Adapter piece, battery and electric equipment
By designing an adapter with an intermediary area and a concave position that increases the resistance value of the adapter and insufficient overcurrent capability in the prior art is solved, and stronger overcurrent capability and weight reduction effects are achieved.
Patent Information
- Application Number
- CN202420643424.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The shape of the existing adapter is unreasonable, resulting in an increase in resistance value and the inability to reduce weight while meeting the overcurrent capability, and there is room for improvement.
An adapter is designed, wherein the first and second regions arranged at intervals along the first direction are used for electrical connection with the pole ear, and the third region is used for electrical connection with the pole column. The widths of the first intermediary area and the second intermediary area are increased first and then decreased, forming a recess at a concave position to reduce weight and improve overcurrent capacity.
By optimizing the shape and structure of the adapter blade, the overcurrent capability is improved, and the resistance value is reduced while maintaining or reducing weight, the problem of increasing resistance value of the adapter blade and insufficient overcurrent capability in the prior art is solved.
Smart Images
Figure CN223039084U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of batteries, and in particular to an adapter plate, a battery, and an electrical device. Background Art
[0002] Currently, a battery generally includes a housing, an electric core disposed in the housing, and a top cover covering an opening of the housing. The tab of the electric core is usually electrically connected to a pole on the top cover through an adapter plate.
[0003] With the continuous improvement of the requirements for energy density and high-rate charge and discharge, the problem of heat generation of the adapter plate has an adverse impact on the battery, which cannot be ignored. Therefore, higher requirements are put forward for the over-current capacity of the adapter plate. In the prior art, the resistance between different solder prints is reduced by thickening the adapter plate, and a semi-circular notch is cut out on the adapter plate to play a role in weight reduction.
[0004] However, the current shape of the adapter plate is unreasonable, resulting in a large increase in the resistance of the adapter plate and unable to reduce the weight while meeting the over-current capacity. Therefore, there is still room for improvement. Summary of the Utility Model
[0005] In view of this, the present application provides an adapter plate, a battery, and an electrical device, aiming to solve the above technical problems to a certain extent.
[0006] The first aspect of the present application provides an adapter plate, including:
[0007] An adapter body, the adapter body has a first area and a second area spaced along a first direction, both the first area and the second area are used for electrically connecting with the tab, the adapter body further has a third area, the third area is located on one side of the connection line between the first area and the second area in a second direction, the third area is used for electrically connecting with the pole, and the first direction is perpendicular to the second direction;
[0008] The adapter body includes a first intermediate area connected between the first area and the third area, and the adapter body further includes a second intermediate area connected between the second area and the third area;
[0009] Wherein, along the connection line between the first area and the third area, the width of the first intermediate area first increases and then decreases, and along the connection line between the second area and the third area, the width of the second intermediate area first increases and then decreases.
[0010] Preferably, the first intermediate area has a first arc, and the second intermediate area has a second arc. Wherein, the first arc and the second arc intersect at a recessed position, and the adapter plate forms a recess at the recessed position.
[0011] Preferably, the center of the first arc and the first region are on the same side of the first arc, and the center of the second arc and the second region are on the same side of the second arc.
[0012] Preferably, the first intermediate region further has a third arc opposite to the first arc, and the second intermediate region further has a fourth arc opposite to the second arc.
[0013] Preferably, the adapter body further includes a first surrounding contour that surrounds the outside of a part of the first region, and both ends of the first surrounding contour are respectively connected to the first arc and the third arc;
[0014] Wherein, the first surrounding contour has a first straight contour and a second straight contour spaced apart in a first direction, and a third straight contour extending along the first direction between the first straight contour and the second straight contour.
[0015] Preferably, the adapter body further includes a second surrounding contour that surrounds the outside of a part of the second region, and both ends of the second surrounding contour are respectively connected to the second arc and the fourth arc;
[0016] Wherein, the second surrounding contour has a fourth straight contour and a fifth straight contour spaced apart in a first direction, and a sixth straight contour extending along the first direction between the fourth straight contour and the fifth straight contour.
[0017] Preferably, the adapter body further has a seventh straight contour that extends along the first direction, and both ends of the seventh straight contour are respectively connected to the third arc and the fourth arc.
[0018] Preferably, the distance between the seventh straight contour and the third region is 1 - 10 mm.
[0019] Preferably, the adapter piece is a symmetric structure with respect to the axis of symmetry passing through the recessed position and the third region.
[0020] The second aspect of the present application provides a battery, including the adapter piece as described above.
[0021] The third aspect of the present application provides an electrical device, including the battery as described above.
[0022] According to the adapter provided in the present application, the first intermediate region and the second intermediate region of the adapter are both arranged in a manner that the width first increases and then decreases. That is to say, the width of the first intermediate region near the first region is smaller and the width near the third region is smaller, and the width of the middle part is larger. Similarly, the second intermediate region is also the same. Therefore, according to the adapter provided in the embodiment of the present application, the first intermediate region and the second intermediate region provide a trend of the current-carrying width that is small on both sides and large in the middle. Compared with the trend of the current-carrying width that is wide on both sides and small in the middle in the prior art, the current-carrying capacity is stronger.
[0023] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.
[0025] Figure 1 Shows a schematic diagram of the adapter provided in the embodiment of the present application.
[0026] Figure 2 Shows a schematic diagram of the voltage distribution simulation of the existing adapter.
[0027] Figure 3 Shows a schematic diagram of the voltage distribution simulation of the A1 adapter that only changes the shape without changing the thickness of the adapter.
[0028] Figure 4 Shows a schematic diagram of the voltage distribution simulation of the A2 adapter that changes both the shape and the thickness according to the embodiment of the present application.
[0029] REFERENCE SIGNS:
[0030] 100 - adapter body; 110 - first region; 120 - second region; 130 - third region; 140 - first intermediate region; 150 - second intermediate region;
[0031] 141 - first arc; 142 - second arc; 143 - recessed position; 144 - first surrounding contour; 144a - first straight contour; 144b - second straight contour; 144c - third straight contour; 145 - second surrounding contour; 145a - fourth straight contour; 145b - fifth straight contour; 145c - sixth straight contour;
[0032] 154 - Third arc; 155 - Fourth arc; 156 - Seventh linear profile
[0033] F1 - First direction; F2 - Second direction Detailed implementation mode
[0034] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application
[0035] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance
[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations
[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application
[0038] According to the first aspect of the embodiments of the present application, a transition piece is provided. The structure and working principle of the transition piece will be specifically described below with reference to the accompanying drawings
[0039] The connecting piece provided by the embodiment of the present application includes a connecting main body 100. The connecting main body 100 has a first region 110 and a second region 120 that are spaced apart along a first direction F1. Both the first region 110 and the second region 120 are used for electrically connecting with the tab. The connecting main body 100 further has a third region 130. The third region 130 is located on one side of the connection line between the first region 110 and the second region 120 in a second direction F2. The third region 130 is used for electrically connecting with the terminal post. The first direction F1 is perpendicular to the second direction F2.
[0040] In the embodiment, the connecting main body 100 includes a first intermediate region 140 connected between the first region 110 and the third region 130. The connecting main body 100 further includes a second intermediate region 150 connected between the second region 120 and the third region 130. In the embodiment, along the connection line between the first region 110 and the third region 130, the width of the first intermediate region 140 first increases and then decreases. Along the connection line between the second region 120 and the third region 130, the width of the second intermediate region 150 first increases and then decreases.
[0041] Thus, for the connecting piece provided by the embodiment of the present application, the first intermediate region 140 and the second intermediate region 150 of the connecting piece are both arranged in such a way that the width first increases and then decreases. That is to say, the width of the first intermediate region 140 near the first region 110 is small and the width near the third region 130 is small, and the width of the middle part is large. Similarly, the second intermediate region 150 is also the same. Therefore, for the connecting piece provided by the embodiment of the present application, the first intermediate region 140 and the second intermediate region 150 provide a trend of the current-carrying width that is small on both sides and large in the middle. Compared with the trend of the current-carrying width that is large on both sides and small in the middle in the prior art, the current-carrying capacity is stronger.
[0042] As Figure 1 shown, as an example, the first region 110 and the second region 120 can be, for example, rectangular regions. The first region 110 and the second region 120 can be electrically connected to the tab, for example, by welding. In Figure 1 the given orientation, the first region 110 and the second region 120 can be arranged at intervals along the vertical direction. In other words, the connection line between the first region 110 and the second region 120 extends along the vertical direction. In the embodiment, the third region 130 can be arranged on one side of the connection line between the first region 110 and the second region 120, for example, Figure 1 the left side shown in. In the embodiment, the third region 130 can also be electrically connected to the terminal post by welding.
[0043] According to the adapter provided by the embodiments of the present application, the first intermediate region 140 may have a first circular arc 141, and the second intermediate region 150 may have a second circular arc 142. In an embodiment, the first circular arc 141 and the second circular arc 142 may intersect at a recessed position 143, and the adapter may form a recess at the recessed position 143. Thus, according to the adapter provided by the embodiments of the present application, the adapter has a recess formed at the recessed position 143, and the setting of the recess can play a role in reducing the weight of the adapter, that is, the recess formed at the recessed position 143 can reduce the overall weight of the adapter.
[0044] In an embodiment, the "recessed position 143" mentioned in the above description is substantially the intersection point formed by the intersection of the first circular arc 141 and the second circular arc 142. For the "recess" formed at the "recessed position 143", the recess is substantially defined by a part of the first circular arc 141, a part of the second circular arc 142, and the recessed position 143. In addition, in an embodiment, the "recess" mentioned here is more to the left relative to the right edge of the adapter body 100 in the overall structure of the adapter body 100, thus forming a recessed state. The right edge mentioned here is the first surrounding contour 144 and the second surrounding contour 145 to be described later, which will be specifically described in the subsequent description.
[0045] According to the adapter provided by the embodiments of the present application, the center of the first circular arc 141 may be on the same side of the first circular arc 141 as the first region 110, and the center of the second circular arc 142 may be on the same side of the second circular arc 142 as the second region 120.
[0046] Thus, according to the adapter provided by the embodiments of the present application, due to the above setting method of the centers of the circles, both the first circular arc 141 and the second circular arc 142 are convex outward, which is more conducive to more simply machining to obtain the first intermediate region 140 and the second intermediate region 150 with a trend of changing the current-carrying width that is small on both sides and large in the middle.
[0047] According to the adapter provided by the embodiments of the present application, the first intermediate region 140 may further have a third circular arc 154 opposite to the first circular arc 141, and the second intermediate region 150 may further have a fourth circular arc 155 opposite to the second circular arc 142.
[0048] In an embodiment, the first arc 141, the second arc 142, the third arc 154, and the fourth arc 155 are all easy to machine and position as arcs. In addition, for the third arc 154 and the fourth arc 155, they can also be arranged in a convex manner. Thus, the third arc 154 and the first arc 141 together define the two outer sides of the first intermediate region 140. The third arc 154 and the first arc 141 are farthest from each other in the middle, while on both sides of the first intermediate region 140 close to the first region 110 and the third region 130 respectively, they tend to approach each other, making the two sides of the first intermediate region 140 small and the middle large. Similarly, the fourth arc 155 and the second arc 142 are the same, which will not be elaborated here.
[0049] According to the adapter provided by the embodiment of the present application, the adapter body 100 may further include a first surrounding contour 144. The first surrounding contour 144 can surround the outside of a part of the first region 110, and both ends of the first surrounding contour 144 can be respectively connected to the first arc 141 and the third arc 154.
[0050] In an embodiment, the first surrounding contour 144 may have a first straight contour 144a and a second straight contour 144b that are spaced apart in the first direction F1 (i.e., Figure 1 the vertical direction in the figure) and a third straight contour 144c that extends along the first direction F1 between the first straight contour 144a and the second straight contour 144b. In the embodiment, the first straight contour 144a is connected to the third arc 154, and the second straight contour 144b is connected to the first arc 141.
[0051] As an example, in the embodiment, the length of the first straight contour 144a may be greater than the length of the second straight contour 144b. The right edge of the adapter body 100 mentioned in the above description is substantially the third straight contour 144c of the first surrounding contour 144.
[0052] Similarly, according to the adapter of the present application, the adapter body 100 may further include a second surrounding contour 145. The second surrounding contour 145 can surround the outside of a part of the second region 120, and both ends of the second surrounding contour 145 can be respectively connected to the second arc 142 and the fourth arc 155.
[0053] In an embodiment, the second surrounding contour 145 may have a fourth straight contour 145a and a fifth straight contour 145b that are spaced apart in the first direction F1 and a sixth straight contour 145c that extends along the first direction F1 between the fourth straight contour 145a and the fifth straight contour 145b. Here, the fourth straight contour 145a and the fifth straight contour 145b are respectively connected to the second arc 142 and the fourth arc 155.
[0054] According to the adapter provided by the embodiment of the present application, the adapter body 100 may further have a seventh straight profile 156, which may extend along the first direction F1, and both ends of the seventh straight profile 156 may be respectively connected to the third arc 154 and the fourth arc 155.
[0055] According to the adapter provided by the embodiment of the present application, the distance between the seventh straight profile 156 and the third region 130 is 1 - 10 mm, so as to provide a positioning tolerance for the welding of the third region 130 and the pole post (for example, laser welding can be used). In addition, the distances between the first straight profile 144a, the second straight profile 144b, and the third straight profile 144c and the corresponding sides of the rectangular first region 110 are also 1 - 10 mm, which also provides a positioning tolerance for welding (for example, ultrasonic welding can be used). Similarly, the distances between the fourth straight profile 145a, the fifth straight profile 145b, and the sixth straight profile 145c and the corresponding sides of the rectangular second region 120 are also 1 - 10 mm, which also provides a positioning tolerance for welding (for example, ultrasonic welding can be used).
[0056] In addition, according to the adapter provided by the embodiment of the present application, it may be a symmetric structure that is convenient for processing in terms of structure. Specifically, the adapter may be symmetric about the connection line of the recessed position 143 and the third region 130.
[0057] Figures 2 to 4 They are the voltages between the solder marks of the original adapter and the optimized adapter under the same energizing current respectively. Among them, Figure 3 A1 is to change only the shape without changing the thickness of the adapter, Figure 4 A2 is to change both the shape and the thickness, and the corresponding resistance and weight changes are as follows:
[0058] Adapter piece Voltage (resistance) Mass A0 3.230 mV (R0) 22.45g A1 3.212 mV (0.6% decrease) 19.762g(12.0％↓) A2 2.944 mV (8.8% decrease) 19.760g(12.1％↓)
[0059] As can be seen from the above table, the adapter provided by the embodiment of the present application can improve the overcurrent capacity and reduce the weight.
[0060] According to the second aspect of the embodiment of the present application, a battery is provided, including the above adapter, and further including a battery cell and a top cover. Among them, a pole post is provided on the top cover, and the adapter is electrically connected to the pole ear of the battery cell and the pole post on the top cover in the above manner.
[0061] According to the third aspect of the embodiment of the present application, an electrical device is provided, including the above battery.
[0062] The above are only the preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Any equivalent structural transformation made under the innovative concept of the present application by using the content of the specification and drawings of the present application, or any direct / indirect application in other related technical fields is included in the protection scope of the present application.
Claims
1. A transfer sheet, characterized in that: include: A transfer body (100), the transfer body (100) comprising a first region (110) and a second region (120) arranged at intervals along a first direction (F1), the first region (110) and the second region (120) both being used to electrically connect to a pole tab, the transfer body (100) further comprising a third region (130), the third region (130) being located on one side of a line connecting the first region (110) and the second region (120) in the second direction (F2), the third region (130) being used to electrically connect to a pole, the first direction (F1) being perpendicular to the second direction (F2); The transfer body (100) includes a first intermediate area (140) connected between the first area (110) and the third area (130), and the transfer body (100) also includes a second intermediate area (150) connected between the second area (120) and the third area (130); Among them, along the line connecting the first area (110) and the third area (130), the width of the first intermediate area (140) first increases and then decreases, and along the line connecting the second area (120) and the third area (130), the width of the second intermediate area (150) first increases and then decreases.
2. The adapter according to claim 1, characterized in that: The first intermediate region (140) has a first circular arc (141), and the second intermediate region (150) has a second circular arc (142), wherein the first circular arc (141) and the second circular arc (142) intersect at a recessed position (143), and the adapter forms a recessed portion at the recessed position (143).
3. The adapter according to claim 2, characterized in that: The center of the first arc (141) and the first area (110) are located on the same side of the first arc (141), and the center of the second arc (142) and the second area (120) are located on the same side of the second arc (142).
4. The adapter according to claim 2, characterized in that: The first intermediate region (140) further comprises a third circular arc (154) opposite to the first circular arc (141), and the second intermediate region (150) further comprises a fourth circular arc (155) opposite to the second circular arc (142).
5. The adapter according to claim 4, characterized in that: The adapter body (100) further comprises a first surrounding contour (144), wherein the first surrounding contour (144) surrounds the outer side of a portion of the first area (110), and two ends of the first surrounding contour (144) are respectively connected to the first circular arc (141) and the third circular arc (154); The first surrounding contour (144) comprises a first straight contour (144a) and a second straight contour (144b) arranged at intervals in a first direction (F1), and a third straight contour (144c) extending along the first direction (F1) between the first straight contour (144a) and the second straight contour (144b).
6. The adapter according to claim 4, characterized in that: The adapter body (100) further comprises a second surrounding contour (145), wherein the second surrounding contour (145) surrounds the outer side of a portion of the second area (120), and two ends of the second surrounding contour (145) are respectively connected to the second circular arc (142) and the fourth circular arc (155); The second surrounding contour (145) comprises a fourth straight contour (145a) and a fifth straight contour (145b) arranged at intervals in the first direction (F1), and a sixth straight contour (145c) extending along the first direction (F1) between the fourth straight contour (145a) and the fifth straight contour (145b).
7. The adapter according to claim 4, characterized in that: The adapter body (100) further has a seventh straight line profile (156), the seventh straight line profile (156) extending along the first direction (F1), and the two ends of the seventh straight line profile (156) respectively connecting the third circular arc (154) and the fourth circular arc (155).
8. The adapter according to claim 7, characterized in that: The distance between the seventh straight line contour (156) and the third region (130) is 1 to 10 mm.
9. The adapter according to any one of claims 2 to 8, characterized in that: The adapter plate is a symmetrical structure with respect to a symmetry axis passing through the recessed position (143) and the third area (130).
10. A battery, characterized in that: It comprises the adapter sheet as claimed in any one of claims 1 to 9.
11. An electrical device, characterized in that: Comprising the battery as claimed in claim 10.