Alternating current and direct current safe output battery of lithium battery

Abstract

The lithium battery AC / DC safe output battery comprises a protection assembly, an early warning assembly, an output assembly and a charging and discharging assembly which are arranged in a mutually matched manner, the protection assembly is used for providing current short-circuit protection, battery temperature protection, over-charge and over-discharge protection, overload protection and overcurrent protection for the battery; the early warning assembly is used for high temperature warning, overload warning and overcurrent warning. The output assembly is used for additionally arranging three groups of direct current output modules to output direct current of different voltage grades; the charging and discharging assembly is used for charging and discharging at the same time; the protection assembly comprises a current short circuit protection device, a battery temperature protection device, an overcharge and overdischarge protection device, an overload protection device and an overcurrent protection device.

Description

Technical field:

[0001] The utility model relates to a lithium battery AC and DC safe output battery. Background technology:

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive and negative electrode materials and a non-aqueous electrolyte solution. Due to the extremely active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements.

[0003] To prevent over-discharge or over-charge of the battery due to improper use, a triple protection mechanism is installed in the single lithium-ion battery. The first is the use of a switching element. When the temperature inside the battery rises, its resistance rises accordingly. When the temperature is too high, it automatically stops supplying power. The second is the selection of appropriate separator materials. When the temperature rises to a certain value, the micron-level micropores on the separator will automatically dissolve, preventing lithium ions from passing through and stopping the reaction inside the battery. The third is the provision of a safety valve. When the internal pressure of the battery rises to a certain value, the safety valve automatically opens to ensure the safety of the battery.

[0004] Most existing safety protection methods only provide charge and discharge protection, overload protection, and short-circuit protection. These protection functions are too few and unsafe to use. During actual battery use, there are multiple potential risks, which can prevent the battery from working stably for a long time. Existing batteries do not support simultaneous charge and discharge operations and can only be used after being fully charged, which limits their use. Utility model content:

[0005] The embodiment of the present utility model provides a lithium battery AC / DC safe output battery with a reasonable structural design. Based on the battery safety protection structure, it cooperates with multiple types of electrical components and functional components. On the basis of the original protection functions, it adds battery short circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection and overcurrent protection. At the same time, it is configured with a warning component to eliminate multiple types of potential risks during battery use, adds multiple DC output channels, and supports simultaneous charging and discharging functions, thereby improving the versatility of the battery, enabling the battery to work stably for a long time, and solving the problems existing in the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A lithium battery AC / DC safe output battery, comprising a protection component, an early warning component, an output component, and a charge-discharge component arranged in coordination with each other; the protection component is used to provide the battery with current short-circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection, and overcurrent protection; the early warning component is used to provide high temperature warning, overload warning, and overcurrent warning; the output component is used to add three sets of DC output modules to output DC power of different voltage levels; the charge-discharge component is used to perform simultaneous charging and discharging;

[0008] The protection component includes a current short-circuit protection device, a battery temperature protection device, an overcharge and over-discharge protection device, an overload protection device, and an overcurrent protection device; the current short-circuit protection device includes a protection board and a current-limiting resistor, so that the protection board can immediately cut off the circuit within 10ms when a short circuit occurs; the battery temperature protection device includes a temperature sensor, which is used to detect the battery temperature and cut off the circuit to achieve a protective effect when the battery temperature is too high; the overcharge and over-discharge protection device includes a voltage detector to detect the voltage of a single battery. During charging, charging will be stopped when the voltage of a single battery reaches 4.2V; during discharging, discharging will be stopped when the voltage of a single battery reaches 3V.

[0009] A radiator is connected to the temperature sensor. The model of the radiator is TC4427. The radiator is provided with 8 pins. Pins 2 and 4 of the radiator are connected to the temperature sensor. Pin 5 of the radiator is provided with a first resistor and a second resistor connected in parallel. A MOS tube is provided on the second resistor. A cooling fan is provided on the MOS tube to start the cooling fan when the temperature is too high.

[0010] The early warning component includes an audible and visual alarm, which includes a first relay and a second relay connected in parallel. The first relay is connected to an indicator light, and the second relay is connected to a loudspeaker to automatically alarm and emit audible and visual alarm signals.

[0011] The output component includes a DC 48V (10A) output channel, a DC 110V (5A) output channel and a DC 220V (5A) output channel, and adopts a chopper-type switching voltage-stabilized power supply to obtain a stable DC output voltage after voltage transformation, rectification and filtering.

[0012] The charging and discharging assembly includes two groups of batteries that cooperate with each other, adopt a pure sine wave output, support simultaneous charging and discharging, and automatically switch within 20ms to provide emergency power supply in the event of a power outage.

[0013] The utility model adopts the above structure, and provides the battery with current short circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection and overcurrent protection through the protection component; high temperature warning, overload warning and overcurrent warning are provided through the early warning component; three groups of DC output modules are added through the output component to output DC power of different voltage levels; simultaneous charging and discharging are performed through the charging and discharging component to provide emergency power supply, which has the advantages of being safe, practical, stable and reliable. Description of the drawings:

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 This is a schematic structural diagram of the protection component of the present invention.

[0016] Figure 3 This is the electrical principle diagram of the battery temperature protection device of the present utility model.

[0017] Figure 4 This is the electrical schematic diagram of the early warning component of the utility model. Specific implementation method:

[0018] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0019] like Figure 1-4 As shown in the figure, a lithium battery AC / DC safe output battery includes a protection component, an early warning component, an output component and a charge-discharge component that are arranged in coordination with each other; the protection component is used to provide the battery with current short-circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection and overcurrent protection; the early warning component is used to provide high temperature warning, overload warning and overcurrent warning; the output component is used to add three groups of DC output modules to output DC power of different voltage levels; the charge-discharge component is used to perform simultaneous charging and discharging;

[0020] The protection component includes a current short-circuit protection device, a battery temperature protection device, an overcharge and over-discharge protection device, an overload protection device, and an overcurrent protection device; the current short-circuit protection device includes a protection board and a current-limiting resistor, so that the protection board can immediately cut off the circuit within 10ms when a short circuit occurs; the battery temperature protection device includes a temperature sensor, which is used to detect the battery temperature and cut off the circuit to achieve a protective effect when the battery temperature is too high; the overcharge and over-discharge protection device includes a voltage detector to detect the voltage of a single battery. During charging, charging will be stopped when the voltage of a single battery reaches 4.2V; during discharging, discharging will be stopped when the voltage of a single battery reaches 3V.

[0021] A radiator is connected to the temperature sensor. The model of the radiator is TC4427. The radiator is provided with 8 pins. Pins 2 and 4 of the radiator are connected to the temperature sensor. Pin 5 of the radiator is provided with a first resistor and a second resistor connected in parallel. A MOS tube is provided on the second resistor. A cooling fan is provided on the MOS tube to start the cooling fan when the temperature is too high.

[0022] The early warning component includes an audible and visual alarm, which includes a first relay and a second relay connected in parallel. The first relay is connected to an indicator light, and the second relay is connected to a loudspeaker to automatically alarm and emit audible and visual alarm signals.

[0023] The output component includes a DC 48V (10A) output channel, a DC 110V (5A) output channel and a DC 220V (5A) output channel, and adopts a chopper-type switching voltage-stabilized power supply to obtain a stable DC output voltage after voltage transformation, rectification and filtering.

[0024] The charging and discharging assembly includes two groups of batteries that cooperate with each other, adopt a pure sine wave output, support simultaneous charging and discharging, and automatically switch within 20ms to provide emergency power supply in the event of a power outage.

[0025] The working principle of a lithium battery AC / DC safety output battery in an embodiment of the present invention is: based on the battery safety protection structure, in conjunction with multiple types of electrical components and functional components, battery short circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection and overcurrent protection are added on the basis of the original protection functions, and a warning component is configured to eliminate multiple types of potential risks during battery use, and multiple DC output channels are added to support simultaneous charging and discharging functions, thereby improving the versatility of the battery and enabling the battery to work stably for a long time.

[0026] The overall solution mainly includes a protection component, an early warning component, an output component and a charge and discharge component that are arranged in coordination with each other; the protection component is used to provide the battery with current short-circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection and overcurrent protection; the early warning component is used to provide high temperature warning, overload warning and overcurrent warning; the output component is used to add three groups of DC output modules to output DC power of different voltage levels; the charge and discharge component is used to perform simultaneous charging and discharging; the protection component includes a current short-circuit protection device, a battery temperature protection device, an overcharge and over-discharge protection device, an overload protection device and an overcurrent protection device; the current short-circuit protection device includes a protection board and a current limiting resistor so that the protection board can immediately cut off the circuit within 10ms when a short circuit occurs; the battery temperature protection device includes a temperature sensor, which is used to detect the battery temperature and cut off the circuit to achieve a protective effect when the battery temperature is too high; the overcharge and over-discharge protection device includes a voltage detector to detect the voltage of a single battery. During charging, charging will be stopped when the voltage of a single battery reaches 4.2V; during discharging, discharging will be stopped when the voltage of a single battery reaches 3V.

[0027] Generally speaking, when a battery short-circuit occurs due to a fault or external force, the current will suddenly increase and break through the current-limiting resistor on the protection board. The protection board will immediately cut off the circuit within 10ms. In actual use, a temperature sensor will be used to detect the battery temperature. If the temperature is too high, the cooling fan will be started. When the temperature reaches the critical value, the temperature sensor will control the mainboard to cut off the circuit, thereby achieving the protection effect.

[0028] Furthermore, when the output power of the device exceeds the peak power, the circuit will be cut off; during discharge, when the output current reaches the maximum limit current, the power will be automatically cut off to protect the entire device circuit.

[0029] The early warning component mainly includes an audible and visual alarm, which includes a first relay and a second relay connected in parallel. An indicator light is connected to the first relay, and a loudspeaker is connected to the second relay. When high temperature, overload and overcurrent occur, the alarm automatically emits an audible and visual alarm signal.

[0030] This application uses a combination of sound alarm and light alarm to provide warnings, and prompts users as intuitively as possible while meeting practical application requirements.

[0031] The radiator of this application is used in conjunction with the temperature sensor on the battery. Its model is TC4427. The radiator is provided with 8 pins. Pins 2 and 4 of the radiator are connected to the temperature sensor. Pin 5 of the radiator is provided with a first resistor and a second resistor connected in parallel. A MOS tube is provided on the second resistor, and a cooling fan is provided on the MOS tube to start the cooling fan when the temperature is too high.

[0032] Preferably, the output component includes a DC 48V (10A) output channel, a DC 110V (5A) output channel and a DC 220V (5A) output channel, and adopts a chopper-type switching regulated power supply. After transformation, rectification and filtering, a stable DC output voltage is obtained, which can be used for DC debugging tests of switch cabinets.

[0033] The simultaneous charge and discharge function of this application preferably uses a pure sine wave output, supporting simultaneous charging and discharging. In the event of a power outage, the internal circuit can automatically switch within 20ms to provide emergency power supply. The charge and discharge function is achieved by two sets of batteries working together. During normal operation, both sets of batteries are charging and discharging, without affecting the power supply within 16A of the electrical equipment.

[0034] To sum up, a lithium battery AC / DC safety output battery in an embodiment of the present invention is based on a battery safety protection structure, and is coordinated with multiple types of electrical components and functional components. On the basis of the original protection functions, it adds battery short circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection and overcurrent protection. At the same time, it is configured with a warning component to eliminate the potential multiple types of risks during battery use, and adds multiple DC output channels to support simultaneous charging and discharging functions, thereby improving the versatility of the battery and enabling the battery to work stably for a long time.

[0035] The above specific implementation methods cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or transformation made to the implementation methods of the present utility model falls within the protection scope of the present utility model.

[0036] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A lithium battery AC / DC safety output battery, characterized by: It includes a protection component, an early warning component, an output component, and a charge-discharge component that are arranged in coordination with each other; the protection component is used to provide the battery with current short-circuit protection, battery temperature protection, overcharge and over-discharge protection, overload protection, and overcurrent protection; the early warning component is used to provide high temperature warning, overload warning, and overcurrent warning; the output component is used to add three groups of DC output modules to output DC power of different voltage levels; the charge-discharge component is used to perform simultaneous charging and discharging; The protection components include a current short circuit protection device, a battery temperature protection device, an overcharge and overdischarge protection device, an overload protection device and an overcurrent protection device; The current short circuit protection device includes a protection board and a current limiting resistor, so that the protection board can immediately cut off the circuit within 10ms when a short circuit occurs; The battery temperature protection device includes a temperature sensor, which is used to detect the battery temperature and cut off the circuit to achieve a protective effect when the battery temperature is too high; the overcharge and over-discharge protection device includes a voltage detector to detect the voltage of a single battery. During charging, charging will be stopped when the voltage of a single battery reaches 4.2V; during discharging, discharging will be stopped when the voltage of a single battery reaches 3V.

2. The lithium battery AC / DC safety output battery according to claim 1, characterized in that: A radiator is connected to the temperature sensor. The model of the radiator is TC4427. The radiator is provided with 8 pins. Pins 2 and 4 of the radiator are connected to the temperature sensor. Pin 5 of the radiator is provided with a first resistor and a second resistor connected in parallel. A MOS tube is provided on the second resistor. A cooling fan is provided on the MOS tube to start the cooling fan when the temperature is too high.

3. The lithium battery AC / DC safety output battery according to claim 1, characterized in that: The early warning component includes an audible and visual alarm, which includes a first relay and a second relay connected in parallel. The first relay is connected to an indicator light, and the second relay is connected to a loudspeaker to automatically alarm and emit audible and visual alarm signals.

4. The lithium battery AC / DC safety output battery according to claim 1, characterized in that: The output component includes a DC 48V (10A) output channel, a DC 110V (5A) output channel and a DC 220V (5A) output channel, and adopts a chopper-type switching voltage-stabilized power supply to obtain a stable DC output voltage after voltage transformation, rectification and filtering.

5. The lithium battery AC / DC safety output battery according to claim 1, characterized in that: The charging and discharging assembly includes two groups of batteries that cooperate with each other, adopts pure sine wave output, supports simultaneous charging and discharging, and automatically switches within 20ms to provide emergency power supply in the event of a power outage.

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