CN210803545U

CN210803545U - Probe module

Info

Publication number: CN210803545U
Application number: CN201921106139.9U
Authority: CN
Inventors: 余文; 陈建; 杨京; 张华�; 仇伍林; 陈超; 钟辉明
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-06-19
Anticipated expiration: 2029-07-15

Abstract

The utility model provides a probe module, it includes probe subassembly, support frame and clamp plate. The pressing plate is arranged on one side of the support frame and connected to the support frame. The probe assembly is a plurality of, and each probe assembly includes positioning seat and probe. The positioning seat is provided with a main body part and a first protruding part, the main body part is located between the supporting frame and the pressing plate, and the probe is arranged on the main body part. The end part of the supporting frame close to the pressing plate is provided with a plurality of clamping grooves. The first protruding part extends from the surface of the main body part close to the supporting frame, and the first protruding part of each positioning seat is inserted into the clamping groove.

Description

Probe module

Technical Field

The utility model relates to a battery production field especially relates to a probe module.

Background

In the production process of the lithium ion battery, the formation process plays a critical role in the quality of the battery. In the formation process, the battery needs to be charged and discharged by using a plurality of probes of the probe module. When the specification of the battery is changed, the positions of a plurality of probes in the probe module need to be adjusted; in the known probe module, the assembly and disassembly processes of a plurality of probes of the probe module are complex, so that the model changing cost is high, and the efficiency of a battery formation process is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In view of the problem that exists among the background art, the utility model aims to provide a probe module, it can simplify the structure, improves dismouting efficiency.

In order to achieve the above object, the utility model provides a probe module, it includes probe assembly, support frame and clamp plate. The pressing plate is arranged on one side of the support frame and connected to the support frame. The probe assembly is a plurality of, and each probe assembly includes positioning seat and probe. The positioning seat is provided with a main body part and a first protruding part, the main body part is located between the supporting frame and the pressing plate, and the probe is arranged on the main body part. The end part of the supporting frame close to the pressing plate is provided with a plurality of clamping grooves. The first protruding part extends from the surface of the main body part close to the supporting frame, and the first protruding part of each positioning seat is inserted into the clamping groove.

The support frame includes first curb plate and second curb plate, and the tip that the second curb plate is close to the clamp plate is formed with the draw-in groove. The positioning seat is also provided with a second protruding part, the second protruding part extends from the surface of the main body part close to the supporting frame, and the second protruding part is positioned between the first side plate and the second side plate.

The positioning seat is provided with a first through hole which penetrates through the main body part and the second protruding part. The probe passes through the first through hole.

The probe comprises a detection head and a connecting shaft, the detection head is arranged on one side, close to the pressing plate, of the main body part, and the connecting shaft penetrates through the first through hole and is connected to the detection head. The probe assembly further comprises a spring, and the spring is sleeved on the connecting shaft and located between the main body portion and the detection head.

Along the direction of keeping away from detecting the head, the external diameter of connecting axle reduces gradually.

The pressing plate is provided with a strip-shaped second through hole, and the connecting shafts of the probes penetrate through the second through hole.

The end part of the first side plate close to the pressure plate is also provided with a clamping groove. The first protruding parts of each positioning seat are two, and the two first protruding parts are respectively inserted into the clamping grooves of the first side plate and the clamping grooves of the second side plate. The second protrusion is located between and connected to the two first protrusions.

The probe module further comprises a connecting circuit, and the connecting circuit is arranged on the support frame and connected to the probe. The connection line includes a plurality of sub-lines, each of which is connected to the probe of a corresponding one of the probe assemblies. Each sub-circuit comprises a first conducting strip and a second conducting strip, the first conducting strip is fixed on the first side plate, the second conducting strip is connected with the first conducting strip and the probe, and the rigidity of the first conducting strip is larger than that of the second conducting strip.

The probe module further comprises a fixed seat, and the fixed seat is arranged on the first side plate. The fixing seat is provided with a plurality of grooves, and each first conducting strip penetrates through the grooves.

The number of the clamping grooves is larger than the sum of the number of the first protruding parts of the positioning seats.

The utility model has the advantages as follows: the probe module of this application can be connected to the power with a plurality of batteries, realizes the formation of a plurality of batteries simultaneously. Simultaneously, this application need not to set up the fastener to every positioning seat through the positioning seat of the fixed a plurality of probe subassemblies of cooperation of support frame and clamp plate to simplify the structure of probe module, improve the dismouting efficiency of probe subassembly.

Drawings

Fig. 1 is a schematic view of a probe module according to the present invention.

Fig. 2 is an enlarged view of a circled portion of fig. 1.

Fig. 3 is another schematic view of the probe module according to the present invention, wherein the second side plate is omitted.

Fig. 4 is a schematic view of a first side plate of the probe module according to the present invention.

Fig. 5 is an enlarged view of a circled portion of fig. 4.

Fig. 6 is a schematic view of a second side plate of the probe module according to the present invention.

Fig. 7 is an enlarged view of a circled portion of fig. 6.

Fig. 8 is a schematic view of a pressing plate of the probe module according to the present invention.

Fig. 9 is a schematic diagram of a probe assembly of the probe module according to the present invention.

Figure 10 is a schematic view of a probe assembly, side plates and pressure plates according to the present invention.

Fig. 11 is a schematic view of a fixing base of the probe module according to the present invention.

Fig. 12 is a schematic view of a plurality of first conductive sheets of the probe module according to the present invention.

Fig. 13 is a schematic view of a second conductive sheet of the probe module according to the present invention.

Wherein the reference numerals are as follows:

1 Probe assembly

11 positioning seat

111 main body part

112 first protrusion

113 second projection

12 Probe

121 detection head

122 connecting shaft

13 spring

2 support frame

21 first side plate

22 second side plate

3 pressing plate

4 connecting line

41 sub-line

411 first conductive sheet

412 second conductive sheet

5 quick connector

6 fixed seat

61 groove

7 end plate

8 fastener

9 nut

G card slot

H1 first through hole

H2 second through hole

In the X longitudinal direction

Y width direction

Direction of Z height

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means more than two (including two); the term "coupled", unless otherwise specified or indicated, is to be construed broadly, e.g., "coupled" may be a fixed or removable connection or a connection that is either integral or electrical or signal; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

The probe module of this application can be applied to the formation technology of battery. In the field of lithium ion battery manufacturing, the formation process plays a critical role in the quality of the battery. The main content of the formation is to form a passivation film, namely an SEI film, on a negative electrode plate in the battery through charging and discharging of the battery.

A battery is generally provided with two electrode terminals, i.e., a positive electrode terminal and a negative electrode terminal. During formation, the battery can be charged and discharged through the two electrode terminals. The probe module is used for connecting the electrode terminal and an external power supply so as to realize the formation of the battery.

Specifically, referring to fig. 1 to 3, the probe module of the present application includes a probe assembly 1, a support frame 2, and a pressing plate 3.

Support frame 2 is the supporting mechanism of the probe module of this application, can fix in the frame of outside. The pressing plate 3 is arranged on one side of the support frame 2 and connected to the support frame 2. The platen 3 may be located on the lower side of the support frame 2 in the height direction Z. The support frame 2 may be a U-shaped structure that opens toward the platen 2.

The pressing plate 3 may be directly connected to the supporting frame 2 by fasteners, or may be connected to the supporting frame 2 by other members. Preferably, the probe module of this application still includes end plate 7, and end plate 7 sets up in the one end of support frame 2 along length direction X and through bolted connection in support frame 2, and clamp plate 3 can be located the downside of end plate 7 and through bolted connection in end plate 7. By tightening or loosening the bolts, the pressing plate 3 can be moved up and down with respect to the supporting frame 2.

The probe assembly 1 is plural, and each probe assembly 1 includes a positioning base 11 and a probe 12. The probe 12 of each probe assembly 1 is used for connecting an external power supply and a battery so as to charge and discharge the battery and realize formation of the battery. In the production process of the battery, a plurality of batteries are generally required to be formed at the same time so as to improve the efficiency; and the probe module of this application sets up a plurality of probe subassemblies 1, can become a plurality of batteries simultaneously to raise the efficiency, reduction in production cost.

Referring to fig. 2 and 9, the positioning stand 11 includes a main body 111 and a first protrusion 112, the main body 111 is located between the holder 2 and the platen 3, and the probe 12 is provided on the main body 111. In the height direction Z, a part of the main body 111 is clamped between the support frame 2 and the pressing plate 3, so that the support frame 2 and the pressing plate 3 can fix the positioning seat 11, and the positioning seat 11 and the probe 12 are prevented from shaking.

The end part of the support frame 2 close to the pressing plate 3 is provided with a plurality of clamping grooves G. The opening of the card slot G faces the pressure plate 3. The first protrusion 112 extends from a surface of the main body 111 close to the support frame 2, and the first protrusion 112 of each positioning seat 11 is inserted into the card slot G. When the positioning seat 11 is assembled, the first protruding part 112 and the clamping groove G are matched to play a role in positioning, so that the assembly process is simplified, and meanwhile, the clamping groove G can also limit the shaking of the positioning seat 11 in the length direction X, so that the stability of the positioning seat 11 is further improved.

The plurality of probes 12 are electrically connected to an external power supply in advance. When the cells are to be formed, a plurality of cells are placed in a jig located on the lower side of the platen 3 in the height direction Z, and the electrode terminals of each cell are vertically opposed to the corresponding probes 12. Then, an external power device (e.g., a motor, a cylinder, etc.) moves the plurality of batteries upward through the fixture, and when the electrode terminals of each battery contact the corresponding probe 12, the power device stops working, and finally the batteries are formed. After formation is completed, the power equipment drives the battery to move downward so that the electrode terminal is separated from the probe 12.

The support frame 2, the end plate 7 and the pressure plate 3 may be connected together by a plurality of bolts. When the probe assemblies 1 need to be installed, the bolts (i.e. the connecting bolts between the end plate 7 and the pressure plate 3) are loosened to increase the distance between the support frame 2 and the pressure plate 3, and then a plurality of probe assemblies 1 are placed on the pressure plate 3, and the first protrusions 112 of the positioning seats 11 of each probe assembly 1 are vertically opposite to the corresponding clamping grooves G. Finally, the bolts are tightened to reduce the distance between the support frame 2 and the pressure plate 3, so that the first protrusion 112 is inserted into the slot G and the main body 111 is clamped between the support frame 2 and the pressure plate 3. When the probe assembly 1 needs to be disassembled, the bolts only need to be unscrewed.

To sum up, the probe module of this application can be connected to the power with a plurality of batteries, realizes the formation of a plurality of batteries simultaneously. Simultaneously, this application need not to set up the fastener to every positioning seat 11 through the positioning seat 11 of the fixed a plurality of probe subassemblies 1 of the cooperation of support frame 2 and clamp plate 3 to simplify the structure of probe module, improve the dismouting efficiency of probe subassembly 1.

In the production process of batteries, the batteries with different specifications are generally required to be formed. When the specification of the battery is changed, the positions of the electrode terminals of the battery are also changed, and thus, in order to accommodate the change in the specification of the battery, the positions of the probes 11 need to be changed accordingly.

Therefore, it is preferable that the number of the locking grooves G is greater than the sum of the number of the first protrusions 112 of the plurality of positioning seats 11. That is to say, this application can make the probe module of this application be applicable to the battery of different specifications through the quantity of draw-in groove G on the increase support frame 2. When the specification of the battery is changed, the first protrusion 112 of the positioning seat 11 is inserted into the corresponding slot G. Therefore, the probe module has better universality.

Specifically, when the specifications of the battery are changed, the connecting bolts between the end plate 7 and the pressure plate 3 are loosened to increase the distance between the support frame 2 and the pressure plate 3; at this time, the first protrusion 112 of the positioning seat 11 of each probe assembly 1 is disengaged from the locking groove G. Then, the positioning bases 11 of the probe assemblies 1 are slid in the longitudinal direction X, so that the first protrusions 112 of the positioning bases 11 are moved to the lower side of the desired card slots G. Finally, the first protrusion 112 is inserted into the catching groove G by tightening the bolts to reduce the distance between the support frame 2 and the pressing plate 3. In conclusion, the present application can improve the disassembling efficiency of the probe assembly 1 and shorten the time for changing the model.

The probe module further comprises a connecting circuit 4, and the connecting circuit 4 is arranged on the support frame 2 and connected to the probe 12. The connection line 4 can electrically connect the probe 12 to an external power source.

Referring to fig. 4 and 6, the support frame 2 includes a first side plate 21 and a second side plate 22, and the first side plate 21 and the second side plate 22 may be arranged in the width direction Y. The first side plate 21 may be bent into an L shape, and has a first main region substantially perpendicular to the width direction Y and a first bending region substantially perpendicular to the height direction Z. The second side plate 22 may be bent into an L-shape and has a second main region substantially perpendicular to the width direction Y and a second bending region substantially perpendicular to the height direction Z. The first bending area and the second bending area extend oppositely and are connected through bolts. The first side plate 21, the second side plate 22 and the pressure plate 3 enclose a substantially rectangular inner cavity. The first side plate 21 and the second side plate 22 may be fixed to the end plate 7 by fasteners.

Referring to fig. 6 and 7, the end of the second side plate 22 near the pressing plate 3 is formed with a catching groove G. The plurality of card slots G on the second side plate 22 are arranged at intervals along the length direction X. The first protrusion 112 of the positioning socket 11 can be inserted into the slot G of the second side plate 22.

Referring to fig. 9 and 10, the positioning seat 11 further has a second protrusion 113, the second protrusion 113 extends from a surface of the main body 111 close to the support frame 2, and the second protrusion 113 is located between the first side plate 21 and the second side plate 22. The first side plate 21 and the second side plate 22 can limit the second protrusion 113 from both sides of the width direction Y, so that the positioning seat 11 is prevented from shaking in the width direction Y, and the stability of the positioning seat 11 is improved.

Referring to fig. 4 and 5, preferably, the end of the first side plate 21 near the pressing plate 3 is also formed with a card slot G. The first side plate 21 has a plurality of slots G arranged at intervals along the length direction X.

Two first protrusions 112 are provided for each positioning seat 11, and the two first protrusions 112 are inserted into the respective slots G of the first side plate 21 and the second side plate 22. The two first protrusions 112 may improve positioning accuracy, and in addition, when the apparatus vibrates, the two first protrusions 112 may disperse the force, reducing the risk of breakage.

Referring to fig. 9, the second protrusion 113 is positioned between the two first protrusions 112 and connected to the two first protrusions 112. The second protrusion 113 and the first protrusion 112 are integrally connected, so that the strength of the entire positioning seat 11 can be improved.

Referring to fig. 9 and 10, the positioning socket 11 is provided with a first through hole H1, and the first through hole H1 penetrates the main body 111 and the second protrusion 113. One end of the probe 12 is located at an upper side of the positioning socket 11 so as to be electrically connected to an external power source, and the other end of the probe 12 passes through the first through hole H1 and extends to a lower side of the positioning socket 11 so as to be in contact with an electrode terminal of the battery.

The probe 12 includes a detection head 121 and a connection shaft 122, and the detection head 121 is provided on the side of the body portion 111 close to the platen 3. The sensing head 121 is used to contact the electrode terminal of the battery, and in order to secure the flow area, the sensing head 121 may have a large size, and preferably, the outer diameter of the sensing head 121 is larger than the aperture of the first through hole H1.

The connecting shaft 122 passes through the first through hole H1 and can slide up and down along the first through hole H1. One end of the connection shaft 122 is connected to the detection head 121, and the other end passes through the first through hole H1 and is electrically connected to an external power source.

Preferably, one end of the connecting shaft 122 far away from the detecting head 121 can be in threaded connection with the two nuts 9, and the connecting line 4 can be sleeved on the connecting shaft 122 and clamped between the two nuts 9. Further, the size of the nut 9 is preferably larger than the first through hole H1 hole diameter to avoid the nut 9 passing through the first through hole H1.

The probe assembly 1 further includes a spring 13, and the spring 13 is sleeved on the connecting shaft 122 and located between the main body 111 and the detecting head 121. The upper end of the spring 13 abuts against the body 111, and the lower end abuts against the detection head 121.

When the battery needs to be formed, the battery moves upwards; after the electrode terminals of the battery contact the detection head 121, the battery can continue to move upward for a certain distance to drive the detection head 121 to move upward. And the body portion 111 may abut against the spring 13 from the upper side and provide a supporting force to the spring 13, and the spring 13 is compressed by the force. Meanwhile, the elastic force of the spring 13 presses the sensing head 121 against the electrode terminal to secure an overcurrent area between the electrode terminal and the sensing head. In addition, the spring 13 can play a role in buffering, and the battery and the detection head 121 are prevented from being damaged by overlarge pressure.

In addition, some probes 12 do not need to be operated when the number of batteries is reduced due to an increase in the size. At this time, the detection head 121 of the extra probe 12 is manually pushed upward, and the spring 13 is compressed. When the detection head 121 moves upwards, the distance between the nut 9 and the positioning seat 11 is correspondingly increased. When the distance between the nut 9 and the positioning seat 11 is increased to a certain degree, the buckle 8 is sleeved on the connecting shaft 122 and clamped between the nut 9 and the positioning seat 11 to maintain the compression state of the spring 13. At this time, the detection head 121 of the extra probe 12 is retracted inward, and does not interfere with the battery. That is, when the specification of the battery is changed, the probe module of the present application does not need to disassemble the probes 12, thereby simplifying the remodeling process.

The outer diameter of the connecting shaft 122 gradually decreases in a direction away from the detection head 121. In the position of smaller diameter, the catch 8 can easily snap in.

Referring to fig. 8 and 10, the press plate 3 is provided with a bar-shaped second through hole H2 through which the connection shafts 122 of the plurality of probes 12 pass. By providing the second through hole H2, the platen 3 can be prevented from interfering with the probe 12 and the spring 13. In addition, the bar-shaped second through hole H2 has a large size in the length direction X, and therefore, when the position of the probe 12 is changed, the connection shaft 122 of the probe 12 can freely slide within the second through hole H2.

Referring to fig. 5, the connection line 4 includes a plurality of sub-lines 41, and each sub-line 41 is connected to the probe 12 of a corresponding one of the probe assemblies 1. Referring to fig. 12 and 13, each sub-circuit 41 includes a first conductive sheet 411 and a second conductive sheet 412, the first conductive sheet 411 is fixed to the first side plate 21, the second conductive sheet 412 connects the first conductive sheet 411 and the probe 12, and the rigidity of the first conductive sheet 411 is greater than that of the second conductive sheet 412. The first conductive sheet 411 may have a large rigidity so as to be fixed to the first side plate 21. The first conductive sheet 411 may be a copper bar.

When the specification of the battery is changed, the position of the probe 12 needs to be changed correspondingly, and if the rigidity of the second conductive sheet 412 is high, the second conductive sheet 412 is not easy to bend when the probe 12 is moved, so that the model changing efficiency is affected. Therefore, the second conductive sheet 412 with lower rigidity is preferably used in the present application, and the second conductive sheet 412 with lower rigidity is easily bent and can adapt to the change of the specifications of the battery. The second conductive sheet 412 may be a flexible power line.

The probe module further comprises a fixing seat 6, and the fixing seat 6 is arranged on the first side plate 21. The fixing base 6 may be plural and mounted to the first side plate 21 by a fastener. The fixing base 6 is provided with a plurality of grooves 61, and each first conductive sheet 411 passes through the grooves 61. The fixing base 6 can support the first conductive plate 411, and meanwhile, the assembly and disassembly process of the first conductive plate 411 can be simplified.

The probe module further comprises a quick-connection plug 5, the quick-connection plug 5 is fixed on the first side plate 21, and the first conductive sheets 411 of the plurality of sub-circuits 41 are connected to the quick-connection plug 5. The quick plug 5 can realize the quick disconnection and connection of the circuit by the quick plug and pull of the male and female connectors.

Claims

1. A probe module is characterized by comprising a probe assembly (1), a support frame (2) and a pressing plate (3);

the pressing plate (3) is arranged on one side of the support frame (2) and is connected with the support frame (2);

the probe assembly (1) is multiple, and each probe assembly (1) comprises a positioning seat (11) and a probe (12);

the positioning seat (11) is provided with a main body part (111) and a first protruding part (112), the main body part (111) is positioned between the support frame (2) and the pressing plate (3), and the probe (12) is arranged on the main body part (111);

a plurality of clamping grooves (G) are formed in the end part, close to the pressing plate (3), of the supporting frame (2);

the first protrusion (112) extends from the surface of the main body (111) close to the support frame (2), and the first protrusion (112) of each positioning seat (11) is inserted into the slot (G).

2. The probe module of claim 1,

the supporting frame (2) comprises a first side plate (21) and a second side plate (22), and a clamping groove (G) is formed in the end part, close to the pressing plate (3), of the second side plate (22);

the positioning seat (11) further comprises a second protruding part (113), the second protruding part (113) extends from the surface, close to the supporting frame (2), of the main body part (111), and the second protruding part (113) is located between the first side plate (21) and the second side plate (22).

3. The probe module of claim 2,

the positioning seat (11) is provided with a first through hole (H1), and the first through hole (H1) penetrates through the main body part (111) and the second protrusion part (113);

the probe (12) passes through the first through hole (H1).

4. The probe module of claim 3,

the probe (12) comprises a detection head (121) and a connecting shaft (122), the detection head (121) is arranged on one side, close to the pressure plate (3), of the main body part (111), and the connecting shaft (122) penetrates through the first through hole (H1) and is connected to the detection head (121);

the probe assembly (1) further comprises a spring (13), and the spring (13) is sleeved on the connecting shaft (122) and located between the main body portion (111) and the detection head (121).

5. The probe module according to claim 4, wherein the connecting shaft (122) has an outer diameter that gradually decreases in a direction away from the detection head (121).

6. The probe module according to claim 4, wherein the press plate (3) is provided with a second through hole (H2) in a bar shape, and the connection shafts (122) of the plurality of probes (12) pass through the second through hole (H2).

7. The probe module of claim 2,

a clamping groove (G) is also formed at the end part of the first side plate (21) close to the pressure plate (3);

the number of the first protruding parts (112) of each positioning seat (11) is two, and the two first protruding parts (112) are respectively inserted into the clamping grooves (G) of the first side plate (21) and the clamping grooves (G) of the second side plate (22);

the second protrusion (113) is located between the two first protrusions (112) and connected to the two first protrusions (112).

8. The probe module of claim 2,

the probe module further comprises a connecting circuit (4), and the connecting circuit (4) is arranged on the support frame (2) and connected to the probe (12);

the connection line (4) comprises a plurality of sub-lines (41), and each sub-line (41) is connected to the probe (12) of one corresponding probe assembly (1);

each sub-circuit (41) comprises a first conducting plate (411) and a second conducting plate (412), the first conducting plate (411) is fixed on the first side plate (21), the second conducting plate (412) is connected with the first conducting plate (411) and the probe (12), and the rigidity of the first conducting plate (411) is larger than that of the second conducting plate (412).

9. The probe module of claim 8,

the probe module further comprises a fixed seat (6), and the fixed seat (6) is arranged on the first side plate (21);

the fixed seat (6) is provided with a plurality of grooves (61), and each first conducting strip (411) penetrates through the grooves (61).

10. The probe module according to any of claims 1 to 9, wherein the number of card slots (G) is greater than the sum of the number of first protrusions (112) of the plurality of positioning sockets (11).