Battery pack and electronic equipment with same

Abstract

The embodiment of the utility model relates to a battery pack, and discloses a battery pack and electronic equipment with the battery pack. The battery pack comprises a first battery pack, a second battery pack, a first terminal, a second terminal, a third terminal and a fourth terminal which are respectively connected with positive electrodes and negative electrodes of the first battery pack and the second battery pack, and a fifth terminal and a sixth terminal which are respectively connected with positive electrodes and negative electrodes of the first battery pack and the second battery pack, the battery pack further comprises an output voltage switching module which is connected with the positive electrode of the first battery pack and the negative electrode of the second battery pack; when the first terminal, the second terminal, the third terminal and the fourth terminal are communicated with first external equipment at the same time, the output voltage switching module is in an open circuit state, and the battery pack outputs first voltage to the first external equipment; and when the fifth terminal and the sixth terminal are communicated with the second external equipment at the same time, the output voltage switching module is in a conducting state, and the battery pack outputs second voltage to the second external equipment.

Description

TECHNICAL FIELD

[0001] The utility model embodiment relates to battery pack, especially relates to a battery pack and electronic equipment with battery pack. BACKGROUND

[0002] Because the rated working voltage of electronic equipment is different, the current battery pack structure usually needs to output variable voltage. In order to realize the controllable output voltage value, a manually adjusted mechanical switch is usually arranged in the battery pack, and the switching of the output voltage of the battery pack is realized by the closing and opening of the mechanical switch.

[0003] The inventor finds that the switching mode of the output voltage of the battery pack controlled by the mechanical switch at least has the following problems: the mechanical switch is seriously worn after long time use, which can easily cause poor contact and make the battery pack unable to accurately switch to the appropriate output voltage. In addition, the manual adjustment mode is seriously affected by human factors, if the appropriate voltage is forgotten to switch before the battery pack is installed, the high-voltage battery pack is connected with the low-rated voltage device, which can damage the electronic equipment and even cause safety hazards. UTILITY MODEL CONTENT

[0004] The purpose of the utility model embodiment is to provide a battery pack and electronic equipment with battery pack, the battery pack is connected with different external devices through independently arranged different terminals, and the battery pack can intelligently output different voltages to different external devices.

[0005] To solve the above technical problems, the embodiment of the utility model provides a battery pack, which comprises: a first battery pack, a second battery pack, a first terminal connected with the positive electrode of the first battery pack, a second terminal connected with the positive electrode of the second battery pack, a third terminal connected with the negative electrode of the first battery pack, a fourth terminal connected with the negative electrode of the second battery pack, a fifth terminal connected with the positive electrode of one of the first battery pack and the second battery pack, and a sixth terminal connected with the negative electrode of the other of the first battery pack and the second battery pack; the battery pack further comprises: an output voltage switching module, which is used to switch the communication state of the first battery pack and the second battery pack; when the first terminal, the second terminal, the third terminal and the fourth terminal are in communication with a first external device at the same time, the output voltage switching module is in an open circuit state, and the battery pack outputs a first voltage to the first external device; when the fifth terminal and the sixth terminal are in communication with a second external device at the same time, the output voltage switching module is in a conduction state, and the battery pack outputs a second voltage to the second external device.

[0006] The embodiment of the utility model provides a kind of electronic equipment with battery pack, comprising: first external device, and the battery pack for the first external device provides first voltage;The first external device includes first positive pole connecting piece and first negative pole connecting piece;The first positive pole connecting piece is simultaneously electrically connected with the first terminal and the second terminal of the battery pack, and the first negative pole connecting piece is simultaneously electrically connected with the third terminal and the fourth terminal of the battery pack.

[0007] The embodiment of the utility model provides a kind of electronic equipment with battery pack, comprising: second external device, and the battery pack for the second external device provides second voltage;The second external device includes second positive pole connecting piece and second negative pole connecting piece;The second positive pole connecting piece is electrically connected with the fifth terminal of the battery pack, and the second negative pole connecting piece is electrically connected with the sixth terminal of the battery pack.

[0008] The embodiment of the utility model relative to relevant art, the first terminal, the second terminal, the third terminal and the fourth terminal are respectively connected and led out with the positive pole and the negative pole of the first battery pack and the second battery pack.The positive pole output end of battery pack by simultaneously connecting the first terminal and the second terminal, and the negative pole output end of battery pack by simultaneously connecting the third terminal and the fourth terminal, can realize the parallel output of the first battery pack and the second battery pack.In addition, the fifth terminal of the positive pole of one of the first battery pack and the second battery pack and the sixth terminal of the negative pole of the other battery pack in the first battery pack and the second battery pack, the communication state of the first battery pack and the second battery pack is established by output voltage switching module, the output of battery pack is constructed by connecting the fifth terminal and the sixth terminal, and the series circuit of the first battery pack and the second battery pack is constructed, and then the different voltage of the above parallel circuit and series circuit to different external equipment is realized.The switching of battery pack output voltage is realized by the connection of external equipment and the different terminal of battery pack and the communication state automatic switching of output voltage switching module, the whole process does not need the cooperation of mechanical switch, reduces the cost and loss of mechanical switch, and reduces the human consumption of circuit switching in battery pack, so that output voltage switching is more intelligent.

[0009] In addition, the battery pack further comprises: a signal input terminal, configured to receive an electrical signal for controlling the output voltage switching module to switch to a conduction state when the second external device is in communication.

[0010] In addition, the first terminal and the second terminal are arranged in sequence in a direction perpendicular to the surface of the circuit board of the battery pack, and the distance between the first terminal and the second terminal is less than a first preset threshold value;The third terminal and the fourth terminal are arranged in sequence in a direction perpendicular to the surface of the circuit board of the battery pack, and the distance between the third terminal and the fourth terminal is less than a second preset threshold value.

[0011] In addition, the output voltage switching module is a MOS switch.

[0012] In addition, the first positive pole connecting piece is a first positive pole tab, and the first negative pole connecting piece is a first negative pole tab; the first positive pole tab is inserted into the first terminal and the second terminal simultaneously, and the first negative pole tab is inserted into the third terminal and the fourth terminal simultaneously.

[0013] In addition, the second positive pole connecting piece is a second positive pole tab, and the second negative pole connecting piece is a second negative pole tab; the second positive pole tab is inserted into the fifth terminal, and the second negative pole tab is inserted into the sixth terminal.

[0014] In addition, the second external device further comprises a signal output connecting piece; the signal output connecting piece is electrically connected with a signal input terminal of the battery pack, and the signal output connecting piece outputs an electric signal to control the output voltage switching module of the battery pack to switch from a cut-off state to a conducting state.

[0015] In addition, the signal output connecting piece is a signal output tab, and the signal output tab is inserted into the signal input terminal. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the figures that are part of this disclosure and which are illustrative, but not restrictive, of the embodiments, wherein elements having the same reference number designates like elements, unless otherwise stated, the figures of the drawings do not constitute a proportional limitation.

[0017] Figure 1 is a circuit connection schematic diagram of a battery pack according to the first embodiment of the present utility model;

[0018] Figure 2 is another circuit connection schematic diagram of a battery pack according to the first embodiment of the present utility model;

[0019] Figure 3 is a structure schematic diagram of a battery pack according to the first embodiment of the present utility model;

[0020] Figure 4 is another structure schematic diagram of a battery pack according to the first embodiment of the present utility model;

[0021] Figure 5 is a structure schematic diagram of an electronic device with a battery pack according to the second embodiment of the present utility model;

[0022] Figure 6 is a structure schematic diagram of an electronic device with a battery pack according to the third embodiment of the present utility model;

[0023] Figure 7 is a structural schematic view of an electronic device with a battery pack according to a third embodiment of the present application. DETAILED DESCRIPTION

[0024] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0025] The division of the following embodiments is for the convenience of description, and should not constitute any limitation on the specific implementation of the present application. The embodiments can be combined and referenced with each other on the premise of no contradiction.

[0026] The first embodiment of the present application relates to a battery pack, as shown in Figure 1 and Figure 2 , comprising: a first battery group, a second battery group, a first terminal 1 connected to the positive electrode of the first battery group, a second terminal 2 connected to the positive electrode of the second battery group, a third terminal 3 connected to the negative electrode of the first battery group, a fourth terminal 4 connected to the negative electrode of the second battery group, a fifth terminal 5 connected to the positive electrode of one of the first battery group and the second battery group, and a sixth terminal 6 connected to the negative electrode of the other of the first battery group and the second battery group. As shown in Figure 1 , it is a schematic diagram of the circuit structure when the fifth terminal 5 is connected to the positive electrode of the second battery group and the sixth terminal 6 is connected to the negative electrode of the first battery group, Figure 2 , it is a schematic diagram of the circuit structure when the fifth terminal 5 is connected to the positive electrode of the first battery group and the sixth terminal 6 is connected to the negative electrode of the second battery group.

[0027] The battery pack further comprises: an output voltage switching module, the output voltage switching module being used to switch the communication state of the first battery group and the second battery group; when the first terminal 1, the second terminal 2, the third terminal 3, and the fourth terminal 4 are in communication with the first external device at the same time, the output voltage switching module is in an open state, and the battery pack outputs a first voltage to the first external device; when the fifth terminal 5 and the sixth terminal 6 are in communication with the second external device at the same time, the output voltage switching module is in a closed state, and the battery pack outputs a second voltage to the second external device.

[0028] With the first battery pack and the second battery pack output voltage both being 20V as an example, when the first terminal 1 and the second terminal 2 simultaneously communicate with the positive terminal of the first external device, and the third terminal 3 and the fourth terminal 4 simultaneously communicate with the negative terminal of the first external device, the fifth terminal 5 and the sixth terminal 6 are both not communicated, and the output voltage switching module is in the off state, the first battery pack and the second battery pack are in the parallel state, and the battery pack outputs the first voltage 20V to the first external device. When the fifth terminal 5 communicates with the positive terminal of the second external device, the sixth terminal communicates with the negative terminal of the second external device, and the first terminal 1, the second terminal 2, the third terminal 3 and the fourth terminal 4 are all in the non-communication state, the output voltage switching module is in the on state, the first battery pack and the second battery pack are in the series state, and the battery pack outputs the second voltage 40V to the second external device.

[0029] In actual application, the output voltage of the first battery pack and the second battery pack can be adjusted according to the output voltage requirement. In addition, the first battery pack and the second battery pack can be a single power supply or a component composed of multiple power supplies through series connection or parallel connection, and the first battery pack and the second battery pack are any devices that can provide output voltage.

[0030] Compared with the related art, the first terminal, the second terminal, the third terminal and the fourth terminal connected to the positive and negative poles of the first battery pack and the second battery pack are connected to the positive output end of the battery pack through the first terminal and the second terminal, and the negative output end of the battery pack through the third terminal and the fourth terminal. By connecting the first terminal and the second terminal, the third terminal and the fourth terminal, the parallel output of the first battery pack and the second battery pack can be realized. In addition, the fifth terminal connected to the positive pole of one of the first battery pack and the second battery pack and the sixth terminal connected to the negative pole of the other battery pack of the first battery pack and the second battery pack establish the communication state of the first battery pack and the second battery pack through the output voltage switching module, and the series circuit of the first battery pack and the second battery pack is constructed by connecting the fifth terminal and the sixth terminal as the output of the battery pack, thereby realizing the output of different voltages to different external devices in the above parallel circuit and series circuit. The output voltage switching of the battery pack is realized by the automatic switching of the communication state of the output voltage switching module and the connection of the different terminals of the external device and the battery pack, the whole process does not need the cooperation of the mechanical switch, reduces the cost and loss of the mechanical switch, and reduces the human consumption of the circuit switching in the battery pack, making the output voltage switching more intelligent.

[0031] In addition, as Figure 2As shown, the first terminal 1 and the second terminal 2 are arranged in sequence in the direction perpendicular to the surface of the circuit board of the battery pack, and the distance between the first terminal and the second terminal is less than a first preset threshold value; the third terminal 3 and the fourth terminal 4 are arranged in sequence in the direction perpendicular to the surface of the circuit board of the battery pack, and the distance between the third terminal 3 and the fourth terminal 4 is less than a second preset threshold value. The first terminal 1 and the second terminal 2 are arranged in close proximity, which facilitates the first terminal 1 and the second terminal 2 to be connected to the first positive connection member of the first external device at the same time. Similarly, the third terminal 3 and the fourth terminal 4 are arranged in close proximity, which facilitates the third terminal 3 and the fourth terminal 4 to be connected to the first negative connection member of the first external device at the same time. The first terminal 1, the second terminal 2, the third terminal 3 and the fourth terminal 4 can all be fish-mouth-shaped terminals obtained by bending a metal sheet. When electrically connected to the first external device, the connection member of the first external device is inserted into the fish-mouth-shaped terminal at the tip thereof to complete the electrical connection. Since the first terminal 1 and the second terminal 2 are arranged in sequence in the direction perpendicular to the surface of the circuit board of the battery pack, and the fish-mouth-shaped openings of the two terminals are in the same direction, the connection member of the first external device can be inserted into the tips of the fish-mouth-shaped terminals of both the first terminal 1 and the second terminal 2 at the same time. Moreover, since the distance between the first terminal 1 and the second terminal 2 is less than the first preset threshold value, the sum of the contact areas of the connection member of the first external device with the first terminal 1 and the second terminal 2 is not much different from the contact area of the connection member with ordinary terminals (the fifth terminal 5 and the sixth terminal 6). In the case of small changes in the contact area, the parallel output of the battery pack is achieved, and the damage of the device caused by excessive heat due to a small contact area is avoided. The distance between the first terminal and the second terminal can be understood as the distance between the first terminal and the second terminal in the direction perpendicular to the surface of the circuit board. The distance between the first terminal and the second terminal can be set to be in the range of 1 mm to 1.5 mm, for example, the distance between the first terminal and the second terminal is set to be 1.1 mm. Based on the assembly requirements, in order to avoid a small contact area, the first preset threshold value set for the upper limit of the distance between the first terminal and the second terminal can be 1.5 mm. In addition, in order to avoid the circuit conduction between the first terminal and the second terminal due to a small distance, a third preset threshold value of 1 mm can be additionally set for the lower limit of the distance between the first terminal and the second terminal. Similarly, the third terminal 3 and the fourth terminal 4 are arranged in the same way as the first terminal 1 and the second terminal 2 described above. The second preset threshold value set for the upper limit of the distance between the third terminal and the fourth terminal can be 1.5 mm, and the fourth preset threshold value set for the lower limit of the distance between the third terminal and the fourth terminal can be 1 mm. Details are not repeated here.

[0032] In addition, as Figure 4As shown, the battery pack further comprises a signal input terminal 7, which is used to receive an electrical signal for controlling the output voltage switching module to switch to the conducting state when communicating with the second external device. When the signal input terminal 7 communicates with the second external device, the signal output connector of the second external device is connected to the signal input terminal 7 and sends an electrical signal to the signal input terminal 7. The signal input terminal 7 receives the electrical signal and transmits it to the output voltage switching module. At the same time, the output voltage switching module switches the communication state between the first battery pack and the second battery pack from the original open circuit state to the conducting state. The first battery pack and the second battery pack are connected in series, and the second voltage of the battery pack in series is output to the outside world through the fifth terminal 5 and the sixth terminal 6.

[0033] In addition, the output voltage switching module can be a MOS switch. Compared with the traditional mechanical switch, the MOS switch controlled by the electrical signal can well avoid the phenomenon of poor contact caused by aging after long-term use. Moreover, the inductive precision of the MOS switch is high, and the feedback can be quickly made when the electrical signal is recognized, so that the appropriate voltage can be switched after the battery pack is connected with the external device.

[0034] In addition, the first voltage output by the output voltage switching module in the initial state (open circuit state) of the circuit structure of the battery pack is usually less than the second voltage output by the output voltage switching module in the remaining state (conducting state) of the circuit structure of the battery pack. In this way, after the external device is installed with the battery pack, even if the voltage switching module does not timely make switching action, the lower first voltage will not cause serious damage to the external device, and the external device connected with the battery pack can be prevented from suddenly bearing the output voltage higher than the rated voltage, thereby causing a safety hazard.

[0035] The second embodiment of the utility model relates to an electronic device with a battery pack, such as Figure 5 As shown, it comprises: a first external device, and the above-mentioned battery pack for providing the first external device with a first voltage; the first external device comprises a first positive electrode connector 8 and a first negative electrode connector 9; the first positive electrode connector 8 is electrically connected with the first terminal and the second terminal of the battery pack at the same time, and the first negative electrode connector 9 is electrically connected with the third terminal and the fourth terminal of the battery pack at the same time.

[0036] In addition, the first positive electrode connector is a first positive electrode sheet, and the first negative electrode connector is a first negative electrode sheet; the first positive electrode sheet is inserted into the first terminal and the second terminal at the same time, and the first negative electrode sheet is inserted into the third terminal and the fourth terminal at the same time. The sheet mentioned here is a metal sheet, which can expand the contact area with the terminals of the battery pack.

[0037] Compared with the related art, the electronic device with the battery pack provided in the embodiment has the battery pack provided in the foregoing embodiment, and thus has the technical effects provided in the foregoing embodiment, which will not be repeated here.

[0038] The third embodiment of the utility model relates to an electronic device with a battery pack, as shown in the accompanying drawings, comprising: a second external device, and the battery pack providing a second voltage for the second external device;The second external device comprises a second positive electrode connecting piece 10 and a second negative electrode connecting piece 11;The second positive electrode connecting piece 10 is electrically connected with the fifth terminal of the battery pack, and the second negative electrode connecting piece 11 is electrically connected with the sixth terminal of the battery pack. Figure 6

[0039] In addition, the second positive electrode connecting piece is a second positive electrode tab, and the second negative electrode connecting piece is a second negative electrode tab;The second positive electrode tab is inserted into the fifth terminal, and the second negative electrode tab is inserted into the sixth terminal.

[0040] In addition, as shown in the accompanying drawings, the second external device further comprises: a signal output connecting piece 12;The signal output connecting piece 12 is electrically connected with the signal input terminal of the battery pack, and the signal output connecting piece outputs an electric signal to control the output voltage switching module of the battery pack to switch from the off state to the on state. Figure 7

[0041] In addition, the signal output connecting piece is a signal output tab, and the signal output tab is inserted into the signal input terminal.

[0042] Compared with the related art, the electronic device with the battery pack provided in the embodiment has the battery pack provided in the foregoing embodiment, and thus has the technical effects provided in the foregoing embodiment, which will not be repeated here.

[0043] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for implementing the utility model, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the utility model.​​

Claims

1. A battery pack, characterized by, The battery pack comprises: a first battery pack, a second battery pack, a first terminal connected to the positive electrode of the first battery pack, a second terminal connected to the positive electrode of the second battery pack, a third terminal connected to the negative electrode of the first battery pack, a fourth terminal connected to the negative electrode of the second battery pack, a fifth terminal connected to the positive electrode of one of the first battery pack and the second battery pack, and a sixth terminal connected to the negative electrode of the other of the first battery pack and the second battery pack; the battery pack further comprises: an output voltage switching module for switching the communication state of the first battery pack and the second battery pack; when the first terminal, the second terminal, the third terminal, and the fourth terminal are simultaneously in communication with a first external device, the output voltage switching module is in an open state, and the battery pack outputs a first voltage to the first external device; when the fifth terminal and the sixth terminal are simultaneously in communication with a second external device, the output voltage switching module is in a closed state, and the battery pack outputs a second voltage to the second external device.

2. The battery pack of claim 1, wherein, Further comprising: a signal input terminal for receiving an electrical signal for controlling the output voltage switching module to switch to the closed state when in communication with the second external device.

3. The battery pack of claim 1 or 2, wherein: the first terminal and the second terminal are arranged in sequence in a direction perpendicular to the surface of the circuit board of the battery pack, and the distance between the first terminal and the second terminal is less than a first predetermined threshold; the third terminal and the fourth terminal are arranged in sequence in a direction perpendicular to the surface of the circuit board of the battery pack, and the distance between the third terminal and the fourth terminal is less than a second predetermined threshold.

4. The battery pack of claim 1, wherein, the output voltage switching module is a MOS switch.

5. An electronic device with a battery pack, the electronic device comprising: Comprising: a first external device, and a battery pack as claimed in any one of claims 1 to 4 for providing a first voltage to the first external device; the first external device comprises a first positive electrode connecting member and a first negative electrode connecting member; the first positive electrode connecting member is electrically connected to the first terminal and the second terminal of the battery pack at the same time, and the first negative electrode connecting member is electrically connected to the third terminal and the fourth terminal of the battery pack at the same time.

6. The electronic device with a battery pack of claim 5, wherein, the first positive electrode connecting member is a first positive electrode tab, and the first negative electrode connecting member is a first negative electrode tab; the first positive electrode tab is inserted into the first terminal and the second terminal at the same time, and the first negative electrode tab is inserted into the third terminal and the fourth terminal at the same time.

7. An electronic device with a battery pack, the electronic device comprising: Comprising: a second external device, and a battery pack as claimed in any one of claims 1 to 4 for providing a second voltage to the second external device; the second external device comprises a second positive electrode connecting member and a second negative electrode connecting member; the second positive electrode connecting member is electrically connected to the fifth terminal of the battery pack, and the second negative electrode connecting member is electrically connected to the sixth terminal of the battery pack.

8. The electronic device with a battery pack of claim 7, wherein, the second positive electrode connecting member is a second positive electrode tab, and the second negative electrode connecting member is a second negative electrode tab; the second positive electrode tab is inserted into the fifth terminal, and the second negative electrode tab is inserted into the sixth terminal.

9. The electronic device with a battery pack of claim 7, wherein, the second external device further comprises a signal output connecting member; The signal output connector is electrically connected with the signal input terminal of the battery pack, and outputs an electric signal to control the output voltage switching module of the battery pack to switch from a off state to a on state.

10. The electronic device with a battery pack of claim 9, wherein, The signal output connector is a signal output tab, which is inserted into the signal input terminal.

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