力;所述整车控制器(2)根据叉车运行及作业状态,通过低压电源及控制线束对集成式电机控制器(13)分别输出驱动控制指令和液压控制指令,进而协调控制驱动电机控制器、油泵电机控制器进行电流输出;
第三步:所述驱动电机控制器通过设置于集成式电机控制器(13)壳体内部的驱动电机(9)与驱动电机控制器之间的高压连接和低压连接对驱动电机(9)进行控制;所述油泵电机控制器通过设置于集成式电机控制器(13)壳体内部的油泵电机(6)与油泵电机控制器之间的高压连接和低压连接对油泵电机(6)进行控制;所述驱动电机(9)的动力通过驱动电机传动机构(1000)对外输出驱动动力,所述油泵电机(6)的动力通过油泵电机传动机构(1100)输出至油泵(11),所述油泵(11)将高压油源输出至液压操作系统;最终实现电动叉车的驱动运行以及液压转向和电动叉车的各种液压传动的执行动作;
所述驱动电机(9)壳体内部设置有散热水道一,驱动电机(9)后盖上设置有散热水道一的进水口一(80)和出水口一(8);所述油泵电机(6)壳体内部设置有散热水道二,油泵电机(6)后盖上设置有散热水道二的出水口二(60),油泵电机(6)前盖上设置有散热水道二的进水口二(61);所述集成式电机控制器(13)底部设置有散热水道三,集成式电机控制器(13)一侧设置有散热水道三的进水口三(12)和出水口三(120);所述集成式电机控制器(13)一侧的出水口三(120)与所述油泵电机(6)前盖上的进水口二(61)通过散热管路一(5)连接,所述油泵电机(6)后盖上的出水口二(60)与所述驱动电机(9)后盖上的进水口一(80)通过散热管路二(7)连接;所述集成式电机控制器(13)一侧的进水口三(12)与外部冷却系统的出水口通过散热管路三连接;所述驱动电机(9)后盖上的出水口一(8)与外部冷却系统的进水口通过散热管路四连接。
2.根据权利要求1所述的一种液冷型电动叉车集成动力系统,其特征在于,集成式电机控制器(13)包括驱动电机控制器和油泵电机控制器;所述驱动电机控制器的三相接线端与所述驱动电机(9)后盖上的三相接线端在集成式电机控制器(13)壳体内部通过铜排直接连接;所述驱动电机控制器的低压信号接线端与所述驱动电机(9)后盖上的低压信号接线端在集成式电机控制器(13)壳体内部通过对插接插件直接连接;所述油泵电机控制器的三相接线端与所述油泵电机(6)后盖上的三相接线端在集成式电机控制器(13)壳体内部通过铜排直接连接;所述油泵电机控制器的低压信号接线端与所述油泵电机(6)后盖上的低压信号接线端在集成式电机控制器(13)壳体内部通过对插接插件直接连接。
3.根据权利要求1所述的一种液冷型电动叉车集成动力系统,其特征在于,所述驱动电机传动机构(1000)包括平行布置的输入齿轮轴一(1003)、第二轴(1005)、第三轴(1006)和输出轴一;所述输入齿轮轴一(1003)、第二轴(1005)、第三轴(1006)和输出轴一均通过轴承固定安装在集成式传动齿轮箱(1)的壳体(1110)上;所述输入齿轮轴一(1003)上固定连接有输入轴齿轮三(1002),第二轴(1005)上固定连接有一级减速被动齿轮(1004)和二级减速主动齿轮(1011),第三轴(1006)上固定连接有二级减速被动齿轮(1007)和三级减速主动齿轮(1010),输出轴一上固定连接有输出齿轮轴一(1009);所述输入轴齿轮三(1002)与一级减速被动齿轮(1004)传动啮合,二级减速主动齿轮(1011)与二级减速被动齿轮(1007)传动啮合,三级减速主动齿轮(1010)与输出齿轮轴一(1009)上齿轮传动啮合;所述输入齿轮轴一(1003)上设置有花键一(1001),输出轴一上设置有差速器(1008)。
4.根据权利要求1所述的一种液冷型电动叉车集成动力系统,其特征在于,所述油泵电机传动机构(1100)包括平行布置输入齿轮轴二(1103)和输出齿轮轴二(1104);所述输入齿轮轴二(1103)和输出齿轮轴二(1104)均通过轴承固定安装在集成式传动齿轮箱(1)的壳体(1110)上;所述输入齿轮轴二(1103)上固定连接有输入轴齿轮四(1102),输出齿轮轴二(1104)上固定连接有输出轴齿轮(1106);所述输入轴齿轮四(1102)与输出轴齿轮(1106)传动啮合;所述输入齿轮轴二(1103)和输出齿轮轴二(1104)上分别设置有花键二(1101)、花键三(1105)。
5.根据权利要求1所述的一种液冷型电动叉车集成动力系统,其特征在于,所述集成式电机控制器(13)上设置有直流高压正负极接插件(3)和低压控制信号的信号接插件(4);所述集成式电机控制器(13)上盖上设置有检修拆卸盖板(10),检修拆卸盖板(10)下设置有开盖开关。
6.根据权利要求1所述的一种液冷型电动叉车集成动力系统,其特征在于,所述集成式传动齿轮箱(1)上设置有与叉车驱动桥壳相连接的安装法兰盘(101)和与叉车车体相连接的两种辅助安装固定的螺栓孔一(102)、螺栓孔二(103)。
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