Battery pack replacement protection mechanism

Abstract

The utility model provides a battery pack replacement protection mechanism which comprises a controller, a first switch and a detection circuit, the controller is electrically connected with a motor of a target drilling machine, a detachable battery is arranged on the target drilling machine, and the first switch is electrically connected with the controller and used for controlling the motor to be connected or disconnected with the battery or an alternating current power supply. The detection circuit is electrically connected with the controller and used for detecting whether the battery is installed on the target drilling machine or not. The detection circuit generates a first signal when the battery is mounted on the target drilling machine and transmits the first signal to the controller, and the controller controls the first switch to be switched on according to the first signal; the detection circuit generates a second signal when the battery is separated from the target drilling machine and transmits the second signal to the controller, and the controller controls the first switch to be switched off according to the second signal, so that the motor is prevented from continuing to rotate in the process of disassembling the battery.

Description

Technical Field

[0001] The present application belongs to the field of air conditioning technology, and more specifically, to a battery pack protection mechanism for replacement. Background Art

[0002] A drilling machine is usually a device used to drill holes in workpieces. When in use, a battery is usually used to power the drilling machine with DC power. At the same time, the drilling machine can also be connected to AC power through a plug. The AC power is converted into DC after the rectifier current inside the drilling machine is converted to DC to power the drilling machine. During the use of the drilling machine, since the drilling machine only has simple motor start and stop functions, when the battery is unplugged during operation or the motor is shut down for low voltage protection and a new battery pack is replaced, if the drilling machine is connected to AC power through a plug at this time, the motor will run on its own, which may cause personal injury to the operator. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a battery pack protection mechanism for replacement to solve the technical problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a replacement battery pack protection mechanism, including:

[0005] A controller electrically connected to a motor of a target drilling machine, wherein the target drilling machine is provided with a detachable battery;

[0006] A first switch, electrically connected to the controller, for controlling the motor to be connected or disconnected from the battery or the AC power source;

[0007] A detection circuit is electrically connected to the controller and is used to detect whether the battery is installed on the target drilling machine; the detection circuit generates a first signal when the battery is installed on the target drilling machine, and transmits the first signal to the controller, and the controller controls the first switch to be turned on according to the first signal; the detection circuit generates a second signal when the battery is separated from the target drilling machine, and transmits the second signal to the controller, and the controller controls the first switch to be turned off according to the second signal.

[0008] Optionally, a first detection point and a second detection point are provided on the detection circuit;

[0009] When the first detection point abuts against the positive electrode of the battery and the second detection point abuts against the negative electrode of the battery, the detection circuit generates the first signal;

[0010] When the first detection point is separated from the positive electrode of the battery and the second detection point is separated from the negative electrode of the battery, the detection circuit generates the second signal.

[0011] Optionally, a second switch is provided in the detection circuit, and the second switch is electrically connected to the first switch;

[0012] When the detection circuit generates the first signal, the second switch and the first switch are controlled to be turned on, so that the motor is connected to the battery or the AC power supply through the first switch;

[0013] When the detection circuit generates the second signal, the second switch is controlled to be turned off to disconnect the motor from the battery or the AC power source.

[0014] Optionally, the second switch is connected in series with the first switch.

[0015] Optionally, the second switch is located between the first switch and the controller.

[0016] The beneficial effects of the battery pack replacement protection mechanism provided in the present application are as follows: compared with the prior art, the battery pack replacement protection mechanism of the present application includes a controller, a first switch and a detection circuit, the controller is electrically connected to the motor of the target drilling machine, the target drilling machine is provided with a removable battery, the first switch is electrically connected to the controller, and is used to control the connection or disconnection of the motor and the battery or AC power supply, the detection circuit is electrically connected to the controller, and is used to detect whether the battery is installed on the target drilling machine; the detection circuit generates a first signal when the battery is installed on the target drilling machine, and transmits the first signal to the controller, and the controller controls the first switch to be turned on according to the first signal; the detection circuit generates a second signal when the battery is separated from the target drilling machine, and transmits the second signal to the controller, and the controller controls the first switch to be turned off according to the second signal, thereby preventing the motor from continuing to rotate during the process of removing the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of a battery pack protection mechanism for replacement provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are:

[0020] 1. Controller; 2. First switch; 3. Detection circuit; 4. Motor; 5. Battery; 6. Second switch. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1 , the battery pack replacement protection mechanism provided in the embodiment of the present application is now described.

[0026] A protection device for replacing a battery pack 5 of a drilling machine comprises a controller 1, a first switch 2 and a detection circuit 3.

[0027] The controller 1 is electrically connected to the motor 4 of the target drilling machine, and the target drilling machine is provided with a detachable battery 5. The first switch 2 is electrically connected to the controller 1, and is used to control the motor 4 to be connected or disconnected with the battery 5 or the AC power supply. The detection circuit 3 is electrically connected to the controller 1, and is used to detect whether the battery 5 is installed on the target drilling machine; the detection circuit 3 generates a first signal when the battery 5 is installed on the target drilling machine, and transmits the first signal to the controller 1, and the controller 1 controls the first switch 2 to be turned on according to the first signal; the detection circuit 3 generates a second signal when the battery 5 is separated from the target drilling machine, and transmits the second signal to the controller 1, and the controller 1 controls the first switch 2 to be turned off according to the second signal.

[0028] The detection circuit 3 is provided with a first detection point and a second detection point. When the first detection point abuts against the positive electrode of the battery 5 and the second detection point abuts against the negative electrode of the battery 5, the detection circuit 3 generates a first signal. When the first detection point is separated from the positive electrode of the battery 5 and the second detection point is separated from the negative electrode of the battery 5, the detection circuit 3 generates a second signal.

[0029] A second switch 6 is provided in the detection circuit 3 . The second switch 6 is connected in series with the first switch 2 , and the second switch 6 is located between the first switch 2 and the controller 1 .

[0030] When the detection circuit 3 generates a first signal, the second switch 6 and the first switch 2 are controlled to be turned on, so that the motor 4 is connected to the battery 5 or the AC power supply through the first switch 2. When the detection circuit 3 generates a second signal, the second switch 6 is controlled to be turned off, so that the motor 4 is disconnected from the battery 5 or the AC power supply.

[0031] Compared with the prior art, the protection device for replacing the battery 5 pack of the drilling machine in the present application includes a controller 1, a first switch 2 and a detection circuit 3. The controller 1 is electrically connected to the motor 4 of the target drilling machine, and the target drilling machine is provided with a detachable battery 5. The first switch 2 is electrically connected to the controller 1, and is used to control the connection or disconnection of the motor 4 and the battery 5 or the AC power supply. The detection circuit 3 is electrically connected to the controller 1, and is used to detect whether the battery 5 is installed on the target drilling machine; the detection circuit 3 generates a first signal when the battery 5 is installed on the target drilling machine, and transmits the first signal to the controller 1, and the controller 1 controls the first switch 2 to be turned on according to the first signal; the detection circuit 3 generates a second signal when the battery 5 is separated from the target drilling machine, and transmits the second signal to the controller 1, and the controller 1 controls the first switch 2 to be turned off according to the second signal, thereby preventing the motor 4 from continuing to rotate during the process of disassembling the battery 5.

[0032] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery pack protection mechanism for replacement, characterized in that: include: A controller electrically connected to a motor of a target drilling machine, wherein the target drilling machine is provided with a detachable battery; A first switch, electrically connected to the controller, for controlling the motor to be connected or disconnected from the battery or AC power source; A detection circuit is electrically connected to the controller and is used to detect whether the battery is installed on the target drilling machine; the detection circuit generates a first signal when the battery is installed on the target drilling machine, and transmits the first signal to the controller, and the controller controls the first switch to be turned on according to the first signal; the detection circuit generates a second signal when the battery is separated from the target drilling machine, and transmits the second signal to the controller, and the controller controls the first switch to be turned off according to the second signal.

2. The replacement battery pack protection mechanism according to claim 1, characterized in that: The detection circuit is provided with a first detection point and a second detection point; When the first detection point abuts against the positive electrode of the battery and the second detection point abuts against the negative electrode of the battery, the detection circuit generates the first signal; When the first detection point is separated from the positive electrode of the battery and the second detection point is separated from the negative electrode of the battery, the detection circuit generates the second signal.

3. The replacement battery pack protection mechanism according to claim 2, characterized in that: A second switch is provided in the detection circuit, and the second switch is electrically connected to the first switch; When the detection circuit generates the first signal, the second switch and the first switch are controlled to be turned on, so that the motor is connected to the battery or the AC power supply through the first switch; When the detection circuit generates the second signal, the second switch is controlled to be turned off to disconnect the motor from the battery or the AC power source.

4. The replacement battery pack protection mechanism according to claim 3, characterized in that: The second switch is connected in series with the first switch.

5. The replacement battery pack protection mechanism according to claim 4, characterized in that: The second switch is located between the first switch and the controller.

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