CN219696525U - Sampling assembly, battery and power utilization device - Google Patents

Abstract

The utility model discloses a sampling assembly, a battery and an electric device. The sampling assembly comprises a sampling circuit board and a sampling connecting piece, wherein the sampling connecting piece comprises a connecting part and a plugging part, and the connecting part is used for being connected with a sampling wire harness. The plug-in part is electrically connected with the sampling circuit board, and at least part of the plug-in part is inserted into the sampling circuit board and is clamped with the sampling circuit board. The plug-in part is bent relative to the connecting part, so that a certain angle is formed between the plug-in part and the connecting part. The connecting portion is connected with the sampling wire harness, the inserting portion is connected with the sampling circuit board in a clamping mode, the inserting portion is bent relative to the connecting portion, non-rigid connection is formed between the sampling wire harness and the sampling circuit board, the sampling wire harness can have relative displacement in a certain range relative to the sampling circuit board, and under the condition that the battery monomer deforms or moves in a small range, stability of signal transmission between the sampling wire harness and the sampling circuit board is improved, and reliability of a sampling process is improved.

Description

Sampling assembly, battery and power utilization device

Technical Field

The utility model relates to the field of batteries, in particular to a sampling assembly, a battery and an electric device.

Background

Batteries are widely used in various electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric tools, etc., and may include cadmium-nickel batteries, hydrogen-nickel batteries, lithium ion batteries, secondary alkaline zinc-manganese batteries, etc.

At present, besides the efficiency of the battery, how to improve the reliability of the battery operation process is one of the important research points in the field.

Disclosure of Invention

In view of the above, the present utility model provides a sampling assembly, a battery, and an electric device, which can improve the stability of connection between the sampling assembly and a battery cell, improve the mounting efficiency of the sampling assembly, and improve the reliability of the battery.

In a first aspect, the utility model provides a sampling assembly, which comprises a sampling circuit board and a sampling assembly, wherein a sampling connecting piece comprises a connecting part and a plugging part. The connecting portion is used for being connected with the sampling wire harness. The plug-in part is electrically connected with the sampling circuit board, and at least part of the plug-in part is inserted into the sampling circuit board and is clamped with the sampling circuit board. The plug-in part is bent relative to the connecting part, so that a certain angle is formed between the plug-in part and the connecting part.

According to the technical scheme, the connecting part is connected with the sampling wire harness, the inserting part is clamped with the sampling circuit board, the inserting part is bent relative to the connecting part, non-rigid connection is formed between the sampling wire harness and the sampling circuit board, the sampling wire harness can have a certain range of relative displacement relative to the sampling circuit board, and under the condition that a battery monomer is deformed or moves in a small range, the stability of signal transmission between the sampling wire harness and the sampling circuit board is improved, and the reliability of a sampling process is improved.

In some embodiments, the sampling circuit board is provided with a connection hole, and the plugging portion comprises a support plate and a plug board. The support plate is connected with the connecting part. The plugboard is connected with one end of the supporting plate, which is far away from the connecting part, and the plugboard is in interference fit with the connecting hole of the sampling circuit board. In the structure, the supporting plate improves the connection stability of the plugboard and the connecting part, the connection efficiency of the plugboard and the connection mode of the interference fit of the sampling circuit board is high, and the connection stability is strong.

In some embodiments, the plugboard is provided with a through relief hole. The deformation that the hole of stepping down can absorb plugboard and sampling circuit board interference fit and produce is set up, improves plugboard connection efficiency.

In some embodiments, the end of the plug plate remote from the support plate is arcuate. With the structure, the arc-shaped end part can reduce the resistance of the inserting part to be inserted into the connecting hole, and the mounting efficiency of the inserting plate and the sampling circuit board in a clamping manner is improved.

In some embodiments, the splice plate includes a first arcuate segment and a second arcuate segment. The first arc section is connected to the supporting plate. The second arc section is connected to the first arc section. Wherein, form the joint groove between second arc section and the first arc section, the joint groove is used for with sampling circuit board joint. In the structure, through setting up the second arc section, the plugboard of being convenient for inserts the connecting hole, and the first arc section can restrict the plugboard and insert the degree of depth of connecting hole, restricts the displacement of plugboard relative sampling circuit board, improves the connection stability of sampling connecting piece and sampling circuit board.

In some embodiments, the connection portion includes a connection plate and a press arm. The connecting plate is connected with the plug-in connection. The pressing arms are arranged on two opposite sides of the connecting plate and used for propping against the sampling wire bundles. In the technical scheme, the connecting plate can provide a stable installation surface for the sampling wire harness, the pressing arms and the connecting plate are matched to limit the displacement of the sampling wire harness, and the strength and stability of connection of the connecting part and the sampling wire harness are improved.

In some embodiments, the sampling assembly further comprises a temperature sensor. The temperature sensor is arranged on the sampling circuit board and is electrically connected with the sampling circuit board.

In the above technical scheme, the sampling connecting piece plug-in part is buckled for the connecting part to make and be certain angle between plug-in part and the connecting plate, form non-rigid connection between sampling pencil and the sampling circuit board, sampling pencil can have the relative displacement of certain scope for the sampling circuit board, under the condition that battery monomer takes place deformation or small scale and removes, improved the stability of signal transmission between sampling pencil and the sampling circuit board, improved the reliability of sampling process. And the temperature sensor is arranged on the shell of the battery cell, so that the accuracy and the efficiency of the temperature sensor for acquiring the temperature change of the battery cell can be improved.

In some embodiments, the plug portion passes through the connection hole and is clamped with the sampling circuit board. The technical scheme includes that the sampling wire harness is arranged on one side, away from the battery cells, of the sampling circuit board, the distance between the sampling circuit board and the battery cell shell can be reduced, and the efficiency and accuracy of acquiring the temperature information of the battery cells by the temperature sensor are improved.

In some embodiments, the length of the connection hole along the first direction is L1, and the maximum dimension of the plugging portion along the first direction is L2, where L2 > L1. According to the structure, through interference fit between the plug-in connection part and the connecting hole, the connection strength and the connection stability of the sampling connecting piece and the sampling circuit board are improved.

In some embodiments, the sampling assembly further comprises a limiting frame arranged on the sampling circuit board, wherein the limiting frame is provided with a containing cavity for containing the temperature sensor. And the limiting frame is arranged, so that the temperature sensor moves relative to the battery in a limited range of the limiting frame under the conditions that the battery is deformed and is subjected to external force, and the fault probability of the temperature sensor is reduced.

In some embodiments, the sampling assembly further comprises a weld disposed between the temperature sensor and the sampling circuit board. Through setting up the welded part, improved intensity and the stability of being connected between stable temperature sensor and the sampling circuit board.

In some embodiments, the sampling assembly further comprises an insulator disposed in the receiving cavity, the insulator comprising a first insulator portion disposed between the temperature sensor and the sampling circuit board. Through setting up the insulating part, through insulating between single battery and the temperature sensor, prevent single battery electric leakage.

In some embodiments, the insulating member further includes a second insulating portion disposed between the limit frame and the temperature sensor. And the second insulation part is arranged, so that the insulation performance between the limiting frame and the temperature sensor is improved.

In a second aspect, the present utility model provides a battery comprising a battery cell, a sampling harness, and a sampling assembly as in the above embodiments. The battery cell includes a housing. The sampling assembly is arranged on the shell to acquire temperature information of the battery cell. The sampling harness is connected to the connection portion of the sampling assembly, and the sampling harness is used for transmitting temperature information to the battery management system.

In a third aspect, the present utility model provides an electrical device comprising a battery according to the above embodiments, the battery being configured to provide electrical energy.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a vehicle according to an embodiment of the present utility model;

fig. 2 is an exploded view of a battery according to an embodiment of the present utility model;

fig. 3 is an exploded view of a battery cell according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a sampling assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a sampling connector according to an embodiment of the present utility model;

FIG. 6 is a schematic structural view of a plugging portion of a sampling connector according to an embodiment of the present utility model;

FIG. 7 is an exploded view of a sampling assembly according to an embodiment of the present utility model;

FIG. 8 is an exploded view of a sampling assembly according to an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a sampling circuit board according to an embodiment of the present utility model;

FIG. 10 is an exploded view of a sampling assembly according to another embodiment of the present utility model;

fig. 11 is an exploded view of a sampling assembly according to a further embodiment of the present utility model.

Detailed description of the reference numerals

1. A vehicle; x, a first direction; 11. an electrode assembly; 2. a battery; 10. an electrode unit; 20. a housing; 21. an opening; 24. a pressure release mechanism; 25. an electrode terminal; 30. an end cap assembly; 40. a housing; 3. a controller; 4. a motor; 5. a case; 51. a first portion; 52. a second portion; 53. an accommodation space; 7. a battery cell; 8. a sampling connection; 801. a connection part; 802. a plug-in part; 803. a support plate; 804. a plug board; 805. a relief hole; 806. a first arcuate segment; 807. a second arcuate segment; 808. a connecting plate; 809. a pressing arm; 810. a clamping groove; 6. a sampling assembly; 601. a sampling circuit board; 602. sampling a wire harness; 603. a temperature sensor; 604. a first surface; 605. a second surface; 606. a connection hole; 607. a limit frame; 608. a welding part; 609. an insulating member; 610. a first insulating portion; 611. and a second insulating portion.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The embodiment of the utility model provides an electric device using a battery as a power supply, wherein the electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiments will take an electric device according to an embodiment of the present utility model as an example of a vehicle.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the utility model. The vehicle 1 can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extending vehicle. The interior of the vehicle 1 is provided with a battery 2, and the battery 2 may be provided at the bottom or at the head or at the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery 2 may serve as an operating power source of the vehicle 1. The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being arranged to control the battery 2 to power the motor 4, for example for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the utility model, the battery 2 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

Referring to fig. 2, fig. 2 is an exploded view of a battery 2 according to some embodiments of the present utility model. The battery 2 includes a case 5 and a battery cell 7, and the battery cell 7 is accommodated in the case 5. The case 5 is used for providing an accommodating space for the battery unit 7, and the case 5 may have various structures.

In some alternative embodiments, the case 5 includes a first portion 51 and a second portion 52, the first portion 51 and the second portion 52 being mutually covered, the first portion 51 and the second portion 52 together defining an accommodation space 53 for accommodating the battery cell 7. The second portion 52 may be a hollow structure with one end opened, the first portion 51 may be a plate-shaped structure, and the first portion 51 covers the opening side of the second portion 52, so that the first portion 51 and the second portion 52 together define the accommodating space 53; the first portion 51 and the second portion 52 may be hollow structures each having an opening at one side, and the opening side of the first portion 51 is engaged with the opening side of the second portion 52. Of course, the case 5 formed by the first portion 51 and the second portion 52 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 2, the number of the battery cells 7 may be plural, and the plural battery cells 7 may be connected in series or parallel or in series-parallel, and the series-parallel refers to that the plural battery cells 7 are connected in series or parallel. The battery cells 7 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the battery cells 7 is accommodated in the box 5. Of course, the battery 2 may also be a battery module form formed by connecting a plurality of battery cells 7 in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in the case 5. The battery 2 may also include other structures, for example, the battery 2 may also include a bus member for making electrical connection between the plurality of battery cells 7.

Wherein each battery cell 7 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 7 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating an exploded structure of a battery cell 7 according to some embodiments of the utility model. The battery cell 7 refers to the smallest unit constituting the battery 2. As shown in fig. 3, the battery cell 7 includes a case 40, an electrode assembly 11, and other functional components.

The housing 40 may include an end cap assembly 30 and a shell 20. The end cap assembly 30 refers to a member that is capped at the opening of the case 20 to isolate the internal environment of the battery cell 7 from the external environment. Without limitation, the shape of the end cap assembly 30 may be adapted to the shape of the housing 20 to mate with the housing 20. Alternatively, the end cap assembly 30 may be made of a material having a certain hardness and strength (such as an aluminum alloy), so that the end cap assembly 30 is not easily deformed when being impacted by extrusion, so that the battery cell 7 can have a higher structural strength, and the safety performance can be improved. The end cap assembly 30 may be provided with functional components such as electrode terminals 25. The electrode terminals 25 may be used to be electrically connected with the electrode assembly 11 for outputting or inputting electric power of the battery cells 7.

In some embodiments, the end cap assembly 30 may also be provided with a pressure relief mechanism 24 for relieving the internal pressure of the battery cells 7 when the internal pressure or temperature reaches a threshold. The material of the end cap assembly 30 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present utility model is not limited thereto. In some embodiments, insulating members may also be provided on the inside of the end cap assembly 30, which may be used to isolate electrical connection members within the housing from the end cap assembly to reduce the risk of short circuits. By way of example, the insulating member may be plastic, rubber, or the like.

The housing 20 is an assembly for mating with the end cap assembly 30 to form the internal environment of the battery cell 7. Wherein the formed internal environment may be used to house the electrode assembly 11, electrolyte, and other components. The housing 20 and the end cap assembly 30 may be separate components, and an opening 21 may be provided in the housing 20, with the end cap assembly 30 covering the opening at the opening 21 to create the interior environment of the battery cell 7. It is also possible to integrate the end cap assembly 30 and the housing 20, but specifically, the end cap assembly 30 and the housing 20 may form a common connection surface before other components are put into the housing, and the end cap assembly is then covered on the housing 20 when it is necessary to encapsulate the inside of the housing 20. The housing 20 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 20 may be determined according to the specific shape and size of the electrode assembly. The material of the housing 20 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present utility model.

The electrode assembly 11 is a component in which electrochemical reactions occur in the battery cells 7. One or more electrode assemblies 11 may be contained within the case 20. The plurality of electrode assemblies 11 constitute an electrode unit 10. The electrode assembly 11 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet having the active material constitute the main body portion of the electrode assembly 11, and the portions of the positive electrode sheet and the negative electrode sheet having no active material constitute the tabs, respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected to the electrode terminal 25 to form a current loop.

With the development of battery technology, operational reliability of batteries is also becoming more and more important. In the running process of the battery driving electric device, the temperature, the pressure and the like in the battery monomer can change, so that the temperature and the like of the battery monomer need to be monitored in real time to obtain the working condition of the battery monomer, and the running stability of the whole battery is improved. The battery cell is generally provided with a temperature sensor, a sampling circuit board and other components to acquire the temperature information of the battery, and the temperature information of the temperature sensor can be transmitted to a battery management system of the battery 2 through a sampling wire harness, and the battery management system monitors the running condition of the battery cell.

In the related art, a sampling wire harness of a battery cell is fixed with a sampling circuit board on the battery cell through rigid connection such as welding. Under the conditions of deformation, impact or vibration and the like of the battery monomer, the rigid connection can be broken, and the connection failure of the sampling wire harness and the temperature sensor can not lead to the transmission of the temperature information of the battery monomer.

Based on the above consideration, in order to improve the stability of connection between the sampling harness and the battery cell, the embodiment of the utility model provides a sampling assembly.

Referring to fig. 4 to 5, fig. 4 is a schematic structural diagram of a sampling assembly 6 according to an embodiment of the utility model. Fig. 5 is a schematic structural view of a sampling connector 8 according to an embodiment of the present utility model.

As shown, the sampling assembly 6 provided by the embodiment of the present utility model includes a sampling circuit board 601 and a sampling connector 8. The sampling connector 8 includes a connection portion 801 and a plug portion 802, the connection portion 801 being for connection with the sampling harness 602. The plugging portion 802 is electrically connected with the sampling circuit board 601, and at least part of the plugging portion 802 is inserted into the sampling circuit board 601 and is clamped with the sampling circuit board 601. The plugging portion 802 is bent with respect to the connection portion 801, so that a certain angle is formed between the plugging portion 802 and the connection portion 801.

The sampling circuit board 601 may be a PCB (Printed Circuit Board) circuit board, and a circuit is provided on the sampling circuit board 601, which can convert a temperature signal of the temperature sensor 603 into an electrical signal and transmit the electrical signal through the sampling harness 602. The sampling harness 602 may be a wire having a communication function, and the sampling harness 602 may include a conductor portion and an insulating layer surrounding the conductor portion. The conductor portion of the sampling harness 602 is electrically connected to the connection portion 801 to achieve signal transmission.

The sampling connector 8 is used for electrically connecting the sampling wire harness 602 with the sampling circuit board 601, and needs to perform stable mechanical connection between the sampling wire harness 602 and the sampling circuit board 601, and the plugging portion 802 and the connecting portion 801 can be made of conductive materials with certain strength. For example, it can be made of stainless steel, alloy, or the like. The connection portion 801 and the sampling harness 602 may be connected by welding, cohesive connection, or the like. The plug-in portion 802 is connected to the sampling circuit board 601 in a clamping manner.

In the technical scheme of the embodiment of the utility model, the connecting part 801 is connected with the sampling wiring harness 602, the plugging part 802 is clamped with the sampling circuit board 601, the plugging part 802 bends relative to the connecting part 801, non-rigid connection is formed between the sampling wiring harness 602 and the sampling circuit board 601, the bending angle between the connecting part 801 and the plugging part 802 can be changed within a certain range, therefore, the sampling wiring harness 602 can have a certain range of relative displacement relative to the sampling circuit board 601, the connection between the sampling wiring harness 602 and the connecting part 801 is stably improved under the condition that the battery unit 7 deforms or moves within a small range, and the connection stability between the plugging part 802 and the sampling circuit board 601 is also improved, so that the stability of signal transmission between the sampling wiring harness 602 and the sampling circuit board 601 is improved, and the reliability of the sampling process is improved.

In some alternative embodiments, plug portion 802 is an integral structure with connection portion 801. The plugging portion 802 is bent with respect to the connecting portion 801, and the above-described structure may be two portions formed by bending a metal plate, which is easy to manufacture.

In some embodiments of the present utility model, the sampling circuit board 601 is provided with a connection hole 606, and the socket 802 includes a support plate 803 and a socket board 804. The support plate 803 is connected to the connection portion 801. The plug board 804 is connected to an end of the support plate 803 away from the connection portion 801, and the plug board 804 is interference fit with the connection hole 606 of the sampling circuit board 601.

The interference fit is a process of using the elasticity of the material of the plug board 804 to make the plug board 804 with a larger size adapt to the connection hole 606 with a smaller size, and the plug board 804 deforms to form a tight connection with the sampling circuit board 601.

The above structure can improve the structural strength and stability of connection between the plug board 804 and the sampling circuit board 601, and can realize the electrical connection between the plug board 804 and the sampling circuit board 601 to stably transmit temperature signals. The support plate 803 improves the stability of the connection of the plug board 804 with the connection portion 801. Therefore, the plug board 804 is in interference fit with the sampling circuit board 601, so that the connection efficiency and the structural stability are improved.

In some embodiments of the present utility model, the plug board 804 is provided with a relief hole 805 therethrough. The yielding holes 805 are arranged to absorb deformation generated by interference fit between the plug board 804 and the sampling circuit board 601, so that the connection efficiency of the plug board 804 is improved.

In some alternative embodiments, relief holes 805 are circular, oval, semi-circular, or the like. The above structure can more uniformly absorb the deformation of the plug board 804, and improves the connection stability of the plug portion 802 and the sampling circuit board 601.

In some embodiments of the present utility model, the end of the plug board 804 remote from the support plate 803 is arc-shaped. With the above structure, the arc-shaped end portion can reduce the resistance of the plugging portion 802 inserted into the connection hole 606, and improve the mounting efficiency of the plugging plate 804 and the sampling circuit board 601.

Fig. 6 is a schematic structural diagram of a plugging portion 802 of the sampling connector 8 according to an embodiment of the present utility model. As shown in fig. 6, in some embodiments of the utility model, the pinboard 804 includes a first arcuate segment 806 and a second arcuate segment 807. The first arcuate segment 806 is connected to the support plate 803. The second arcuate segment 807 is connected to the first arcuate segment 806. Wherein, a clamping groove 810 is formed between the second arc-shaped section 807 and the first arc-shaped section 806, and the clamping groove 810 is used for clamping with the sampling circuit board 601.

In the above structure, the second arc-shaped section 807 is provided to facilitate the insertion of the plug board 804 into the connection hole 606, and the first arc-shaped section 806 can limit the depth of the plug board 804 inserted into the connection hole 606, limit the displacement of the plug board 804 relative to the sampling circuit board 601, and improve the connection stability of the sampling connector 8 and the sampling circuit board 601.

As shown in fig. 4, in some embodiments of the utility model, the connection 801 includes a connection plate 808 and a press arm 809. The connection plate 808 is connected to the plug portion 802. The pressing arms 809 are disposed on two opposite sides of the connection board 808, and the pressing arms 809 are used to press the sampling harness 602.

In the above technical scheme, the connecting plate 808 can provide a stable mounting surface for the sampling harness 602, and the pressing arms 809 and the connecting plate 808 cooperate to limit the displacement of the sampling harness 602, so that the strength and stability of the connection of the connecting portion 801 and the sampling harness 602 are improved.

With continued reference to fig. 7, fig. 7 is an exploded view of the sampling assembly 6 according to an embodiment of the present utility model.

In some embodiments of the present utility model, sampling assembly 6 also includes a temperature sensor 603. The temperature sensor 603 is provided on the sampling circuit board 601 and is electrically connected to the sampling circuit board 601. Illustratively, a temperature sensor 603 is disposed toward the housing 40 of the battery cell 7 for acquiring temperature information of the battery cell 7.

The temperature sensor 603 may be a thermistor whose resistance value changes with a change in temperature, for example. The change in the temperature around the thermistor can be obtained by measuring the change in the resistance of the thermistor. The thermistor can be arranged as close to the battery cell 7 as possible, and the accuracy and the measurement efficiency of acquiring temperature change are improved.

In the above technical scheme, the temperature sensor 603 is arranged on the sampling circuit board 601, and the sampling circuit board 601 has certain structural strength, so that the temperature sensor 603 can be supported, and external stress is reduced and transmitted to the temperature sensor 603 under the conditions of deformation, impact or vibration of the battery cell 7, and the like, so that the stability of the temperature sensor 603 is improved. In addition, the temperature sensor 603 is provided in the case 40 of the battery cell 7, and the accuracy and efficiency of the temperature sensor 603 for acquiring the temperature change of the battery cell 7 can be improved.

As shown in fig. 7 and 8, in some embodiments of the present utility model, the sampling circuit board 601 further includes a first surface 604 and a second surface 605 disposed opposite to each other, the first surface 604 being configured to be disposed toward the housing 40 of the battery cell 7. The plugging portion 802 passes through the connection hole 606 from the second surface 605 of the sampling circuit board 601 and is clamped with the sampling circuit board 601.

According to the technical scheme, the sampling wire harness 602 is arranged on one side, away from the battery cell 7, of the sampling circuit board 601, so that the distance between the sampling circuit board 601 and the battery cell 7 shell 40 can be reduced, and the efficiency and the accuracy of acquiring the temperature information of the battery cell 7 by the temperature sensor 603 are improved.

As shown in fig. 9, in some embodiments of the present utility model, the length of the connection hole 606 along the first direction X is L1, and the maximum dimension of the plug portion 802 along the first direction X is L2, where L2 > L1. In the above structure, the interference fit between the plugging portion 802 and the connection hole 606 improves the connection strength and connection stability between the sampling connector 8 and the sampling circuit board 601. Illustratively, the first direction X may be a direction of the width of the sampling circuit board 601, or the first direction X may be a length direction of the sampling circuit board 601.

In some alternative embodiments, each sampling circuit board 601 is connected to two sampling assemblies 6 at the same time, two connecting holes 606 are formed in the sampling circuit board 601 at intervals, and the two connecting holes 606 are connected to the two sampling assemblies 6 respectively. Wherein two sampling assemblies 6 are arranged along a first direction X.

As shown in fig. 10, in some embodiments of the present utility model, the sampling assembly 6 further includes a limiting frame 607 provided on the first surface 604 of the sampling circuit board 601, and the limiting frame 607 is provided with a receiving cavity for receiving the temperature sensor 603.

The limiting frame 607 includes two first limiting plates disposed opposite to each other along a first direction X, and two second limiting plates disposed opposite to each other along a second direction, where the second direction intersects with the first direction X, and the first limiting plates and the second limiting plates are first connected and enclose to form a receiving cavity for receiving the temperature sensor 603.

The limiting frame 607 is provided, and when the battery cell 7 is deformed or subjected to external force, the movement of the temperature sensor 603 relative to the battery cell 7 is within the range limited by the limiting frame 607, so that the probability of failure of the temperature sensor 603 is reduced.

In some embodiments of the present utility model, sampling assembly 6 further includes a weld 608 disposed between temperature sensor 603 and first surface 604. By providing the soldering portion 608, the strength and stability of the connection between the temperature sensor 603 and the sampling circuit board 601 are improved.

As shown in fig. 11, in some embodiments of the utility model, the sampling assembly 6 further comprises an insulating member 609 provided in the receiving chamber, the insulating member 609 comprising a first insulating portion 610 provided between the temperature sensor 603 and the housing 40 of the battery cell 7. Insulation between the battery cell 7 and the temperature sensor 603 is achieved by providing the first insulation portion 610, and leakage of the battery cell 7 is prevented.

Alternatively, the insulating member 609 may be a heat conductive adhesive, which has good adhesion and insulation, and good heat conductivity. The use of the heat conductive adhesive for the insulating member 609 can reduce the loss of heat transfer and improve the sensitivity and accuracy of the temperature sensor 603 to sense the temperature change of the battery cell 7.

In some embodiments of the present utility model, the insulating member 609 further includes a second insulating portion 611, and the second insulating portion 611 is disposed between the limit frame 607 and the temperature sensor 603. The second insulating portion 611 is provided to improve the insulating performance between the stopper frame 607 and the temperature sensor 603. In addition, the second insulation part 611 performs the space between the limit frame 607 and the temperature sensor 603, so that the contact between external impurities or moisture and the temperature sensor 603 is reduced, the measurement accuracy of the temperature sensor 603 is improved, and the service life of the temperature sensor 603 is prolonged.

Embodiments of the present utility model also provide a battery 2 that includes a battery cell 7, a sampling harness 602, and the sampling assembly 6 of the above embodiments. The battery cell 7 includes a housing 40. The sampling assembly 6 is provided to the housing 40 to acquire temperature information of the battery cell 7. The sampling harness 602 is connected to the connection portion 801 of the sampling assembly 6, and the sampling harness 602 is used to transmit temperature information to the battery management system of the battery 2.

The embodiment of the utility model also provides an electric device, which comprises the battery 2 in the embodiment, wherein the battery 2 is used for providing electric energy.

The battery 2 and the power consumption device according to the embodiment of the present utility model each include the sampling assembly 6 in the above-described embodiment. Firstly, the sampling assembly 6 in the embodiment of the utility model includes the sampling connecting piece 8, the plugging portion 802 of the sampling connecting piece 8 is bent relative to the connecting portion 801, so that a certain angle is formed between the plugging portion 802 and the connecting portion 801, a non-rigid connection is formed between the sampling wire harness 602 and the sampling circuit board 601, the sampling wire harness 602 can have a certain range of relative displacement relative to the sampling circuit board 601, and under the condition that the battery unit 7 is deformed or moves in a small range, the stability of signal transmission between the sampling wire harness 602 and the sampling circuit board 601 is improved, and the reliability of the sampling process is improved. Second, in the sampling assembly 6, the temperature sensor 603 is disposed on the sampling circuit board 601, and the sampling circuit board 601 has a certain structural strength, so that the temperature sensor 603 can be supported, and stress is reduced and transferred to the temperature sensor 603 under the conditions that the battery 2 is deformed or impacted, so that the stability of the temperature sensor 603 is improved. Third, the temperature sensor 603 is provided in the case 40 of the battery cell 7, which can improve the accuracy and efficiency of the temperature sensor 603 to obtain the temperature change of the battery cell 7.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (15)

1. A sampling assembly (6), characterized by comprising a sampling circuit board (601) and a sampling connector (8), the sampling connector (8) comprising:

a connection section (801) for connection to a sampling harness (602);

the plug-in part (802) is electrically connected with the sampling circuit board (601), and at least part of the plug-in part (802) is inserted into the sampling circuit board (601) and is clamped with the sampling circuit board (601);

wherein the insertion portion (802) is bent with respect to the connection portion (801) so that an angle is formed between the insertion portion (802) and the connection portion (801).

2. The sampling assembly (6) according to claim 1, wherein the sampling circuit board (601) is provided with a connection hole (606), the plug-in portion (802) comprising:

a support plate (803) connected to the connection portion (801);

and the plug board (804) is connected with one end of the supporting plate (803) far away from the connecting part (801), and the plug board (804) is in interference fit with the connecting hole (606).

3. The sampling assembly (6) according to claim 2, wherein the plug board (804) is provided with a through relief hole (805).

4. The sampling assembly (6) according to claim 2, wherein the end of the plug board (804) remote from the support plate (803) is arc-shaped.

5. The sampling assembly (6) of claim 4, wherein the plug board (804) comprises:

a first arc segment (806) connected to the support plate (803);

a second arcuate segment (807) connected to the first arcuate segment (806);

wherein, a clamping groove (810) is formed between the second arc-shaped section (807) and the first arc-shaped section (806), and the clamping groove (810) is clamped with the sampling circuit board (601).

6. The sampling assembly (6) according to claim 2, wherein the connection (801) comprises:

a connection plate (808) connected to the plug-in connection (802);

and the pressing arms (809) are arranged on two opposite sides of the connecting plate (808), and the pressing arms (809) are used for pressing the sampling wire harness (602).

7. The sampling assembly (6) according to any one of claims 2-6, wherein the sampling assembly (6) further comprises a temperature sensor (603), the temperature sensor (603) being provided to the sampling circuit board (601) and being electrically connected to the sampling circuit board (601).

8. The sampling assembly (6) according to claim 7, wherein the plug-in portion (802) passes through the connection hole (606) and is snapped with the sampling circuit board (601).

9. The sampling assembly (6) according to claim 7, wherein the connection hole (606) has a length L1 in a first direction (X), and the socket (802) has a maximum dimension L2 in the first direction (X), wherein L2 > L1.

10. The sampling assembly (6) according to claim 9, wherein the sampling assembly (6) further comprises a limiting frame (607) provided to the sampling circuit board (601), the limiting frame (607) being provided with a receiving cavity for receiving the temperature sensor (603).

11. The sampling assembly (6) according to claim 10, wherein the sampling assembly (6) further comprises a weld (608) provided between the temperature sensor (603) and the sampling circuit board (601), the weld (608) being for connecting the temperature sensor (603) and the sampling circuit board (601).

12. The sampling assembly (6) according to claim 11, wherein the sampling assembly (6) further comprises an insulation (609) provided in the receiving cavity, the insulation (609) comprising a first insulation (610) provided between the temperature sensor (603) and the sampling circuit board (601).

13. The sampling assembly (6) according to claim 12, wherein the insulation (609) further comprises a second insulation (611), the second insulation (611) being provided between the limit frame (607) and the temperature sensor (603).

14. A battery (2), characterized by comprising:

a battery cell (7) comprising a housing (40);

the sampling assembly (6) according to any one of claims 1-13, the sampling assembly (6) being provided to the housing (40) to obtain temperature information of the battery cells (7);

and the sampling wire harness (602) is connected to the connecting part (801) of the sampling assembly (6), and the sampling wire harness (602) is used for transmitting the temperature information to a battery management system.

15. An electrical device, characterized by comprising a battery (2) as claimed in claim 14, the battery (2) being adapted to provide electrical energy.