CN205901577U - An AC and DC power supply - Google Patents

Abstract

The utility model provides a AC/DC power supply, wherein, this AC/DC power supply includes: set up in the inside chargeable call group of casing to reach the dc -to -ac converter and the battery management system that do not are connected with this chargeable call component, the outside of this casing is provided with the direct current output mouth, exchanges the delivery outlet and charges the input port, wherein, it is connected with the output of above -mentioned dc -to -ac converter to exchange the delivery outlet for output interflow, the direct current output mouth with charge the input port respectively with above -mentioned chargeable call group link, the direct current output mouth is used for exporting the direct current, the input port that charges is used for putting through external power, charges for above -mentioned chargeable call group, above -mentioned battery management system is used for protecting chargeable call group. The utility model discloses support the multiple forms of charging such as interchange or direct current, the safeguard measure to the battery is comparatively perfect moreover, synthesizes the performance that has promoted charging source.

Description

An AC and DC power supply

technical field

The utility model relates to the technical field of power supply, in particular to an AC and DC power supply.

Background technique

Nowadays, batteries have been integrated into people's lives and become a common energy storage method in daily life, bringing convenience to the charging of various electrical equipment.

People usually use traditional battery power sources (such as lead-acid batteries) to charge electrical equipment in situations such as armed police firefighting, medical rescue, environmental monitoring, electric power maintenance, field emergency and other outdoor places and family power failure emergencies, but the inventor realizes the present invention During the utility model process, it was found that the traditional battery power supply has the following problems: (1) Traditional batteries such as lead-acid batteries have small capacity, bulky volume, and are not easy to carry; (2) Traditional batteries are prone to problems such as short circuit, accidents such as burning; (3) When the user needs to charge the AC power equipment, the traditional battery needs to be connected to the inverter externally, and repeated wiring is required for each use, which is cumbersome; (4) The traditional battery is Without protective measures, the service life is low and needs to be replaced frequently. To sum up, the performance of the charging power source of the traditional power source is not good, and it cannot better meet the various needs of the user.

For the above-mentioned problem that the performance of the existing charging power supply is not good enough to satisfy various needs of users, no effective solution has been proposed yet.

Utility model content

In view of this, the purpose of the embodiments of the present invention is to provide an AC and DC power supply, which can bring convenience to the user on the basis of improving the performance of the charging power supply, and better meet the various needs of the user for charging.

In the first aspect, the embodiment of the utility model provides an AC and DC power supply, including: a rechargeable battery set inside the housing, and an inverter and a battery management system respectively connected to the rechargeable battery pack; the housing There are DC output port, AC output port and charging input port on the outside; among them, the AC output port is connected with the output end of the above-mentioned inverter for outputting alternating current; the DC output port and the charging input port are connected with the rechargeable battery pack respectively. connection, the DC output port is used to output DC power, and the charging input port is used to connect to an external power source to charge the rechargeable battery pack; the above-mentioned battery management system is used to protect the rechargeable battery pack, and the protection includes at least one of the following : Short circuit protection, over temperature protection, over voltage protection, over current protection, under voltage protection, over charge protection or over discharge protection.

In combination with the first aspect, the embodiment of the present utility model provides a first possible implementation manner of the first aspect, wherein the above-mentioned battery management system further includes a control board, a battery protection board and a battery charging board respectively connected to the rechargeable battery pack The control board is also connected with the battery protection board and the battery charging board, and is used to control the working status of the battery protection board and the battery charging board; the battery protection board is used to protect the rechargeable battery pack under the control of the control board. The battery charging board is also connected with the charging input port for charging the rechargeable battery pack under the control of the control board.

In combination with the first possible implementation manner of the first aspect, the embodiment of the present utility model provides a second possible implementation manner of the first aspect, wherein the above-mentioned battery management system further includes a temperature sensor, and the temperature sensor is connected to the control board, It is used to send an over-temperature protection signal to the control board when it is detected that the temperature inside the casing is higher than the preset first temperature threshold; after the control board receives the over-temperature protection signal, it triggers the battery protection board to start the over-temperature protection.

In combination with the first possible implementation of the first aspect, the embodiment of the present utility model provides a third possible implementation of the first aspect, wherein the battery management system further includes a voltage converter connected to the control board, and the voltage The converter is used to convert the voltage of the rechargeable battery pack into a preset voltage under the control of the control board; the voltage value of the preset voltage includes one or more of the following: 5V, 12V or 24V. At least one DC output port connected to the voltage converter is also provided outside the housing for outputting a preset voltage.

In combination with the first aspect, the embodiment of the present utility model provides a fourth possible implementation manner of the first aspect, wherein the AC and DC power supply further includes an alarm connected to the above-mentioned battery management system, and the battery management system detects that the rechargeable battery When the group is working abnormally, the siren will be triggered to alarm.

In combination with the first aspect, the embodiment of the present utility model provides a fifth possible implementation manner of the first aspect, wherein a cooling fan is provided inside the casing, and a cooling air outlet is arranged outside the casing, and the cooling air outlet includes a group or a.

In combination with the fifth possible implementation of the first aspect, the embodiment of the present utility model provides a sixth possible implementation of the first aspect, wherein the AC and DC power supply further includes: a temperature control circuit connected to the inverter , the temperature control circuit is connected to the cooling fan; the temperature control circuit is used to start the cooling fan when it detects that the internal temperature of the casing is higher than the preset second temperature threshold.

In combination with the first possible implementation of the first aspect, the embodiment of the present utility model provides a seventh possible implementation of the first aspect, wherein the above-mentioned battery management system further includes a display screen and function keys connected to the control board ; Wherein, when the control board receives the key command of the function key, it performs the control corresponding to the key command.

In combination with the seventh possible implementation manner of the first aspect, the embodiment of the present utility model provides an eighth possible implementation manner of the first aspect, wherein a handle is provided on the casing, and the handle is arranged above the casing, and It is foldable; the AC and DC power supply also includes a lighting lamp connected to the control panel, and the lighting lamp includes an LED lamp.

In combination with any one of the first aspect to the eighth possible implementation manner of the first aspect, the embodiment of the present utility model provides a ninth possible implementation manner of the first aspect, wherein the above-mentioned rechargeable battery pack For the lithium battery pack.

The embodiment of the utility model provides an AC and DC power supply. By connecting an inverter to the rechargeable battery pack, the power supply can be used as an AC power supply; at the same time, by connecting a DC output port to the rechargeable battery pack, the power supply can It can also be used as a DC power supply; in addition, by connecting the battery management system to the rechargeable battery pack, the rechargeable battery pack can be relatively well protected. Compared with the problem of poor performance of the charging power source in the prior art, the above-mentioned AC and DC power sources can support multiple charging forms such as AC or DC, and the protection measures for the battery are relatively complete, which comprehensively improves the performance of the charging power source, thereby providing It brings convenience to the operator and better meets the various needs of users for charging.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 shows a schematic structural diagram of an AC and DC power supply provided by an embodiment of the present invention;

Fig. 2 shows a specific structural schematic diagram of an AC and DC power supply provided by an embodiment of the present invention;

Fig. 3 shows another schematic structural diagram of a battery management system provided by an embodiment of the present invention;

Fig. 4 shows a front view of an AC and DC power supply provided by an embodiment of the present invention;

Fig. 5 shows a rear view of an AC and DC power supply provided by an embodiment of the present invention;

Fig. 6 shows a left view of an AC and DC power supply provided by the embodiment of the present invention;

Fig. 7 shows a right view of an AC and DC power supply provided by the embodiment of the present invention;

Graphical description:

10-Rechargeable battery pack 10a-Lithium battery pack

20-Inverter 30-Battery Management System

40-DC output port 50-AC output port

60-charging input port 31-control board

32-Battery protection board 33-Battery charging board

34-voltage converter 35-temperature sensor

36-display screen 40a-DC output port

40b-DC output port 36a-Display button

80-Emergency lighting 80a-Emergency lighting button

40c-USB DC output port 40d-12V DC output port

40e-24V DC output port 50a-220V AC output port

50b-AC output button 90a-Auxiliary cooling vent

90b-Fan cooling air inlet 100-Handle

110-Non-slip mat

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiment is only a part of the embodiments of the present utility model, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

Considering that the power supply in the prior art is usually a single DC or AC power supply, and the protection measures are not perfect, the embodiment of the utility model provides an AC and DC power supply, which can be realized by using a hardware circuit. Describe it in detail.

Example 1

Referring to the schematic structural diagram of an AC and DC power supply shown in Figure 1, the AC and DC power supply includes the following devices:

The rechargeable battery pack 10 arranged inside the casing (as shown in the dotted line box in Figure 1), and the inverter 20 and the battery management system 30 respectively connected to the rechargeable battery pack 10; the outside of the above-mentioned casing is provided with a DC An output port 40, an AC output port 50, and a charging input port 60; wherein, the AC output port 60 is connected to the output end of the inverter 20 for outputting alternating current;

The DC output port 40 and the charging input port 60 are respectively connected to the rechargeable battery pack 10, the DC output port 40 is used for outputting direct current, and the charging input port 60 is used for connecting an external power source to charge the rechargeable battery pack 10;

The battery management system 30 is used to protect the rechargeable battery pack 10, the protection may include at least one of the following: short circuit protection, over temperature protection, over voltage protection, over current protection, under voltage protection, over charge protection or over discharge protection , according to the needs of actual circuit design, different protection forms can be selected, and then there will be a specific circuit structure of the battery management system corresponding to the protection form.

Wherein, the DC output port 40 may be directly connected to the rechargeable battery pack 10 , or the DC output port 40 may be indirectly connected to the rechargeable battery pack 10 through the battery management system 30 .

The AC output port 50 may be a commonly used AC220V output port. In order to support various interface forms (for example, two-phase interface or three-phase interface) of electrical equipment, the AC220V output port may be realized by a universal socket.

The above-mentioned AC and DC power supply provided by the embodiment of the utility model can be used as an AC power supply by connecting an inverter for the rechargeable battery pack; at the same time, by connecting a DC output port for the rechargeable battery pack, the power supply can It can be used as a DC power supply; in addition, by connecting the battery management system to the rechargeable battery pack, the rechargeable battery pack can be relatively well protected. To sum up, the AC and DC power supply provided by this embodiment can support multiple charging forms such as AC or DC, and the protection measures for the battery are relatively complete, which comprehensively improves the performance of the charging power supply.

The above-mentioned rechargeable battery pack can be a lithium battery pack or a battery pack composed of other rechargeable batteries, and the lithium battery has the advantages of small size, large capacity, long life, light weight, etc., so the rechargeable battery can preferably be a lithium battery, and adopt Welding technology constitutes a lithium battery pack. In the following embodiments, the rechargeable battery pack is described as an example of a lithium battery pack.

In the specific implementation process, the above-mentioned battery management system can be realized by using various circuit structures. Refer to the specific structural diagram of an AC and DC power supply shown in FIG. 2. On the basis of the AC and DC power supply shown in FIG. 1, this embodiment gives An implementation of the battery management system is shown. In the AC and DC power supply, the battery management system 30 includes a control board 31, a battery protection board 32, and a battery charging board 33 respectively connected to the lithium battery pack 10a;

As shown in Figure 2, the control board 31 is also connected with the battery protection board 32 and the battery charging board 33, and the battery charging board 33 is also connected with the charging input port 60; wherein, the control board 31 is used to control the battery protection board 32 and the battery charging board 33 working status; for example: control the battery protection board 32 to start protection measures for the lithium battery pack 10a under certain conditions, in this case, the control board 31 can send a protection trigger signal to the battery protection board 32; or control the battery charging board 33 for charging, such as sending a charging trigger signal to the battery charging board 33;

The battery protection board 32 is used to protect the lithium battery pack 10 a under the control of the control board 31 .

The battery charging board 33 is used for charging the lithium battery pack 10 a under the control of the control board 31 .

The above-mentioned battery management system controls the working status of the battery protection board and the battery charging board through the control board, which can make the battery protection board work only when it is triggered, and effectively extend the battery life under the premise of protecting the safe use of the lithium battery. The service life of the protection board improves the performance of the AC and DC power supply; at the same time, the battery charging board can reasonably charge the lithium battery pack under the control of the control board, avoiding damage to the lithium battery pack caused by improper charging , Increase the number of times the lithium battery pack can be reused.

In addition, in addition to controlling the working status of the above-mentioned battery protection board and battery charging board, the control board can also control other functional units inside the AC and DC power supply according to actual application requirements, so that the AC and DC power supply can be used in each functional unit. work in harmony with each other.

It should be noted that only one connection relationship between the control board 31, the battery protection board 32 and the battery charging board 33 is shown in FIG. Board 33 supplies power.

Referring to another schematic structural diagram of a battery management system shown in FIG. 3 , on the basis of the above-mentioned embodiments, the battery management system 30 may further include a voltage converter 34 connected to the control board 31 , a temperature sensor 35 and a Display screen 36, their specific functions can be referred to as follows:

The voltage converter 34 is used to convert the voltage of the lithium battery pack to a preset voltage under the control of the control board 31 ; the voltage value of the preset voltage includes one or more of the following: 5V, 12V or 24V and so on. Based on this, at least one DC output port can also be provided outside the above-mentioned housing, as shown in Figure 3, the two DC output ports are respectively DC output port 40a and DC output port 40b; DC output port 40a and DC output port 40b It is connected with the voltage converter 34 for outputting the preset voltage mentioned above.

In a specific application, the 5V DC output port can be a USB (Universal Serial Bus, Universal Serial Bus) port, and through this USB port, it can conveniently charge devices such as mobile phones and iPads; of course, according to actual needs, the above-mentioned DC output port It is not limited to two, and there may be more than one. It should be noted that the above preset voltage values are only indicative, and other voltage values can be flexibly set according to actual needs, and implemented by using corresponding voltage converters.

The temperature sensor 35 is used to send an over-temperature protection signal to the control board 31 when it detects that the temperature inside the housing is higher than the preset first temperature threshold; after the control board 31 receives the over-temperature protection signal, it triggers the battery protection board 32 to start Over temperature protection. For example, setting the first temperature threshold is an empirical value, which can be any value from 60°C to 70°C, such as 65°C. When the temperature sensor 35 detects that the temperature is higher than 65°C, the temperature sensor 35 sends a Over-temperature protection signal, so that the control board 31 triggers the battery protection board 32 to start the over-temperature protection mechanism. The heat generated by the operation of functions such as output, thereby alleviating the adverse effects of high temperature on the working state of the lithium battery pack.

The display screen 36 is used to display corresponding content under the control of the control board 31, such as the working status of the lithium battery, battery power, etc. Of course, it can also display other preset information, which will not be repeated here. In a specific application, the display screen 36 may be implemented in any manner of a liquid crystal display, an LED display, an LCD display or a touch display.

To sum up, by setting a voltage converter in the battery management system, the voltage of the lithium battery pack can be converted to other preset voltages, so that it can charge a variety of electrical equipment with different rated voltages, and better meet the requirements To meet the different needs of users; by setting the temperature sensor, the temperature environment inside the shell can be effectively monitored, thereby avoiding the abnormal operation of the lithium battery pack caused by excessive temperature, and the further over-temperature protection adopted can also prevent the lithium battery pack from Damaged by high temperature; in addition, by setting a display screen, the user can have a clear understanding of the working status of the lithium battery, bringing a good user experience to the user.

Furthermore, in order to dissipate or reduce the heat inside the power supply as soon as possible, the AC and DC power supply of this embodiment can also add one or more cooling fans inside the casing, and accordingly, a cooling outlet can be provided on the casing. The cooling air outlets include one or more groups. In a specific application, the heat dissipation air outlet may include a fan heat dissipation air inlet and an auxiliary heat dissipation air outlet. Wherein, the position of the heat dissipation air inlet of the fan may correspond to the heat dissipation fan in the housing, and the auxiliary heat dissipation air outlet may be arranged on the side of the housing, etc. By arranging a plurality of heat dissipation air outlets in different positions, the air circulation inside the AC and DC power supply casing can be effectively ensured, and the heat dissipation effect is better.

The above-mentioned cooling fan can be started manually, or can be automatically started by a certain device. Preferably, taking automatic start as an example, the above-mentioned AC and DC power supply can also include: a temperature control circuit connected to the inverter, the temperature control circuit and the above-mentioned The cooling fan is connected; when the temperature control circuit detects that the internal temperature of the casing is higher than the preset second temperature threshold, the cooling fan is started. For example, setting the second temperature threshold is an empirical value, which can be any value from 40°C to 50°C, such as 45°C. When the temperature control circuit detects that the temperature inside the housing is higher than 45°C, the cooling fan will be activated. Cool down the AC and DC power supply so that the AC and DC power supply can work better. Through the above method, the fan can be turned on automatically in time, so that the heat dissipation of the power supply is more timely and convenient.

Under normal circumstances, because the lithium battery pack is installed inside the above-mentioned power supply, it is difficult to find out its abnormal operation (such as leakage, insufficient power, etc.) intuitively. Based on this, in order to allow users to detect abnormalities in time and take corresponding measures, the The AC and DC power supply can also include an alarm connected to the battery management system. When the battery management system detects that the lithium battery pack is working abnormally, the alarm will be triggered to give an alarm. The siren can send out sound signals alone, or sound signals and light signals at the same time; in specific implementation, it can be an image display alarm or sound alarm, etc.

Considering that users may use the AC and DC power supply in various environments, such as dark environments such as home power outages and field operations, in order to provide better convenience for users, the above AC and DC power supply includes lighting connected to the control panel. Lamps, lighting lamps include LED lamps. Wherein, the position and quantity of lighting lamps can be flexibly set, so as to provide lighting services for users.

In addition, the above-mentioned battery management system further includes a function key connected to the control board; when the control board receives a key command of the function key, it performs control corresponding to the key command. For example, the function keys may include light switches, display screen switches, and AC output switches. By setting the function keys, the user can control the AC and DC power supply provided by this embodiment according to his own needs, so as to realize convenient human-computer interaction.

In order to allow the user to carry the AC and DC power supply conveniently, a handle is provided on the casing of the AC and DC power supply, and the handle is arranged on the top of the casing and is foldable. That is, the handle can be lifted when in use, and folded down when not in use, thereby providing convenience for users.

To sum up, the AC and DC power supply provided by this embodiment can provide users with multiple charging methods such as AC and DC. The performance of the power supply brings convenience to users.

Example 2

Based on the above-mentioned embodiments, this embodiment is described by taking the description of the external outline of the AC and DC power supply as an example, referring to Figures 4 to 7, wherein Figure 4 is a front view of the AC and DC power supply, and Figure 5 is a rear view of the AC and DC power supply , Figure 6 is a left view of the AC and DC power supply, and Figure 7 is a right view of the AC and DC power supply.

Fig. 4 shows the display screen 36, the display screen button 36a, the emergency lighting button 80a, the USB DC output port 40c, the auxiliary cooling air outlet 90a, the handle 100 and the non-slip foot pad 110 included in the AC and DC power supply;

Among them, the user can know the working state of the battery (such as battery power, etc.) through the display screen 36, and can also realize corresponding control through different keys, for example, use the display screen key 36a to control the display state of the display screen 36, such as turning on display screen, turn off the display screen or control the display screen to display different content, etc.; use the emergency lighting button 80a to control the turning on and off of the lighting lamp. Users can also charge electronic products such as mobile phones and iPads through the USB DC output port 40c (the output voltage of the USB port is 5V), which is very flexible and convenient. The existence of the auxiliary heat dissipation air outlet 90a can allow the air inside the power supply casing to circulate and cool down the inside of the casing, thereby alleviating the adverse effects of high temperature on the battery.

In addition, the setting of the handle 100 and the non-slip foot pad 110 brings convenience to the user, which is convenient for carrying and placing the AC and DC power supply, and improves user experience in terms of details.

Figure 5 shows the 220V AC output port 50a and the AC output button 50b included in the AC and DC power supply in addition to the auxiliary cooling air outlet 90a, the handle 100, and the non-slip foot pad 110, wherein only the AC output button 50b is shown in Figure 5 There are two 220V AC output ports 50a, and in order to support various interface forms of electrical equipment, the 220V AC output port 50a is a universal socket.

Users can charge various electrical equipment with different interface forms through the above-mentioned AC universal socket to meet the various needs of users; moreover, they can also control the working state of the AC power supply through the AC output button, and turn off the AC power supply when the AC power supply is not in use. Just press the button to further ensure safety.

Figure 6 shows not only the auxiliary heat dissipation outlet 90a, the handle 100, and the non-slip foot pad 110, but also the emergency lighting 80, the 12V DC output port 40d, the 24V DC output port 40e, and the charging input port included in the AC and DC power supply. 60.

Wherein, the emergency lighting lamp 80 is an LED lamp, and when the user presses the button of the emergency lighting lamp, the LED lamp will light up, thereby realizing lighting. In addition, the user can decide to use the DC output port corresponding to the electrical equipment according to the power consumption type of the electrical equipment. When the power supply is insufficient, the user can charge the power supply battery through the charging input port 60. In a specific application, the AC and DC power supply is equipped with a power adapter through which an external AC power supply is connected. Specifically, the power adapter can convert the external power supply voltage into a DC voltage corresponding to the lithium battery pack, and then charge the lithium battery pack through the charging board inside the casing.

In addition to showing the handle 100 and the non-slip foot pad 110, Fig. 7 also shows the fan cooling air inlet 90b included in the AC and DC power supply, through which the fan cooling air inlet 90b cooperates with the built-in fan to realize the internal cooling of the AC and DC power supply. Heat dissipation.

Specifically, the casing of the above-mentioned AC and DC power supply is also provided with fixing screw holes at various positions such as the four corners, including the fixing screw holes of the product casing and the fixing screw holes of internal components that can fix the internal control board, protection board, etc., through fixing the casing or the internal Components such as the control board can make the overall structure of the AC and DC power supply more stable.

Based on the above-mentioned external outline structure, here is a brief description of the working mode of the internal circuit structure of the AC and DC power supply: the positive and negative poles of the lithium battery pack are drawn out to 24V (take the lithium battery pack as an example of 24V) to connect to the battery protection board and charge board, through the battery protection board and the charging board, lead out two power lines to the display board and the function control board, while supplying power to the display board and the function control board, the 24V is converted to 12V and 5V respectively through the function control board, so as to It is used through the 12V DC output port and the 5V USB port. In addition, the 24V led by the lithium battery pack is connected to the emergency lighting lamp for its use through the triode switch circuit and the single-chip microcomputer control; there is also a temperature probe on the function control board. When the temperature is detected to be higher than 65°C, the function control board will start the over-temperature protection mechanism; in addition, the positive pole of the battery pack is drawn out from the lithium battery pack, and the negative pole of the battery pack is drawn out from the charging board, and the positive and negative poles drawn out are connected to 24V DC On the output port and the inverter, so that the 24V DC output port outputs 24V DC, and supplies power to the inverter, so that the inverter can work and output AC 220V. Furthermore, the inverter is equipped with a 45°C temperature control switch, and the control circuit corresponding to the temperature control switch is connected to the cooling fan, and the cooling fan is activated when the temperature reaches 45°C to dissipate heat for the power supply. In a specific application, the battery protection board and the charging board have protection functions such as over-current, over-temperature, low-voltage, and over-voltage.

Specifically, the emergency lighting lamp in this embodiment is equivalent to the lighting lamp in the preceding embodiment; the USB DC output port, 12V DC output port and 24V DC output port in this embodiment are equivalent to the DC output port in the foregoing embodiment , the auxiliary heat dissipation air outlet and the fan heat dissipation air inlet in this embodiment are equivalent to the heat dissipation air outlets in the foregoing embodiment, and the 220V AC outlet in this embodiment is equivalent to the AC outlet in the foregoing embodiment.

For a brief description, the internal structure, corresponding implementation principles, and technical effects of the above-mentioned AC and DC power supply are the same as those of the foregoing embodiments. Therefore, for parts not mentioned in this embodiment, reference may be made to the corresponding content in the foregoing embodiments.

To sum up, the AC and DC power supply provided by this embodiment has the following advantages:

(1) Through the new lithium-ion battery, and in the specific implementation, the lithium-ion battery adopts spot welding technology to form a lithium battery pack, which has small size, large capacity, long life, light weight and easy portability;

(2) By installing an inverter connected to the lithium electronic group, it can be used as an AC power supply to supply power to the user's AC power equipment, and the AC output port is a universal socket, which can support various interface forms of power equipment. to provide convenience;

(3) Various DC voltages such as 5V, 12V, and 24V can be output through voltage conversion, and it supports the charging of various types of electrical equipment with different rated voltages to meet user needs;

(4) By setting up a battery management system connected to the lithium battery pack, it can provide relatively complete protection for the battery, such as short-circuit protection, over-temperature protection, over-voltage protection, over-current protection, under-voltage protection, overcharge protection or overcharge protection. Discharge protection ensures safety and prolongs battery life, making it safer and more reliable.

Therefore, the AC and DC power supply provided by this embodiment can provide users with multiple charging methods such as AC and DC charging, and can also provide relatively complete protection for lithium battery packs, comprehensively improve the performance of the power supply, and bring good benefits to users. User experience, can be widely used in medical rescue, emergency communication, environmental monitoring, fire rescue, military camping training, outdoor office, home power failure emergency and mountainous areas without electricity, telecommunications network installation and maintenance optimization, military information company, geographic surveying and mapping work team , absenteeism oil exploration team, architectural design survey, water conservancy and water affairs testing, outdoor shooting of advertising media, forestry and agricultural wild resource inspection and other fields.

The relative steps, numerical expressions and numerical values of the components and steps set forth in the above embodiments do not limit the scope of the present invention unless specifically stated otherwise.

In the several embodiments provided by the embodiments of the present invention, it should be understood that in the disclosed AC and DC power supply, the units described as separate components may or may not be physically separated, and the components displayed as units It may or may not be a physical unit, that is, it may be located in one place, or it may be distributed over multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In addition, in the description of the present utility model, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, Or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. An AC and DC power supply, characterized in that it comprises: a rechargeable battery pack disposed inside the casing, and an inverter and a battery management system respectively connected to the rechargeable battery pack; The exterior of the housing is provided with a DC output port, an AC output port and a charging input port; Wherein, the AC output port is connected to the output terminal of the inverter for outputting AC power; The DC output port and the charging input port are respectively connected to the rechargeable battery pack, the DC output port is used to output DC power, and the charging input port is used to connect to an external power source, which is used for the rechargeable battery pack. Charge; The battery management system is used to protect the rechargeable battery pack, and the protection includes at least one of the following: short circuit protection, over temperature protection, over voltage protection, over current protection, under voltage protection, over charge protection or over put protection. 2. The AC and DC power supply according to claim 1, wherein the battery management system further comprises a control board, a battery protection board and a battery charging board respectively connected to the rechargeable battery pack; The control board is also connected to the battery protection board and the battery charging board for controlling the working status of the battery protection board and the battery charging board; The battery protection board is used to protect the rechargeable battery pack under the control of the control board; The battery charging board is also connected to the charging input port for charging the rechargeable battery pack under the control of the control board. 3. The AC and DC power supply according to claim 2, wherein the battery management system further comprises a temperature sensor, the temperature sensor is connected to the control board, and is used for detecting that the internal temperature of the housing is high. Sending an over-temperature protection signal to the control board at a preset first temperature threshold; After the control board receives the over-temperature protection signal, it triggers the battery protection board to start over-temperature protection. 4. The AC and DC power supply according to claim 2, wherein the battery management system further comprises a voltage converter connected to the control board, and the voltage converter is used to convert The voltage of the rechargeable battery pack is converted into a preset voltage; the voltage value of the preset voltage includes one or more of the following: 5V, 12V or 24V; At least one DC output port connected to the voltage converter is also provided outside the housing for outputting the preset voltage. 5. The AC and DC power supply according to claim 1, characterized in that, the AC and DC power supply also includes an alarm connected to the battery management system, and the battery management system detects that the rechargeable battery pack is working When abnormal, the siren is triggered to give an alarm. 6 . The AC and DC power supply according to claim 1 , wherein a cooling fan is arranged inside the casing, and cooling air outlets are arranged outside the casing, and the cooling air outlets include one or more groups. 7 . 7. The AC-DC power supply according to claim 6, wherein the AC-DC power supply further comprises: a temperature control circuit connected to the inverter, the temperature control circuit connected to the cooling fan; The temperature control circuit is used to start the cooling fan when it detects that the internal temperature of the housing is higher than a preset second temperature threshold. 8. The AC and DC power supply according to claim 2, wherein the battery management system further comprises a display screen and function keys connected to the control board; wherein, the control board receives the function keys In case of a key command, control corresponding to the key command is performed. 9. The AC and DC power supply according to claim 8, wherein a handle is provided on the housing, and the handle is arranged above the housing and is foldable; the AC and DC power supply It also includes a lighting lamp connected to the control board, and the lighting lamp includes an LED lamp. 10. The AC and DC power supply according to any one of claims 1-9, wherein the rechargeable battery pack is a lithium battery pack.