SYSTEM AND METHOD FOR DETERMINING THE CONNECTION STATUS OF THE BATTERY SYSTEM OF A WORK MACHINE

Abstract

A system (200) for determining a connection status of a battery system (120) of a working machine (100) comprises one or more processors (204) configured to detect a key-off event of the working machine (100) based on information (I1) from a communication system (126) of the working machine (100) and, after the key-off event of the working machine (100), to determine that a device (128) connected to an operator of the working machine (100) has moved away from the working machine (100) by the predetermined distance (D1).The one or more processors (204) are also configured to determine, based on the fact that the device (128) has moved at least the predetermined distance (D1) away and based on the fact that the device (128) is unable to communicate with the communication system (126), that the battery system (120) is in a disconnected state, and to indicate to the operator that the battery system (120) is in the disconnected state.

Description

field of technology

[0001] The present disclosure relates to a work machine and a system and method for determining a connection status of a battery system of the work machine. State of the art

[0002] Machines that use battery systems as a source to power one or more machine components may need to be charged at the end of a work shift / day to ensure sufficient energy is available to perform the machine's work during the next work shift / day. The machine operator can place the battery system in a disconnected state before walking away from the machine to prevent the battery system from draining. In some situations, the operator may turn off the machine and connect a battery charger, but out of habit also disconnect the battery system. If the battery system is in the disconnected state, it may not be charged by the battery charger and will not be able to operate during the next work shift / day.

[0003] US Patent No. 10,611,258 describes a vehicle with a low-voltage battery, a high-voltage battery, and a converter that reduces the voltage supplied from the high-voltage battery to the low-voltage battery. A system controller of the vehicle is programmed to use the converter in a key-off cycle to charge the low-voltage battery a calibrated number of times when the low-voltage battery falls below a predefined state-of-charge threshold and to send a wireless notification when the low-voltage battery falls below the threshold a further time. A notification is sent to a predefined contact address when a periodically calculated state-of-charge of a vehicle's low-voltage battery falls below a predefined threshold.Using a converter, the voltage supplied from a high-voltage battery of the vehicle to the low-voltage battery is reduced to charge the low-voltage battery in response to receiving from the contact address a response indicating approval of the charging operation. Brief description of the revelation

[0004] In one aspect of the present disclosure, a system for determining a connection status of a battery system of a work machine is provided. The system includes one or more memories configured to store a predetermined distance. The system also includes one or more processors communicatively coupled to the one or more memories. The one or more processors are configured to detect a key-off event of the work machine based on information from a communication system of the work machine. The one or more processors are further configured to determine, following the work machine key-off event, that a device connected to an operator of the work machine has moved the predetermined distance away from the work machine.The one or more processors are further configured to determine that the battery system is in a disconnected state based on the device having moved at least the predetermined distance and the device being unable to communicate with the communication system. The one or more processors are configured to indicate to the operator that the battery system is in the disconnected state based on the battery system being in the disconnected state.

[0005] In another aspect of the present disclosure, a work machine is provided. The electric work machine includes a battery system configured to provide operating power to one or more components of the work machine. The battery system is switchable between a connected state and a disconnected state. The battery system is connectable to a charging system. The battery system can be charged by the charging system when the battery system is in the connected state, and the battery system cannot be charged by the charging system when the battery system is in the disconnected state. The work machine also includes a communication system configured to indicate a key-off event of the work machine. The work machine further includes a system for determining a connection status of the battery system.The system includes one or more memories configured to store a predetermined distance. The system also includes one or more processors communicatively coupled to the one or more memories. The one or more processors are configured to detect a key-off event of the work machine based on information from a communication system of the work machine. The one or more processors are further configured to determine, following the work machine key-off event, that a device associated with an operator of the work machine has moved the predetermined distance away from the work machine.The one or more processors are further configured to determine that the battery system is in a disconnected state based on the device having moved at least the predetermined distance and the device being unable to communicate with the communication system. The one or more processors are configured to indicate to the operator that the battery system is in the disconnected state based on the battery system being in the disconnected state. The indication to the operator is provided via the device.

[0006] In another aspect of the present disclosure, a method for determining a connection status of a battery system of a work machine is provided. The method includes detecting, by one or more processors, a key-off event of the work machine based on information from a communication system of the work machine. The method includes detecting, by the one or more processors, following the key-off event of the work machine, that a device connected to an operator of the work machine has moved a predetermined distance from the work machine.The method also includes determining, by the one or more processors, that the battery system is in a disconnected state based on the device having moved at least the predetermined distance and the device being unable to communicate with the communication system. The method further includes indicating, by the one or more processors, to the operator that the battery system is in the disconnected state based on the battery system being in the disconnected state.

[0007] Further features and aspects of this disclosure will become apparent from the following description and the accompanying drawings. Short description of the drawings Fig. 1 is a schematic side view of a machine according to an embodiment of the present disclosure; Fig. 2 is a block diagram of a system for determining a connection status of a battery system of the work machine of Fig. 1 according to an embodiment of the present disclosure; Fig. 3 is a schematic diagram illustrating the communication between the working machine and a device connected to an operator of the working machine of Fig. 1, according to an embodiment of the present disclosure; Fig. 4 is a flowchart illustrating a method for determining the connection status of the battery system of the work machine of Fig. 1 according to an embodiment of the present disclosure; and Fig. 5 is a flowchart illustrating a method for determining the connection status of the battery system of the work machine of Fig. 1 according to an embodiment of the present disclosure. Detailed description

[0008] Where possible, the same reference numerals are used throughout the drawings to refer to the same or similar parts.

[0009] With reference to Fig. 1 illustrates a schematic side view of an exemplary machine 100. The work machine 100 is embodied as a wheel loader, which can be used in industries such as construction, landscaping, agriculture, and the like. Alternatively, the work machine 100 can also be embodied as a dump truck, bulldozer, forklift, excavator, tracked tractor, motor grader, and the like, which can be used in various industries to perform one or more jobs.

[0010] The work machine 100 includes a frame 102 that supports various components of the work machine 100. The work machine 100 also includes a hood 104 mounted on the frame 102. The work machine 100 further includes a prime mover 106 supported by the frame 102. The prime mover 106 may be disposed within the hood 104. The prime mover 106 may provide power to various components of the work machine 100 for operational and mobility needs. The prime mover 106 may include a battery module, a fuel cell, and / or a motor. In some examples, the battery module may embody a high-voltage battery system and include one or more battery cells, such as lithium titanate battery cells, to provide operational power to the work machine 100. The fuel cell may include, for example, a hydrogen fuel cell. The engine may include, for example, an internal combustion engine.

[0011] The work machine 100 includes a pair of front wheels 108 and a pair of rear wheels 110. The front wheels 108 and the rear wheels 110 provide the work machine 100 with traction and mobility on the ground. In other examples, the work machine 100 may include two or more pairs of front wheels 108 and / or rear wheels 110. Alternatively, the work machine 100 may include tracks or rollers instead of the wheels 108, 110.

[0012] The work machine 100 further includes an operator cab 112 supported by the frame 102. The operator cab 112 may include one or more input / output modules that allow an operator to control the work machine 100. The work machine 100 also includes a linkage assembly 114 coupled to the frame 102. The linkage assembly 114 is movably coupled to the frame 102. The linkage assembly 114 includes a pair of linkage arms 116 coupled to the frame 102 at one end thereof. The linkage assembly 114 further includes a work tool 118. The work tool 118 may be used to perform one or more work operations. The work tool 118 is embodied herein as a bucket. Alternatively, the work tool 118 may be any other type of work tool known in the art, such as a digger. B.a blade, a fork, a payload carrier that can be raised or lowered, and the like, without any restrictions in this regard.

[0013] As in Fig. As shown in Figure 2, the work machine 100 includes a battery system 120 that provides operating power to one or more components of the work machine 100. The battery system 120 may include a low-voltage battery system. The one or more components may include, for example, headlights, door operators, and / or other electrical systems of the work machine 100. In some examples, the energy of the battery system 120 may be used to actuate the closing of the electrical contacts that connect the battery module of the work machine 100 to the powertrain of the work machine 100. When the battery system 120 is discharged, the work machine 100 may not be able to move in some situations.

[0014] The battery system 120 is switchable between a connected state and a disconnected state. The battery system 120 is connectable to a charging system 122. For example, the battery system 120 can be connected to the charging system 122 at the end of a workday or work shift. Furthermore, the battery system 120 can be charged by the charging system 122 when the battery system 120 is in the connected state, and the battery system 120 cannot be charged by the charging system 122 when the battery system 120 is in the disconnected state.

[0015] Furthermore, a first position sensing device 124 is connected to the work machine 100. The first position sensing device 124 may be attached to the work machine 100 or located external to the work machine 100. The first position sensing device 124 may generate a position signal indicative of a position of the work machine 100. The first position sensing device 124 may include, without limitation, a global positioning system (GPS).

[0016] The work machine 100 further includes a communication system 126. The communication system 126 indicates a key-off event of the work machine 100. As in Fig. 3, the communication system 126 communicates with a device 128 connected to the operator. Furthermore, the communication system 126 also communicates with a cloud system 130. In one example, the communication system 126 may communicate directly with the device 128. Alternatively, the communication system 126 may communicate directly with the device 128 via the cloud system 130. The communication system 126 may utilize a cellular connection, Bluetooth, Wi-Fi, or any other wireless means to establish the desired connection between different systems / devices.

[0017] With further reference to Fig. 2, it should be noted that when the battery device 128 is in the connected state, the communication device 128 is in an active state and can continue to send / receive information related to the work machine 100. When the battery device 128 is in the unconnected state, the communication device 128 is in an inactive state and cannot send / receive information.

[0018] The device 128 connected to the operator may comprise a portable device. For example, the device 128 may comprise a mobile phone or a tablet. Alternatively, the device 128 may comprise any other input / output device known in the art, without any limitations. The device 128 includes a second position sensing device 132. The second position sensing device 132 may generate a position signal indicative of the position of the device 128. The second position sensing device 132 may comprise, without limitation, GPS. Further, the device 128 connected to the operator includes a software application 134. In one example, the software application 134 may be compatible with various operating systems.

[0019] The work machine 100 also includes a battery switch 136. The battery system 120 can be switched between the unconnected state and the connected state based on the position of the battery switch 136. The battery switch 136 can be located outside the work machine 100 near steps leading to the operator cab 112 (see Fig. 1). The operator may actuate the battery switch 136 to switch the battery system 120 to the unconnected state before moving away from the work machine 100 after the key-off event of the work machine 100.

[0020] The present disclosure relates to a system 200 for determining a connection status of the battery system 120 of the work machine 100. In general, the system 200 may be part of or attached to the work machine 100 or the device 128, or it may be separate from both the work machine 100 and the device 128. The system 200 includes one or more memories 202 for storing a predetermined distance D1. The memories 202 may comprise any type of information storage, including a hard disk, an optical disk, a floppy disk, ROM (read only memory), RAM (random access memory), PROM (programmable ROM), EEPROM (electrically erasable PROM), and / or other computer-readable storage media. The memories 202 may store, for example, data such as software applications, algorithms, instructions, and arithmetic operations.

[0021] The system 200 also includes one or more processors 204 communicatively coupled to the one or more memories 202. The processors 204 can execute various types of digitally stored instructions, such as software applications or algorithms retrieved from the memories 202, or a firmware program that enables the processors 204 to perform a variety of operations.

[0022] It should be noted that the one or more processors 204 may consist of a single microprocessor or multiple microprocessors that receive various input signals and generate output signals. Numerous commercially available microprocessors can perform the functions of the one or more processors 204. Each processor 204 may further include a general-purpose processor, a central processing unit, an application-specific integrated circuit (ASIC), a digital signal processor, a field-programmable gate array (FPGA), a digital circuit, an analog circuit, a microcontroller, any other type of processor, or any combination thereof. Each processor 204 may include one or more components operable to execute computer-executable instructions or computer code that may be stored and retrieved in the one or more memories 202.

[0023] In some examples, the one or more memories 202 and the one or more processors 204 may be connected to a controller (not shown). In some examples, the one or more memories 202 and the one or more processors 204 may be located within the device 128. In the example where the memories 202 are located within the device 128, the memories 202 may store the software application 134 therein. In the example where the processors 204 are located within the device 128, the processors 204 may retrieve and execute the software application 134. Alternatively, the one or more memories 202 and the one or more processors 204 may be located external to the device 128.

[0024] The one or more processors 204 are also communicatively coupled to the communication system 126 and the cloud system 130. In one example, the processors 204 may be in direct communication with the communication system 126 of the work machine 100 to receive various information related to the work machine 100, e.g., via Bluetooth. In another example, the processors 204 may be in communication with the communication system 126 of the work machine 100 via the cloud system 130.

[0025] When the "key off" event occurs, the communication system 126 also sends information I1 to the processors 204. In addition to the information I1 indicating the "key off" event, the communication system 126 may also send other indications to the processors 204. In one example, the communication system 126 may send an indication I2 that a charging of the work machine 100 is scheduled. In another example, the communication system 126 may send an indication I3 that a last reported state of charge of the battery system 120 is below a charging threshold. In another example, the communication system 126 may send an indication I4 that a last reported location of the work machine 100 is within a threshold distance of the charging system 122 connected to the work machine 100. In addition, the communication system 126 may provide other indications, e.g.the last reported location of the work machine 100, the end of a work shift, or any other information indicating that the battery system 120 needs to be charged. The communication system 126 may also send an indication I5 that the battery system 120 is already connected to the charging system 122.

[0026] The one or more processors 204 may receive the information I1 and the various instructions I2, I3, I4, I5 directly from the communication system 126 or via the cloud system 130. In some examples, the communication system 126 may also send the various instructions I2, I3, I4, I5 to the software application 134 on the device 128 located at the operator. The software application 134 may receive the information I1 and the instructions I2, I3, I4, I5 directly from the communication system 126. Alternatively, the software application 134 may receive the information I1 and the instructions I2, I3, I4, I5 via the cloud system 130.

[0027] With reference to Fig. 2, the one or more processors 204 detect the key-off event of the work machine 100 based on the information I1 from the communication system 126 of the work machine 100. Further, after the key-off event of the work machine 100, the processors 204 determine that the device 128 associated with the operator of the work machine 100 has moved the predetermined distance D1 from the work machine 100. To determine that the device 128 has moved the predetermined distance D1 from the work machine 100, the one or more processors 204 determine the last reported location of the work machine 100 after the key-off event. The processors 204 may obtain the last reported location of the work machine 100 from the communication system 126 or directly from the first position sensing device 124.Furthermore, the one or more processors 204 also determine a current position of the device 128. The current position of the device 128 may be obtained from the second position sensing device 132. Further, the one or more processors 204 compare the last reported location of the work machine 100 with the current position of the device 128. If the distance between the last reported location of the work machine 100 and the current position of the device 128 is greater than the predetermined distance D1, the processors 204 determine that the device 128 has moved away from the work machine 100 by the predetermined distance D1.

[0028] Further, the one or more processors 204 determine that the device 128 is unable to communicate with the communication system 126. To this end, the one or more processors 204 send one or more communication signals S1 from the device 128 to the communication system 126 of the work machine 100. In one example, the one or more communication signals S1 may be sent to the communication system 126 via the software application 134. The one or more processors 204 also detect from the device 128 that the communication system 126 is unable to receive a communication signal S1 of the one or more communication signals S1. Further, the communication system 126 receives the one or more communication signals S1 only when the battery system 120 is in the connected state.In one example, the processors 204 determine that the communication system 126 is in the active state when the communication system 126 sends a response signal to the device 128, and the processors 204 determine that the communication system 126 is in the inactive state when the communication system 126 does not send a response signal to the device 128.

[0029] Further, the one or more processors 204 determine that the battery system 120 is in the unconnected state based on the device 128 having moved at least the predetermined distance D1 and the device 128 being unable to communicate with the communication system 126. Thus, if the communication system 126 is unable to receive the communication signals S1, the processors 204 determine that the communication system 126 is in the inactive state and the battery system 120 is in the unconnected state.

[0030] Further, the one or more processors 204 indicate to the operator that the battery system 120 is in the unconnected state based on the battery system 120 being in the unconnected state. The indication to the operator is provided by the device 128. To indicate that the battery system 120 is in the unconnected state, the one or more processors 204 notify the operator, via the software application 134 running on the device 128, that the battery system 120 is in the unconnected state. In particular, the processors 204 may send a first notification N1 to notify the operator, via the software application 134, that the battery system 120 is in the unconnected state. The first notification N1 may include a text message, an audio message, and the like.

[0031] Note that to generate the first notification N1, the one or more processors 204 determine whether the battery system 120 should be charged. Therefore, the one or more processors 204 also determine whether the battery system 120 should be charged. In one example, the one or more processors 204 determine that the battery system 120 should be charged based on the indication I3 that the last reported state of charge of the battery system 120 is below the charge threshold. The indication I3 is received by the communication system 126.

[0032] In another example, the one or more processors 204 determine that the battery system 120 should be charged based on the indication I4 that the last reported location of the work machine 100 is within the threshold distance of the charging system 122 connected to the work machine 100. The indication I4 is received from the communication system 126. In another example, the one or more processors 204 determine that the battery system 120 should be charged based on the indication I2 that a charge is scheduled for the work machine 100. The indication I2 is received from the communication system 126. If the processors 204 determine that the battery system 120 needs charging and the charging system 122 is not connected to the battery system 120, the processors 204 generate a second notification N2 to alert the operator that the battery system 120 needs charging.Processors 204 transmit the second notification N2 via the software application 134 running on the device 128. The second notification N2 may include a text message, an audio message, and the like. Thus, the first and second notifications N1, N2 are only generated when the battery system 120 needs to be charged.

[0033] Fig. 4 is an example flowchart illustrating an example method (or algorithm) 400 for determining the connection status of the battery system 120 of the work machine 100. The method 400 may be stored in the memories 202 and retrieved for execution by the processors 204. At a block 402, the processors 204 begin operation. At a block 404, the processors 204 receive the information I1 and the indications I2, I3, I4 from the communication system 126. At a block 406, the processors 204 determine whether the key-off event of the work machine 100 has occurred based on the information I1 received from the communication system 126. If the processors 204 determine that the key-off event has not occurred, the method 400 returns to block 404.However, if the processors 204 determine that the key-off event has occurred, the method 400 proceeds to a block 408.

[0034] At block 408, processors 204 determine whether device 128 has moved the predetermined distance D1 from work machine 100 based on comparing the last reported location of work machine 100 with the current position of device 128. If processors 204 determine that device 128 has not moved the predetermined distance D1 from work machine 100, method 400 proceeds to block 406. However, if processors 204 determine that device 128 has moved the predetermined distance D1 from work machine 100, method 400 proceeds to block 409. At block 409, processors 204 determine whether battery system 120 needs charging. Processors 204 determine whether battery system 120 needs charging based on indications I2, I3, I4.If the battery system 120 does not need to be charged, the method 400 proceeds to a block 416, where the method 400 terminates operation. However, if the processors 204 determine that the battery system 120 needs to be charged, the method 400 proceeds to a block 410.

[0035] In block 410, processors 204 determine whether device 128 is capable of communicating with communication system 126. Specifically, processors 204 transmit the one or more communication signals S1 to communication system 126 via device 128. If processors 204 determine that communication system 126 has received one or more of the communication signals S1, processors 204 determine that communication signal S1 is in the active state and proceed to block 412. In block 412, processors 204 determine whether charging system 122 is connected to battery system 120 based on indication I5 received from communication system 126. If the processors 204 determine that the charging system 122 is not connected to the battery system 120, even if the battery system 120 needs to be charged, the method 400 proceeds to a block 414.At block 414, processors 204 generate the second notification N2 to alert the operator that the battery system 120 needs to be charged. The method 400 then proceeds to block 416, where the method 400 terminates operation. However, if the processors 204 determine at block 412 that the charging system 122 is connected to the battery system 120, the method 400 proceeds to block 416, where the method 400 terminates operation.

[0036] However, if the processors 204 determine at block 410 that the communication system 126 has not received the communication signal S1, the processors 204 determine that the communication system 126 is in the inactive state, and the method 400 proceeds to a block 418. At block 418, the processors 204 determine that the battery system 120 is in the unconnected state. The method 400 proceeds to a block 420 to generate the first notification N1 to indicate to the operator, via the device 128, that the battery system 120 is in the unconnected state. From block 420, the method 400 proceeds to block 416, where the method 400 terminates operation.

[0037] It is understood that individual features shown or described for one embodiment may be combined with individual features shown or described for another embodiment. The implementation described above does not limit the scope of the present disclosure in any way. Although some features are shown or described to illustrate the use of the present disclosure in the context of functional segments, such features may be omitted within the scope of the present disclosure without departing from the spirit of the present disclosure as defined in the appended claims. Industrial applicability

[0038] The present disclosure relates to a system 200 for alerting the operator when the battery system 120 is in the disconnected state. In a situation where the operator of the work machine 100 may switch the battery system 120 to the disconnected state after the end of the workday or work shift, the system 200 determines that the battery system 120 is in the disconnected state and accordingly notifies the operator of the disconnected state of the battery system 120 using the operator-located device 128. The operator may accordingly take action to switch the battery system 120 to the connected state to charge the battery system 120.

[0039] Furthermore, if the system 200 determines that the charging system 122 is not connected to the battery system 120, even if the battery system 120 needs to be charged, the system 200 notifies the operator that the battery system 120 is not charging. Accordingly, the operator can take the necessary actions to connect the battery system 120 to the charging system 122. In this way, the system 200 described herein can ensure that the battery system 120 is charged when the work machine 100 is not in operation, thus enabling use of the work machine 100 during the next work shift or workday.Furthermore, the system 200 described herein can be retrofitted for use with existing work machines and provide a simple and cost-effective technique for ensuring that the battery system 120 is not in a disconnected state and that the battery system 120 is charged.

[0040] In Fig.5 illustrates a flowchart of a method 500 for determining the connection status of the battery system 120 of the work machine 100. The battery system 120 includes the low-voltage battery system. In step 502, the one or more processors 204 detect the key-off event of the work machine 100 based on the information I1 from the communication system 126 of the work machine 100. In step 504, the one or more processors 204 determine that the device 128 connected to the operator of the work machine 100 has moved the predetermined distance D1 from the work machine 100 following the key-off event of the work machine 100.

[0041] In step 506, the one or more processors 204 determine that the battery system 120 is in the unconnected state based on the device 128 having moved at least the predetermined distance D1 and the device 128 being unable to communicate with the communication system 126.

[0042] To determine that the device 128 is unable to communicate with the communication system 126, the one or more processors 204 send the one or more communication signals S1 from the device 128 to the communication system 126 of the work machine 100. Further, the one or more processors 204 detect that the communication system 126 is unable to receive the communication signal S1 of the one or more communication signals S1 at the device 128. The communication system 126 receives the one or more communication signals S1 only when the battery system 120 is in the connected state. Further, the battery system 120 is chargeable by the charging system 122 when the battery system 120 is in the connected state. Furthermore, the battery system 120 is not chargeable by the charging system 122 when the battery system 120 is in the unconnected state.

[0043] To determine that the device 128 has moved the predetermined distance D1 from the work machine 100, the one or more processors 204 also determine the last reported location of the work machine 100 after the key-off event. The one or more processors 204 also determine the current position of the device 128. Further, the one or more processors 204 compare the last reported location of the work machine 100 with the current position of the device 128.

[0044] In step 508, the one or more processors 204 indicate to the operator that the battery system 120 is in the unconnected state based on the battery system 120 being in the unconnected state. The one or more processors 204 indicate to the operator that the battery system 120 is in the unconnected state via the software application 134 running on the device 128.

[0045] Furthermore, the method 500 also includes a step where the one or more processors 204 determine that the battery system 120 should be charged based on the indication I3 that the last reported state of charge of the battery system 120 is below the charging threshold, the indication I4 that the last reported location of the work machine 100 is within the threshold distance of the charging system 122 connected to the work machine 100, or the indication I2 that a charging of the work machine 100 is scheduled.

[0046] While aspects of the present disclosure have been particularly shown and described with reference to the foregoing embodiments, those skilled in the art will understand that various additional embodiments may be contemplated by modifying the disclosed machines, systems, and methods without departing from the spirit and scope of the disclosure. Such embodiments should be understood to fall within the scope of the present disclosure as determined based on the claims and any equivalents thereof. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 10,611,258

[0003]

Claims

[1] A system for determining a connection status of a battery system of a work machine, the system comprising: one or more memories configured to store a predetermined distance; and one or more processors communicatively coupled to the one or more memories, the one or more processors configured to: Detecting, based on information from a communication system of the work machine, a key-off event of the work machine; Determining, after the work machine key-off event, that a device associated with an operator of the work machine has moved the predetermined distance away from the work machine; Determining that the battery system is in a disconnected state based on the device having moved at least the predetermined distance and the device being unable to communicate with the communication system; and Indications to the operator based on the battery system being in the unconnected state that the battery system being in the unconnected state. [2] The system of claim 1, wherein the one or more processors are further configured to determine that the battery system should be charged based on at least one of the following: an indication that the last reported state of charge of the battery system is below a charging threshold; an indication that a last reported location of the work machine is within a threshold distance of a charging system connected to the work machine; and an indication that charging of the work machine is planned. [3] The system of claim 1, wherein the one or more processors are configured to indicate that the battery system is in the unconnected state: Notify the operator that the battery system is in the unconnected state using a software application running on the device. [4] The system of claim 1, wherein the one or more processors are configured to determine that the device is unable to communicate with the communication system: Sending, from the device, one or more communication signals to the communication system of the work machine; and Detecting, in the device, that the communication system is unable to receive a communication signal of the one or more communication signals, wherein the communication system is configured to receive the one or more communication signals only when the battery system is in a connected state, wherein the battery system is rechargeable by a charging system when the battery system is in the connected state, and wherein the battery system cannot be charged by the charging system when the battery system is in the unconnected state. [5] The system of claim 1, wherein the one or more processors are configured to determine that the device has moved the predetermined distance from the work machine: Determining a last reported location of the work machine after the key-off event; Determining a current position of the device; and Comparing the last reported location of the work machine with the current position of the device. [6] The system of claim 1, wherein the battery system comprises a low voltage battery system. [7] The system of claim 1, wherein the work machine further comprises a battery switch, and wherein the battery system is switchable between the unconnected state and a connected state based on a position of the battery switch. [8] Work machine, comprising: a battery system configured to supply operating power to one or more components of the work machine, wherein the battery system is switchable between a connected state and a disconnected state, wherein the battery system is connectable to a charging system, and wherein the battery system is chargeable by the charging system when the battery system is in the connected state, and the battery system is not chargeable by the charging system when the battery system is in the disconnected state; a communication system configured to indicate a key-off event of the work machine; and a system for determining a connection status of the battery system, the system comprising: one or more memories configured to store a predetermined distance; and one or more processors communicatively coupled to the one or more memories, the one or more processors configured to: Detecting, based on information from a communication system of the work machine, a key-off event of the work machine; Determining, after the work machine key-off event, that a device associated with an operator of the work machine has moved the predetermined distance away from the work machine; Determining that the battery system is in a disconnected state based on the device having moved at least the predetermined distance and the device being unable to communicate with the communication system; and Indicating to the operator that the battery system is in the unconnected state based on the battery system being in the unconnected state, the indication to the operator being provided via the device. [9] The work machine of claim 8, wherein the one or more processors are further configured to determine that the battery system is to be charged based on at least one of the following: an indication that the last reported state of charge of the battery system is below a charging threshold; an indication that a last reported location of the work machine is within a threshold distance of the charging system connected to the work machine; and a note that charging is planned for the work machine. [10] The work machine of claim 8, wherein the one or more processors are configured to indicate that the battery system is in the unconnected state: Notify the operator that the battery system is in a disconnected state via a software application running on the device. [11] The work machine of claim 8, wherein the one or more processors are configured to determine that the device is unable to communicate with the communication system: Sending, from the device, one or more communication signals to the communication system of the work machine; and Detecting, in the device, that the communication system is unable to receive a communication signal of the one or more communication signals, wherein the communication system is configured to receive the one or more communication signals only when the battery system is in the connected state, wherein the battery system is chargeable by the charging system when the battery system is in the connected state, and wherein the battery system cannot be charged by the charging system when the battery system is in the unconnected state. [12] The work machine of claim 8, wherein the one or more processors are configured to determine that the device has moved the predetermined distance from the work machine: Determining the last reported location of the work machine after the key-off event; Determining a current position of the device; and Comparing the last reported location of the work machine with the current position of the device. [13] The work machine of claim 8, wherein the battery system comprises a low voltage battery system. [14] The work machine of claim 8, wherein the work machine further comprises a battery switch, and wherein the battery system is switchable between the unconnected state and the connected state based on a position of the battery switch. [15] A method for determining a connection status of a battery system of a work machine, the method comprising: Detecting, by one or more processors, a key-off event of the work machine based on information from a communication system of the work machine; Determining, by the one or more processors, after the work machine key-off event, that a device associated with an operator of the work machine has moved a predetermined distance from the work machine; Determining, by the one or more processors, that the battery system is in a disconnected state based on the device having moved at least the predetermined distance, based on the device not being able to communicate with the communication system; and Indicating, by the one or more processors, to the operator that the battery system is in the unconnected state based on the battery system being in the unconnected state. [16] The method of claim 15, further comprising determining by the one or more processors that the battery system is to be charged based on at least one of the following: an indication that the last reported state of charge of the battery system is below a charging threshold; an indication that a last reported location of the work machine is within a threshold distance of a charging system connected to the work machine; and a note that charging is planned for the work machine. [17] The method of claim 15, wherein the step of indicating to the operator that the battery system is in the unconnected state further comprises: Notifying the operator, by the one or more processors, that the battery system is in the unconnected state via a software application running on the device. [18] The method of claim 15, wherein the step of determining that the device is unable to communicate with the communication system further comprises: Sending one or more communication signals from the device by the one or more processors to the communication system of the work machine; and Detecting, by the one or more processors, that the communication system is unable to receive a communication signal of the one or more communication signals at the device, wherein the communication system is configured to receive the one or more communication signals only when the battery system is in a connected state, wherein the battery system is rechargeable by a charging system when the battery system is in the connected state, and wherein the battery system cannot be charged by the charging system when the battery system is in the unconnected state. [19] The method of claim 15, wherein the step of determining that the device has moved the predetermined distance from the work machine further comprises: determining, by the one or more processors, a last reported location of the work machine after the key-off event; Determining a current position of the device by the one or more processors; and Comparing, by the one or more processors, the last reported location of the work machine with the current position of the device. [20] The method of claim 15, wherein the battery system comprises a low voltage battery system.

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