CN223079323U - Sampling device, battery module and battery pack - Google Patents
Sampling device, battery module and battery pack Download PDFInfo
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- CN223079323U CN223079323U CN202422124492.7U CN202422124492U CN223079323U CN 223079323 U CN223079323 U CN 223079323U CN 202422124492 U CN202422124492 U CN 202422124492U CN 223079323 U CN223079323 U CN 223079323U
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Abstract
本实用新型属于电池采样技术领域，公开了一种采样装置、电池模块、电池模组及电池包，一种采样装置，用于对电池模块进行电压采样，电池模块包括至少两个电池单元，每个电池单元包含至少一个电芯，采样装置包括汇流排和采样组件，汇流排设置在相邻的两个电池单元之间，汇流排与每个电池单元的电芯均电连接；采样组件包括采样铜排和绝缘件，采样铜排与汇流排电连接，绝缘件用于对采样铜排进行绝缘。如此，通过使采样铜排和汇流排电连接，能够将电芯传输至汇流排的电压外引，避免占用电池模块内部的空间，并对全部电池模块进行电压采样，降低生产成本，同时便于工作人员进行装配，提高装配效率。
The utility model belongs to the technical field of battery sampling, and discloses a sampling device, a battery module, a battery module and a battery pack. A sampling device is used for sampling the voltage of a battery module. The battery module includes at least two battery cells, and each battery cell includes at least one battery cell. The sampling device includes a bus and a sampling component. The bus is arranged between two adjacent battery cells, and the bus is electrically connected to the battery cells of each battery cell. The sampling component includes a sampling copper bus and an insulating member. The sampling copper bus is electrically connected to the bus, and the insulating member is used to insulate the sampling copper bus. In this way, by electrically connecting the sampling copper bus and the bus, the voltage transmitted from the battery cell to the bus can be externally led, avoiding occupying the space inside the battery module, and sampling the voltage of all battery modules, reducing production costs, and facilitating assembly by staff, thereby improving assembly efficiency.
Description
Technical Field
The present utility model relates to the field of battery sampling technologies, and in particular, to a sampling device, a battery module, and a battery pack.
Background
In order to ensure that the battery can safely and efficiently run, the battery needs to be sampled to obtain various data of the battery, so that the battery state is monitored and controlled by a battery management system, and along with popularization of electric automobiles, the performance requirements on the battery are higher and higher.
The battery voltage is a key parameter for evaluating the state of charge of the battery, the residual electric quantity of the battery can be obtained by sampling the battery, the health condition of the battery can be tracked and detected by analyzing the voltage data, the overcharge or overdischarge of the battery is prevented, the safety performance of the battery is improved, and the service life of the battery is prolonged. The sampling device comprises an FPC (Flexible Printed Circuit Board, a flexible circuit board) board and a sampling structure arranged inside the battery modules, wherein the FPC board is connected with the sampling structure, each battery module is correspondingly connected with one FPC board, so that voltage signals in the battery modules are transmitted to the FPC board through the sampling structure, and voltage data are transmitted to the battery management system through the FPC board.
When the battery contains a plurality of battery modules, all need connect a sampling structure and an FPC board on every battery module for processing cost is higher, because FPC board and sampling quantity are more, not only battery module inner space utilization is lower, still produce the FPC board easily in the manufacturing process and damage, fracture and various circumstances that lead to sampling data unstable or lose this data completely, need carry out reworking or discard the processing to this battery module, lead to making the yields lower, influence sampling effect and assembly efficiency.
Disclosure of utility model
The utility model aims to provide a sampling device, a battery module and a battery pack, so as to solve the problems of poor sampling effect and low assembly efficiency of the battery sampling device.
To achieve the purpose, the utility model adopts the following technical scheme:
According to the first aspect, the sampling device is used for sampling voltage of a battery module, the battery module comprises at least two battery units, each battery unit comprises at least one electric core, the sampling device comprises a busbar, the busbar is arranged between two adjacent battery units and is electrically connected with each electric core of each battery unit, and the sampling assembly comprises a sampling copper bar and an insulating piece, the sampling copper bar is electrically connected with the busbar, and the insulating piece is used for insulating the sampling copper bar.
Preferably, the sampling assembly further comprises a connecting piece, one end of the connecting piece is electrically connected with the busbar, and the other end of the connecting piece is electrically connected with the sampling copper bar.
Preferably, the sampling copper bar is provided with a second connecting hole, and the connecting piece is inserted into the second connecting hole.
Preferably, the insulating part is arranged between the sampling copper bar and the busbar, and comprises a supporting part, and the supporting part is provided with a containing groove for containing the sampling copper bar.
Preferably, the insulator includes a guide portion provided toward the bus bar.
Preferably, a first connecting hole is formed in one side, facing the sampling copper bar, of the busbar, the sampling copper bar passes through the first connecting hole and is electrically connected with the busbar, or the sampling assembly further comprises a connecting piece, one end of the connecting piece is electrically connected with the busbar, the other end of the connecting piece is electrically connected with the sampling copper bar, and the connecting piece passes through the first connecting hole and is electrically connected with the busbar.
Preferably, the connecting member is a blind rivet, and the blind rivet penetrates through the sampling copper bar and is electrically connected with the busbar.
In a second aspect, a battery module includes a housing, at least two battery cells, each of the battery cells including at least one cell, the bus bar and the battery cells being disposed inside the housing, and the insulating member being disposed on the housing, and the sampling device as described above.
In a third aspect, a battery module includes an insulating side plate, an end plate, and at least one battery module as described above, wherein the battery cells in the battery module are electrically connected, and the battery module is disposed in a receiving space formed by the insulating side plate and the end plate.
In a fourth aspect, a battery pack includes a battery case and a battery module or a battery module as described above disposed in the battery case.
The utility model has the beneficial effects that:
A sampling device is used for sampling voltage of a battery module, the battery module comprises at least two battery units, each battery unit comprises at least one electric core, the sampling device comprises a bus bar and a sampling assembly, the sampling assembly is arranged between two adjacent battery units, the bus bar is electrically connected with the electric core of each battery unit, the sampling assembly comprises a sampling copper bar and an insulating piece, the sampling copper bar is electrically connected with the bus bar, and the insulating piece is used for insulating the sampling copper bar. Through making sampling copper bar and busbar electricity be connected, can draw battery module inside voltage outside to realize sampling outside the battery module, avoid taking the inside space of battery module, all sampling copper bars all are connected with the busbar electricity, can sample all battery module, be convenient for the staff assembly, improve assembly efficiency, can practice thrift the materials of FPC board and terminal, reduce manufacturing cost, reduce because of the cracked risk of FPC board, improve the sampling effect.
The utility model further provides a battery module, a battery module and a battery pack, and the sampling device is arranged respectively, so that the voltage of the battery core can be outwards led through the sampling copper bars, voltage signals can be conveniently collected, the sampling and assembling efficiency is improved, the materials of the FPC board and the terminals can be saved, the production cost is reduced, and the risk of fracture of the FPC board is avoided.
Drawings
FIG. 1 is a cross-sectional exploded view of a sampling device according to an embodiment of the present utility model;
fig. 2 is a top view of a battery module according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2 in accordance with one embodiment of the present utility model;
FIG. 4 is an enlarged view of FIG. 3B in an embodiment of the utility model;
fig. 5 is a schematic view illustrating the structure of a battery module according to an embodiment of the present utility model;
Fig. 6 is a schematic view showing a partial structure of a battery module for displaying electric cells according to an embodiment of the present utility model;
Fig. 7 is a schematic view showing a partial structure of a battery module for displaying a bus bar according to an embodiment of the present utility model;
fig. 8 is a schematic view illustrating a structure of a battery module according to an embodiment of the present utility model;
fig. 9 is an exploded view of a battery module according to an embodiment of the present utility model, which is directed to showing a heat insulation pad and a heat conductive film.
In the figure:
1. The bus bar, 11, a first connecting hole, 2, a sampling assembly, 21, a sampling copper bar, 211, a second connecting hole, 22, a connecting piece, 23, an insulating piece, 231, a supporting part, 2311, a containing groove, 232, a guiding part, 2321, a guide hole, 3, a first FPC board, 4, a second FPC board, 5, a battery module, 51, a battery core, 511, a tab, 52, a tab output electrode, 53, a shell, 531, a third connecting hole, 6, a heat insulation pad and 7, a heat conducting film.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Example 1
Referring to fig. 1 to 3, the present utility model provides a sampling device for sampling a voltage of a battery module, the battery module 5 includes at least two battery cells, each battery cell includes at least one battery cell 51, the sampling device includes a bus bar 1 and a sampling assembly 2, the bus bar 1 is disposed between two adjacent battery cells for transmitting a voltage signal of the battery cell, the sampling assembly 2 includes a sampling copper bar 21 and an insulating member 23, the sampling copper bar 21 is electrically connected with the bus bar 1, and the insulating member 23 is used for insulating the sampling copper bar 21.
In this embodiment, the busbar 1 and the sampling copper bar 21 are all arranged in a one-to-one correspondence with the battery modules 5, that is, a busbar 1 and a sampling copper bar 21 are arranged on one battery module 5, the busbar 1 is arranged inside the battery module 5, the sampling copper bar 21 is in a rectangular plate structure, and the sampling copper bar 21 is arranged in the middle of the top surface of the battery module 5. It should be understood that one or more battery modules 5 may be provided, and in this embodiment, a plurality of battery modules 5 are provided, and a plurality of battery modules 5 are arranged in the thickness direction of the battery modules, and the sampling copper bar 21 may collect other signals of the electric core 51, which is not limited to the voltage signal.
It should be noted that, the voltage signal generated by the battery cell 51 can be transmitted to the sampling copper bar 21 through the bus bar 1, and transmitted to the battery management system through the sampling copper bar 21, so as to realize voltage sampling of the plurality of battery modules 5.
So, sampling copper bar 21 is connected with busbar 1 electricity, can realize leading busbar 1's voltage outward, makes sampling assembly 2 can set up in battery module 5 outside, avoids taking battery module 5 inner space, practices thrift manufacturing cost, improves assembly efficiency, avoids increasing FPC board damage or cracked risk because of the FPC board of assembly too much, improves the sampling effect.
Referring to fig. 1 and 2, in some embodiments, the sampling assembly 2 further includes a connection member 22, wherein one end of the connection member 22 is electrically connected to the busbar 1, and the other end is electrically connected to the sampling copper bar 21, for transmitting the voltage signal of the busbar 1 to the sampling copper bar 21.
In this embodiment, the connecting piece 22 is made of a conductive material, which may be a metal material such as a copper alloy material or an aluminum alloy material, and two ends of the connecting piece 22 are respectively abutted against the busbar 1 and the sampling copper bar 21.
In this way, the voltage signal transmitted from the battery core 51 to the busbar 1 can be transmitted to the sampling copper bar 21 through the connecting piece 22 made of the conductive material, and then is transmitted to an external circuit and a battery management system through the sampling copper bar 21, so that the voltage of the battery core 51 is outwards led and the voltage of the battery module 5 is sampled, the sampling copper bar 21 and the busbar 1 keep the same potential, meanwhile, the connecting piece 22 can be used for installing the sampling copper bar 21 on the battery module 5, limiting the relative positions of the sampling copper bar 21 and the battery module 5, avoiding the sampling copper bar 21 from falling off from the battery module 5 to influence the voltage sampling, and improving the sampling effect.
Referring to fig. 1, in some embodiments, the sampling copper bar 21 is provided with a second connection hole 211, and the connector 22 is inserted into the second connection hole 211.
In this way, the connecting piece 22 passes through the second connecting hole 211 and is connected with the sampling copper bar 21, so that the relative position of the sampling copper bar 21 and the connecting piece 22 can be limited, and the sampling copper bar 21 and the busbar 1 can be ensured to be electrically and stably connected through the connecting piece 22, so that the voltage of the battery module 5 is led outwards, and the utilization rate of the internal space of the battery module 5 is improved.
It should be understood that the sampling copper bar 21 may also extend in a direction approaching the busbar 1 and be directly welded to the busbar 1, and is not limited to the connection via the connecting member 22, and it is sufficient to electrically connect the sampling copper bar 21 and the busbar 1.
Referring to fig. 1, in some embodiments, an insulating member 23 is disposed between the sampling copper bar 21 and the busbar 1, and a connecting member 22 sequentially passes through the sampling copper bar 21 and the insulating member 23 and is connected with the busbar 1 to limit the relative positions of the sampling copper bar 21 and the insulating member 23, where the insulating member 23 includes a supporting portion 231, and the supporting portion 231 is provided with a receiving groove 2311 for receiving the sampling copper bar 21.
In this embodiment, the insulating member 23 is made of an insulating material, the sampling copper bar 21 is connected with the insulating member 23 through the connecting member 22, that is, the sampling copper bar 21 is not in direct contact with the busbar 1, the insulating member 23 is detachably connected with the battery module 5, the supporting portion 231 is in a horizontal plate-shaped structure, the accommodating groove 2311 is formed on one side of the supporting portion 231 facing away from the battery module 5, and the cross-sectional area of the accommodating groove 2311 is larger than that of the sampling copper bar 21.
In this way, the insulating piece 23 made of insulating materials can enable the voltage signal of the busbar 1 to be transmitted to the sampling copper bar 21 only through the connecting piece 22, the voltage sampling effect is improved, meanwhile, as the insulating piece 23 can stably support the sampling copper bar 21, the insulating piece 23 is placed at the position of the battery module 5 corresponding to the busbar 1, and the sampling copper bar 21 is placed in the accommodating groove 2311, the positioning and the installation of the sampling copper bar 21 can be facilitated, the position of the sampling copper bar 21 is limited, the assembly efficiency is improved, shaking or shifting of the sampling copper bar 21 in the assembly process is avoided, and the sampling effect is improved.
It can be understood that the material of the insulating member 23 can be flexibly adjusted according to actual needs, in this embodiment, the insulating member 23 is made of plastic material, so that the insulating member 23 is lighter and is convenient for processing and assembly, the thickness of the accommodating groove 2311 can be greater than or less than the thickness of the sampling copper bar 21, and also can be equal to the thickness of the sampling copper bar 21, in this embodiment, the thickness of the accommodating groove 2311 is less than the thickness of the sampling copper bar 21, so that the connecting member 22 can be assembled, and the thickness of the accommodating groove 2311 can be flexibly adjusted according to actual needs without excessive limitation.
Referring to fig. 1, in some embodiments, the insulating member 23 includes a guide portion 232, the guide portion 232 being disposed toward the bus bar 1 for guiding the movement of the connection member 22 toward the bus bar 1 and assembling the insulating member 23 on the battery module 5, and further, the guide portion 232 is provided with a guide hole 2321 through which the connection member 22 is connected with the sampling copper bar 21.
The guide part 232 and the support part 231 are integrally formed, when the connecting member 22 passes through the guide hole 2321 and is connected with the sampling copper bar 21, the connecting member 22 is coaxial with the guide hole 2321, the length of the connecting member 22 is greater than that of the guide part 232, and when the support part 231 is assembled on the battery module 5, the guide part 232 extends into the battery module 5.
In this way, the guiding portion 232 can guide the moving direction of the connecting piece 22, so that the connecting piece 22 can be conveniently and rapidly electrically connected with the busbar 1, the assembly efficiency is improved, the guiding portion 232 can protect the portion of the connecting piece 22 located in the guiding hole 2321, the short circuit and other conditions are avoided, and the sampling efficiency and the safety performance of the sampling device are improved.
Referring to fig. 1, in some embodiments, a first connection hole 11 is formed in a side of the busbar 1 facing the sampling copper bar 21, the sampling copper bar 21 passes through the first connection hole 11 and is connected with the busbar 1, or one end of a connection piece 22 is electrically connected with the busbar 1, the other end is electrically connected with the sampling copper bar 21, and the connection piece 22 passes through the first connection hole 11 and is electrically connected with the busbar 1.
In this embodiment, the connecting piece 22 passes through the first connecting hole 11 and is connected with the busbar 1, the diameter of the first connecting hole 11 is matched with the diameter of the connecting piece 22, and when the connecting piece 22 is assembled on the busbar 1, one end of the connecting piece 22, which is away from the sampling copper bar 21, is located inside the busbar 1.
In this way, the connecting piece 22 passes through the first connecting hole 11 and is connected with the busbar 1, so that the relative positions of the connecting piece 22 and the busbar 1 can be fixed, the relative positions of the sampling copper bar 21, the insulating piece 23 and the busbar 1 are further limited, the sampling copper bar 21 and the busbar 1 are connected through the connecting piece 22, and meanwhile, voltage signals can be stably transmitted to the sampling copper bar 21 through the connecting piece 22, so that the sampling effect is improved.
It can be understood that the sampling copper bar 21 can also extend into the battery module 5 and be directly electrically connected with the busbar 1, and the specific connection mode can be flexibly adjusted according to actual needs, so that the sampling copper bar 21 can sample the voltage signal output by the electric core 51, and details are not described herein.
Referring to fig. 1, in some embodiments, the connector 22 is a blind rivet that passes through the sampling copper bar 21 and is electrically connected to the busbar 1 for limiting the relative positions of the sampling copper bar 21 and the busbar 1 and transmitting the voltage signal of the busbar 1 to the sampling copper bar 21. Wherein the guide hole 2321 has a diameter larger than that of the first connection hole 11.
The guide portion 232 of the insulator 23 is inserted into the battery module 5, the guide portion 232 is positioned inside the battery module 5, the support portion 231 is abutted against the battery module 5 at this time, the sampling copper bar 21 is placed in the accommodating groove 2311, and the blind rivet is sequentially inserted through the second connection hole 211, the guide portion 232 and the first connection hole 11 to connect and restrict the relative positions of the sampling copper bar 21, the insulator 23 and the bus bar 1, thereby realizing the assembly of the sampling device.
So, self-plugging rivet can connect sampling copper bar 21, insulating part 23, busbar 1 fast, improves assembly efficiency, and makes sampling copper bar 21 and busbar 1 realize the electricity and be connected, makes the voltage of busbar 1 draw outward, reduces the occupation to battery module 5 inner space, improves the outside sampling effect of battery module 5, can reduce the use of consumptive material when realizing voltage sampling simultaneously, practices thrift manufacturing cost.
It can be understood that the connecting piece 22 may also be a bolt, the first connecting hole 11 is a threaded hole corresponding to the bolt, and a self-plugging rivet is adopted in this embodiment to realize quick connection between the sampling copper bar 21 and the busbar 1, and the specific structure of the connecting piece 22 may be adjusted according to actual needs, which is not excessively listed here.
Referring to fig. 3 to 6, the present utility model further provides a battery module, which includes a housing 53, at least two battery units and a sampling device, wherein each battery unit includes at least one electric core 51, the bus bar 1 and the battery units are disposed inside the housing 53, and the insulating member 23 is disposed on the housing 53.
Further, referring to fig. 1, the bus bar is provided with a first connection hole 11, the housing 53 is provided with a third connection hole 531 corresponding to the first connection hole 11, and the connector 22 passes through the third connection hole 531 and the first connection hole 11 and is electrically connected to the bus bar 1.
In this embodiment, referring to fig. 7, the battery cells 51 are soft package battery cells, the housing 53 is in a cuboid structure, four battery cells 51 are arranged in one housing 53, the four battery cells 51 are arranged in parallel and in series, the tabs with the same electrical property of the battery cells 51 are located on the same side, the bus bar 1 is in an inverted U-shaped structure, and the bus bar 1 is electrically connected with the four battery cells 51.
In this way, the connecting piece 22 sequentially passes through the third connecting hole 531 and the first connecting hole 11 to connect the busbar 1 and the sampling copper bar 21, so that a sufficient distance is left between the housing 53 and the busbar 1, and then the electrical gap meets the requirement, and the sampling effect and the safety are improved.
It can be understood that one electric core 51 can be arranged in the battery unit, the bus bar 1 is electrically connected with the electric cores 51, two electric cores 51 can be arranged in the battery unit, the two electric cores 51 are arranged along the length direction or the width direction of the electric cores 51, the bus bar 1 is electrically connected with the two electric cores 51, the number of the electric cores 51 can be flexibly adjusted according to actual needs, and the embodiment is not limited to the above.
Referring to fig. 1 to 3, the present utility model further provides a battery module, which includes an insulating side plate (not shown), an end plate (not shown), and at least one battery module 5, wherein battery cells in the battery module are electrically connected, and the battery module 5 is disposed in a receiving space formed by the insulating side plate and the end plate.
Referring to fig. 3, in some embodiments, the battery module 5 is connected with a first FPC board 3, the battery module 5 is provided with more than two, the first FPC board 3 is electrically connected with sampling copper bars 21 on all the battery modules 5 for transmitting voltage signals of all the battery modules 5, the length direction of the first FPC board 3 is parallel to the arrangement direction of the battery modules 5, the first FPC board 3 is disposed on one side of the sampling copper bars 21 away from the battery modules 5, and nickel sheets (not shown in the drawing) are disposed on the first FPC board 3 and are connected with the sampling copper bars 21 by welding.
Wherein, a plurality of battery modules 5 are arranged along the direction perpendicular to the length direction of the battery modules 5, a plurality of sampling copper bars 21 are all correspondingly arranged at the middle position of the top surface of the shell 53, the length direction of the first FPC board 3 is parallel to the arrangement direction of the battery modules 5, and the cross-sectional area of the accommodating groove 2311 is greater than the cross-sectional area of the sampling copper bars 21, so that the first FPC board 3 is welded with the sampling copper bars 21.
So, after the inside voltage of every battery module 5 all draws outward through sampling copper bar 21, carry to battery management system via first FPC board 3, can realize the voltage sampling to the battery, and carry the signal after the sampling to battery management system and handle, the voltage signal of whole battery is passed through a first FPC board 3 transmission, can save the material use of FPC board and the use of binding post that sets up on the FPC board, practice thrift manufacturing cost and the holistic occupation space of battery, can make first FPC board 3 be connected with busbar 1 electricity through sampling copper bar 21 is stable again, improve assembly efficiency.
Further, a heat conducting film 7 is further disposed between every two adjacent battery modules 5, a heat insulating pad 6 is disposed between each group of battery modules 5, and the number of the battery modules 5 in each group can be adjusted according to actual needs, which is not excessively listed here.
Referring to fig. 3, in some embodiments, the battery modules 5 further include tab output poles 52, two ends of each battery module 5 are respectively provided with one tab output pole 52, the sampling device further includes two second FPC boards 4, two second FPC boards 4 are respectively provided at two ends of the battery module 5 and are electrically connected with all tab output poles 52 on the same side. In the present embodiment, the longitudinal direction of the second FPC board 4 is parallel to the arrangement direction of the battery modules 5.
In this way, the second FPC connected to the tab output electrode 52 can transmit other signals (e.g., current signals, temperature signals, etc.) output by the tab output electrode 52, thereby implementing sampling of the battery and transmission of the sampled signals to the battery management system.
Referring to fig. 8 and 9, the present utility model further provides a battery pack including a battery case and a battery module or a battery module disposed in the battery case.
Example two
The difference from the first embodiment is that the battery modules 5 are provided in plurality, one supporting portion 231 is provided, a plurality of accommodating grooves 2311 are formed in one supporting portion 231, a plurality of guiding portions 232 are connected to the plurality of bus bars 1 in a one-to-one correspondence manner, one supporting portion 231 is connected to all the battery modules 5, and the length direction of the supporting portion 231 is parallel to the length direction of the first FPC board 3.
In this way, after the plurality of battery modules 5 are orderly arranged, the plurality of guide portions 232 are respectively inserted into the third connecting holes 531, so that the positions of the supporting portions 231 on the plurality of battery modules 5 can be rapidly limited, the sampling copper bars 21 can be conveniently and sequentially assembled into the accommodating grooves 2311, and the assembly efficiency is improved.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. A sampling device for voltage sampling of a battery module (5), the battery module (5) comprising at least two battery cells, each of the battery cells comprising at least one cell (51), the sampling device comprising:
A busbar (1) arranged between two adjacent battery units, wherein the busbar (1) is electrically connected with each battery unit cell (51);
Sampling subassembly (2), sampling subassembly (2) include sampling copper bar (21) and insulating part (23), sampling copper bar (21) with busbar (1) electricity is connected, insulating part (23) are used for right sampling copper bar (21) insulates.
2. The sampling device according to claim 1, characterized in that the sampling assembly (2) further comprises a connection piece (22), one end of the connection piece (22) is electrically connected with the busbar (1), and the other end is electrically connected with the sampling copper bar (21).
3. The sampling device according to claim 2, characterized in that the sampling copper bar (21) is provided with a second connection hole (211), and the connecting piece (22) is inserted into the second connection hole (211).
4. The sampling device according to claim 1, wherein the insulating member (23) is disposed between the sampling copper bar (21) and the busbar (1), the insulating member (23) comprises a supporting portion (231), and the supporting portion (231) is provided with a receiving groove (2311) for receiving the sampling copper bar (21).
5. The sampling device according to claim 1, characterized in that the insulation (23) comprises a guide (232), which guide (232) is arranged towards the busbar (1).
6. The sampling device according to claim 1, characterized in that a first connection hole (11) is provided on a side of the busbar (1) facing the sampling copper bar (21), the sampling copper bar (21) passes through the first connection hole (11) and is electrically connected with the busbar (1), or the sampling assembly (2) further comprises a connecting piece (22), one end of the connecting piece (22) is electrically connected with the busbar (1), the other end is electrically connected with the sampling copper bar (21), and the connecting piece (22) passes through the first connection hole (11) and is electrically connected with the busbar (1).
7. The sampling device according to claim 2, characterized in that the connection piece (22) is a blind rivet which passes through the sampling copper bar (21) and is electrically connected to the busbar (1).
8. Battery module, characterized in that it comprises a housing (53), at least two battery cells, each of which contains at least one cell (51), and a sampling device according to any of claims 1-7, the busbar (1) and the battery cells being arranged inside the housing (53), the insulation (23) being arranged on the housing (53).
9. A battery module, characterized by comprising an insulating side plate, an end plate and at least one battery module (5) according to claim 8, wherein the battery cells in the battery module (5) are electrically connected, and the battery module (5) is disposed in a receiving space formed by the insulating side plate and the end plate.
10. A battery pack characterized by comprising a battery case and the battery module (5) according to claim 8 or the battery module according to claim 9 provided in the battery case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422124492.7U CN223079323U (en) | 2024-08-30 | 2024-08-30 | Sampling device, battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422124492.7U CN223079323U (en) | 2024-08-30 | 2024-08-30 | Sampling device, battery module and battery pack |
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| CN223079323U true CN223079323U (en) | 2025-07-08 |
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| CN202422124492.7U Active CN223079323U (en) | 2024-08-30 | 2024-08-30 | Sampling device, battery module and battery pack |
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| Country | Link |
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| CN (1) | CN223079323U (en) |
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