CN214755497U

CN214755497U - Battery feed protection circuit using micro-break switch and release

Info

Publication number: CN214755497U
Application number: CN202120341589.7U
Authority: CN
Inventors: 蔡金龙; 其他发明人请求不公开姓名
Original assignee: Hangzhou Weiling Technology Co ltd
Current assignee: Hangzhou Weiling Technology Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-11-16
Anticipated expiration: 2031-02-05

Abstract

The utility model relates to an use battery feed protection circuit of disconnected switch and release a little, including host system, step-down switch power, battery B + end, battery B-end, battery B + end, battery B-end are the step-down switch power supply, step-down switch power is the host system power supply, be connected with battery auxiliary power supply return circuit between host system and battery B + end, battery auxiliary power supply return circuit includes disconnected switch and a direct current 24V normally closed relay a little, disconnected switch is parallelly connected with direct current 24V normally closed relay a little. The utility model discloses a can carry out the feed protection circuit who protects to the battery. The micro-break switch and the release can be automatically disconnected during feeding, so that the circuit is protected.

Description

Battery feed protection circuit using micro-break switch and release

Technical Field

The utility model relates to a feed protection circuit technical field especially relates to a battery feed protection circuit who uses little disconnected switch and release.

Background

Along with the popularization of new energy storage systems, domestic or national off-grid energy storage systems are applied more and more, but power supply of a battery management system and related auxiliary equipment in the off-grid system comes from an energy storage battery, so that continuous power consumption of the battery can be brought, especially under the condition that the electric quantity of the whole battery is discharged, the battery does not have a charging condition at the moment, if the power consumption is continued, the battery is fed seriously, even the electric quantity of the battery is consumed completely, the whole set of energy storage system cannot be used continuously, and the problem in the existing off-grid energy storage system is solved.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies in the background art, the utility model relates to an use battery feed protection circuit of disconnected switch and release a little, according to above-mentioned problem, designed a feed protection circuit that can protect the battery. The micro-break switch and the release can be automatically disconnected during feeding, so that the circuit is protected.

The utility model relates to an use battery feed protection circuit of disconnected switch and release a little, including host system, step-down switch power, battery B + end, battery B-end, battery B + end, battery B-end are the step-down switch power supply, step-down switch power is the host system power supply, be connected with battery auxiliary power supply return circuit between host system and battery B + end, battery auxiliary power supply return circuit includes disconnected switch and a direct current 24V normally closed relay a little, disconnected switch is parallelly connected with direct current 24V normally closed relay a little.

Furthermore, the micro-breaking tripping switch comprises a first tripping terminal, a second tripping terminal, an ON gear and an OFF gear, and the first tripping terminal and the second tripping terminal are connected to the main control module.

Further, battery auxiliary power supply return circuit still is provided with first normally closed contact, second normally closed contact, third normally closed contact, first normally closed contact is located between master control module and the step-down switching power supply, second normally closed contact, third normally closed contact are located between master control module and the 24V normally closed relay of direct current.

Further, the step-down switching power supply provides 24V low-voltage power supply.

Further, when the micro-break tripping switch is located at an ON gear, the battery auxiliary power supply loop is conducted, the system is powered ON, and the first normally closed contact, the second normally closed contact and the third normally closed contact in the main control module are conducted to drive the direct-current 24V normally closed relay to be closed, so that the conventional power supply of the system is completed.

Furthermore, the main control module is provided with an RLY1+ end and an RLY 1-end, and is connected with a first tripping terminal and a second tripping terminal of the micro-break tripping switch through a control contact of the RLY1+ end and the RLY 1-end, and at the moment, the main control module controls the micro-break tripping switch to automatically switch OFF to an OFF gear, so that power supply of the system is completed.

Further, when the battery feeds power, the first normally closed contact, the second normally closed contact and the third normally closed contact of the main control module are disconnected, the direct-current 24V normally closed relay is disconnected, and the battery auxiliary power supply loop is closed.

The utility model has the advantages as follows:

1. the auxiliary power supply is automatically disconnected after the battery of the energy storage system feeds power, and the problem that the traditional scheme cannot be automatically disconnected is solved;

2. when the power supply or charging condition is provided, the power can be supplied again by manually closing the micro switch, so that the problem that the manual closing can not be realized even if the disconnecting switch is added in the traditional scheme, and the direct current 24V power supply is required to be provided from the outside in advance is solved;

3. the system automatic tripping function of the micro-disconnecting switch is realized, and the problem that the traditional scheme cannot automatically trip is solved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic diagram of a prior art circuit configuration.

Fig. 2 is a schematic circuit diagram of an embodiment of the present invention.

Reference numeral, 1, a main control module; 11. RLY1+ terminal; 12. RLY 1-terminal; 2. a step-down switching power supply; 3. a battery B + terminal; 4. a battery B-terminal; 5. a battery-assisted power supply loop; 51. a micro-break trip switch; 511. a first trip terminal; 512. a second trip terminal; 513. ON gear; 514. OFF gear; 52. a direct current 24V normally closed relay; 53. a first normally closed contact; 54. a second normally closed contact; 55. a third normally closed contact.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described and discussed below with reference to the accompanying drawings of the present invention, and it is obvious that only some examples, not all examples, of the present invention are described herein, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

For the convenience of understanding the embodiments of the present invention, the following detailed description will be given by way of example with reference to the accompanying drawings, and the embodiments are not limited to the embodiments of the present invention.

Referring to fig. 1 in the prior art, the voltage reduction switching power supply includes a main control module 1, a voltage reduction switching power supply 2, a battery B + terminal 3, and a battery B-terminal 4, where the voltage reduction switching power supply 2 includes four interfaces: the battery comprises a VIN-end, a VIN + end, a V0-end and a V0+ end, wherein a battery B + end 3 is connected with a fuse and then connected with the VIN + end, the battery B-end is connected with the VIN-end, the V0-end and the V0+ end are connected with a main control module 1 to provide 24V voltage for the main control module 1, and the main control module 1 is further provided with an RLY1+ end 11 and an RLY 1-end 12. When the battery pack power is very low when the battery pack power is exhausted, disconnection cannot be performed, and the external equipment continues to consume the battery power until the battery is seriously fed or the battery power is completely exhausted to cause incapability of use.

The embodiment 1 of the utility model is shown with reference to fig. 2, improves on the basis of prior art, has set up battery auxiliary power supply circuit 5 between host system 1 and battery B-end 4, has effectively solved the serious feed of battery or battery power completely empty and lead to the problem of unable use.

The battery auxiliary power supply loop 5 comprises a micro-break tripping switch 51, a direct current 24V normally closed relay 52, a first normally closed contact 53, a second normally closed contact 54 and a third normally closed contact 55, the micro-break tripping switch 51 and the direct current 24V normally closed relay 52 are connected in parallel, the first normally closed contact 53 is located on a single branch between the main control module 1 and the V0+, and the second normally closed contact 54 and the third normally closed contact 55 are located in the battery auxiliary power supply loop 5.

The micro-breaking trip switch 51 comprises a first trip terminal 511, a second trip terminal 512, an ON gear 513 and an OFF gear 514, wherein the first trip terminal 511 is connected with an end 11 of RLY1+, and the second trip terminal 512 is connected with an end 12 of RLY 1.

When the system is powered ON initially, the micro-break tripping switch 51 is manually dialed to an ON gear 513, at the moment, the battery auxiliary power supply loop 5 is conducted, the system is powered ON, after the system is powered ON, the first normally closed contact 53, the second normally closed contact 54 and the third normally closed contact 55 in the main control module of the battery management system conduct the direct-current 24V normally closed relay 52 to be closed, the conventional power supply of the system is completed, the main control module 1 controls the second normally closed contact 54 and the third normally closed contact 55 to be connected with the first tripping terminal 511 and the second tripping terminal 512 of the micro-break tripping switch 51 through an RLY1+ end 11 and an RLY 1-end 12, at the moment, the main control module 1 controls the micro-break tripping switch 51 to be automatically disconnected to an OFF gear 514 to complete the power supply of the system, when the battery pack is close to feed, the normally closed contact of the main control module 1 is disconnected, therefore, the direct-current 24V normally-closed relay 52 is disconnected, the auxiliary power supply loop is closed, and when the external has a charging condition, the micro-break trip switch 51 is manually switched to the ON gear 513.

In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an use battery feed protection circuit of disconnected switch and release a little, includes host system, step-down switching power supply, battery B + end, battery B-end, battery B + end is the step-down switching power supply, step-down switching power supply is the host system power supply, its characterized in that: and a battery auxiliary power supply loop is connected between the main control module and the B + end of the battery, the battery auxiliary power supply loop comprises a micro-break tripping switch and a direct-current 24V normally-closed relay, and the micro-break tripping switch is connected with the direct-current 24V normally-closed relay in parallel.

2. The battery feed protection circuit using a micro-break switch and trip unit of claim 1, wherein: the micro-breaking tripping switch comprises a first tripping terminal, a second tripping terminal, an ON gear and an OFF gear, and the first tripping terminal and the second tripping terminal are connected to the main control module.

3. The battery feed protection circuit using a micro-break switch and trip unit of claim 2, wherein: the battery auxiliary power supply loop is further provided with a first normally closed contact, a second normally closed contact and a third normally closed contact, the first normally closed contact is located between the main control module and the voltage reduction switch power supply, and the second normally closed contact and the third normally closed contact are located between the main control module and the direct current 24V normally closed relay.

4. A battery feed protection circuit using a micro-break switch and trip unit as claimed in claim 3, wherein: the voltage reduction switching power supply provides 24V low-voltage power supply.

5. The battery feed protection circuit using a micro-disconnect switch and trip unit of claim 4, wherein: when the micro-break tripping switch is located at an ON gear, the battery auxiliary power supply loop is conducted, the system is electrified, and the first normally closed contact, the second normally closed contact and the third normally closed contact in the main control module are conducted to drive the direct-current 24V normally closed relay to be closed, so that the conventional power supply of the system is completed.

6. The battery feed protection circuit using a micro-disconnect switch and trip unit of claim 5, wherein: the main control module is provided with an RLY1+ end and an RLY 1-end, and is connected with a first tripping terminal and a second tripping terminal of the micro-break tripping switch through an RLY1+ end and an RLY 1-end control contact, and at the moment, the main control module controls the micro-break tripping switch to automatically switch OFF to an OFF gear, so that power supply of a system is completed.

7. The battery feed protection circuit using a micro-disconnect switch and trip unit of claim 6, wherein: when the battery feeds power, the first normally closed contact, the second normally closed contact and the third normally closed contact of the main control module are disconnected, the direct-current 24V normally closed relay is disconnected, and the battery auxiliary power supply loop is closed.