CN218054882U

CN218054882U - Four-socket charging system for engineering truck

Info

Publication number: CN218054882U
Application number: CN202222593090.2U
Authority: CN
Inventors: 潘新兴; 陈保贵; 陈宏�; 宋海峰; 陈福春; 魏威; 张金浩; 何向军; 尚家昌
Original assignee: Henan Xintaihang Power Co ltd
Current assignee: Henan Xintaihang Power Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-16
Anticipated expiration: 2032-09-29

Abstract

The utility model provides a four socket charging system for machineshop car, including battery management system BMS and group battery, the cc2 signal output part between first socket and the second socket all is connected with the first cc2 collection pin electricity of battery management system BMS, the cc2 signal output part between the third socket and the fourth socket all is connected with the second cc2 collection pin electricity of battery management system BMS, the voltage signal output part between first socket and the third socket all is connected with the first voltage collection pin electricity of battery management system BMS, the voltage signal output part between the second socket and the fourth socket all is connected with the second voltage collection pin electricity of battery management system BMS. Thereby satisfy the demand that two rifle that charges can charge on four sockets that charge of different positions, and then reduce the input of human cost and material resources cost when satisfying the demand.

Description

Four-socket charging system for engineering truck

Technical Field

The utility model relates to a large capacity electrical power generating system's charging technology, concretely relates to four socket charging system for machineshop car.

Background

Because the lithium battery system has the advantages of high specific energy, high charging speed, zero emission and the like, the lithium battery system is rapidly popularized and applied to engineering vehicles working in the construction fields of bridge and tunnel engineering, subway shield, urban underground pipe networks and the like. In some engineering vehicles constructed in long-distance and large-diameter tunnels, a large-capacity power supply system needs to be equipped to meet construction requirements, the voltage of the large-capacity power supply system matched in the occasions is 500-600V, the capacity is 800-1000 Ah, the maximum charging current of a single gun of a charger which is easily obtained in the market is 250A, the charging time of the vehicle needs 4-8 hours, the time can be compressed to be nearly 2 hours by using double guns for the charger, and the overall construction progress is improved. However, because the engineering vehicle is in a special construction environment, the charging environment is limited, and charging sockets are required to be arranged on different side surfaces of the engineering vehicle so as to meet the requirement of double-gun charging; in addition, because battery management system BMS on the market generally only includes two CC2 and gathers pin and two voltage acquisition pins, if need increase the socket that charges, then need gather pin and voltage acquisition pin and inside program to the CC2 of current battery management system BMS and upgrade and reform transform, perhaps adopt two battery management system BMS to judge the rifle that charges on four sockets that charge and insert the condition to increase the cost.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model provides a four socket charging system for machineshop car, aim at satisfy two rifle that charge can carry out the demand that charges on four charging socket of different positions under the condition that does not increase and upgrade battery management system BMS.

A four-socket charging system for an engineering truck comprises a battery management system BMS, a charging relay, a battery pack and four charging sockets, wherein the positive output ends of the four charging sockets are electrically connected with the positive end of the battery pack respectively through the charging relays corresponding to the four charging sockets, and the negative output ends of the four charging sockets are electrically connected with the negative end of the battery pack; the four charging sockets are respectively marked as a first socket, a second socket, a third socket and a fourth socket, cc2 signal output ends of the first socket and the second socket are electrically connected with a first cc2 acquisition pin of the battery management system BMS, cc2 signal output ends of the third socket and the fourth socket are electrically connected with a second cc2 acquisition pin of the battery management system BMS, voltage signal output ends of the first socket and the third socket are electrically connected with a first voltage acquisition pin of the battery management system BMS, and voltage signal output ends of the second socket and the fourth socket are electrically connected with a second voltage acquisition pin of the battery management system BMS; and the four charging relays are respectively and electrically connected with corresponding control pins on the battery management system BMS.

Further comprises the following steps: the charging socket is a national standard direct current charging socket, and the battery pack is a lithium ion battery pack.

In order to ensure the charging and discharging safety of the battery pack, the method further comprises the following steps: the negative output ends of the four charging sockets are electrically connected with the negative end of the battery pack after sequentially passing through the fuse, the current sensor and the discharging relay.

The utility model has the advantages that: through adopting a conventional battery management system BMS on the market, with two cc2 pins and two voltage acquisition pin logical connections on four cc2 signal output part and the voltage signal output part of four charging socket and a battery management system BMS to satisfy the demand that two charging guns can charge on four charging socket of different positions, avoid upgrading the transformation to current battery management system BMS, or adopt two battery management system BMS, and then reduce the input of human cost and material resources cost when satisfying the demand.

Drawings

FIG. 1 is an electrical schematic diagram of the present invention;

fig. 2 is a low-voltage connection schematic diagram of the present invention.

In the figure, 1, a battery pack; 2. a first charging relay; 3. a second charging relay; 4. a second socket, 5, a first socket; 6. a fuse; 7. a current sensor; 8. a discharge relay; 9. a battery management system BMS; 10. a second discharge relay; 11. a third socket; 12. a fourth socket; 13. a third charging relay; 14. a fourth charging relay; 15. a first signal acquisition point; 16. a second signal acquisition point; 17. a third signal acquisition point; 18. a fourth signal acquisition point.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention. The terms of left, middle, right, upper and lower directions in the examples of the present invention are only relative concepts or reference to the normal use status of the product, and should not be considered as limiting.

The first embodiment:

a four-socket charging system for a mobile machinery shop, as shown in fig. 1 and 2, comprising a battery management system BMS9, four charging relays, a battery pack 1 and four charging sockets, wherein the battery pack is a high-capacity lithium ion battery pack, positive output terminals of the four first socket 5, the second socket 4, the third socket 11 and the fourth socket 12 are electrically connected to a positive terminal of the battery pack 1 through the first charging relay 2, the second charging relay 3, the third charging relay 13 and the fourth charging relay 14, respectively, one to one, negative output terminals of the four first socket 5, the second socket 4, the third socket 11 and the fourth socket 12 are electrically connected to a negative terminal of the battery pack, cc2 signal output terminals of the two first socket 5 and the second socket 4 are electrically connected to a first cc2 collecting pin of the battery management system BMS9, cc2 signal output terminals of the two third socket 11 and the fourth socket 12 are electrically connected to a second cc2 collecting pin of the battery management system BMS9, voltage signal output terminals of the two first socket 5 and the third socket 11 are electrically connected to a second cc2 collecting pin of the battery management system BMS9, and a voltage signal output terminal of the two of the fourth socket 12 are electrically connected to a second cc2 collecting pin of the battery management system BMS 9; the four charging relays are respectively and electrically connected with corresponding control pins on the battery management system BMS 9; and the four charging sockets are national standard direct current charging sockets.

The utility model discloses a theory of operation sets up first socket and second socket in the left side of machineshop car, sets up third socket and fourth socket on the right side of machineshop car, combines to go up the table and shows:

1. the battery pack for the engineering truck is charged by a single gun.

When the charging gun is plugged into the second charging socket 4 for charging. The battery management system BMS9 is powered on to work, at the moment, the battery management system BMS9 determines that a charging gun is inserted into the battery management system BMS through two signals, namely a CC2 signal (a first signal acquisition point 15) and a voltage signal (a fourth signal acquisition point 18), and after the self-checking of the battery management system BMS9 of the lithium battery system is faultless, the battery management system BMS9 of the battery system closes the second charging relay 3 according to the national standard charging protocol flow control to start single-gun charging.

2. The battery pack 1 for the engineering truck is charged in a double-gun manner.

When the charging gun is plugged into the second charging socket 4 and the first charging socket 5 for charging. The battery management system BMS9 is electrified to work, the battery management system BMS9 recognizes that two charging guns are inserted through a CC2 signal (a first signal acquisition point 15), a voltage signal (a second signal acquisition point 16) and a voltage signal (a fourth signal acquisition point 18), after the battery management system BMS9 self-checks are free of faults, the battery management system BMS9 controls the second charging relay 3 and the first charging relay 2 to be closed according to a national standard charging protocol flow, double-gun charging is started, the current value requested at the moment is twice of the current value of a single gun, and therefore safe and rapid charging is achieved.

3. The double-side charging function when the engineering truck cannot turn around on the rail.

The battery pack 1 is double-gun charged when the charging gun is gun-plugged in the third socket 11 and the fourth socket 12. The battery management system BMS9 is electrified to work, the battery management system BMS9 of the battery pack 1 recognizes that two charging guns are inserted through a CC2 signal (a third signal acquisition point 17), a voltage signal (a second signal acquisition point 16) and a voltage signal (a fourth signal acquisition point 18), after the self-checking of the battery management system BMS9 has no fault, the battery management system BMS9 controls to close the third charging relay 13 and the fourth charging relay 14 according to the national standard charging protocol flow, double-gun charging is started, the current value requested at the moment is twice the current value of a single gun, and therefore safe and rapid charging is achieved.

The second embodiment:

other technical characteristics are that under the same condition as the first embodiment, the negative output ends of the four charging sockets are electrically connected with the negative end of the battery pack 1 after sequentially passing through the fuse 6, the current sensor 7 and the discharging relay 8; the positive terminal of the battery pack 1 passes through the second discharging relay 10 and then serves as the positive output terminal of the system, and the negative output terminal of the charging socket and the common terminal of the fuse 6 serve as the negative output terminal of the system.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a four socket charging system for machineshop car which characterized in that: the battery management system comprises a battery management system BMS, charging relays, a battery pack and four charging sockets, wherein the positive output ends of the four charging sockets are electrically connected with the positive end of the battery pack through the corresponding charging relays respectively, and the negative output ends of the four charging sockets are electrically connected with the negative end of the battery pack; the four charging sockets are respectively marked as a first socket, a second socket, a third socket and a fourth socket, cc2 signal output ends of the first socket and the second socket are electrically connected with a first cc2 acquisition pin of the battery management system BMS, cc2 signal output ends of the third socket and the fourth socket are electrically connected with a second cc2 acquisition pin of the battery management system BMS, voltage signal output ends of the first socket and the third socket are electrically connected with a first voltage acquisition pin of the battery management system BMS, and voltage signal output ends of the second socket and the fourth socket are electrically connected with a second voltage acquisition pin of the battery management system BMS; and the four charging relays are respectively and electrically connected with corresponding control pins on the battery management system BMS.

2. The four-socket charging system for the engineering vehicle as claimed in claim 1, wherein: the charging socket is a national standard direct current charging socket, and the battery pack is a lithium ion battery pack.

3. The four-outlet charging system for the engineering vehicle as claimed in claim 1 or 2, wherein: the negative output ends of the four charging sockets are electrically connected with the negative end of the battery pack after sequentially passing through the fuse, the current sensor and the discharging relay.