CN110265734B - Voltage monitor for 48V rail storage battery - Google Patents
Voltage monitor for 48V rail storage battery Download PDFInfo
- Publication number
- CN110265734B CN110265734B CN201910515217.9A CN201910515217A CN110265734B CN 110265734 B CN110265734 B CN 110265734B CN 201910515217 A CN201910515217 A CN 201910515217A CN 110265734 B CN110265734 B CN 110265734B
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- supporting plate
- relay
- voltage
- voltage monitor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a voltage monitor for a 48V track storage battery, which comprises a first supporting plate, a second supporting plate and an upper cover, wherein a DC/DC voltage converter and a battery management system are installed on the first supporting plate, the second supporting plate and the first supporting plate are vertically overlapped and fixed together, a current sensor, a relay and a radiator are arranged on the second supporting plate, a diode is attached and fixed on the inward side surface of the radiator, all components are connected with one another as required, the battery management system is used for collecting current data flowing through the current sensor and voltage data of a corresponding storage battery pack and controlling the on-off and the on-off of a switch of the relay, and the upper cover is matched with the second supporting plate and covered with the radiator which is arranged outside the upper cover. The voltage monitor for the 48V track storage battery has the advantages of simple and compact structure and convenience in assembly and disassembly.
Description
Technical Field
The invention relates to a voltage monitor for a 48V rail storage battery.
Background
With the development of new energy utilities, battery packs are widely used, and nickel-metal hydride storage battery packs are also increasingly used as power supply components on railway carriages. When the conventional nickel-metal hydride storage battery pack is manufactured, a component with a data monitoring function is not arranged, and the abnormality of the voltage and the current of the battery can not be found in time, so that the phenomena of over-discharge and over-charge of the storage battery pack are caused, potential safety hazards are generated, the cycle life of the storage battery pack is influenced, and the use cost and the maintenance cost are increased to a certain extent.
Disclosure of Invention
The invention aims to provide a voltage monitor for a 48V rail storage battery, which has a simple and compact structure and is convenient to assemble and disassemble.
The invention is realized by the following scheme:
a voltage monitor for a 48V track storage battery comprises a first supporting plate, a second supporting plate and an upper cover, wherein a DC/DC voltage converter and a battery management system are installed on the first supporting plate, the second supporting plate and the first supporting plate are vertically and fixedly overlapped, a current sensor, a relay and a radiator are arranged on the second supporting plate, a diode is fixedly attached to the inward side surface of the radiator, one end of the DC/DC voltage converter is connected with one end of a switch of the relay, the connection end of the DC/DC voltage converter is used as the positive input end of the voltage monitor, the other end of the switch of the relay is connected with the positive power supply end of the battery management system, the connection end of the relay is used as the positive output end of the voltage monitor, the other end of the DC/DC voltage converter is connected with one end of the current sensor, and the connection end of the DC/DC voltage converter is used as the negative input end of the voltage monitor, the other end of the current sensor is connected with the negative end of a power supply of the battery management system, the connected end serves as the negative output end of the voltage monitor, the diode is connected in parallel with two ends of a switch of the relay, two ends of a coil of the relay are connected in parallel with the relay control end of the battery management system, the battery management system is used for collecting current data flowing through the current sensor and voltage data of a corresponding storage battery pack and controlling the switch of the relay to be switched on and switched off, the upper cover is matched with the second supporting plate in a clamping and covering mode, and the radiator is arranged outside the upper cover. The setting position of each components and parts in the first backup pad can be adjusted as required, and the setting position of each components and parts in the second backup pad can be adjusted as required to make things convenient for the connection between each components and parts and each components and parts arrange more compactly can.
Further, one end that the switch of relay is connected with DC/DC voltage converter has concatenated first fuse, one end that current sensor is connected with DC/DC voltage converter has concatenated the second fuse, first fuse is fixed on the fuse installing support with the second fuse, the fuse installing support is fixed in the second backup pad.
Furthermore, an isolation insulation plate is arranged on the fuse mounting bracket between the first fuse and the second fuse.
Further, a remote monitoring device is arranged on the second supporting plate, and a power supply of the remote monitoring device is converted and provided by a DC/DC voltage converter.
Furthermore, the middle parts of the first supporting plate and the second supporting plate are upwards arched in a rectangular shape. The middle part of the first supporting plate is arched upwards, so that the strength can be increased, and the supporting force is improved; the middle part of the second supporting plate is arched upwards, so that the strength is increased, the supporting force is improved, meanwhile, the second supporting plate is matched with the first supporting plate better, the space is effectively utilized, all the parts are arranged more compactly, and the size of the whole voltage monitor is reduced.
Further, the DC/DC voltage converter on the first support plate and the battery management system are jointly covered by a protective cover plate. The protective cover plate has the functions of dust prevention, static electricity prevention, electromagnetic interference prevention and the like.
Further, all be provided with the fixed buckle of pencil on first backup pad, the protection cover plate, fixed buckle on the protection cover plate passes the second backup pad and exposes. The setting of the fixed buckle of pencil can make things convenient for the fixed of connecting pencil etc. between each components and parts for the pencil is arranged not in a jumble, and is whole more pleasing to the eye.
Furthermore, the inward side of the radiator is provided with a copper pipe at the position where the inward side is attached to the diode, the outer surface of the copper pipe is flush with the inward side of the radiator, and the inward side of the radiator is provided with a heat-conducting medium at the position where the inward side is attached to the diode. In actual manufacturing, in order to better radiate heat of the diode during working, the surface of the diode is generally attached to the surface of a radiator, and a copper pipe is arranged on the radiator, so that the size is effectively reduced and the radiating capacity is enhanced compared with a common aluminum radiator. In actual manufacturing, a groove is generally formed in the radiator, and the copper pipe is installed in the groove. The number and the specific arrangement position of the copper pipes can be adjusted and designed according to needs so as to meet the requirement of heat dissipation and transmission of the diodes. The heat conducting effect can be better improved by the arrangement of the heat conducting medium.
According to the voltage monitor for the 48V track storage battery, the components are reasonably arranged on the first supporting plate and the second supporting plate, so that the voltage monitor is simple and compact in overall structure, small in occupied volume, convenient to assemble and disassemble and convenient to maintain subsequently.
The voltage monitor for the 48V track storage battery is used in the storage battery, so that the continuous charging of a nickel-hydrogen storage battery can be avoided, and the over-discharging of the storage battery when a passenger car is in an over-phase state can be monitored, so that the storage battery is protected, the service life of the storage battery is prolonged, and potential safety hazards are reduced; meanwhile, the voltage monitor has the function of dynamically detecting the working state of the storage battery, finds problems in time, picks out the problematic battery in time, keeps the reliability and the high efficiency of the operation of the whole storage battery, can establish a use history file of the storage battery according to data obtained by the voltage monitor, provides data for further optimizing and developing novel batteries, chargers, motors and the like, and provides basis for offline analysis of battery pack faults.
Drawings
FIG. 1 is a schematic view showing the overall structure of a voltage monitor for a 48V rail storage battery in embodiment 1;
FIG. 2 is an exploded view of a voltage monitor for a 48V rail battery in example 1;
FIG. 3 is a schematic structural view of a shield cover plate according to embodiment 1;
FIG. 4 is a schematic structural view of a fuse mounting bracket according to embodiment 1;
fig. 5 is a schematic structural view of a heat sink in embodiment 1;
fig. 6 is a schematic diagram of a connection relationship between components in embodiment 1.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the description of the examples.
Example 1
A voltage monitor for a 48V track storage battery is disclosed, as shown in figures 1 and 2, and comprises a first support plate 1, a second support plate 2 and an upper cover 3, wherein the middle parts of the first support plate 1 and the second support plate 2 are upwards arched in a rectangular manner, a DC/DC voltage converter 4 and a battery management system BMS 5 are installed on the first support plate, the DC/DC voltage converter 4 and the battery management system BMS 5 on the first support plate 1 are jointly covered by a protective cover plate 6, the structural schematic diagram of the protective cover plate is shown in figure 3, the second support plate 2 and the first support plate 1 are vertically overlapped and fixed together, a current sensor 7, a relay 8, a radiator 9 and a remote monitoring device 10 are arranged on the second support plate 2, a diode 21 is attached and fixed on the inward side surface of the radiator 9, a copper pipe 11 is arranged on the inward side surface of the radiator 9 and the diode 21, and the outer surface of the copper pipe 11 is flush with the inward side surface of the radiator 9, a heat conducting medium (not shown) is disposed at a position where the inward side surface of the heat sink 8 is attached to the diode 21, a structural diagram of the heat sink is shown in fig. 5, one end of the DC/DC voltage converter 4 is connected to one end of the switch of the relay 8, the connected end serves as a positive input end 12 of the voltage monitor, one end of the switch of the relay 8 connected to the DC/DC voltage converter 4 is connected in series to a first fuse 13, the other end of the switch of the relay 8 is connected to a positive power supply terminal of the battery management system BMS 5, the connected end serves as a positive output end 14 of the voltage monitor, the other end of the DC/DC voltage converter 4 is connected to one end of the current sensor 7, the connected end of the current sensor 7 connected to the DC/DC voltage converter 4 serves as a negative input end 15 of the voltage monitor, and one end of the current sensor 7 connected to the DC/DC voltage converter 4 is connected in series to a second fuse 16, the other end of the current sensor 7 is connected to the negative terminal of the power supply of the battery management system BMS 5 and the connected terminal serves as the negative output terminal 17 of the voltage monitor, the first fuse 13 and the second fuse 16 are fixed to the fuse mounting bracket 18, the fuse mounting bracket 18 is fixed to the second support plate 2, the fuse mounting bracket 18 is provided with an insulating plate 19 at a position between the first fuse 13 and the second fuse 16, the fuse mounting bracket has a structure schematically shown in fig. 4, the diode 1 is connected in parallel to both ends of the switch of the relay 8, both ends of the coil of the relay 8 are connected in parallel to the relay control terminal of the battery management system BMS 5, the battery management system BMS 5 is configured to collect current data flowing through the current sensor 7 and voltage data of the corresponding battery pack and to control the opening and closing of the switch of the relay 8, the power supply of the remote monitoring device 10 is provided by the conversion of the DC/DC voltage converter 4, the schematic diagram of the connection relationship among the components is shown in fig. 6, the upper cover 3 is matched with the clamping cover on the second support plate 2, the radiator 9 is arranged outside the upper cover 3, the first support plate 1 and the protective cover plate 6 are both provided with the wire harness fixing buckle 20, and the fixing buckle 20 on the protective cover plate 6 is exposed through the second support plate 2.
When the device is used, the positive output end and the negative output end of the voltage monitor are connected with the positive end and the negative end of a charger/load, the positive input end and the negative input end of the voltage monitor are connected with the positive end and the negative end of a corresponding nickel-hydrogen storage battery pack, and the voltage acquisition end of the battery management system BMS is connected with the corresponding nickel-hydrogen storage battery pack, so that data monitoring such as voltage and the like can be carried out on the nickel-hydrogen storage battery pack, when the voltage of the nickel-hydrogen storage battery pack is abnormal, technicians can be timely reminded to maintain, and meanwhile, when the nickel-hydrogen storage battery pack needs to be charged or the load needs to be powered, the charger can be directly used for charging the nickel-hydrogen storage battery pack or the nickel-hydrogen storage battery pack directly provides power for the load.
Example 2
A voltage monitor for a 48V rail storage battery, which has a similar structure to that of the voltage monitor for a 48V rail storage battery in embodiment 1, except that: the second supporting plate is not provided with a remote monitoring device.
Claims (7)
1. A voltage monitor for a 48V rail battery, comprising: the device comprises a first supporting plate, a second supporting plate and an upper cover, wherein the middle parts of the first supporting plate and the second supporting plate are upwards arched in a rectangular shape, a DC/DC voltage converter and a battery management system are installed on the first supporting plate, the second supporting plate and the first supporting plate are vertically and fixedly overlapped, a current sensor, a relay and a radiator are arranged on the second supporting plate, a diode is fixedly attached to the inward side surface of the radiator, one end of the DC/DC voltage converter is connected with one end of a switch of the relay, the connected end of the DC/DC voltage converter is used as the positive input end of a voltage monitor, the other end of the switch of the relay is connected with the positive power supply end of the battery management system, the connected end of the relay is used as the positive output end of the voltage monitor, the other end of the DC/DC voltage converter is connected with one end of the current sensor, and the connected end of the DC/DC voltage converter is used as the negative input end of the voltage monitor, the other end of the current sensor is connected with the negative end of a power supply of the battery management system, the connected end serves as the negative output end of the voltage monitor, the diode is connected in parallel with two ends of a switch of the relay, two ends of a coil of the relay are connected in parallel with the relay control end of the battery management system, the battery management system is used for collecting current data flowing through the current sensor and voltage data of a corresponding storage battery pack and controlling the switch of the relay to be switched on and switched off, the upper cover is matched with the second supporting plate in a clamping and covering mode, and the radiator is arranged outside the upper cover.
2. The voltage monitor for a 48V rail battery of claim 1, wherein: the switch of relay is served with one that DC/DC voltage converter is connected and is concatenated first fuse, one that current sensor is connected with DC/DC voltage converter is served and is concatenated the second fuse, first fuse is fixed on the fuse installing support with the second fuse, the fuse installing support is fixed in the second backup pad.
3. The voltage monitor for a 48V rail battery of claim 2, wherein: and an isolation insulation board is arranged on the fuse mounting bracket between the first fuse and the second fuse.
4. The voltage monitor for a 48V rail battery of claim 1, wherein: and a remote monitoring device is also arranged on the second supporting plate, and the power supply of the remote monitoring device is converted and provided by a DC/DC voltage converter.
5. The voltage monitor for a 48V rail battery of claim 1, wherein: the DC/DC voltage converter and the battery management system on the first support plate are jointly covered by a protective cover plate.
6. The voltage monitor for a 48V rail battery of claim 5, wherein: all be provided with the fixed buckle of pencil on first backup pad, the protection cover plate, fixed buckle on the protection cover plate passes the second backup pad and exposes.
7. The voltage monitor for a 48V rail battery according to any one of claims 1 to 6, wherein: the radiator is provided with the copper pipe and the copper pipe surface is parallel and level with the radiator inboard side on the inboard side and the diode position of laminating mutually, be provided with heat-conducting medium on the radiator inboard side and the diode position of laminating mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910515217.9A CN110265734B (en) | 2019-06-14 | 2019-06-14 | Voltage monitor for 48V rail storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910515217.9A CN110265734B (en) | 2019-06-14 | 2019-06-14 | Voltage monitor for 48V rail storage battery |
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| CN110265734A CN110265734A (en) | 2019-09-20 |
| CN110265734B true CN110265734B (en) | 2022-03-11 |
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| CN110265734A (en) | 2019-09-20 |
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Effective date of registration: 20210722 Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province Applicant after: NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS Address before: 410205 No. 348, west slope, Tongzi high tech Development Zone, Hunan, Changsha Applicant before: HUNAN COPOWER EV BATTERY Co.,Ltd. |
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