CN218385443U - Battery with a battery cell - Google Patents
Battery with a battery cell Download PDFInfo
- Publication number
- CN218385443U CN218385443U CN202222613119.9U CN202222613119U CN218385443U CN 218385443 U CN218385443 U CN 218385443U CN 202222613119 U CN202222613119 U CN 202222613119U CN 218385443 U CN218385443 U CN 218385443U
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- 210000004027 cell Anatomy 0.000 claims description 43
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 210000005056 cell body Anatomy 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application provides a battery, which comprises a battery core, a shell and a protection circuit board, wherein the battery core is arranged in the shell, the end surface of the shell is provided with a terminal, the terminal comprises a first terminal and a second terminal, the first terminal and the second terminal are connected with the battery core, a first groove is formed between the first terminal and the second terminal, and the protection circuit board is arranged in the first groove; the protection circuit board includes a circuit board main body and a connection portion disposed on the circuit board main body. The battery structure of the application can improve the capacity of the battery.
Description
Technical Field
The application belongs to the field of batteries, and particularly relates to a battery.
Background
At present, electronic equipment is widely applied to daily life, along with the increasing use frequency, the increasing power consumption and the lighter and thinner volume of the electronic equipment, and the battery directly determines the performance of the battery as a core part of the electronic equipment.
In order to supply the energy inside the battery to the electronic device, it is necessary to connect the battery and the electronic device through the protection circuit board to supply the energy of the battery to the electronic device through the protection circuit board. Specifically, one end of the protection circuit board is connected to the positive electrode and the negative electrode of the battery, and the other end of the protection circuit board is connected to the electronic equipment, so that the battery provides electric energy for the electronic equipment through the protection circuit board.
However, the protection circuit board occupies a large space due to its large volume, so that the battery occupies a small space and has a low battery capacity.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, this application provides a battery, can make the battery occupy bigger space, can improve the capacity of battery.
The application provides a battery, which comprises a battery cell, a shell and a protection circuit board, wherein the battery cell is arranged in the shell, the end surface of the shell is provided with terminals, the terminals comprise a first terminal and a second terminal, the first terminal and the second terminal are connected with the battery cell, a first groove is formed between the first terminal and the second terminal, and the protection circuit board is arranged in the first groove; the protection circuit board includes a circuit board main body and a connection portion disposed on the circuit board main body.
Optionally, the battery cell includes a battery cell body and tabs connected to the battery cell body, where the tabs include a first tab and a second tab, and the first tab and the second tab are connected to the first terminal and the second terminal, respectively.
Optionally, the battery further comprises a switching block, and the switching block is respectively connected with the terminal and the tab; the depth of the first groove is smaller than or equal to the thickness of the transfer block.
Optionally, the difference between the distance from the groove bottom of the first groove to the outer wall of the shell and the thickness of the transfer block is less than or equal to 3mm.
Optionally, an angle between a groove bottom of the first groove and a sidewall of the first groove is greater than or equal to 90 °.
Optionally, the end face of the housing is further provided with a second groove, and the second groove is communicated with the first groove.
Optionally, a projection of the first terminal in the thickness direction of the battery cell at least partially coincides with the second groove.
Optionally, a heat dissipation member is disposed on the first groove and/or the second groove, and the heat dissipation member and the first groove or the second groove are fixed by heat conduction glue or welding.
Optionally, the heat conductivity of the heat sink is greater than or equal to the heat conductivity of the housing.
Optionally, the connection portion includes a first connection portion, a second connection portion and a third connection portion, the first connection portion is connected to the circuit board main body and the first terminal, and the second connection portion is connected to the circuit board main body and the second terminal.
Optionally, an insulating layer is disposed between the first connecting portion and the housing.
Optionally, a first insulating sheet is disposed between the first terminal and the end face of the housing; at least part of the projection of the first connecting part on the end face of the shell is positioned in the first insulating sheet.
Optionally, the battery further comprises a circuit breaker connected between the first connection portion and the first terminal.
Optionally, the first groove penetrates through a first surface of the housing and a second surface of the housing, wherein the first surface and the second surface are respectively located on two opposite sides of the end surface of the housing.
Optionally, the groove bottom and the groove wall of the first groove are transited through an arc section, and the radius of the arc section is 0, 5-2 and 5mm.
Optionally, the battery further includes an insulating layer connected between the circuit board main body and the first groove.
Optionally, the circuit board main body, the insulating layer and the first groove are fixed in an adhesion manner; or the circuit board main body, the insulating layer and the first groove are fixed in a welding mode.
Optionally, the circuit board main body and the shell are connected by bonding or buckling; or the circuit board main body and the first groove of the shell are wrapped by an injection molding body.
Optionally, a heat dissipation member is disposed between the circuit board main body and the housing, and a heat conductivity of the heat dissipation member is greater than or equal to a heat conductivity of the housing.
Optionally, the heat sink is fixed to the housing by a heat-conducting adhesive; alternatively, the heat sink is welded to the housing.
The application provides a battery, which comprises a battery core, a shell and a protection circuit board, wherein the battery core is arranged in the shell, the end surface of the shell is provided with a terminal, the terminal comprises a first terminal and a second terminal, the first terminal and the second terminal are connected with the battery core, a first groove is formed between the first terminal and the second terminal, and the protection circuit board is arranged in the first groove; the protection circuit board includes a circuit board main body and a connection portion disposed on the circuit board main body. The battery structure of the application can improve the capacity of the battery.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a battery cell and a casing provided in an embodiment of the present application.
Description of reference numerals:
100-a battery;
110-electric core;
120-a housing;
130-a protection circuit board;
140-an insulating layer;
111-a cell body;
121-a first groove;
122 — a first surface;
123-a second surface;
124-terminal;
125-a second groove;
1241-first terminal;
1242-second terminal;
131-a circuit board body;
132-a connecting portion;
1321-a first connection;
1322-a second connecting portion;
1323-third connecting part.
Detailed Description
In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. 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 application.
In order to supply the energy inside the battery to the electronic device, it is necessary to connect the battery and the electronic device through the circuit board to supply the energy of the battery to the electronic device through the protection circuit board. Specifically, one end of the protection circuit board is connected to the positive electrode and the negative electrode of the battery, and the other end of the protection circuit board is connected to the electronic equipment, so that the battery provides electric energy for the electronic equipment through the protection circuit board.
However, the protection circuit board has a large volume and occupies a large space, so that the battery occupies a small space and has a low battery capacity.
In order to solve the above problem, the present application provides a battery including a battery cell, a case, and a protection circuit board. The middle of the end face of the shell is provided with a first groove, the protection circuit board is arranged in the first groove and used for connecting the battery core in the shell and external electronic equipment, and the protection circuit board is arranged in the first groove, so that more space can be saved for a battery, and the capacity of the battery can be improved.
The details of the present application will now be further described with reference to the accompanying drawings and detailed description.
In order to supply the energy inside the battery to the electronic device, it is necessary to connect the battery and the electronic device through the protection circuit board to supply the energy of the battery to the electronic device through the protection circuit board. Specifically, one end of the protection circuit board is connected to the first terminal and the second terminal, and the other end of the protection circuit board is connected to the electronic device, so that the battery provides electric energy for the electronic device through the protection circuit board. However, the protection circuit board has a large volume and occupies a large space, so that the battery occupies a small space and has a low battery capacity.
Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present application. Fig. 2 is a schematic structural diagram of a battery cell and a casing provided in an embodiment of the present application. As shown in fig. 1 and 2, the battery 100 includes a battery cell 110, a casing 120, and a protection circuit board 130. The battery cell 110 is disposed in the casing 120 as a most core energy supply unit of the battery 100, and is used for supplying energy to external electronic equipment. The casing 120 serves as a protection structure outside the battery 100, and is used to protect the internal battery cell 110 from external damage. The terminal 124 is disposed on the end face of the casing 120, the terminal 124 includes a first terminal 1241 and a second terminal 1242, the first terminal 1241 and the second terminal 1242 are connected to the battery cell 110, the first terminal 1241 and the second terminal 1242 are symmetrically disposed along the end face of the casing 120, a first groove 121 is disposed between the first terminal 1241 and the second terminal 1242, and the protection circuit board 130 is disposed in the first groove 121.
Further, the protection circuit board 130 is disposed in the first groove 121, and is used to connect the internal battery cell 110 and external electronic equipment. Specifically, the protection circuit board 130 includes a circuit board main body 131 and a connection portion 132 disposed on the circuit board main body 131. The circuit board main body 131 is used as the most core part of the protection circuit board 130, and is used for fixing circuits and optimizing the layout of electrical appliances; the connection portion 132 is configured to be connected with the battery cell 110 and an external electronic device to connect the battery cell 110, the circuit board main body 131 and the electronic device, so that the energy of the battery 100 can be smoothly supplied to the external electronic device.
Because the protection circuit board 130 is disposed in the first groove 121, the protection circuit board 130 occupies less space without affecting the electrical conductivity and the safety performance, and further more space is saved for the battery 100, so that the battery cell 110 occupies more space, and the capacity of the battery 100 can be improved.
Optionally, the battery cell 110 includes a cell body 111 and tabs connected to the cell body 111, where the tabs include a first tab and a second tab, and the first tab and the second tab are connected to the first terminal 1241 and the second terminal 1242, respectively.
Specifically, the tabs include a first tab and a second tab, and the first tab and the second tab are respectively connected to the first terminal 1241 and the second terminal 1242, so that the first terminal 1241 and the second terminal 1242 can be more conveniently connected to external electronic equipment without affecting the safety of the internal battery cell 110, so that the energy of the battery cell 110 is normally provided to the external electronic equipment.
Wherein, the first groove 121 is located between the first terminal 1241 and the second terminal 1242, after the protection circuit board 130 is placed in the first groove 121, because the connection distances between the protection circuit board 130 and the first terminal 1241 and the second terminal 1242 are the same, the protection circuit board 130 can be conveniently connected with the first terminal 1241 and the second terminal 1242, and a connection error is not easy to occur, thereby avoiding a short circuit condition after the protection circuit board 130 is connected with the first terminal 1241 and the second terminal 1242.
Alternatively, the first terminal 1241 and the second terminal 1242 are respectively provided insulated from the housing 120. Specifically, since the first terminal 1241 and the second terminal 1242 are respectively insulated from the case 120, the first terminal 1241 and the second terminal 1242 can be prevented from being short-circuited with the case 120, and thus the battery 100 can be prevented from being short-circuited.
Optionally, the battery 100 further includes a junction block, and the junction block respectively connects the terminal 124 and the tab; the depth of the first groove 121 is less than or equal to the thickness of the transfer block.
Optionally, the depth of the first groove 121 is less than or equal to the thickness of the transfer block. Specifically, since the depth of the first groove 121 is less than or equal to the thickness of the transfer block, the circuit board main body 131 can be more easily placed in the first groove 121, so that the circuit board main body 131 can work normally.
Optionally, the difference between the distance from the groove bottom of the first groove 121 to the outer wall of the housing 120 and the thickness of the transfer block is less than or equal to 3mm. Specifically, since the difference between the distance from the groove bottom of the first groove 121 to the outer wall of the housing 120 and the thickness of the transfer block is less than or equal to 3mm, on one hand, the protection circuit board 130 can be ensured to be placed in the first groove 121, so that the protection circuit board 130 is connected with the internal battery cell 110 and the external electronic device; on the other hand, it can be ensured that the protection circuit board 130 does not occupy too much space of the battery 100, and further more space is saved for the battery 100, so that the battery cell 110 occupies more space, and the capacity of the battery 100 can be improved.
Alternatively, the angle from the groove bottom of the first groove 121 to the side wall of the first groove 121 is greater than or equal to 90 °. Specifically, since the angle from the groove bottom of the first groove 121 to the side wall of the first groove 121 is greater than or equal to 90 °, the circuit board main body 131 can be more easily placed in the first groove 121, and the circuit board main body 131 can normally operate.
Optionally, the circuit board main body 131 is disposed in the first groove 121, and the connecting portion 132 extends to the outside of the first groove 121. Specifically, since the circuit board main body 131 is disposed in the first groove 121, and the connection portion 132 extends to the outside of the first groove 121, on one hand, the space occupied by the circuit board main body 131 can be reduced to the greatest extent, so that the protection circuit board 130 does not occupy too much space of the battery 100, and further more space is saved for the battery 100, so that the battery cell 110 occupies more space, and the capacity of the battery 100 can be improved; on the other hand, the connection portion 132 and the circuit board main body 131 do not interfere with each other, so that the battery cell 110, the circuit board main body 131 and an external electronic device can be normally connected to each other.
Optionally, the end surface of the housing 120 is further provided with a second groove 125, the length of the second groove 125 is 0 mm to 5mm to 3mm, and the depth of the second groove is 0 mm to 3mm. Specifically, since the end surface of the housing 120 is further provided with the second groove 125, the length of the second groove 125 is 0 mm or 5mm to 3mm, and the depth of the second groove is 0 mm or 3mm to 3mm, a connection line may be disposed in the second groove 125 to connect the battery 100 and other electronic devices.
Optionally, a heat dissipation member is disposed on the second groove 125, and the heat dissipation member and the second groove 125 are fixed by a heat conductive adhesive or by welding. The heat sink and the second recess 125 can be firmly fixed. And the heat dissipation member is a metal material, and the heat conductivity of the heat dissipation member is greater than or equal to the heat conductivity of the housing 120, so as to dissipate heat of the housing 120 through the heat dissipation member.
In some alternative embodiments, the connection part 132 includes a first connection part 1321, a second connection part 1322, and a third connection part 1323. The first connection portion 1321 is connected to the circuit board main body 131 and the first terminal 1241, the second connection portion 1322 is connected to the circuit board main body 131 and the second terminal 1242, and the third connection portion 1323 is used for connection to the circuit board main body 131 and an external electronic device.
Specifically, the first connection portion 1321, the second connection portion 1322, and the third connection portion 1323 are respectively disposed in three directions of the circuit board main body 131, wherein the first connection portion 1321 and the second connection portion 1322 are in the same horizontal direction and are respectively connected to the first terminal 1241 and the second terminal 1242, and the third connection portion 1323 is located in a direction perpendicular to the first connection portion 1321 and the second connection portion 1322 for connecting to an external electronic device.
Since the first connection portion 1321, the second connection portion 1322, and the third connection portion 1323 are respectively located in three directions of the circuit board main body 131, when the circuit board main body 131 is connected to the internal battery cell 110, the first terminal 1241, the second terminal 1242, and the external electronic device, staggering does not occur, so as to avoid a short circuit, and enable the energy of the battery cell 110 to be normally supplied to the external electronic device.
Optionally, a first insulating sheet is disposed between the first terminal 1241 and the end surface of the housing 120, and a projection of at least a portion of the first connection portion 1321 on the end surface of the housing 120 is located in the first insulating sheet to prevent the first connection portion 1321 from being connected with the housing 120.
Optionally, the battery 100 further comprises a circuit breaker connected between the first connection portion 1321 and the first terminal 1241. Specifically, since battery 100 further includes a circuit breaker, and the circuit breaker is connected between first connection portion 1321 and first terminal 1241, when battery 100 is in an abnormal state, it is possible to prevent battery 100 from being dangerous by disconnecting first connection portion 1321 and first terminal 1241 and further disconnecting the circuit of battery 100.
Alternatively, the shape of the first recess 121 matches the shape of the circuit board body 131. Specifically, since the shape of the first groove 121 is matched with the shape of the circuit board main body 131, the circuit board main body 131 can be completely placed in the first groove 121, and the circuit board main body 131 can occupy the minimum space without affecting the electrical conductivity and the safety performance, so that the protection circuit board 130 occupies the minimum space, thereby saving more space for the battery 100, so that the battery cell 110 occupies the maximum space, and the capacity of the battery 100 can be improved.
In some alternative embodiments, the first groove 121 penetrates the first surface 122 of the housing 120 and the second surface 123 of the housing 120, wherein the first surface 122 and the second surface 123 are respectively located on two opposite sides of the end surface of the housing 120. Specifically, the first groove 121 penetrates through the first surface 122 and the second surface 123 of the housing 120, and the first surface 122 and the second surface 123 are respectively located on two opposite sides of the end surface of the housing 120, so that the protection circuit board 130 can be more conveniently placed in the first groove 121, and the protection circuit board 130 can be more conveniently detached. Meanwhile, the third connection portion 1323, which is perpendicular to the horizontal direction of the first terminal 1241 and the second terminal 1242, can be secured, and when the connection portion is connected to an external electronic device, the connection portion is not hindered by the housing 120, and the connection portion is more reliable.
Optionally, the groove bottom and the groove wall of the first groove 121 are transited by an arc segment, and the radius of the arc segment is 0, 5-2, and 5mm. Specifically, since the groove bottom and the groove wall of the first groove 121 are transited by the arc section, and the radius of the arc section is 0, 5-2, and 5mm, the transition between the groove bottom and the groove wall of the first groove 121 can be smoother, and on one hand, sharp side edges and corners outside the battery 100 can be removed, so that the battery 100 is safer and more reliable in use; on the other hand, the burrs on the outer side of the battery 100 can be removed, so that the battery 100 is more beautiful as a whole, and in addition, the guide function can be achieved, so that the assembly of the housing 120 and the protection circuit board 130 of the battery 100 is more convenient.
Optionally, the battery 100 further includes an insulating layer 140, and the insulating layer 140 is connected between the circuit board main body 131 and the first groove 121. Specifically, the battery 100 further includes an insulating layer 140, the insulating layer 140 is connected between the circuit board main body 131 and the first groove 121, since the case 120 of the battery 100 is communicated with the second terminal 1242 of the battery cell 110, and thus the first groove 121 is communicated with the second terminal 1242 of the battery cell 110, the circuit board main body 131 is connected to the first terminal 1241, the second terminal 1242 and the external electronic device, and in order to avoid short circuit between the circuit board main body 131 and the case 120, between the battery cell 110 and the external electronic device, and thus affecting normal use of the battery 100, the insulating layer 140 is connected between the circuit board main body 131 and the first groove 121, so as to prevent short circuit between the circuit board main body 131 and the first groove 121.
In some alternative embodiments, the insulating layer 140 is disposed between the first terminal 1241 and the case 120, between the first connection portion 1321 and the case 120, and between the second connection portion 1322 and the case 120, so as to prevent short circuits from occurring between the circuit board main body 131, the first connection portion 1321, the second connection portion 1322, and the first terminal 1241, the second terminal 1242, thereby affecting the normal use of the battery 100.
As an alternative embodiment, the circuit board main body 131, the insulating layer 140 and the first groove 121 are fixed by adhesion. Specifically, the circuit board main body 131, the insulating layer 140 and the first groove 121 are fixed by adhesion, so that the circuit board main body 131, the insulating layer 140 and the first groove 121 are tightly connected, and are not easily damaged in the connection and fixation process, thereby affecting the use of the battery 100. Meanwhile, the fixing operation is portable by using a bonding mode, so that the circuit board main body 131, the insulating layer 140 and the first groove 121 can be more conveniently fixed.
As an alternative embodiment, the circuit board main body 131, the insulating layer 140 and the first groove 121 are fixed by welding. Specifically, the circuit board main body 131, the insulating layer 140 and the first groove 121 are fixed by welding, so that the circuit board main body 131, the insulating layer 140 and the first groove 121 are fixed more tightly, and the battery 100 does not shake or loosen during use, thereby stably supplying energy to external electronic equipment.
Optionally, the circuit board main body 131 and the housing 120 are fixed by bonding, injection molding or non-metal snap. Specifically, since the circuit board main body 131 and the housing 120 are fixed by bonding, injection molding or non-metal snap, a suitable connection mode can be selected for the circuit board main body 131 and the housing 120 according to actual conditions.
Optionally, a heat sink is disposed between the circuit board main body 131 and the housing 120, and has a thermal conductivity greater than or equal to that of the housing 120, and is bonded or welded to the housing 120. Specifically, since the heat sink is disposed between the circuit board main body 131 and the housing 120, the heat conductivity of the heat sink is greater than or equal to the heat conductivity of the housing 120, and the heat sink is bonded or welded to the housing 120, so that a danger that the battery 100 and the protection circuit board 130 generate heat seriously during the connection process can be avoided.
The connection process of the battery 100 provided by the present application is as follows: the battery 100 includes a battery cell 110, a case 120, and a protection circuit board 130. The battery cell 110 is disposed in the casing 120, a terminal 124 is disposed on an end face of the casing 120, the terminal 124 includes a first terminal 1241 and a second terminal 1242, the first terminal 1241 and the second terminal 1242 are connected to the battery cell 110, the first terminal 1241 and the second terminal 1242 are symmetrically disposed along an end face center of the casing 120, a first groove 121 is formed between the first terminal 1241 and the second terminal 1242, the protection circuit board 130 is disposed in the first groove 121, the protection circuit board 130 includes a circuit board main body 131 and a connection portion 132 disposed on the circuit board main body 131, and the connection portion 132 is configured to be connected to the battery cell 110 and external electronic equipment, so as to communicate the battery cell 110, the circuit board main body 131 and the external electronic equipment.
The circuit board main body 131 is disposed in the first groove 121, and the connecting portion 132 extends to the outside of the first groove 121. The shape of the first groove 121 matches the shape of the circuit board body 131, the first groove 121 penetrates the first surface 122 of the housing 120 and the second surface 123 of the housing 120, and the first surface 122 and the second surface 123 are respectively located on opposite sides of the end surface of the housing 120. The groove bottom and the groove wall of the first groove 121 are transited by an arc section, and the circuit board main body 131, the first groove 121 and the middle insulating layer 140 are fixed by means of bonding or welding.
Specifically, the battery cell 110 includes a battery cell body 111 and a tab connected to the battery cell body 111, the tab includes a first tab and a second tab, the first tab and the second tab are connected to the first terminal 1241 and the second terminal 1242 respectively and extend to the outside of the casing 120, the first groove 121 is located between the first groove and the second groove, and the connection portion 132 includes a first connection portion 1321, a second connection portion 1322 and a third connection portion 1323. The first connection portion 1321 is connected to the board main body 131 and the first terminal 1241, the second connection portion 1322 is connected to the board main body 131 and the second terminal 1242, and the third connection portion 1323 is used for connection to the board main body 131 and an external electronic device.
Because the protection circuit board 130 is disposed in the first groove 121, the protection circuit board 130 occupies less space without affecting the electrical conductivity and the safety performance, and further more space is saved for the battery 100, so that the battery cell 110 occupies more space, and the capacity of the battery 100 can be improved.
The battery comprises a battery cell, a shell and a protection circuit board, wherein the battery cell is arranged in the shell, a terminal is arranged on the end face of the shell and comprises a first terminal and a second terminal, the first terminal and the second terminal are connected with the battery cell, a first groove is formed between the first terminal and the second terminal, and the protection circuit board is arranged in the first groove; the protection circuit board includes a circuit board main body and a connection portion disposed on the circuit board main body. The battery structure of the application can improve the capacity of the battery.
In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, are used to indicate an orientation or positional relationship based on that shown in the drawings, merely for the convenience of description and simplicity of description, and do not indicate or imply that the referenced position or element must have a particular orientation, be of particular construction and operation, and therefore, are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communicated with each other inside the two elements or the interaction relationship between the two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present application may be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill 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 these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.
Claims (20)
1. The battery is characterized by comprising an electric core, a shell and a protective circuit board, wherein the electric core is arranged in the shell, terminals are arranged on the end surface of the shell, the terminals comprise a first terminal and a second terminal, the first terminal and the second terminal are connected with the electric core, a first groove is formed between the first terminal and the second terminal, and the protective circuit board is arranged in the first groove;
the protection circuit board comprises a circuit board main body and a connecting part arranged on the circuit board main body.
2. The battery of claim 1, wherein the cell comprises a cell body and tabs coupled to the cell body, the tabs comprising first and second tabs coupled to the first and second terminals, respectively.
3. The battery of claim 2, further comprising a junction block connecting the terminal and the tab, respectively;
the depth of the first groove is smaller than or equal to the thickness of the transfer block.
4. The battery of claim 3, wherein a difference between a distance between a groove bottom of the first groove to an outer wall of the case and a thickness of the transfer block is less than or equal to 3mm.
5. The cell defined in claim 1, wherein an angle between a trough bottom of the first groove and a sidewall of the first groove is greater than or equal to 90 °.
6. The battery of claim 1, wherein the end face of the housing is further provided with a second groove, the second groove communicating with the first groove.
7. The battery of claim 6, wherein a projection of the first terminal in a thickness direction of the cell at least partially coincides with the second groove.
8. The battery according to claim 6, wherein a heat dissipation member is disposed on the first groove and/or the second groove, and the heat dissipation member is fixed to the first groove or the second groove by a heat conductive adhesive or welding.
9. The battery of claim 8, wherein the heat sink has a thermal conductivity greater than or equal to a thermal conductivity of the housing.
10. The battery according to claim 1, wherein the connection portion includes a first connection portion connected to the circuit board main body and the first terminal, a second connection portion connected to the circuit board main body and the second terminal, and a third connection portion.
11. The battery of claim 10, wherein an insulating layer is disposed between the first connection portion and the case.
12. The battery of claim 10, wherein a first insulating sheet is disposed between the first terminal and the end face of the case;
at least part of the projection of the first connecting part on the end face of the shell is positioned in the first insulating sheet.
13. The battery of claim 10, further comprising a circuit breaker connected between the first connection and the first terminal.
14. The battery of claim 1, wherein the first groove extends through a first surface of the housing and a second surface of the housing, wherein the first surface and the second surface are located on opposite sides of an end surface of the housing.
15. The battery of any one of claims 1-14, wherein the groove bottom and the groove wall of the first groove are transited by a circular arc section, and the radius of the circular arc section is 0, 5-2 and 5mm.
16. The battery of any of claims 1-14, further comprising an insulating layer coupled between the circuit board body and the first recess.
17. The battery of claim 16, wherein the circuit board body, the insulating layer and the first groove are fixed by means of adhesion;
or the circuit board main body, the insulating layer and the first groove are fixed in a welding mode.
18. The battery of claim 1, wherein the circuit board body and the housing are bonded or snap-fit connected;
or the circuit board main body and the first groove of the shell are wrapped by an injection molding body.
19. The battery of claim 1, wherein a heat sink is disposed between the circuit board body and the housing, the heat sink having a thermal conductivity greater than or equal to a thermal conductivity of the housing.
20. The battery of claim 19, wherein the heat sink is secured to the housing by a thermally conductive adhesive;
alternatively, the heat sink is welded to the housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222613119.9U CN218385443U (en) | 2022-09-30 | 2022-09-30 | Battery with a battery cell |
| PCT/CN2023/111487 WO2024066744A1 (en) | 2022-09-30 | 2023-08-07 | Battery, battery pack, and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222613119.9U CN218385443U (en) | 2022-09-30 | 2022-09-30 | Battery with a battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218385443U true CN218385443U (en) | 2023-01-24 |
Family
ID=84927720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222613119.9U Active CN218385443U (en) | 2022-09-30 | 2022-09-30 | Battery with a battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218385443U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066744A1 (en) * | 2022-09-30 | 2024-04-04 | 珠海冠宇电池股份有限公司 | Battery, battery pack, and electronic device |
| WO2024109266A1 (en) * | 2022-11-25 | 2024-05-30 | 珠海冠宇电源有限公司 | Battery and electronic device |
-
2022
- 2022-09-30 CN CN202222613119.9U patent/CN218385443U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066744A1 (en) * | 2022-09-30 | 2024-04-04 | 珠海冠宇电池股份有限公司 | Battery, battery pack, and electronic device |
| WO2024109266A1 (en) * | 2022-11-25 | 2024-05-30 | 珠海冠宇电源有限公司 | Battery and electronic device |
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