Oil cooling electronic oil pump integrated with oil temperature sensor

Abstract

The utility model relates to an oil cooling electronic oil pump integrated with an oil temperature sensor. The oil cooling electronic oil pump comprises a shell, a PCBA, a driving part, an inner and outer rotor assembly and the oil temperature sensor, wherein the PCBA and the driving part are sequentially arranged in the shell; the inner and outer rotor assembly is connected with an output shaft of the driving part; the inner and outer rotor assembly is used for changing the air pressure in the shell during working rotation so as to suck and discharge oil liquid, and the sucked oil liquid is used for cooling the driving part and the PCBA; and the PCBA is used for controlling the operation state of the driving part according to an oil temperature signal detected by the oil temperature sensor. The brushless direct current motor drives the inner rotor assembly and the outer rotor assembly to rotate so that air pressure in the shell can be changed to suck and discharge oil liquid, the oil temperature sensor arranged on the controller shell can detect the temperature of the oil liquid sucked into the pump body shell through the liquid inlet in real time, and compared with the mode that the oil temperature is read through a transmission, errors can be reduced, and working efficiency is improved. Therefore, operating efficiency of the oil pump is improved, loss is reduced, and service life of the oil pump is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic oil pumps, and in particular relates to an oil-cooled electronic oil pump integrated with an oil temperature sensor. Background Art

[0002] Electronic oil pumps require different operating strategies for different oil temperatures. If the integrated module misjudges the actual oil temperature, it may cause the oil pump operating strategy to be incorrect, which will affect the operating efficiency of the oil pump and may cause the oil pump to generate more losses during normal operation, reducing the service life of the oil pump.

[0003] In the prior art, the electronic oil pump cannot directly measure the oil temperature at the oil pump suction port. It is necessary to collect the oil temperature through the transmission and send an operating instruction to the oil pump to control the operation of the oil pump. However, there is a large error between the oil temperature collected by the transmission and the actual oil temperature at the oil pump suction port. When there is a large error, it will lead to technical problems such as low efficiency in controlling the operation of the oil pump. Utility Model Content

[0004] The purpose of the utility model is to provide an oil-cooled electronic oil pump with an integrated oil temperature sensor in order to solve the above-mentioned problem, aiming to solve the technical problem in the prior art that the electronic oil pump does not have an integrated oil temperature sensor, and the temperature of the oil pump suction port is collected through the transmission, but there is a large error between the oil temperature collected by the transmission and the actual oil temperature of the oil pump suction port. In the case of a large error, it will lead to low efficiency in controlling the operation of the oil pump.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] An oil-cooled electronic oil pump integrated with an oil temperature sensor comprises a housing, a PCBA sequentially arranged inside the housing, a driving member, an inner and outer rotor assembly connected to an output shaft of the driving member, and an oil temperature sensor arranged inside the housing;

[0007] The inner and outer rotor components are used to change the air pressure inside the housing during operation and rotation to inhale and discharge oil;

[0008] The PCBA is used to control the operating state of the driving component according to the temperature signal of the oil inside the housing detected by the oil temperature sensor.

[0009] As a further optimization solution of the utility model, the housing includes a pump cover, a pump body shell, and a controller cover which are connected in sequence;

[0010] The shell also includes a liquid inlet opened on the pump cover and a liquid discharge port opened on the pump body shell.

[0011] As a further optimization solution of the utility model, a controller housing is provided between the driving member and the PCBA, and a sealing ring gasket for sealing a gap between the pump housing and the controller housing is provided between the pump housing and the controller housing.

[0012] As a further optimization solution of the utility model, the oil temperature sensor is arranged on a side of the controller housing close to the liquid inlet, and the oil temperature sensor is connected to the PCBA through a fisheye terminal;

[0013] The fisheye terminal penetrates the controller housing and a sealing layer is provided between the fisheye terminal and the controller housing.

[0014] As a further optimization solution of the utility model, the inner and outer rotor assembly includes a pump inner rotor and a pump outer rotor that cooperate with each other.

[0015] As a further optimization solution of the utility model, the driving component is a motor, and the motor includes a motor rotor and a motor stator. The motor rotor and the pump inner rotor are respectively fixed on the outer wall of the output shaft.

[0016] As a further optimization scheme of the utility model, an oil channel for oil transportation is reserved inside the output shaft, and part of the oil sucked through the oil inlet is transported through the oil channel of the output shaft and sprayed toward the controller housing.

[0017] The beneficial effects of the utility model are:

[0018] 1) The utility model drives the inner and outer rotor components to rotate through a brushless DC motor to change the air pressure inside the housing to inhale and discharge oil. The oil temperature sensor provided on the controller housing can detect the temperature of the oil inhaled into the pump housing through the liquid inlet in real time. Compared with the traditional method of reading the oil temperature through the transmission, the error can be reduced, thereby improving the operating efficiency of the oil pump, reducing losses, and extending the working life of the oil pump;

[0019] 2) The oil sucked in through the liquid inlet of the utility model can be used to cool the brushless DC motor and PCBA. The controller housing is used to protect the PCBA to prevent the oil from contacting the PCBA. The utility model has a simple structure, is easy to produce and process, and has a good cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a cross-sectional view of the overall structure of the utility model.

[0022] Figure 3 It is a partial structural schematic diagram of the utility model.

[0023] Figure 4It is a stereoscopic diagram of the oil temperature sensor and the controller housing of the utility model.

[0024] In the figure: 1. Shell; 101. Pump body shell; 102. Controller cover; 103. Pump cover; 104. Controller shell; 2. Liquid inlet; 3. Liquid outlet; 4. PCBA; 51. Motor stator; 52. Motor rotor; 53. Output shaft; 61. Pump inner rotor; 62. Pump outer rotor; 7. Oil temperature sensor. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] like Figure 1-4 As shown, an oil-cooled electronic oil pump integrated with an oil temperature sensor comprises a housing 1, a PCBA 4 sequentially arranged inside the housing 1, a driving member, an inner and outer rotor assembly connected to an output shaft 53 of the driving member, and an oil temperature sensor 7 arranged inside the housing 1;

[0027] The inner and outer rotor components are used to change the air pressure inside the housing 1 during operation and rotation to inhale and discharge oil;

[0028] The PCBA 4 is used to control the operating state of the driving component according to the temperature signal of the oil inside the housing 1 detected by the oil temperature sensor 7.

[0029] It should be noted that, in this embodiment, PCBA4 is a printed circuit board, that is, a controller.

[0030] Preferably, the housing 1 comprises a pump cover 103, a pump housing 101, and a controller cover 102 which are connected in sequence;

[0031] The housing 1 further includes a liquid inlet 2 formed on the pump cover 103 and a liquid outlet 3 formed on the pump housing 101 .

[0032] Preferably, a controller housing 104 is provided between the driving member and the PCBA 4 , and a sealing ring gasket for sealing a gap between the pump housing 101 and the controller housing 104 is provided between the pump housing 101 and the controller housing 104 .

[0033] Preferably, the oil temperature sensor 7 is arranged on a side of the controller housing 104 close to the liquid inlet 2, and the oil temperature sensor 7 is connected to the PCBA 4 through a fisheye terminal;

[0034] The fisheye terminal passes through the controller housing 104 and a sealing layer is provided between the fisheye terminal and the controller housing 104 .

[0035] When in use, the oil temperature sensor 7 can detect in real time the temperature of the oil sucked into the pump housing 101 through the liquid inlet 2. Compared with the traditional method of reading the oil temperature through the transmission, it can reduce errors, thereby improving the operating efficiency of the oil pump, reducing losses, and extending the service life of the oil pump.

[0036] It should be noted that, in this embodiment, the fisheye terminal and the oil temperature sensor 7 are welded and fixed to each other, and the fisheye terminal penetrates the controller housing 104 and is interference-fitted with the PCBA 4, so that the fisheye terminal, the oil temperature sensor 7 and the PCBA 4 are stably connected together;

[0037] The sealing layer is a film layer formed after the sealant dries.

[0038] In this embodiment, the inner and outer rotor assembly includes a pump inner rotor 61 and a pump outer rotor 62 that cooperate with each other.

[0039] It should be noted that the coordination and installation between the pump inner rotor 61 and the pump outer rotor 62 is a conventional technique and will not be described in detail here.

[0040] In this embodiment, the driving member is a motor, which may be a brushless DC motor. The brushless DC motor includes a motor rotor 52 and a motor stator 51 . The motor rotor 52 and the pump inner rotor 61 are fixed on the outer wall of the output shaft 53 , respectively.

[0041] It should be noted that the brushless DC motor composed of the motor rotor 52 and the motor stator 51 is a conventional technology and will not be described in detail here.

[0042] Preferably, an oil channel for oil transportation is reserved inside the output shaft 53, and part of the oil sucked in through the liquid inlet 2 is transported through the oil channel of the output shaft 53 and sprayed toward the controller housing 104;

[0043] During the oil transportation through the oil channel of the output shaft 53 , the motor rotor 52 can be cooled from the inside of the motor rotor 52 , and the oil sprayed toward the controller housing 104 can be used to cool the controller housing 104 and the PCBA 4 .

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An oil-cooled electronic oil pump integrated with an oil temperature sensor, characterized in that: It comprises a housing (1), a PCBA (4) arranged in sequence inside the housing (1), a driving member and an inner and outer rotor assembly connected to an output shaft (53) of the driving member, and an oil temperature sensor (7) arranged inside the housing (1); The inner and outer rotor components are used to change the air pressure inside the housing (1) during operation and rotation so as to inhale and discharge oil; The PCBA (4) is used to control the operating state of the driving component according to a temperature signal of the oil inside the housing (1) detected by the oil temperature sensor (7).

2. The oil-cooled electronic oil pump integrated with an oil temperature sensor according to claim 1, characterized in that: The housing (1) comprises a pump cover (103), a pump housing (101), and a controller cover (102) which are connected in sequence; The housing (1) further comprises a liquid inlet (2) provided on the pump cover (103) and a liquid outlet (3) provided on the pump housing (101).

3. The oil-cooled electronic oil pump integrated with an oil temperature sensor according to claim 2, characterized in that: A controller housing (104) is provided between the driving member and the PCBA (4), and a sealing ring gasket for sealing a gap between the pump housing (101) and the controller housing (104) is provided between the pump housing (101) and the controller housing (104).

4. The oil-cooled electronic oil pump integrated with an oil temperature sensor according to claim 3, characterized in that: The oil temperature sensor (7) is arranged on a side of the controller housing (104) close to the liquid inlet (2), and the oil temperature sensor (7) is connected to the PCBA (4) via a fisheye terminal; The fisheye terminal passes through the controller housing (104), and a sealing layer is provided between the fisheye terminal and the controller housing (104).

5. The oil-cooled electronic oil pump integrated with an oil temperature sensor according to claim 1, characterized in that: The inner and outer rotor assembly comprises an inner pump rotor (61) and an outer pump rotor (62) which cooperate with each other.

6. The oil-cooled electronic oil pump integrated with an oil temperature sensor according to claim 5, characterized in that: The driving component is a motor, which comprises a motor rotor (52) and a motor stator (51). The motor rotor (52) and the pump inner rotor (61) are respectively fixed on the outer wall of the output shaft (53).

7. The oil-cooled electronic oil pump integrated with an oil temperature sensor according to claim 2, characterized in that: An oil channel for oil transportation is reserved inside the output shaft (53), and part of the oil sucked in through the liquid inlet (2) is transported through the oil channel of the output shaft (53) and sprayed toward the controller housing (104).

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