CN117317625A - 车辆电源装置 - Google Patents

车辆电源装置 Download PDF

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CN117317625A
CN117317625A CN202310422326.2A CN202310422326A CN117317625A CN 117317625 A CN117317625 A CN 117317625A CN 202310422326 A CN202310422326 A CN 202310422326A CN 117317625 A CN117317625 A CN 117317625A
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connector
bus bar
fastening portion
housing
power supply
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天本有希
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Toyota Motor Corp
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    • H—ELECTRICITY
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    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B60L53/14—Conductive energy transfer
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    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
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    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
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    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B60L2210/12—Buck converters
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    • 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
    • B60L2210/00—Converter types
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    • B60L2210/14—Boost converters
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    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
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    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
    • H01R35/02—Flexible line connectors without frictional contact members
    • 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
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    • 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
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Abstract

车辆电源装置具备设备和DC连接器。设备配置在连向电动车辆的DC接入口的电气路径上。DC连接器配置在上述电气路径上。DC连接器包含安装在设备的壳体上的第一连接器。第一连接器包含配置在壳体的内部的端子和设置在端子的前端的汇流条紧固部。设备包含汇流条，该汇流条配置在壳体的内部，具有与设备的构成部件连接的一端。汇流条包含：连接器紧固部，其经由紧固件而与汇流条紧固部紧固；以及金属制的Z型弹簧，其介存于汇流条的另一端与连接器紧固部之间，或者，在汇流条的另一端侧的端部处介存于汇流条的中途，且沿平行于另一端侧的端部处的汇流条的延伸方向的方向伸缩。

Description

车辆电源装置
技术领域
本公开涉及一种为了设备之间的连接而使用DC连接器的车辆电源装置。
背景技术
日本特开2020-087580公开了一种用于电池电动汽车等电动车辆中的电性连接的连接器。
发明内容
在将电动车辆的系统电压高压化为800V等的情况下，为了耐受热上升，要求进行加粗电线等DC连接器的体型增大。DC连接器的一方的连接器(第一连接器)安装在车辆电源装置所包含的设备的壳体中，但该壳体的内部空间有限。
关于上述壳体内的第一连接器与汇流条的连接，为了吸收第一连接器与汇流条之间的位置偏移，考虑利用编织线作为连向第一连接器的内部的电线的方法。但是，若使用编织线，则第一连接器会大型化，在上述壳体内的有限的空间中恐怕难以形成吸收上述位置偏移的结构。
本公开是鉴于上述技术问题而完成的，其目的在于提供一种能够在抑制DC连接器的大型化的同时在设备的壳体内实现DC连接器与汇流条之间的位置偏移的吸收的车辆电源装置。
本公开所涉及的车辆电源装置具备设备和DC连接器。设备配置在连向电动车辆的DC接入口的电气路径上。DC连接器配置在上述电气路径上。DC连接器包含安装在设备的壳体上的第一连接器、以及向第一连接器组装的第二连接器。第一连接器包含配置在壳体的内部的端子和设置在端子的前端的汇流条紧固部。设备包含汇流条，该汇流条配置在壳体的内部，具有与设备的构成部件连接的一端。汇流条包含：连接器紧固部，其经由紧固件而与汇流条紧固部紧固；以及金属制的Z型弹簧，其介存于汇流条的另一端与连接器紧固部之间，或者，在汇流条的另一端侧的端部处介存于汇流条的中途，且沿平行于另一端侧的端部处的汇流条的延伸方向的方向伸缩。
设备也可以是向电动车辆的驱动用电动机供给电力的电池包。
设备也可以是在向电动车辆的驱动用电动机供给电力的电池包与DC接入口之间配置在电气路径上的升降压转换器。
根据本公开所涉及的车辆电源装置，通过利用如上述那样配置的Z型弹簧，与为了吸收DC连接器(第一连接器)与汇流条之间的位置偏移而利用编织线的例子相比，能够在抑制DC连接器的大型化的同时，实现该位置偏移的吸收。
附图说明
参考附图对本发明的例子性实施例的特征、优点以及技术上和工业上的意义进行说明，附图中相同的标号表示相同部件，其中：
图1是概略性示出实施方式所涉及的车辆电源装置的构成的一例的图。
图2是概略性表示图1所示的第一连接器的周围的结构的图。
图3是概略性表示从图2中的箭头A的方向观察到的第一连接器的周围的结构的图。
图4是用于说明实施方式所涉及的Z型弹簧的另一配置例的图。
图5是用于说明实施方式所涉及的Z型弹簧的又一配置例的图。
具体实施方式
以下，参照附图，对本公开的实施方式所涉及的车辆电源装置进行说明。另外，在各图中对共同的要素标注相同的标号，省略或简化重复的说明。
1.车辆电源装置的构成
图1是概略性示出实施方式所涉及的车辆电源装置10的构成的一例的图。车辆电源装置10搭载在电池电动车辆(BEV)及插电式混合动力电动车辆(PHEV)等电动车辆上。
车辆电源装置10包含DC(直流)接入口12、电池包14和升降压转换器16。电池包14和升降压转换器16各自相当于配置在连向DC接入口12的电气路径上的“设备”的例子。具体而言，DC接入口12和升降压转换器16经由正负一对电力线18连接。另外，升降压转换器16和电池组14经由正负一对电力线20连接。
车辆电源装置10能够经由DC接入口12从外部直流电源接受电力的供给。从外部直流电源向车辆电源装置10施加的电压是800V等高电压。
电池包14包含壳体22。在壳体22的内部，例如与电池堆一起收容有与电池堆连接的电池周边部件(例如继电器和保险丝)。
升降压转换器(升降压型DC/DC转换器)16包含壳体24。在壳体24的内部例如收容有升降压电路、高压断路电路以及DC继电器。升降压转换器16(升降压电路)配置为，具有使从DC接入口12向电池包14供给的电压(例如，800V)下降到规定的电压(例如，400V)的降压功能。另外，升降压转换器16配置为，具有使从电池包14供给的电压(例如，400V)上升到规定的电压(例如，800V)的升压功能。另外，由升降压转换器16升压后的高电压例如为了电动车辆的驱动用电动机(省略图示)的驱动而被供给到逆变器(省略图示)。
车辆电源装置10具备配置在连向DC接入口12的电气路径上的DC(直流)连接器30。具体而言，如图1所示，使用了电力线18的DC接入口12与升降压转换器16的连接经由DC连接器30进行。另外，DC连接器30同样用于升降压转换器16与电力线20的一端的连接。另外，DC连接器30同样用于电力线20的另一端与电池包14的连接。各DC连接器30由第一连接器32和向第一连接器32组装的第二连接器34构成。另外，图1中的标号36表示这些连接器32及34相互嵌合的嵌合部。第一连接器32是公连接器和母连接器中的一个，第二连接器34是公连接器和母连接器中的另一个。
图2是概略性表示图1所示的第一连接器32的周围的结构的图。图3是概略性表示从图2中的箭头A的方向观察到的第一连接器32的周围的结构的图。
在图2和图3中，例示出了安装在电池包14的壳体22上的第一连接器32周围的结构，但安装在升降压转换器16的壳体24上的第一连接器32周围的结构也是同样的。另外，在图2和图3中，省略了第二连接器34和嵌合部36的图示。
第一连接器32包含树脂制的壳体38、正负一对端子40以及一对汇流条紧固部42。各端子40是金属制的端子，安装在壳体38上。各端子40配置在电池包14的壳体22的内部。在各端子40的前端(与壳体38相反一侧的一端)固定有汇流条紧固部42。各汇流条紧固部42为金属制，具有螺栓44(参照图3)的紧固孔42a。另外，汇流条紧固部42也可以与端子40一体形成。
电池包14包含配置在壳体22的内部的正负一对汇流条50。图2和图3中示出了第一连接器32侧的汇流条50的端部。各汇流条50是金属制的，具有与电池包14的构成部件(例如继电器)连接的一端(省略图示)。另外，在安装在升降压转换器16的壳体24上的第一连接器32的例子中，与该第一连接器32对应的汇流条具有与升降压转换器16的构成部件连接的一端。
每个汇流条50包含连接器紧固部52(参照图3)和金属制的Z型弹簧54。各连接器紧固部52为金属制，具有螺栓44的紧固孔52a。各连接器紧固部52在与汇流条紧固部42重叠的状态下，经由作为紧固件的一例的螺栓44及螺母46而与汇流条紧固部42紧固。另外，螺母46可以事先固定在连接器紧固部52上，也可以与图3所示的例子相反地将螺母46事先固定在汇流条紧固部42上。
Z型弹簧54介存于汇流条50的另一端50a与连接器紧固部52之间。Z型弹簧54以沿平行于另一端50a侧的端部处的汇流条50的延伸方向D的方向伸缩的方式设置。Z型弹簧54例如通过将板状的构件弯折而形成。
更详细地说，例如，Z型弹簧54的一端通过焊接等方法固定在金属制的螺母56上。螺母56通过螺合等方法固定在汇流条50的另一端50a上。Z型弹簧54的另一端通过焊接等方法固定在连接器紧固部52上。另外，汇流条50与连接器紧固部52经由螺母56通过电线58连接。
2.效果
上述的电池包14和升降压转换器16等车辆电源装置10的设备的壳体(例如壳体22和24)的内部空间是有限的。更详细地说，由于在该壳体内配置有该设备的各种构成部件，所以与第一连接器连接的汇流条在避开各构成部件的同时利用壳体内的有限空间来进行配置。
为了吸收配置在如上述那样的环境下的第一连接器32的端子40与汇流条50之间的位置偏移(不对准)，本实施方式所涉及的车辆电源装置10具备介存于汇流条50的另一端50a与连接器紧固部52之间的Z形弹簧54。Z形弹簧54能够搭载在小空间中。并且，通过具备如上述那样配置的Z型弹簧54，能够利用Z型弹簧54的伸缩在小空间内吸收上述位置偏移。因此，与为了吸收该位置偏移而利用编织线的例子相比，能够在抑制第一连接器32(DC连接器30)的大型化的同时，实现上述位置偏移的吸收。
3.Z型弹簧的另一配置例
图4是用于说明实施方式所涉及的Z型弹簧54的另一配置例的图。图4及后述的图5是表示从与图3相同的方向观察到的第一连接器的周围的结构的图。
在图4所示的例子中，配置在壳体22的内部的正负一对汇流条60各自包含连接器紧固部62和Z形弹簧54。连接器紧固部62固定在汇流条60的另一端60a(图4所示的第一连接器32侧的汇流条60的端部的一端)上。连接器紧固部62也可以与汇流条60一体形成。并且，在该例子中，Z型弹簧54以沿平行于另一端60a侧的端部处的汇流条60的延伸方向D的方向伸缩的方式设置。
根据图4所示的结构，也能够利用Z型弹簧54的伸缩，在小空间内吸收第一连接器32与汇流条60之间的位置偏移。因此，与为了吸收该位置偏移而利用编织线的例子相比，能够在抑制第一连接器32(DC连接器)的大型化的同时，实现上述位置偏移的吸收。
图5是用于说明实施方式所涉及的Z型弹簧54的又一配置例的图。在图5所示的例子中，连接器的第一连接器70包含树脂制的壳体38，以及正负一对端子72、一对汇流条紧固部74。端子72在从壳体38去往汇流条紧固部74的中途弯折。
另一方面，配置在壳体22的内部的正负一对汇流条80各自包含连接器紧固部82和Z形弹簧54。连接器紧固部82固定在汇流条80的另一端80a(图5所示的第一连接器70侧的汇流条80的端部的一端)上。连接器紧固部82也可以与另一端80a一体形成。并且，在该例子中，也与图4所示的例子同样地，Z型弹簧54以沿平行于另一端80a侧的端部处的汇流条80的延伸方向D的方向伸缩的方式设置。根据这样的结构，也能够起到与图4所示的例子同样的效果。
4.设备的另一例
在上述实施方式中，作为“配置在连向电动车辆的DC接入口的电气路径上的设备”，例示了电池包14以及升降压转换器16。然而，该“设备”也可以包括例如经由正负一对电力线连接于电池包14的电力供应单元(ESU：省略图示)。ESU是集合了AC(交流)充电、电力转换以及电力分配这些功能的单元。并且，本公开所涉及的“DC连接器”例如也可以在具备这样的ESU的车辆电源装置中配置于位于ESU与电池包14之间的电气路径上。

Claims (3)

1.一种车辆电源装置，具备：
设备，其配置在连向电动车辆的DC接入口的电气路径上；以及
DC连接器，其配置在所述电气路径上，
所述DC连接器包含：
第一连接器，其安装在所述设备的壳体上；以及
第二连接器，其向所述第一连接器组装，
所述第一连接器包含配置在所述壳体的内部的端子和设置在所述端子的前端的汇流条紧固部，
所述设备包含汇流条，所述汇流条配置在所述壳体的内部，具有与所述设备的构成部件连接的一端，
所述汇流条包含：
连接器紧固部，其经由紧固件而与所述汇流条紧固部紧固；以及
金属制的Z型弹簧，其介存于所述汇流条的另一端与所述连接器紧固部之间，或者，在所述汇流条的所述另一端侧的端部处介存于所述汇流条的中途，且沿平行于所述另一端侧的所述端部处的所述汇流条的延伸方向的方向伸缩。
2.根据权利要求1所述的车辆电源装置，其中，
所述设备是向所述电动车辆的驱动用电动机供给电力的电池包。
3.根据权利要求1所述的车辆电源装置，其中，
所述设备是在向所述电动车辆的驱动用电动机供给电力的电池包与所述DC接入口之间配置在所述电气路径上的升降压转换器。
CN202310422326.2A 2022-06-28 2023-04-19 车辆电源装置 Pending CN117317625A (zh)

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