CN212908367U - Charging terminal and liquid cooling charging device - Google Patents

Abstract

The utility model relates to an automobile charging technical field, concretely relates to charging terminal, including crimping piece and connector, the first end of crimping piece is crimping portion, the second end of crimping piece and the first end of connector are for dismantling the connection, the second end of connector is inwards sunken to have connects the inserting groove, it indicates to dispose elasticity in the inserting groove, be close to on the outer wall of connector elasticity touches and indicates to be equipped with temperature sensor. The utility model provides a pair of charging terminal can real-time supervision connect the temperature of portion of inserting, prevents to connect the portion of inserting to be burnt out, even if take place to burn out, and the maintenance is also very convenient, and cost of maintenance is also very low.

Description

Charging terminal and liquid cooling charging device

Technical Field

The utility model relates to an automobile charging technology field, concretely relates to charging terminal and liquid cooling charging device.

Background

At present fill electric pile generally through the rifle that charges for electric automobile, the contact pin terminal in the rifle that charges plays electric current and signal transmission's effect, contact pin terminal among the prior art all adopts the integrated design, connect crimping part and connect the integration of inserting on same part, then crimping part and cable equipment, when charging, the contact pin terminal temperature of the rifle that charges is very high, in case the contact pin terminal is ablated or damaged, on-the-spot unable maintenance, can only change whole rifle and cable that charges, after-sale cost of maintenance is high, and cause very big waste.

In order to solve the above problem, patent application No. CN201921160448.4 discloses a separable charging gun pin terminal, as shown in fig. 1, a stud 11 ' is provided at the head of a crimping portion 1 ', a threaded hole 21 ' is provided at the tail of a socket portion 2 ', and the stud 11 ' and the threaded hole 21 ' are matched to realize detachable connection, so that only the socket portion 2 ' needs to be replaced during maintenance, but the following problems still exist in the solution:

(1) gaps generally exist between the plugging part and the socket hole butted with the plugging part, so that the plugging part can be smoothly inserted into the socket hole, and when the plugging part and the socket are plugged, the outer wall of the plugging part cannot be completely attached to the inner wall of the socket hole and is only partially contacted or even point contacted, so that the contact area is reduced, the resistance is increased, and accidents such as burning-out at high temperature are easily caused;

(2) frequent plugging of the plugging part and the socket can cause damage to the surface coating of the plugging part, the resistance is increased, the damage frequency of the plugging part is high, the plugging part still needs to be frequently replaced, and the maintenance cost is still high;

(3) when charging, especially high-power charging, the temperature of the plug-in part cannot be monitored accurately in real time, so that the temperature of the plug-in part is not controlled and burning is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve separable charging terminal among the prior art and still have the technical problem that cost of maintenance is high and easily burn out, provided a charging terminal, but the temperature of real-time supervision portion of inserting, easy maintenance simultaneously, cost of maintenance is lower.

The technical scheme of the utility model:

a charging terminal, comprising:

the first end of the crimping piece is a crimping part, and the second end of the crimping piece is detachably connected with a connector;

the connector, the first end of connector with the second end connection of crimping piece, the second end of connector is inside sunken to have connects the inserting groove, connect and dispose elasticity in the inserting groove and touch the finger, be close to on the outer wall of connector elasticity touches the finger and is equipped with temperature sensor.

The utility model has the advantages that the press-connection piece and the connector are detachably connected, so that the maintenance is more convenient; secondly, the elastic contact fingers are arranged in the connector, when the charging terminal is burnt out due to overheating, the elastic contact fingers are contacted with the power receiving socket, the elastic contact fingers are firstly burnt out, only the elastic contact fingers need to be replaced at the moment, the connector does not need to be replaced frequently, obviously, the cost of the elastic contact fingers is far lower than that of the connector, and the maintenance and the replacement are more convenient and rapid; moreover, the elastic contact fingers enable the connector to be better contacted with a power receiving socket or a contact pin, the contact effect is good, overheating is not easy to occur, and only the elastic contact fingers can be damaged by frequent plugging and unplugging, so that the connector cannot be damaged; in addition, because the temperature that the elastic contact indicates the department is the highest, the utility model discloses the region that indicates is being close to the elastic contact is provided with temperature sensor, detects the temperature of hottest department in real time and accurately to accessible controller control charging circuit turns off or reduces charging current, thereby avoids the charging terminal to be burnt out.

Further, the second end of crimping piece is equipped with the arch, the first end of connector be equipped with protruding complex recess makes crimping piece and connector align more easily through the cooperation of arch and recess, and is difficult for taking place radial dislocation.

Further, the second end of crimping piece is equipped with the screw hole, a round hole has been seted up to the bottom surface that connects the slot, the connector with the help of the screw with the crimping piece is connected, the head of screw is disposed connect in the slot, the middle part of screw is passed the round hole with the screw hole cooperation is screwed, adopts the screw fastening and with the screw configuration connect the inslot portion, can prevent that crimping piece and connector from rotating each other and leading to both to connect inseparably.

Furthermore, the elastic contact finger is a spring contact finger, and large current can be transmitted in a small space through multipoint contact.

Further, the outer wall of connector is formed with the installation temperature sensor's mounting groove, the outer wall of connector still overlaps and is equipped with fixedly temperature sensor's fixed cover fixes temperature sensor at the outer wall of connector through fixed cover for temperature sensor can monitor the temperature peak all the time and the elastic contact indicates the region promptly.

Further, the temperature sensor is connected with a base body through a lead wire, the base body is in a connector type, the base body is fixed between the compression joint piece and the connector, and the connector type base body is convenient to insert and replace.

The utility model discloses an on the other hand provides a liquid cooling charging device, including above arbitrary one the charging terminal, still include:

the cavity, the one end sealing connection of cavity has the liquid cooling cable, the other one end sealing connection of cavity the crimping piece, still be equipped with on the cavity and hold the intercommunication mouth that the coolant liquid went out, it has the coolant liquid to flow in the cavity, can be to the cooling of charging terminal, especially when temperature sensor detected the high temperature, the velocity of flow of the steerable coolant liquid of controller for the temperature of connector further descends.

Furthermore, the liquid cooling cable is provided with a connecting sleeve, the connecting sleeve is clamped at one end of the cavity by means of a locking piece, and the connecting sleeve is sealed by a sealing ring sleeved on the connecting sleeve.

Further, the inside chucking of crimping spare has the pin, be equipped with on the cavity with pin tip complex spacing groove stops the pin radial movement can prevent that charging terminal from taking place to rotate at the plug in-process.

Further, the crimping piece is provided with a plurality of radiating fins, so that the radiating area of the crimping piece can be increased, and the cooling effect on the charging terminal is better.

After the technical scheme is adopted, compared with the prior art, the utility model, but the temperature of the hot spot of real-time supervision connector prevents that the connector from being burnt out, even if after the connector is burnt out, also only need to change elasticity under the most circumstances and touch and indicate, has reduced the change of connector, makes things convenient for the field maintenance, and cost of maintenance is lower.

Drawings

Fig. 1 is a schematic structural view of a pin terminal disclosed in patent "CN 201921160448.4";

fig. 2 is a sectional view of a charging terminal according to the first embodiment;

FIG. 3 is a schematic view of a connector according to a first embodiment;

FIG. 4 is a schematic structural view of a crimping member according to the first and second embodiments;

FIG. 5 is an exploded view of the connector portion of the first embodiment;

fig. 6 is a schematic view of the overall structure of a liquid-cooled charging apparatus according to a second embodiment;

fig. 7 is a sectional view of a liquid-cooled charging apparatus according to a second embodiment;

fig. 8 is an exploded schematic view of a liquid-cooled charging apparatus according to a second embodiment;

fig. 9 is a threading schematic view of a threading part according to the second embodiment.

Wherein,

the crimping portion 1 ', the stud 11', the inserting portion 2 ', the threaded hole 21';

the crimping piece 1, the crimping part 11, the charging cable 111, the threaded hole 12, the protrusion 13, the notch 14, the fitting hole 15, the sealing piece 16 and the heat dissipation fin 17;

the connector 2, a connecting slot 21, an elastic contact finger 22, a temperature sensor 23, a leading-out wire 231, a seat body 232, a round hole 24, a groove 25, a screw 26, a lip-shaped gasket 27, a mounting groove 28 and a fixing sleeve 29;

the liquid cooling cable comprises a cavity 3, a liquid cooling cable 31, a connecting sleeve 311, a sealing ring 312, a locking part 32, a communication port 33, a communication pipe 34, a pin 35, a limiting groove 36, a threading part 37 and a sealing plug 38.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The first embodiment is as follows:

as shown in fig. 2, the charging terminal of the present embodiment includes a crimp member 1 and a socket member 2, a first end of the crimp member 1 is a crimp portion 11, and the crimp portion 11 is formed as a crimp hole for crimping a charging cable 111; the crimping piece 1 and the connector 2 are detachably connected through a screw 26, specifically, as shown in fig. 2-3, a threaded hole 12 is formed in a second end of the crimping piece 1, a round hole 24 is formed in a first end of the connector 2, the diameter of the round hole 24 is larger than the major diameter of the threaded hole 12 and smaller than the outer diameter of the head of the screw 26, meanwhile, a receiving slot 21 is formed in the second end of the connector 2 in an inwards recessed mode, the bottom of the receiving slot 21 is communicated with the round hole 24, the head of the screw 26 is arranged in the receiving slot 21, and the middle and the tail of the screw 26 penetrate through the round hole 24 to be matched and screwed with the threaded hole 12, so that the crimping piece 1. The present embodiment employs the screw 26 for fastening and disposing the screw 26 inside the connector 2, thereby achieving both the detachable connection of the crimp member 1 and the connector 2 and preventing the relative rotation of the crimp member 1 and the connector 2 from loosening.

Preferably, as shown in fig. 2-4, the second end of the crimp member 1 is provided with a protrusion 13, the first end of the connector 2 is provided with a recess 25 for engaging the protrusion 13, and the engagement of the protrusion 13 and the recess 25 facilitates alignment of the crimp member 1 and the connector 2 during installation and prevents radial misalignment after installation.

Preferably, the screw 26 of the present embodiment is a special-shaped screw, the head of which is different from the common cross-shaped or quincunx-shaped screw, and the screw can be detached only by a special tool, so as to prevent misoperation and artificial damage.

Preferably, as shown in fig. 3, a lip-shaped gasket 27 is further disposed between the screw 26 and the bottom of the socket groove 21, the lip-shaped gasket 27 is a sealing gasket with a self-sealing function, and compared with a common gasket, the sealing effect is better, and liquid or dust can be prevented from entering from the socket groove 21, and meanwhile, the lip-shaped gasket 27 has a certain elasticity, so that the screw 26 is continuously locked.

Further, as shown in fig. 2-3, the elastic contact finger 22 is disposed in the insertion slot 21 for electrically connecting with a pin on the power receiving socket, specifically, the inner wall of the insertion slot 21 is provided with an accommodating groove for accommodating the elastic contact finger 22, and the elastic contact finger 22 partially protrudes out of the inner wall of the insertion slot 21, so that after the insertion slot 21 is inserted into the pin, the elastic contact finger 22 can ensure good contact between the insertion slot 21 and the pin, and meanwhile, when the insertion slot is inserted, the insertion piece 2 plays a role of buffering and guiding to some extent, so that the insertion piece 2 is vertically inserted into the power receiving socket, thereby preventing damage to the pin or a plating layer of the insertion slot 21 caused by direct insertion.

Further, as shown in fig. 2 and 5, a temperature sensor 23 is provided on the outer wall of the connector 2 near the elastic contact finger 22, specifically, a mounting groove 28 for mounting the temperature sensor 23 and the lead wire 231 of the temperature sensor is formed on the outer wall of the connector 2, the temperature sensor 23 can be inserted from the first end of the connector 2 and then pressed in the mounting groove 28, meanwhile, a fixing sleeve 29 for fixing the temperature sensor 23 is further sleeved on the outer wall of the connector 2, the temperature sensor 23 is fixed in the mounting groove 28 by the fixing sleeve 29 to prevent movement, so that the temperature sensor 23 can always monitor the highest temperature point, i.e., the area near the elastic contact finger 22, and preferably, the charging terminal of the present embodiment is adapted to the DC + and DC-electrodes of the charging main circuit in the charging gun.

Further, as shown in fig. 2 and 4, the temperature sensor 23 is connected to a seat body 232 through an outgoing line 231, the seat body 232 is fixed between the compression joint member 1 and the connector 2, specifically, the second end of the compression joint member 1 is provided with a notch 14 adapted to the shape of the seat body 232, when the compression joint member 1 and the connector 2 are connected, the connector 2 presses the seat body 232 in the notch 14, and the seat body 232 is prevented from shaking; meanwhile, the seat body 232 is of a connector type, which is convenient to use and replace, specifically, the seat body 232 of the embodiment is formed as a female connector, and the controller is inserted and connected with the female connector through a male connector with a wire to transmit an electric signal.

Further, the elastic contact finger 22 of this embodiment can select but not limited to the spring contact finger, the spring contact finger electric conductivity is good, can guarantee the multiple spot contact, thereby guarantee great current-carrying capacity, and almost for lossless contact, the spring contact finger has fine wearability simultaneously, when the contact with the contact pin of receiving the socket, can guarantee fully to contact, can play the effect of indirect protection to the 21 inner walls of butt joint slot, when overheated burnout, generally only can burn out the spring contact finger, only need change the spring contact finger can, can practice thrift certain cost.

Further, the number of the spring contact fingers is two or more, so that the contact area can be further increased, and the current-carrying capacity is increased.

From the above, the press-connection piece 1 and the connector 2 of the present invention are detachably connected, so that the maintenance is more convenient; secondly, the spring contact fingers are arranged in the connector 2, when the charging terminal is burnt out due to overheating, the spring contact fingers are contacted with the power receiving socket, the spring contact fingers are firstly burnt out, at the moment, only the spring contact fingers need to be replaced, the connector 2 does not need to be replaced frequently, obviously, the cost of the spring contact fingers is far lower than that of the connector 2, and the maintenance and replacement are more convenient and quicker; moreover, the spring contact fingers enable the connector 2 to be better contacted with the contact pins of the power receiving socket, the contact effect is good, overheating is not easy to occur, and only the spring contact fingers can be damaged by frequent plugging and unplugging, so that the connector 2 cannot be damaged; in addition, because the temperature that the spring touched and indicates the department is the highest, the utility model discloses the region that touches and indicates being close to the spring is provided with temperature sensor 23, detects the temperature of hottest department in real time and accurately to accessible controller control charging circuit turns off or reduces charging current, thereby avoids the charging terminal to be burnt out.

In summary, the charging terminal provided by this embodiment can monitor the temperature of the plug portion in real time, and prevent the plug portion from being burnt, and even if the plug portion is burnt, the charging terminal is convenient to maintain, and the maintenance cost is low.

Example two:

as shown in fig. 6-8, the liquid-cooled charging device of this embodiment includes the charging terminal of the first embodiment, and further includes a cavity 3, one end of the cavity 3 is connected to the liquid-cooled cable 31 in a sealing manner, the other end of the cavity 3 is connected to the crimping member 1 of the first embodiment in a sealing manner, specifically, the liquid-cooled cable 31 has a connection sleeve 311, one end of the connection sleeve 311 is disposed inside the cavity 3, specifically, the connection sleeve 311 can penetrate through the right side of the cavity 3 in fig. 7 and can be engaged with one end of the cavity 3 through a bayonet, so that the connection sleeve 311 cannot penetrate through the left side of the cavity 3 in fig. 7, meanwhile, the other end of the connection sleeve 311 is provided with an external thread, in this embodiment, the connection sleeve 311 is locked by a locking member 32, the locking member 32 is a locking nut, during the process of screwing the locking member 32 with the connection sleeve 311, likewise, the crimp 1 is also sealed by the seal 16.

Further, as shown in fig. 7, a communication port 33 for receiving the cooling liquid is further provided in the cavity 3, the communication port 33 is connected to the cooling liquid storage tank through a communication pipe 34 and sealed by a sealing rubber, the cooling liquid flows in the cavity 3, the charging terminal and the cable core of the liquid-cooled cable can be cooled, and particularly, when the temperature sensor 23 detects that the temperature is too high, the controller can control the magnitude of the current of the charging circuit, and at the same time, control the flow rate and flow rate of the cooling liquid and the rotation speed of the fan in the cooling device, so as to further lower the temperature of the connector 2.

Further, the compression joint member 1 is fixed in the cavity 3 through a pin 35, specifically, as shown in fig. 4 and 7, a fitting hole 15 which is in interference fit with the pin 35 is arranged on the compression joint member 1, a sealing plug 38 is arranged on the upper portion of the cavity 3, the pin 35 can be pressed into the fitting hole 15 of the compression joint member 1 from top to bottom before the sealing plug 38 is plugged in, and the fitting hole 15 is tightly propped, and meanwhile, a limiting groove 36 which is matched with the end portion of the pin 35 is arranged on the cavity 3 to prevent the pin 35 from moving radially, so that the charging terminal and the cavity 3 can be prevented from rotating relatively in the plugging and unplugging process.

Further, as shown in fig. 4, the crimp member 1 is formed with a plurality of heat radiating fins 17, which can increase the heat radiating area of the crimp member 1, so that the cooling effect of the charging terminal is better.

Further, as shown in fig. 9, the cavity 3 of this embodiment is further provided with a threading portion 37 for fixing the lead of the male connector in the first embodiment, the threading portion 37 is provided with two communicating threading holes, and the lead can pass through one of the threading holes and pass out of the other threading hole, thereby fixing the lead.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (10)

1. A charging terminal, comprising:

the crimping piece (1), wherein a first end of the crimping piece (1) is a crimping part (11), and a second end of the crimping piece (1) is detachably connected with a connector (2);

connector (2), the first end of connector (2) with the second end connection of crimping piece (1), the second end of connector (2) is inside sunken to have and connects slot (21), connect and dispose elasticity in slot (21) and touch and indicate (22), be close to on the outer wall of connector (2) elasticity touches and indicates (22) and is equipped with temperature sensor (23).

2. A charging terminal according to claim 1, characterized in that the second end of the crimp member (1) is provided with a protrusion (13) and the first end of the connector member (2) is provided with a recess (25) for cooperation with the protrusion (13).

3. A charging terminal according to claim 1, characterized in that the second end of the crimping member (1) is provided with a threaded hole (12), the bottom surface of the receiving slot (21) is provided with a round hole (24), the connector (2) is connected with the crimping member (1) by means of a screw (26), the head of the screw (26) is arranged in the receiving slot (21), and the middle part of the screw (26) passes through the round hole (24) and is screwed in the threaded hole (12).

4. A charging terminal according to claim 1, characterised in that the resilient contact finger (22) is a spring contact finger.

5. A charging terminal according to claim 1, wherein the outer wall of the connector (2) is formed with a mounting groove (28) for mounting the temperature sensor (23), and the outer wall of the connector (2) is further sleeved with a fixing sleeve (29) for fixing the temperature sensor (23).

6. A charging terminal according to claim 1, wherein the temperature sensor (23) is connected to a housing (232) by a lead wire (231), the housing (232) is of a connector type, and the housing (232) is fixed between the crimp member (1) and the connector member (2).

7. A liquid-cooled charging device comprising the charging terminal according to claims 1 to 6, further comprising:

the liquid cooling cable crimping device comprises a cavity (3), wherein a liquid cooling cable (31) is hermetically connected to one end of the cavity (3), the other end of the cavity (3) is hermetically connected to a crimping piece (1), and a communicating port (33) for allowing cooling liquid to enter and exit is further formed in the cavity (3).

8. A liquid-cooled charging apparatus according to claim 7, wherein the liquid-cooled cable (31) has a connecting sleeve (311), and the connecting sleeve (311) is clamped to one end of the chamber (3) by a locking member (32) and sealed by a sealing ring (312) sleeved on the connecting sleeve (311).

9. A liquid-cooled charging device according to claim 7, characterized in that a pin (35) is clamped in the crimp (1), and a limiting groove (36) is provided in the cavity (3) and engages with the end of the pin (35) to prevent the pin (35) from moving radially.

10. A liquid-cooled charging apparatus according to claim 7, characterised in that the crimp member (1) is formed with a plurality of heat dissipating fins (17).

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