阅读说明：本技术 连接器及电池组件 (Connector and battery pack ) 是由 黄志伟 罗自皓 于 2021-07-26 设计创作，主要内容包括：本发明提供一种连接器及电池组件,连接器包括相对插合的第一基座和第二基座,第一基座的一侧表面上设有第一凸台,第一凸台的外侧环设至少一个第二凸台,第二基座的一侧表面上设有第一凹槽,第一凹槽的外侧环设至少一个第二凹槽,第一凸台插设在第一凹槽中,第二凸台插设在第二凹槽中；第一凸台和第二凸台的沿第一基座的厚度方向的侧壁上均设有第一端子,第一凹槽和第二凹槽的沿第二基座的厚度方向的侧壁上均设有第二端子,第一端子和第二端子抵接。这样,可以增大第一端子和第二端子间的抵接面积。因此,本发明提供的连接器及电池组件,减小第一端子和第二端子之间的接触电阻,降低连接器的温度,保证电池组件的性能。(The invention provides a connector and a battery pack, wherein the connector comprises a first base and a second base which are oppositely inserted, a first boss is arranged on one side surface of the first base, at least one second boss is annularly arranged on the outer side of the first boss, a first groove is arranged on one side surface of the second base, at least one second groove is annularly arranged on the outer side of the first groove, the first boss is inserted into the first groove, and the second boss is inserted into the second groove; all be equipped with first terminal on the thickness direction's of first base lateral wall along first boss and second boss, all be equipped with the second terminal on the thickness direction's of second base lateral wall along first recess and second recess, first terminal and second terminal butt. Thus, the contact area between the first terminal and the second terminal can be increased. Therefore, the connector and the battery pack provided by the invention reduce the contact resistance between the first terminal and the second terminal, reduce the temperature of the connector and ensure the performance of the battery pack.)

1. A connector, comprising: the device comprises a first base and a second base which are oppositely inserted, wherein a first boss is arranged on one side surface of the first base, at least one second boss is annularly arranged on the outer side of the first boss, a first groove is arranged on one side surface of the second base, at least one second groove is annularly arranged on the outer side of the first groove, the first boss is inserted into the first groove, and the second boss is inserted into the second groove;

the first boss and the second boss are respectively provided with a first terminal on the side wall in the thickness direction of the first base, the first groove and the second groove are respectively provided with a second terminal on the side wall in the thickness direction of the second base, and the first terminal is abutted to the second terminal.

2. The connector of claim 1, wherein the second boss and the second recess are both annular structures;

at least two second bosses are annularly arranged on the outer side of the first boss, and are sequentially sleeved inside and outside and are arranged at intervals;

at least two second grooves are annularly arranged on the outer side of the first groove, and at least two second grooves are sequentially sleeved with one another at intervals.

3. The connector of claim 1, wherein the first terminal on the first boss comprises a first inner positive terminal, a first inner negative terminal, and a first inner signal terminal;

the first terminal on the second boss comprises a first outer positive terminal, a first outer negative terminal and a first outer signal terminal;

the first inner positive terminal and the first outer positive terminal are connected in a one-to-one corresponding manner, and the first inner negative terminal and the first outer negative terminal are connected in a one-to-one corresponding manner;

the first inner signal terminals and the first outer signal terminals are connected in a one-to-one correspondence manner.

4. The connector of claim 3, wherein the second terminal on the first recess includes a second inner positive terminal, a second inner negative terminal, and a second inner signal terminal;

the second groove comprises an inner groove wall close to the first groove and an outer groove wall far away from the first groove, and the second terminal on the inner groove wall comprises a second outer positive terminal, a second outer negative terminal and a second outer signal terminal;

the second inner positive terminal and the second outer positive terminal are connected in a one-to-one corresponding manner, the second inner negative terminal and the second outer negative terminal are connected, and the second inner signal terminal and the second outer signal terminal are connected in a one-to-one corresponding manner;

the second terminal on the outer slot wall includes a second auxiliary positive terminal and a second auxiliary negative terminal.

5. The connector according to any one of claims 1 to 4, wherein the first terminal includes a first connection portion, the second terminal includes a second connection portion, and the first connection portion and the second connection portion abut.

6. The connector of claim 5, wherein the first connection portion has at least a partial first bend, the first bend abutting the second connection portion;

and/or the second connecting part is provided with at least a part of second bending section which is abutted with the first connecting part.

7. The connector according to any one of claims 1 to 4, wherein a spring is provided on the first terminal or the second terminal.

8. The connector of claim 7, wherein an opening is provided on the first terminal or the second terminal, and the spring is located in the opening.

9. A battery pack, comprising at least: a first circuit board and a second circuit board and a connector as claimed in any one of claims 1 to 8, a first terminal of said connector being electrically connected to said first circuit board and a second terminal of said connector being electrically connected to said second circuit board.

10. The battery pack of claim 9, wherein the first circuit board and the second circuit board are respectively located on opposite sides of the connector, a first solder tail is disposed on a side of the first terminal facing the first circuit board, the first terminal is connected to the first circuit board via the first solder tail, a second solder tail is disposed on a side of the second terminal facing the second circuit board, and the second terminal is connected to the second circuit board via the second solder tail.

Technical Field

The embodiment of the invention relates to the technical field of connectors, in particular to a connector and a battery pack.

Background

Board-to-board Connectors (BTB Connectors for short) are the most powerful products in the connector products at present, and are mainly applied to power systems, communication networks, and the like. The BTB connector can be used as a current transmission bridge between the battery and the mainboard.

In the related art, the BTB connector includes a first base and a second base that are relatively inserted, the first base is provided with a first terminal, the second base is provided with a second terminal, and the first terminal and the second terminal are abutted in one-to-one correspondence.

However, the conventional BTB connector has a high temperature during operation, which affects the performance of the battery pack.

Disclosure of Invention

In view of this, embodiments of the present invention provide a connector and a battery assembly, which can effectively reduce the temperature of the connector to ensure the performance of the battery assembly.

An embodiment of the present invention provides a connector, including: the device comprises a first base and a second base which are oppositely inserted, wherein a first boss is arranged on one side surface of the first base, at least one second boss is annularly arranged on the outer side of the first boss, a first groove is arranged on one side surface of the second base, at least one second groove is annularly arranged on the outer side of the first groove, the first boss is inserted into the first groove, and the second boss is inserted into the second groove;

all be equipped with first terminal on the thickness direction's of first base lateral wall along first boss and second boss, all be equipped with the second terminal on the thickness direction's of second base lateral wall along first recess and second recess, first terminal and second terminal butt.

According to the connector provided by the embodiment of the invention, at least one second boss is annularly arranged on the outer side of the first boss of the first base, at least one second groove is annularly arranged on the outer side of the first groove of the second base, the first boss is inserted into the first groove, and the second boss is inserted into the second groove. Like this, increased and to have set up the side wall area of first terminal and second terminal on first base and the second base, the area of first terminal and second terminal can increase to increase the butt area between first terminal and the second terminal, reduce the contact resistance between first terminal and the second terminal, reduce the temperature of connector, guarantee battery pack's performance.

In some embodiments, which may include the above embodiments, the second boss and the second groove are both annular structures;

at least two second bosses are annularly arranged on the outer side of the first boss, and are sequentially sleeved inside and outside and are arranged at intervals;

at least two second grooves are annularly arranged on the outer side of the first groove, and the at least two second grooves are sequentially sleeved with the inner and outer parts and are arranged at intervals.

In some embodiments, which may include the above embodiments, the number of the second bosses and the second grooves is one;

the first terminal on the first boss comprises a first inner positive terminal, a first inner negative terminal and a first inner signal terminal;

the first terminal on the second boss comprises a first outer positive terminal, a first outer negative terminal and a first outer signal terminal;

the first inner positive terminal and the first outer positive terminal are connected in a one-to-one corresponding mode, and the first inner negative terminal and the first outer negative terminal are connected in a one-to-one corresponding mode;

the first inner signal terminals and the first outer signal terminals are connected in a one-to-one correspondence manner.

In some embodiments, which may include the above embodiments, the second terminal on the first groove includes a second inner positive terminal, a second inner negative terminal, and a second inner signal terminal;

the second groove comprises an inner groove wall close to the first groove and an outer groove wall far away from the first groove, and the second terminal on the inner groove wall comprises a second outer positive terminal, a second outer negative terminal and a second outer signal terminal;

the second inner positive terminal and the second outer positive terminal are connected in a one-to-one corresponding mode, the second inner negative terminal and the second outer negative terminal are connected, and the second inner signal terminal and the second outer signal terminal are connected in a one-to-one corresponding mode;

the second terminal on the outer slot wall includes a second auxiliary positive terminal and a second auxiliary negative terminal.

In some embodiments, which may include the above embodiments, the first terminal includes a first connection portion, the second terminal includes a second connection portion, and the first connection portion and the second connection portion abut.

Like this, connecting portion can form the uplift structure, and the uplift structure has certain elastic deformation ability, can make the contact pressure between first connecting portion and the second connecting portion great, reduces the heat effect.

In addition, since the connection portion between the second inner signal terminal 233 and the second outer signal terminal 236 makes the two have the same potential, the connection portion also increases the area of the two to increase the heat dissipation area of the two, which is beneficial to heat dissipation.

In some embodiments, which may include the above embodiments, the first connection portion has at least a portion of a first bend, the first bend abutting the second connection portion;

and/or the second connecting part is provided with at least part of a second bending section which is abutted with the first connecting part.

In this way, the contact pressure of the first connection portion and the second connection portion can be increased.

In some embodiments, which may include the above embodiments, the first terminal or the second terminal is provided with a spring plate.

Thus, the contact pressure of the first terminal and the second terminal can be increased.

In some embodiments, which may include the above embodiments, the first terminal or the second terminal is provided with an opening, and the elastic piece is located in the opening.

Therefore, the opening can provide clearance for the elastic sheet, so that the elastic sheet has a larger deformation space and provides larger contact pressure.

In addition, an embodiment of the present invention further provides a battery pack, which at least includes: the first and second circuit boards and the connector of the above embodiment, the first terminal of the connector is electrically connected to the first circuit board, and the second terminal of the connector is electrically connected to the second circuit board.

According to the battery assembly provided by the embodiment of the invention, at least one second boss is annularly arranged on the outer side of the first boss of the first base, at least one second groove is annularly arranged on the outer side of the first groove of the second base, the first boss is inserted into the first groove, and the second boss is inserted into the second groove. Like this, increased and to have set up the side wall area of first terminal and second terminal on first base and the second base, the area of first terminal and second terminal can increase to increase the butt area between first terminal and the second terminal, reduce the contact resistance between first terminal and the second terminal, reduce the temperature of connector, guarantee battery pack's performance.

In some embodiments, which may include the above embodiments, the first circuit board and the second circuit board are respectively located on two opposite sides of the connector, a first solder leg is disposed on a side of the first terminal facing the first circuit board, the first terminal is connected to the first circuit board through the first solder leg, a second solder leg is disposed on a side of the second terminal facing the second circuit board, and the second terminal is connected to the second circuit board through the second solder leg.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is easy to see that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a structural diagram of a connector according to an embodiment of the present invention before being inserted;

FIG. 2 is another block diagram of a connector according to an embodiment of the present invention before being inserted;

fig. 3 is a structural diagram of a connector socket according to an embodiment of the present invention;

FIG. 4 is another block diagram of a connector mating according to an embodiment of the present invention;

fig. 5 is a structural view of a first base and a first terminal according to an embodiment of the present invention;

fig. 6 is another structural view of the first base and the first terminal according to the embodiment of the present invention;

fig. 7 is a structural view of a second base and a second terminal according to an embodiment of the present invention;

fig. 8 is another structural view of a second base and a second terminal according to an embodiment of the present invention;

fig. 9 is a structural diagram of a first terminal according to an embodiment of the present invention;

fig. 10 is another structural diagram of a first terminal according to an embodiment of the present invention;

FIG. 11 is a sectional view taken along line A-A of FIG. 6;

FIG. 12 is a sectional view taken along line B-B of FIG. 6;

fig. 13 is a structural view of a second terminal according to an embodiment of the present invention;

fig. 14 is another structural view of a second terminal according to an embodiment of the present invention;

FIG. 15 is a sectional view taken along line A-A of FIG. 8;

FIG. 16 is a sectional view taken along line B-B of FIG. 8;

FIG. 17 is a sectional view taken along line A-A of FIG. 3;

FIG. 18 is a sectional view taken along line B-B of FIG. 3;

fig. 19 is a structural diagram of a first solder tail and a spring plate according to an embodiment of the present invention;

FIG. 20 is a cross-sectional view taken along line A-A of FIG. 4 in accordance with an embodiment of the present invention;

fig. 21 is a structural diagram of a second fillet according to an embodiment of the present invention.

Description of reference numerals:

100: a first base;

110: a first boss;

120: a second boss;

130: a first terminal;

130 a: a first signal connection portion;

130 b: a first current connection portion;

130 c: a fixed part;

131: a first inner positive terminal;

132: a first inner negative terminal;

133: a first inner signal terminal;

134: a first outer positive terminal;

135: a first outer negative terminal;

136: a first outer signal terminal;

137: a first solder tail;

140: a spring plate;

150: an opening;

200: a second base;

210: a first groove;

220: a second groove;

221: an inner tank wall;

222: an outer tank wall;

230: a second terminal;

230 a: a second signal connection portion;

230 b: a second current connection portion;

231: a second inner positive terminal;

232: a second inner negative terminal;

233: a second inner signal terminal;

234: a second outer positive terminal;

235: a second external negative terminal;

236: a second external signal terminal;

2371: a second auxiliary positive terminal;

2372: a second auxiliary negative terminal;

238: a second solder tail.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The BTB connector can be used for connecting components such as a display screen, a touch screen, a camera and a battery with a mainboard. For example, a BTB connector can be used for connection between a battery and a motherboard to realize fast-charging current transmission of an electronic device, and it is important for fast charging to improve the current transmission capability of the connector.

In the related art, the connector may include a first base and a second base that are relatively inserted, a protrusion is disposed on one side of the first base, and a first terminal is disposed on a sidewall of the protrusion. A concave part is arranged on one side of the second base, and a second terminal is arranged on the side wall of the concave part. The first terminal on the side wall of the convex part and the second terminal on the side wall of the concave part are connected in an abutting mode when the concave part is inserted into the convex part, and therefore current transmission is achieved. During current transmission, the current heating effect is intensified due to excessive current. The current heating effect can be reduced by lowering the contact resistance of the connector, which is affected by the abutting area and the contact pressure between the first terminal and the second terminal. The contact resistance is lower as the contact area and the contact pressure between the first terminal and the second terminal are larger.

However, in order to achieve the abutment, the first terminal and the second terminal need to be provided on the side walls of the concave portion and the convex portion. The smaller side wall areas of the concave and convex portions result in smaller areas of the first and second terminals and smaller abutting areas between the first and second terminals, resulting in higher impedance between the first and second terminals and higher BTB connector temperature. The battery pack operates in a high-temperature environment for a long time, and the performance of the battery pack is affected. For example, it may cause a decrease in the capacity of the battery, accelerate the aging of the battery, even cause the explosion of the battery due to combustion, etc.

For example, the contact area between the terminals can be increased by providing a plurality of connectors, thereby reducing heat generation of a single connector. However, the plurality of connectors occupy a large volume, and do not take advantage of the miniaturization of the battery assembly. It should be noted that, since the solid surface is always uneven, the contact between the first terminal and the second terminal is usually achieved by pressing the contact points against each other in order to achieve effective contact between the first terminal and the second terminal.

In order to solve the above problems, the present embodiment provides a connector and a battery assembly, wherein at least one second boss is annularly disposed on an outer side of a first boss of a first base, at least one second groove is annularly disposed on an outer side of a first groove of a second base, the first boss and the first groove are inserted, and the second boss and the second groove are inserted. Like this, increased and to have set up the side wall area of first terminal and second terminal on first base and the second base, the area of first terminal and second terminal can increase to increase the butt area between first terminal and the second terminal, reduce the contact resistance between first terminal and the second terminal, reduce the temperature of connector, guarantee battery pack's performance.

As shown in fig. 1 to 4, the present embodiment provides a connector including a first base 100 and a second base 200, and the first base 100 and the second base 200 are relatively inserted together. The first base 100 is provided with a first terminal 130, the second base 200 is provided with a second terminal 230, and the first terminal 130 and the second terminal 230 are abutted together when the first base 100 and the second base 200 are plugged together, so as to realize transmission of signals and current. The first terminals 130 and the second terminals 230 may be abutted in a one-to-one correspondence, and the first base 100 and the second base 200 are made of an insulator material.

In fig. 1, the X direction is the extending direction of the first base 100, and is also the longitudinal direction of the first base 100, and the extending direction of the first base 100 coincides with the second base 200 and the connector; the Y direction is the width direction of the first base 100, and the width direction of the first base 100 is the same as the width directions of the second base 200 and the connector; the Z direction is a thickness direction of the first base 100, and the thickness direction of the first base 100 coincides with the thickness direction of the second base 200 and the connector.

As shown in fig. 5 to 8, a first boss 110 is disposed on a side surface of the first base 100, and at least one second boss 120 is annularly disposed outside the first boss 110. A first groove 210 is formed on one side surface of the second base 200, at least one second groove 220 is formed around the outer side of the first groove 210, the first boss 110 is inserted into the first groove 210, and the second boss 120 is inserted into the second groove 220. The number of the second bosses 120 and the second grooves 220 may be equal, and the second bosses 120 and the second grooves 220 are arranged in a one-to-one correspondence. In other examples, the number of second bosses 120 may be one more than the number of second grooves 220.

The present embodiment is explained in the case that the number of the second bosses 120 and the number of the second grooves 220 are equal.

The first terminal 130 is provided on each of the side walls of the first boss 110 and the second boss 120 in the thickness direction of the first base 100, the second terminal 230 is provided on each of the side walls of the first recess 210 and the second recess 220 in the thickness direction of the second base 200, and the first terminal 130 and the second terminal 230 abut against each other.

Since the first terminal 130 may be disposed on the sidewall of the second boss 120 in addition to the first terminal 130 may be disposed on the sidewall of the first boss 110, the area of the first terminal 130 may be increased. The second boss 120 can be provided by adding a little volume to the outside of the first boss 110, and the structure is compact.

In addition, in addition to the second terminal 230 may be provided on the sidewall of the first groove 210, the second terminal 230 may be provided on the sidewall of the second groove 220, and the area of the second terminal 230 may be increased. Thus, the areas of the first and second terminals 130 and 230 may be increased to increase the abutting area between the first and second terminals 130 and 230, thereby reducing the contact resistance between the first and second terminals 130 and 230, lowering the temperature of the connector, and ensuring the performance of the battery assembly.

As an implementation manner of the second boss 120 and the second groove 220, the second boss 120 may be an annular structure, at least two second bosses 120 are annularly disposed on the outer side of the first boss 110, and the at least two second bosses 120 are sequentially sleeved inside and outside and are disposed at intervals.

The second grooves 220 may be annular structures, at least two second grooves 220 are annularly disposed on the outer side of the first groove 210, and the at least two second grooves 220 are sequentially sleeved inside and outside and are disposed at intervals.

One of the second bosses 120 is inserted into one of the second grooves 220, and after the sidewalls of the second bosses 120 and the sidewalls of the second grooves 220 are inserted, the first terminals 130 on the second bosses 120 and the second terminals 230 on the second grooves 220 are pressed against each other to be abutted together, so as to realize transmission of current, signals and the like. In addition, the first terminal 130 on the first boss 110 and the second terminal 230 on the first groove 210 are pressed against each other and abutted together to realize transmission of current, signals and the like. The larger the number of the second grooves 220 and the second lands 120, the larger the area of the first terminals 130 and the second terminals 230, the larger the abutting area between the first terminals 130 and the second terminals 230, and the smaller the contact resistance between the first terminals 130 and the second terminals 230.

As another implementation of the second lands 120 and the second grooves 220, as shown in fig. 5 and 7, the number of the second lands 120 and the second grooves 220 is one. A second boss 120 is surrounded outside the first boss 110, and a second recess 220 is surrounded outside the first recess 210. The number of the second grooves 220 and the second bosses 120 is not limited in the present embodiment.

The present embodiment is described with the number of the second grooves 220 and the second bosses 120 being one.

For example, the connector is used to connect a battery and a motherboard, and since the battery has positive and negative electrodes, terminals on the connector also have positive and negative electrodes to transmit current. For example, in fig. 9, one end of the connector may be provided with a positive terminal and the other end may be provided with a negative terminal in the X direction. Or, positive and negative terminals are respectively arranged at two ends of the connector along the Y direction. Correspondingly, the first terminals 130 disposed on the first base 100 can be divided into positive and negative terminals. The second terminals 230 provided on the second base 200 are also divided into positive and negative terminals. The terminals located on the first boss 110 and the first groove 210 are inner-side terminals, and the terminals located on the second boss 120 and the second groove 220 are outer-side terminals.

The positive terminal on the first boss 110 is a first inner positive terminal 131, the negative terminal on the first boss 110 is a first inner negative terminal 132, the positive terminal on the second boss 120 is a first outer positive terminal 134, and the negative terminal on the second boss 120 is a first outer negative terminal 135. Correspondingly, disposed in the first recess 210 are a second inner negative terminal 232, a second inner positive terminal 231, and disposed in the second recess 220 are a second outer negative terminal 235, and a second outer positive terminal 234. Wherein the various positive terminals collectively form the positive terminal of the connector and the various negative terminals collectively form the negative terminal of the connector. The number of the various terminals is at least one, for example, the number of the first inner positive terminal 131 may be 1, 2, 3, 4, and the like, and the number of the first inner positive terminal 131 is not limited in this embodiment. The principle of each other terminal is similar, and the description is omitted.

Here, the first outer negative terminal 135 and the first outer positive terminal 134 are collectively referred to as a first outer terminal, and the first inner positive terminal 131 and the first inner negative terminal 132 are collectively referred to as a first inner terminal. The second inner negative terminal 232, the second inner positive terminal 231, and the second outer negative terminal 235, and the second outer positive terminal 234, are collectively referred to as a second inner terminal, and a second outer terminal.

This embodiment will be described by taking an example in which positive and negative terminals are provided at both ends in the X direction, respectively.

Specifically, as shown in fig. 9 and 10, the first terminal 130 on the first boss 110 includes two first inner positive terminals 131, two first inner negative terminals 132, and four first inner signal terminals 133. The signal terminal can be used for transmitting data information such as the voltage of the battery. The number of the first inner signal terminals 133 may be at least one, and the number of the first inner signal terminals 133 may be 1, 2, 3, 4, etc., without limitation to the number of the first inner signal terminals 133.

As shown in fig. 9, the first terminal 130 on the second boss 120 includes two first outer positive terminals 134, two first outer negative terminals 135, and four first outer signal terminals 136. The two first inner positive terminals 131 and the two first outer positive terminals 134 are connected in one-to-one correspondence, and the two first inner negative terminals 132 and the two first outer negative terminals 135 are connected in one-to-one correspondence. The four first inner signal terminals 133 and the four first outer signal terminals 136 are connected in a one-to-one correspondence.

For example, in fig. 11, the first inner signal terminal 133 and the first outer signal terminal 136 are connected together to form a bump structure (the portion enclosed by the dotted line in fig. 11 is a bump structure), which is also called as the first signal connection portion 130a, and the bump structure has a certain elastic deformation capability, and can be used for the signal terminal of the second terminal 230 to extend into and clamp the signal terminal extending into the bump structure.

As shown in fig. 12, a first inner positive terminal 131 and a first outer positive terminal 134 (a portion enclosed by a dotted line in fig. 12 is a bump structure), and a bump structure may also be formed between the first inner negative terminal 132 and the first outer negative terminal 135, where the bump structure is also called a first current connection portion 130b, and the principle thereof is similar to that of the first signal connection portion 130a, and is not repeated.

Here, the first outer negative terminal 135 and the first outer positive terminal 134 may extend from a wall surface of the second boss 120 facing a side of the first boss 110 to a wall surface of the second boss 120 facing away from the side of the first boss 110. For example, the first outer negative terminal 135 and the first outer positive terminal 134 may be provided on each of the inner wall, the top wall, and the outer wall of the second boss 120, so that the first outer terminal is provided over a large area.

As shown in fig. 13 and 14, the second terminals 230 on the first groove 210 include two second inner positive terminals 231, two second inner negative terminals 232, and four second inner signal terminals 233. The second groove 220 includes an inner groove wall 221 proximate to the first groove 210 and an outer groove wall 222 distal from the first groove 210 (in fig. 7), and the second terminals 230 on the inner groove wall 221 include two second outer positive terminals 234, two second outer negative terminals 235 and four second outer signal terminals 236. The two second inner positive terminals 231 and the two second outer positive terminals 234 are connected in a one-to-one correspondence, and the two second inner negative terminals 232 and the two second outer negative terminals 235 are connected in a one-to-one correspondence; the four second inner signal terminals 233 and the four second outer signal terminals 236 are connected in one-to-one correspondence. In addition, the second terminals 230 on the outer slot walls 222 (in fig. 7) include a second auxiliary positive terminal 2371 and a second auxiliary negative terminal 2372. The second auxiliary positive terminal 2371 is adapted to abut against the first outer positive terminal 134 located on the side of the second boss 120 away from the first boss 110. The second auxiliary negative electrode terminal 2372 is adapted to abut against the first outer negative electrode terminal 135 located on the side of the second boss 120 away from the first boss 110.

It should be noted that in this embodiment, the number of the second inner signal terminals 233, the second outer signal terminal 236, the second auxiliary positive terminal 2371, and the second auxiliary negative terminal 2372 is at least one, for example, the number of the second inner signal terminals 233 may be 1, 2, 3, or 4, and this embodiment does not limit the number of the second inner signal terminals 233. The principle of other terminals is similar and will not be described in detail.

As shown in fig. 15, the second inner signal terminal 233 and the second outer signal terminal 236 are connected together to form a bump structure (the portion encircled by the dotted line in fig. 15 is a bump structure), which is also called as the second signal connecting portion 230a, and the bump structure has a certain elastic deformation capability, can extend into the bump structure of the first signal connecting portion 130a, and can abut against the first signal connecting portion 130 a. In addition, since the connection portion between the second inner signal terminal 233 and the second outer signal terminal 236 makes the two have the same potential, the connection portion also increases the area of the two to increase the heat dissipation area of the two, which is beneficial to heat dissipation.

As shown in fig. 16, a second inner positive terminal 231 and a second outer positive terminal 234 (a portion encircled by a dotted line in fig. 16 is a bump structure), a bump structure may also be formed between the second inner negative terminal 232 and the second outer negative terminal 235, and the bump structure is also called a second current connection portion 230b, which has a similar principle to that of the second signal connection portion 230a and is not described again.

As shown in fig. 17, the second signal connection portion 230a is inserted into the first signal connection portion 130a and abuts against the first signal connection portion 130 a. In order to increase the contact pressure between the second signal connection portion 230a and the first signal connection portion 130a, a portion of the structure on the first signal connection portion 130a may be bent to form a bent section, the bent section on the first signal connection portion 130a is protruded toward a portion abutting against the second signal connection portion 230a, and the bent section is protruded to press the second signal connection portion 230a, so as to increase the contact pressure between the second signal connection portion 230a and the first signal connection portion 130a, thereby reducing the contact resistance. In other embodiments, the bending section may also be disposed on the second signal connection portion 230a, and the principle is similar and will not be described again.

Specifically, the bent sections of the first signal connecting portion 130a may be disposed on the first outer signal terminal 136, the first inner signal terminal 133 and the connecting region therebetween (as shown in fig. 11). In this way, the first signal connection portion 130a is provided with three bent sections, so that the abutting area between the second signal connection portion 230a and the first signal connection portion 130a is large, thereby reducing the contact resistance.

In other examples, a matching bent section that matches the bent section of the first signal connection portion 130a may be further disposed on the second signal connection portion 230a, so as to further increase the contact pressure and the abutting area between the first signal connection portion 130a and the second signal connection portion 230a, and reduce the contact resistance.

It should be noted that at least one of the first signal connecting portion 130a and the second signal connecting portion 230a may be provided with a bent section. For example, the bent sections may be disposed on at least one of the first outer signal terminal 136, the first inner signal terminal 133 and the connecting region therebetween, and the number of the bent sections is not limited in this embodiment.

As shown in fig. 18, the second current connecting portion 230b is inserted into the first current connecting portion 130b and abuts against the first current connecting portion 130 b. The first current connecting portion 130b and the second current connecting portion 230b may also be provided with a bent section to increase the contact pressure and the contact area of the two, and the principle thereof is as the first signal connecting portion 130a and the second signal connecting portion 230a, which is not described again.

It should be noted that, in other examples, the bending section may be replaced by a convex structure, such as a convex ball, a pointed tip, a convex table, and the like.

The first signal connection portion 130a and the first current connection portion 130b are collectively referred to as a first connection portion, the bending sections disposed on the first connection portion are collectively referred to as a first bending section, the second signal connection portion 230a and the second current connection portion 230b are collectively referred to as a second connection portion, and the bending sections disposed on the second connection portion are collectively referred to as a second bending section.

As shown in fig. 17, a fixing portion 130c is disposed on a side of the first signal connecting portion 130a away from the first boss 110, and the fixing portion 130c is fixed in the first base 100, so that the signal terminal of the first terminal 130 is stably connected to the first base 100. One end of the fixing portion 130c is connected to the first signal connecting portion 130 a.

The first terminal 130 and the second terminal 230 may be fixed to the base by injection molding, plugging, clipping, etc.

In this embodiment, as shown in fig. 19, the first terminal 130 or the second terminal 230 is provided with a spring piece 140. The elastic sheet 140 has elastic deformation capability, so that the first terminal 130 and the second terminal 230 can be pressed against each other after the first base 100 and the second base 200 are inserted, and a stronger contact pressure is formed, so that the first base 100 and the second base 200 are tightly inserted.

Specifically, the first terminal 130 or the second terminal 230 is provided with an opening 150, and the elastic piece 140 is located in the opening 150.

For example, as shown in fig. 19, at least one opening 150 is disposed on the first terminal on a side of the second boss 120 facing away from the first boss 110, and the resilient piece 140 is disposed in the opening 150. The elastic sheet 140 and the first terminal may be integrally formed and welded. The elastic sheet 140 is avoided at the opening 150, so that more deformation space can be provided for the elastic sheet 140, and the elastic sheet 140 can provide larger contact pressure.

The number of the elastic pieces 140 may be 1, 2, 3, 4, etc., and the number of the elastic pieces 140 is not limited in this embodiment. For example, in fig. 19, in the X direction, three openings 150 are provided for one first outer positive terminal 134; in the Y direction, one opening 150 is provided in one first outer positive terminal 134, which corresponds to four openings 150 provided in one first outer positive terminal 134, and the spring pieces 140 are provided in all four openings 150. The first external negative terminal 135 is similarly disposed, and thus, will not be described in detail. Because of having more shell fragment 140, formed great contact pressure and butt area, be favorable to reducing contact resistance.

In other embodiments, the resilient tab 140 between the first terminal 130 and the second terminal 230 may be replaced by a convex structure, such as a convex ball, a pointed tip, a convex boss, etc. For example, in the portion encircled by the dotted line in fig. 20, a protruding structure, the elastic sheet 140 or a bent section is disposed between the first terminal 130 and the second terminal 230 to increase the contact pressure and the abutting area of the two, which is beneficial to reducing the contact resistance.

In some examples, the spring plate 140 may be provided with a protruding structure to make the contact pressure between the terminal abutting against the spring plate 140 and the spring plate 140 greater, and the protruding structure is located on a side of the spring plate 140 facing the terminal abutting against the spring plate 140.

Since the terminal for transmitting power needs to carry a large current, the volume and contact area of the terminal for transmitting power can be larger than those of the terminal for transmitting signals.

In addition, the present embodiment also provides a battery pack including a first circuit board and a second circuit board (not shown) and the connector of the above embodiment, wherein the first terminal 130 of the connector is electrically connected to the first circuit board, and the second terminal 230 of the connector is electrically connected to the second circuit board.

The first circuit board can be connected with the mainboard, the second circuit board can be connected with the battery, and the connector realizes connection between the mainboard and the battery through the first circuit board and the second circuit board.

As shown in fig. 19 and 21, the first terminal 130 has a first solder tail 137, and the second terminal 230 has a second solder tail 238. The first and second solder fillets 137, 238 are disposed on opposite sides of the mating surfaces of the first and second bases 100, 200. The first circuit board and the second circuit board may be respectively located at two opposite sides of the connector, a first solder leg 137 is disposed at a side of the first terminal 130 facing the first circuit board, the first terminal 130 is connected to the first circuit board through the first solder leg 137, a second solder leg 238 is disposed at a side of the second terminal 230 facing the second circuit board, and the second terminal 230 is connected to the second circuit board through the second solder leg 238.

It should be noted that each independent terminal needs to be provided with a solder tail to enable the terminal to be connected with a circuit board, the number of the solder tails that each independent terminal can be provided with is at least one, and the number of the solder tails that each independent terminal can be provided with is not limited in this embodiment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.