Battery charging method and system for concrete mixer truck and concrete mixer truck

Abstract

The application relates to a battery charging method and system of a concrete mixer truck and the concrete mixer truck, the method comprising the following steps: acquiring an operation state of the concrete mixer truck and a SoC value of a battery of the concrete mixer truck; determining a charging rule according to the operation state; the charging rule is one of a plurality of preset charging rules; if the operation state is one of a uniform-speed driving state, a braking state and an accelerating driving state, determining a charging mode according to the SoC value based on the charging rule; the charging mode is one of a plurality of preset charging modes; and charging the battery according to the charging mode. Since the charging rule of each operation state is preset, and the SoC value of the battery is considered in the charging rule, the charging mode selected by the scheme is suitable for the current operation state of the concrete mixer truck and the battery power state, so that the scheme can improve the charging performance of the concrete mixer truck.

Description

Technical Field

[0001] This invention relates to the field of concrete mixer truck technology, specifically to a battery charging method, system, and concrete mixer truck for a concrete mixer truck. Background Technology

[0002] A concrete mixer truck is a specialized truck used to transport concrete for construction. It is equipped with a cylindrical mixing drum that carries the mixed concrete. To prevent the concrete from hardening, the mixing drum needs to be kept rotating after the concrete is loaded into it.

[0003] Currently, concrete mixer trucks are equipped with an electric superstructure, which includes a generator and a battery. When the concrete mixer truck is running, the generator charges the battery by taking power from the truck's engine. When the truck stops and unloads, the engine shuts off, the generator stops charging, and the battery takes over from the engine to power the mixing drum, thus maintaining its continuous rotation.

[0004] However, the current method of charging the battery whenever the concrete mixer truck is running (when the engine of the concrete mixer truck is started) has the problem of low charging performance. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a battery charging method, system, and concrete mixer truck.

[0006] The specific solutions of the embodiments in this specification are as follows:

[0007] This specification provides an embodiment of a method for charging the battery of a concrete mixer truck, including:

[0008] Obtain the operating status of the concrete mixer truck and the SoC value of the concrete mixer truck's battery;

[0009] Based on the operating status, a charging rule is determined; the charging rule is one of a plurality of preset charging rules.

[0010] If the operating state is one of constant speed driving state, braking state, and acceleration driving state, then based on the charging rules and the SoC value, the charging mode is determined; the charging mode is one of a plurality of preset charging modes.

[0011] The battery is charged according to the charging mode.

[0012] In this embodiment of the specification, if the operating state is one of constant speed driving, braking, and acceleration driving, then based on the charging rules and the SoC value, the charging mode is determined, specifically including:

[0013] If the operating state is one of constant speed driving, braking, and acceleration driving, then the battery's charge state is determined based on the SoC value. The charge state includes a fully charged state, a state where the SoC value is in the recovery zone, a state where the SoC value is in the circulation zone, a state where the SoC value is in the reserve zone, a state where the SoC value is in the depleted zone, and an uncertain state. Specifically, the SoC value in the recovery zone is less than 1 and greater than or equal to a first preset value; the SoC value in the circulation zone is less than the first preset value and greater than or equal to a second preset value; the SoC value in the reserve zone is less than the second preset value and greater than or equal to a third preset value; and the SoC value in the depleted zone is less than the third preset value.

[0014] Based on the charging rules, the charging mode is determined according to the battery status.

[0015] In this embodiment of the specification, if the operating state is the constant speed driving state, then determining the charging mode based on the charging rules and the battery status specifically includes:

[0016] If the battery status is fully charged or the SoC value is in the recycling zone, then the charging mode is determined to be the stopped charging mode.

[0017] If the battery status indicates that the SoC value is in the cyclic region, then the charging mode is determined to be a cyclic mode; the cyclic mode is a mode in which the normal charging mode and the stopped charging mode are alternately used as the charging mode for the battery.

[0018] If the power status is either the state where the SoC value is in the reserved area or the uncertain state, then the charging mode is determined to be the normal charging mode;

[0019] If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

[0020] In this embodiment of the specification, if the charging mode is the cycle mode, then charging the battery according to the charging mode specifically includes:

[0021] When the SoC value of the battery is equal to the upper limit of the SoC value of the cycle zone, charging of the battery is stopped until the SoC value of the battery is equal to the lower limit of the SoC value of the cycle zone. Then, the battery is charged according to the normal charging mode until the SoC value of the battery is equal to the upper limit of the SoC value of the cycle zone, and charging of the battery is stopped.

[0022] In this embodiment of the specification, if the operating state is the acceleration driving state, then determining the charging mode based on the charging rules and the battery status specifically includes:

[0023] If the battery status is fully charged, the SoC value is in the recycling zone, or the SoC value is in the circulation zone, then the charging mode is determined to be the stopped charging mode.

[0024] If the power status is either the SoC value being in the reserved area or the uncertain state, then the charging mode is determined to be the float charging mode;

[0025] If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

[0026] In this embodiment of the specification, if the operating state is the braking state, then determining the charging mode based on the charging rules and the power status specifically includes:

[0027] If the battery status is "fully charged", then the charging mode is determined to be float charging mode.

[0028] If the battery status is not the fully charged state, then the charging mode is determined to be the energy recovery mode; the energy recovery mode is a mode in which the energy generated when the concrete mixer truck brakes is used to charge the battery.

[0029] The methods in the embodiments of this specification further include:

[0030] If the operating state is either the start state or the stop state, then based on the charging rules, the charging mode is determined to be the stop charging mode.

[0031] This specification also provides an embodiment of a battery charging system for a concrete mixer truck, comprising:

[0032] The acquisition module is used to acquire the operating status of the concrete mixer truck and the SoC value of the concrete mixer truck's battery.

[0033] The charging rule determination module is used to determine the charging rule based on the operating state; the charging rule is one of a plurality of preset charging rules.

[0034] The charging mode determination module is used to determine the charging mode based on the charging rules and the SoC value if the operating state is one of constant speed driving state, braking state, and acceleration driving state; the charging mode is one of a plurality of preset charging modes.

[0035] A charging module is used to charge the battery according to the charging mode.

[0036] This specification also provides a concrete mixer truck, including: the system described above, and a concrete mixer truck body;

[0037] The system is installed on the concrete mixer truck body and is used to charge the battery of the concrete mixer truck body.

[0038] This specification's embodiments employ the above-described technical solution to obtain the operating status of the concrete mixer truck and the SoC value of its battery; based on the operating status, a charging rule is determined; the charging rule is one of multiple preset charging rules; if the operating status is one of constant speed driving, braking, and acceleration driving, then based on the charging rule and the SoC value, a charging mode is determined; the charging mode is one of multiple preset charging modes; and the battery is charged according to the charging mode. Therefore, because charging rules for each operating status are preset, and the charging rules take into account the battery's SoC value, the charging mode selected in this solution is suitable for the current operating status of the concrete mixer truck and the battery's charge level, thereby improving the charging performance of the concrete mixer truck. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0040] Figure 1 This is a schematic flowchart of a battery charging method for a concrete mixer truck provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram illustrating the division of remaining battery power range according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of a charging mode selection strategy provided in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the structure of a battery charging system for a concrete mixer truck provided in an embodiment of the present invention;

[0044] Figure 5 This is a structural schematic diagram of a concrete mixer truck provided in an embodiment of the present invention. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Figure 1 This is a schematic flowchart of a battery charging method for a concrete mixer truck provided in an embodiment of the present invention. Figure 1 As shown, this process includes:

[0047] Step 101: Obtain the operating status of the concrete mixer truck and the remaining power (State of Charge, SoC) value of the concrete mixer truck's battery.

[0048] Step 102: Determine the charging rule based on the operating status; the charging rule is one of a plurality of preset charging rules.

[0049] Step 103: If the operating state is one of constant speed driving state, braking state and acceleration driving state, then based on the charging rules and the SoC value, the charging mode is determined; the charging mode is one of a plurality of preset charging modes.

[0050] Step 104: Charge the battery according to the charging mode.

[0051] In this embodiment of the invention, the operating states of the concrete mixer truck include starting state, constant speed driving state, braking state, acceleration driving state, and engine off state.

[0052] In this embodiment of the invention, since the generator of the concrete mixer truck needs to draw power from the truck's engine to charge the battery, the generator consumes the truck's power. The power requirements of the concrete mixer truck vary under different operating conditions. Therefore, this embodiment pre-sets corresponding charging rules for each operating condition. Subsequently, after obtaining the operating condition of the concrete mixer truck, it can select the most suitable charging rule from multiple preset charging rules based on that operating condition. Thus, the charging mode selected according to that charging rule is also the most suitable for the current operating condition.

[0053] Furthermore, another factor to consider when charging a battery is its remaining charge. Since different operating states have different power requirements, the factors to consider first differ depending on the operating state. Specifically, for operating states with high power requirements, such as starting, the power of the concrete mixer truck needs to be considered first; for operating states with low power requirements, such as constant speed driving, braking, and acceleration, the remaining battery charge needs to be considered first. Therefore, in this embodiment, if the operating state is one of constant speed driving, braking, or acceleration, the charging mode is determined based on the charging rules selected according to the operating state and the battery's SoC value; if the operating state is starting, the remaining battery charge is not considered, and the charging mode is directly determined as the stopped charging mode. In this way, the selected charging mode is most suitable for the current operating state and remaining charge. This helps improve the charging performance of this embodiment.

[0054] This specification's embodiments employ the above-described technical solution to obtain the operating status of the concrete mixer truck and the SoC value of its battery; based on the operating status, a charging rule is determined; the charging rule is one of multiple preset charging rules; if the operating status is one of constant speed driving, braking, and acceleration driving, then based on the charging rule and the SoC value, a charging mode is determined; the charging mode is one of multiple preset charging modes; and the battery is charged according to the charging mode. Therefore, because charging rules for each operating status are preset, and the charging rules take into account the battery's SoC value, the charging mode selected in this solution is suitable for the current operating status of the concrete mixer truck and the battery's charge level, thereby improving the charging performance of the concrete mixer truck.

[0055] In this embodiment of the invention, step 103: If the operating state is one of constant speed driving state, braking state, and acceleration driving state, then based on the charging rules and the SoC value, the charging mode is determined, which may specifically include:

[0056] If the operating state is one of constant speed driving, braking, and acceleration driving, then the battery's charge state is determined based on the SoC value. The charge state includes a fully charged state, a state where the SoC value is in the recovery zone, a state where the SoC value is in the circulation zone, a state where the SoC value is in the reserve zone, a state where the SoC value is in the depleted zone, and an uncertain state. Specifically, the SoC value in the recovery zone is less than 1 and greater than or equal to a first preset value; the SoC value in the circulation zone is less than the first preset value and greater than or equal to a second preset value; the SoC value in the reserve zone is less than the second preset value and greater than or equal to a third preset value; and the SoC value in the depleted zone is less than the third preset value.

[0057] Based on the charging rules, the charging mode is determined according to the battery status.

[0058] Figure 2 This is a schematic diagram illustrating the division of remaining battery power ranges according to an embodiment of the present invention. Figure 2 As shown, in this embodiment of the invention, the remaining battery power is divided into four zones: a recycling zone, a cycling zone, a retention zone, and a depleted zone.

[0059] In the embodiments of this specification, the generator charges the battery in two ways: one is that the generator takes power from the engine of the concrete mixer truck to charge the battery, and the other is that when the concrete mixer truck brakes, the generator uses the energy generated during braking to charge the battery. The battery energy storage space corresponding to the recovery zone is used to store the braking energy recovered by the generator. Therefore, provided that the remaining battery power can meet the actual needs, the remaining battery power should be controlled to be less than or equal to the lower limit of the SoC value of the recovery zone.

[0060] Furthermore, the circulation zone is a transitional area between the retention zone and the recycling zone. Provided the remaining battery power is sufficient to meet actual needs, the remaining battery power should be controlled within this zone. The remaining power in the retention zone is sufficient to meet the electrical needs of the concrete mixer truck when it is stationary. The remaining power in the depleted zone is sufficient to meet the electrical needs of the concrete mixer truck during startup.

[0061] In the embodiments of this specification, the upper and lower limits of the SoC value corresponding to each interval can be determined by those skilled in the art based on the division principles of each interval and actual needs.

[0062] In this embodiment of the invention, if the operating state is one of constant speed driving, braking, and acceleration, then in the process of selecting the charging mode based on the charging rules selected according to the operating state and the battery's SoC value, the battery's state of charge is first determined based on the battery's SoC value. Then, based on the charging rules selected according to the operating state and the state of charge, the charging mode is determined. This simplifies the charging mode selection process and improves the efficiency of charging mode selection.

[0063] Figure 3 This is a schematic diagram of a charging mode selection strategy provided by an embodiment of the present invention. Figure 3 As shown, if the operating state is the constant speed driving state, then determining the charging mode based on the charging rules and the battery status specifically includes:

[0064] If the battery status is fully charged or the SoC value is in the recycling zone, then the charging mode is determined to be the stopped charging mode.

[0065] If the battery status indicates that the SoC value is in the cyclic region, then the charging mode is determined to be a cyclic mode; the cyclic mode is a mode in which the normal charging mode and the stopped charging mode are alternately used as the charging mode for the battery.

[0066] If the power status is either the state where the SoC value is in the reserved area or the uncertain state, then the charging mode is determined to be the normal charging mode;

[0067] If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

[0068] In the embodiments described in this specification, when the concrete mixer truck is traveling at a constant speed, if the remaining battery power is above the recovery zone, the generator stops charging the battery, leaving a power storage space in the battery. Then, when the concrete mixer truck brakes, the electrical energy generated by the generator using the braking energy can be stored in this power storage space.

[0069] Furthermore, as mentioned above, under the premise of meeting actual needs, the remaining battery power should be within the cycle range. Therefore, if the remaining battery power is within the cycle range, the normal charging mode and the stopped charging mode can be selected cyclically as the battery charging mode, so that the remaining battery power is maintained within the cycle range while the concrete mixer truck maintains a constant speed. The normal charging mode is the mode in which the generator charges the battery at the rated charging voltage.

[0070] Furthermore, if the battery's remaining charge is in the reserve range, or if the remaining charge is uncertain, the generator charges the battery in normal charging mode. If the battery's remaining charge is in the depleted range, the generator charges the battery in fast charging mode to improve charging efficiency and shorten charging time, which helps avoid prolonged engine idling and energy consumption. The fast charging mode involves the generator charging the battery at a preset voltage, which is greater than the rated charging voltage.

[0071] In this embodiment of the invention, if the charging mode is the cycle mode, then charging the battery according to the charging mode may specifically include:

[0072] When the battery's SoC value equals the upper limit of the SoC value in the loop zone, charging of the battery stops. Then, when the battery's SoC value equals the lower limit of the SoC value in the loop zone, the battery is charged according to the normal charging mode until the battery's SoC value equals the upper limit of the SoC value in the loop zone, at which point charging stops. This cycle continues until the battery's SoC value is no longer within the loop zone.

[0073] refer to Figure 3 In this embodiment of the invention, if the operating state is the acceleration driving state, then determining the charging mode based on the charging rules and the battery status may specifically include:

[0074] If the battery status is fully charged, the SoC value is in the recycling zone, or the SoC value is in the circulation zone, then the charging mode is determined to be the stopped charging mode.

[0075] If the power status is either the SoC value being in the reserved area or the uncertain state, then the charging mode is determined to be the float charging mode;

[0076] If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

[0077] In this embodiment of the invention, during the acceleration of the concrete mixer truck, in order to improve the truck's power, the generator stops charging the battery when the remaining battery charge is above the circulation zone. When the remaining battery charge is in the reserve zone, or when the remaining battery charge is uncertain, the generator charges the battery in float charging mode. When the remaining battery charge is in the depleted zone, the generator charges the battery in fast charging mode.

[0078] refer to Figure 3In this embodiment of the invention, if the operating state is the braking state, then determining the charging mode based on the charging rules and the battery status may specifically include:

[0079] If the battery status is "fully charged", then the charging mode is determined to be float charging mode.

[0080] If the battery status is not the fully charged state, then the charging mode is determined to be the energy recovery mode; the energy recovery mode is a mode in which the energy generated when the concrete mixer truck brakes is used to charge the battery.

[0081] refer to Figure 3 In this embodiment of the invention, if the operating state is the starting state, in order to improve the power of the concrete mixer truck, the generator always stops charging the battery, regardless of the remaining battery power.

[0082] refer to Figure 3 In this embodiment of the invention, if the operating state is a shutdown state, the generator stops charging the battery.

[0083] Figure 4 This is a structural schematic diagram of a battery charging system for a concrete mixer truck provided in an embodiment of the present invention. Figure 4 As shown, this system includes:

[0084] The acquisition module 41 is used to acquire the operating status of the concrete mixer truck and the SoC value of the battery of the concrete mixer truck.

[0085] The charging rule determination module 42 is used to determine the charging rule based on the operating state; the charging rule is one of a plurality of preset charging rules.

[0086] The charging mode determination module 43 is used to determine the charging mode based on the charging rules and the SoC value if the operating state is one of constant speed driving state, braking state and acceleration driving state; the charging mode is one of a plurality of preset charging modes.

[0087] The charging module 44 is used to charge the battery according to the charging mode.

[0088] In the embodiments described in this specification, the charging module 44 includes a generator; the generator is an axial magnetic field motor.

[0089] In this embodiment of the specification, the charging mode determination module 43 may specifically include:

[0090] A battery status determination submodule is used to determine the battery status based on the SoC value if the operating state is one of constant speed driving, braking, and acceleration driving. The battery status includes a fully charged state, a SoC value in the recovery zone, a SoC value in the circulation zone, a SoC value in the reserve zone, a SoC value in the depleted zone, and an uncertain state. Specifically, the SoC value in the recovery zone is less than 1 and greater than or equal to a first preset value; the SoC value in the circulation zone is less than the first preset value and greater than or equal to a second preset value; the SoC value in the reserve zone is less than the second preset value and greater than or equal to a third preset value; and the SoC value in the depleted zone is less than the third preset value.

[0091] The charging mode determination submodule is used to determine the charging mode based on the charging rules and the battery status.

[0092] In the embodiments of this specification, the charging mode determination submodule can be specifically used for:

[0093] When the operating state is the constant speed driving state, if the battery status is the fully charged state or the SoC value is in the recycling zone, then the charging mode is determined to be the stop charging mode.

[0094] If the battery status indicates that the SoC value is in the cyclic region, then the charging mode is determined to be a cyclic mode; the cyclic mode is a mode in which the normal charging mode and the stopped charging mode are alternately used as the charging mode for the battery.

[0095] If the power status is either the state where the SoC value is in the reserved area or the uncertain state, then the charging mode is determined to be the normal charging mode;

[0096] If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

[0097] In this embodiment of the specification, the charging module 44 can be specifically used for:

[0098] When the operating state is the constant speed driving state, if the battery status is that the SoC value is in the loop zone, then when the SoC value of the battery is equal to the upper limit of the SoC value of the loop zone, charging of the battery is stopped until the SoC value of the battery is equal to the lower limit of the SoC value of the loop zone. Then, the battery is charged according to the normal charging mode until the SoC value of the battery is equal to the upper limit of the SoC value of the loop zone, and then charging of the battery is stopped.

[0099] In the embodiments of this specification, the charging mode determination submodule can be specifically used for:

[0100] When the operating state is the accelerated driving state, if the battery status is the fully charged state, the SoC value is in the recycling zone, or the SoC value is in the circulation zone, then the charging mode is determined to be the stopped charging mode.

[0101] If the power status is either the SoC value being in the reserved area or the uncertain state, then the charging mode is determined to be the float charging mode;

[0102] If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

[0103] In the embodiments of this specification, the charging mode determination submodule can be specifically used for:

[0104] If the battery status is fully charged when the operating state is the braking state, then the charging mode is determined to be the float charging mode.

[0105] If the battery status is not the fully charged state, then the charging mode is determined to be the energy recovery mode; the energy recovery mode is a mode in which the energy generated when the concrete mixer truck brakes is used to charge the battery.

[0106] In this embodiment of the specification, a stop charging mode determination module is also included, which is used to determine the charging mode as a stop charging mode based on the charging rules if the operating state is either a start state or a shutdown state.

[0107] Figure 5 This is a structural schematic diagram of a concrete mixer truck provided in an embodiment of the present invention. Figure 5 As shown, this concrete mixer truck includes: a battery charging system 51 as described in the above embodiments and a concrete mixer truck body 52.

[0108] The battery charging system 51 is installed on the concrete mixer truck body 52 and is used to charge the battery 511 of the concrete mixer truck body 52.

[0109] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0110] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For apparatus embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0111] The steps in the methods of the various embodiments of the present invention can be adjusted, merged, or deleted in order according to actual needs, and the technical features described in the various embodiments can be replaced or combined.

[0112] The modules and sub-modules in the various embodiments of the present invention can be merged, divided, and deleted according to actual needs.

[0113] In the embodiments provided by this invention, it should be understood that the disclosed terminals, devices, and methods can be implemented in other ways. For example, the terminal embodiments described above are merely illustrative. For instance, the division of modules or sub-modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0114] The modules or submodules described as separate components may or may not be physically separate. The components that constitute a module or submodule may or may not be physical modules or submodules; that is, they may be located in one place or distributed across multiple network modules or submodules. Some or all of the modules or submodules can be selected to achieve the purpose of this embodiment's solution, depending on actual needs.

[0115] Furthermore, the functional modules or sub-modules in the various embodiments of the present invention can be integrated into one processing module, or each module or sub-module can exist physically separately, or two or more modules or sub-modules can be integrated into one module. The integrated modules or sub-modules described above can be implemented in hardware or in the form of software functional modules or sub-modules.

[0116] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0117] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software unit executed by a processor, or a combination of both. The software unit can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0118] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0119] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for charging the battery of a concrete mixer truck, characterized in that, include: Obtain the operating status of the concrete mixer truck and the SoC value of the concrete mixer truck's battery; Based on the operating status, determine the charging rules; The charging rule is one of a plurality of preset charging rules; If the operating state is one of constant speed driving, braking, and acceleration driving, then the battery's charge state is determined based on the SoC value. The charge state includes a fully charged state, a state where the SoC value is in the recovery zone, a state where the SoC value is in the circulation zone, a state where the SoC value is in the reserve zone, a state where the SoC value is in the depleted zone, and an uncertain state. Specifically, the SoC value in the recovery zone is less than 1 and greater than or equal to a first preset value; the SoC value in the circulation zone is less than the first preset value and greater than or equal to a second preset value; the SoC value in the reserve zone is less than the second preset value and greater than or equal to a third preset value; and the SoC value in the depleted zone is less than the third preset value. Based on the charging rules and the battery status, a charging mode is determined. The charging mode is one of several preset charging modes. Specifically, if the battery status is fully charged or the SoC value is in the recycling zone, the charging mode is determined to be a stopped charging mode. If the battery status is in the retention zone or an uncertain state, the charging mode is determined to be a normal charging mode. If the battery status is in the circulation zone, the charging mode is determined to be a circulation mode, so that the battery's SoC value remains in the circulation zone while the concrete mixer truck maintains a constant speed. The circulation mode alternates between the normal charging mode and the stopped charging mode as the battery's charging mode. The battery is charged according to the charging mode.

2. The method according to claim 1, characterized in that, If the operating state is the constant speed driving state, then determining the charging mode based on the charging rules and the battery status specifically includes: If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

3. The method according to claim 1, characterized in that, If the charging mode is the cycle mode, then charging the battery according to the charging mode specifically includes: When the SoC value of the battery is equal to the upper limit of the SoC value of the cycle zone, charging of the battery is stopped until the SoC value of the battery is equal to the lower limit of the SoC value of the cycle zone. Then, the battery is charged according to the normal charging mode until the SoC value of the battery is equal to the upper limit of the SoC value of the cycle zone, and charging of the battery is stopped.

4. The method according to claim 1, characterized in that, If the operating state is the acceleration driving state, then determining the charging mode based on the charging rules and the battery status specifically includes: If the battery status is fully charged, the SoC value is in the recycling zone, or the SoC value is in the circulation zone, then the charging mode is determined to be the stopped charging mode. If the power status is either the SoC value being in the reserved area or the uncertain state, then the charging mode is determined to be the float charging mode; If the power status indicates that the SoC value is in the low-power zone, then the charging mode is determined to be fast charging mode.

5. The method according to claim 1, characterized in that, If the operating state is the braking state, then determining the charging mode based on the charging rules and the battery status specifically includes: If the battery status is "fully charged", then the charging mode is determined to be float charging mode. If the battery status is not the fully charged state, then the charging mode is determined to be the energy recovery mode; the energy recovery mode is a mode in which the energy generated when the concrete mixer truck brakes is used to charge the battery.

6. The method according to claim 1, characterized in that, Also includes: If the operating state is either the start state or the stop state, then based on the charging rules, the charging mode is determined to be the stop charging mode.

7. A battery charging system for a concrete mixer truck, characterized in that, include: The acquisition module is used to acquire the operating status of the concrete mixer truck and the SoC value of the concrete mixer truck's battery. The charging rule determination module is used to determine the charging rule based on the operating state; the charging rule is one of a plurality of preset charging rules. The charging mode determination module is used to determine the charging mode based on the charging rules and the SoC value if the operating state is one of constant speed driving state, braking state and acceleration driving state. The charging mode is one of a plurality of preset charging modes; The charging mode determination module specifically includes: A battery status determination submodule is used to determine the battery status based on the SoC value if the operating state is one of constant speed driving, braking, and acceleration driving. The battery status includes a fully charged state, a SoC value in the recovery zone, a SoC value in the circulation zone, a SoC value in the reserve zone, a SoC value in the depleted zone, and an uncertain state. Specifically, the SoC value in the recovery zone is less than 1 and greater than or equal to a first preset value; the SoC value in the circulation zone is less than the first preset value and greater than or equal to a second preset value; the SoC value in the reserve zone is less than the second preset value and greater than or equal to a third preset value; and the SoC value in the depleted zone is less than the third preset value. A charging mode determination submodule is used to determine the charging mode based on the charging rules and the battery status. Specifically, if the battery status is fully charged or the SoC value is in the recycling zone, the charging mode is determined to be a stopped charging mode. If the battery status is in the retention zone or an uncertain zone, the charging mode is determined to be a normal charging mode. If the battery status is in the circulation zone, the charging mode is determined to be a circulation mode, so that the battery's SoC value remains in the circulation zone while the concrete mixer truck maintains a constant speed. The circulation mode alternates between the normal charging mode and the stopped charging mode as the battery's charging mode. A charging module is used to charge the battery according to the charging mode.

8. The system according to claim 7, characterized in that, The charging module includes a generator; The generator is an axial field motor.

9. A concrete mixer truck, characterized in that, include: The system as described in claim 7 or 8, and the concrete mixer truck body; The system is installed on the concrete mixer truck body and is used to charge the battery of the concrete mixer truck body.

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