公开(公告)号：US20150010786A1

公开(公告)日：2015-01-08

申请号：US14497914

申请日：2014-09-26

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Markus MAUERER ,  Sebastian SCHARNER ,  Andreas STOERMER ,  Marcus HAFKEMEYER

IPC: H01M10/0525 ,  H01M10/06

Abstract: A vehicle includes an electric onboard power system, in which electrical components and at least one lithium-ion battery are integrated. The lithium-ion battery includes a plurality of lithium-ion cells, each lithium-ion cell is based on a cell technology, and the cell technologies of at least two lithium-ion cells are different.

Abstract translation: 车辆包括电动车载电力系统，其中集成了电气部件和至少一个锂离子电池。 锂离子电池包括多个锂离子电池，每个锂离子电池基于电池技术，并且至少两个锂离子电池的电池技术是不同的。

公开(公告)号：US20170197520A1

公开(公告)日：2017-07-13

申请号：US15468533

申请日：2017-03-24

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Moritz SCHINDLER ,  Markus MAUERER

IPC: B60L11/18 ,  H02J7/14 ,  H02J7/00

CPC classification number: B60L11/1855 ,  B60L11/1853 ,  B60L11/1857 ,  B60L11/1861 ,  B60L11/1868 ,  B60L11/1872 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  H02J7/0021 ,  H02J7/0047 ,  H02J7/1423 ,  Y02T10/7011 ,  Y02T10/7044 ,  Y02T10/7055 ,  Y02T10/7066

Abstract: An energy storage apparatus for an onboard electrical system of a motor vehicle has a first electrical energy store characterized by a first voltage characteristic curve defining the quiescent voltage of the first store depending on the relative state of charge of the first store, and a second electrical energy store which can be connected in parallel with the first electrical energy store by a controllable switching element and which is characterized by a second voltage characteristic curve defining the quiescent voltage of the second electrical energy store depending on the relative state of charge of the second store. A first voltage value range covered by the first voltage characteristic curve and a second voltage value range which is covered by the second voltage characteristic curve partially overlap. The energy storage apparatus further has a device for determining the state of charge of the first energy store and/or of the second energy store. The device establishes the state of charge either by a quiescent voltage measurement device or by a state of charge determination device by balancing a respective battery current. The device opens the controllable switching element when the motor vehicle is in a state similar to the quiescent state and a quality value determined during a previous state of charge determination process in parallel with the state of charge and expressing the quality of the balancing exceeds a predefined threshold value. When the two criteria are fulfilled, the quiescent voltage measurement device for determining the state of charge of at least the first energy store is activated.