CN215680885U - Output pole protection support and battery pack - Google Patents

Abstract

The utility model provides an output electrode protection support and a battery pack. The output electrode protection support comprises a support body and a pin, wherein at least one first through hole is formed in the support body, a clamping piece is connected to the bottom surface of the support body, a second through hole communicated with the first through hole is formed in the clamping piece, and at least one elastic limiting structure used for fixing the support body is arranged at the lower part of the clamping piece; the pin can pass first through-hole and insert the second through-hole, and the external diameter of pin is greater than the internal diameter of second through-hole, and under the state that the pin inserted in the second through-hole, elasticity limit structure expanded along the radial outside of joint spare. The output electrode protection support disclosed by the utility model adopts an expansion clamping type principle, so that the problems of no limit in the height direction and failure and looseness of interference fit in the prior art can be solved, and the output electrode protection support is more stable; the battery pack using the output pole protection support can prolong the service life of the battery pack.

Description

Output pole protection support and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to an output electrode protection support and a battery pack using the same.

Background

In the prior art, the output pole protection support of the battery pack needs to be inserted into the cross beam and fixedly connected with the cross beam through interference fit. Because the cavity direction of the beam is perpendicular to the plugging and unplugging direction of the output pole protective support, the depth of the interference fit part of the beam is small, and the fixation is not firm.

In addition, because the direction of height that output utmost point protective support and crossbeam are fixed does not have spacing characteristic, only rely on interference fit to fix it, in case the cooperation is not hard up, can cause the busbar to draw forth the end and appear rocking in the vibration, fatigue failure even.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that an output electrode protective support is not limited in height direction, loose due to interference fit failure and short in service life.

To achieve the above object, the present invention provides an output electrode protection support, comprising:

the support comprises a support body, a first connecting piece and a second connecting piece, wherein at least one first through hole is formed in the support body, a clamping piece is connected to the position, corresponding to the first through hole, of the bottom surface of the support body, a second through hole communicated with the first through hole is formed in the clamping piece, and at least one elastic limiting structure used for fixing the support body is arranged at the lower part of the clamping piece;

the pin can penetrate through the first through hole and is inserted into the second through hole, the outer diameter of the pin is larger than the inner diameter of the second through hole, and the elastic limiting structure expands outwards along the radial direction of the clamping piece in the state that the pin is inserted into the second through hole.

Compared with the prior art, the utility model has the following advantages:

the output electrode protection support disclosed by the utility model applies an expansion clamping principle, realizes a function of lasting limitation in the height direction through the clamping piece, and solves the problems of failure, looseness and the like caused by interference fit; in addition, limit structure conveniently dismantles the pin, is convenient for change output utmost point protective support.

Another object of the present invention is to provide a battery pack including the above output pole protection holder, so as to improve the service life and stability of the battery pack.

To achieve the above object, the present invention further provides a battery pack, comprising:

the output electrode protection support;

and the bus bar leading-out end is embedded at the top of the support body of the output electrode protection support in a separable manner, and the top surface of the pin abuts against the bus bar leading-out end.

Compared with the prior art, the battery pack has the following advantages:

the battery pack has the output electrode protection support, so that the battery pack has all the advantages of the output electrode protection support, and after the output electrode protection support is applied, the battery pack has the advantages of stable performance and long service life.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1 is a schematic perspective view of an output pole protective support of the present invention;

FIG. 2 is an exploded view of the output pole shield mount of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the output pole shield mount of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the output pole shield mount of FIG. 3 with a pin removed;

FIG. 5 is a schematic illustration of the structure of FIG. 3 with the pins removed from the output pole shield mount;

fig. 6 is a partial structural view of the battery pack of the present invention before assembly;

fig. 7 is a schematic view of the assembled battery pack of the present invention;

fig. 8 is a schematic view of an assembly structure of the battery pack and the end plate shown in fig. 7.

Wherein, in the figures, the respective reference numerals:

10. an output electrode protection support;

11. a support body; 111. a first through hole; 1111. a first bore section; 1112. a second bore section; 112. sinking a groove; 113. a first chamfer; 114. a water drainage through groove; 115. a second chamfer; 116. a limiting bulge;

12. a clamping piece; 121. a second through hole; 122. a claw; 123. a third chamfer;

13. a pin; 131. a limiting part;

14. a battery pack; 141. an end plate; 1411. a limiting hole; 142. a bus bar leading-out terminal;

15. and (5) disassembling the tool.

Detailed Description

The present application is described in further detail below with reference to the figures and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other.

Example 1

In practical application in the battery field, the battery pack is often composed of an output electrode protection support and a cross beam (end plate), the cross beam (end plate) is used as a counter-hand piece of the output electrode protection support, and the output electrode protection support is connected with the cross beam (end plate) in a matched mode.

As shown in fig. 1 to 5, the present embodiment provides an output electrode protection holder, which includes a holder body 11, a clamping member 12, and a pin 13, wherein:

the support body 11 is provided with at least one first through hole 111, preferably, the support body 11 is provided with two first through holes 111 arranged at intervals, the first through holes 111 penetrate through the support body 11 from top to bottom, the positions of the bottom surface of the support body 11 corresponding to the first through holes 111 are respectively connected with one clamping piece 12, that is, the bottom surface of the support body 11 is connected with two clamping pieces 12 arranged at intervals; the clamping piece 12 is provided with a second through hole 121 communicated with the first through hole 111, the lower part of the clamping piece 12 is circumferentially provided with an elastic limiting structure, preferably, the elastic limiting structure is a clamping jaw 122, and the four clamping jaws 122 are all arranged elastically and at equal intervals; during the use, pin 13 passes first through-hole 111 and inserts in second through-hole 121 from top to bottom, and the external diameter of pin 13 is greater than the internal diameter of second through-hole 121, and when pin 13 inserted in second through-hole 121, jack catch 122 received the stress that comes from pin 13 and outwards expands along the radial of joint spare 12, when the end plate of cooperation group battery used, can block with the end plate of group battery after the jack catch 122 expansion to realize the spacing along direction of height of output pole protection support 10.

As shown in fig. 4, the first through hole 111 includes a first hole section 1111 and a second hole section 1112 that are sequentially connected from top to bottom, and an inner diameter of the first hole section 1111 is larger than an inner diameter of the second hole section 1112; that is, the first through hole 111 is a stepped hole, and a stepped surface is formed between the first hole section 1111 and the second hole section 1112, so as to facilitate the assembly and disassembly of the pin 13.

Referring to fig. 2, 3, 4 and 5, the top surface of the pin 13 is provided with a limiting part 131, the outer diameter of the limiting part 131 is larger than the inner diameter of the second hole section 1112, the outer diameter of the limiting part 131 is smaller than the inner diameter of the first hole section 1111, and at least a part of the limiting part 131 is located in the first hole section 1111; during the use, after the pin 13 passes through the first through hole 111 and is inserted into the second through hole 121, the limiting portion 131 abuts on the stepped surface formed between the first hole section 1111 and the second hole section 1112 to realize limiting, preferably, the limiting portion 131 is immersed in the first hole section 1111, that is, the vertical height of the limiting portion 131 is smaller than that of the first hole section 1111, so as to avoid the pin 13 from influencing the connection between the support body 11 and other parts.

In this embodiment, in order to facilitate the dismantlement of pin 13, be provided with heavy groove 112 on the ladder face that forms between first hole section 1111 and the second hole section 1112, heavy groove 112 is the rectangle recess that sets up on the ladder face, the width of rectangle recess is less than the external diameter of spacing portion 131, and the width of rectangle recess is greater than the external diameter of pin 13, dismantle frock 15 can stretch into in the rectangle recess with the spacing portion 131 of centre gripping, during the use, dismantle frock 15 can stretch into the heavy groove 112 that predesigns, upwards extract support body 11 with pin 13, thereby make the dismouting of pin 13 become simple and convenient.

Further, support body 11 and joint spare 12 formula structure as an organic whole, it is concrete, support body 11 and joint spare 12 can adopt modes integrated into one piece such as moulding plastics or punching press for such structural design for joint spare 12 is more stable also difficult damage with being connected of support body 11.

Further, the joint of the support body 11 and the clamping member 12 is provided with a first chamfer 113 to avoid the risk of fracture of the clamping member 12 due to stress concentration in the use process.

In practical use, when the inner diameter of the first through hole 111 is larger than the inner diameter of the second through hole 121, and the pin 13 is inserted into the second through hole 121 through the first through hole 111 downward, there is a risk that the pin 13 is scratched by a step surface formed at the joint of the two through holes, which affects the expansion capability and range of each jaw 122 of the clamping member 12, and further affects the fastening reliability of the output electrode protection support 10 with the external end plate, and therefore, the joint of the first through hole 111 and the second through hole 121 is provided with the second chamfer 115 to avoid the problem that the pin 13 is scratched.

Further, considering that the output electrode protection support 10 may be not tightly attached to an end plate of an external component, so that the flatness of the bottom of the output electrode protection support 10 cannot be ensured, in this embodiment, a limiting protrusion 116 is further disposed on the bottom surface of the support body 11, the limiting protrusion 116 can improve the flatness of the bottom surface of the support body 11, and the limiting protrusion 116 can suspend the first chamfer 113 at the joint of the support body 11 and the clamping member 12, so that the output electrode protection support 10 is more stably connected to the external component; the size, number, distribution position, shape and the like of the limiting protrusions 116 can be set according to actual needs, and the purpose of smooth fitting after the bottom surface of the support body 11 and the end plate are assembled is only needed.

Further, in order to avoid the safety problem caused by the accumulated water inside the output pole protection support 10, in this embodiment, as shown in fig. 2 and fig. 4, a drainage through groove 114 is arranged on the top surface of the support body 11, specifically, the drainage through groove 114 is located on one side of the first through hole 111, and the water inside the output pole protection support 10 can be discharged through the drainage through groove 114.

Further, to prevent the output pole protection support 10 from interfering during the installation process, as shown in fig. 4, the claw 122 is provided with a third chamfer 123 at an end facing away from the bottom of the support body 11.

Example 2

As shown in fig. 7, the present invention further provides a battery pack 14, wherein the battery pack 14 includes the above-mentioned output electrode protection support 10, and further includes an end plate 141 and a bus bar leading-out terminal 142 (as shown in fig. 8), wherein the end plate 141 is provided with two limiting holes 1411, and the clamping member 12 of the output electrode protection support 10 can pass through the limiting holes 1411 and can be clamped with the end plate 141; the bus bar leading-out end 142 can be connected to the output electrode protection support 10 in a separating mode, and the top surface of the limiting portion 131 abuts against the bottom surface of the bus bar leading-out end 142 to prevent the pin 13 from reversely withdrawing upwards, so that the installation reliability of the output electrode protection support 10 is further guaranteed.

When in use, the clamping piece 12 at the bottom of the output electrode protection support 10 in a natural state is inserted into the two circular limiting holes 1411 (see fig. 6) which are coupled with the end plate 141; the stop condition of the insertion process is that the limiting bulge 116 at the bottom of the output electrode protection support 10 touches the upper surface of the end plate 141; then, the pin 13 penetrates through the first through hole 111 of the support body 11 and is vertically inserted into the second through hole 121 of the clamping piece 12, and the stop condition of the insertion action is that the lower surface of the limiting part 131 touches a limiting surface (namely, a step surface of the second hole section 1112 and the first hole section 1111) designed on the support body 11; due to the special design of the clamping piece 12, the inner diameter of the first through hole 111 is larger than that of the second through hole 121, and the difference value of the inner diameters is preferably 1 mm-2 mm, so that after the pin 13 is inserted in place, the claw 122 of the clamping piece 12 is expanded by the pin 13, the output electrode protection support 10 cannot be freely separated from the end plate 141, and at the moment, the output electrode protection support 10 is firmly installed.

Of course, what should be noted is:

the above-mentioned output electrode protection holder 10 can also be used in a battery module and a battery pack, and will not be described herein.

The output pole protection support 10 is a protection device for the output end of information such as voltage and temperature of the battery pack, and is used for protecting or fixing the output end, and the output end can be connected with the output ends of other battery packs and can also directly transmit the information to the total output end of the battery pack.

The elastic limiting structure is not limited to the claw 122 in the embodiment, and can be a sleeve, a ring or other structures as long as the elastic limiting structure can play a role in fixing the output electrode protective support 10 along the radial outward expansion of the clamping piece after the interference insertion of the pin 13 is met.

The number, position, size and other parameters of the first through holes 111 and the clamping members 12 formed on the support body 11 are determined according to practical situations, and the embodiments are merely provided for preference and are not limited to the embodiments.

The angles of the first chamfer 113, the second chamfer 115 and the third chamfer 123 are preferably 45 ° or 60 °, however, in actual use, the angles, sizes and the like of the chamfers can be designed according to needs, and are not limited to a certain parameter or form.

The inner diameter of the first through hole 111 is preferably larger than the outer diameter of the pin 13 to allow the pin 13 to be more easily inserted into the second through hole 121, and the pin 13 is preferably an elastic pin.

The position-limiting portion 131 is preferably recessed into the first hole section 1111 so that the end plate 141 is more stably mounted on the holder body 11, but of course, the position-limiting portion 131 may be only partially immersed in the first hole section 1111.

The opening depth of the sinking groove 112 can be set according to the actual requirements of the processing technology, the processing cost and the like, as long as the functions of the dismounting tool 15 capable of extending into the bottom surface of the limiting part 131, pulling out the pin 13 and replacing the output electrode protection support 10 can be satisfied.

The number and shape of the limiting holes 1411 formed in the end plate 141 are not limited to those of the embodiment, and the requirements of the limiting holes 1411 and the fixing and clamping of the clamping piece 12 can be met during use.

As a possible design, the support body 11 and the limiting protrusion 116 may be fixedly connected or detachably connected, and the connection manner is not limited to heat riveting, welding, integral molding or threaded connection.

In summary, the output electrode protection support is provided with the clamping piece on the bottom surface and the clamping jaw on the clamping piece, and the clamping piece is expanded outwards by the action force of the pin acting on the clamping jaw by utilizing the expansion clamping principle, so that the output electrode protection support is fixed with an external component (such as an end plate);

the output electrode protection support avoids the problems of no limit in the height direction, swinging of a bus bar leading-out end in vibration, even fatigue failure and the like after the output electrode protection support is assembled with an end plate.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner" and "outer" indicate orientations or positional relationships based on an operation state of the present application, and are only used for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "embedded" are to be construed broadly unless otherwise explicitly specified or limited. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present application has been described above with reference to preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the present application can be subjected to various substitutions and improvements, and the substitutions and the improvements are all within the protection scope of the present application.

Claims (10)

1. An output pole guard support, comprising:

the support comprises a support body, a first connecting piece and a second connecting piece, wherein at least one first through hole is formed in the support body, a clamping piece is connected to the position, corresponding to the first through hole, of the bottom surface of the support body, a second through hole communicated with the first through hole is formed in the clamping piece, and at least one elastic limiting structure used for fixing the support body is arranged at the lower part of the clamping piece;

the pin can penetrate through the first through hole and is inserted into the second through hole, the outer diameter of the pin is larger than the inner diameter of the second through hole, and the elastic limiting structure expands outwards along the radial direction of the clamping piece in the state that the pin is inserted into the second through hole.

2. The output pole guard support according to claim 1, wherein two first through holes are symmetrically disposed on the support body.

3. The output pole guard support of claim 1, wherein the resilient limiting structure is a pawl.

4. The output pole guard support according to any one of claims 1 to 3, wherein the first through hole comprises a first hole section and a second hole section which are sequentially communicated from top to bottom, and an inner diameter of the first hole section is larger than an inner diameter of the second hole section.

5. The output pole protective support of claim 4, wherein the top surface of the pin is provided with a limiting portion, the outer diameter of the limiting portion is larger than the inner diameter of the second hole section, the outer diameter of the limiting portion is smaller than the inner diameter of the first hole section, and at least a portion of the limiting portion is located in the first hole section.

6. An output pole guard support as claimed in claim 4, wherein a sink is provided on the stepped surface formed between the first bore section and the second bore section.

7. The output pole protective bracket according to any one of claims 1 to 3, wherein the bracket body and the clamping member are of an integral structure.

8. The output pole protective bracket according to any one of claims 1 to 3, wherein a first chamfer is provided at a joint of the bracket body and the snap-in member.

9. An output pole guard support according to any of claims 1 to 3, wherein a second chamfer is provided at the junction of the first and second through holes.

10. A battery pack, characterized in that the battery pack comprises:

an output pole guard support as claimed in any one of claims 1 to 9;

and the bus bar leading-out end is embedded at the top of the support body of the output electrode protection support in a separable manner, and the top surface of the pin abuts against the bus bar leading-out end.

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