Lithium battery

Abstract

A lithium battery, comprising: a battery stack with a noise source, a loudspeaker, a microphone and a processor, wherein the loudspeaker and the microphone are arranged in the battery stack; the microphone is connected to a signal input end of the processor, and is used for acquiring a main noise signal of the noise source and sending the main noise signal to the processor; the processor is used for generating a noise-reduction analog signal on the basis of the main noise signal; and the loudspeaker is connected to a signal output end of the processor, and is used for outputting the noise-reduction analog signal.

Description

A lithium battery Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a lithium battery. Background Art

[0002] Currently, during the charging and discharging process of lithium batteries, fans, air conditioners, battery units and other equipment installed in the charging and discharging environment may generate high noise. This noise may cause physical and psychological harm to on-site workers or nearby residents.

[0003] Therefore, how to provide a low-noise lithium battery is a technical problem that needs to be solved urgently.

[0004] Summary of the Invention

[0005] The purpose of the present disclosure is to provide a low-noise lithium battery.

[0006] To achieve the above objectives, the present disclosure provides a lithium battery, comprising:

[0007] A battery compartment and a first sound insulation layer attached to an inner wall of the battery compartment;

[0008] The battery compartment is provided with a battery stack with a noise source and a second sound insulation layer, a speaker, a microphone, and a processor;

[0009] The loudspeaker and the microphone are arranged in the sound field of the noise source;

[0010] The microphone is connected to the signal input terminal of the processor, and is used to collect the main noise signal of the noise source and send the main noise signal to the processor;

[0011] The processor is configured to generate a noise reduction analog signal according to the main noise signal;

[0012] The speaker is connected to the signal output terminal of the processor and is used to output the noise reduction analog signal to the noise source.

[0013] In an exemplary embodiment, the processor is an active noise cancellation (ANC) module.

[0014] In an exemplary embodiment, the ANC module includes:

[0015] A digital signal processor DSP, an analog-to-digital converter ADC, and a digital-to-analog converter DAC connected in sequence;

[0016] The ADC is used to extract the characteristic audio digital signal from the main noise signal;

[0017] The DSP is used to obtain a noise reduction digital signal according to the characteristic audio digital signal;

[0018] The DAC is configured to generate the noise reduction analog signal according to the noise reduction digital signal.

[0019] In an exemplary embodiment, the noise reduction digital signal and the characteristic audio digital signal have the same frequency and amplitude, but are opposite in phase.

[0020] In an exemplary embodiment, the noise source includes at least one of the following components: a fan, an air conditioner, and a power device.

[0021] In an exemplary embodiment, the processor is disposed in a power distribution cabinet.

[0022] In an exemplary embodiment, the processor, the microphone, and the speaker are powered by a power distribution cabinet.

[0023] In an exemplary embodiment, the sound emission direction of the speaker is opposite to the sound emission direction of the noise source.

[0024] In an exemplary embodiment, there are multiple groups of noise sources, and each group of noise sources is provided with an independent set of speakers and microphones.

[0025] In an exemplary embodiment, the noise reduction analog signals output by each group of speakers and the main noise signal input by the microphone are independent of each other.

[0026] The technical solution of the present disclosure is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following figures are intended only to illustrate and explain the present disclosure and are not intended to limit the scope of the present disclosure.

[0028] FIG1 is a simplified structural diagram of a lithium battery according to an embodiment of the present disclosure; and

[0029] FIG2 is a schematic diagram of the working principle of a lithium battery according to an optional embodiment of the present disclosure; and

[0030] FIG3 is a schematic structural diagram of a lithium battery according to an optional embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below through the accompanying drawings and examples, through which the features and advantages of the present application will become more clear and distinct.

[0032] The word "exemplary" is used exclusively herein to mean "serving as an example, example, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0033] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0034] In this embodiment, a lithium battery is provided. Figure 1 is a simplified schematic diagram of the structure of the lithium battery according to the embodiment of the present disclosure. As shown in Figure 1, the lithium battery may include: a battery compartment and a first sound insulation layer attached to the inner wall of the battery compartment. The first sound insulation layer may be attached to part or all of the interior of the battery compartment.

[0035] The battery compartment is provided with a battery stack with a noise source and a second sound insulation layer, a speaker, a microphone, and a processor.

[0036] The second isolation layer can be used to isolate the battery stack, or to isolate the battery stack, speaker, microphone, and processor. For example, part or all of the periphery of the battery stack can be provided with the second sound insulation layer.

[0037] The first sound insulation layer may be located outside the second sound insulation layer.

[0038] The loudspeaker and the microphone are arranged in the sound field of the noise source.

[0039] There can be multiple battery stacks, each with its own independent noise source, speaker, and microphone. The noise source can be any component within the container that emits sound exceeding a decibel threshold. The microphone can be any sensor capable of capturing analog audio signals.

[0040] The lithium battery may be a container-type lithium battery. The container-type lithium battery may include a container and a battery compartment within the container. The battery compartment may include one or more of the above-mentioned battery stacks.

[0041] In an exemplary embodiment, each battery stack may be configured with a fan and a power device for charging and discharging the lithium battery. In this way, the independent noise source corresponding to each battery stack may include a fan and a power device for charging and discharging the lithium battery.

[0042] The microphone is connected to the signal input terminal of the processor and is used for collecting the main noise signal of the noise source and sending the main noise signal to the processor.

[0043] That is, the microphone can be used to collect the main noise signal of the noise source. Then, the microphone can send the collected main noise signal to the processor through the signal input terminal of the processor.

[0044] The processor may be an integrated circuit chip capable of processing and generating analog signals. The processor may include a signal input terminal and a signal output terminal. The signal input terminal may be a decoder terminal, and the signal output terminal may be an encoder terminal.

[0045] The processor is used to generate a noise reduction analog signal according to the main noise signal.

[0046] The loudspeaker is connected to the signal output terminal of the processor and is used to output the noise reduction analog signal to the noise source.

[0047] That is, after the processor generates the noise reduction analog signal, it can send the noise reduction analog signal to the speaker through the signal output terminal. Then, the speaker can output the noise reduction analog signal.

[0048] The noise reduction analog signal and the main noise signal cancel each other out when they meet.

[0049] For example, the noise reduction analog signal and the main noise signal have the same frequency and amplitude, but opposite phases, so that when the noise reduction analog signal and the main noise signal meet, they can cancel each other out, thereby achieving a noise reduction effect.

[0050] In an embodiment of the present disclosure, the above-mentioned speaker and the above-mentioned microphone are arranged in the above-mentioned battery stack with a noise source. The above-mentioned microphone is connected to the signal input terminal of the above-mentioned processor, and is used to collect the main noise signal of the above-mentioned noise source and send the above-mentioned main noise signal to the above-mentioned processor. The above-mentioned processor is used to generate a noise reduction analog signal based on the above-mentioned main noise signal. The above-mentioned speaker is connected to the signal output terminal of the above-mentioned processor, and is used to output the above-mentioned noise reduction analog signal. In this way, by arranging the above-mentioned speaker and the above-mentioned microphone in the above-mentioned battery stack with a noise source, and making the above-mentioned speaker emit a sound wave with a phase opposite to that of the noise source and the same amplitude as that of the noise source, the technical effect of reducing the noise of the lithium battery can be achieved, thereby solving the technical problem of how to provide a low-noise lithium battery in the related art. In an exemplary embodiment, the above-mentioned processor can be an active noise reduction ANC (Active Noise Cancellation) module.

[0051] The ANC module can be an ANC SoC (System-On-Chip) series chip. By using the above chip, the technical effect of active noise reduction for lithium batteries can be achieved.

[0052] That is, the ANC module can utilize the aforementioned ANC SoC series chips to generate a noise reduction analog signal based on the main noise signal. This noise reduction analog signal can then be used to implement active noise reduction for the lithium battery. In one exemplary embodiment, the ANC module may include a digital signal processor (DSP), an analog-to-digital converter (ADC), and a digital-to-analog converter (DAC) connected in sequence.

[0053] The ADC is used to extract the characteristic audio digital signal from the main noise signal.

[0054] The DSP is used to obtain a noise reduction digital signal according to the characteristic audio digital signal.

[0055] The DAC is used to generate the noise reduction analog signal according to the noise reduction digital signal.

[0056] For example, the ANC module can be an ADAU1777 ANC Audio SoC chip, which includes a codec (ADC, Analog-to-digital converter; DAC, Analog-to-digital converter) with four inputs and two outputs, and a built-in digital signal processor (DSP).

[0057] Through the above embodiment, the ADC can convert the collected noisy audio into a digital signal. The DSP can process this digital signal to calculate a corresponding noise-reduced digital signal. The DAC can convert this noise-reduced digital signal into a noise-reduced analog signal and output this noise-reduced analog signal, achieving the technical effect of accurately reducing the noise of the lithium battery.

[0058] In an exemplary embodiment, the noise reduction digital signal and the characteristic audio digital signal have the same frequency and amplitude, but opposite phases.

[0059] Through the above embodiment, the above noise reduction digital signal and the above characteristic audio digital signal have the same frequency and amplitude but opposite phases, and can cancel each other out when they meet, thereby achieving the technical effect of reducing the noise of the lithium battery.

[0060] In an exemplary embodiment, the noise source includes at least one of the following components: a fan motor, a fan blade, an air conditioner, and a power transmitting device.

[0061] Through the above embodiments, active noise reduction is performed on the fan, air conditioner, and power devices inside the lithium battery, and noise is eliminated from the source, thereby specifically reducing the noise of the lithium battery.

[0062] In an exemplary embodiment, the processor may be disposed in a power distribution cabinet.

[0063] Through the above embodiment, the processor is arranged in the power distribution cabinet, which facilitates power supply and protection of the processor.

[0064] In an exemplary embodiment, the processor, the microphone, and the speaker may be powered by a power distribution cabinet.

[0065] Through the above embodiment, the power distribution cabinet uniformly supplies power to the above processor, the above microphone, and the above speaker, which can reduce the hardware cost of the noise reduction component and improve power supply security.

[0066] In an exemplary embodiment, the sound emission direction of the loudspeaker is opposite to the sound emission direction of the noise source.

[0067] Through the above embodiment, the generation direction of the above speaker is opposite to the sound generation direction of the above noise source, and the noise can be eliminated at a position between the two, thereby compatibility with the influence of circuit signal delay on the noise reduction effect.

[0068] In an exemplary embodiment, there may be multiple groups of noise sources, and each group of noise sources may be provided with an independent group of speakers and microphones, wherein the microphones may also be referred to as receiving microphones, and the speakers may also be referred to as reverse speakers.

[0069] Through the above embodiment, a set of receiving microphones and reverse speakers are arranged for each group of noise sources, which facilitates the collection of noise signals and accurate noise reduction, thereby further reducing the noise of the lithium battery in a targeted manner.

[0070] In an exemplary embodiment, the noise reduction analog signals output by each group of speakers and the main noise signal input by the microphone are independent of each other.

[0071] Through the above embodiment, the main noise signal of each group of noise sources is processed independently, and an independent noise reduction analog signal is generated, which can further reduce the noise of the lithium battery in a targeted manner.

[0072] FIG2 is a schematic diagram of the working principle of a lithium battery according to an optional embodiment of the present disclosure. As shown in FIG2 , the working principle of the lithium battery is as follows:

[0073] The main noise emitted by the noise source is sampled by the receiving microphone (i.e. the above-mentioned microphone) and sent to the ANC module.

[0074] After processing, the ANC module sends anti-frequency noise to the noise source through the speaker.

[0075] The anti-frequency noise is superimposed and synthesized with the main noise to offset the amplitude, thereby reducing the lithium battery noise.

[0076] That is to say, the noise source emits a main noise signal, which is sampled by the receiving microphone. Then, the receiving microphone sends the collected main noise signal to the ANC module. After receiving the main noise signal, the ANC module can process the main noise signal into a corresponding noise reduction analog signal (also called inverse frequency noise). After that, the ANC module sends the processed noise reduction analog signal to the speaker. Finally, the speaker sends a noise reduction analog signal to the noise source. In this way, after the noise reduction analog signal is superimposed on the main noise signal, the main noise signal can be offset, thereby reducing the noise of the lithium battery. Figure 3 is a structural schematic diagram of a lithium battery of an optional embodiment of the present disclosure. As shown in Figure 3, the battery compartment includes: several groups of battery stacks with noise sources, and each group of battery stacks is provided with an inverse speaker (i.e., the above-mentioned speaker) and a receiving microphone.

[0077] That is, the battery compartment may include at least one battery stack with a noise source. For example, the battery compartment may include battery stack 1, battery stack 2, ..., battery stack n, where n may be a positive integer greater than 0.

[0078] Each microphone collects audio from the noise source and sends it to the ANC module in the power distribution cabinet. The ANC module outputs inverse frequency noise to each noise source group through its corresponding inverse speaker. The noise source audio can be considered the primary noise signal, while the inverse frequency noise can be considered the noise reduction analog signal.

[0079] That is to say, the above-mentioned processor can process the main noise signal input by each microphone into a noise reduction analog signal corresponding to each main noise signal. Then, each corresponding noise reduction analog signal is outputted through each speaker. For example, the battery compartment includes a battery stack 1 and a battery stack 2. Battery stack 1 includes a microphone A1 and a speaker B1, and battery stack 2 includes a microphone A2 and a speaker B2. Among them, microphone A1 inputs the main noise signal S1, and microphone A2 inputs the main noise signal S2. In this way, the processor can process the main noise signal S1 into a noise reduction analog signal M1, and process the main noise signal S2 into a noise reduction analog signal M2. Finally, the corresponding noise reduction analog signal M1 can be outputted through the speaker B1, and the corresponding noise reduction analog signal M2 can be outputted through the speaker B2. In this way, the noise reduction analog signal M1 can be targeted to reduce the noise of the main noise signal S1 generated by the battery stack 1, and the noise reduction analog signal M2 can be targeted to reduce the noise of the main noise signal S2 generated by the battery stack 2.

[0080] The processing process of battery stack n can refer to the above description of the processing process of battery stack 1 and battery stack 2, which will not be repeated here.

[0081] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, for system embodiments, since they are basically similar to method embodiments, the description is relatively simple. For relevant parts, refer to the partial description of the method embodiments. In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0082] It should be noted that, unless there is a conflict, the embodiments and features of the embodiments in this disclosure may be combined with each other. This disclosure is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or permutation of these aspects and / or embodiments. Moreover, each aspect and / or embodiment of this disclosure may be used alone or in combination with one or more other aspects and / or embodiments thereof.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure, and they should all be included in the scope of the claims and description of the present disclosure.

Claims

1. A lithium battery, characterized in that, Including: A battery compartment and a first sound insulation layer attached to the inner wall of the battery compartment; A battery stack with a noise source and a second sound insulation layer, a speaker, a microphone, and a processor are arranged in the battery compartment; The speaker and the microphone are arranged within the sound field of the noise source; The microphone is connected to the signal input end of the processor, and is used for collecting the main noise signal of the noise source and sending the main noise signal to the processor; The processor is used for generating a noise reduction analog signal according to the main noise signal; The speaker is connected to the signal output end of the processor, and is used for outputting the noise reduction analog signal to the noise source.

2. The lithium battery according to claim 1, wherein: The processor is an active noise cancellation ANC module.

3. The lithium battery according to claim 2, characterized in that, The ANC module includes: A digital signal processor DSP, an analog-to-digital converter ADC, and a digital-to-analog converter DAC connected in sequence; The ADC is used for extracting the characteristic audio digital signal in the main noise signal; The DSP is used for obtaining a noise reduction digital signal according to the characteristic audio digital signal; The DAC is used for generating the noise reduction analog signal according to the noise reduction digital signal.

4. The lithium battery according to claim 3, wherein: The noise reduction digital signal has the same frequency and amplitude as the characteristic audio digital signal, and the phases are opposite.

5. The lithium battery according to any one of claims 1 to 4, wherein: The noise source includes at least one of the following components: a fan, an air conditioner, and a power device.

6. The lithium battery according to any one of claims 1 to 4, wherein: The processor is arranged in a power distribution cabinet.

7. The lithium battery according to claim 6, wherein: The processor, the microphone, and the speaker are powered by the power distribution cabinet.

8. The lithium battery according to any one of claims 1 to 4, wherein: The sound emitting direction of the speaker is opposite to the sound emitting direction of the noise source.

9. The lithium battery according to any one of claims 1 to 4, wherein: There are multiple groups of noise sources, and each group of noise sources is provided with an independent group of speakers and microphones.

10. The lithium battery according to claim 9, wherein: The noise reduction analog signals output by each group of speakers and the main noise signals input by the microphones are all independent of each other.

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