Battery pack and power supply system for electric device

Abstract

The application relates to the technical field of battery packs, and discloses a battery pack and a power supply system of an electric equipment, the battery pack comprising: a first battery and a second battery; the first battery comprising a first positive electrode terminal and a first negative electrode terminal; the second battery comprising a second positive electrode terminal and a second negative electrode terminal; the first positive electrode terminal and the second negative electrode terminal being configured to be electrically connected with positive electrode input terminals and negative electrode input terminals of the electric equipment to output voltage; in a first output state of the battery pack, the first positive electrode terminal and the second negative electrode terminal are adapted to output a first voltage between positive electrode outputs and negative electrode outputs; and in a second output state of the battery pack, the second positive electrode terminal and the first negative electrode terminal are adapted to output a second voltage between the positive electrode outputs and the negative electrode outputs. The battery pack has the advantages that different voltages can be outputted to adapt to different power supply and electric equipment, the internal circuit switching is simple, the output interfaces are unified, the electric equipment with different voltage requirements can adopt the same positive electrode input terminals and negative electrode input terminals, and the battery pack is not needed to be changed and has good universality.

Description

Technical Field

[0001] This invention relates to the field of battery pack technology, and more particularly to a battery pack and a power supply system for electrical equipment. Background Technology

[0002] Traditional battery packs have a fixed output voltage, but nowadays, multiple battery components have been set up and connected in series or in parallel to output voltage, thus enabling the battery pack to output multiple voltages to meet the needs of power tools or electric machines that require different voltages.

[0003] Existing multi-voltage battery packs require complex switching mechanisms or switches to switch between series and parallel output of battery components; and for different output voltages of the battery pack, different plug-in modules are sometimes required for the electrical equipment to match them. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by the present invention is to propose a battery pack and power supply system for electrical equipment with simple circuit switching, unified output interface and no need to modify the power plug module of the electrical equipment.

[0005] The technical solution adopted by this invention to solve its technical problem is to propose a battery pack having at least a first output state and a second output state, including:

[0006] A first battery and a second battery; the first battery includes a first positive terminal and a first negative terminal that are electrically connected to the positive and negative terminals of the first battery, respectively; the second battery includes a second positive terminal and a second negative terminal that are electrically connected to the positive and negative terminals of the second battery, respectively; in the first output state and the second output state of the battery pack, both the first positive terminal and the second negative terminal are configured to be electrically connected to the positive input terminal and the negative input terminal of the electrical device to output voltage;

[0007] In the first output state of the battery pack, the first positive terminal and the second positive terminal are connected, and the first positive terminal and the second positive terminal are jointly configured as the positive output of the battery pack; the second negative terminal and the first negative terminal are connected, and the second negative terminal and the first negative terminal are jointly configured as the negative output of the battery pack; a first voltage is suitable for outputting between the positive output and the negative output.

[0008] In the second output state of the battery pack, the first positive terminal is configured as the positive output of the battery pack, and the second negative terminal is configured as the negative output of the battery pack. The second positive terminal and the first negative terminal are electrically connected to connect the negative and positive terminals of the first battery and the second battery in series. The positive output and the negative output are adapted to output a second voltage.

[0009] Furthermore, in the first output state, the positive input terminal is sequentially inserted into the first positive terminal and the second positive terminal, so that the first positive terminal and the second positive terminal are connected; the negative input terminal is sequentially inserted into the second negative terminal and the first negative terminal, so that the second negative terminal and the first negative terminal are connected.

[0010] In the second output state, the second positive terminal and the first negative terminal are not in contact with the positive input terminal and the negative input terminal.

[0011] Furthermore, in the second output state, the second positive terminal and the first negative terminal can be displaced relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal do not contact the positive input terminal and the negative input terminal.

[0012] Furthermore, it also includes a first conductive connector, which, in the second output state, when the second positive terminal and the first negative terminal are displaced to a preset position, makes the second positive terminal and the first negative terminal electrically connected.

[0013] Furthermore, it also includes a third positive terminal and a third negative terminal, wherein the third positive terminal is electrically connected to the second positive terminal and the third negative terminal is electrically connected to the first negative terminal;

[0014] The second positive terminal, the first negative terminal, and the first conductive connector are displaceable between the first positive terminal and the second negative terminal, and between the third positive terminal and the third negative terminal.

[0015] Furthermore, in the second output state, the first conductive connector moves along with the second positive terminal and the first negative terminal. When it moves to a preset position, the first conductive connector makes the third positive terminal and the third negative terminal electrically connected, thereby making the second positive terminal and the first negative terminal electrically connected.

[0016] Furthermore, the first positive terminal and the second negative terminal are fixedly configured, while the second positive terminal, the first negative terminal, and the first conductive connector are movably configured.

[0017] Furthermore, the battery pack includes a first fixed base and a first slide block that slidably engages with the first fixed base;

[0018] The first fixing base is adapted to fix the first positive terminal and the second negative terminal, as well as the third positive terminal and the third negative terminal;

[0019] The first slide is adapted to fix the second positive terminal and the first negative terminal, as well as the first conductive connector, together.

[0020] Furthermore, in the first output state, the first slide and the first fixed seat are in a limiting engagement and remain relatively stationary; in the second output state, the first slide and the first fixed seat are in a limiting separation, and the first slide is adapted to be driven to displace along the first fixed seat toward the third positive terminal and the third negative terminal.

[0021] Furthermore, the first slide is latched to the first fixed seat, one of which is provided with a latch and the other is provided with a corresponding latch groove. In the first output state, the latch is latched to the corresponding latch groove, and in the second output state, the latch is disengaged from the latch groove.

[0022] Furthermore, a first stroke section, a second stroke section, and a third stroke section are arranged sequentially along the mating direction between the electrical equipment and the battery pack;

[0023] The first positive terminal and the second negative terminal are located in the first travel section;

[0024] The second positive terminal, the first negative terminal, and the first conductive connector are located in the second stroke portion, which is adapted to move.

[0025] The third positive terminal and the third negative terminal are located in the third stroke section.

[0026] Furthermore, in the first output state, the first travel section and the second travel section remain relatively stationary, and the positive input terminal and the negative input terminal of the electrical device are respectively inserted into the first travel section and the second travel section, so that the first positive terminal and the second positive terminal are connected by the positive input terminal, and the first negative terminal and the second negative terminal are connected by the negative input terminal;

[0027] In the second output state, the first travel section remains stationary, and the positive and negative input terminals of the electrical device are respectively inserted into the first travel section. At the same time, the second travel section moves toward the third travel section so that the second positive terminal and the first negative terminal in the second travel section are away from the electrical device. The third positive terminal and the third negative terminal are electrically connected by the first conductive connector to connect the negative and positive terminals of the first battery and the second battery in series. The first positive terminal is connected to the positive input terminal, and the second negative terminal is connected to the negative input terminal.

[0028] Furthermore, in the first output state, the first stroke section and the second stroke section are in a limiting engagement, and the two remain relatively stationary;

[0029] In the second output state, the first stroke section and the second stroke section are adapted to be limited to separate under external action, and the second stroke section is driven by the external force to move toward the third stroke section.

[0030] Furthermore, the second positive terminal, the first negative terminal, and the first conductive connector are adapted to be linked in the second travel portion.

[0031] Furthermore, it also includes a second conductive connector, wherein the second positive terminal and the first negative terminal are displaceable between the first positive terminal, the second negative terminal, and the second conductive connector.

[0032] Furthermore, the first positive terminal, the second negative terminal, and the second conductive connector are fixedly configured, while the first negative terminal and the second positive terminal are movably configured.

[0033] Furthermore, in the first output state, the second positive terminal and the first negative terminal remain stationary relative to the first positive terminal and the second negative terminal;

[0034] In the second output state, the second positive terminal and the first negative terminal are driven by the outside to move toward the second conductive connector, thereby making the second positive terminal and the first negative terminal electrically connected.

[0035] Furthermore, the battery pack includes a second fixing seat and a second slide seat that slidably engages with the second fixing seat;

[0036] The first positive terminal, the second negative terminal, and the second conductive connector are fixedly connected to the second fixed base, and the second positive terminal and the first negative terminal are fixedly connected to the second slide.

[0037] Furthermore, in the first output state, the second slide and the second fixed seat are in a limiting engagement, and the two remain relatively stationary;

[0038] In the second output state, the second slide is separated from the second fixed seat and the second slide is adapted to be driven to slide along the second fixed seat toward the second conductive connector.

[0039] Furthermore, the second slide is latched to the second fixed seat, and one of them is provided with a latch, while the other is provided with a corresponding latch groove. In the first output state, the latch is latched to the corresponding latch groove, and in the second output state, the latch is disengaged from the latch groove.

[0040] Furthermore, the first positive terminal and the second negative terminal are respectively provided with a first plug-in portion and a second plug-in portion from bottom to top along their own height direction;

[0041] In the first output state, the positive input terminal and the negative input terminal of the electrical device are inserted into the first plug-in portion of the first positive terminal and the second negative terminal, respectively. The positive input terminal is connected to the first positive terminal and the second positive terminal in sequence, and the negative input terminal is connected to the second negative terminal and the first negative terminal in sequence.

[0042] In the second output state, the positive input terminal and the negative input terminal of the electrical device are inserted along the second plug-in portion of the first positive terminal and the second negative terminal, respectively. The positive input terminal is connected to the first positive terminal and does not contact the second positive terminal; the negative input terminal is connected to the second negative terminal and does not contact the first negative terminal.

[0043] Furthermore, it also includes a third conductive connector, wherein the first positive terminal, the second positive terminal, the second negative terminal and the first negative terminal are all fixedly configured, and the third conductive connector is movably configured;

[0044] In the second output state, the positive input terminal and / or negative input terminal of the electrical device drive the third conductive connector to electrically connect the second positive terminal and the first negative terminal.

[0045] Furthermore, the third conductive connector is rotatably disposed in the battery pack and is positioned above the second positive terminal and the first negative terminal;

[0046] In the second output state, the positive input terminal and / or negative input terminal of the electrical device are adapted to drive the third conductive connector to rotate, so as to electrically connect the second positive terminal and the first negative terminal.

[0047] Furthermore, the battery pack includes a mounting base, and the first positive terminal, the second positive terminal, the second negative terminal, and the first negative terminal are all fixedly connected to the mounting base; the third conductive connector is hinged to the mounting base via a pivot.

[0048] Furthermore, the battery pack is equipped with a switch that, in the second output state, electrically connects the second positive terminal and the first negative terminal.

[0049] Furthermore, in the second output state, the switch causes the second positive terminal and the first negative terminal to be out of contact with each other.

[0050] Furthermore, along the mating direction of the electrical equipment and the battery pack, the first positive terminal and the second positive terminal are on the same horizontal line, and the second negative terminal and the first negative terminal are on the same horizontal line.

[0051] The technical solution adopted by the present invention to solve its technical problem is to also propose a battery pack, which has at least a first output state and a second output state, including:

[0052] A first battery, a second battery, and a second conductive connector; the first battery includes a first positive terminal and a first negative terminal electrically connected to the positive and negative terminals of the first battery, respectively; the second battery includes a second positive terminal and a second negative terminal electrically connected to the positive and negative terminals of the second battery, respectively; in the first output state and the second output state of the battery pack, both the first positive terminal and the second negative terminal are configured to be electrically connected to the positive input terminal and the negative input terminal of the electrical device to output voltage; wherein, the second positive terminal and the first negative terminal are movably disposed between the first positive terminal, the second negative terminal, and the second conductive connector;

[0053] In the first output state of the battery pack, the first positive terminal and the second positive terminal are electrically connected, and the first positive terminal and the second positive terminal are jointly configured as the positive output of the battery pack; the second negative terminal and the first negative terminal are electrically connected, and the second negative terminal and the first negative terminal are jointly configured as the negative output of the battery pack; a first voltage is suitable for outputting between the positive output and the negative output.

[0054] In the second output state of the battery pack, the first positive terminal is configured as the positive output of the battery pack, and the second negative terminal is configured as the negative output of the battery pack. Under the drive of an external force, the second positive terminal and the first negative terminal are displaced toward the second conductive connector so that the second conductive connector conductively connects the second positive terminal and the first negative terminal. A second voltage is suitable for outputting between the positive output and the negative output.

[0055] The technical solution adopted by this invention to solve its technical problem is to also propose a power supply system for electrical equipment, comprising:

[0056] A first electrical device configured to be driven at a first voltage, including a first connection portion;

[0057] A second electrical device, configured to be driven under a second voltage, includes a second connection portion; and

[0058] A battery pack, comprising a first battery and a second battery; the first battery comprising a first positive terminal and a first negative terminal electrically connected to the positive and negative terminals of the first battery, respectively; the second battery comprising a second positive terminal and a second negative terminal electrically connected to the positive and negative terminals of the second battery, respectively; when a first electrical device or a second electrical device is connected to the battery pack, the first connection part or the second connection part is connected to the first positive terminal and the second negative terminal;

[0059] When connected to a first electrical device, the first positive terminal and the second positive terminal are connected, and the first positive terminal and the second positive terminal are configured together as the positive output of the battery pack; the second negative terminal and the first negative terminal are connected, and the second negative terminal and the first negative terminal are configured together as the negative output of the battery pack, and a first voltage is suitable for output between the positive output and the negative output;

[0060] When connected to a second electrical device, the first positive terminal is configured as the positive output of the battery pack, and the second negative terminal is configured as the negative output of the battery pack. The second positive terminal and the first negative terminal are electrically connected to connect the first battery and the negative and positive terminals of the second battery in series. A second voltage is suitable for outputting between the positive output and the negative output.

[0061] Furthermore, the second connection portion has a positive input terminal and a negative input terminal configured in the same way as the first connection portion.

[0062] Furthermore, the second connection portion also includes a driving member disposed between the positive input terminal and the negative input terminal. The driving member is used to drive the second positive terminal and the first negative terminal to displace relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal do not contact the positive input terminal and the negative input terminal.

[0063] Furthermore, the battery pack also includes a first conductive connector, and the driving member is further configured to drive the second positive terminal and the first negative terminal to displace relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal are electrically connected to the first conductive connector.

[0064] Furthermore, the battery pack also includes a second conductive connector, and the driving member is further configured to drive the second positive terminal and the first negative terminal to displace relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal are electrically connected to the second conductive connector.

[0065] Furthermore, the battery pack also includes a third conductive connector, and the second connecting portion can drive the third conductive connector to move so that the third conductive connector is electrically connected to the second positive terminal and the first negative terminal.

[0066] Furthermore, the first positive terminal and the second negative terminal are configured near the open port of the battery pack.

[0067] Compared with the prior art, the present invention has at least the following beneficial effects:

[0068] In this invention, a first battery and a second battery are provided in the battery pack. The first battery is provided with a first positive terminal and a first negative terminal, and the second battery is provided with a second positive terminal and a second negative terminal. When a device with a low voltage requirement is inserted, the first and second positive terminals are electrically connected, and the second and first negative terminals are electrically connected, so the first and second batteries in the battery pack are connected in parallel to output a first voltage. When a device with a high voltage requirement is inserted, the second positive terminal is not in contact with the first positive terminal, and the first and second negative terminals are not in contact, and the second positive terminal and the first negative terminal are electrically connected, so the first and second batteries in the battery pack are connected in series to output a second voltage (the second voltage is greater than the first voltage). That is, the battery pack can realize dual voltage output of one large and one small voltage. During the switching process of the battery pack's dual voltage output, the internal output circuit of the battery pack can be switched simply by plugging in the power module of the electrical device. No manual adjustment of the battery pack's speed switch or other operations is required, effectively preventing situations where forgetting to adjust the speed switch leads to the battery pack outputting a high voltage to the electrical device, potentially damaging it. Furthermore, both high and low voltage outputs can be achieved through the same connector. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of the circuit principle of Embodiment 1 of the present invention;

[0070] Figure 2 This is a schematic diagram showing the distribution of each positive and negative extreme point in Example 1;

[0071] Figure 3 This is a schematic diagram of the circuit principle of the battery pack in the first output state in Embodiment 1;

[0072] Figure 4 This is a schematic diagram of the circuit principle of the battery pack in the second output state in Example 1;

[0073] Figure 5 This is a schematic diagram of the initial state of the battery pack and the first connecting part in Embodiment 1;

[0074] Figure 6 This is a schematic diagram of the battery pack and the first connecting part mating in Embodiment 1;

[0075] Figure 7 This is a cross-sectional view of the battery pack and the first connecting part in the mating state in Embodiment 1;

[0076] Figure 8 This is another cross-sectional view of the battery pack and the first connecting part in the mating state in Embodiment 1;

[0077] Figure 9 This is a schematic diagram of the battery pack and the second connecting part mating in Embodiment 1;

[0078] Figure 10 This is a schematic diagram of the battery pack and the second connecting part mating in Embodiment 1;

[0079] Figure 11 This is a cross-sectional view of the battery pack and the second connecting part in the mating state in Embodiment 1;

[0080] Figure 12 This is another cross-sectional view of the battery pack and the second connecting part in the mating state in Embodiment 1;

[0081] Figure 13 This is a schematic diagram of the circuit principle in Example 2;

[0082] Figure 14 This is a schematic diagram showing the distribution of each positive and negative end in Example 2;

[0083] Figure 15 for Figure 14 A three-dimensional image;

[0084] Figure 16 for Figure 15 A half-section diagram;

[0085] Figure 17 This is a schematic diagram of the distribution of the connecting conductor and each positive and negative terminal in Example 3;

[0086] Figure 18 for Figure 17 A three-dimensional image;

[0087] Figure 19 for Figure 18 A schematic diagram of the disassembled structure of the third conductive connector in the middle section;

[0088] Figure 20 This is a schematic diagram of the first and second connecting parts before the battery pack is inserted in Embodiment 3.

[0089] In the picture:

[0090] 100. Battery pack; 10. Mounting base; 11. First conductive connector; 12. First fixing base; 13. First slide; 14. Latch; 15. Latch groove; 16. Third conductive connector; 16A. Rotating shaft; 17. Second conductive connector; 18. Second fixing base; 19. Second slide; 10a. First stroke section; 10b. Second stroke section; 10c. Third stroke section;

[0091] 200, First connecting part; 20, Positive input terminal; 21, Negative input terminal;

[0092] 300. Second connecting part; 30. Driving component;

[0093] B1, first battery; B2, second battery; B1+, first positive terminal; B1-, first negative terminal; B2+, second positive terminal; B2-, second negative terminal; B3+, third positive terminal; B3-, third negative terminal. Detailed Implementation

[0094] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0095] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0096] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0097] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0098] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0099] Example 1:

[0100] like Figure 1As shown, a battery pack 100 has at least a first output state and a second output state. In the first output state and the second output state, the battery pack 100 outputs two different voltages, which can be used by different electrical devices. In the first output state, the first battery B1 and the second battery B2 are connected in parallel for output; in the second state, the first battery B1 and the second battery B2 are connected in series for output, and the voltage of the series output is greater than the voltage of the parallel output.

[0101] The battery pack 100 includes a first battery B1 and a second battery B2, each of which may contain multiple battery cells. The first battery B1 includes a first positive terminal B1+ and a first negative terminal B1-, which are electrically connected to the positive and negative terminals of the first battery B1, respectively. The second battery B2 includes a second positive terminal B2+ and a second negative terminal B2-, which are electrically connected to the positive and negative terminals of the second battery B2, respectively. Along the connection direction between the electrical device and the battery pack 100, the first positive terminal B1+ and the second positive terminal B2+ are on the same horizontal line so that the positive input terminal 20 can be directly inserted into and connected to the first positive terminal B1+ and the second positive terminal B2+. The second negative terminal B2- and the first negative terminal B1- are on the same horizontal line so that the negative input terminal 21 can be directly inserted into and connected to the second negative terminal B2- and the first negative terminal B1-. In both the first and second output states of the battery pack 100, the first positive terminal B1+ and the second negative terminal B2- are configured to be electrically connected to the positive input terminal 20 and the negative input terminal 21 of the electrical device to output voltage. Therefore, regardless of whether the electrical device requires a high voltage or a low voltage, it is connected to the first positive terminal B1+ through the positive input terminal 20 and to the second negative terminal B2- through the negative input terminal 21. The battery pack 100 can output both voltages through only the first positive terminal B1+ and the second negative terminal B2-, resulting in a unified interface.

[0102] In practical use, since the high-voltage and low-voltage outputs of the battery pack 100 are different, both are output through the first positive terminal B1+ and the second negative terminal B2-. Therefore, only one pair of positive and negative terminals needs to be set on the battery pack 100 to achieve different voltage outputs. The shape, length, and spacing of the positive input terminals 20 and negative input terminals 21 of both high-voltage and low-voltage electrical devices can be set to be the same. That is, both can be set with the same configuration of positive input terminals 20 and negative input terminals 21. No additional modifications are needed to the positive and negative input terminals 21 of the electrical devices. This makes it highly versatile and has low operating costs.

[0103] In this embodiment, the battery pack 100 further includes a third positive terminal B3+, a third negative terminal B3-, and a first conductive connector 11. The third positive terminal B3+ is electrically connected to the second positive terminal B2+, and the third negative terminal B3- is electrically connected to the first negative terminal B1-. The first conductive connector 11 is mainly used to control the connection or disconnection between the third positive terminal B3+ and the third negative terminal B3-.

[0104] like Figure 3 As shown, in the first output state of the battery pack 100, the first positive terminal B1+ and the second positive terminal B2+ are connected, and the first positive terminal B1+ and the second positive terminal B2+ are configured together as the positive output of the battery pack 100; the second negative terminal B2- and the first negative terminal B1- are connected, and the second negative terminal B2- and the first negative terminal B1- are configured together as the negative output of the battery pack 100, and a first voltage is suitable for outputting between the positive output and the negative output. In this state, the conductive connector 11 is not inserted into the third positive terminal B3+ and the third negative terminal B3-, and the third positive terminal B3+ and the third negative terminal B3- are in a non-conductive state.

[0105] The first connecting part 200 is part of the plug structure of the first electrical device. In the first output state of the battery pack 100, the positive input terminal 20 of the first connecting part 200 is inserted from the outside to the inside, connecting the first positive terminal B1+ and the second positive terminal B2+, thus connecting the first positive terminal B1+ and the second positive terminal B2+. The negative input terminal 21 is inserted from the outside to the inside, connecting the second negative terminal B2- and the first negative terminal B1-, thus connecting the second negative terminal B2- and the first negative terminal B1-. In this state, it is equivalent to the positive terminals of the first battery B1 and the second battery B2 being connected, and the negative terminals of the first battery B1 and the second battery B2 being connected, that is, the first battery B1 and the second battery B2 are connected in parallel to output voltage. For example, when the voltage of the first battery B1 is 12V and the voltage of the second battery B2 is 12V, then the voltage output by the battery pack 100 is also 12V.

[0106] like Figure 4As shown, in the second output state of the battery pack 100, the first positive terminal B1+ is configured as the positive output of the battery pack 100, and the second negative terminal B2- is configured as the negative output of the battery pack 100. The second positive terminal B2+ and the first negative terminal B1- are electrically connected to connect the negative and positive terminals of the first battery B1 and the second battery B2 in series, thus providing a second voltage output between the positive and negative outputs. In this state, the second positive terminal B2+ and the positive input terminal 20 are not in contact, and the first negative terminal B1- and the negative input terminal 21 are not in contact. However, the first conductive connector 11 connects and conducts the third positive terminal B3+ and the third negative terminal B3-, which is equivalent to the second positive terminal B2+ and the first negative terminal B1- being electrically connected, allowing the first battery B1 and the second battery B2 to output voltage in series. For example, when the voltage of the first battery B1 is 12V and the voltage of the second battery B2 is 12V, the output voltage of the battery pack 100 is 24V.

[0107] Combination Figure 3 and Figure 4 As shown, in the second output state, the second positive terminal B2+ and the first negative terminal B1- can be displaced relative to the first positive terminal B1+ and the second negative terminal B2-, so that the second positive terminal B2+ does not contact the positive input terminal 20, and the first negative terminal B1- does not contact the negative input terminal 21. Specifically, in this embodiment, the first positive terminal B1+ and the second negative terminal B2- are fixedly configured, and the second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11 are movably configured. The second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11 can be displaced between the first positive terminal B1+ and the second negative terminal B2-, and between the third positive terminal B3+ and the third negative terminal B3-. More specifically, the three can be linked together, and displacement occurs within the battery pack 100. All three can be driven simultaneously by a single driving member 30.

[0108] Combination Figures 2-4 As shown, a first travel section 10a, a second travel section 10b, and a third travel section 10c are arranged sequentially along the mating direction between the electrical device and the battery pack 100. The first positive terminal B1+ and the second negative terminal B2- are located in the first travel section 10a and are fixedly disposed. The second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11 are located in the second travel section 10b, which is adapted for movable displacement. The sliding of the second travel section 10b causes the second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11 to move together. The third positive terminal B3+ and the third negative terminal B3- are located in the third travel section 10c and are fixedly disposed. It should be explained that:

[0109] In the first output state, the first travel section 10a and the second travel section 10b are in a limiting engagement, remaining relatively stationary. The positive input terminal 20 and the negative input terminal 21 of the electrical device are respectively inserted into the first travel section 10a and the second travel section 10b, so that the first positive terminal B1+ and the second positive terminal B2+ are connected to the positive input terminal 20, and the first negative terminal B1- and the second negative terminal B2- are connected to the negative input terminal 21, resulting in the first battery B1 and the second battery B2 being output in parallel. During this process, the second travel section 10b will not displace relative to the first travel section 10a.

[0110] In the second output state, the first stroke section 10a and the second stroke section 10b are adapted to be limited and separated under external force. The first stroke section 10a remains stationary, while the second stroke section 10b is driven by an external force to move toward the third stroke section 10c. This external force is the force provided when the electrical device is inserted. The positive input terminal 20 and the negative input terminal 21 of the electrical device are respectively inserted into the first stroke section 10a. Simultaneously, the second stroke section 10b moves toward the third stroke section 10c, causing the second positive terminal B2+ and the first negative terminal B1- within the second stroke section 10b to move away from the electrical device. The third positive terminal B3+ and the third negative terminal B3- are electrically connected by the first conductive connector 11, connecting the negative and positive terminals of the first battery B1 and the second battery B2 in series. The first positive terminal B1+ is connected to the positive input terminal 20, and the second negative terminal B2- is connected to the negative input terminal 21. The first battery B1 and the second battery B2 are output in series.

[0111] like Figures 7-8 and Figures 11-12 As shown, the specific mechanical structure for achieving the displacement of the second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11 is as follows: The battery pack 100 includes a first fixed base 12 and a first slide block 13 that slides in cooperation with the first fixed base 12. The first fixed base 12 is adapted to fixally connect the first positive terminal B1+ and the second negative terminal B2-, as well as the third positive terminal B3+ and the third negative terminal B3-. The first slide block 13 is adapted to fixally connect the second positive terminal B2+ and the first negative terminal B1-, as well as the first conductive connector 11. The sliding of the first slide block 13 drives the second positive terminal B2+, the first negative terminal B1-, and the conductive connector 11 to move together. In the first output state, the first slide block 13 is in a limiting cooperation with the first fixed base 12, and the two remain relatively stationary; in the second output state, the first slide block 13 is separated from the first fixed base 12, and the first slide block 13 is adapted to be driven to move along the first fixed base 12 toward the third positive terminal B3+ and the third negative terminal B3-.

[0112] To ensure reliable stationarity and sliding of the first slide block 13, a latch 14 is connected between the first slide block 13 and the first fixed seat 12. One of them is equipped with a latch 14, and the other is equipped with a corresponding latch groove 15. In the first output state, the latch 14 and the latch groove 15 are connected, and the first slide block 13 is limited on the first fixed seat 12 and will not slide. In the second output state, the latch 14 is disengaged from the latch groove 15. After disengaging, the first slide block 13 can slide relative to the first fixed seat 12, so that the second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11 provided on the first slide block 13 can slide.

[0113] The principle of the battery pack's over 100 voltage output in this embodiment is as follows: Figures 5-8 As shown, when the battery pack 100 supplies power to electrical equipment with low voltage requirements, a positive input terminal 20 and a negative input terminal 21 are provided on the first connection portion 200 of the electrical equipment with low voltage requirements. The positive input terminal 20 and the negative input terminal 21 are simultaneously inserted into the battery pack 100. The positive input terminal 20 connects and conducts to the first positive terminal B1+ and the second positive terminal B2+, while the negative input terminal 21 connects and conducts to the second negative terminal B2- and the first negative terminal B1-. The first conductive connector is disconnected from the third positive terminal B3+ and the third negative terminal B3-. At this time, the first battery B1 and the second battery B2 are connected in parallel to output a first voltage, that is, the battery pack 100 outputs a low voltage. Figures 9-12 As shown, when the battery pack 100 supplies power to electrical equipment with high voltage requirements, a positive input terminal 20 and a negative input terminal 21 are provided on the second connection part 300 of the electrical equipment with high voltage requirements. The positive input terminal 20 and the negative input terminal 21 on the second connection part 300 can be configured to be the same as those on the first connection part 200. In addition, a driving member 30 is also provided on the second connection part 300. The driving member 30 can be integrally formed on the second connection part 300 or fixedly connected to the second connection part 300. The positive input terminal 20 and the negative input terminal 21 are simultaneously inserted into the battery pack 100. The positive input terminal 20 is connected to the first positive terminal B1+, and the negative input terminal 21 is connected to the second negative terminal B2-. Simultaneously, the driving member 30 drives the second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11 to slide towards the third positive terminal B3+ and the third negative terminal B3-. The second positive terminal B2+ is not in contact with the first positive terminal B1+, and the first negative terminal B1- is not in contact with the second negative terminal B2-. The first conductive connector 11 connects and conducts electricity to the third positive terminal B3+ and the third negative terminal B3-. At this time, the first battery B1 and the second battery B2 are connected in series to output a second voltage, meaning the battery pack 100 outputs a high voltage.

[0114] Therefore, in this embodiment, during the switching process of the dual voltage output of the battery pack 100, the output circuit inside the battery pack 100 can be switched by inserting the power module of the electrical device. This can prevent the battery pack 100 from outputting a large voltage to the electrical device with a low voltage requirement, thus preventing the electrical device from being burned out.

[0115] Example 2:

[0116] like Figures 13-16 As shown, the difference between this embodiment and embodiment one is that: there is no need to set the third positive terminal B3+ and the third negative terminal B3-, and the second conductive connector 17 in this embodiment is fixedly configured, the second conductive connector 17 is configured on the side of the second positive terminal B2+ and the first negative terminal B1- away from the plugging of the electrical equipment, and the corresponding structural modifications.

[0117] In this embodiment, the first positive terminal B1+ and the second negative terminal B2- remain fixed, while the first negative terminal B1- and the second positive terminal B2+ remain movable. The second positive terminal B2+ and the first negative terminal B1- can slide between the first positive terminal B1+, the second negative terminal B2-, and the second conductive connector 17.

[0118] In the first output state, the second positive terminal B2+ and the first negative terminal B1- remain stationary. The positive input terminal 20 and the negative input terminal 21 are inserted. The positive input terminal 20 connects and conducts to the first positive terminal B1+ and the second positive terminal B2+; the negative input terminal 21 connects and conducts to the second negative terminal B2- and the first negative terminal B1-. The first battery B1 and the second battery B2 are connected in parallel for output, resulting in a small voltage output from the battery pack 100.

[0119] In the second output state, the second positive terminal B2+ and the first negative terminal B1- are driven by an external force to move towards the second conductive connector 17, thereby making the second positive terminal B2+ and the first negative terminal B1- electrically connected, while ensuring that the second positive terminal B2+ is not in contact with the first positive terminal B1+, and the first negative terminal B1- is not in contact with the second negative terminal B2-. The first battery B1 and the second battery B2 are connected in series for output, i.e., the battery pack outputs a maximum voltage of 100V.

[0120] The specific mechanical structure for achieving the displacement of the second positive terminal B2+ and the first negative terminal B1- is as follows: The battery pack 100 includes a second fixed base 18 and a second slide block 19 that slides with the second fixed base 18. The second fixed base 18 is adapted to fix the first positive terminal B1+ and the second negative terminal B2-, as well as the second conductive connector 17. The second slide block 19 is adapted to fix the second positive terminal B2+ and the first negative terminal B1-. The second slide block 19 slides, causing the second positive terminal B2+ and the first negative terminal B1- to move together. In the first output state, the second slide block 19 is in a limiting engagement with the second fixed base 18, and the two remain relatively stationary; in the second output state, the second slide block 19 is separated from the second fixed base 18, and the second slide block 19 is adapted to be driven to move along the second fixed base 18 toward the second conductive connector 17.

[0121] To ensure reliable stationarity and sliding of the second slide block 19, a latch 14 is connected between the second slide block 19 and the second fixed seat 18. One of the two, the second slide block 19 and the second fixed seat 18, is provided with the latch 14, and the other has a corresponding latch groove 15. In the first output state, the latch 14 and the latch groove 15 are connected, and the second slide block 19 is limited to the second fixed seat 18 and will not slide. In the second output state, the latch 14 disengages from the latch groove 15. After disengagement, the second slide block 19 can slide relative to the second fixed seat 18, allowing the second positive terminal B2+ and the first negative terminal B1- provided on the second slide block 19 to slide towards the second conductive connector 17.

[0122] The multi-voltage output principle of the battery pack 100 in this embodiment is as follows: When the battery pack 100 supplies power to electrical equipment with low voltage requirements, the positive input terminal 20 and the negative input terminal 21 of the electrical equipment with low voltage requirements are simultaneously inserted into the battery pack 100. The positive input terminal 20 connects and conducts the first positive terminal B1+ and the second positive terminal B2+, and the negative input terminal 21 connects and conducts the second negative terminal B2- and the first negative terminal B1-. The second conductive connector 17 is in the open state. At this time, the first battery B1 and the second battery B2 are connected in parallel to output the first voltage, that is, the battery pack 100 outputs a low voltage. When the battery pack 100 supplies power to electrical equipment with high voltage requirements, a driving member 30 is also required on the second connection portion 300 of the high-voltage-requirement electrical equipment. Its positive input terminal 20 and negative input terminal 21 are simultaneously inserted into the battery pack 100. The positive input terminal 20 is connected to the first positive terminal B1+, and the negative input terminal 21 is connected to the second negative terminal B2-. Simultaneously, the driving member 30 drives both the second positive terminal B2+ and the first negative terminal B1- to slide towards the second conductive connector 17. The second positive terminal B2+ and the first positive terminal B1+ are not in contact, nor are the first negative terminal B1- and the second negative terminal B2-. The second conductive connector 17 connects and conducts power to the second positive terminal B2+ and the first negative terminal B1-. At this time, the first battery B1 and the second battery B2 are connected in series to output a second voltage, meaning the battery pack 100 outputs a high voltage.

[0123] Compared to the six terminals in Embodiment 1, this embodiment only requires four terminals. There is no need to set the third positive terminal B3+ and the third negative terminal B3-, and the second conductive connector 17 is fixed and does not need to move.

[0124] Example 3:

[0125] like Figures 17-20 As shown, in this embodiment, the battery pack 100 has a first output state and a second output state, and includes a first battery B1, a second battery B2, and a third conductive connector 16. In the first output state, the first battery B1 and the second battery B2 are connected in parallel for output; in the second output state, the first battery B1 and the second battery B2 are connected in series for output. The difference between this embodiment and embodiment 2 is that the second positive terminal B2+ and the first negative terminal B1- in this embodiment are fixed, while the third conductive connector 16 is movable.

[0126] The first battery pack 100 includes a first positive terminal B1+ and a first negative terminal B1-, and the second battery pack 100 includes a second positive terminal B2+ and a second negative terminal B2-. The first positive terminal B1+, the second positive terminal B2+, the second negative terminal B2- and the first negative terminal B1- are all fixedly configured, and the third conductive connector 16 is rotatably disposed in the battery pack 100.

[0127] Specifically, the first positive terminal B1+ and the second negative terminal B2- are respectively provided with a first insertion portion C1 and a second insertion portion C2 from bottom to top along their own height direction. The third conductive connector 16 is rotatably disposed in the battery pack 100 and is located above the second positive terminal B2+ and the first negative terminal B1-, and is used to control the conduction or disconnection of the second positive terminal B2+ and the first negative terminal B1-.

[0128] In the first output state, the positive input terminal 20 and the negative input terminal 21 of the electrical device are inserted into the first insertion portion C1 of the first positive terminal B1+ and the second negative terminal B2-, respectively. The positive input terminal 20 is sequentially inserted into the first positive terminal B1+ and the second positive terminal B2+, connecting and connecting the two positive terminals. The negative input terminal 21 is sequentially inserted into the second negative terminal B2- and the first negative terminal B1-, connecting and connecting the two negative terminals. At this time, the first battery B1 and the second battery B2 are connected in parallel, and the battery pack 100 outputs the first voltage.

[0129] In the second output state, the positive input terminal 20 and negative input terminal 21 of the electrical device are inserted along the second insertion portion C2 of the first positive terminal B1+ and the second negative terminal B2-, respectively. Since the second positive terminal B2+ and the first negative terminal B1- are lower in height than the first positive terminal B1+ and the first negative terminal B2-, the positive input terminal 20 and the negative input terminal 21 will not contact the second positive terminal B2+ and the first negative terminal B1-. The positive input terminal 20 is connected to the first positive terminal B1+, but not to the second positive terminal B2+; the negative input terminal 21 is connected to the second negative terminal B2-, but not to the first negative terminal B1-. Furthermore, the positive input terminal 20 and the negative input terminal 21 abut against the third conductive connector 16, causing the third conductive connector 16 to rotate, thereby connecting and conducting the second positive terminal B2+ and the first negative terminal B1-. At this time, the first battery B1 and the second battery B2 are connected in parallel, and the battery pack 100 outputs the second voltage.

[0130] The battery pack 100 has a mounting base 10, on which the first positive terminal B1+, the second positive terminal B2+, the second negative terminal B2-, and the first negative terminal B1- are all fixedly connected. The third conductive connector 16 is hinged to the mounting base 10 via a pivot 16A. In actual use, a torsion spring can be installed on the pivot 16A to provide torque, which will reset the third conductive connector 16 after the second connection 300 is removed from the battery pack 100.

[0131] The multi-voltage output principle of the battery pack 100 in this embodiment is as follows: When the battery pack 100 supplies power to electrical devices with low voltage requirements, the positive input terminal 20 and negative input terminal 21 of the electrical devices with low voltage requirements are simultaneously inserted into the battery pack 100 from the lower end of the output interface, that is, inserted along the first insertion part C1. The positive input terminal 20 connects and conducts the first positive terminal B1+ and the second positive terminal B2+, and the negative input terminal 21 connects and conducts the second negative terminal B2- and the first negative terminal B1-. The third conductive connector 16 is not driven and is in an open state. At this time, the first battery B1 and the second battery B2 are connected in parallel to output the first voltage, that is, the battery pack 100 outputs a low voltage. When the battery pack 100 supplies power to electrical devices with high voltage requirements, the positive input terminal 20 and negative input terminal 21 of the electrical devices with high voltage requirements are simultaneously inserted into the battery pack 100 from the upper end of the output interface, that is, inserted along the second insertion part C2. Its positive input terminal 20 is connected to the first positive terminal B1+ and not to the second positive terminal B2+; the negative input terminal 21 is connected to the second negative terminal B2- and not to the first negative terminal B1-. Simultaneously, the positive input terminal 20 and the negative input terminal 21 push against the third conductive connector 16, connecting and conducting the second positive terminal B2+ and the first negative terminal B1-. At this time, the first battery B1 and the second battery B2 are connected in series to output a second voltage, meaning the battery pack 100 outputs a high voltage. To prevent incorrect insertion of electrical equipment, corresponding anti-misplacement structures can be provided on the first connection portion 200 and / or the second connection portion 300 to ensure that it cannot be inserted into the battery pack 100 when incorrectly inserted.

[0132] In this embodiment, when the first battery B1 and the second battery B2 are switched in series and parallel output inside the battery pack 100, it is no longer necessary to use the corresponding driving component 30 on the second connection part 300. All four terminals are fixedly set, resulting in better plugging resistance.

[0133] Example 4:

[0134] In an improvement to Embodiment 2, the second conductive connector 17 can be eliminated, and a switch (not shown in the figure) can be directly configured on the battery pack. In the second output state, the switch conductively connects the second positive terminal B2+ and the first negative terminal B1-. Furthermore, the switch can simultaneously prevent the second positive terminal B2+ from contacting the first positive terminal B1+, and prevent the first negative terminal B1- from contacting the second positive terminal B2+.

[0135] When a device requiring low voltage is plugged into battery pack 100, without toggling the switch, the positive input terminal of the device is sequentially connected to the first positive terminal B1+ and the second positive terminal B2+, and the negative input terminal is sequentially connected to the second negative terminal B2- and the first negative terminal B1-. The switch is in the off-state, and the first battery B1 and the second battery B2 output in parallel, i.e., battery pack 100 outputs low voltage. When a device requiring high voltage is plugged into battery pack 100, with the switch toggled, the positive input terminal of the device is connected to the first positive terminal B1+, but not to the second positive terminal B2+; the negative input terminal is connected to the second negative terminal B2-, but not to the first negative terminal B1-. The switch also connects the second positive terminal B2+ and the first negative terminal B1-, and the switch is in the on-state. At this time, the first battery B1 and the second battery B2 output in series, i.e., battery pack 100 outputs high voltage.

[0136] Based on Embodiments 1, 2, 3, and 4, the present invention achieves a series-parallel output conversion structure for the first battery B1 and the second battery B2 in the battery pack 100 as follows: Embodiment 1 utilizes a sliding configuration of the second positive terminal B2+, the first negative terminal B1-, and the first conductive connector 11, along with a fixed configuration of the third positive terminal B3+ and the third negative terminal B3-. Embodiment 2 utilizes a sliding second positive terminal B2+ and the first negative terminal B1-, along with a fixed configuration of the second conductive connector 17. Embodiment 3 utilizes a fixed configuration of the second positive terminal B2+ and the first negative terminal B1-, along with a rotatable third conductive connector 16. Embodiment 4 utilizes a sliding second positive terminal B2+ and the first negative terminal B1-, along with a switch. The output circuit switching structure inside the battery pack 100 is simple to implement, requires fewer types of parts, and can use the same type of terminal, facilitating manufacturing.

[0137] Example 5:

[0138] A power supply system for electrical equipment includes: a first electrical device, a second electrical device, and a battery pack 100.

[0139] The first electrical device is configured to be driven at a first voltage, and is an electrical device with low voltage requirements, including a first connection 200.

[0140] The second electrical device is configured to be driven under a second voltage, and is an electrical device with a high voltage requirement, including a second connection 300.

[0141] The battery pack 100 includes a first battery B1 and a second battery B2. The first battery pack 100 includes a first positive terminal B1+ and a first negative terminal B1-, which are electrically connected to the positive and negative terminals of the first battery B1, respectively. The second battery pack 100 includes a second positive terminal B2+ and a second negative terminal B2-, which are electrically connected to the positive and negative terminals of the second battery B2, respectively. When a first or second electrical device is connected to the battery pack 100, the first connection portion 200 or the second connection portion 300 is connected to the first positive terminal B1+ and the second negative terminal B2-. The first positive terminal B1+ and the second negative terminal B2- are positioned near the open port of the battery pack 100 for easy connection of the first and second electrical devices.

[0142] When the battery pack 100 is connected to the first electrical device, the first positive terminal B1+ and the second positive terminal B2+ are connected, and the first positive terminal B1+ and the second positive terminal B2+ are configured together as the positive output of the battery pack 100; the second negative terminal B2- and the first negative terminal B1- are connected, and the second negative terminal B2- and the first negative terminal B1- are configured together as the negative output of the battery pack 100, and the positive output and the negative output are suitable for outputting a first voltage.

[0143] When the battery pack 100 is connected to the second electrical device, the first positive terminal B1+ is configured as the positive output of the battery pack 100, and the second negative terminal B2- is configured as the negative output of the battery pack 100. The second positive terminal B2+ and the first negative terminal B1- are electrically connected to connect the negative and positive terminals of the first battery B1 and the second battery B2 in series. The positive output and the negative output are suitable for outputting a second voltage.

[0144] In both the first and second electrical appliances, the second connection portion 300 has a positive input terminal 20 and a negative input terminal 21 with the same configuration as the first connection portion 200.

[0145] Example 6:

[0146] This embodiment is a further refinement of Embodiment 5, but it is limited to using the battery pack 100 of Embodiment 1.

[0147] Specifically, when the power supply system uses the battery pack 100 of Embodiment 1, the battery pack 100 has a first conductive connector 11 inside, and a driving member 30 needs to be provided on the second connection part 300 of the electrical device. The driving member 30 is located between the positive input terminal 20 and the negative input terminal 21, and can drive the second positive terminal B2+ and the first negative terminal B1- to displace relative to the first positive terminal B1+ and the second negative terminal B2-, so that the second positive terminal B2+ and the first negative terminal B1- do not contact the positive input terminal 20 and the negative input terminal 21. Moreover, the driving member 30 can drive the second positive terminal B2+, the first negative terminal B1- and the first conductive connector 11 to displace relative to the first positive terminal B1+ and the second negative terminal B2-, so that the first conductive connector 11 conductively connects the third positive terminal B3+ and the third negative terminal B3-, that is, the second positive terminal B2+ and the first negative terminal B1- are conductively connected to the conductive connector 11.

[0148] Example 7:

[0149] This embodiment is a further refinement of Embodiment 5, but it is limited to using the battery pack 100 of Embodiment 2.

[0150] Specifically, when the power supply system uses the battery pack 100 of Embodiment 1, the battery pack 100 has a second conductive connector 17 inside, and a driving member 30 needs to be provided on the second connection part 300 of the electrical device. The driving member 30 is located between the positive input terminal 20 and the negative input terminal 21, and can drive the second positive terminal B2+ and the first negative terminal B1- to displace relative to the first positive terminal B1+ and the second negative terminal B2-, so that the second positive terminal B2+ and the first negative terminal B1- do not contact the positive input terminal 20 and the negative input terminal 21. Furthermore, the driving member 30 can drive the second positive terminal B2+ and the first negative terminal B1- to displace relative to the first positive terminal B1+ and the second negative terminal B2-, so that the second conductive connector 17 can electrically connect the second positive terminal B2+ and the first negative terminal B1-.

[0151] Example 8:

[0152] This embodiment is a further refinement of Embodiment 5, but it is limited to using the battery pack 100 of Embodiment 3.

[0153] Specifically, when the power supply system uses the battery pack 100 of Embodiment 3, the battery pack 100 has a third conductive connector 16 inside. The second connection part 300 of the electrical equipment does not need to be equipped with a driving member 30. The second connection part 300 can directly drive the third conductive connector 16 to move so that the third conductive connector 16 is conductively connected to the second positive terminal B2+ and the first negative terminal B1-.

[0154] In summary, the battery pack 100 of the present invention can output different voltages to adapt to different power supply devices, and its internal circuit switching is simple; the output interface is unified, and power supply devices with different voltage requirements can use the same positive input terminal 20 and negative input terminal 21 without modification, and have good versatility.

Claims

1. A battery pack having at least a first output state and a second output state, characterized in that, include: A first battery and a second battery; the first battery includes a first positive terminal and a first negative terminal that are electrically connected to the positive and negative terminals of the first battery, respectively; the second battery includes a second positive terminal and a second negative terminal that are electrically connected to the positive and negative terminals of the second battery, respectively; in the first output state and the second output state of the battery pack, both the first positive terminal and the second negative terminal are configured to be electrically connected to the positive input terminal and the negative input terminal of the electrical device to output voltage; Along the mating direction of the electrical equipment and the battery pack, the first positive terminal and the second positive terminal are on the same horizontal line, and the second negative terminal and the first negative terminal are on the same horizontal line; In the first output state of the battery pack, the first positive terminal and the second positive terminal are connected, and the first positive terminal and the second positive terminal are jointly configured as the positive output of the battery pack; the second negative terminal and the first negative terminal are connected, and the second negative terminal and the first negative terminal are jointly configured as the negative output of the battery pack; a first voltage is suitable for outputting between the positive output and the negative output. In the second output state of the battery pack, the first positive terminal is configured as the positive output of the battery pack, and the second negative terminal is configured as the negative output of the battery pack. The second positive terminal and the first negative terminal are electrically connected to connect the negative and positive terminals of the first battery and the second battery in series. The positive output and the negative output are adapted to output a second voltage, which is greater than the first voltage. The battery pack achieves both high and low voltage outputs through the same connector. In the first output state, the positive input terminal is sequentially inserted into the first positive terminal and the second positive terminal, so that the first positive terminal and the second positive terminal are connected; the negative input terminal is sequentially inserted into the second negative terminal and the first negative terminal, so that the second negative terminal and the first negative terminal are connected. In the second output state, the second positive terminal and the first negative terminal are not in contact with the positive input terminal and the negative input terminal.

2. The battery pack according to claim 1, characterized in that, In the second output state, the second positive terminal and the first negative terminal can be displaced relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal do not contact the positive input terminal and the negative input terminal.

3. The battery pack according to claim 1, characterized in that, It also includes a first conductive connector, which, in the second output state, when the second positive terminal and the first negative terminal are displaced to a preset position, makes the second positive terminal and the first negative terminal electrically connected.

4. The battery pack according to claim 3, characterized in that, It also includes a third positive terminal and a third negative terminal, wherein the third positive terminal is electrically connected to the second positive terminal and the third negative terminal is electrically connected to the first negative terminal; The second positive terminal, the first negative terminal, and the first conductive connector are displaceable between the first positive terminal and the second negative terminal, and between the third positive terminal and the third negative terminal.

5. The battery pack according to claim 4, characterized in that, In the second output state, the first conductive connector moves along with the second positive terminal and the first negative terminal. When it moves to a preset position, the first conductive connector makes the third positive terminal and the third negative terminal electrically connected, thereby making the second positive terminal and the first negative terminal electrically connected.

6. The battery pack according to claim 4 or 5, characterized in that, The first positive terminal and the second negative terminal are fixedly configured, while the second positive terminal, the first negative terminal, and the first conductive connector are movably configured.

7. The battery pack according to claim 4, characterized in that, The battery pack includes a first fixed base and a first slide block that slidably engages with the first fixed base; The first fixing base is adapted to fix the first positive terminal and the second negative terminal, as well as the third positive terminal and the third negative terminal; The first slide is adapted to fix the second positive terminal and the first negative terminal, as well as the first conductive connector, together.

8. The battery pack according to claim 7, characterized in that, In the first output state, the first slide is engaged with the first fixed seat and the two remain relatively stationary; in the second output state, the first slide is separated from the first fixed seat and the first slide is adapted to be driven to move along the first fixed seat toward the third positive terminal and the third negative terminal.

9. The battery pack according to claim 7 or 8, characterized in that, The first slide is latched to the first fixed seat. One of them is provided with a latch, and the other is provided with a corresponding latch groove. In the first output state, the latch is latched to the corresponding latch groove. In the second output state, the latch is disengaged from the latch groove.

10. The battery pack according to claim 4, characterized in that, A first stroke section, a second stroke section, and a third stroke section are arranged sequentially along the mating direction between the electrical equipment and the battery pack; The first positive terminal and the second negative terminal are located in the first travel section; The second positive terminal, the first negative terminal, and the first conductive connector are located in the second stroke portion, which is adapted to move. The third positive terminal and the third negative terminal are located in the third stroke section.

11. The battery pack according to claim 10, characterized in that, In the first output state, the first travel section and the second travel section remain relatively stationary. The positive input terminal and the negative input terminal of the electrical device are respectively inserted into the first travel section and the second travel section, so that the first positive terminal and the second positive terminal are connected by the positive input terminal, and the first negative terminal and the second negative terminal are connected by the negative input terminal. In the second output state, the first travel section remains stationary, and the positive and negative input terminals of the electrical device are respectively inserted into the first travel section. At the same time, the second travel section moves toward the third travel section so that the second positive terminal and the first negative terminal in the second travel section are away from the electrical device. The third positive terminal and the third negative terminal are electrically connected by the first conductive connector to connect the negative and positive terminals of the first battery and the second battery in series. The first positive terminal is connected to the positive input terminal, and the second negative terminal is connected to the negative input terminal.

12. The battery pack according to claim 10 or 11, characterized in that, In the first output state, the first stroke section and the second stroke section are in a limiting engagement, and the two remain relatively stationary; In the second output state, the first stroke section and the second stroke section are adapted to be limited to separate under external action, and the second stroke section is driven by the external force to move toward the third stroke section.

13. The battery pack according to claim 10, characterized in that, The second positive terminal, the first negative terminal, and the first conductive connector are adapted to be linked in the second travel portion.

14. The battery pack according to claim 1 or 2, characterized in that, It also includes a second conductive connector, wherein the second positive terminal and the first negative terminal are displaceable between the first positive terminal, the second negative terminal, and the second conductive connector.

15. The battery pack according to claim 14, characterized in that, The first positive terminal, the second negative terminal, and the second conductive connector are fixedly configured, while the first negative terminal and the second positive terminal are movably configured.

16. The battery pack according to claim 15, characterized in that, In the first output state, the second positive terminal and the first negative terminal remain stationary relative to the first positive terminal and the second negative terminal; In the second output state, the second positive terminal and the first negative terminal are driven by the outside to move toward the second conductive connector, thereby making the second positive terminal and the first negative terminal electrically connected.

17. The battery pack according to claim 14, characterized in that, The battery pack includes a second fixed base and a second sliding base that slidably engages with the second fixed base; The first positive terminal, the second negative terminal, and the second conductive connector are fixedly connected to the second fixed base, and the second positive terminal and the first negative terminal are fixedly connected to the second slide.

18. The battery pack according to claim 17, characterized in that, In the first output state, the second slide and the second fixed seat are in a limiting engagement, and the two remain relatively stationary; In the second output state, the second slide is separated from the second fixed seat and the second slide is adapted to be driven to slide along the second fixed seat toward the second conductive connector.

19. The battery pack according to claim 17 or 18, characterized in that, The second slide is latched to the second fixed seat, and one of them is provided with a latch and the other is provided with a corresponding latch groove. In the first output state, the latch is latched to the corresponding latch groove, and in the second output state, the latch is disengaged from the latch groove.

20. The battery pack according to claim 1, characterized in that, The first positive terminal and the second negative terminal are respectively provided with a first plug-in portion and a second plug-in portion from bottom to top along their own height direction; In the first output state, the positive input terminal and the negative input terminal of the electrical device are inserted into the first plug-in portion of the first positive terminal and the second negative terminal, respectively. The positive input terminal is connected to the first positive terminal and the second positive terminal in sequence, and the negative input terminal is connected to the second negative terminal and the first negative terminal in sequence. In the second output state, the positive input terminal and the negative input terminal of the electrical device are inserted along the second plug-in portion of the first positive terminal and the second negative terminal, respectively. The positive input terminal is connected to the first positive terminal and does not contact the second positive terminal; the negative input terminal is connected to the second negative terminal and does not contact the first negative terminal.

21. The battery pack according to claim 20, characterized in that, It also includes a third conductive connector, wherein the first positive terminal, the second positive terminal, the second negative terminal and the first negative terminal are all fixedly configured, and the third conductive connector is movably configured; In the second output state, the positive input terminal and / or negative input terminal of the electrical device drive the third conductive connector to electrically connect the second positive terminal and the first negative terminal.

22. The battery pack according to claim 21, characterized in that, The third conductive connector is rotatably disposed in the battery pack and is positioned above the second positive terminal and the first negative terminal; In the second output state, the positive input terminal and / or negative input terminal of the electrical device are adapted to drive the third conductive connector to rotate, so as to electrically connect the second positive terminal and the first negative terminal.

23. The battery pack according to claim 21 or 22, characterized in that, The battery pack includes a mounting base, and the first positive terminal, the second positive terminal, the second negative terminal and the first negative terminal are all fixedly connected to the mounting base; the third conductive connector is hinged to the mounting base via a pivot.

24. The battery pack according to claim 1, characterized in that, The battery pack is equipped with a switch that, in the second output state, electrically connects the second positive terminal and the first negative terminal.

25. The battery pack according to claim 24, characterized in that, In the second output state, the switch causes the second positive terminal and the first negative terminal to be out of contact with each other.

26. A power supply system for electrical equipment, characterized in that, include: A first electrical device configured to be driven at a first voltage, including a first connection portion; A second electrical device, configured to be driven under a second voltage, includes a second connection portion; and As described in claim 1, when the first or second electrical device is connected to the battery pack, the first or second connection part is connected to the first positive terminal and the second negative terminal. When connected to a first electrical device, the first positive terminal and the second positive terminal are connected, and the first positive terminal and the second positive terminal are configured together as the positive output of the battery pack; the second negative terminal and the first negative terminal are connected, and the second negative terminal and the first negative terminal are configured together as the negative output of the battery pack, and a first voltage is suitable for output between the positive output and the negative output; When connected to a second electrical device, the first positive terminal is configured as the positive output of the battery pack, and the second negative terminal is configured as the negative output of the battery pack. The second positive terminal and the first negative terminal are electrically connected to connect the first battery and the negative and positive terminals of the second battery in series. A second voltage is suitable for outputting between the positive output and the negative output.

27. The power supply system for electrical equipment according to claim 26, characterized in that, The second connection portion has a positive input terminal and a negative input terminal with the same configuration as the first connection portion.

28. The power supply system for electrical equipment according to claim 27, characterized in that, The second connection portion further includes a driving member disposed between the positive input terminal and the negative input terminal. The driving member is used to drive the second positive terminal and the first negative terminal to displace relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal do not contact the positive input terminal and the negative input terminal.

29. The power supply system for electrical equipment according to claim 28, characterized in that, The battery pack further includes a first conductive connector, and the driving member is further configured to drive the second positive terminal and the first negative terminal to displace relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal are electrically connected to the first conductive connector.

30. The power supply system for electrical equipment according to claim 28, characterized in that, The battery pack also includes a second conductive connector, and the driving member is further configured to drive the second positive terminal and the first negative terminal to displace relative to the first positive terminal and the second negative terminal, so that the second positive terminal and the first negative terminal are electrically connected to the second conductive connector.

31. The power supply system for electrical equipment according to claim 26, characterized in that, The battery pack also includes a third conductive connector, and the second connecting portion can drive the third conductive connector to move so that the third conductive connector is electrically connected to the second positive terminal and the first negative terminal.

32. The power supply system for electrical equipment according to claim 26, characterized in that, The first positive terminal and the second negative terminal are configured near the open port of the battery pack.

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