WO2019085456A1 - 充电连接器，充电装置以及套件和充电方法 - Google Patents

充电连接器，充电装置以及套件和充电方法 Download PDF

Info

Publication number
WO2019085456A1
WO2019085456A1 PCT/CN2018/089146 CN2018089146W WO2019085456A1 WO 2019085456 A1 WO2019085456 A1 WO 2019085456A1 CN 2018089146 W CN2018089146 W CN 2018089146W WO 2019085456 A1 WO2019085456 A1 WO 2019085456A1
Authority
WO
WIPO (PCT)
Prior art keywords
charging
connection
sub
series
conductive sheet
Prior art date
Application number
PCT/CN2018/089146
Other languages
English (en)
French (fr)
Inventor
魏涛
何旭
Original Assignee
蔚来汽车有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 蔚来汽车有限公司 filed Critical 蔚来汽车有限公司
Priority to EP18873331.5A priority Critical patent/EP3705337A4/en
Publication of WO2019085456A1 publication Critical patent/WO2019085456A1/zh

Links

Images

Classifications

    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/22—Balancing the charge of battery modules
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/40—Problem solutions or means not otherwise provided for related to technical updates when adding new parts or software
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • H01R11/281—End pieces consisting of a ferrule or sleeve for connections to batteries
    • H01R11/288—Interconnections between 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between 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
    • Y02T10/70—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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to the field of new energy vehicle battery pack charging, and more particularly to a method and related apparatus for charging a new energy vehicle power battery pack, particularly a high voltage battery pack.
  • a battery pack particularly a high voltage battery pack (e.g., 1000V or higher), is typically comprised of a plurality of sub-batteries in series, which in turn includes a plurality of battery cells.
  • the voltage of the battery pack is equal to the product of the voltage of the single cell and the number of series connections.
  • the battery pack is designed with one or more intermediate connectors or intermediate switches (also commonly referred to as service switches) according to actual conditions and usage requirements.
  • the intermediate connector is taken out, the entire battery pack is divided into a plurality of lower voltage sub-battery groups in series, and the entire battery pack is electrically cut off, so that the battery pack has no voltage output at the positive and negative poles, increasing the entire battery pack at Security during maintenance.
  • the voltage design of the battery pack considers the operating voltage range of the electrical actuators on the one hand, and considers the cable current carrying capacity, insulation capability and overall system weight used throughout the electrical system. In general, the higher the voltage of the battery pack, the higher the insulation capacity of the supporting electrical system, and the lower the current carrying capacity of the cable and the weight of the entire system. Therefore, high power battery packs generally use high voltage systems.
  • one charging method is to charge the entire battery pack after connecting a plurality of charging circuits in series.
  • the output voltage of each charging circuit needs to be balanced and equal to ensure stable operation of the charging circuit.
  • the advantage of this method is that the operation is simple and the charging time is short; the disadvantage is that the charging circuit may cause inconsistency of the output voltage due to the inconsistent working point, thereby affecting the efficiency, life and safety of the charging circuit.
  • Another method of charging is to charge the sub-battery separately using a charging circuit suitable for the sub-battery. When charging, the charging circuit is used to charge the sub-batteries one by one.
  • the method has the advantages that the charging circuit has a low charging voltage, the device cost is low, the procurement is easy, and the circuit is mature; the disadvantage is that the charging time is long and the manual operation is complicated.
  • the present invention provides a high voltage battery pack charging method and apparatus that is stable, reliable, and simple to operate.
  • a charging connector for a new energy vehicle battery pack including a plurality of sub-battery packs, the charging connector comprising:
  • connection plug in communication with the connection wire, the connection plug having a first connection terminal and a second connection terminal in communication with the connection wire, the connection plug being connectable between adjacent two sub-battery groups, such that The adjacent two sub-battery groups are electrically connected to each other and to the connecting wires.
  • a charging apparatus for a battery pack of a new energy vehicle comprising: a plurality of charging circuits connected in series, wherein at least two of the plurality of charging circuits connected in series are adjacent to each other
  • a charging connector according to an embodiment of the present invention is provided at a connection point therebetween.
  • kit for a new energy vehicle battery pack and charging device comprising:
  • a battery pack comprising a plurality of sub-batteries connected in series;
  • a charging device comprising a plurality of charging circuits connected in series corresponding to the plurality of series connected sub-battery groups, wherein a connection point between at least two adjacent charging circuits of the series of plurality of charging circuits is provided according to
  • the connection plug of the charging connector is connected between the corresponding two sub-battery packs.
  • a method of charging a new energy vehicle battery pack including a plurality of sub-batteries connected in series, the method comprising:
  • the charging device and method according to an embodiment of the present invention have high charging efficiency and stable performance.
  • FIG. 1 shows a schematic diagram of a charging circuit according to an embodiment
  • FIG. 2 shows a diagram of an intermediate switch socket in accordance with an embodiment
  • FIG. 3 shows a top side view of a charging connector in accordance with an embodiment
  • Figure 4 shows a bottom side view of a charging connector in accordance with an embodiment
  • Figure 5 shows an exploded view of the charging connector according to the first embodiment
  • Figure 6 shows an exploded view of the charging connector according to the second embodiment
  • Fig. 7 shows an exploded view of the charging connector according to the third embodiment.
  • top, bottom, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined with respect to the configurations shown in the respective drawings, which are Relative concepts, so it is possible to change accordingly according to their different locations and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.
  • the new energy vehicle power battery pack includes a plurality of sub-batteries 11, 12, 13 connected in series.
  • Each of the sub-batteries includes battery cells 111, 112 connected in series, and intermediate switches may be disposed between the sub-batteries, and the intermediate switches may include intermediate switch sockets 15, 16 and intermediate switch plugs (removed during charging).
  • the intermediate switch plugs are installed in the intermediate switch sockets 15, 16 under normal conditions such that the sub-batteries 11, 12, 13 are connected in series with each other and are removed when the battery pack is inspected or repaired.
  • a plurality of charging circuits 21, 22, 23 connected in series corresponding to the plurality of sub-battery groups 11, 12, 13 connected in series are employed.
  • connecting the two poles 20, 24 of the plurality of charging circuits connected in series to the two poles 10, 14 of the plurality of series connected sub-battery; and connecting the connection points 25, 26 of the adjacent charging circuits to the corresponding adjacent sub-cells Between the groups, that is, between the sub-batteries 11 and 12 and between the sub-batteries 12 and 13. It should be understood that only three sub-batteries and three charging circuits are shown by way of example in the figures, and in other embodiments, the number of sub-batteries and charging circuits may vary.
  • the charging connectors 31, 32 are coupled to the intermediate switch sockets 15, 16 between corresponding adjacent sub-battery sets, thereby enabling adjacent The connection point of the charging circuit is connected between the corresponding adjacent sub-battery packs.
  • the charging connectors 31, 32 include a connecting wire 312 leading from a charging circuit connection point and a connecting plug 311 combined with the connecting wire 312.
  • the series potential point of the sub-battery and the charging circuit series potential point of the charging circuit are connected by wires, so that the series potential point of the sub-battery and the charging circuit are connected in series, thereby ensuring that each The output voltages of the charging circuits are balanced and equal to ensure stable operation of the charging circuit. Furthermore, the present invention achieves the above functions by means of an intermediate switch that the battery pack itself has, making the connection during charging more convenient to operate.
  • the charging connector for the battery pack of the new energy vehicle includes: a connecting wire 312 connected to a connection point 25 between two adjacent charging circuits 21, 22; a connecting plug 311 connected to the connecting wire 312, connected
  • the plug 311 has a first connection terminal 611 and a second connection terminal 612 that are in communication with the connection wires 312, and the connection plug 311 can be connected between the adjacent two sub-battery groups 11, 12 such that the adjacent two sub-batteries 11 are 12 are electrically connected to each other and to the connecting wire 312.
  • the connection plug 311 is connected to the intermediate switch socket 15 between the adjacent two sub-battery packs 11, 12. As shown in FIG.
  • the intermediate switch socket 15 has features for mating with the first connection terminal and the second connection terminal, such as a pair of opposite reed slots 151 and 152, the slots and the first connection terminal and the second The connection terminals correspond, for example, the slots 151 and 152 may be disposed in parallel.
  • the intermediate switch socket 15 also has other features for engaging the connection plug 311.
  • the connection plug 311 is connected to other forms of wires between adjacent two sub-battery sets 11, 12.
  • a first embodiment of a charging connector is described in connection with Figures 3 - 5, which may include a housing 41, a conductive strip 61 in the housing 41, an in-line mounting member 42 that holds the conductive tab 61 in place, and a The operating handle 43 is connected to the corresponding intermediate switch socket.
  • the first connection terminal 611 and the second connection terminal 612 are exposed at the first end of the housing 41.
  • the conductive sheet 61 may have a zigzag shape, and the zigzag conductive sheet is formed by bending the opposite ends 611, 612 of the metal sheet in opposite directions, and the bent ends of the bent metal sheets 611, 612 constitute the first connecting terminal and
  • the second connecting terminal has a connecting hole 62 in the middle of the metal piece and is disposed in the middle of the housing of the connecting plug.
  • the connecting wire 312 has a wire main body 81 and a wire connecting terminal 82.
  • the wire connection terminal 82 has a flat endped hole structure, and the bolt 71 can sequentially pass through the bushing 72, the wire connection terminal 82 and the connection hole 62 in the middle of the conductive sheet 61, and are received by the nut 73, thereby Connected to the conductive sheet 61. Subsequently, the conductive sheet with the connecting wires can be inserted into the notch in the housing and held in place by the insole fixing member 42 such that both ends of the conductive sheet are respectively exposed and constitute the first connecting terminal 611 and the second connecting terminal 612. . Further, the bottom cover 411 of the other end of the casing 41 has an opening, and the geland 51 is fitted over the wire main body 81 and fixed to the bottom cover 411 having the opening.
  • the Gülen 51 can be made of an insulating material, such as plastic, which secures the connecting wires to the housing and provides insulation between the wire terminals and externally accessible parts.
  • FIG. 6 shows a second embodiment of an electrical connector.
  • the conductive sheet of FIG. 5 includes a first V-shaped conductive sheet 63 and a second V-shaped conductive sheet 64, a first V-shaped conductive sheet 63 and a second V-shape, as compared with the embodiment of FIGS. 2-4.
  • the conductive sheet 64 is disposed in a corresponding slot of the housing such that one end 631 of the first V-shaped conductive sheet 63 constitutes a first connection terminal, and one end 641 of the second V-shaped conductive sheet 64 constitutes a second connection terminal, the first V
  • the other ends of the word-shaped conductive sheets 63 and the second V-shaped conductive sheets 64 are stacked and connected to the connecting wires 312.
  • connection wires 312 are also bolted to the two conductive sheets, and the two conductive sheets and the connection are made The wires are connected together.
  • Fig. 7 shows a third embodiment of an electrical connector in which a U-shaped conductive strip 66 is employed.
  • the U-shaped conductive sheet 66 is formed by bending both ends of the metal sheet in the same direction, and the two ends 661, 662 of the bent metal sheet constitute the first connection terminal and the second connection terminal, and the middle portion of the metal piece has a connection hole 67, and It is arranged in the middle of the housing of the connecting plug and is connected to the connecting wire.
  • the two ends 661, 662 of the U conductive sheet respectively constitute a first connection terminal and a second connection terminal, and the threaded first end 741 of the contact bolt 74 and the nut 73 cooperate to connect to the U.
  • the middle portion of the type of conductive sheet 66 is connected to the hole 67, and the other end 742 of the contact bolt 74 is connected to the connecting wire 312.
  • the other end 742 of the contact bolt 74 may be connected to the connecting wire 312 by crimping, riveting or welding.
  • Another aspect of the present invention provides a charging device for a battery pack of a new energy vehicle, comprising: a plurality of charging circuits connected in series, and a connection point between at least two adjacent charging circuits of the plurality of charging circuits connected in series There are charging connectors in accordance with various embodiments.
  • kits for a new energy vehicle battery pack and a charging device comprising: a battery pack including a plurality of sub-batteries connected in series; and a charging device including a sub-battery unit connected in series with the plurality Corresponding series charging circuits, a charging connector according to various embodiments, a connection plug connection of the charging connector is provided at a connection point between at least two adjacent charging circuits of the plurality of charging circuits connected in series To the corresponding two sub-batteries.
  • an intermediate switch is disposed between the plurality of battery cells connected in series, the intermediate switch has an intermediate switch plug and an intermediate switch socket, and the charging plug of the charging connector replaces the intermediate switch plug during charging To the corresponding intermediate switch socket.
  • the charging connector of the present invention can be obtained by simply modifying the existing intermediate switch plug, which improves the charging efficiency and charging stability of the series high voltage battery pack.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种用于新能源车电池组的充电连接器，电池组包括多个子电池组（11,12,13），所述充电连接器（31,32）包括：连接导线（312），所述连接导线（312）连接至相邻的两个充电电路之间的连接点（25,26）；与所述连接导线（312）连通的连接插头（311），所述连接插头（311）具有与所述连接导线（312）连通的第一连接端子（611）和第二连接端子（612），所述连接插头（311）能够连接至相邻的两个子电池组（11,12）之间，使得所述相邻的两个子电池组（11,12）相互电连接并与所述连接导线（312）电连接。还公开了包括该充电连接器的充电装置以及套件和充电方法。所述充电连接器（31，32）仅需对现有的中间开关插头进行简单改造便可获得，其改善串联高压电池组的充电效率以及充电稳定性。

Description

充电连接器，充电装置以及套件和充电方法 技术领域
本发明涉及新能源车电池组充电领域，更具体地，本发明涉及一种为新能源车动力电池组(尤其是高压电池组)充电的方法以及相关装置。
背景技术
电池组，尤其是高压电池组(如1000V或更高)一般是由多个子电池组串联组成，而子电池组继而包括多个电池单元。电池组的电压等于单节电池的电压与串联数目的乘积。设计时，电池组根据实际情况和使用需要，设计有一个或者多个中间连接器或中间开关(一般也称为维修开关)。当此中间连接器取出时，整个电池组按串联分割成多个较低电压的子电池组，同时将整个电池组的电气切断，使得电池组正负极无电压输出，增加了整个电池组在维护期间的安全性。
电池组的电压设计一方面考虑电气执行设备的运行电压范围，同时需要考虑整个电气系统使用的线缆载流能力、绝缘能力及整个系统的重量。一般说来，电池组的电压越高，配套使用的电气系统绝缘能力越高，而线缆的载流能力及整个系统重量越低。所以，高功率电池组一般使用高电压系统。
在电池组的充电电压需求大于单个充电电路的电压情况下，一种充电方法是将多个充电电路进行串联后，对整个电池组进行充电。而多个充电电路串联时，每个充电电路的输出电压需要平衡并相等，确保充电电路工作稳定。该方法优点是操作简单充电时间短；缺点是充电电路由于工作点不一致可能导致输出电压的不一致，从而影响充电电路的效率,寿命和安全性。另一种充电方法是使用适合子电池组的充电电路分别对子电池组充电。充电时，使用充电电路对子电池组逐一完成充电。该方法优点是充电电路的充电电压较低，器件成本较低，采购容易，电路成熟；缺点是充电时间长，人工操作复杂。
发明内容
本发明的目的在于解决或至少缓解现有技术中所存在的问题。
根据一方面，本发明提供了一种稳定可靠且操作简单的高压电池组充电方 法和设备。
一方面，提供了一种用于新能源车电池组的充电连接器，所述电池组包括多个子电池组，所述充电连接器包括：
连接导线，所述连接导线连接至相邻的两个充电电路之间的连接点；
与所述连接导线连通的连接插头，所述连接插头具有与所述连接导线连通的第一连接端子和第二连接端子，所述连接插头能够连接至相邻的两个子电池组之间，使得所述相邻的两个子电池组相互电连接并与所述连接导线电连接。
另一方面，提供了一种用于新能源车电池组的充电装置，其包括：串联的多个充电电路，其特征在于，所述串联的多个充电电路中至少两个相邻充电电路之间的连接点处设有根据本发明的实施例的充电连接器。
另一方面，提供了一种新能源车电池组与充电装置的套件，其包括：
电池组，其包括多个串联的子电池组；
充电装置，其包括与所述多个串联的子电池组对应的串联的多个充电电路，所述串联的多个充电电路中的至少两个相邻充电电路之间的连接点处设有根据本发明的实施例的充电连接器，所述充电连接器的连接插头连接至相应的两个子电池组之间。
再一方面，提供了一种给新能源车电池组充电的方法，所述电池组包括多个串联的子电池组，所述方法包括：
提供与所述多个串联的子电池组对应的串联的多个充电电路；
将所述串联的多个充电电路的两极连接至所述多个串联的子电池组的两极；
将相邻充电电路的连接点连接至对应的相邻子电池组之间。
根据本发明的实施例的充电装置和方法充电效率高且性能稳定。
附图说明
通过结合附图来阅读以下详细描述，本发明的原理将变得更显而易见，其中：
图1示出了根据实施例的充电电路的示意图；
图2示出了根据实施例的中间开关插座的示图；
图3示出了根据实施例的充电连接器顶侧视图；
图4示出了根据实施例的充电连接器底侧视图；
图5示出了根据第一实施例的充电连接器分解图；
图6示出了根据第二实施例的充电连接器分解图；以及
图7示出了根据第三实施例的充电连接器分解图。
具体实施方式
容易理解，根据本发明的技术方案，在不变更本发明实质精神下，本领域的一般技术人员可以提出可相互替换的多种结构方式以及实现方式。因此，以下具体实施方式以及附图仅是对本发明的技术方案的示例性说明，而不应当视为本发明的全部或者视为对本发明技术方案的限定或限制。
在本说明书中提到或者可能提到的上、下、左、右、前、后、正面、背面、顶部、底部等方位用语是相对于各附图中所示的构造进行定义的，它们是相对的概念，因此有可能会根据其所处不同位置、不同使用状态而进行相应地变化。所以，也不应当将这些或者其它的方位用语解释为限制性用语。
参考图1，其示出了根据本发明的充电方法的实施例的电路图。新能源车动力电池组包括多个串联的子电池组11,12,13。各个子电池组中包括串联的电池单元111,112，子电池组之间可设置有中间开关，中间开关可包括中间开关插座15,16以及中间开关插头(充电时被去除)。中间开关插头在正常状态下安装在中间开关插座15,16中，使得子电池组11,12,13相互串联，而在对电池组进行检查或维修时去除。由于子电池组11,12,13串联在一起时具有高的电压，例如1000V，采用单个充电电路是困难的且高成本的。因此，在实施例中采用了与多个串联的子电池组11,12,13对应的串联的多个充电电路21,22,23。在充电时，将串联的多个充电电路的两极20,24连接至多个串联的子电池组的两极10,14；并且将相邻充电电路的连接点25,26连接至对应的相邻子电池组之间，即子电池组11和12之间以及子电池组12和13之间。应当理解，图中仅示例地示出了三个子电池组和三个充电电路，在其他实施例中，子电池组和充电电路的数量可改变。
在一些实施例中，利用下文将详述的根据本发明的实施例的充电连接器31,32连接至对应的相邻子电池组之间的中间开关插座15,16上，从而实现将相邻充电电路的连接点连接至对应的相邻子电池组之间。充电连接器31,32包括从充电电路连接点引出的连接导线312和与连接导线312结合的连接插头311。通过根据本发明的方法，将子电池组的串联电位点和充电电路的充电电路串联电位点 通过导线进行连接，使得子电池组的串联电位点和充电电路串联电位点共点，由此保证每个充电电路的输出电压平衡并相等，确保充电电路工作稳定。此外，本发明借助于电池组本身具有的中间开关来实现上述功能，使得充电过程中的连接操作起来更方便。
接着结合图2-5来描述充电连接器以及相应的中间开关插座的具体结构。用于新能源车电池组的充电连接器包括：连接导线312，连接导线312连接至相邻的两个充电电路21,22之间的连接点25；与连接导线312连通的连接插头311，连接插头311具有与连接导线312连通的第一连接端子611和第二连接端子612，连接插头311能够连接至相邻的两个子电池组11,12之间，使得相邻的两个子电池组11,12相互电连接并与连接导线312电连接。在一些实施例中，连接插头311连接至相邻的两个子电池组11,12之间的中间开关插座15上。如图2所示，中间开关插座15具有与第一连接端子和第二连接端子配合的特征，如一对相对的带簧片的插槽151和152，这些插槽与第一连接端子以及第二连接端子对应，例如插槽151和152可平行地设置。此外，中间开关插座15还具有用于与连接插头311接合的其他特征。在备选的实施例中，连接插头311连接至相邻的两个子电池组11,12之间的其他形式的导线上。
结合图3-图5来描述充电连接器的第一实施例，连接插头311可包括壳体41，壳体41中的导电片61，将导电片61保持就位的内嵌固定件42以及促使连接插头311与相应中间开关插座配合的操作手柄43。在壳体41的第一端处第一连接端子611和第二连接端子612露出。
在一些实施例中，导电片61可采用Z字形状，Z字型导电片由金属片两端611,612向相反方向折弯形成，经折弯的金属片两端611,612构成所述第一连接端子和第二连接端子，金属片的中部具有连接孔62，并布置在连接插头的壳体中部。连接导线312具有导线主体81和导线连接端子82。在该实施例中，导线连接端子82具有前端扁平的带孔结构，螺栓71可依次穿过衬套72，导线连接端子82和导电片61中部的连接孔62，并由螺母73接收，由此连接至导电片61。随后，带有连接导线的导电片可插入壳体中的槽口中，并由内嵌固定件42保持就位，使得导电片的两端分别露出并构成第一连接端子611和第二连接端子612。此外，壳体41的另一端的底盖411具有开口，将葛兰51套在导线主体81上并 固定至具有开口的底盖411上。葛兰51可由绝缘材料，如塑料制成，其将连接导线固定至壳体上并实现导线端子与外部可接触部位的绝缘
图6示出了电连接器的第二实施例。与图2-4的实施例相比，图5中的导电片包括第一V字型导电片63和第二V字型导电片64，第一V字型导电片63和第二V字型导电片64布置在壳体的对应槽口中使得第一V字型导电片63的一端631构成第一连接端子，并且第二V字型导电片64的一端641构成第二连接端子，第一V字型导电片63和第二V字型导电片64的另一端相叠并与连接导线312连接。更具体地，第一V字型导电片63和第二V字型导电片64的另一端具有连接孔65，连接导线312同样通过螺栓连接至两个导电片，并使两个导电片和连接导线连接在一起。
图7示出了电连接器的第三实施例，在该实施例中采用了U字型导电片66。U字型导电片66由金属片两端向同方向折弯形成，经折弯的金属片两端661,662构成所述第一连接端子和第二连接端子，金属片的中部具有连接孔67，且布置在连接插头的壳体中部，并与连接导线连接。在导电片66插入壳体的槽中时，U导电片的两端661,662分别构成第一连接端子和第二连接端子，接触螺栓74的带螺纹的第一端741和螺母73配合以连接至U型导电片66的中部连接孔67，接触螺栓74的另一端742与连接导线312连接。接触螺栓74的另一端742可以通过压接，铆接或焊接等方式与连接导线312连接。
本发明另一方面提供一种用于新能源车电池组的充电装置，其包括：串联的多个充电电路，串联的多个充电电路中至少两个相邻充电电路之间的连接点处设有根据各个实施例的充电连接器。
本发明另一方面提供一种新能源车电池组与充电装置的套件，其包括：电池组，其包括多个串联的子电池组；充电装置，其包括与所述多个串联的子电池组对应的串联的多个充电电路，串联的多个充电电路中的至少两个相邻充电电路之间的连接点处设有根据各个实施例的充电连接器，所述充电连接器的连接插头连接至相应的两个子电池组之间。优选地，多个串联的子电池组之间设置有中间开关，所述中间开关具有中间开关插头和中间开关插座，在充电过程中，所述充电连接器的连接插头替代所述中间开关插头连接至对应的中间开关插座上。
本发明的充电连接器仅需对现有的中间开关插头进行简单改造便可获得， 其改善串联高压电池组的充电效率以及充电稳定性。
应当理解的是，所有以上的优选实施例都是示例性而非限制性的，本领域技术人员在本发明的构思下对以上描述的具体实施例做出的各种改型或变形都应在本发明的法律保护范围内。

Claims (14)

  1. 一种用于新能源车电池组的充电连接器，所述电池组包括多个子电池组，其特征在于，所述充电连接器包括：
    连接导线，所述连接导线连接至相邻的两个充电电路之间的连接点；
    与所述连接导线连通的连接插头，所述连接插头具有与所述连接导线连通的第一连接端子和第二连接端子，所述连接插头能够连接至相邻的两个子电池组之间，使得所述相邻的两个子电池组相互电连接并与所述连接导线电连接。
  2. 根据权利要求1所述的充电连接器，其特征在于，所述连接插头连接至所述相邻的两个子电池组之间的中间开关插座上。
  3. 根据权利要求2所述的充电连接器，其特征在于，所述中间开关插座具有与所述连接插头的第一连接端子和第二连接端子对应的一对带簧片的插槽。
  4. 根据权利要求1所述的充电连接器，其特征在于，所述连接插头包括壳体，所述壳体中的导电片以及将所述导电片保持就位的内嵌固定件。
  5. 根据权利要求4所述的充电连接器，其特征在于，所述导电片的两端构成第一连接端子和第二连接端子，所述连接导线与所述导电片的中部连接。
  6. 根据权利要求5所述的充电连接器，其特征在于，所述导电片呈U字型，所述U字型导电片由金属片两端向同方向折弯形成，经折弯的所述金属片两端构成所述第一连接端子和第二连接端子，金属片的中部布置在所述连接插头的壳体中部并与所述连接导线连接。
  7. 根据权利要求5所述的充电连接器，其特征在于，所述导电片呈Z字型，所述Z字型导电片由金属片两端向相反方向折弯形成，经折弯的所述金属片两端构成所述第一连接端子和第二连接端子，金属片的中部布置在所述连接插头的壳体中部并与所述连接导线连接。
  8. 根据权利要求4所述的充电连接器，其特征在于，所述导电片包括第一V字型导电片和第二V字型导电片，所述第一V字型导电片和第二V字型导电片布置在所述壳体的对应槽口中使得所述第一V字型导电片的一端构成所述第一连 接端子，并且所述第二V字型导电片的一端构成所述第二连接端子，所述第一V字型导电片和第二V字型导电片的另一端相叠并与所述连接导线连接。
  9. 根据权利要求4-8中任一项所述的充电连接器，其特征在于，所述导电片上具有连接孔，所述连接导线通过螺栓固定至所述导电片上。
  10. 一种用于新能源车电池组的充电装置，其包括：串联的多个充电电路，其特征在于，所述串联的多个充电电路中至少两个相邻充电电路之间的连接点处设有如权利要求1-9中任一项所述的充电连接器。
  11. 一种新能源车电池组与充电装置的套件，其包括：
    电池组，其包括多个串联的子电池组；
    充电装置，其包括与所述多个串联的子电池组对应的串联的多个充电电路，所述串联的多个充电电路中的至少两个相邻充电电路之间的连接点处设有如权利要求1-9中任一项所述的充电连接器，所述充电连接器的连接插头连接至相应的两个子电池组之间。
  12. 根据权利要求11所述的新能源车电池组与充电装置的套件，其特征在于，所述多个串联的子电池组之间设置有中间开关，所述中间开关具有中间开关插头和中间开关插座，在充电过程中，所述充电连接器的连接插头替代所述中间开关插头连接至对应的中间开关插座上。
  13. 一种给新能源车电池组充电的方法，所述电池组包括多个串联的子电池组，所述方法包括：
    提供与所述多个串联的子电池组对应的串联的多个充电电路；
    将所述串联的多个充电电路的两极连接至所述多个串联的子电池组的两极；
    将相邻充电电路的连接点连接至对应的相邻子电池组之间。
  14. 根据权利要求13所述的给电池组充电的方法，其特征在于，所述方法还包括：通过将如权利要求1-9中任一项所述的充电连接器连接至对应的相邻子电池组之间的中间开关插座，从而实现将相邻充电电路的连接点连接至对应的相邻子电池组之间。
PCT/CN2018/089146 2017-11-02 2018-05-31 充电连接器，充电装置以及套件和充电方法 WO2019085456A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18873331.5A EP3705337A4 (en) 2017-11-02 2018-05-31 CHARGING CONNECTOR, CHARGER, KIT AND PROCEDURE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711062281.3 2017-11-02
CN201711062281.3A CN107672475B (zh) 2017-11-02 2017-11-02 充电连接器，充电装置以及套件和充电方法

Publications (1)

Publication Number Publication Date
WO2019085456A1 true WO2019085456A1 (zh) 2019-05-09

Family

ID=61145449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/089146 WO2019085456A1 (zh) 2017-11-02 2018-05-31 充电连接器，充电装置以及套件和充电方法

Country Status (4)

Country Link
EP (1) EP3705337A4 (zh)
CN (1) CN107672475B (zh)
TW (1) TWI763862B (zh)
WO (1) WO2019085456A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108502812B (zh) * 2018-04-19 2023-08-18 浙江中力机械股份有限公司 叉车及其一体式电池箱
CN113097762B (zh) * 2021-03-31 2022-06-07 中航光电科技股份有限公司 一种与bdu集成的换电连接器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201100922Y (zh) * 2006-09-20 2008-08-13 上海中科大研究发展中心有限责任公司 电池组
CN103518303A (zh) * 2011-04-28 2014-01-15 丰田自动车株式会社 电池系统及其控制方法
EP3160790A1 (fr) * 2014-06-27 2017-05-03 Commissariat à l'Energie Atomique et aux Energies Alternatives Cable electrique a fils de terre
US20170240059A1 (en) * 2016-02-22 2017-08-24 Faraday&Future Inc. Integrated trailer hitch and jump start system
CN107294179A (zh) * 2017-08-09 2017-10-24 深圳遥米智能电子科技有限公司 电动车电池的供电组件、充电方法、系统，及电动车

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5703464A (en) * 1995-06-28 1997-12-30 Amerigon, Inc. Radio frequency energy management system
TW391572U (en) * 1998-11-16 2000-05-21 Delta Electronics Inc Safety power connector
JP4075260B2 (ja) * 1999-12-27 2008-04-16 ソニー株式会社 電池パック、電源装置並びに充電および放電方法
US6586909B1 (en) * 2001-12-21 2003-07-01 Ron Trepka Parallel battery charging device
CN201230222Y (zh) * 2008-07-18 2009-04-29 王玉石 串联蓄电池组在线均衡充电器
JP5784038B2 (ja) * 2010-11-25 2015-09-24 本田技研工業株式会社 電動車両の充電制御装置
CN102859837A (zh) * 2010-12-06 2013-01-02 科达汽车公司 电化学电池单元平衡电路和方法
EP2479059A1 (en) * 2011-01-19 2012-07-25 Power Research Electronics B.v. Battery charger for electric vehicles
EP2673182B1 (de) * 2011-02-07 2017-01-11 Energybus E.V. Modulares fahrzeugsystem, elektrofahrzeug und modul zur verbindung mit einem elektrofahrzeug
FR3003827B1 (fr) * 2013-03-28 2015-03-27 Renault Sa Systeme d'alimentation electrique d'un reseau de bord de vehicule automobile hybride
US9692189B2 (en) * 2013-10-12 2017-06-27 Shenzhen Skt Electrical Technology Co., Ltd. Safe socket and use thereof
DE102014202410A1 (de) * 2014-02-11 2015-08-13 Robert Bosch Gmbh Energieversorgungseinrichtung für ein elektrisch betreibbares Fahrzeug und Verfahren zum Laden
FR3029361B1 (fr) * 2014-11-28 2018-03-23 Aptiv Technologies Limited Dispositif de connexion electrique
CN105140996B (zh) * 2015-09-02 2018-05-18 国网上海市电力公司 一种锂离子电池组均衡管理系统及均衡控制方法
TWI572114B (zh) * 2015-12-23 2017-02-21 The cable and the battery module using the cable are fully balanced
CN207758582U (zh) * 2017-11-02 2018-08-24 蔚来汽车有限公司 充电连接器，充电装置以及套件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201100922Y (zh) * 2006-09-20 2008-08-13 上海中科大研究发展中心有限责任公司 电池组
CN103518303A (zh) * 2011-04-28 2014-01-15 丰田自动车株式会社 电池系统及其控制方法
EP3160790A1 (fr) * 2014-06-27 2017-05-03 Commissariat à l'Energie Atomique et aux Energies Alternatives Cable electrique a fils de terre
US20170240059A1 (en) * 2016-02-22 2017-08-24 Faraday&Future Inc. Integrated trailer hitch and jump start system
CN107294179A (zh) * 2017-08-09 2017-10-24 深圳遥米智能电子科技有限公司 电动车电池的供电组件、充电方法、系统，及电动车

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3705337A4 *

Also Published As

Publication number Publication date
EP3705337A4 (en) 2021-08-11
TWI763862B (zh) 2022-05-11
CN107672475A (zh) 2018-02-09
EP3705337A1 (en) 2020-09-09
CN107672475B (zh) 2021-11-23
TW201918395A (zh) 2019-05-16

Similar Documents

Publication Publication Date Title
CN107925025B (zh) 电池组及包含电池组的车辆
CN101401227B (zh) 一种软包装锂离子动力电池模块
CA2496092C (en) Battery pack
US6365297B1 (en) High-power bussing connection system for a battery pack
CN100382374C (zh) 蓄电池组件
US5378552A (en) Modular battery system comprising individual interconnected modules
KR100456857B1 (ko) 하이브리드 전기 차량의 전지 셀간 커넥팅 장치
US7785139B1 (en) Electrical outlet having grounds-out receptacles and method
KR101803961B1 (ko) 전지셀 상호연결 및 전압 센싱 어셈블리, 및 전지모듈
US7275967B1 (en) Portable power supply system and connectors therefor
JP5501763B2 (ja) 等分配型母線、及びそれを使用する中または大型バッテリーパック
CN106935780B (zh) 电池模块和电池组
CA2144205A1 (en) Watthour Meter Mounting Apparatus with Improved Electrical Connections
TW201429031A (zh) 具有匯流排條組裝的電池模組及包含此電池模組之電池組
US10230081B2 (en) Voltage-protected producible motor vehicle battery
CN107346811B (zh) 低压动力电池包
CN110199444B (zh) 用于电池系统的手动维护断接器
JP6571621B2 (ja) 電池モジュール
WO2019085456A1 (zh) 充电连接器，充电装置以及套件和充电方法
KR20090007337A (ko) 소프트 패키지 리튬이온 파워 배터리 모듈
KR20150115251A (ko) 중앙 프레임 타입의 2 셀 배터리 모듈을 포함하는 배터리 모듈 어레이
US3625774A (en) Battery-mounted receptacle means
CN207758582U (zh) 充电连接器，充电装置以及套件
CN106450071B (zh) 电池包及其与电动工具的组合和连接它们的方法
KR102173866B1 (ko) 슈퍼 캐패시터를 적용한 충방전모듈

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018873331

Country of ref document: EP

Effective date: 20200602