A battery switching device

Abstract

The utility model provides a kind of battery switching device, including working battery pack and standby battery pack, further including switching module and control module, the switching module includes switching box, first circuit breaker and second circuit breaker, the switching box includes base and cover, the cover is arranged on base and is rotatably connected with base, the first circuit breaker and second circuit breaker are all arranged in base, the working battery pack is connected into main circuit by the first circuit breaker in base, the standby battery pack is connected into main circuit by the second circuit breaker in base, the first circuit breaker, second circuit breaker are electrically connected with control module. It can be realized that battery pack and standby battery pack are short-circuit parallel by two circuit breakers, ensure that direct current bus always has battery pack power supply.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery switching device. Background Technology

[0002] For wind farms operating with a single battery bank connected to a DC system, the battery verification charge-discharge test requires disconnecting the currently operating battery bank and then connecting the backup battery bank to the system. This process takes approximately 30 minutes. If the AC power is lost within these 30 minutes, the entire DC power supply will be lost, and the relay protection devices will fail to operate, with potentially disastrous consequences. The same problem exists when the battery bank is reconnected to the DC system after the charge-discharge test is completed. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a battery switching device to solve the above-mentioned problems in the prior art.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A battery switching device includes a working battery pack and a standby battery pack, as well as a switching module and a control module. The switching module includes a switching box, a first circuit breaker, and a second circuit breaker. The switching box includes a base and a cover plate. The cover plate is disposed on the base and rotatably connected to the base. The first circuit breaker and the second circuit breaker are both disposed inside the base. The working battery pack is connected to the main circuit through the first circuit breaker inside the base, and the standby battery pack is connected to the main circuit through the second circuit breaker inside the base. Both the first circuit breaker and the second circuit breaker are electrically connected to the control module.

[0006] Furthermore, the base is provided with a working battery pack terminal, a spare battery pack terminal, and a main circuit terminal. The working battery pack terminal is electrically connected to the first circuit breaker, and the spare battery pack terminal is electrically connected to the second circuit breaker. Both the first and second circuit breakers are electrically connected to the main circuit terminal.

[0007] Furthermore, the switching box has a wire inlet at the contact point between the base and the cover, and waterproof rubber strips are provided at both the contact point between the base and the cover and on the wire inlet.

[0008] Furthermore, diodes are installed between the working battery pack terminals and the first circuit breaker, as well as between the standby battery pack and the second circuit breaker.

[0009] Furthermore, a first voltmeter is provided between the working battery pack and the first circuit breaker, and the first voltmeter is electrically connected to the control module.

[0010] Furthermore, a second voltmeter is provided between the backup battery pack and the second circuit breaker, and the second voltmeter is electrically connected to the control module.

[0011] Furthermore, a third voltmeter is provided between the first circuit breaker and the second circuit breaker in the main circuit, and the third voltmeter is electrically connected to the control module.

[0012] Furthermore, the first voltmeter, the second voltmeter, and the third voltmeter are all mounted on the cover plate.

[0013] Furthermore, the cover plate is also equipped with LED lights and a buzzer, both of which are electrically connected to the control module.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention provides a battery switching device that enables short-term parallel connection of a battery bank and a standby battery bank via two circuit breakers, ensuring that the DC bus is always powered by the battery bank. This effectively avoids the risk of DC bus voltage loss during battery switching, due to loss of station AC power, or charger malfunction. The switching box facilitates observation of line voltage changes and is also waterproof. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the circuit structure of a battery switching device provided by this utility model. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The listed embodiments are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0019] Example 1

[0020] Reference Figure 1This utility model provides a battery switching device, including a working battery pack and a standby battery pack, as well as a switching module and a control module. The switching module includes a switching box, a first circuit breaker, and a second circuit breaker. The switching box includes a base and a cover plate. The cover plate is disposed on the base and rotatably connected to the base. The first circuit breaker and the second circuit breaker are both disposed inside the base. The working battery pack is connected to the main circuit through the first circuit breaker inside the base, and the standby battery pack is connected to the main circuit through the second circuit breaker inside the base. Both the first circuit breaker and the second circuit breaker are electrically connected to the control module.

[0021] For example, the working battery pack and the standby battery pack are connected to the main circuit via a first circuit breaker and a second circuit breaker, respectively, and the power supply of the working battery pack and the standby battery pack is switched by controlling the first circuit breaker and the second circuit breaker through a control module.

[0022] The base is equipped with a working battery pack terminal, a spare battery pack terminal, and a main circuit terminal. The working battery pack terminal is electrically connected to the first circuit breaker, and the spare battery pack terminal is electrically connected to the second circuit breaker. Both the first and second circuit breakers are electrically connected to the main circuit terminal.

[0023] The switching box has a wire port at the contact point between the base and the cover plate, and waterproof rubber strips are provided at both the contact point between the base and the cover plate and on the wire port.

[0024] For example, when connecting the wiring, first open the cover, and then connect the working battery pack, the backup battery pack, and the main circuit by inserting wires through the wire openings into the base, and finally connect the wires to the corresponding terminals. Finally, close the cover. The waterproof rubber strips between the cover and the base, as well as the waterproof rubber strips on the wire openings, will prevent rainwater from entering the base.

[0025] Diodes are installed between the working battery bank terminals and the first circuit breaker, as well as between the standby battery bank and the second circuit breaker.

[0026] For example, setting up a diode can protect the circuit from damage caused by a short circuit.

[0027] Example 2

[0028] Based on the foregoing embodiments, the difference between this embodiment and the foregoing embodiments is as follows:

[0029] A first voltmeter is installed between the working battery pack and the first circuit breaker, and the first voltmeter is electrically connected to the control module.

[0030] A second voltmeter is installed between the backup battery pack and the second circuit breaker, and the second voltmeter is electrically connected to the control module.

[0031] The main circuit has a third voltmeter installed between the first circuit breaker and the second circuit breaker, and the third voltmeter is electrically connected to the control module.

[0032] The first voltmeter, the second voltmeter, and the third voltmeter are all mounted on the cover plate.

[0033] For example, the control module determines the switching between the working battery pack and the standby battery pack by measuring the values ​​of the first voltmeter, the second voltmeter and the third voltmeter.

[0034] The cover plate is also equipped with LED lights and a buzzer, both of which are electrically connected to the control module.

[0035] For example, when the values ​​measured by the first, second, and third voltmeters are abnormal, the control module controls the LED lights and buzzers to be activated to alert the staff.

[0036] It should be noted that the components used in this application, such as the first circuit breaker, second circuit breaker, first voltmeter, second voltmeter, third voltmeter, control module, LED light, and buzzer, are all existing electronic components in the art. Those skilled in the art can understand the circuit structure and interconnection structure of these electronic components based on existing publicly available technical knowledge and materials. This application's embodiments will not elaborate on this further, and those skilled in the art can freely select appropriate models as needed. This embodiment does not impose specific limitations here.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery switching device, comprising a working battery pack and a standby battery pack, characterized in that, It also includes a switching module and a control module. The switching module includes a switching box, a first circuit breaker, and a second circuit breaker. The switching box includes a base and a cover plate. The cover plate is mounted on the base and rotatably connected to the base. The first circuit breaker and the second circuit breaker are both located inside the base. The working battery pack is connected to the main circuit through the first circuit breaker inside the base, and the standby battery pack is connected to the main circuit through the second circuit breaker inside the base. Both the first circuit breaker and the second circuit breaker are electrically connected to the control module.

2. The battery switching device according to claim 1, characterized in that, The base is equipped with a working battery pack terminal, a spare battery pack terminal, and a main circuit terminal. The working battery pack terminal is electrically connected to the first circuit breaker, and the spare battery pack terminal is electrically connected to the second circuit breaker. Both the first and second circuit breakers are electrically connected to the main circuit terminal.

3. The battery switching device according to claim 1, characterized in that, The switching box has a wire port at the contact point between the base and the cover plate, and waterproof rubber strips are provided at both the contact point between the base and the cover plate and on the wire port.

4. A battery switching device according to claim 1, characterized in that, Diodes are installed between the working battery bank terminals and the first circuit breaker, as well as between the standby battery bank and the second circuit breaker.

5. A battery switching device according to claim 4, characterized in that, A first voltmeter is installed between the working battery pack and the first circuit breaker, and the first voltmeter is electrically connected to the control module.

6. A battery switching device according to claim 5, characterized in that, A second voltmeter is installed between the backup battery pack and the second circuit breaker, and the second voltmeter is electrically connected to the control module.

7. A battery switching device according to claim 6, characterized in that, The main circuit has a third voltmeter installed between the first circuit breaker and the second circuit breaker, and the third voltmeter is electrically connected to the control module.

8. A battery switching device according to claim 7, characterized in that, The first voltmeter, the second voltmeter, and the third voltmeter are all mounted on the cover plate.

9. A battery switching device according to claim 1, characterized in that, The cover plate is also equipped with LED lights and a buzzer, both of which are electrically connected to the control module.

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