CN215850791U

CN215850791U - Battery system and vehicle

Info

Publication number: CN215850791U
Application number: CN202121619809.4U
Authority: CN
Inventors: 李振光
Original assignee: Henan Liwei New Energy Technology Co ltd
Current assignee: Henan Liwei New Energy Technology Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-02-18
Anticipated expiration: 2031-07-14

Abstract

The utility model provides a battery system and a vehicle, and belongs to the technical field of vehicle charging. The existing charging pile can not charge the battery system when the maximum output voltage of the charging pile is lower than the charging requirement voltage of the battery system, a switch module and a boosting module are arranged on a circuit for connecting a charging socket of a vehicle and a battery pack, and a switching between a movable end and a first immovable end or a second immovable end is realized by controlling the switch module through a boosting controller. During the use, can realize directly charging through the closed end that moves of control switch module and first motionless end, thereby also can make charging current charge to the battery package after stepping up of boost module through the closed end that moves of control switch module and second motionless end. By adopting the utility model, the charging of the battery pack by the charging pile can be realized when the charging demand voltage of the battery pack is greater than the maximum output voltage of the charging pile, and the adaptability between the vehicle and the charging pile is enhanced.

Description

Battery system and vehicle

Technical Field

The utility model relates to a battery system and a vehicle, and belongs to the technical field of vehicle charging.

Background

The charging pile with the appropriate voltage grade is required to be used for charging when the current new energy electric automobile is charged, the charging pile with the 500V grade cannot be used for charging when the charging demand of a battery system exceeds 500V, the charging pile with the charging demand of 750V exists on the current market, and the charging pile with the output voltage of 500V also exists, so that the charging of the current electric automobile is inconvenient. Along with the continuous improvement of battery system voltage, still can appear the electric pile of filling of higher voltage level, lead to the electric pile of filling of each voltage level in the market will exist simultaneously, and how to accomplish fully compatible the charging just seems very important for high demand for charging voltage new forms of energy electric automobile.

At present, the national standard for charging stipulates the charging control process of a new energy electric automobile and a direct-current charging pile, when a battery system and charging parameters of the charging pile are configured, if the charging demand voltage of the battery system is higher than the highest output voltage of the charging pile, the charging pile directly ends the charging process, the battery system cannot obtain the highest output voltage information of the charging pile, and other control operations cannot be carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery system and a vehicle, which are used for solving the problem that a charging pile cannot charge a vehicle battery system when the maximum output voltage of the charging pile is lower than the charging requirement voltage of the vehicle battery system.

In order to accomplish the above object, the present invention provides a battery system including a battery pack, a battery management system, and a charging socket, the charging socket comprises a communication interface connected with the battery management system, a charging interface connected with the battery pack, and a boost controller, a switch module and a boosting module are arranged on a charging line connected with the battery pack and the charging interface, the switch module comprises a movable end, a first immovable end and a second immovable end, the movable end is connected with the charging interface, the second immovable end is connected with the current input end of the boosting module, the first immovable end is connected with the charging end of the battery pack, the current output end of the boosting module is connected with the charging end of the battery pack, the boosting controller is connected with the control end of the switch module in a control mode, the switching movable end is communicated with the first fixed end or the second fixed end, and the battery management system is in communication connection with the boost controller.

Set up switch module and boost module on the circuit that the socket of charging and battery package of vehicle are connected, switch module's the end that moves is connected with the interface that charges of socket of charging, the second does not move the end and the current input end of boost module, first does not move the end and is connected with the end that charges of battery package, the current output end of boost module is connected with the end that charges of battery package, still realize moving the end and the first does not move the switching between the end or the second through boost controller control switch module, battery management system connects boost controller. During the use, can realize directly charging through the closed end that moves of control switch module and the motionless end of second, thereby also can make charging current charge the battery package after stepping up of boost module through the closed end that moves of control switch module and first motionless end.

Further, in the above system, the switch module is a single-pole double-throw relay.

Further, in the above system, the boost module is a DC/DC converter.

The utility model also provides a vehicle, which comprises a battery pack, a battery management system, a charging socket and a boost controller, wherein the charging socket comprises a communication interface connected with the battery management system, a charging interface connected with the battery pack and the boost controller, a switch module and a boosting module are arranged on a charging line connected with the battery pack and the charging interface, the switch module comprises a movable end, a first immovable end and a second immovable end, the movable end is connected with the charging interface, the second immovable end is connected with the current input end of the boosting module, the first immovable end is connected with the charging end of the battery pack, the current output end of the boosting module is connected with the charging end of the battery pack, the boosting controller is connected with the control end of the switch module in a control mode, the switching movable end is communicated with the first fixed end or the second fixed end, and the battery management system is in communication connection with the boost controller.

Further, in the vehicle, the switch module is a single-pole double-throw relay.

Further, in the vehicle, the boost module is a DC/DC converter.

Drawings

FIG. 1 is a schematic diagram of a battery system according to the present invention;

fig. 2 is a schematic structural diagram of a double-pole single-throw relay employed in the present invention.

In the figure, 2 is a charging socket of a vehicle, 21 is a charging interface of the charging socket, 22 is a communication interface of the charging socket, 3 is a switch module, 31 is a movable end of the switch module, 32 is a first stationary end of the switch module, 33 is a second stationary end of the switch module, 41 is a common contact of a single-pole double-throw relay, 42 is a normally closed contact of the single-pole double-throw relay, 43 is a normally open contact of the single-pole double-throw relay, and 44 is a coil of the single-pole double-throw relay.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

The embodiment of the system is as follows:

the battery system of the present invention includes a charging socket 2, a battery pack, and a Battery Management System (BMS) which detects a voltage, a temperature, an SOC (remaining charge capacity), etc. of the battery pack and determines a charging parameter of the battery pack based thereon. As shown in fig. 1, the BMS and the communication interface 22 of the charging socket 2 are connected by a CAN line, and when the charging plug of the dc charging post is inserted into the charging socket of the vehicle, the CAN network between the BMS and the dc charging post is connected. In the utility model, the charging socket adopts a charging socket specified by national standard.

Charging interface 21 on socket 2 and the moving end 31 of switch module 3 (moving end 31 receives switch module control can realize the switching between the motionless end) and be connected, and switch module 3's first motionless end 32 (promptly with move the end and normally open the terminal of being connected) passes through the high-voltage charging wire with the battery package and is connected, and switch module 3's second motionless end 33 is connected with the current input end who is regarded as the DC/DC converter of boost module. The boost controller is connected with the control end of the switch module 3 to realize the switching of the movable end 31 between the immovable ends (32, 33), so that the movable end 31 of the switch module can be communicated with the first immovable end 32 to enable the current to directly flow into the battery pack, and the movable end 31 of the switch module can be communicated with the second immovable end 33 to enable the current to enter the battery pack after passing through the DC/DC converter.

For example, the switch module 3 is a single-pole double-throw relay 4, as shown in fig. 2, a common contact (i.e. a moving end of the switch module) 41 is connected with a charging interface 21 on a charging socket, a normally closed contact 42 (i.e. a first fixed end of the switch module) is connected with a battery pack, a normally open contact 43 (i.e. a second fixed end of the switch module) is connected with a current input end of a DC/DC converter, a controller is connected with a control end of the single-pole double-throw relay 4, the control end is a single-pole double-throw relay coil 44, when a charging current is required to flow through the DC/DC converter, the boost controller can energize the single pole double throw relay coil 44, therefore, the common contact 41 is disconnected from the normally closed contact 42, the common contact 41 is closed with the normally open contact 43, and the charging current can be boosted by the DC/DC converter to charge the battery pack.

The boost controller is connected with a communication terminal of the DC/DC converter through a CAN line and is used for sending instructions to a control chip of the DC/DC converter to execute boost operation. And the current output end of the DC/DC converter is connected with the battery pack through a high-voltage charging wire. When the movable end 31 and the fixed end 33 of the switch module 3 are connected, the current from the charging interface 21 flows into the DC/DC converter, the voltage boosting is completed under the action of the DC/DC converter, and the boosted current flows into the battery pack from the current output end of the DC/DC converter to charge the battery pack.

The signal input end of the boost controller is connected with the BMS through a CAN line, the BMS stores the boost parameter information of the DC/DC converter, when the boost operation is needed to the charging current, an instruction is sent to the boost controller, the movable end 31 and the fixed end 33 of the switch module 3 are closed, and the charging current is boosted by the DC/DC converter and then charges the battery pack.

The embodiment of the vehicle is as follows:

a vehicle adopts the battery system, and the battery system is clearly described in the system embodiment and is not described herein again.

Claims

1. A battery system comprises a battery pack, a battery management system and a charging socket, wherein the charging socket comprises a communication interface connected with the battery management system and a charging interface connected with the battery pack, it is characterized by also comprising a boost controller, a switch module and a boost module are arranged on a charging line connected with the battery pack and the charging interface, the switch module comprises a movable end, a first immovable end and a second immovable end, the movable end is connected with the charging interface, the second immovable end is connected with the current input end of the boosting module, the first immovable end is connected with the charging end of the battery pack, the current output end of the boosting module is connected with the charging end of the battery pack, the boosting controller is connected with the control end of the switch module in a control mode, the switching movable end is communicated with the first fixed end or the second fixed end, and the battery management system is in communication connection with the boost controller.

2. The battery system of claim 1, wherein the switch module is a single pole double throw relay.

3. The battery system of claim 2, wherein the boost module is a DC/DC converter.

4. A vehicle comprises a battery pack, a battery management system and a charging socket, wherein the charging socket comprises a communication interface connected with the battery management system and a charging interface connected with the battery pack, it is characterized by also comprising a boost controller, a switch module and a boost module are arranged on a charging line connected with the battery pack and the charging interface, the switch module comprises a movable end, a first immovable end and a second immovable end, the movable end is connected with the charging interface, the second immovable end is connected with the current input end of the boosting module, the first immovable end is connected with the charging end of the battery pack, the current output end of the boosting module is connected with the charging end of the battery pack, the boosting controller is connected with the control end of the switch module in a control mode, the switching movable end is communicated with the first fixed end or the second fixed end, and the battery management system is in communication connection with the boost controller.

5. The vehicle of claim 4, wherein the switch module is a single pole double throw relay.

6. The vehicle of claim 5, characterized in that the boost module is a DC/DC converter.