Starting control system, starting control method and power-assisted trolley

Abstract

The invention discloses a starting control system, a starting control method and a power-assisted trolley, the starting control system comprises a speed regulation system connected with a driving unit, the speed regulation system is provided with a fixed value starting domain and a variable value starting domain, the speed regulation system comprises a speed regulation switch, and the speed regulation switch is suitable for indicating a first output value in the fixed value starting domain; the speed regulating switch is suitable for indicating a second output value in a variable-value starting domain, and when the speed regulating switch is regulated to be in a fixed-value starting domain, the driving unit is suitable for driving the vehicle body to run at the first output value after being started; and when the speed regulating switch is regulated to be in the variable-value starting domain, the driving unit drives the vehicle body to run at the second output value. The driving unit is suitable for driving the trolley body to run at an initial output value lower than the second output value after being started, the initial output value is gradually increased to the second output value, the starting control system can enable the starting form of the trolley to be in a slow starting state, and danger caused by the fact that the trolley reaches a high speed within a short time is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of transport devices and cargo carrying devices, and in particular to a start control system, a start control method and a power trolley. Background Art

[0002] Trolleys are widely used in production and life. They are easy to operate, light in weight, and very convenient for loading and transporting objects over short distances. The original trolleys were pushed and pulled by manpower. For heavier objects or places with steeper slopes, it was very laborious to push or pull with only two hands. Later, small electric-driven trolleys appeared, which could effectively reduce the burden on workers and improve transportation efficiency. This type of trolley usually has different speed gears to meet usage needs.

[0003] However, the existing power-assisted trolleys have the following defects: during the startup process, some electric trolleys currently on the market often have an initial speed that is the speed that is reached instantly at the corresponding gear position. The time from rest to completing the speed increase is too short, which can easily cause a collision with the user's body. For example, when the speed gear is in a high gear, if the user accidentally touches the switch without knowing it, the speed of the trolley will reach the speed of the corresponding high gear position before the user reacts, thereby colliding with the user's body or causing pulling on the user, seriously affecting the user experience and even causing danger. Summary of the invention

[0004] One object of the present application is to provide a starting control system, a starting control method and a power-assisted cart with a gentler starting process.

[0005] To achieve the above objectives, the technical solution adopted in the present application is: a starting control system, comprising a speed control system connected to a drive unit, the speed control system being set with a fixed value starting domain and a variable value starting domain, the speed control system comprising a speed control switch, the speed control switch being suitable for indicating a first output value within the fixed value starting domain, the speed control switch being suitable for indicating a second output value within the variable value starting domain, when the speed control switch is adjusted to the fixed value starting domain, the drive unit being suitable for driving the vehicle body to operate with the first output value after starting, when the speed control switch is adjusted to the variable value starting domain, the drive unit being suitable for driving the vehicle body to operate with an initial output value lower than the second output value after starting, and gradually increasing the initial output value to the second output value.

[0006] Furthermore, a load sensor is provided on the vehicle body, and the load sensor is set with a first sensing weight. The load sensor is suitable for sensing the load of the vehicle body. When the load of the vehicle body exceeds the first sensing weight, the numerical upper limit of the fixed value start-up domain is suitable for partially covering the numerical lower limit of the variable value start-up domain.

[0007] Furthermore, the load sensor is set with a second sensing weight, and the second sensing weight is greater than the first sensing weight. When the load weight of the vehicle body exceeds the second sensing weight, the driving unit is suitable for outputting a third output value. The driving unit is suitable for outputting the first output value or gradually increasing to the third output value after outputting to the first output value or gradually increasing to the third output value after outputting to the second output value.

[0008] Specifically, the calculation formula of the third output value Y is:

[0009] Y=X×E

[0010] Wherein, X is the first output value or the second output value, E is a coefficient, and 1<E≤1.5.

[0011] Further, the driving unit is configured to increase the first output value or the second output value to the third output value in an accelerated state.

[0012] Furthermore, the third output value is not greater than an upper limit of the output value of the driving unit.

[0013] Furthermore, the driving unit is configured to start when the speed control switch is located within the variable value starting domain, and after driving the vehicle body to run with an initial output value lower than the second output value, increase the initial output value to the second output value in an accelerated state.

[0014] Furthermore, the lower limit of the output value of the variable value start domain is configured to be equal to the upper limit of the output value of the fixed value start domain.

[0015] Furthermore, an initial output value of the drive unit when started in the variable value starting domain is configured to be equal to an upper limit value of the fixed value starting domain.

[0016] Furthermore, the first output value is greater than 0, the second output value is greater than the first output value, and the second output value is not greater than an upper limit of the output value of the driving unit.

[0017] Furthermore, the speed regulating switch has a plurality of gears, at least one of the gears is located within the fixed value starting domain, and at least one of the gears is located within the variable value starting domain.

[0018] Furthermore, the speed regulating switch is a stepless switch, and the stepless switch is configured to indicate that when the first output value or the second output value falls within a certain gear range, the output value set by the gear is used as the first output value or the second output value.

[0019] Furthermore, the plurality of gears are distributed in equal proportion within an upper limit range of the output value of the drive unit.

[0020] Furthermore, the first output value, the second output value and the third output value are expressed in the form of output power of the drive unit or speed of the vehicle body.

[0021] Furthermore, it also includes at least one self-propelled switch connected to the driving unit, and the self-propelled switch is suitable for controlling the start and stop of the driving unit.

[0022] A power-assisted cart comprises a body and a driving unit, wherein the driving unit is used for driving the wheels of the body to rotate, and the body is provided with any of the above-mentioned starting control systems.

[0023] A startup control method comprises the steps of:

[0024] S100, multiple power or speed gears are set, and the self-propelled switch is in the closed state in the initial state;

[0025] S200, start the self-propelled switch. If the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear.

[0026] S300, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run at the lowest gear, and then the driving unit gradually increases to the second gear within a first preset time;

[0027] S400, start the self-propelled switch. If the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run at the lowest gear, and then the driving unit gradually increases to the second gear within a first preset time. The driving unit then increases the second gear to the third gear within a second preset time.

[0028] S500, start the self-propelled switch. If the speed control switch is at the highest gear, the drive unit drives the vehicle body to run at the lowest gear, and then the drive unit gradually increases to the second gear within the first preset time. The drive unit then gradually increases the second gear to the highest gear within the third preset time.

[0029] Furthermore, the method further comprises the steps of:

[0030] S600, arranging a load sensor and setting a first sensing weight;

[0031] If the load of the vehicle body does not exceed the first sensing weight, steps S200, S300, S400 and S500 are executed;

[0032] If the vehicle load exceeds the first sensing weight, the following steps are performed:

[0033] S210, starting the self-propelled switch, if the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear;

[0034] S310, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run in the second gear;

[0035] S410, starting the self-propelled switch, if the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run in the second gear, and then the driving unit gradually increases to the third gear within a first preset time;

[0036] S510, start the self-propelled switch. If the speed control switch is in the highest gear, the drive unit drives the vehicle body to run in the second gear, and then the drive unit gradually increases to the third gear within the first preset time. The drive unit then gradually increases the third gear to the highest gear within the third preset time.

[0037] Furthermore, the method further comprises the steps of:

[0038] S700, set the second sensing weight;

[0039] If the load of the vehicle body exceeds the first sensing weight and does not exceed the second sensing weight, steps S210, S310, S410 and S510 are executed;

[0040] If the vehicle load exceeds the second sensing weight, the following steps are performed:

[0041] S220, starting the self-propelled switch, if the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear;

[0042] S320, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run at the second gear, and then the driving unit gradually increases to exceed the second gear within a first preset time;

[0043] S420, starting the self-propelled switch, if the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run at the second gear, then the driving unit gradually increases to the third gear within a first preset time, and then the driving unit gradually increases to exceed the third gear within a second preset time;

[0044] S520, start the self-propelled switch. If the speed control switch is in the highest gear, the drive unit drives the vehicle body to run in the second gear, and then the drive unit gradually increases to the third gear within the first preset time. The drive unit then gradually increases to a gear exceeding the highest gear within the third preset time.

[0045] Specifically, the calculation formula for the power or speed Y obtained after exceeding the gear is:

[0046] Y=X×E

[0047] Wherein, X is the power or speed output at the current gear, E is the coefficient, and 1<E≤1.5.

[0048] Furthermore, the difference between the third preset time and the first preset time is smaller than the first preset time.

[0049] Furthermore, the second preset time is greater than the first preset time and less than the third preset time.

[0050] Compared with the prior art, the beneficial effects of this application are:

[0051] 1. The starting control system of the present application divides the starting states of different gears by setting different starting domains. When the speed control switch is in a gear with a lower speed, the starting control system can control the trolley to directly increase the speed to the speed corresponding to the gear. When the speed control switch is in a gear with a higher speed, the starting control system can control the trolley to start and move at a lower speed first, and then increase to the speed corresponding to the gear within a period of time thereafter, so as to achieve the purpose of slow starting of the trolley. By changing the starting logic, the smoothness and safety of the trolley starting are guaranteed, and the danger caused by the trolley rushing out directly due to excessive speed increase is avoided.

[0052] 2. The starting control system of the present application divides the starting states of different gears under different load weights by setting a load sensor and setting different sensing weights, so that the trolley can start slowly while having sufficient power under different load weights to help users transport.

[0053] 3. The starting control system of the present application separates the speed regulation and start-stop functions of the trolley by setting a speed regulating switch and a self-propelled switch, thereby playing a safety role, improving operational safety, and reducing the probability of the trolley moving due to accidental touching of the operating switch.

[0054] 4. The starting control method of the present application sets multiple starting logics for different gears, so that each gear can be started and operated in a lower initial starting state, and at the same time reach the speed corresponding to the different gears within a period of time thereafter, so as to achieve the purpose of slow starting of the trolley, increase safety, and make the starting feel of each gear consistent, thereby improving control ability. Compared with traditional trolleys, the trolley after using this method can effectively reduce the abrupt acceleration feeling caused by sudden acceleration when starting in different gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 is a graph of output value changes in an initial calibration state according to a preferred embodiment of the present application;

[0056] Figure 2It is a graph of output value changes when the vehicle load exceeds the first sensing weight according to a preferred embodiment of the present application.

[0057] In the figure: 1. Fixed value start domain; 2. Variable value start domain. DETAILED DESCRIPTION

[0058] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0059] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0060] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0061] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0062] The present application is further described below with reference to the accompanying drawings:

[0063] like Figure 1 to Figure 2 As shown, the present application provides a starting control system, including a speed control system connected to a driving unit, the speed control system is set with a fixed value starting domain 1 and a variable value starting domain 2, the speed control system includes a speed control switch, the speed control switch is suitable for indicating a first output value in the fixed value starting domain 1, and the speed control switch is suitable for indicating a second output value in the variable value starting domain 2, the driving unit can make an output judgment based on whether the first output value or the second output value is obtained, thereby realizing different output logics.

[0064] The specific output logic of the drive unit is: when the speed control switch is adjusted to the fixed value starting domain 1, the drive unit is suitable for driving the vehicle body to run with the first output value after starting; when the speed control switch is adjusted to the variable value starting domain 2, the drive unit is suitable for driving the vehicle body to run with an initial output value lower than the second output value after starting, and gradually increasing the initial output value to the second output value.

[0065] The first output value and the second output value are expressed in the form of output power of the drive unit or speed of the vehicle body.

[0066] It is worth noting that the speed expressed as the vehicle body generally refers to the speed of the trolley when it is unloaded, which can avoid the impact of different load weights on the calibration of the first output value and the second output value.

[0067] By setting the fixed value start domain 1 and the variable value start domain 2, the trolley can obtain different start modes. When the speed control switch is in the fixed value start domain 1, the drive unit can directly start the trolley with a fixed power or speed; when the speed control switch is in the variable value start domain 2, the drive unit first starts the trolley with a fixed power or speed lower than the fixed power or speed set by the speed control switch, and then increases the power or speed to the power or speed set by the speed control switch within a period of time. The above system settings can be used to slowly start the trolley when the power or speed set by the speed control switch is high, helping the user to obtain sufficient reaction and control time during the start-up process of the trolley, reducing the difficulty of operation and improving the safety of use.

[0068] The drive unit is configured to start when the speed control switch is located in the variable value start domain 2, and after driving the vehicle body to run with an initial output value lower than the second output value, increase the initial output value to the second output value in an acceleration state, and the acceleration state is usually an uninterrupted acceleration state.

[0069] In some embodiments, the acceleration in the acceleration state remains unchanged, and the cart can be promoted to the second output value in a uniform acceleration state, and the process is smoother.

[0070] In some embodiments, the acceleration in the acceleration state gradually decreases, and the trolley can be increased to the second output value in a variable speed acceleration state, and the initial increase speed is faster, so that the user can feel the difference between different output values ​​when the trolley is started, which is convenient for distinguishing the start-up state.

[0071] In some embodiments, the acceleration in the acceleration state gradually increases, and the trolley can be accelerated to the second output value in a variable speed acceleration state. The initial acceleration speed is slower, so that the user can get a longer reaction time and improve safety.

[0072] The lower limit of the output value of the variable value start domain 2 is configured to be equal to the upper limit of the output value of the fixed value start domain 1, which can make the range of the fixed value start domain 1 and the variable value start domain 2 connected to each other, realize seamless coverage of the start range, and enable the speed control switch to be at least located within the fixed value start domain 1 or the variable value start domain 2, ensuring that the trolley can start smoothly.

[0073] The initial output value of the driving unit when starting in the variable value starting domain 2 is configured to be equal to the upper limit value of the fixed value starting domain 1, that is, when the driving unit is started in the variable value starting domain 2, it can output with the maximum first output value, so that the starting state of the trolley under the initial output value can be connected with the starting state in the fixed value starting domain 1, avoiding the trolley from starting suddenly slower than starting in the fixed value starting domain 1 when starting at the initial output value, affecting the user's operating experience and smoothness.

[0074] The first output value is greater than 0, and the second output value is greater than the first output value. Therefore, the numerical range of the variable value start domain 2 is generally greater than the numerical range of the fixed value start domain 1, so that the drive unit can be directly started under low output values ​​and can be slowly started under high output values, thereby improving safety of use.

[0075] It is worth noting that the second output value is not greater than the upper limit of the output value of the drive unit, so as to avoid overload and damage to the drive unit and improve the operating stability of the drive unit.

[0076] like Figure 2 As shown, a load sensor is provided on the vehicle body, and the load sensor is set with a first sensing weight. The load sensor is suitable for sensing the load of the vehicle body. When the load of the vehicle body exceeds the first sensing weight, the numerical upper limit of the fixed value starting domain 1 is suitable for partially covering the numerical lower limit of the variable value starting domain 2, that is, the range of the fixed value starting domain 1 is increased and the variable value starting domain 2 is reduced, so that the output value originally in the variable value starting domain 2 falls into the fixed value starting domain 1 and can be output as the first output value, which can be directly reflected to the outside as part of the gear that should have been slowly started, and can be directly started after the load of the vehicle body exceeds the first sensing weight.

[0077] The setting of the first sensing weight enables the trolley to start quickly and reduce the acceleration time by eliminating the need for slow starting at some gears with lower starting speeds when carrying a heavy weight.

[0078] It is worth noting that the priority of the fixed value start domain 1 must be greater than the priority of the variable value start domain 2. When the numerical upper limit of the fixed value start domain 1 partially covers the numerical lower limit of the variable value start domain 2, when the speed control switch is located in the fixed value start domain 1 and the variable value start domain 2 at the same time, it will be determined to be located in the fixed value start domain 1 and output.

[0079] A specific example is: when the load weight of the vehicle body does not exceed the first sensing weight, the output value range of the fixed value start domain 1 is 0 to 20%, and the output value range of the variable value start domain 2 is 20% to 100%. In the output value range of 0 to 20%, the drive unit outputs the first output value, and after the output value exceeds 20%, the drive unit outputs the second output value;

[0080] When the load of the vehicle exceeds the first sensing weight, the upper limit of the fixed value start domain 1 partially covers the lower limit of the variable value start domain 2, from the original 20% to 40%. At this time, the output value range of the fixed value start domain 1 is 0 to 40%, while the output value range of the variable value start domain 2 is still 20% to 100% or changes to 40% to 100%, which can be set according to the system's operating performance and operating efficiency;

[0081] The above priority setting is mainly to avoid the situation where the output error is caused by the numerical upper limit of the fixed value starting domain 1 being increased while the numerical lower limit of the variable value starting domain 2 is not increased. In this state, the fixed value starting domain 1 and the variable value starting domain 2 cover the range of 20% to 40% at the same time, but the output will still be performed with the fixed value starting domain 1, so that the drive unit outputs the first output value within the output value range of 0 to 40%.

[0082] The load sensor is set with a second sensing weight, and the second sensing weight is greater than the first sensing weight. When the load of the vehicle body exceeds the second sensing weight, the driving unit is suitable for outputting a third output value. The driving unit is suitable for outputting the first output value or gradually increasing to the third output value for output after outputting to the first output value or gradually increasing to the third output value for output after outputting to the second output value.

[0083] The setting of the second sensing weight enables the trolley to utilize an additional preset output value boost, i.e., power boost, to compensate for the increased work caused by the weight increase when carrying a heavier weight, thereby ensuring that it can achieve the same or similar travel speed as that in an unloaded state.

[0084] In some embodiments, the third output value may be expressed in a form including the output power of the drive unit or the speed of the vehicle body.

[0085] The calculation formula of the third output value Y is:

[0086] Y=X×E

[0087] Wherein, X is the first output value or the second output value, E is a coefficient, and 1<E≤1.5.

[0088] The driving unit is configured to increase the first output value or the second output value to a third output value in an accelerated state.

[0089] In some embodiments, the acceleration curve from the second output value to the third output value can be connected to the acceleration curve from the first output value to the second output value, so that the acceleration process is smoother.

[0090] According to the acceleration curve from the first output value to the second output value, the acceleration curve from the second output value to the third output value can also produce three situations, namely, uniform acceleration or variable acceleration.

[0091] It is worth noting that the third output value must also not be greater than the upper limit of the output value of the drive unit to avoid overload and damage to the drive unit and improve the operating stability of the drive unit.

[0092] In some embodiments, when the difference between the second output value and the upper limit of the output value of the driving unit is smaller than the amplitude by which the third output value is to be increased, the upper limit of the output value of the driving unit is directly regarded as the third output value.

[0093] In some embodiments, when the second output value is equal to the upper limit of the output value of the driving unit, the upper limit of the output value of the driving unit may also be regarded as the third output value. In this case, the second output value and the third output value are equal.

[0094] The speed regulating switch has multiple gears, at least one gear is located in the fixed value starting domain 1, and at least one gear is located in the variable value starting domain 2.

[0095] In some embodiments, the lowest gear is located in the fixed value start-up domain 1, and the remaining gears are all located in the variable value start-up domain 2. The initial output values ​​of the gears located in the variable value start-up domain 2 are all the first output values ​​corresponding to the lowest gear. The lowest gear is used as a reference, and the remaining gears all have a slow start state, which is in line with the user's operating intuition.

[0096] The speed control switch is a stepless switch, which provides a better adjustment feel and a simpler adjustment method.

[0097] In some embodiments, when the stepless switch is configured to indicate a first output value or a second output value that falls within a certain gear range, the output value set for that gear is used as the first output value or the second output value. The advantage of this is that it avoids accidentally touching the stepless switch and causing the output value to change, thereby improving operational stability.

[0098] In some embodiments, the stepless switch is configured to directly output the indicated first output value or the second output value. Compared with setting a fixed gear, the travel speed of the cart can be adjusted more finely, and the early measurement and calibration of the gear can be reduced, which can reduce the design workload.

[0099] In some embodiments, the plurality of gears are distributed in equal proportion within an upper limit range of the output value of the drive unit.

[0100] In some embodiments, multiple gears can be set to specific output values, and the selection of the output value can be measured and calibrated according to the actual speed of the cart.

[0101] It also includes at least one self-propelled switch connected to the drive unit. The self-propelled switch is suitable for controlling the start and stop of the drive unit, and separately controlling the speed adjustment and start and stop functions of the trolley, thereby playing a safety role, improving operational safety, and reducing the probability of the trolley moving due to accidental touching of the switch.

[0102] The present application also provides a power-assisted cart, comprising a body and a drive unit, wherein the drive unit is used to drive the wheels of the body to rotate, and the body is provided with a start control system according to any of the above embodiments.

[0103] The structure of some embodiments of the power-assisted trolley may be: it also includes a power supply unit, the power supply unit is used to supply power to the drive unit, wheels are provided on the vehicle body, the drive unit is used to drive at least one wheel to rotate, so that the vehicle body can move forward or backward with the help of the drive unit, the vehicle body includes a frame and an operating rod, the frame has a accommodating space for accommodating objects, the operating rod is connected to the frame, and the speed control switch and the self-propelled switch are both provided on the operating rod.

[0104] In some embodiments, the frame is configured as a foldable frame.

[0105] like Figure 1 As shown, the present application also provides a startup control method, comprising the steps of:

[0106] S100, multiple power or speed gears are set, and the self-propelled switch is in the closed state in the initial state;

[0107] S200, start the self-propelled switch. If the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear.

[0108] S300, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run at the lowest gear, and then the driving unit gradually increases to the second gear within a first preset time;

[0109] S400, start the self-propelled switch. If the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run at the lowest gear, and then the driving unit gradually increases to the second gear within a first preset time. The driving unit then increases the second gear to the third gear within a second preset time.

[0110] S500, start the self-propelled switch. If the speed control switch is at the highest gear, the drive unit drives the vehicle body to run at the lowest gear, and then the drive unit gradually increases to the second gear within the first preset time. The drive unit then gradually increases the second gear to the highest gear within the third preset time.

[0111] like Figure 2 As shown, the steps include:

[0112] S600, arranging a load sensor and setting a first sensing weight;

[0113] If the load of the vehicle body does not exceed the first sensing weight, steps S200, S300, S400 and S500 are executed;

[0114] If the vehicle load exceeds the first sensing weight, the following steps are performed:

[0115] S210, starting the self-propelled switch, if the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear;

[0116] S310, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run in the second gear;

[0117] S410, starting the self-propelled switch, if the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run in the second gear, and then the driving unit gradually increases to the third gear within a first preset time;

[0118] S510, start the self-propelled switch. If the speed control switch is in the highest gear, the drive unit drives the vehicle body to run in the second gear, and then the drive unit gradually increases to the third gear within the first preset time. The drive unit then gradually increases the third gear to the highest gear within the third preset time.

[0119] Also includes the steps:

[0120] S700, set the second sensing weight;

[0121] If the load of the vehicle body does not exceed the first sensing weight, steps S200, S300, S400 and S500 are executed;

[0122] If the load of the vehicle body exceeds the first sensing weight and does not exceed the second sensing weight, steps S210, S310, S410 and S510 are executed;

[0123] If the vehicle load exceeds the second sensing weight, the following steps are performed:

[0124] S220, starting the self-propelled switch, if the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear;

[0125] S320, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run at the second gear, and then the driving unit gradually increases to exceed the second gear within a first preset time;

[0126] S420, starting the self-propelled switch, if the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run at the second gear, then the driving unit gradually increases to the third gear within a first preset time, and then the driving unit gradually increases to exceed the third gear within a second preset time;

[0127] S520, start the self-propelled switch. If the speed control switch is in the highest gear, the drive unit drives the vehicle body to run in the second gear, and then the drive unit gradually increases to the third gear within the first preset time. The drive unit then gradually increases to a gear exceeding the highest gear within the third preset time.

[0128] The formula for calculating the power or speed Y obtained after exceeding the gear is:

[0129] Y=X×E

[0130] Wherein, X is the power or speed output at the current gear, E is the coefficient, and 1<E≤1.5.

[0131] It is worth noting that only one gear is described in each of the above steps, but in actual applications, more gears can be selectively set, and different gears in the same step have the same operating logic.

[0132] For example, in step S410, the fourth gear, the fifth gear, etc. can also be set. Taking the fourth gear as an example, its operating logic is: start the self-propelled switch. If the speed control switch is in the fourth gear, the drive unit drives the vehicle body to run in the second gear, and then the drive unit gradually increases to the fourth gear within the first preset time; the fifth gear, etc. can also operate with the same operating logic.

[0133] The second preset time is greater than the first preset time and less than the third preset time, so that different gears can be increased to corresponding power or speed in sequence from low to high.

[0134] In some embodiments, the difference between the second preset time and the first preset time is smaller than the first preset time, so that the trolley can reach the power or speed corresponding to the middle gear as quickly as possible.

[0135] In some embodiments, the difference between the third preset time and the first preset time is smaller than the first preset time, so that the trolley can reach the power or speed corresponding to the highest gear as quickly as possible.

[0136] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A startup control system, characterized in that: It includes a speed control system connected to a drive unit, the speed control system is set with a fixed value start domain and a variable value start domain, the speed control system includes a speed control switch, the speed control switch is suitable for indicating a first output value in the fixed value start domain, the speed control switch is suitable for indicating a second output value in the variable value start domain, when the speed control switch is adjusted to the fixed value start domain, the drive unit is suitable for driving the vehicle body to run with the first output value after starting, when the speed control switch is adjusted to the variable value start domain, the drive unit is suitable for driving the vehicle body to run with an initial output value lower than the second output value after starting, and gradually increasing the initial output value to the second output value.

2. A startup control system as claimed in claim 1, characterized in that: A load sensor is arranged on the vehicle body, and the load sensor is set with a first sensing weight. The load sensor is suitable for sensing the load weight of the vehicle body. When the load weight of the vehicle body exceeds the first sensing weight, the numerical upper limit of the fixed value starting domain is suitable for partially covering the numerical lower limit of the variable value starting domain.

3. A startup control system as claimed in claim 2, characterized in that: The load sensor is set with a second sensing weight, and the second sensing weight is greater than the first sensing weight. When the load of the vehicle body exceeds the second sensing weight, the driving unit is suitable for outputting a third output value. The driving unit is suitable for outputting the first output value or gradually increasing it to the third output value after outputting it to the first output value or gradually increasing it to the third output value after outputting it to the second output value.

4. A startup control system as claimed in claim 3, characterized in that: The calculation formula of the third output value Y is: Y=X×E Wherein, X is the first output value or the second output value, E is a coefficient, and 1<E≤1.

5.

5. A startup control system as claimed in claim 3, characterized in that: The driving unit is configured to increase the first output value or the second output value to the third output value in an accelerating state.

6. A startup control system as claimed in claim 3, characterized in that: The third output value is not greater than an upper limit of an output value of the driving unit.

7. A startup control system as claimed in claim 1, characterized in that: The driving unit is configured to start when the speed control switch is located in the variable value starting domain, and after driving the vehicle body to run with an initial output value lower than the second output value, increase the initial output value to the second output value in an accelerated state.

8. A startup control system as claimed in claim 1, characterized in that: The lower limit of the output value of the variable value start domain is configured to be equal to the upper limit of the output value of the fixed value start domain.

9. A startup control system as claimed in claim 1, characterized in that: The initial output value of the drive unit when started in the variable value start domain is configured to be equal to the upper limit value of the fixed value start domain.

10. A startup control system as claimed in claim 1, characterized in that: The first output value is greater than 0, the second output value is greater than the first output value, and the second output value is not greater than an upper limit of the output value of the driving unit.

11. A startup control system as claimed in claim 1, characterized in that: The speed regulating switch has a plurality of gears, at least one of which is located within the fixed value starting domain, and at least one of which is located within the variable value starting domain.

12. A startup control system as claimed in claim 11, characterized in that: The speed regulating switch is a stepless switch, and when the first output value or the second output value indicated by the stepless switch falls within a certain gear range, the output value set by the gear is used as the first output value or the second output value.

13. A startup control system as claimed in claim 11, characterized in that: The plurality of gears are distributed in equal proportion within an upper limit range of an output value of the drive unit.

14. A startup control system as claimed in claim 3, characterized in that: The first output value, the second output value, and the third output value are expressed in the form of output power of the drive unit or speed of the vehicle body.

15. A startup control system as claimed in claim 1, characterized in that: It also includes at least one self-propelled switch connected to the driving unit, and the self-propelled switch is suitable for controlling the start and stop of the driving unit.

16. A power-assisted trolley, comprising a trolley body and a driving unit, wherein the driving unit is used to drive the wheels of the trolley body to rotate, and wherein: The vehicle body is provided with a start control system as claimed in any one of claims 1 to 15.

17. A startup control method, characterized in that: Includes steps: S100, multiple power or speed gears are set, and the self-propelled switch is in the closed state in the initial state; S200, start the self-propelled switch. If the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear. S300, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run at the lowest gear, and then the driving unit gradually increases to the second gear within a first preset time; S400, starting the self-propelled switch, if the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run at the lowest gear, and then the driving unit gradually increases to the second gear within a first preset time, and the driving unit increases the second gear to the third gear within a second preset time; S500, start the self-propelled switch. If the speed control switch is at the highest gear, the drive unit drives the vehicle body to run at the lowest gear, and then the drive unit gradually increases to the second gear within the first preset time. The drive unit then gradually increases the second gear to the highest gear within the third preset time.

18. A startup control method as claimed in claim 17, characterized in that: Also includes the steps: S600, arranging a load sensor and setting a first sensing weight; If the load of the vehicle body does not exceed the first sensing weight, steps S200, S300, S400 and S500 are executed; If the vehicle load exceeds the first sensing weight, the following steps are performed: S210, starting the self-propelled switch, if the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear; S310, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run in the second gear; S410, starting the self-propelled switch, if the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run in the second gear, and then the driving unit gradually increases to the third gear within a first preset time; S510, start the self-propelled switch. If the speed control switch is in the highest gear, the drive unit drives the vehicle body to run in the second gear, and then the drive unit gradually increases to the third gear within the first preset time. The drive unit then gradually increases the third gear to the highest gear within the third preset time.

19. A startup control method as claimed in claim 18, characterized in that: Also includes the steps: S700, set the second sensing weight; If the load of the vehicle body exceeds the first sensing weight and does not exceed the second sensing weight, steps S210, S310, S410 and S510 are executed; If the vehicle load exceeds the second sensing weight, the following steps are performed: S220, starting the self-propelled switch, if the speed regulating switch is in the lowest gear, the driving unit drives the vehicle body to run at the lowest gear; S320, starting the self-propelled switch, if the speed regulating switch is in the second gear, the driving unit drives the vehicle body to run in the second gear, and then the driving unit gradually increases to exceed the second gear within a first preset time; S420, starting the self-propelled switch, if the speed regulating switch is in the third gear, the driving unit drives the vehicle body to run at the second gear, then the driving unit gradually increases to the third gear within a first preset time, and then the driving unit gradually increases to exceed the third gear within a second preset time; S520, start the self-propelled switch. If the speed control switch is in the highest gear, the drive unit drives the vehicle body to run in the second gear, and then the drive unit gradually increases to the third gear within the first preset time. The drive unit then gradually increases to a gear exceeding the highest gear within the third preset time.

20. A startup control method according to claim 19, characterized in that: The formula for calculating the power or speed Y obtained after exceeding the gear is: Y=X×E Wherein, X is the power or speed output at the current gear, E is the coefficient, and 1<E≤1.

5.

21. A startup control method according to claim 19, characterized in that: The difference between the third preset time and the first preset time is smaller than the first preset time.

22. A startup control method as claimed in claim 19, characterized in that: The second preset time is greater than the first preset time and less than the third preset time.

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