CN114069962A - 一种双源动力电机的驱动系统 - Google Patents
一种双源动力电机的驱动系统 Download PDFInfo
- Publication number
- CN114069962A CN114069962A CN202111286028.2A CN202111286028A CN114069962A CN 114069962 A CN114069962 A CN 114069962A CN 202111286028 A CN202111286028 A CN 202111286028A CN 114069962 A CN114069962 A CN 114069962A
- Authority
- CN
- China
- Prior art keywords
- power
- motor
- energy storage
- vehicle
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 61
- 238000010248 power generation Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1861—Rotary generators driven by animals or vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/143—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
-
- 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
- Y02T10/62—Hybrid vehicles
-
- 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
- Y02T10/64—Electric machine technologies in electromobility
-
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
本发明公开了一种双源动力电机的驱动系统,包括发电电机、逆变器、A组储能电池、B组储能电池、动力电机,其特征在于:发电电机通过支架安装在车辆的轮毂内侧,发电电机通过车辆正常行驶时提供的动力带动轮毂旋转。本发明与现有技术相比的优点在于:该技术可实现在行驶过程中的充电,能有效增加新能源电动车续航里程,大大解决新能源电动车续航里程不足痛点;车辆通过动力储能回收,有效的增加了电池使用效率,减少了车辆行驶对能源的消耗,实现了节能减排的社会效益;车辆边行驶边发电,不增加额外能耗,大大降低了车辆的行驶能源消耗成本,特别是在商用车领域,可大大降低车辆的运营成本,增加用户收入。
Description
技术领域
本发明涉及新能源电动车辆动力电机系统领域,具体是指一种双源动力电机的驱动系统。
背景技术
现有技术只能通过电机在不做功时,利用车辆的滑行动力对储能电池进行储能回收充电,发电时间短,利用率不高,转化效率低,无法实现长时间发电,持续为动力电机提供动力来源,无法增加电动车辆的续航里程。电源频繁输入输出快速切换,电压不稳,对电子元器件要求高,易损坏电子元器件;短时间充电导致储能电池寿命降低,电流电压快速波动,对电机损耗较大。
发明内容
本发明要解决的技术问题是通过双源动力电机的技术设计,实现电动车在行驶过程中,利用轮毂的转动带动线圈切割磁场并产生感应电动势,实现车辆边行驶边充电的效果,对电动车辆实现增加续航里程的效果,做到节能减排,降低车辆运行成本。
为解决上述技术问题,本发明提供的技术方案为:一种双源动力电机的驱动系统,包括发电电机、逆变器、A组储能电池、B组储能电池、动力电机,发电电机通过支架安装在车辆的轮毂内侧,发电电机通过车辆正常行驶时提供的动力带动轮毂旋转,轮毂处的发电电机内部线圈通过切割磁感线产生感应电动势发电,并通过发电电机与逆变器间的连接导线向逆变器传输电能,逆变器通过传输导线分别连接有A组储能电池和B组储能电池,通过逆变器恒流稳压后的电能分别输入进A组储能电池和B组储能电池实现A组储能电池和B组储能电池的充电;
逆变器通过输电导线连接有动力电机,动力电机通过逆变器输入电能,为车辆提供行驶动力。
本发明与现有技术相比的优点在于:1)该技术可实现在行驶过程中的充电,能有效增加新能源电动车续航里程,大大解决新能源电动车续航里程不足痛点;
2)车辆通过动力储能回收,有效的增加了电池使用效率,减少了车辆行驶对能源的消耗,实现了节能减排的社会效益;
3)通过双源动力匹配,可实现车辆多轮驱动,能较好应对各种路况和特殊工况需求,大大提升了车辆的驱动动力,可以使车辆的应用范围更为广泛;
4)车辆边行驶边发电,不增加额外能耗,大大降低了车辆的行驶能源消耗成本,特别是在商用车领域,可大大降低车辆的运营成本,增加用户收入。
作为改进,A组储能电池和B组储能电池为车辆提供电池储能和电能输出,A组储能电池和B组储能电池根据剩余电量情况,通过人工或自动来回切换,可实现持续动力来源。
作为改进,发电电机线圈通电时,动力电机输出扭矩,带动轮毂旋转,实现车辆行驶;外部扭矩带动发电电机线圈做切割磁场,可实现感应电动势,输出感应电流。
作为改进,发电电机与车辆轮毂采用一体结构。
附图说明
图1是一种双源动力电机的驱动系统的连接示意图。
图2是实施例的结构示意图。
如图所示:1、发电电机,2、逆变器,3、A组储能电池,4、B组储能电池,5、动力电机,6、发电电机一,7、逆变器一,8、发电电机二,9、A组储能电池一,10、B组储能电池一,11、发电电机三,12、动力电机一,13、发电电机四。
具体实施方式
下面结合附图对本发明做进一步的详细说明。
本发明在具体实施时,一种双源动力电机的驱动系统,包括发电电机1、逆变器2、A组储能电池3、B组储能电池4、动力电机5,所述发电电机1通过支架安装在车辆的轮毂内侧,所述发电电机1通过车辆正常行驶时提供的动力带动轮毂旋转,轮毂处的发电电机1内部线圈通过切割磁感线产生感应电动势发电,并通过发电电机1与逆变器2间的连接导线向逆变器2传输电能,所述逆变器2通过传输导线分别连接有A组储能电池3和B组储能电池4,通过所述逆变器2恒流稳压后的电能分别输入进所述A组储能电池3和B组储能电池4实现A组储能电池3和B组储能电池4的充电;
所述逆变器2通过输电导线连接有动力电机5,所述动力电机5通过逆变器2输入电能,为车辆提供行驶动力。
所述A组储能电池3和B组储能电池4为车辆提供电池储能和电能输出,A组储能电池3和B组储能电池4根据剩余电量情况,通过人工或自动来回切换,可实现持续动力来源。
所述发电电机1线圈通电时,动力电机5输出扭矩,带动轮毂旋转,实现车辆行驶;外部扭矩带动发电电机1线圈做切割磁场,可实现感应电动势,输出感应电流。
所述发电电机1与车辆轮毂采用一体结构。
本发明的工作原理:本方案主要由三个部分组成,第一是为储能电池提供充电的带发电功能轮毂发电电机,第二个是两套独立的储能电池电池组,第三个是为储能电池充电提供恒流稳压的变频器。
该技术方案是采用2组电机系统:一组是通过储能电池提供电源,向动力电机提供动力来源,驱动动力电机,提供旋转扭矩,为车辆正常行驶的驱动动力电机系统。一组是通过轮毂发电电机,经车辆正常行驶带动的轮毂旋转发电,经逆变器进行恒流稳压,向B组储能电池组发电储能。该技术的基本原理是利用电机的的双向特性。电机线圈通电时,电机输出扭矩,带动车轮旋转,实现车辆行驶;外部扭矩带动电机线圈做切割磁场,可实现感应电动势,输出感应电流。
当发电端轮毂发电电机在车辆行驶的时候,利用车辆行驶的动力,经车轮带动轮毂发电电机旋转。采用一体结构的轮毂发电电机,并不会增加额外的阻力,不会导致额外机械功率损失。轮毂发电电机中的线圈通过切割电机内部磁场,产生感应电动势,经过电源线经逆变器整流稳压,对B组储能电池组进行充电,为电动车电池提供持续电力来源。
当车辆电源电力不足时,可以通多手动或自动控制对电源端进行切换,双电源轮流切换,实现边充边放,从而增加车辆的行驶里程,实现功率最大利用,实现节能的目的。
在车辆需要较大扭矩要求时,可通过手动或自动开关,实现双电机/多电机同时行驶,实现起步、爬坡、负重等特殊工况需求,双电机动力匹配可减少单电机大扭矩、大电流的能量损耗,做到动力最佳均衡匹配,减少车辆在特殊工况条件下对能耗的极限需求,增加电池的续航里程
本发明技术方案不限于轮毂电机结构,可实现多个轮毂电机应用,可通过车辆的结构情况,整车功耗情况,实现1个动力电机+N个发电电机方案,通过对车辆实际输出功率匹配合适的发电轮毂电机,在不增加额外能耗损失的情况,经济合理匹配,实现发电功率最大化。
实施例:
如图2所示的实施例中,发电电机一6、发电电机二8、发电电机三11、发电电机四13通过车辆正常行驶提供的动力带动轮毂旋转,轮毂电机内部线圈通过切割磁场感应线,产生感应电动势发电,向逆变器一7输入电源,逆变器一7将发电电机一6、发电电机二8、发电电机三11、发电电机四13的输出电源进行恒流稳压并向A组储能电池一9,B组储能电池一10进行充电,A组储能电池一9为车辆提供电池储能和能里输出﹔A组储能电池一9,B组储能电池一10根据剩余电里情况,通过人工或自动来回切换,可实现持续动万来源。动力电机一12通过逆变器一7输入电源,为车辆提供行驶动力。
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。
Claims (4)
1.一种双源动力电机的驱动系统,包括发电电机(1)、逆变器(2)、A组储能电池(3)、B组储能电池(4)、动力电机(5),其特征在于:所述发电电机(1)通过支架安装在车辆的轮毂内侧,所述发电电机(1)通过车辆正常行驶时提供的动力带动轮毂旋转,轮毂处的发电电机(1)内部线圈通过切割磁感线产生感应电动势发电,并通过发电电机(1)与逆变器(2)间的连接导线向逆变器(2)传输电能,所述逆变器(2)通过传输导线分别连接有A组储能电池(3)和B组储能电池(4),通过所述逆变器(2)恒流稳压后的电能分别输入进所述A组储能电池(3)和B组储能电池(4)实现A组储能电池(3)和B组储能电池(4)的充电;
所述逆变器(2)通过输电导线连接有动力电机(5),所述动力电机(5)通过逆变器(2)输入电能,为车辆提供行驶动力。
2.根据权利要求1所述的一种双源动力电机的驱动系统,其特征在于:所述A组储能电池(3)和B组储能电池(4)为车辆提供电池储能和电能输出,A组储能电池(3)和B组储能电池(4)根据剩余电量情况,通过人工或自动来回切换,可实现持续动力来源。
3.根据权利要求1所述的一种双源动力电机的驱动系统,其特征在于:所述发电电机(1)线圈通电时,动力电机(5)输出扭矩,带动轮毂旋转,实现车辆行驶;外部扭矩带动发电电机(1)线圈做切割磁场,可实现感应电动势,输出感应电流。
4.根据权利要求1所述的一种双源动力电机的驱动系统,其特征在于:所述发电电机(1)与车辆轮毂采用一体结构。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111286028.2A CN114069962A (zh) | 2021-11-02 | 2021-11-02 | 一种双源动力电机的驱动系统 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111286028.2A CN114069962A (zh) | 2021-11-02 | 2021-11-02 | 一种双源动力电机的驱动系统 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN114069962A true CN114069962A (zh) | 2022-02-18 |
Family
ID=80236414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111286028.2A Pending CN114069962A (zh) | 2021-11-02 | 2021-11-02 | 一种双源动力电机的驱动系统 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114069962A (zh) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2196045Y (zh) * | 1994-06-28 | 1995-05-03 | 毕鉴穆 | 电动汽车的传动及能源回收机构 |
CN102377321A (zh) * | 2010-08-16 | 2012-03-14 | 杨联岛 | 自动发电式电动车 |
CN102390281A (zh) * | 2011-09-30 | 2012-03-28 | 陈朝华 | 一种利用行驶动能发电的电动车 |
CN204161136U (zh) * | 2014-09-30 | 2015-02-18 | 梁连建 | 一种电动车 |
CN210041607U (zh) * | 2019-08-16 | 2020-02-07 | 杭州琢源汽车科技有限公司 | 一种电动汽车轮毂发电机 |
CN112918279A (zh) * | 2019-12-07 | 2021-06-08 | 陶海生 | 一种车内双发动机发电直接电驱动混动车 |
-
2021
- 2021-11-02 CN CN202111286028.2A patent/CN114069962A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2196045Y (zh) * | 1994-06-28 | 1995-05-03 | 毕鉴穆 | 电动汽车的传动及能源回收机构 |
CN102377321A (zh) * | 2010-08-16 | 2012-03-14 | 杨联岛 | 自动发电式电动车 |
CN102390281A (zh) * | 2011-09-30 | 2012-03-28 | 陈朝华 | 一种利用行驶动能发电的电动车 |
CN204161136U (zh) * | 2014-09-30 | 2015-02-18 | 梁连建 | 一种电动车 |
CN210041607U (zh) * | 2019-08-16 | 2020-02-07 | 杭州琢源汽车科技有限公司 | 一种电动汽车轮毂发电机 |
CN112918279A (zh) * | 2019-12-07 | 2021-06-08 | 陶海生 | 一种车内双发动机发电直接电驱动混动车 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102130626B (zh) | 改进的具有集成电池充电器的可变电压转换器 | |
CN201703265U (zh) | 电动车用太阳能电驱动系统 | |
CN101867209A (zh) | 电动车的自充电方法及自充电系统以及自充电电动车 | |
KR20130090678A (ko) | 전기 자동차의 배터리 충전 장치 및 이를 포함한 전기 자동차 | |
US8967305B2 (en) | Drive system for a motor vehicle and method therefor | |
CN108437827A (zh) | 一种纯电动动力系统 | |
CN103538482A (zh) | 一种可助力及回收制动能量的汽车起停系统 | |
CN108688457A (zh) | 一种混合动力驱动系统 | |
CN101624021A (zh) | 一种纯电动汽车12v蓄电池工作系统及管理方法 | |
CN101826746B (zh) | 一种光伏汽车供电控制方法及系统 | |
CN114069962A (zh) | 一种双源动力电机的驱动系统 | |
CN110053517A (zh) | 一种电动车用双电源管控系统 | |
CN105128676A (zh) | 一种车载双电机取力供电系统及方法 | |
CN212529331U (zh) | 一种增程式电动汽车电源系统 | |
CN214647707U (zh) | 一种电动车用双电池控制模块 | |
CN103978907A (zh) | 一种新能源电动车自动发电充电节能系统及其制作方法 | |
CN210126457U (zh) | 一种电动车用双电源管控系统 | |
CN203543701U (zh) | 太阳能电动车 | |
CN210111897U (zh) | 新能源齿轨车变频驱动系统 | |
CN209767383U (zh) | 一种带双向dc-dc变换器的变桨系统 | |
CN208747488U (zh) | 一种优化增程式起重机结构 | |
CN208216514U (zh) | 一种纯电动动力系统 | |
CN202896775U (zh) | 一种增程式电动三轮车 | |
CN111532149A (zh) | 一种增程式电动汽车电源系统及其配置方法 | |
CN201092256Y (zh) | 一种四轮驱动电动车 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |