CN112310566A - Sampling component, battery module, battery pack and device - Google Patents
Sampling component, battery module, battery pack and device Download PDFInfo
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- CN112310566A CN112310566A CN202010033708.2A CN202010033708A CN112310566A CN 112310566 A CN112310566 A CN 112310566A CN 202010033708 A CN202010033708 A CN 202010033708A CN 112310566 A CN112310566 A CN 112310566A
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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 utility model relates to a sampling component, battery module, group battery and device, sampling component can include this somatic part, sampling terminal and sampling line, sampling terminal has the main part, the outside of this somatic part is located to the main part cover, sampling line and sampling terminal electrical connection, because the main part cover is established in the outside of this somatic part, consequently when sampling component passes battery module's connecting piece and/or electrode terminal, sampling terminal can offset and electrical connection through main part and connecting piece and/or electrode terminal, so that sampling line can with battery module electrical connection, sampling component and battery module welded step can be saved in such design, reduce the processing degree of difficulty, promote production efficiency.
Description
Technical Field
The application relates to the technical field of energy storage devices, in particular to a sampling component, a battery module, a battery pack and a device.
Background
The battery module includes a plurality of battery cells including electrode terminals connected by connecting tabs to electrically connect the plurality of battery cells. In order to improve the working efficiency of the battery module, each battery cell should be in an optimal working state as much as possible, and in order to enable each battery cell to be in the optimal working state, working parameters (such as voltage, temperature and the like) of the battery cell need to be collected during the working process of the battery module. However, when the sampling part is welded to the connection member, the number of assembly steps of the battery module is increased, the assembly difficulty of the battery module is increased, and the production efficiency is reduced.
Disclosure of Invention
The application provides a sampling component, a battery module, a battery pack and a device, which are used for solving the problem that the sampling component is complicated in connection step with the battery module, so that the production efficiency is low.
The embodiment of the application provides a sampling part, includes:
a body portion;
sampling lines;
a sampling terminal for connecting to the body portion, the sampling terminal being arranged in a plurality along an axial direction of the sampling member;
the sampling terminal is used for being electrically connected with the sampling line;
the sampling terminal comprises a main body part, and the main body part is used for being sleeved on the outer side of the main body part.
In one possible design, the sampling terminal further includes a connection portion for connecting with the body portion;
the main body part is used for being connected with the main body part, and the main body part is electrically connected with the sampling line through the connecting part.
In one possible design, a projection of the connecting portion is located within a range of the main body portion in an axial direction of the sampling member.
In one possible design, the body portion has a first opening extending along an axial direction of the sampling member, and at least one end of the first opening penetrates through the body portion along the axial direction of the sampling member;
a portion of the connecting portion is configured to extend into the first cavity of the body portion through the first opening.
In one possible design, the first opening has oppositely disposed top and bottom walls;
the connecting part is used for being abutted against the top wall and the bottom wall.
In one possible design, the connecting portion and the body portion are arranged in the axial direction of the sampling member.
In one possible design, the connecting portion has a clamping space in which at least part of the sampling line is located;
the connecting portion has a second opening that penetrates the connecting portion in the axial direction of the sampling member.
In one possible design, one of the main body portion and the body portion is provided with a first raised portion, and the other is provided with a recessed portion;
the first protruding portion is used for being matched with the concave portion.
In one possible design, the main body portion has an inner wall, and the first protruding portion is provided on the inner wall;
the body portion has an outer wall, and the recessed portion is provided in the outer wall.
In one possible embodiment, the body has a third opening that extends through the body in the axial direction of the sampling member.
In one possible design, the connecting portion and the third opening are disposed on opposite sides of the body portion in a radial direction of the sampling member.
In one possible design, the sampling component comprises a plug for connecting with the sampling line.
A second aspect of embodiments of the present application provides a battery module including:
a battery cell including an electrode terminal;
a connection member for connecting the electrode terminals of the battery cells;
a sampling member according to any one of the above;
wherein the sampling component passes through the connecting piece and is connected with the connecting piece.
In one possible design, the connection members are connected to the electrode terminals of the battery cells and stacked in the axial direction of the sampling member;
the connecting piece is provided with a second through hole;
the sampling component is used for passing through the second through hole, the sampling terminal is used for being electrically connected with the connecting piece, and the sampling terminal is electrically connected with the electrode terminal through the connecting piece.
In one possible design, the electrode terminal is provided with a second through hole that communicates with the first through hole;
the sampling member is adapted to pass through the first through hole and the second through hole, and the sampling terminal is adapted to be electrically connected to the connecting member and the electrode terminal.
In one possible design, the sampling terminal includes a body portion;
the outer wall of the main body part comprises a second bulge part and a third bulge part, the second bulge part and the third bulge part are arranged along the axial direction of the sampling component, and the outer wall of the main body part between the second bulge part and the third bulge part is a sampling wall;
the second via has a second sidewall;
the second sidewall is located between the second boss and the third boss and is configured to abut the sampling wall.
In one possible design, the second projection has a first guide surface and a second guide surface arranged in the axial direction of the sampling member;
along the axial direction of the sampling component, the first guide surface and the second guide surface are inclined, and the inclination directions of the first guide surface and the second guide surface are opposite.
A third aspect of the present application provides a battery pack including:
a case forming an accommodation chamber;
a battery module as any one of the above;
wherein the battery module is located in the accommodating cavity.
The present application further provides an apparatus, comprising:
the battery pack as described above, the battery pack being for providing electrical energy.
The embodiment of the application provides a sampling component, wherein, this sampling component includes this somatic part, sampling line and sampling terminal, sampling terminal is connected with this somatic part, and the main part cover of sampling terminal is established in the outside of this somatic part, and a plurality of sampling terminals arrange along the axis direction of sampling component, sampling line and sampling terminal electrical connection, establish the outside at this somatic part through the main part cover with sampling terminal, so that sampling component when being connected with battery module, can pass battery module's connecting piece and/or electrode terminal with sampling component, and through main part and connecting piece and/or electrode terminal butt and electrical connection, so that sampling line can with battery module electrical connection, such design can save sampling component and battery module welded step, reduce the processing degree of difficulty, promote production efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus provided in an embodiment of the present application;
fig. 2 is a schematic structural view of the battery pack of fig. 1;
FIG. 3 is a schematic structural diagram of a sampling component provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a battery module and a sampling component according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of a connector provided in an embodiment of the present application;
FIG. 7 is a front view of a sampling terminal provided by an embodiment of the present application;
FIG. 8 is a schematic structural diagram of a sampling component and a connector provided in an embodiment of the present application;
fig. 9 is a front view of a sampling terminal provided by an embodiment of the present application;
FIG. 10 is an enlarged view of a portion of the section II in FIG. 4;
fig. 11 is a schematic structural diagram of a body portion according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a sampling terminal according to an embodiment of the present application;
FIG. 13 is an enlarged view of a portion of FIG. 1 at position I;
FIG. 14 is a cross-sectional view taken along A-A of FIG. 8;
FIG. 15 is an enlarged view of a portion of the V position in FIG. 14;
FIG. 16 is an enlarged view of a portion of the IV site of FIG. 11;
FIG. 17 is an enlarged view of a portion of position III of FIG. 4;
fig. 18 is a top view of a sampling terminal provided in an embodiment of the present application.
Reference numerals:
d-means;
an M-cell group;
m1-case;
m2-containing cavity;
a-a battery module;
1-a sampling component;
11-a body portion;
111-a first opening;
111A-top wall;
111B-bottom wall;
112-a recess;
113-an outer wall;
114-a first lumen;
12-a sampling terminal;
121-a body portion;
121A-first boss;
121B-inner wall;
121C-a second boss;
121 g-a first guide surface;
121 h-second guide surface;
121D-third boss;
121E-sampling wall;
121F-a second lumen;
122-a connecting portion;
122A-a clamping space;
122B-a second opening;
123-a third opening;
13-sampling line;
14-a plug;
2-a battery cell;
21-an electrode terminal;
211-second via hole;
211A-second sidewall;
22-a connector;
221-a first via;
221A-first sidewall.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only 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.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, including two, unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
The embodiment of the application provides a device using a battery cell as a power supply, a battery pack, a battery module and a sampling component, wherein the device using the battery cell as the power supply comprises a vehicle, a ship, a small airplane and other mobile equipment, the device comprises a power source, the power source is used for providing driving force for the device, and the power source can be configured as the battery module for providing electric energy for the device. The driving force of the device can be electric energy, and can also include electric energy and other energy sources (such as mechanical energy), the power source can be a battery module (or a battery pack), and the power source can also be a battery module (or a battery pack), an engine and the like. Therefore, a device that can use the battery cell as a power source is within the scope of the present application.
Taking a vehicle as an example, as shown in fig. 1, the vehicle in the embodiment of the present application may be a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, or may be a hybrid vehicle or an extended range vehicle. The vehicle can comprise a battery pack M and a vehicle main body, wherein the battery pack M is arranged on the vehicle main body, the vehicle main body is also provided with a driving motor, the driving motor is electrically connected with the battery pack M, the battery pack M provides electric energy, and the driving motor is connected with wheels on the vehicle main body through a transmission mechanism so as to drive the vehicle to move. Specifically, the battery pack M may be horizontally disposed at the bottom of the vehicle body.
As shown in fig. 2, the battery pack M includes a box M1 and the battery modules a of the present application, wherein the box has a containing cavity M2, the battery modules a are contained in the containing cavity M2, the number of the battery modules a may be one or more, and a plurality of the battery modules a are arranged in the containing cavity M2. The type of the case M1 is not limited, and may be a frame-like case, a disc-like case, a box-like case, or the like. Specifically, as shown in fig. 2, the case M1 may include a lower case that accommodates the battery module a and an upper case that covers the lower case.
The battery module a may include battery cells 2, a connecting member 22 and a sampling member 1, each battery cell 2 may be stacked along the length direction X, each battery cell 2 may include an electrode terminal 21, and each battery cell 2 includes a positive electrode terminal and a negative electrode terminal, in the battery module a, a plurality of battery cells 2 are electrically connected to each other, specifically, in a serial connection and/or a parallel connection manner, and each battery cell 2 is connected to each other through the connecting member 22, for example, when the battery cells 2 are connected in series, the positive electrode terminal of one battery cell 2 is connected to the negative electrode terminal of another battery cell 2 through the connecting member 22.
Under the general condition, the connecting piece welds with positive electrode terminal and negative electrode terminal, sampling part and connecting piece welding, thereby realize the electrical connection between sampling part and the connecting piece, and simultaneously, the connecting piece still with the free electrode terminal electrical connection of battery, thereby can realize sampling part and electrode terminal electrical connection, thereby information such as temperature and voltage to the battery monomer is gathered through the sampling part, and transmit to battery management unit, the user is through observing the data of sampling, the analysis, in order to obtain battery module's operating condition, when battery module's temperature or voltage appear when unusual, the user can in time know, and take corresponding countermeasure, and then reduce to cause phenomenons such as conflagration to take place because of battery module breaks down, and then promote battery module's security.
However, when the sampling member is connected to the battery module a, the sampling member is generally connected to the connector by welding, and although the sampling member and the battery module are electrically connected to each other, the sampling member and the battery module are complicated in processing and low in production efficiency, which is not favorable for practical production.
To solve the technical problem, as shown in fig. 3, an embodiment of the present application provides a sampling component 1, where the sampling component 1 may include a body portion 11, a sampling line 13, and a sampling terminal 12, the sampling terminal 12 is connected to the body portion 11, the sampling terminal 12 is used for being electrically connected to the sampling line 13, and the sampling component 1 may include a plurality of sampling terminals 12, and each sampling terminal 12 is arranged along an axial direction X of the sampling component 1. Specifically, the sampling terminal 12 may include a main body portion 121, and the main body portion 121 is sleeved on the outer side of the main body portion 11, so that the sampling terminal 12 is connected with the main body portion 11.
As shown in fig. 3, in a possible design, the sampling component 1 may further include a plug 14, where the plug 14 is used for connecting with the sampling line 13, and may also be used for connecting the sampling line 13 with other components, such as a battery management unit, and after the sampling line 13 collects data of the battery module a, the collected information can be transmitted to the battery management unit connected with the plug 14.
As shown in fig. 4, in the battery module a, the sampling part 1 passes through the connector 22 and is connected to the connector 22, specifically, the sampling terminal 12 of the sampling part 1 is connected to the connector 22, and the two can be connected by a mechanical connection, for example, the two can be connected by a mechanical connection such as clamping.
In this embodiment, this sampling part 1 can realize the mechanical connection between connecting piece 22 and the sampling part 1 to make and need not to adopt welded mode to connect between the two, thereby simplify the connection step of the two, reduce cost, in addition, when needing to change sampling part 1, can remove the mechanical connection of sampling part 1 and connecting piece 22, thereby separate the two, such mode not only can simplify the maintenance step, realizes quick dismantlement and installation.
Meanwhile, as shown in fig. 4, the sampling component 1 provided in the embodiment of the present application can facilitate the connection between the sampling terminal 12 and the connecting member 22 by sleeving the main body portion 121 on the outer side of the main body portion 11, and meanwhile, the connecting member 22 is electrically connected to the electrode terminal 21 of the battery cell 2, so that the sampling of the battery cell 2 is realized through the sampling component 1. In addition, in the embodiment, when the sampling component 1 passes through the connecting piece 22, the sampling component and the connecting piece can be connected in a mechanical connection mode, so that the sampling component and the connecting piece do not need to be welded, the assembling steps of the battery module A are reduced, and the production efficiency of the battery module A is improved. Meanwhile, when the sampling component 1 and the connecting piece 22 do not need to be welded, the damage to the connecting piece 22 and the single battery 2 caused by overhigh temperature in the welding process can be avoided, and the safety of the battery module A is improved.
Specifically, as shown in fig. 4, in one possible design, the connection member 22 is stacked and connected with the electrode terminal 21 of the battery cell 2 along the axial direction X of the sampling member 1, and the connection manner between the connection member 22 and the electrode terminal 21 may be welding.
Each of the battery cells 2 of the battery module a shown in fig. 4 may be a pouch battery, i.e., the positive electrode terminal and the negative electrode terminal of the battery cell 2 protrude from the end portions of the battery module a in the height direction Z, and may have a sheet-like structure, and therefore, the connection member 22 connected to the electrode terminal 21 of the battery cell 2 is also located at the end portion of the battery module a in the height direction Z so as to be connected to the electrode terminal 21. In the present embodiment, the connector 22 and the positive and negative electrode terminals are stacked in the length direction X of the battery module a (the stacking direction is the same as the stacking direction of each battery cell 2), and the stacking direction is the same as the axial direction X of the sampling member 1.
Therefore, when the battery cell 2 in the battery module a is a pouch battery, since the electrode terminal 21 and the connecting member 22 are stacked on each other along the axial direction X of the sampling member 1, in this embodiment, the sampling member 1 can be connected to the sampling member 1 through the connecting member 22 along the axial direction X, and when the sampling member 1 includes a plurality of sampling terminals 12, the sampling member 1 can be connected to the plurality of connecting members 22, so as to improve the utilization rate of the sampling member 1. Based on this, the sampling part 1 in the embodiment of the present application can be applied to the sampling process of the pouch battery.
More specifically, as shown in fig. 5, a second through hole 211 may be provided in the electrode terminal 21, as shown in fig. 6, the first through hole 221 may be provided in the connecting member 22, and the second through hole 211 communicates with the first through hole 221, and as shown in fig. 4 to 6, when the sampling member 1 is mounted, the sampling member 1 may be simultaneously inserted through the second through hole 211 and the first through hole 221, and abutted against the second through hole 211 and the first sidewall 221A of the first through hole 221, so that the sampling member 1 is electrically connected to the battery cell 2, and the sampling member 1 is electrically connected to the connecting member 22; alternatively, in one possible design, the first through hole 221 is provided only at a portion of the connection piece 22 not connected to the electrode terminal 21, and the electrode terminal 21 is not provided with the first through hole, and the sampling member 1 passes through the first through hole 221 and abuts against the first sidewall 221A of the first through hole 221 to electrically connect the sampling member 1 to the connection piece 22, thereby being electrically connected to the electrode terminal 21; alternatively, the second through hole 211 is provided only in the electrode terminal 21, and the sampling member 1 is passed through the second through hole 211 and brought into contact with the second sidewall 211A of the second through hole 211 to electrically connect the sampling member to the electrode terminal.
In this embodiment, when the first through hole 221 is provided in the connecting member 22 and the second through hole is not provided in the electrode terminal 21, the integrity of the electrode terminal 21 can be improved, thereby improving the structural strength of the electrode terminal 21 and increasing the flow area of the electrode terminal.
Meanwhile, the connecting piece 22 is provided with the first through hole 221, and when the sampling component 1 abuts against the first side wall 221A of the first through hole 221, the sampling component 1 can be conveniently limited in installation, so that the position accuracy of the connection of the sampling component 1 and the connecting piece 22 is improved. In addition, when the sampling component 1 is matched with the first through hole 221, interference fit can be adopted, so that the connection stability of the sampling component 1, the single battery 2 and the connecting piece 22 is improved, and the accuracy of the sampling component 1 for sampling the battery module a is improved.
Specifically, as shown in fig. 7, in one possible design, the sampling terminal 12 may further include a connecting portion 122, the connecting portion 122 is connected to a main body portion 121, and both may be integrally formed, as shown in fig. 8, the connecting portion 122 may be used for electrically connecting with the sampling line 13, and the main body portion 121 is used for electrically connecting with the connecting member 22. 0
Therefore, the sampling terminal 12 in this embodiment can be electrically connected to the sampling line 13 and the connector 12 by providing the main body 121 and the connecting portion 122, and the main body 121 can be adapted to the structure of the connector 22, and the connecting portion 122 can be adapted to the structure of the sampling line 13, thereby improving the sampling accuracy.
More specifically, in one possible design, as shown in fig. 9, the projection of the connecting portion 122 is located within the range of the body portion 121 in the axial direction X of the sampling member 1. Such a design can reduce the size of the sampling terminal 12 in the radial direction thereof, thereby reducing the space occupied by the sampling component 1 and improving the space utilization rate of the battery module a, and at the same time, as shown in fig. 10, when the projection of the connecting part 122 is located within the range of the main body part 121, the projection of the sampling line 13 connected with the connecting part 122 is also located within the range of the main body part 121, thereby further reducing the space occupied by the sampling component 1 and improving the space utilization rate of the sampling component 1, at this time, the sampling line 13 can be located inside the main body part 11 of the sampling component 1, thereby reducing the risk of short circuit caused by the contact of the sampling line 13 with other parts of the battery module a, further improving the sampling accuracy, and the sampling line 13 does not affect the electrical connection between the main body part 121 of the sampling terminal 12 and the connecting part 22.
As shown in fig. 10, in one possible design, the body portion 11 may have a first opening 111, the first opening 111 extends along the axial direction X of the sampling member 1, and when the sampling terminal 12 is connected to the body portion 11, a part of the connection portion 122 protrudes into the body portion 11 through the first opening 111, specifically, in one possible design, as shown in fig. 11, at least one end of the first opening 111 penetrates through the body portion 11, and when mounting, the connection portion 122 may protrude into the first opening 111 along the axial direction X of the sampling member through one end of the body portion 11 through the first opening 111, so that the connection portion 122 can partially protrude into the body portion 11.
In this embodiment, the first opening 111 is provided to enable the body portion 11 to deform, when the sampling terminal 12 is connected to the body portion 11, pressure may be applied to the body portion 11 to close or approach the first opening 111 to close, so that the radial dimension of the body portion 11 is reduced, and the body portion 121 of the sampling terminal 12 is further convenient to be sleeved outside the body portion 11.
In a possible design, the body 11 may include a plurality of first openings 111, each first opening 111 may be disposed along a circumferential direction of the body 11, and along an axial direction X of the sampling member 1, an extending distance of each first opening 111 may be different, and each sampling terminal 12 may be located in the corresponding first opening 111, and abut against a side wall of the first opening 111 along the axial direction X of the sampling member 1, so as to limit the sampling terminal 12.
As shown in fig. 10, after the main body portion 121 is sleeved outside the main body portion 11, by releasing the pressure acting on the main body portion 11, the radial dimension of the main body portion 11 is restored by the restoring force, so that the main body portion 11 abuts against the inner wall 121B of the main body portion 121, and the main body portion 11 and the main body portion 121 are connected. In order to improve the reliability of the connection between the main body part and the sampling terminal, in one possible design, the outer diameter of the main body part 11 is larger than the inner diameter of the main body part 121, after the main body part 11 recovers deformation, the main body part 121 and the main body part 11 are in interference fit, so that the interaction force between the main body part 11 and the main body part 11 is increased, the reliability of the previous connection between the main body part 11 and the main body part 121 is improved, the risk of relative displacement between the main body part 121 and the main body part 11 is reduced, and the relative position accuracy of.
As shown in fig. 10, in a possible design, the first opening 111 has a top wall 111A and a bottom wall 111B which are oppositely arranged, and when the sampling terminal 12 is connected to the body portion 11, the connecting portion 122 abuts against both the top wall 111A and the bottom wall 111B.
In the above embodiment, since the top wall 111A and the bottom wall 111B are both abutted to the connection portion 122, the top wall 111A and the bottom wall 111B can apply a force to the connection portion 122, so that the risk of relative movement between the connection portion 122 and the body portion 11 is reduced, the risk of relative movement between the sampling terminal 12 and the body portion 11 is reduced, and the accuracy of the relative position between the sampling terminal 12 and the body portion 11 is improved.
In one possible design, as shown in fig. 10, the connecting portion 122 has a clamping space 122A, and when the sampling line 13 is connected to the connecting portion 122, at least a part of the sampling line 13 is located in the clamping space 122A, that is, the sampling line 13 is clamped in the clamping space 122A of the connecting portion 122, so that the risk of the sampling line 13 falling off the connecting portion 122 can be reduced.
As shown in fig. 12, in a possible design, the connecting portion 122 and the main body portion 121 may be fixedly connected, or may be integrally formed, specifically, along the axial direction X, the connecting portion 122 is disposed on an outer side of the main body portion 121, that is, the connecting portion 122 is located on an outer side of the second inner cavity 121F of the main body portion 121, compared with the connecting portion 122 located inside the second inner cavity 121F, the connecting portion 122 in this embodiment is more convenient to process, and meanwhile, as shown in fig. 13, when the connecting portion 122 is connected to the sampling line 13, there is a more sufficient operating space, it is more convenient to connect the connecting portion 122 and the sampling line 13, and the operating difficulty when the sampling line 13 is connected to the connecting portion 122 is reduced.
As shown in fig. 12, in one possible design, the body part 121 may have a third opening 123, and the third opening 123 penetrates the body part 121 in the axial direction X to enable deformation of the body part 121.
When the main body portion 121 is sleeved outside the main body portion 11, an acting force may be applied to the main body portion 121 to increase the radial dimension of the main body portion 121, the inner diameter of the main body portion 121 is larger than the outer diameter of the main body portion 11, so that the main body portion 121 can be sleeved outside the main body portion 11, after the main body portion 121 is sleeved outside the main body portion 11, the acting force of the main body portion 121 is released, the radial dimension of the main body portion 121 is restored under the action of a restoring force, so that the main body portion 11 abuts against the main body portion 21, so that the main body portion 11 and the main.
Specifically, as shown in fig. 12, in one possible design, the connection portion 122 and the third opening 123 are disposed on opposite sides of the body portion 121 in the radial direction, so that the risk of the sampling line 13 falling off from the first opening 111 and the second opening 122B is reduced, and the structure of the sampling terminal 12 can be optimized, the risk of interference between the connection portion 122 and the third opening 123 is reduced, and the space of the body portion 11 is reasonably utilized.
As shown in fig. 12 to 13, in order to facilitate the connection between the sampling line 13 and the connection portion 122, the connection portion 122 may have a second opening 122B, the second opening 122B penetrates the connection portion 122 along the axial direction X of the sampling component 1, when the sampling line 13 is connected to the sampling terminal 12, the sampling line 13 may enter the clamping space 122A through the second opening 122B, the connection portion 122 may be made of a material capable of generating elastic deformation, and a distance between two opposite side walls of the second opening 122B is smaller than a diameter of the sampling line 13.
When the connecting portion 122 is connected to the sampling line 13, an acting force may be applied to the connecting portion 122 to open the second opening 122B, a distance between two opposite side walls of the second opening 122B is increased, the sampling line 13 may enter the clamping space 122A through the second opening 122B, and then the acting force is released, and the connecting portion 122 is deformed by a restoring force, so as to abut against the sampling line 13 through the side wall of the clamping space 122A, and clamp and fix the sampling line 13.
As shown in fig. 15, in one possible design, in order to further improve the reliability of the connection between the sampling terminal 12 and the body 11, in the body 11 and the body 121 of the sampling terminal 12, one of the first protruding portion 121A and the other of the first protruding portion 121A are provided with a recessed portion 112, the first protruding portion 121A is used for matching with the recessed portion 112, when the sampling terminal 12 is connected with the body 11, at least a part of the first protruding portion 121A can extend into the recessed portion 112 and abut against a side wall of the recessed portion 112, so as to reduce the risk of relative movement between the sampling terminal 12 and the body 11, improve the reliability of the connection between the sampling terminal 12 and the body 11, and improve the reliability of the electrical connection between the sampling terminal 12 and the connector 22.
Specifically, as shown in fig. 15, in one possible design, the first protrusion 121A may be disposed on the inner wall 121B of the main body 121 and protrude toward the inside of the main body 121, the recess 112 may be disposed on the outer wall 113 of the main body 11, and the recess 112 may be a groove or a through hole and recess toward the inside of the main body 11, so that the processing of the main body 11 and the sampling terminal 12 can be facilitated.
It is needless to say that the first projecting portion 121A may be provided on the outer wall 113 of the main body portion 11 and the recessed portion 112 may be provided on the inner wall 121B of the main body portion 121, but in the present embodiment, when the first projecting portion 121A is provided on the inner wall 121B of the main body portion 121 and the recessed portion 112 is provided on the outer wall 113 of the main body portion 11, the outer wall 113 of the main body portion 11 has a large thickness, so that the recessed portion 112 can have a large depth, and the risk that the first projecting portion 121A falls off from the recessed portion 112 can be further reduced.
In addition, the concave portion 112 may be a groove, so that the first protruding portion 121A can be prevented from protruding relative to the main body portion 121, the flatness of the outer side of the main body portion 121 is improved, the main body portion 121 and the connecting member 22 can be connected conveniently, the contact area of the two after being connected is increased, and the flow area is increased.
In a possible design, as shown in fig. 15, the recess 112 may be square, and when the first protrusion 121A is located in the recess 112, the first protrusion 121A can be limited in multiple directions by the side wall of the recess 112, so that the risk that the first protrusion 121A falls off from the recess 112 is reduced, and the reliability of connection between the first protrusion 121A and the recess 112 is improved.
As shown in fig. 15, in one possible design, the outer wall of the main body portion 121 of the sampling terminal 12 may be provided with a second protruding portion 121C and a third protruding portion 121D, and the second protruding portion 121C and the third protruding portion 121D are arranged along the axial direction X, specifically, they may be respectively arranged outside the main body portion 121 along the circumferential direction of the main body portion 121, wherein the outer wall between the second protruding portion 121C and the third protruding portion 121D may be used as a sampling wall 121E, and the sampling wall 121E is used for abutting against the connecting piece 22, so as to electrically connect the sampling terminal 12 and the connecting piece 22.
Specifically, as shown in fig. 15, when the sampling component 1 is connected to the connecting piece 22, at least a portion of the sampling wall 121E is located in the first through hole 221 and abuts against the first side wall 221A, the second protrusion 121C and the third protrusion 121D are respectively located on two opposite sides of the connecting piece 22 connected to the sampling wall 121E, and along the radial direction of the sampling component 1, the diameters of the second protrusion 121C and the third protrusion 121D are larger than the diameter of the first through hole 221, and one sides of the second protrusion 121C and the third protrusion facing the connecting piece 22 can abut against the connecting piece 22, so as to limit the movement of the sampling terminal 12 along the axial direction X of the sampling component, thereby further reducing the risk of relative movement after the sampling component 1 is connected to the connecting piece 22, and improving the sampling accuracy of the sampling component 1.
Specifically, as shown in fig. 15, in order to facilitate the connection of the sampling member 1 to the connector 22, a first guide surface 121g and a second guide surface 121h may be provided on the second boss 121C in the axial direction X of the sampling member 1, and both the first guide surface 121g and the second guide surface 121h are inclined in the axial direction X of the sampling member 1 in opposite directions.
In a possible design, along the direction in which the sampling component 1 is inserted into the first through hole 221, the height of the first guide surface 121g gradually increases, the height of the second guide surface 121h gradually decreases, when the sampling component is installed, the connecting component 22 first contacts with the second guide surface 121h, due to the inclination of the second guide surface 121h, namely, when the sampling component 1 is matched, the radial dimension of the sampling terminal 12 gradually increases, and then the sampling component 1 can be conveniently inserted through the first through hole 221, so that the sampling wall 121E abuts against the first side wall 221A of the first through hole 221, and the connection between the connecting component 22 and the sampling component 1 is realized. Meanwhile, after connection, the second protrusion 121C and the third protrusion 121D are located on two opposite sides of the connecting piece 22 along the axial direction X of the sampling component 1, so that the sampling terminal 12 and the connecting piece 22 are limited, and the relative position accuracy between the two is improved.
In the battery module that this application embodiment provided, when sampling component 1 is connected with connecting piece 22, as long as insert corresponding first through-hole 221 respectively through the axis direction X with sampling component 1 along its self can, need not to weld sampling component 1 and connecting piece 22, and each part of sampling component 1 is connected through mechanical connection's mode equally, the position of sampling terminal 12 can set up according to actual demand simultaneously, make sampling component 1's structure more nimble, the scope of application is wider.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (19)
1. A sampling member (1), characterized by comprising:
a body section (11);
a sampling line (13);
a sampling terminal (12), wherein the sampling terminal (12) is used for being connected with the main body part (11), and a plurality of sampling terminals (12) are arranged along the axial direction (X) of the sampling component (1);
the sampling terminal (12) is used for being electrically connected with the sampling line (13);
the sampling terminal (12) comprises a main body part (121), and the main body part (121) is used for being sleeved on the outer side of the main body part (11).
2. The sampling component (1) according to claim 1, characterized in that the sampling terminal (12) further comprises a connection portion (122), the connection portion (122) being for connection with the body portion (121);
the main body part (121) is used for being connected with the main body part (11), and the main body part (121) is electrically connected with the sampling line (13) through the connecting part (122).
3. The sampling member (1) according to claim 2, characterized in that, in the axial direction (X) of the sampling member (1), the projection of the connection portion (122) is located within the confines of the body portion (121).
4. The sampling member (1) according to claim 3, characterized in that the body portion (11) has a first opening (111), the first opening (111) extending in the axial direction (X) of the sampling member (1), and in the axial direction (X) of the sampling member (1), at least one end of the first opening (111) penetrates the body portion (11);
a portion of the connecting portion (122) is adapted to extend into the first interior cavity (114) of the body portion (11) through the first opening (111).
5. The sampling member (1) according to claim 4, characterized in that said first opening (111) has a top wall (111A) and a bottom wall (111B) arranged opposite;
the connecting portion (122) is configured to abut both the top wall (111A) and the bottom wall (111B).
6. The sampling member (1) according to claim 3, characterized in that the connection portion (122) and the body portion (121) are arranged along an axial direction (X) of the sampling member (1).
7. The sampling member (1) according to any one of claims 2 to 6, characterized in that the connection portion (122) has a clamping space (122A), at least part of the sampling line (13) being located in the clamping space (122A);
the connecting portion (122) has a second opening (122B), and the second opening (122B) penetrates the connecting portion (122) in the axial direction (X) of the sampling member (1).
8. The sampling member (1) according to any one of claims 2 to 6, characterized in that one of the body portion (121) and the body portion (11) is provided with a first raised portion (121A) and the other is provided with a recessed portion (112);
the first protrusion (121A) is configured to mate with the recess (112).
9. The sampling member (1) according to claim 8, characterized in that said body portion (121) has an inner wall (121B), said first protrusion (121A) being provided to said inner wall (121B);
the body portion (11) has an outer wall (113), and the recessed portion (112) is provided in the outer wall (113).
10. The sampling member (1) according to any one of claims 2 to 6, characterized in that the body portion (121) has a third opening (123), the third opening (123) penetrating the body portion (121) in an axial direction (X) of the sampling member (1).
11. The sampling member (1) according to claim 10, characterized in that the connection portion (122) and the third opening (123) are arranged on opposite sides of the body portion (121) in a radial direction of the sampling member (1).
12. The sampling component (1) according to any one of claims 1 to 6, characterized in that the sampling component (1) comprises a plug (14), the plug (14) being adapted to be connected to the sampling line (13).
13. A battery module (A), characterized in that the battery module (A) comprises:
a battery cell (2), the battery cell (2) including an electrode terminal (21);
a connection member (22), the connection member (22) being used to connect the electrode terminals (21) of the battery cells (2);
a sampling member (1), the sampling member (1) being the sampling member (1) according to any one of claims 1 to 12;
wherein the sampling component (1) passes through the connecting piece (22) and is connected with the connecting piece (22).
14. The battery module (a) according to claim 13, wherein the connection members (22) are connected to the electrode terminals (21) of the battery cells (2) and stacked in an axial direction (X) of the sampling member (1);
the connecting piece (22) is provided with a first through hole (221);
the sampling component (1) is used for passing through the first through hole (221), the sampling terminal (12) is used for being electrically connected with the connecting piece (22), and the sampling terminal (12) is electrically connected with the electrode terminal (21) through the connecting piece (22).
15. The battery module (a) according to claim 14, wherein the electrode terminal (21) is provided with a second through-hole (211), the second through-hole (211) communicating with the first through-hole (221);
the sampling member (1) is adapted to pass through the first through hole (221) and the second through hole (211), and the sampling terminal (12) is adapted to be electrically connected to the connecting member (22) and the electrode terminal (21).
16. The battery module (a) of claim 14, wherein the sampling terminal (12) comprises a body portion (121);
the outer wall of the body part (121) comprises a second convex part (121C) and a third convex part (121D), the second convex part (121C) and the third convex part (121D) are arranged along the axial direction (X) of the sampling component (1), and the outer wall of the body part (121) between the second convex part (121C) and the third convex part (121D) is a sampling wall (121E);
the first via (221) has a first sidewall (221A);
the first side wall (221A) is located between the second boss (121C) and the third boss (121D) and is adapted to abut against the sampling wall (121E).
17. The battery module (a) according to claim 16, wherein the second boss (121C) has a first guide surface (121f) and a second guide surface (121g) arranged in the axial direction (X) of the sampling member (1);
the first guide surface (121f) and the second guide surface (121g) are inclined in the axial direction (X) of the sampling member (1) in opposite directions.
18. A battery pack (M), characterized in that the battery pack (M) comprises:
a box (M1), the box (M1) forming a containing cavity (M2);
a battery module (A) according to any one of claims 13 to 17;
wherein the battery module (A) is located in the accommodating cavity (M2).
19. An apparatus (D), characterized in that it comprises:
the battery pack (M) as claimed in claim 18, for providing electrical energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033708.2A CN112310566B (en) | 2020-01-13 | 2020-01-13 | Sampling component, battery module, battery pack and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033708.2A CN112310566B (en) | 2020-01-13 | 2020-01-13 | Sampling component, battery module, battery pack and device |
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| Publication Number | Publication Date |
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| CN112310566A true CN112310566A (en) | 2021-02-02 |
| CN112310566B CN112310566B (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010033708.2A Active CN112310566B (en) | 2020-01-13 | 2020-01-13 | Sampling component, battery module, battery pack and device |
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| WO2024016713A1 (en) * | 2022-07-20 | 2024-01-25 | 宁德时代新能源科技股份有限公司 | Base, voltage sampling assembly and voltage measuring device |
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| CN112310566B (en) | 2022-06-07 |
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