Power supply system, and method for charging at least one power cell used as an energy store for an intermediate dc circuit in a power supply system
一种能量供给、中间回路的技术，应用在负载供给电路、高效的车辆充电、二次电池充电/放电等方向，能够解决电池不能容易集成等问题，达到小硬件耗费的效果
Active Publication Date: 2013-05-15
ROBERT BOSCH GMBH
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Problems solved by technology
[0005] Unlike conventional systems in which the electric machine is controlled via an inverter and supplied with electrical energy via an electrical energy store separate therefrom, in the case of the batteries described in the priority applications DE 10 2010 027857 and DE 10 2010 027861 there is no Provides a constant DC voltage so that such batteries cannot be easily integrated into conventional energy supply networks, such as on-board networks of electric or hybrid vehicles
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[0024] figure 1 An embodiment of the energy supply network according to the invention is shown schematically. A first controllable energy store 2 is connected to the three-phase electric machine 1 . The controllable first energy store 2 comprises three energy supply branches 3 - 1 , 3 - 2 and 3 - 3 which are connected on one side to a reference potential T−( reference busbar) and on the other side to the individual phases U, V, W of the motor 1 respectively. Each of these energy supply branches 3-1, 3-2 and 3-3 has m energy storage modules 4-11 to 4-1m or 4-21 to 4-2m or 4-31 to 4- 3m, where m≥2. The energy storage module 4 in turn each comprises a plurality of electrical energy storage units 5 - 11 to 5 - 1 m or 5 - 21 to 5 - 2 m or 5 - 31 to 5 - 3 m connected in series. The energy storage modules 4 further comprise coupling units 6-11 to 6-1m, 6-21 to 6-2m and 6-31 to 6-3m, respectively, which are assigned to the respective storage units of the energy storage module 4. ...
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The invention relates to a power supply system comprising an n-phase electric machine (1), where n = 1, and a controllable energy store (2) used for controlling and supplying electric power to the electric machine (1). The controllable energy store (2) has n parallel power supply branches (3-1, 3-2, 3-3), each of which includes at least two serially connected energy storage modules (4). Each energy storage module comprises at least one electric power cell (5) having an associated controllable coupling unit (6) and is connected to a reference bus (T-) and to one respective phase (U, V, W) of the electric machine (1). The coupling units (6) bridge the associated power cells (5) or connect the associated power cells (5) to the respective power supply branch (3-1, 3-2, 3-3) in accordance with control signals.; In at least one of the power supply branches (3-3), the power cells (5) of the energy storage module (4-3m) connected directly to the reference bar (T-) are connected directly to the reference bar (T-). Said power cells (5) are used as energy stores for an intermediate DC circuit.
Description
technical field [0001] The invention relates to an energy supply network and a method for charging at least one energy storage unit of the energy supply network serving as an energy storage for a direct voltage intermediate circuit. Background technique [0002] It appears that electronic systems combining new energy storage technologies with electric drive technologies will be increasingly used in the future both in stationary applications such as wind power plants and in vehicles such as hybrid or electric vehicles. In conventional applications, an electric machine, for example embodied as an induction machine, is controlled via a converter in the form of an inverter. Typical of such a system is a so-called direct voltage intermediate circuit via which an energy store, usually a battery, is connected to the direct voltage side of the inverter. In order to be able to meet the power and energy requirements given for the respective application, a plurality of battery cells a...
Claims
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IPC IPC(8): H01M10/44H02J7/14
CPCH02J7/1423Y02E60/12Y02T10/7055B60L11/1864Y02T10/7005H02J7/0042Y02T10/7061H02J2007/0059H02J7/0024Y02E10/766H02J7/345H01M16/00H02M7/483H02J2007/0067H02J7/1492Y02T10/7022H01M10/441Y02T10/92B60L58/21H02J2207/20H02J2310/48H02J2300/28H02J7/0025Y02T10/70Y02E60/10Y02E10/76
Inventor P.福伊尔施塔克E.魏森博恩M.凯斯勒
Owner ROBERT BOSCH GMBH