Energy accumulator with detection function and gearbox
By integrating displacement transfer components and displacement detection components in the accumulator, the problem of the accumulator in the prior art requires special hydraulic sensors, and the oil pressure detection and output are realized, reducing cost and space occupation.
Patent Information
- Application Number
- CN202411954911.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-28
AI Technical Summary
The accumulators in existing hybrid automatic transmissions require specialized hydraulic sensors, which leads to high costs and space-consuming.
Design an energy accumulator with detection function. By setting a displacement transfer component and a displacement detection component in the accumulator body, the detection and output of oil pressure is achieved, avoiding additional oil circuit design and special oil pressure sensors.
The function of detecting oil pressure is realized, reducing costs, reducing space, and adapting to various oil pressure ranges.
Smart Images
Figure CN119712627A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of accumulators, and in particular to an accumulator and a gearbox with a detection function. Background Art
[0002] An accumulator is a device that can store energy in a hydraulic system and release it when needed. In an automatic transmission, the main function of the accumulator is to store the pressure of the hydraulic oil in the hydraulic control system so that it can quickly respond to changes in the system pressure during gear shifting or other operations, thereby ensuring the smooth and reliable operation of the transmission. The accumulator can store a certain amount of high-pressure hydraulic oil and provide immediate pressure support when energy needs to be released quickly. Through the function of the accumulator, the impact of system pressure fluctuations on the transmission can be effectively reduced, and the working stability of the transmission can be improved. If the main hydraulic pump fails, the accumulator can provide the necessary pressure in a short time as a backup energy source in an emergency, ensuring that the transmission continues to work until the fault is eliminated or switched to the backup system.
[0003] The accumulator in the existing hybrid automatic transmission is used to store the oil pressure in the main oil circuit for the solenoid valve. The accumulator needs to be used with an oil pressure sensor (specific range) to store the oil pressure. However, the oil pressure sensor is expensive and requires a special oil circuit designed for it, which takes up space.
[0004] Therefore, it is necessary to design an accumulator with a detection function to solve the above problems. Summary of the invention
[0005] In view of this, in order to overcome the defects of the prior art, the present invention provides an accumulator and a gearbox with a detection function, which effectively solves the problem that the oil pressure sensor of the existing hybrid automatic transmission accumulator is high in cost and it is necessary to design an oil circuit in the accumulator specifically for the oil pressure sensor, which is costly and takes up space.
[0006] According to a first aspect of the present invention, an accumulator with a detection function is provided, wherein the accumulator with a detection function comprises an accumulator body and a detection mechanism, the detection mechanism comprises a displacement detection component and a displacement transmission component, the accumulator body comprises a shell and a piston arranged inside the shell, the displacement transmission component is arranged inside the shell, one end of the displacement transmission component is arranged at one end inside the shell, and the other end of the displacement transmission component is arranged on the piston, the displacement detection component is arranged outside the accumulator body, and the setting position of the displacement detection component corresponds to the setting position of the displacement transmission component.
[0007] Preferably, the interior of the shell is divided into an oil storage part and a displacement transmission part by the piston, and the shell is provided with an inlet port, and the hydraulic oil enters the oil storage part through the inlet port. When the hydraulic oil enters the oil storage part, the piston can change its position so that the space of the oil storage part and the space of the displacement transmission part are changed.
[0008] Preferably, the piston is provided with a first protrusion and a second protrusion at one end facing the displacement transmitting part, the first protrusion protrudes from the end surface of the piston toward the displacement transmitting part, and the second protrusion protrudes from the end surface of the first protrusion toward the displacement transmitting part.
[0009] Preferably, a third protrusion is provided inside the shell at one end close to the displacement transmission part, the displacement transmission assembly includes a magnetic part and an elastic part, the first end of the elastic part is provided on the second protrusion, and the second end of the elastic part is provided on the third protrusion; the magnetic part is sleeved on the first protrusion.
[0010] Preferably, the volume of the displacement transmission part is 5%-95% of the volume of the internal space of the housing.
[0011] Preferably, the displacement detection assembly comprises a position detection member and a mounting bracket, the mounting bracket is arranged at an end of the shell close to the displacement transmission assembly, and the position detection member is mounted on the shell through the mounting bracket.
[0012] Preferably, the mounting bracket is formed as an L-shaped structural member, the L-shaped structural member includes a first connecting end and a second connecting end connected to each other, the mounting bracket is connected to the gearbox via the first connecting end, and the position detection member is arranged at the second connecting end.
[0013] Preferably, the position detecting member comprises a detecting end and a transmitting end connected to each other, the detecting end is close to the housing, and the transmitting end is provided with a transmitting connecting port.
[0014] Preferably, a connecting portion is provided on the outer periphery of the housing.
[0015] According to a second aspect of the present invention, a gearbox is provided, wherein the gearbox comprises the accumulator with a detection function as described above.
[0016] According to the accumulator with detection function of the present invention, the oil pressure inside the shell can be detected through the cooperation of the accumulator body and the detection mechanism, and the oil pressure value at this time is output through the displacement detection component and the displacement transmission component to realize the detection function. Since the displacement transmission component is arranged inside the shell, there is no need to open an additional oil circuit, and it can adapt to various oil pressure ranges, while also reducing the occupied space; the displacement detection component is arranged outside the shell, and can receive the displacement indication transmitted by the displacement transmission component, so there is no need for a specific range of oil pressure sensors, which reduces costs.
[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A first cross-sectional view of an energy storage device with a detection function according to an embodiment of the present invention is shown;
[0020] Figure 2 A second sectional view shows an energy storage device with a detection function according to an embodiment of the present invention.
[0021] Figure markings: 1-housing; 101-inlet; 102-third protrusion; 103-oil storage portion; 104-displacement transmission portion; 105-connecting portion; 2-piston; 201-first protrusion; 202-second protrusion; 3-magnetic member; 4-elastic member; 5-mounting bracket; 501-first connecting end; 502-second connecting end; 6-position detection member; 601-detection end; 602-transmission end; 603-transmission connection port; 7-connecting screw. DETAILED DESCRIPTION
[0022] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.
[0023] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.
[0024] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.
[0025] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.
[0026] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.
[0027] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.
[0028] The terms used herein are only used to describe various examples and are not used to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprising" and "having" list the existence of the stated features, quantities, operations, components, elements and / or their combinations, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.
[0029] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.
[0030] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.
[0031] According to a first aspect of the present invention, there is provided an energy accumulator with a detection function, such as Figure 1 and Figure 2 As shown, the accumulator with a detection function is used for a hybrid automatic transmission, and the accumulator with a detection function comprises an accumulator body and a detection mechanism.
[0032] In the following description, reference will be made to Figure 1 and Figure 2 The detailed structure of the energy accumulator with detection function is described in detail.
[0033] like Figure 1 and Figure 2As shown, in an embodiment, the detection mechanism may include a displacement detection component and a displacement transmission component, and the displacement detection component may be used to detect the displacement indication transmitted by the displacement transmission component to detect the oil pressure value inside the accumulator body. The accumulator body may include a housing 1 and a piston 2 disposed inside the housing 1. The displacement transmission component is disposed inside the housing 1, one end of the displacement transmission component is disposed at one end inside the housing 1, and the other end of the displacement transmission component is disposed at the piston 2, and the displacement transmission component can change position together with the piston 2, thereby transmitting the displacement indication. The displacement detection component is disposed outside the accumulator body, and the setting position of the displacement detection component corresponds to the setting position of the displacement transmission component, so as to receive the displacement indication. Since the displacement transmission component is disposed inside the housing 1, it does not occupy additional space, and the displacement detection component can use any displacement detection member in the prior art, such as a displacement sensor, to avoid the need to use an oil pressure sensor with a specific range in the original structure, thereby reducing costs.
[0034] In this way, the accumulator with detection function can detect the oil pressure inside the housing 1 through the cooperation of the accumulator body and the detection mechanism, and output the oil pressure value at this time through the displacement detection component and the displacement transmission component to realize the detection function. Since the displacement transmission component is arranged inside the housing 1, there is no need to open an additional oil circuit, and the occupied space is also reduced; the displacement detection component is arranged outside the housing 1, and can receive the displacement indication transmitted by the displacement transmission component, so there is no need for a specific range of oil pressure sensors, which reduces costs.
[0035] Preferably, if Figure 1 and Figure 2 As shown, in the embodiment, the interior of the housing 1 is divided into an oil storage part 103 and a displacement transmission part 104 by the piston 2, and the housing 1 is provided with an inlet 101, and the hydraulic oil enters the oil storage part 103 through the inlet 101. When the hydraulic oil enters the oil storage part 103, the piston 2 can change its position so that the space of the oil storage part 103 and the space of the displacement transmission part 104 are changed. The hydraulic oil enters the oil storage part 103 from the inlet 101, and the hydraulic oil abuts and pushes the piston 2, so that the piston 2 changes its position. Since the oil storage part 103 and the displacement transmission part 104 are divided by the piston 2, as the position of the piston 2 changes, the volumes of the oil storage part 103 and the displacement transmission part 104 also change accordingly. Since the displacement transmission component is arranged on the piston 2, the formation of the piston 2 can be converted into a displacement indication, so that the displacement detection component receives the displacement indication, and then the space occupied by the displacement transmission part 104 compared to the total internal volume of the shell 1 at this time is obtained, that is, the duty cycle. The user (or controller) can calculate the oil pressure value at this time according to the duty cycle.
[0036] Preferably, if Figure 1and Figure 2 As shown, in the embodiment, the end of the piston 2 facing the displacement transmission part 104 is provided with a first protrusion 201 and a second protrusion 202, the first protrusion 201 protrudes from the end surface of the piston 2 toward the displacement transmission part 104, and the second protrusion 202 protrudes from the end surface of the first protrusion 201 toward the displacement transmission part 104. It can be understood that the diameter of the second protrusion 202 is smaller than the diameter of the first protrusion 201, and the diameter of the first protrusion 201 is smaller than the diameter of the piston 2. In this way, the first protrusion 201 can be used to install the magnetic member 3 described below, and the second protrusion 202 can be used to install the elastic member 4 described below.
[0037] Preferably, if Figure 1 and Figure 2 As shown, in the embodiment, a third protrusion 102 is provided at one end of the housing 1 near the displacement transmission part 104, and the displacement transmission assembly may include a magnetic member 3 and an elastic member 4, wherein the first end of the elastic member 4 is provided at the second protrusion 202, and the second end of the elastic member 4 is provided at the third protrusion 102; the magnetic member 3 is sleeved on the first protrusion 201. The elastic member 4 can be used for resetting the piston 2, and the displacement detection assembly detects the position of the magnetic member 3 to realize the transmission of the displacement indication. The magnetic member 3 and the elastic member 4 can be installed by welding or bonding.
[0038] Preferably, if Figure 1 and Figure 2 As shown, in the embodiment, the volume of the displacement transmission part 104 is 5%-95% of the volume of the internal space of the housing 1. It is understandable that the duty cycle of the accumulator with detection function is 5%-95%. That is, the minimum volume of the displacement transmission part 104 is 5% of the volume of the housing 1, and the maximum volume of the displacement transmission part 104 is 95% of the volume of the housing 1. In this way, the relationship between the duty cycle and the oil pressure can be set in advance, and then the value of the oil pressure at this time can be obtained according to the current duty cycle. The value of the oil pressure at this time can be obtained by using a central controller or manually calculated.
[0039] Preferably, if Figure 1 and Figure 2 As shown, in an embodiment, the displacement detection assembly may include a position detection member 6 and a mounting bracket 5 , wherein the mounting bracket 5 is disposed at an end of the housing 1 close to the displacement transmission assembly, and the position detection member 6 is mounted on the housing 1 via the mounting bracket 5 .
[0040] Preferably, if Figure 1 and Figure 2As shown, in the embodiment, the mounting bracket 5 is formed as an L-shaped structural member, and the L-shaped structural member includes a first connecting end 501 and a second connecting end 502 connected to each other. The mounting bracket 5 is connected to the gearbox (not shown) through the first connecting end 501, and the position detecting member 6 is arranged at the second connecting end 502. The first connecting end 501 of the mounting bracket 5 can be mounted on the gearbox by connecting screws 7. The position detecting member 6 can be mounted on the second connecting end 502 of the mounting bracket 5 by welding or bonding. In addition, the mouth of the L-shaped structural member faces the housing 1 to further reduce the occupied space.
[0041] Preferably, if Figure 1 and Figure 2 As shown, in the embodiment, the position detection member 6 includes a detection end 601 and a transmission end 602 connected to each other, the detection end 601 is close to the housing 1, and the transmission end 602 is provided with a transmission connection port 603. The detection end 601 can be used to detect the displacement of the magnetic member 3, the transmission end 602 can be used to transmit the received displacement signal, and the transmission connection port 603 can be electrically connected to an external receiver to realize signal transmission.
[0042] Preferably, if Figure 1 and Figure 2 As shown, in the embodiment, a connection portion 105 is provided on the outer periphery of the housing 1. The connection portion 105 may include an external thread and a stopper, and the housing 1 may be connected to the installation position specified by the gearbox through the external thread, and the stopper is used to limit the connection.
[0043] The use process of the accumulator with detection function is as follows: first, the electronic oil pump (not shown) works, and the oil of the gearbox enters the interior of the housing 1 of the accumulator through the inlet 101, that is, enters the oil storage part 103, and the oil pushes the piston 2 to move to the right, where the accumulator stores energy. After that, the electronic oil pump stops working, the accumulator releases the stored energy, and the piston 2 moves to the left, at which time the accumulator works. In the energy storage and working state, the magnetic part 3 on the piston 2 will move with the piston 2. The position detection part 6 can detect the position change of the magnetic part 3, and then convert the stroke of the magnetic part 3 into a duty cycle, and the duty cycle range is 5%-95%. Before the accumulator is used, the initial position can be determined, such as a duty cycle of 20%. The relationship between the duty cycle and the oil pressure can be obtained through calibration. For example, the duty cycle of the sensor output corresponding to 15bar oil pressure is 30%, the duty cycle of the sensor output corresponding to 30bar oil pressure is 50%, the duty cycle of the sensor output corresponding to 45bar oil pressure is 70%, and the duty cycle of the sensor output corresponding to 60bar oil pressure is 90%. The corresponding relationship is written into the software table, and the software obtains the actual oil pressure value corresponding to different duty cycles by looking up the table. The position detection component 6 can adopt a single Hall or dual Hall structure. The position detection component 6 is hard-wired to the TCU (transmission control unit), and the displacement duty cycle signal is sent to the TCU, and the TCU supplies power to the displacement sensor.
[0044] The accumulator with detection function can detect the oil pressure inside the shell through the cooperation of the accumulator body and the detection mechanism, and output the oil pressure value at this time through the displacement detection component and the displacement transmission component to realize the detection function. Since the displacement transmission component is arranged inside the shell, there is no need to open an additional oil circuit, and it can adapt to various oil pressure ranges, while also reducing the occupied space; the displacement detection component is arranged outside the shell, and can receive the displacement indication transmitted by the displacement transmission component, so there is no need for a specific range of oil pressure sensors, which reduces costs.
[0045] In addition, according to a second aspect of the present invention, a gearbox is provided, the gearbox comprising the above-mentioned accumulator with detection function. During use, the gearbox can effectively reduce manufacturing costs and occupy less space by installing the above-mentioned accumulator.
[0046] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims
1. An accumulator with a detection function, characterized in that: The accumulator with detection function includes an accumulator body and a detection mechanism, the detection mechanism includes a displacement detection component and a displacement transmission component, the accumulator body includes a shell and a piston arranged inside the shell, the displacement transmission component is arranged inside the shell, one end of the displacement transmission component is arranged at one end inside the shell, and the other end of the displacement transmission component is arranged on the piston, the displacement detection component is arranged outside the accumulator body, and the setting position of the displacement detection component corresponds to the setting position of the displacement transmission component.
2. The energy accumulator with detection function according to claim 1, characterized in that: The interior of the shell is divided into an oil storage part and a displacement transmission part by the piston. The shell is provided with an inlet, and the hydraulic oil enters the oil storage part through the inlet. When the hydraulic oil enters the oil storage part, the piston can change its position so that the space of the oil storage part and the space of the displacement transmission part are changed.
3. The energy accumulator with detection function according to claim 2, characterized in that: The piston is provided with a first protrusion and a second protrusion at one end facing the displacement transmitting part. The first protrusion protrudes from the end surface of the piston toward the displacement transmitting part, and the second protrusion protrudes from the end surface of the first protrusion toward the displacement transmitting part.
4. The energy accumulator with detection function according to claim 3, characterized in that: A third protrusion is arranged at one end of the shell body near the displacement transmission part, and the displacement transmission assembly includes a magnetic part and an elastic part, the first end of the elastic part is arranged on the second protrusion, and the second end of the elastic part is arranged on the third protrusion; the magnetic part is sleeved on the first protrusion.
5. The energy accumulator with detection function according to claim 2, characterized in that: The volume of the displacement transmission part is 5%-95% of the volume of the internal space of the shell.
6. The energy accumulator with detection function according to claim 1, characterized in that: The displacement detection assembly includes a position detection member and a mounting bracket. The mounting bracket is arranged at an end of the shell close to the displacement transmission assembly, and the position detection member is mounted on the shell through the mounting bracket.
7. The energy accumulator with detection function according to claim 6, characterized in that: The mounting bracket is formed as an L-shaped structural member, and the L-shaped structural member includes a first connecting end and a second connecting end connected to each other. The mounting bracket is connected to the gearbox through the first connecting end, and the position detection member is arranged at the second connecting end.
8. The energy accumulator with detection function according to claim 6, characterized in that: The position detection member comprises a detection end and a transmission end connected to each other, the detection end is close to the housing, and the transmission end is provided with a transmission connection port.
9. The energy accumulator with detection function according to claim 1, characterized in that: A connecting portion is arranged on the outer periphery of the housing.
10. A gearbox, characterized in that: The gearbox comprises the energy accumulator with detection function according to any one of claims 1 to 9.