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Apparatus and method for direction-dependent operation of electrochemical energy store

An energy storage and electrochemical technology, applied in the field of vehicles, can solve the problem of not being able to load and realize energy feedback, and achieve the effect of saving overcurrent safety devices

Pending Publication Date: 2021-07-30
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Its disadvantage is that energy feedback through the load cannot be realized

Method used

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  • Apparatus and method for direction-dependent operation of electrochemical energy store
  • Apparatus and method for direction-dependent operation of electrochemical energy store

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 A device 100 for direction-dependent operation of an electrochemical energy store 101 is shown. The device 100 comprises a first semiconductor switch 102 , a second semiconductor switch 104 , a load 108 and a charging unit 109 . The energy store 101 , the first semiconductor switch 102 , the second semiconductor switch 104 and the load 108 are connected in series. The charging unit 109 is connected in parallel to the load 108 . The first semiconductor switch 102 includes a first reverse diode 103 . The second semiconductor switch 104 includes a second reverse diode 105 . The first semiconductor switch 102 has a first connection 120 , a second connection 121 and a third connection 122 , wherein the second connection 121 serves as a control connection. The second semiconductor switch 104 has a fourth connection 123 , a fifth connection 124 and a sixth connection 125 , wherein the fifth connection 124 serves as a control connection.

[0028] The cathode of th...

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Abstract

The present invention relates to an apparatus (100) for the direction-dependent operation of an electrochemical energy store (101). The electrochemical energy store (101) has a first semiconductor switch (102) which comprises a first inverse diode (103), a second semiconductor switch (104) which comprises a second inverse diode (105), a first measuring device (106) and a second measuring device (107), and is characterized in that the first semiconductor switch (102) and the second semiconductor switch (104) are connected in series, and the first measuring device (106) is configured to capture a first voltage measured value across the first inverse diode (103) and to compare the first voltage measured value with a first predetermined limit value, wherein the first semiconductor switch (102) is actuatable on the basis of the comparison of the first voltage measured value with the first predetermined limit value, and the second measuring device (107) is configured to capture a second voltage value across the second inverse diode (105) and to compare the second voltage measured value with a second predetermined limit value, wherein the second semiconductor switch is actuatable on the basis of the comparison of the second voltage measured value with the second predetermined limit value.

Description

technical field [0001] The invention relates to a device and a method for direction-dependent operation of an electrochemical energy store, as well as a vehicle having such a device. Background technique [0002] The battery management system has an isolating switch, such as a relay or a semiconductor switch, to block or disconnect the flow of current. Disconnectors operate as normal switches and are insensitive to current direction. This means that current can flow in both directions, enabling simultaneous charging and discharging of the battery. The semiconductor switches used here are, for example, Mosfets (Metal-Oxide Semiconductor Field Effect Transistors), which have an intrinsic body diode. [0003] A disadvantage of this is that it is not possible to switch the isolating switch in a direction-dependent manner, since the losses in the body diode would be very large. [0004] Battery management systems are also known which have separate connections for charging and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/10H03K17/66H02H3/087H02J7/00H03K17/082
CPCH03K17/102H03K17/107H03K2217/0009H03K17/66H03K2017/307H03K17/0822H03K17/0828Y02T10/70Y02T10/7072Y02T90/14H02J7/00304H02J7/0031
Inventor A·格莱特S·兰达
Owner ROBERT BOSCH GMBH
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