High anti-interference wireless communication for battery management system

Abstract

The invention relates to high anti-interference wireless communication for a battery management system. Techniques for improving the interference immunity of wireless battery systems by transmitting recoded signals, for example, using a plurality of chips of a sequence for each information bit, in response to interference or interference immunity in data rate exchange upon identification of a noisy environment. These techniques provide the system with an anti-noise mode of operation (or a highly anti-interference transmit and receive mode), which may improve resilience to interference or interference by reducing the data rate. One choice for reducing the data rate is to reduce the transmission bit rate so as to reduce the occupied transmission bandwidth, so that the probability of collision with interference signals is reduced to the greatest extent. Another choice is a digital coding method using forward error correction, such as convolutional coding, Reed-Solomon coding and Turbo coding. The third choice is to use a radio frequency spread spectrum technique, such as direct sequence spread spectrum (DSSS) or frequency hopping spread spectrum (FHSS).

Description

Technical Field

[0001] This document generally relates to, but is not limited to, battery management technology in electric vehicles. Background Art

[0002] The management of battery systems, such as those in electric vehicles, is crucial to ensure the long life, efficiency and reliability of the battery system and the devices powered by the battery system. Proper management requires permanent monitoring of the battery system, for example providing real-time knowledge of the battery cell voltage.

[0003] Battery systems can be wired or wireless. Wireless battery systems can be advantageous because the absence of physical wires eliminates the need for complex installation and maintenance, for example, providing greater flexibility and cost savings to manufacturers. Summary of the invention

[0004] The present disclosure describes various techniques for improving the interference resistance of wireless battery systems by transmitting recoded signals, for example, using multiple chips of a sequence for each information bit, trading data rate for interference or interference resistance in response to identifying a noisy environment. The described techniques provide a system with a noise-resistant operating mode (or a high-interference-resistance transmit and receive mode) that can improve resilience to interference or jammers by reducing the data rate.

[0005] In some aspects, the present disclosure relates to a system for wireless communication in an electric vehicle and having a normal operating mode and an anti-noise operating mode, the system comprising: a first wireless battery cell node that electrically communicates with a first plurality of battery cells, the first wireless battery node comprising a first transceiver device; a battery management system controller subsystem comprising a network manager, wherein the network manager comprises a second transceiver device configured to wirelessly communicate with the first transceiver device, wherein the first transceiver device and the second transceiver device are configured to switch from the normal operating mode to the anti-noise operating mode when a noisy environment is determined to exist, wherein the normal operating mode has a first extension factor, the first extension factor having a first number of transmission bits per bit of information, and wherein the anti-noise operating mode has a second extension factor, the second extension factor having a second number of transmission bits per bit of information that is greater than the first number of transmission bits per bit of information.

[0006] In some aspects, the present disclosure relates to a method for wireless communication in an electric vehicle, the method comprising: electrically coupling a first wireless battery node with a first plurality of battery cells, the first wireless battery node comprising a first transceiver device; wirelessly communicating between the first transceiver device and a second transceiver device, wherein a battery management system controller subsystem comprises a network manager, and wherein the network manager comprises the second transceiver device; and determining that a noisy environment exists, and in response, switching the first transceiver device and the second transceiver device from a normal operating mode to an anti-noise operating mode, wherein the normal operating mode has a first extension factor, the first extension factor having a first number of transmission bits per bit of information, and wherein the anti-noise operating mode has a second extension factor, the second extension factor having a second number of transmission bits per bit of information that is greater than the first number of transmission bits per bit of information.

[0007] In some aspects, the present disclosure relates to a system for wireless communication in an electric vehicle and having a normal operating mode and an anti-noise operating mode, the system comprising: a first wireless battery node electrically coupled to a first plurality of battery cells, the first wireless battery node comprising a first transceiver device; a battery management system controller subsystem comprising a network manager, wherein the network manager comprises a second transceiver device; and a component for determining that a noisy environment exists and, in response, switching the first transceiver device and the second transceiver device from a normal operating mode to an anti-noise operating mode, wherein the normal operating mode has a first extension factor, the first extension factor having a first number of transmission bits per bit of information, and wherein the anti-noise operating mode has a second extension factor, the second extension factor having a second number of transmission bits per bit of information that is greater than the first number of transmission bits per bit of information. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In the accompanying drawings, which are not necessarily drawn to scale, the same numerals may describe similar components in different views. Similar numerals with different letter suffixes may represent different instances of similar components. The accompanying drawings generally illustrate various embodiments discussed in this document by way of example and not limitation.

[0009] Figure 1 is a block diagram of an example of a system for wireless communications in an electric vehicle according to the present disclosure.

[0010] Figure 2 is a flow chart of an example of a method for wireless communication in an electric vehicle according to the present disclosure. DETAILED DESCRIPTION

[0011] Wireless battery systems utilize wireless communication technology for wireless data transmission. Wireless data transmission relies on the transmission and reception of electromagnetic signals to establish communication between devices.

[0012] The inventors have recognized that in certain circumstances, these signals may be interfered with or jammed, which can present significant challenges to the transmission of wireless data. Interference or jamming refers to intentional or unintentional interference with wireless signals, which may be caused by, for example, the creation of noise, the transmission of other signals on the same frequency, or physical obstacles (such as lithium-ion battery cells and metal support structures) that weaken or block the signal path. The effects of interference or jamming can range from temporary disruption to complete interruption of wireless data transmission, which presents a safety hazard to electric vehicles.

[0013] The present disclosure describes various techniques for improving the resistance of wireless battery systems to interference, such as interference or jamming attacks. As described in detail below, the present disclosure describes transmitting a recoded signal, for example, using multiple chips of a sequence for each information bit, in response to identifying a noisy environment in exchange for interference or jamming resistance at the cost of data rate. The techniques described in the present disclosure provide the system 100 with a noise-resistant operating mode (or a high-jam-resistance transmit and receive mode) that can improve resilience to interference or jamming by reducing the data rate. One option for reducing the data rate is to reduce the transmission bit rate to reduce the occupied transmission bandwidth, thereby minimizing the probability of collision with an interfering signal. Another option is to use a digital coding method for forward error correction, such as convolutional coding, Reed-Solomon coding, and Turbo coding. A third option is to use radio frequency spread spectrum technology, such as direct sequence spread spectrum (DSSS) or frequency hopping spread spectrum (FHSS).

[0014] Figure 1 is a block diagram of an example of a system 100 for wireless communication in an electric vehicle 102 according to the present disclosure. The system 100 includes a first wireless cell node 104 in electrical communication with a plurality of battery cells 106. The first wireless battery node 104 includes a wireless transceiver device 108 having an antenna 110 that can communicate with a battery management system controller subsystem 112, particularly a network manager 114, over a wireless network (e.g., 2.4 GHz).

[0015] The first wireless battery node 104 may include a buck converter 116 to reduce the DC voltage of a battery module 118 including a plurality of battery cells 106 to power the transceiver device 108. In addition, the first wireless battery node 104 includes a battery monitoring device 120 configured to receive and monitor the battery cell voltage of each battery cell.

[0016] The battery monitoring device 120 is in electrical communication with the transceiver device 108. In some examples, the transceiver device 108 can transmit battery data including battery voltage, temperature, diagnostic, and current data to the battery management system controller subsystem 112 via the wireless network 122, and the battery management system controller subsystem 112 can then analyze the data about the plurality of battery cells 106, such as by performing various calculations, to determine the state of charge and / or state of health of the battery cells and / or battery modules.

[0017] In other examples, the first wireless battery node 104 may optionally include an edge processor 144 in electrical communication with the battery monitoring device 120 and the transceiver device 108. The edge processor 144 may compress data about the plurality of battery cells 106, for example by performing various calculations to determine the state of charge and / or state of health of the battery cells and / or battery modules. The edge processor 144 may transmit the information to the transceiver device 108, which may then send the compressed data to the battery management system controller subsystem 112. Edge processing may reduce the computational burden on the battery management system controller subsystem 112. The battery management system controller subsystem 112 does not have to perform all of the checks, calculations, etc. Instead, these checks, calculations, etc. may be performed by a battery node such as the first wireless battery node 104, and a subset of the raw measurement data may be communicated via the wireless network 122.

[0018] The network manager 114 includes a transceiver device 124 configured to communicate wirelessly with the transceiver device 108 of the first wireless battery node 104 via an antenna 126. In some examples, the network manager 114 may include another transceiver device 128 configured to communicate wirelessly with the transceiver device 108 of the first wireless battery node 104 via an antenna 130. The network manager 114 may also be in electrical communication with a battery pack monitoring IC 132. The battery pack monitoring IC 132 provides continuous integration of the voltage and current of the full series connection of cells comprising the battery pack to ensure lossless tracking of the charge and energy delivered or received.

[0019] In order to monitor all battery cells in an electric vehicle, for example, 200 battery cells connected in series, the system 100 may include N wireless battery nodes, each of which monitors some battery cells. The Nth wireless battery node 134 includes similar features to the first wireless battery node 104, which will not be described again for the sake of brevity. The transceiver device 136 of the Nth wireless battery node 134 is configured to wirelessly communicate with the first wireless battery node 104 and the battery management system controller subsystem 112.

[0020] For example, direct sequence spread spectrum (DSSS) replaces each data bit with a multi-bit sequence to spread the RF energy over a wider bandwidth. The number of chips per bit is called the spreading ratio. As the spreading ratio and the Hamming distance increase, the signal becomes more immune to interference or jammers. For example, if the spreading ratio is 10, it means there are 10 "chips" for every bit in the original signal. This high-rate binary sequence (the chip code) is used to encode the signal before it is transmitted and decode it when it is received to recover the original data. Coding techniques are used to increase the signal's resistance to noise and interference, as well as its security and privacy, because the signal appears as noise to a receiver that does not know the chips.

[0021] Forward error correction (FEC) codes, such as Reed-Solomon, Turbo, and low-density parity-check (LDPC) codes, have a similar net effect to DSSS. In FEC coding, multiple bits are sent to encode a single bit of information. For example, a 1 / 2 rate Turbo code will send 2 bits for every 1 bit of encoded information. Similar to the spreading factor described in DSSS coding, FEC codes become more effective as the length of the wireless packet increases relative to the information encoded in the packet. To cover the commonalities between DSSS and FEC methods, this article will use the term "stretching factor" to refer to the spreading factor or coding factor.

[0022] Regardless of whether the signal is DSSS or FEC coded, it can be modulated at the transmitter using modulation schemes such as GFSK, OQPSK, and BPSK, and demodulated at the receiver.

[0023] According to the present disclosure, the system 100 has a normal operation mode and an anti-noise operation mode. In order to improve the interference resistance of the system 100, such as interference or jamming attacks, the first transceiver device 108 and the second transceiver device 124 are configured to switch from the normal operation mode to the anti-noise operation mode when it is determined that there is a noisy environment. The normal operation mode has a first extension factor, and each bit of information content has a first number of transmission bits, and the anti-noise operation mode has a second extension factor, wherein the second number of transmission bits per bit of information content is greater than the first number of chips per bit. The increased extension factor in the noise immunity operation mode can improve the immunity of the system 100 to interference and jamming, for example by providing immunity to single-bit errors.

[0024] In some examples, the second extension factor is equal to or greater than twice the first extension factor. In some examples, the first extension factor is 2 and the second extension factor is 20, which can provide a 10 dB improvement. In some examples, the first extension factor is 2 and the second extension factor is 1000, which can provide a 27 dB improvement.

[0025] Figure 1The transceiver device shown in is configured to transmit during various time slots. Using the techniques of the present disclosure, in some examples, the transceiver device 108 of the first wireless battery node 104 is configured to transmit in a first time slot having a first duration during the normal operation mode, and the transceiver device 108 is configured to transmit in a second time slot having a second duration during the anti-noise operation mode. In some examples, the second time slot includes a plurality of the first time slots.

[0026] In some examples, it may be desirable to extend the time spent in each transaction so that the second duration of the noise-resistant operating mode is greater than the first duration of the normal operating mode. As a non-limiting example, the first duration is equal to or greater than 1.5 milliseconds and the second duration is equal to or greater than 70 milliseconds. In this way, the amount of time that the system 100 is allowed to communicate during periods of increased noise is increased, thereby improving immunity to noise. For example, during a time slot with an extended duration, the system 100 can send less data, which can increase the likelihood of correctly receiving the transmitted data. As another example, during a time slot with an extended duration, the same amount of data can be transmitted as the amount of data transmitted in the normal operating mode, which can also increase the likelihood of correctly receiving the transmitted data.

[0027] In other examples, the second duration has the same length or duration as the first duration. For example, during the anti-noise operation mode, the first transceiver device 108 may transmit only some data that should be transmitted in the normal operation mode, such as "critical data", within the same time slot duration. The entire data may be transmitted serially using an additional time slot.

[0028] The techniques described in the present disclosure provide the system 100 with a noise-resistant operating mode (or a high-jam-resistance transmission mode) that can reduce the data rate through digital encoding methods or by slowing down the transmission bit rate, thereby improving resilience to interference or jamming. The battery node can send similarly encoded data, but at a lower frequency and at a slower speed. Alternatively, the battery node can compress the full data into a smaller summary so that less transmission time is required at a slower speed. In addition, the battery node can run a state estimator locally and extend the safety threshold timing at the battery management system controller subsystem 112.

[0029] As described above, when it is determined that a noisy environment exists, the first transceiver device 108 and the second transceiver device 124 are configured to switch from a normal operating mode to an anti-noise operating mode. One or more of the first wireless battery node 104, the network manager 114, and the battery management system controller subsystem 112 are configured to determine that a noisy environment exists. For example, the system 100 includes a detection circuit 138, such as a broadband detector circuit, which is configured to measure the power level or strength of a signal over a wide frequency range. The detection circuit 138 can measure the power level or strength of the signal and send the measurement result to one or more of the first wireless battery node 104, the network manager 114, and the battery management system controller subsystem 112 via a signal 140 from the transceiver device, which can then determine whether a noisy environment exists and can also determine the frequency components of unwanted interfering signals.

[0030] For example, one or more of the first wireless battery node 104, the network manager 114, and the battery management system controller subsystem 112 can use one or more of a packet delivery ratio metric, an inter-packet delay metric, a signal-to-noise ratio metric, and a received signal strength indicator (RSSI) metric to determine that a noisy environment exists. In some examples, the battery node with the problem can make a decision. The transceiver devices of the corresponding wireless battery nodes can each include a microcontroller unit that can perform the calculations required to determine that a noisy environment exists.

[0031] In other examples, the transceiver devices of the network manager 114 may each include a microcontroller unit that may perform the calculations required to determine that a noisy environment exists. Similarly, the battery management system controller subsystem 112 may include a battery management system processor 142 that may perform the calculations required to determine that a noisy environment exists.

[0032] In one example, the battery management system controller 142 may determine that a critical timeout is approaching due to interference or jamming. In response, the battery management system controller 142 may communicate with the network manager 114, and the network manager 114 may switch from a normal operating mode to a noise-resistant operating mode. The network manager 114 may send a broadcast to the network via a mode switch using high-jamming immunity transmissions, where the transmissions may exceed the time slots allocated for the downstream link. In response, a battery node in the network (such as the first wireless battery node 104) switches to sending high-jamming immunity transmissions with a reduced transmission schedule so there are no conflicts.

[0033] In another example, a battery node (e.g., first wireless battery node 104) may determine that it has not received an acknowledgement of the upstream data from network manager 114. In response, the battery node may infer that a critical timeout is approaching. The battery node may use its next scheduled upstream to begin transmission at a regular time, but extend the transmission beyond the time slot boundary.

[0034] In addition to the above techniques, the system 100 can implement a partial switching mode when a noisy environment exists. In the partial switching mode, the network manager 114 having two transceiver devices can cause the first transceiver device to operate in a "slow" mode and the second transceiver device to operate in a "fast" mode. For example, the transceiver device 124 of the network manager 114 can transmit in a first time slot having a first duration during a normal operating mode, and the transceiver device 128 can transmit in a second time slot having a second duration during an anti-noise operating mode, where the second duration is longer than the first duration. By using these techniques, one transceiver device of the network manager 114 can remain on the original transmission schedule and handle any battery nodes that can communicate correctly, while another transceiver device of the network manager 114 can switch to a new transmission schedule suitable for the noisy environment.

[0035] The system 100 can switch back from the anti-noise mode of operation to the normal mode of operation using one or more metrics that the system 100 uses to switch to the anti-noise mode of operation. For example, the detection circuit 138 can periodically send signal information to the transceiver device 108 of the first wireless battery node 104, and the transceiver device 108 can determine whether the interference signal strength (e.g., background RSSI metric) is below a threshold. If the interference signal strength is below the threshold, the system 100 can switch back from the anti-noise mode of operation to the normal mode of operation. If the interference signal strength is not below the threshold, the system 100 can remain in the anti-noise mode of operation and periodically recheck the interference signal strength.

[0036] In addition to the above techniques, one or more transceiver devices of the system 100 are configured to identify re-encoded or unencoded transmissions in real time and decode the transmissions based on the identification, wherein the transmissions sent using the normal operating mode have different error encodings than the transmissions sent using the anti-noise operating mode. These transceiver devices include the transceiver device 108 of the first wireless battery node 104, the transceiver device 136 of the Nth wireless battery node 134, the transceiver device 124 of the network manager 114, and the transceiver device 128 of the network manager 112. As described above, the present disclosure describes a technique for switching from a normal operating mode (short time slots and low code chips per bit) to an anti-noise operating mode (long time slots and high code chips per byte). The decision to switch the operating mode is communicated to other devices in the network by a decision-making entity (battery node, network manager, or controller). In addition, such transmissions are preferably sent using the anti-noise operating mode (high code chips per bit) to maximize the probability of reception in the event of interference or jamming.

[0037] Since the network has not yet switched to the noise-tolerant mode of operation, there are two techniques to send this transmission in the normal mode of operation. In the first technique, a dedicated time slot can be used where all transceiver devices are set up to receive the transmission using the noise-tolerant mode of operation configuration. However, this transmission may be sporadic and having a dedicated time slot may not be the most efficient use of bandwidth.

[0038] In a second technique, any available time slot may be used. In this case, the transceiver device may be configured to identify in real time whether a transmission is recoded (high extension factor) or uncoded (low extension factor) based on the preamble length of the incoming packet. That is, the transceiver device may identify in real time whether a transmission is a first extension factor with a first number of transmission bits per bit of information (normal operating mode) or a second extension factor with a second number of transmission bits per bit of information (anti-noise operating mode). The transceiver device may then apply a corresponding decoding technique, etc., to the transmission based on the identification, wherein a transmission sent using the normal operating mode has a different error coding than a transmission sent using the anti-noise operating mode.

[0039] Figure 2 is a flow chart of an example of a method 200 for wireless communication in an electric vehicle according to the present disclosure. At block 202, the method 200 includes electrically coupling a first wireless battery node with a first plurality of battery cells, the first wireless battery node including a first transceiver device. For example, ( Figure 1 ) The first wireless battery node 104 is electrically coupled to the first plurality of battery cells 106, and the first wireless battery node 104 includes a first transceiver device 108.

[0040] At block 204, the method 200 includes wirelessly communicating between the first transceiver device and the second transceiver device, wherein the battery management system controller subsystem includes a network manager, and wherein the network manager includes the second transceiver device. For example, the first wireless battery node 104 can wirelessly communicate with the second transceiver device 124 of the network manager 114, wherein the network manager 114 forms part of the battery management system controller subsystem 112.

[0041] At block 204 , method 200 includes determining that a noisy environment exists and, in response, switching the first transceiver device and the second transceiver device from a normal operating mode to a noise-resistant operating mode, wherein the normal operating mode has a first stretch factor and wherein the noise-resistant operating mode has a second stretch factor greater than the first stretch factor.

[0042] In some examples, the second extension factor is equal to or greater than 2 times the first extension factor.

[0043] In some examples, determining the presence of a noisy environment uses one or more of a packet delivery ratio metric, an inter-packet delay metric, a signal-to-noise ratio metric, and a received signal strength indicator (RSSI) metric.

[0044] In some examples, method 200 includes transmitting in a first time slot having a first duration during a normal operating mode, and transmitting in a second time slot having a second duration during a noise-resistant operating mode. In some examples, the second duration is greater than the first duration.

[0045] In some examples, method 200 also includes identifying that a transmission from the second transceiver device has the first stretch factor or the second stretch factor, and decoding the identified transmission based on the identification.

[0046] Various annotations

[0047] Each non-limiting claim or example described herein may stand alone or in various permutations or combinations with one or more of the other examples.

[0048] The above detailed description includes references to the accompanying drawings that form a part of the detailed description. The accompanying drawings illustrate specific embodiments in which the present invention can be practiced by way of illustration. These embodiments are also referred to as "examples" in this article. These examples may include elements other than those shown or described. However, the inventors also consider examples that only provide the shown or described elements. In addition, the inventors also consider examples using any combination or permutation of those elements shown or described (or one or more claims thereof), whether with respect to a specific example (or one or more claims thereof) or with respect to other examples shown or described herein (or one or more claims thereof).

[0049] In the event of an inconsistency in usage between this document and any document incorporated by reference, the usage in this document shall control.

[0050] In this document, the terms "a" or "an" are common in patent documents and are used to include one or more, independent of any other instance or usage of "at least one" or "one or more". In this document, the term "or" is used to refer to non-exclusivity, or "A or B" includes "A but not B", "B but not A", and "A and B", unless otherwise stated. In this document, the terms "including" and "wherein" are used as synonyms for the corresponding terms "comprising" and "wherein". In addition, in the following claims, the terms "including" and "comprising" are open-ended, that is, systems, devices, articles, compositions, preparations, or methods that include other elements in addition to the elements listed after the term in the claim are still considered to fall within the scope of the claim. In addition, in the following claims, the terms "first", "second", and "third", etc. are used merely as labels and are not intended to impose numerical requirements on their objects.

[0051] The method examples described herein may be implemented at least in part by a machine or computer. Some examples may include a computer-readable medium or a machine-readable medium encoded with instructions, which may be operable to configure an electronic device to perform the method described in the above examples. The implementation of this method may include code, such as microcode, assembly language code, high-level language code, etc. Such code may include computer-readable instructions for performing various methods. The code may form part of a computer program product. In addition, in one example, the code may be tangibly stored on one or more volatile, non-transient or non-volatile tangible computer-readable media, such as during execution or at other times. Examples of these tangible computer-readable media may include, but are not limited to, a hard disk, a removable disk, a removable optical disk (e.g., an optical disk and a digital video disk), a cassette, a memory card or a memory stick, a random access memory (RAM), a read-only memory (ROM), etc.

[0052] The above description is intended to be illustrative rather than limiting. For example, the above examples (or one or more claims thereof) may be used in combination with each other. Other embodiments may be used, such as by a person of ordinary skill in the art after reading the above description. The abstract is provided to comply with the provisions of Section 1.72 (b) of Chapter 37 of the Code of Federal Regulations, so that the reader can quickly determine the nature of the technical disclosure. The premise of submitting this document is that this document shall not be used to interpret or limit the scope or meaning of the claims. In addition, in the above detailed description, various features may be combined together to simplify the present disclosure. This should not be interpreted as meaning that unclaimed public features are essential to any claim. On the contrary, the subject matter of the present invention may lie in the partial features of a specific disclosed embodiment. Therefore, the following claims are incorporated into the detailed description as examples or embodiments, each claim exists independently as a separate embodiment, and it is conceivable that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalents enjoyed by these claims.

Claims

1. A system for wireless communication in an electric vehicle having a normal operating mode and an anti-noise operating mode, the system comprising: a first wireless battery cell node in electrical communication with a first plurality of battery cells, the first wireless battery node comprising a first transceiver device; a battery management system controller subsystem comprising a network manager, wherein the network manager comprises a second transceiver device configured to wirelessly communicate with the first transceiver device, wherein the first transceiver device and the second transceiver device are configured to switch from the normal operation mode to the anti-noise operation mode when a noisy environment is determined to exist, wherein the normal operation mode has a first extension factor having a first number of transmission bits per bit of information, and wherein the anti-noise operation mode has a second extension factor having a second number of transmission bits per bit of information that is greater than the first number of transmission bits per bit of information.

2. The system of claim 1 , wherein the first transceiver device is configured to transmit in a first time slot having a first duration during the normal operating mode, and wherein the second transceiver device is configured to transmit in a second time slot having a second duration during the anti-noise operating mode.

3. The system of claim 2, wherein the network manager further comprises a third transceiver device, in, the second transceiver device being configured to transmit during the normal operating mode in the first time slot having the first duration, and Wherein the third transceiver device is configured to transmit in the second time slot having the second duration during the noise-resistant operating mode. The system of claim 2 , wherein the second duration is the same as the first duration. The system of claim 2 , wherein the second duration is greater than the first duration.

6. The system of claim 5, wherein the first duration is equal to or greater than 1.5 milliseconds, and wherein the second duration is equal to or greater than 70 milliseconds.

7. The system of claim 2, wherein the second extension factor is equal to or greater than 2 times the first extension factor.

8. The system of claim 1, wherein the first wireless battery node further comprises a first processor configured to compress data regarding the first plurality of battery cells. 9 . The system of claim 1 , wherein the battery management system controller subsystem is configured to analyze data regarding the first plurality of battery cells.

10. The system of claim 1, wherein at least one of the first wireless battery node, the network manager, and the battery management system controller subsystem is configured to determine that the noisy environment exists.

11. The system of claim 10, wherein at least one of the first wireless battery node and the battery management system controller subsystem is configured to determine the presence of the noisy environment using one or more of a packet delivery ratio metric, an inter-packet delay metric, a signal-to-noise ratio metric, and a received signal strength indicator (RSSI) metric.

12. The system of claim 1, wherein the first transceiver device is configured to: identifying that a transmission from the second transceiver device has a first stretch factor or a second stretch factor; and The identified transmission is decoded based on the identification.

13. A method for wireless communication in an electric vehicle, the method comprising: electrically coupling a first wireless battery node to the first plurality of battery cells, the first wireless battery node comprising a first transceiver device; wirelessly communicating between the first transceiver device and a second transceiver device, wherein the battery management system controller subsystem includes a network manager, and wherein the network manager includes the second transceiver device; and determining that a noisy environment exists and, in response, switching the first transceiver device and the second transceiver device from a normal operating mode to a noise-resistant operating mode, wherein the normal operation mode has a first extension factor having a first number of transmission bits per bit of information, and wherein the anti-noise operation mode has a second extension factor having a second number of transmission bits per bit of information that is greater than the first number of transmission bits per bit of information. The method of claim 13 , wherein the second extension factor is equal to or greater than 2 times the first extension factor.

15. The method of claim 13, wherein determining that a noisy environment exists comprises: The presence of a noisy environment is determined using one or more of a packet delivery ratio metric, an inter-packet delay metric, a signal-to-noise ratio metric, and a received signal strength indicator (RSSI) metric.

16. The method according to claim 13, further comprising: During a normal operating mode, transmitting in a first time slot having a first duration; as well as During the noise-resistant operating mode, transmissions are made in second time slots having a second duration. The method of claim 16 , wherein the second duration is greater than the first duration.

18. The method according to claim 13, further comprising: identifying that a transmission from the second transceiver device has a first stretch factor or a second stretch factor; and The identified transmission is decoded based on the identification.

19. A system for wireless communication in an electric vehicle having a normal operating mode and an anti-noise operating mode, the system comprising: a first wireless battery node electrically coupled to the first plurality of battery cells, the first wireless battery node comprising a first transceiver device; a battery management system controller subsystem, comprising a network manager, wherein the network manager comprises a second transceiver device; and means for determining that a noisy environment exists and, in response, switching the first transceiver device and the second transceiver device from a normal operating mode to a noise-resistant operating mode, wherein the normal operation mode has a first extension factor having a first number of transmission bits per bit of information, and wherein the anti-noise operation mode has a second extension factor having a second number of transmission bits per bit of information that is greater than the first number of transmission bits per bit of information.

20. The system of claim 19, wherein the first transceiver device is configured to transmit during the normal operating mode in a first time slot having a first duration, and wherein the second transceiver device is configured to transmit during the anti-noise operating mode in a second time slot having a second duration.

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