Starting power supply and power supply equipment

Abstract

The utility model relates to a starting power supply and power supply equipment, the starting power supply comprises a battery unit, and the battery unit comprises a plurality of battery pieces connected in series; the switching unit is connected with the battery unit, the starting power supply is configured to output a target voltage value according to a connection form of the switching unit and the battery unit, and a voltage interval of the target voltage value is related to the connection form. A switching unit is adopted to be connected with a battery unit, the switching unit is responsible for controlling a target voltage value output by a starting power supply, and the switching unit can adjust the voltage value output by the starting power supply according to different connection modes of the switching unit and a plurality of series-connected battery pieces in the battery unit, so that the starting requirements of different power equipment are met.

Description

Technical Field

[0001] This application relates to the technical field of power supplies, and particularly to starting power supplies and power supply devices. Background Art

[0002] With the development of battery technology, the application of emergency starting power supplies in the automotive field has become increasingly popular. Traditional automotive emergency starting power supplies generally use lead-acid batteries. However, with the maturity and popularization of lithium battery technology, modern automotive emergency starting power supplies are gradually transitioning to lithium batteries. Lithium batteries have advantages such as high energy density, light weight, and long cycle life compared to traditional lead-acid batteries, and have been gradually applied to emergency starting power supplies for household passenger cars, commercial vehicles, etc.

[0003] However, the voltage requirements between household passenger cars and commercial vehicles are becoming increasingly obvious. For example, the starting power supply for household passenger cars is generally 12V, and the starting power supply for commercial vehicles such as trucks is generally 24V. Currently, a single-voltage-output emergency starting power supply has difficulty meeting the starting requirements of different vehicles. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a starting power supply and a power supply device that can provide different voltage requirements for the above technical problems.

[0005] In a first aspect, this application provides a starting power supply, which includes:

[0006] A battery unit, the battery unit includes a plurality of battery components connected in series;

[0007] A switching unit, the switching unit is connected to the battery unit. Among them, the starting power supply is configured to output a target voltage value according to the connection form between the switching unit and the battery unit, and the target voltage value is related to the connection form.

[0008] In one embodiment, the switching unit includes a first connection end that is normally closed to a fixed end point of the battery unit, and a second connection end that is connected to a floating end point of the battery unit, where:

[0009] If the fixed end point is the total positive end of the battery unit, then the floating end point is the total negative end or the middle end of the battery unit;

[0010] If the fixed end point is the total negative end of the battery unit, then the floating end point is the total positive end or the middle end of the battery unit.

[0011] In one embodiment, the middle end is the end point at the middle position between the total positive end and the total negative end of the battery unit.

[0012] In one embodiment, the switching unit includes a first switch and a second switch. Both the first switch and the second switch are configured to be connected to the floating end point. The first switch is connected to the middle end of the battery unit, where:

[0013] If the fixed end point is the total positive end of the battery unit, the second switch is connected to the total negative end of the battery unit;

[0014] If the fixed end point is the total negative end of the battery unit, the second switch is connected to the total positive end of the battery unit.

[0015] In one embodiment, the starting power supply further includes a discharge interface, which is configured to connect the switching unit and a load, so that the starting power supply outputs the target voltage value to the load.

[0016] In one embodiment, the starting power supply further includes a BMS unit, which is connected to the switching unit, so that the switching unit switches the connection form to output the target voltage value.

[0017] In one embodiment, the BMS unit is connected to the battery unit, so that the battery unit outputs a working voltage value for powering the BMS unit.

[0018] In one embodiment, the BMS unit is connected to the total positive end and the middle end of the battery unit or the BMS unit is connected to the middle end and the total negative end of the battery unit.

[0019] In one embodiment, the starting power supply further includes a charging interface, which is connected to the battery unit and is used to charge the battery unit.

[0020] In a second aspect, the present application provides a power supply device, which includes the starting power supply provided in the first aspect of the present application.

[0021] The above-mentioned starting power supply and power supply device include a battery unit, and the battery unit includes a plurality of battery components connected in series; a switching unit, and the switching unit is connected to the battery unit. Wherein, the starting power supply is configured to output a target voltage value according to the connection form between the switching unit and the battery unit, and the voltage range of the target voltage value is related to the connection form. The starting power supply of the present application provides sufficient voltage through a plurality of battery components connected in series for starting power equipment such as vehicles. The switching unit is connected to the battery unit, and the switching unit is responsible for controlling the starting power supply to output different target voltage values. According to the different connection forms between the switching unit and a plurality of series-connected battery components in the battery unit, the switching unit can adjust the output voltage value, so as to adapt to the power consumption requirements of different devices. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic structural diagram of a starting power supply in one embodiment;

[0024] Figure 2 Schematic structural diagram of a starting power supply in another embodiment;

[0025] Figure 3 Schematic diagram of the connection form of a battery unit and a switching unit in one embodiment;

[0026] Figure 4 Schematic diagram of the connection form of a battery unit and a switching unit in another embodiment;

[0027] Figure 5 Schematic structural diagram of a switching unit in one embodiment;

[0028] Figure 6 Schematic structural diagram of a switching unit in another embodiment;

[0029] Figure 7 Schematic structural diagram of a starting power supply in another embodiment;

[0030] Figure 8 Schematic structural diagram of a starting power supply in another embodiment;

[0031] In the figure: 100 - battery unit, 101 - total positive terminal, 102 - total negative terminal, 103 - intermediate terminal, 200 - switching unit, 201 - first switch, 202 - second switch, 300 - discharge interface. Detailed Embodiments

[0032] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed embodiments of the present application in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0034] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0036] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0037] Refer to Figure 1 , Figure 1 which shows a schematic structural diagram of a starting power supply in an embodiment of this application. The starting power supply includes a battery unit 100 and a switching unit 200, where:

[0038] The battery unit 100, and the battery unit 100 includes a plurality of battery components connected in series.

[0039] Switching unit 200, which is connected to the battery unit 100. The starting power supply is configured to output a target voltage value according to the connection form between the switching unit 200 and the battery unit 100, and the target voltage value is related to the connection form.

[0040] In this embodiment, the battery unit 100 includes a number of battery components connected in series. The battery components can be lithium batteries or other types of batteries. By connecting these battery components in series, sufficient voltage can be provided to start power equipment such as vehicles. The switching unit 200 is connected to the battery unit 100 and is responsible for controlling the starting power supply to output different target voltage values. According to the different connection forms between the switching unit 200 and the battery unit 100, the switching unit 200 can adjust the voltage value output by the starting power supply to adapt to the starting requirements of different power equipment.

[0041] It can be understood that according to the different connection forms with a number of series-connected battery components in the battery unit 100, the switching unit 200 of the embodiment of the present application can selectively conduct different numbers of series-connected battery components, so as to use different numbers of series-connected battery components to output different supply voltages.

[0042] As Figure 2 shown, in one embodiment, the starting power supply further includes a discharge interface 300, which is used to connect the switching unit 200 and the load, so that the starting power supply outputs a target voltage value to the load; wherein, the discharge interface includes a positive output terminal and a negative output terminal.

[0043] In this embodiment, by switching the switching unit 200 to output different starting voltages to the same discharge interface 300 with different numbers of series-connected battery components, the number of discharge interfaces is reduced, and the manufacturing cost is saved.

[0044] As Figure 3 shown, in one embodiment, the switching unit 200 includes a first connection end that is normally closed-connected to the fixed end point of the battery unit 100, and a second connection end that is connected to the floating end point of the battery unit 100, where:

[0045] If the fixed end point is the total positive end 101 of the battery unit 100, the floating end point is the total negative end 102 or the middle end 103 of the battery unit 100.

[0046] If the fixed end point is the total negative end 102 of the battery unit 100, the floating end point is the total positive end 101 or the middle end 103 of the battery unit 100.

[0047] In the embodiment of the present application, the total positive terminal 101 and the total negative terminal 102 of the battery unit 100 refer to the wiring endpoints of the overall positive output terminal and the overall negative output terminal of the battery unit 100 when a number of battery components in the battery unit 100 are connected in a certain order. The intermediate terminal of the battery unit 100 refers to the series node between two adjacent battery components inside the battery unit 100. It can be understood that the position of the intermediate terminal can be adjusted according to the specific requirements of the output voltage.

[0048] In a specific implementation manner, please refer to Figure 4 , when the fixed terminal of the battery unit 100 is its total positive terminal 101, the floating terminal can be its intermediate terminal 103. The switching unit 200 includes a first connection end a that is normally closed to the total positive terminal 101 of the battery unit 100, and a second connection end b1 that is connected to the intermediate terminal 103 of the battery unit 100; alternatively, the floating terminal can also be its total negative terminal 102, and the switching unit 200 includes a first connection end a that is normally closed to the total positive terminal 101 of the battery unit 100, and a second connection end b2 that is connected to the total negative terminal 102 of the battery unit 100.

[0049] In this embodiment, when the total positive terminal 101 of the battery unit 100 is normally closed to the first connection end of the switching unit 200, the switching unit 200 can switch one of the total negative terminal 102 and the intermediate terminal 103 of the battery unit 100 to output a different target voltage value from the total positive terminal 101; when the total negative terminal 102 of the battery unit 100 is normally closed to the first connection end of the switching unit 200, the switching unit 200 can switch one of the total positive terminal 101 and the intermediate terminal 103 of the battery unit 100 to output a different target voltage value from the total negative terminal 102. By adopting the above structure, by switching the connection of different floating terminals to the switching unit 200, the discharge circuit structure is simplified, and the switching of the starting voltage is realized.

[0050] In a possible implementation manner of the embodiment shown in Figure 3 or Figure 4 , the intermediate terminal 103 of the battery unit 100 is the endpoint at the middle position between the total positive terminal 101 and the total negative terminal 102 of the battery unit 100.

[0051] In this embodiment, the battery unit 100 includes a first battery group and a second battery group connected in series. The sum of the number of battery components in the first battery group and the second battery group is the total number of battery components connected in series in the battery unit 100. The intermediate terminal 103 of the battery unit 100 is arranged at the node between the first battery group and the second battery group. When the total number of battery components connected in series in the battery unit 100 is an even number, the number of battery components in the first battery group and the second battery group is the same. When the total number of battery components connected in series in the battery unit 100 is an odd number, the number of battery components in the first battery group and the second battery group differs by one.

[0052] In a specific implementation, the battery unit 100 includes seven lithium batteries connected in series. The lithium battery with the total positive terminal directly connected is regarded as the first section, and the intermediate terminal 103 is arranged between the third lithium battery and the fourth lithium battery. The total negative terminal 103 of the battery unit 100 is normally closed-connected to the first connection terminal of the switching unit 200. When the second connection terminal of the switching unit 200 is connected to the total positive terminal 101, the total positive terminal 101 and the total negative terminal 102 of the battery unit 100 output a voltage of 22 - 28V to the discharge interface 300; when the second connection terminal of the switching unit 200 is connected to the intermediate terminal 103, the total negative terminal 102 and the intermediate terminal 103 of the battery unit 100 output a voltage of 10 - 15V to the discharge interface 300.

[0053] In this embodiment, the switching unit 200 is used to switch the output of the starting voltage of 12V / 24V. 22V - 28V is applicable to the use of the 24V starting voltage, and 10V - 15V is applicable to the use of the 12V starting voltage.

[0054] Please refer to Figure 5 and Figure 6 simultaneously. The switching unit 200 includes a first switch 201 and a second switch 202. Both the first switch 201 and the second switch 202 are used to connect to the floating end point. The first switch 201 is connected to the intermediate terminal 103 of the battery unit 100, where:

[0055] If the fixed end point is the total positive terminal 101 of the battery unit 100, the second switch 202 is connected to the total negative terminal 102 of the battery unit 100.

[0056] If the fixed end point is the total negative terminal 102 of the battery unit 200, the second switch 202 is connected to the total positive terminal 101 of the battery unit 100.

[0057] In a specific implementation, the first switch 201 and the second switch 202 are manual switches and / or electrically controlled switches. Further, both the first switch 201 and the second switch 202 are electrically controlled switches, and the first switch 201 and the second switch 202 are controlled by a battery management system (i.e., the BMS unit) to switch. The electrically controlled switch is preferably an electromagnetic relay. The electromagnetic relay has strong stability, high reliability, and long service life, and can accurately control the switching of different starting voltages.

[0058] In this embodiment, by disconnecting the first switch 201 and closing the second switch 202, it is possible to output the starting voltage through the total positive terminal 101 and the total negative terminal 102 of the battery unit 100. By closing the first switch 201 and disconnecting the second switch 202, it is possible to output the starting voltage through the intermediate terminal 103 and the total positive terminal 101 or the total negative terminal 102 of the battery unit 100. Further, the discharge interface 300 shares a negative output terminal (total negative terminal). By switching the positive output terminals (total positive terminal and intermediate terminal) at different positions, the structure of the discharge circuit is simplified, and the switching of the 12V / 24V starting voltage is achieved; the discharge interface can also share a positive output terminal (total positive terminal), and the switching of the 12V / 24V starting voltage is achieved by switching the negative output terminals (total negative terminal and intermediate terminal) at different positions.

[0059] In one embodiment, as Figure 7 shown, the starting power supply further includes a display unit. One end of the display unit is connected to the fixed end point of the battery unit 100, and the other end of the display unit is connected to the floating end point of the battery unit 100, and is configured to display the output voltage of the battery unit 100.

[0060] In this embodiment, the display unit can be a voltage display screen. Through the display unit, the output voltage of the battery unit 100 can be displayed in real time, thereby avoiding the situation of incorrect connection.

[0061] In one embodiment, as Figure 8 shown, the starting power supply further includes a charging interface. The charging interface is connected to the battery unit 100 and is used to charge the battery unit 100.

[0062] In this embodiment, by providing a charging interface connected to the battery unit 100, the charging interface can charge the battery unit 100 to ensure that the starting power supply has sufficient power for starting voltage output.

[0063] In one embodiment, please continue to refer to Figure 8 , the switching unit 200 further includes a third switch for connecting the switching unit 200 to the fixed end point of the battery unit 100. The third switch can be connected to the control board to control the closing or opening of the third switch through the control board. The third switch can be used to improve the stability of the connection between the switching unit 200 and the fixed end point of the battery unit 100.

[0064] In one embodiment, please continue to refer to Figure 8, the starting power supply of the embodiment of the present application further includes a BMS unit, which is connected to the switching unit 200 to enable the switching unit 200 to switch the connection form to output a target voltage value. The BMS unit is connected to the battery unit 100 and / or the charging interface to enable the battery unit 100 and / or the charging interface to output a working voltage value for powering the BMS unit.

[0065] In this embodiment, the switching of the connection form of the switching unit 200 includes connecting the total negative terminal of the battery pack to the first connection terminal of the switching unit and connecting the middle terminal of the battery pack to the second connection terminal of the switching device. The total negative terminal of the battery pack is connected to the first connection terminal of the switching unit, and the total positive terminal of the battery pack is connected to the second connection terminal of the switching device.

[0066] In one implementation, the first switch, the second switch, and the third switch are all connected to the BMS unit, and when needed, the first switch, the second switch, and the third switch are controlled according to the BMS unit to achieve switching control of the starting power supply.

[0067] In one implementation, the battery unit 100 includes a first battery pack for outputting a working voltage value and a second battery pack for outputting a target voltage value, where: the first battery pack includes a first number of battery components connected in series, and the second battery pack includes a second number of battery components connected in series.

[0068] Furthermore, the first battery pack and the second battery pack are respectively composed of different battery components. Specifically, the power supply terminal of the BMS unit is used to connect to the total negative terminal 102 and the middle terminal 103 of the battery unit 100. The first battery pack between the total negative terminal 102 and the middle terminal 103 powers the BMS unit, and the second battery pack between the total positive terminal 101 and the middle terminal 103 outputs the starting voltage; or, the power supply terminal of the BMS unit is used to connect to the total positive terminal 101 and the middle terminal 103 of the battery unit 100. The first battery pack between the total positive terminal 101 and the middle terminal 103 powers the BMS unit, and the second battery pack between the total negative terminal 102 and the middle terminal 103 outputs the starting voltage.

[0069] In a specific implementation, please continue to refer to Figure 8 , the BMS unit is powered by three battery components on the left, namely the 7th, 6th, and 5th battery components, and four battery components on the right, namely the 4th, 3rd, 2nd, and 1st battery components, output 12V voltage to the discharge interface 300, which can keep the battery voltage difference in the battery unit 100 from being too large and avoid damaging the battery.

[0070] In this embodiment, a BMS unit is provided to control the first switch, the second switch, or the third switch to achieve the switching of the output voltage of the starting power supply. The BMS unit can obtain its operating voltage from the battery unit 100 or the charging interface, thereby ensuring the normal operation of the BMS unit. When the battery unit 100 is used to provide the operating voltage of the BMS unit, the battery unit 100 includes a first battery pack for outputting an operating voltage value and a second battery pack for outputting a target voltage value, where: the first battery pack includes a first number of battery components connected in series, the second battery pack includes a second number of battery components connected in series, and the first battery pack and the second battery pack are respectively composed of different battery components, which can keep the battery voltage difference in the battery unit 100 from being too large and avoid damaging the battery.

[0071] The embodiment of the present application also provides a power supply device, which includes the starting power supply provided in the above embodiment of the present application.

[0072] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0073] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A starting power supply, characterized in that: include: A battery unit, the battery unit comprising a plurality of battery elements connected in series; a switching unit, the switching unit being connected to the battery unit, wherein the starting power supply is configured to output a target voltage value according to a connection form between the switching unit and the battery unit, the target voltage value being related to the connection form; The switching unit includes a first connection terminal which is normally closed connected to a fixed terminal of the battery unit, and a second connection terminal which is connected to a floating terminal of the battery unit, wherein: If the fixed end point is the total positive end of the battery cell, the floating end point is the total negative end or the middle end of the battery cell; If the fixed end point is the total negative end of the battery cell, the floating end point is the total positive end or the middle end of the battery cell; The switching unit includes a first switch and a second switch, wherein the first switch and the second switch are both used to connect to the floating end point, and the first switch is connected to the middle end of the battery unit; The starting power supply further includes a BMS unit, and the BMS unit is connected to both the first switch and the second switch; The battery unit includes a first battery pack for outputting an operating voltage value, and a second battery pack for outputting a target voltage value; wherein: The power supply end of the BMS unit is used to connect the total negative end and the middle end of the battery unit, and the first battery pack between the total negative end and the middle end supplies power to the BMS unit, and by closing the first switch and opening the second switch, the second battery pack between the total positive end and the middle end outputs a starting voltage; or, The power supply end of the BMS unit is used to connect the total positive end and the middle end of the battery unit. The BMS unit is powered by a first battery pack between the total positive end and the middle end. By closing the first switch and opening the second switch, the second battery pack between the total negative end and the middle end outputs a starting voltage.

2. The starting power supply according to claim 1, characterized in that: The middle end is an end point at a middle position between the total positive end and the total negative end of the battery cell.

3. The starting power supply according to claim 1, characterized in that: If the fixed end point is the total positive end of the battery cell, the second switch is connected to the total negative end of the battery cell; If the fixed end point is the total negative end of the battery unit, the second switch is connected to the total positive end of the battery unit.

4. The starting power supply according to claim 1, characterized in that: The starting power supply further includes a discharge interface, and the discharge interface is used to connect the switching unit and a load so that the starting power supply outputs the target voltage value to the load.

5. The starting power supply according to claim 1, characterized in that: The starting power supply also includes a charging interface, which is connected to the battery unit and is used to charge the battery unit.

6. A power supply device, characterized in that: Comprising a starting power supply as described in any one of claims 1 to 5.

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