CN220895605U - Temperature sampling structure, battery sampling assembly, battery and power utilization device - Google Patents

Abstract

The embodiment of the utility model provides a temperature sampling structure, a battery sampling assembly, a battery and an electric device, wherein the temperature sampling structure comprises a temperature sensor and an adapter, and the temperature sensor is used for acquiring temperature information; the adaptor comprises a mounting part and at least two welding parts, wherein the welding parts are arranged on one side of the mounting part along the first direction and are electrically connected with the mounting part, separation grooves penetrating through the adaptor are formed between the welding parts in a separation mode, the temperature sensor is electrically connected with the mounting part, and the welding parts are used for being welded with the sampling circuit board so that the temperature sensor and the sampling circuit board are electrically connected. According to the temperature sampling structure provided by the embodiment of the utility model, the separation grooves are beneficial to increasing the distance between the welding parts, so that the probability of short circuit between the two welding parts caused by the fact that one welding part flows to the other welding part due to the molten welding material in the welding operation process is reduced, the contact stability between the welding parts and the sampling circuit board is improved, and the stability of electric connection between the two welding parts is improved.

Description

Temperature sampling structure, battery sampling assembly, battery and power utilization device

Technical Field

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

Background

In recent years, the new energy industry has been vigorously developed. As an indispensable part of the new energy industry, the safety of batteries is receiving increasing attention.

The temperature is an important control parameter of the battery in the working process, and directly influences the safety of the battery, the charging and discharging strategies of the battery and the like, so that temperature sampling is extremely important for the working and safety of the battery.

In the related art, a temperature sensor represented by a thermistor (Negative Temperature Coefficient thermistor, NTC) is generally used together with a conductive connection structure to form a temperature sampling structure. In the process of temperature change of Battery single cells in the Battery, the temperature sensor transmits an electric signal changing along with the temperature to a sampling circuit board of a CCS (Cells Contact System, integrated busbar) component in the Battery through a conductive connection structure, and the CCS component transmits the electric signal to a Battery management system (Battery MANAGEMENT SYSTEM, BMS), so that a reference is provided for a control strategy of the Battery management system.

The conductive connection structure is electrically connected with the CCS component in a welding mode, and the conductive connection structure is small in size, so that the positive electrode and the negative electrode of the conductive connection structure are short-circuited easily in the welding operation process, and the short circuit is caused, so that the temperature sampling structure cannot realize normal sampling operation.

Disclosure of utility model

In view of the foregoing, it is desirable to provide a temperature sampling structure, a battery sampling assembly, a battery and an electric device that can facilitate welding operation.

In order to achieve the above object, the technical solution of the embodiment of the present utility model is as follows:

An embodiment of the present utility model provides a temperature sampling structure for transmitting temperature information of a measurement position to a sampling circuit board, the temperature sampling structure including:

The temperature sensor is used for acquiring the temperature information;

The switching piece, the switching piece includes installation department and two at least welding portions, welding portion locates one side of installation department along the first direction and with the installation department electricity is connected, each separate between the welding portion and form and run through the separating groove of switching piece, temperature sensor with the installation department electricity is connected, welding portion be used for with sampling circuit board welding so that both electricity are connected, welding portion including be used for with sampling circuit board welded welding area, adjacent two welding portion the welding area is followed first direction staggers.

The embodiment of the utility model provides a temperature sampling structure, which is beneficial to increasing the space between each welding part on one hand through a welding part and a separation groove between the welding parts which are arranged separately, so that the probability of short circuit between the two welding parts caused by the fact that one welding part flows to the other welding part due to the molten welding material in the welding operation process is reduced; on the other hand, through setting up the separating groove for the molten state's that flows from on the welding part welding material enters into the separating groove, when reducing unnecessary molten state's welding material and another welding part and taking place to be connected, be favorable to increasing the area of contact between the required welded fastening of welding material and welding part, be favorable to improving the stability of contact between welding part and the sampling circuit board, improve the stability of electric connection between the two, thereby be favorable to increasing the distance between two welding areas, further reduced the welding material of molten state and thereby the probability that one welding area flows to the welding area of another welding part adjacent to it, further reduced the possibility that takes place the short circuit between the different welding parts.

In some embodiments, the welding portion includes a connection section and a welding section, the connection section extends along the first direction, the welding section is located at an end of the connection section away from the mounting portion along the first direction, the welding section forms the welding area, and the dimensions of the connection sections of two adjacent welding portions along the first direction are different.

Therefore, the size of the connecting section between the different welding parts is adjusted, so that the distances between the welding sections and the mounting parts along the first direction are different, and the purpose that the welding sections of the two welding parts are staggered along the first direction is achieved.

In some embodiments, the separation groove extends along the first direction, and a dimension of the separation groove perpendicular to the first direction ranges from 3mm to 10mm.

Therefore, the separation groove has a proper size to reduce the probability that the welding material in a molten state flows through the separation groove, and meanwhile, the overlarge interval between two adjacent welding parts is avoided, so that the welding efficiency is improved.

In some embodiments, the weld is provided with a through hole through the adapter.

So, through setting up the through-hole, increased the area of contact between welding material and the welding portion, be favorable to improving the joint strength between welding material and the welding portion between them, simultaneously, the inner wall of through-hole cooperates with the backstop of welding material, has reduced the probability that the connection takes place not hard up between the two, has improved connection stability between the two, and then is favorable to improving the connection stability between sampling circuit board and the welding portion.

In some embodiments, the number of the through holes is a plurality, and each through hole is staggered along the first direction.

Thus, on the one hand, it is advantageous to arrange more through holes on the welded part in the case of a certain size of the welded part, and on the other hand, it is avoided that the through holes are arranged side by side perpendicular to the first direction, and it is advantageous to reduce the adverse effect on the structural strength of the welded part due to the arrangement of the through holes.

In some embodiments, the adapter further includes a connection portion, the connection portion is a flexible circuit board, the connection portion is bent and extended reciprocally, the mounting portion is connected to one end of the connection portion along the first direction, and the welding portion is connected to the other end.

On one hand, the temperature sampling structure can adapt to the installation and welding positions with different intervals in the process of battery assembly operation, and the adaptability of the temperature sampling structure is improved; on the other hand, in the battery use, under the effect of external force, temperature sampling structure can reduce the probability that installation department and welding part break away from the connection through the deformation of connecting portion, has improved the safety in utilization of battery.

In some embodiments, the connecting portion includes a bending section that protrudes toward a second direction, the first direction being perpendicular to the second direction.

Therefore, the expansion deformation of the connecting part along the first direction is more facilitated, the larger expansion stroke between the mounting part and the welding part along the first direction is facilitated, and the occurrence probability of the damage condition such as tearing and the like caused by the acting force along the first direction of the temperature sampling structure is further reduced.

In some embodiments, the number of the bending sections is plural, each bending section is sequentially connected end to end along the first direction, and the protruding directions of two adjacent bending sections are opposite.

So, on the one hand, under the prerequisite of satisfying the flexible stroke requirement along the first direction between installation department and the welding portion, be favorable to reducing the size of every bending section, improve temperature sampling structure's suitability, on the other hand is favorable to making the connecting portion evenly at the produced deformation volume of flexible in-process to be favorable to making installation department and the elastic force that the welding portion received even.

In some embodiments, the adaptor is a double-sided circuit board, the temperature sensor is electrically connected with the copper-clad layer on one side of the mounting portion along the thickness direction of the adaptor, and in the projection perpendicular to the thickness direction of the adaptor, the projection of the temperature sensor is partially or completely overlapped with the projection of the copper-clad layer on the other side, and one side of the mounting portion, deviating from the temperature sensor along the thickness direction of the adaptor, is used for contacting with a measurement position.

Therefore, the length of the heat conduction path between the copper-clad layer and the temperature sensor is shortened, so that the good heat conduction performance of copper can be better utilized, the temperature sensor can feel the temperature change condition of the measuring position more quickly, and the response speed of the temperature sensor is improved.

In some embodiments, the temperature sampling structure further includes a mounting member, a mounting cavity is provided in the mounting member, one side of the mounting cavity is open, the mounting member is provided at the mounting portion, the temperature sensor is partially or completely located in the mounting cavity through the open position of the mounting cavity, and the mounting cavity is used for filling the adhesive.

Therefore, the temperature sensor can be protected to a certain extent through the mounting piece, and the probability of damage to the temperature sensor caused by collision of other objects is reduced; on the one hand, the mounting piece and the mounting part can be fixed by the adhesive; on the other hand, the adhesive can serve the purpose of protecting the temperature sensor after solidification.

The embodiment of the utility model also provides a battery sampling assembly, which comprises a sampling circuit board and the temperature sampling structure of any one or more of the previous embodiments, wherein the welding part is welded with the sampling circuit board so as to electrically connect the sampling circuit board and the temperature sampling structure.

Therefore, through the welding parts arranged at intervals, the probability of short circuit of the positive electrode and the negative electrode between the sampling circuit board and the temperature sampling structure is reduced, and the success rate of welding operation is improved.

The embodiment of the utility model also provides a battery, which comprises a battery management system and the battery sampling assembly in the previous embodiment, wherein the sampling circuit board is electrically connected with the battery management system, and the mounting part is used for contacting with a measuring position in the battery.

Thus, the purpose of transmitting the temperature information acquired by the temperature sampling structure to the battery management system is achieved; through the welding part that the interval set up, reduced the probability that takes place the short circuit in the welding process, reduced the probability that has battery sampling subassembly to take place the short circuit and lead to the unable normal work of battery.

The embodiment of the utility model also provides an electric device, which comprises the battery in the previous embodiment, wherein the battery is used as a power supply of the electric device.

Therefore, through the welding parts arranged at intervals, the probability of short circuit occurrence in the daily use process of the electric device is reduced, and the use safety of the electric device is improved.

Drawings

FIG. 1 is a schematic diagram of an electric device as a vehicle according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of a battery in an embodiment of the utility model;

FIG. 3 is a schematic diagram of a temperature sampling structure according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of the embodiment of FIG. 3 at another perspective;

FIG. 5 is a schematic view in section of the position A-A of FIG. 4;

FIG. 6 is a schematic diagram of a temperature sampling structure according to another embodiment of the present utility model at a first viewing angle;

FIG. 7 is a schematic diagram of the embodiment of FIG. 6 at a second viewing angle;

FIG. 8 is a schematic diagram of the embodiment of FIG. 6 at a third view angle;

FIG. 9 is an exploded view of the embodiment of FIG. 6;

Fig. 10 is a schematic diagram of a temperature sampling structure, a sampling circuit board, a battery management system, and a bus assembly according to an embodiment of the present utility model.

Description of the reference numerals

1000. A vehicle; 100. a battery; 200. a controller; 300. a motor; 10. a temperature sampling structure; 11. a temperature sensor; 12. an adapter; 12a, separation grooves; 121. a mounting part; 122. a welding part; 122a, a welding area; 122b, through holes; 1221. a connection section; 1222. a welding section; 123. a connection part; 1231. bending sections; 124. a copper-clad layer; 13. a mounting member; 13a, a mounting cavity; 14. an adhesive; 20. a case; 21. a bottom cover; 22. a top cover; 30. a battery cell; 40. a sampling circuit board; 50. a battery sampling assembly; 60. a confluence member; 70. a battery management system.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present utility model and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present utility model and should not be construed as unduly limiting 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 in the description of the drawings above are intended to cover non-exclusive inclusions.

In the description of embodiments of the present utility model, the technical terms "first," "second," "third," etc. are used merely to distinguish between different objects and should not 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 this context, the character "/" generally indicates that the associated object is an "or" relationship.

In the description of the embodiment of the present utility model, for convenience of explanation, as shown in fig. 3, 5, 9 and 10, the direction of the arrow X is the "first direction", the direction of the arrow Y is the "second direction", and the direction of the arrow Z is the "thickness direction of the adapter".

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.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the term "contact" is to be understood in a broad sense as either direct contact or contact across an intermediate layer, as either contact with substantially no interaction force between the two in contact or contact with interaction force between the two in contact.

Currently, batteries are increasingly used in life and industry. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and various fields such as aerospace and the like. With the continuous expansion of the battery application field, the market demand thereof is also continuously expanding.

Fig. 2 is an exploded perspective view of a battery 100 according to an embodiment of the present utility model. As shown in fig. 2, the battery 100 includes a case 20 and at least one battery cell 30,

The case 20 includes a top cover 22 and a bottom cover 21, the top cover 22 covering the bottom cover 21, thereby enclosing an installation space for placing the battery cells 30 between the bottom cover 21 and the top cover 22.

In the battery 100, the plurality of battery cells 30 may be connected in series, parallel or a series-parallel connection between the plurality of battery cells 30, and the series-parallel connection refers to that the plurality of battery cells 30 are connected in series or parallel. The plurality of battery cells 30 can be directly connected in series or in parallel or in series-parallel, and then the whole body formed by the plurality of battery cells 30 is placed in the accommodating space formed by the bottom cover 21 and the top cover 22; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 30 in series or parallel or series-parallel connection, and a plurality of battery modules are connected in series or parallel or series-parallel connection to form a whole and are accommodated in the accommodating space formed by the bottom cover 21 and the top cover 22. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 30.

The battery cell 30 according to the embodiment of the present utility model includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell 30 operates primarily by virtue of metal ions moving between the positive and negative electrode sheets. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes out of the current collector coated with the positive electrode active material layer, and the current collector without the positive electrode active material layer is laminated to serve as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes out of the current collector coated with the negative electrode active material layer, and the current collector without the negative electrode active material layer is laminated to serve as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a roll-to-roll structure or a laminate structure.

The battery cell 30 may be a secondary battery, and the secondary battery refers to the battery cell 30 that can be continuously used by activating the active material in a charging manner after the battery cell 30 is discharged.

The battery cell 30 may be a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited by the embodiment of the utility model.

The battery cell 30 may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shapes, and the prismatic battery cell includes a square case battery cell, a blade battery cell, a polygonal battery cell, such as a hexagonal battery cell, etc., and embodiments of the present utility model are not particularly limited.

The battery 100 according to the embodiment of the present utility model refers to a single physical module including one or more battery cells 30 to provide higher voltage and capacity.

The electric device in the embodiment of the utility model is powered by the battery, and 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.

In the following embodiments, for convenience of explanation, the electric device according to an embodiment of the present utility model will be described by taking the vehicle 1000 as an example. The following description refers to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a vehicle 1000 according to an embodiment of the utility model. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. As shown in fig. 1, the battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the utility model, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

The following describes embodiments of the present utility model in detail.

In the related art, a temperature sampling structure is arranged in a battery, the temperature sampling structure is used for acquiring temperature information of components such as a battery monomer in the battery and transmitting the temperature information to a sampling circuit board in the battery, the sampling circuit board gathers operation information of various components in the battery such as the acquired temperature information and transmits the operation information to a battery management system, and the battery management system analyzes and processes the operation information so as to control various components in the battery to execute corresponding operation strategies to maintain normal and safe operation of the battery.

The temperature sampling structure is connected and electrically conducted with the sampling circuit board in a welding mode, so that the temperature sampling structure is fixedly connected with the sampling circuit board and is convenient to transmit temperature information to the sampling circuit board.

The temperature sampling structure is characterized in that the temperature sampling structure comprises a positive electrode welding area and a negative electrode welding area, and in the process of welding the temperature sampling structure and a sampling circuit board, the temperature sampling structure and the sampling circuit board are in a liquid state under a molten state and can flow, so that the probability that the positive electrode welding area and the negative electrode welding area are connected together by the welding material due to the flowing of the molten welding material exists, the risk that the positive electrode welding area and the negative electrode welding area are short-circuited exists, and welding operation failure and potential safety hazards exist.

Based on the technical problems, the embodiment of the utility model provides a temperature sampling structure, which separates different welding areas by arranging the separation grooves, so that the probability of connecting different welding areas due to molten welding materials in the welding process is reduced, and the success rate of welding operation is improved.

Referring specifically to fig. 3 and 4, an embodiment of the present utility model provides a temperature sampling structure 10, where the temperature sampling structure 10 is used to transmit measurement location temperature information to a sampling circuit board 40, and specifically includes a temperature sensor 11 and an adapter 12.

The measurement location, i.e., the component or area within the battery 100 where a temperature change is desired.

The temperature sensor 11 is used for acquiring temperature information, and is a sensor capable of sensing temperature change and converting a physical signal of the temperature change into an electrical signal which can be output.

The specific type of the temperature sensor 11 is not limited, for example, a thermocouple sensor, a thermistor sensor, and the like.

The temperature sensor 11 can directly contact with the measuring position, and directly acquire temperature change information of the measuring position in a heat conduction mode; the temperature change information of the measuring position can be indirectly acquired through other objects in contact with the measuring position without directly contacting the measuring position.

It should be noted that, specific principles, related structural forms, etc. of implementing sensing temperature by different types of temperature sensors 11 are disclosed in the related art, and are not described herein.

The adaptor 12 includes a mounting portion 121 and at least two welding portions 122, the welding portions 122 are disposed on one side of the mounting portion 121 along the first direction and electrically connected to the mounting portion 121, a separation groove 12a penetrating the adaptor 12 is formed between the welding portions 122, the temperature sensor 11 is electrically connected to the mounting portion 121, and the welding portions 122 are used for welding with the sampling circuit board 40 to electrically connect the two.

The mounting portion 121 is connected to the temperature sensor 11 so that temperature information acquired by the temperature sensor 11 can be transmitted to the adapter 12.

The mounting portion 121 is electrically connected to the welding portion 122 so that the mounting portion 121 can transmit temperature information to the welding portion 122.

It is understood that the electrical connection between the mounting portion 121 and the soldering portion 122 may be a direct connection between the two to achieve electrical conduction, or may be a transfer between other portions to achieve electrical conduction.

And a soldering portion 122 for soldering with the sampling portion, thereby electrically connecting the adapter 12 with the sampling circuit board 40.

Of the at least two welds 122, at least one weld 122 can form a positive electrode of the adapter 12 and at least one weld 122 can form a negative electrode of the adapter 12.

The separation groove 12a is used to form a space between the welding parts 122, so that during welding, excessive welding material in a molten state can flow into the separation groove 12a, and the probability that the welding material in a molten state flows onto adjacent other welding parts 122 is reduced.

It will be appreciated that the solder 122 is located on the sampling circuit board 40 and that molten solder material is able to pass through the adapter 12 to contact the sampling circuit board 40 after entering the separation slot 12 a.

The embodiment of the utility model provides a temperature sampling structure 10, which is beneficial to increasing the interval between welding parts 122 on one hand through a welding part 122 which is arranged separately and a separation groove 12a between the welding parts 122, so as to reduce the probability of short circuit between two welding parts 122 caused by the flow of welding materials in a molten state to the other welding part 122 during the welding operation; on the other hand, by providing the partition groove 12a, the molten solder flowing out from one solder 122 enters the partition groove 12a, and the contact area between the solder and the area where the solder 122 is required to be soldered is increased while the connection between the excess molten solder and the other solder 122 is reduced, so that the contact stability between the solder 122 and the sampling circuit board 40 is improved, and the stability of the electrical connection between the two is improved.

The specific number of the partition grooves 12a is not limited, and may be one or a plurality.

It is understood that the soldering portion 122 may be partially or entirely used for soldering with the sampling circuit board 40, that is, the soldering portion 122 has a soldering region 122a for carrying the soldering material in a molten state and connecting the soldering material with the sampling circuit board 40. The welding region 122a may be partially formed in the welding portion 122, or the welding portion 122 may be entirely the welding region 122a.

In some embodiments, referring to fig. 3 and 4, a portion of the solder 122 forms a solder area 122a for soldering with the sampling circuit board 40, and the solder areas 122a of adjacent two solder 122 are staggered in the first direction.

The two welding areas 122a are offset in the first direction, which means that the two welding areas 122a are different in distance from the mounting portion 121 in the first direction.

In this way, the distance between the two welding regions 122a is advantageously increased, further reducing the chance of welding material in a molten state and thus one welding region 122a flowing to the welding region 122a of another welding portion 122 adjacent thereto, further reducing the likelihood of shorting between the different welding portions 122.

It is understood that the size of the weld area 122a on different welds 122 may be the same or different.

The specific manner of achieving the misalignment in the first direction between the welding areas 122a of the adjacent two welding portions 122 is not limited. The size of the adjacent two welding parts 122 in the first direction and the distance from the mounting part 121 may be the same, but the welding areas 122a of the two are each different in position in the first direction; the adjacent two welding portions 122 may have the same distance from the mounting portion 121 in the first direction but different sizes so that the welding regions 122a of the two are each different in position in the first direction.

Illustratively, referring to fig. 4, the welding portion 122 includes a connection section 1221 and a welding section 1222, the connection section 1221 extending in a first direction, the welding section 1222 being located at an end of the connection section 1221 remote from the mounting portion 121 in the first direction, the welding section 1222 forming a welding area 122a, the connection sections 1221 of adjacent two welding portions 122 being different in size in the first direction.

The solder segments 1222 and the connection segments 1221 are electrically connected.

As such, by adjusting the size of the connecting section 1221 between the different welding parts 122, it is advantageous to make the distances between the respective welding sections 1222 and the mounting part 121 different in the first direction, and it is advantageous to achieve the purpose of staggering the welding sections 1222 of the two welding parts 122 in the first direction.

In some embodiments, the projection ranges of the welding segments 1222 of two adjacent welding portions 122 are separated from each other on a projection plane parallel to the first direction, that is, the projection of one of the projections of two welding segments 1222 is located outside the projection range of the other.

In this way, the purpose of staggering the welding segments 1222 of the two welding portions 122 in the first direction is achieved.

In some embodiments, referring to fig. 4, the extending direction of the separation groove 12a and the welding portion 122 are the same, which is beneficial to make the interval between two adjacent welding portions 122 uniform, and reduces the probability that the molten welding material will overflow the separation groove 12a to reach the other welding portion 122.

In some embodiments, referring to FIG. 4, the separation groove 12a extends in the first direction, and the separation groove 12a has a dimension perpendicular to the first direction in the range of 3mm to 10mm, i.e., 3mm L10 mm.

In this way, the separation groove 12a has a suitable size to reduce the probability of the welding material in a molten state to overflow the separation groove 12a, and at the same time, to avoid an excessively large interval between the adjacent two welding portions 122, which is advantageous for improving the welding efficiency.

The specific dimension of the partition groove 12a perpendicular to the first direction is not limited, for example, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.

The specific method for determining the dimension of the separation groove 12a perpendicular to the first direction is not limited, for example, in an environment where the room temperature is 25 ℃, a digital vernier caliper is used to clamp inner walls of two sides of the separation groove 12a perpendicular to the first direction, and a numerical value on a display screen of the digital vernier caliper is read to obtain the dimension of the separation groove 12a perpendicular to the first direction.

It will be appreciated that the strength of the connection between the solder material and the solder 122 after solidification of the solder material is related to the stability of the electrical connection between the two.

In some embodiments, referring to fig. 4, the solder 122 is provided with a through hole 122b extending through the adapter 12.

During the soldering operation, the soldering material in a molten state can pass through the through-hole 122b to be in contact with the sampling circuit board 40, and after the soldering material in the through-hole 122b is solidified, the soldering material is in a state of being in stop fit with the inner wall of the through-hole 122 b.

Thus, through setting up the through-hole 122b, increased the area of contact between welding material and the welding part 122, be favorable to improving the joint strength between welding material and the welding part 122 between them, simultaneously, the inner wall of through-hole 122b cooperates with the backstop of welding material, has reduced the probability that the connection takes place not hard up between the two, has improved connection stability between the two, and then is favorable to improving the connection stability between sampling circuit board 40 and the welding part 122.

It is understood that the through hole 122b is located in the welding region 122a of the welding portion 122.

In embodiments where the solder segments 1222 are provided, referring to fig. 4, the vias 122b are located in the solder segments 1222.

The specific shape of the through hole 122b is not limited, and for example, referring to fig. 4, the through hole 122b is circular to reduce the risk of tearing of the inner wall of the through hole 122b due to stress concentration during welding and assembly.

The specific number of the through holes 122b in one solder 122 is not limited, and may be one or a plurality.

The size of the plurality of through holes 122b may be the same or different.

In an embodiment in which the number of through holes 122b on one solder 122 is plural, referring to fig. 4, the through holes 122b are staggered in the first direction.

That is, the geometric center of each through hole 122b is different in the position of the welded portion 122 in the first direction.

In this way, on the one hand, it is advantageous to arrange more through holes 122b on the welded portion 122 in the case where the welded portion 122 is sized, and on the other hand, it is advantageous to avoid arranging the through holes 122b side by side perpendicular to the first direction, and to reduce the adverse effect on the structural strength of the welded portion 122 due to the arrangement of the through holes 122 b.

In an embodiment in which the number of through holes 122b on one solder 122 is plural, referring to fig. 4, two through holes 122b adjacent in the first direction are staggered perpendicular to the first direction. In this way, after the welding operation is completed, the welding portion 122 is uniformly stressed in the direction perpendicular to the first direction, which is beneficial to improving the welding stability of the welding portion 122.

It will be appreciated that during the soldering operation, there is a certain deviation of the actual mounting position between the soldering portion 122 and the sampling circuit board 40 from the design position due to the manufacturing and assembly; meanwhile, during the use of the battery 100, the adaptor 12 is beneficial to connecting different components due to the expansion of the battery cells 30 and other factors, and there is a possibility that the relative position between the mounting portion 121 and the welding portion 122 changes.

In some embodiments, referring to fig. 3 and 4, the adaptor 12 further includes a connection portion 123, the connection portion 123 is a flexible circuit board, the connection portion 123 extends in a reciprocating bending manner, the mounting portion 121 is connected to one end of the connection portion 123 along the first direction, and the welding portion 122 is connected to the other end. That is, the mounting portion 121 and the soldering portion 122 are electrically connected by the connection portion 123.

The flexible circuit board (Flexible Printed Circuit board, FPC) is a printed circuit board made of a flexible insulating substrate such as polyimide or mylar. Under the action of external force, the flexible circuit board can be freely bent, rolled and folded.

By utilizing the characteristics that the flexible circuit board can be deformed such as bent and stretched, and the connecting part 123 can be bent and extended back and forth, the electric connection can be kept under the condition that the relative position between the mounting part 121 and the welding part 122 is changed, on one hand, the temperature sampling structure 10 can adapt to the mounting and welding positions with different intervals in the process of assembling the battery 100, and the suitability of the temperature sampling structure 10 is improved; on the other hand, in the use process of the battery 100, the temperature sampling structure 10 is subjected to the external force, so that the probability of disconnection between the mounting part 121 and the welding part 122 can be reduced through the deformation of the connecting part 123, and the use safety of the battery 100 is improved.

The specific form of the connecting portion 123 reciprocally curved and extended is not limited.

For example, referring to fig. 4, the connecting portion 123 includes a bending section 1231, and the bending section 1231 protrudes toward the second direction, and the first direction is perpendicular to the second direction.

In this way, the connection portion 123 is more beneficial to the expansion and contraction deformation along the first direction, so that a larger expansion and contraction stroke along the first direction between the mounting portion 121 and the welding portion 122 is facilitated, and the occurrence probability of damage such as tearing caused by the acting force along the first direction of the temperature sampling structure 10 is further reduced.

It is understood that the first direction is a preset mounting direction of the temperature sampling structure 10, for example, the first direction is a relative direction between the area to be measured of the temperature sensor 11 and the preset soldering area 122a on the sampling circuit board 40.

The specific shape of the bending segment 1231 is not limited, for example, referring to fig. 3 and 4, a part or all of the bending segment 1231 is arc-shaped, so as to reduce the probability of breaking the bending segment 1231 due to stress concentration during the stretching process, and improve the service life of the temperature sampling structure 10.

The specific number of the bending sections 1231 is not limited, and may be one or more.

In some embodiments with multiple bending segments 1231, referring to fig. 3 and 4, each bending segment 1231 is connected end to end in the first direction, and the protruding directions of two adjacent bending segments 1231 are opposite.

Thus, on the one hand, on the premise of meeting the requirement of the telescopic travel between the mounting portion 121 and the welding portion 122 along the first direction, the size of each bending section 1231 is reduced, the fitting property of the temperature sampling structure 10 is improved, and on the other hand, the deformation amount generated by the connecting portion 123 in the telescopic process is uniform, so that the elastic acting force borne by the mounting portion 121 and the welding portion 122 is uniform.

In some embodiments, the adaptor 12 is a flexible circuit board, that is, the mounting portion 121 and the soldering portion 122 are also part of the flexible circuit board, which is beneficial to simplifying the manufacturing process of the adaptor 12, improving the production and manufacturing efficiency and reducing the manufacturing cost.

In some embodiments, the adapter 12 is a circuit board, and the mounting portion 121 is provided with the temperature sensor 11 on one surface in the thickness direction thereof and the other surface is used for contacting with the measurement position.

In this way, the temperature sensor 11 is damaged by the acting force of the adapter 12 and the measuring position, and the temperature sensor 11 is also convenient to test, overhaul and the like.

In some embodiments, referring to fig. 5, the adaptor 12 is a double-sided circuit board, the temperature sensor 11 is electrically connected to the copper-clad layer 124 on one side of the mounting portion 121 along the thickness direction of the adaptor 12, and in the projection perpendicular to the thickness direction of the adaptor 12, the projection of the temperature sensor 11 partially or completely coincides with the projection of the copper-clad layer 124 on the other side, and one side of the mounting portion 121 facing away from the temperature sensor 11 along the thickness direction of the adaptor 12 is used for contacting with a measurement position.

The double-sided circuit board is a current board in which copper-clad layers 124 are provided on both side surfaces in the thickness direction of a substrate of the circuit board.

The copper-clad layer 124, i.e., copper foil on the circuit board, is used to form an electrically conductive via.

The temperature sensor 11 is electrically connected to one of the copper-clad layers 124 to transmit a temperature signal to the adapter 12. The other copper-clad layer 124 is in direct contact with the measurement position, and meanwhile, the projection of the copper-clad layer 124 is partially or completely overlapped with the projection of the temperature sensor 11, so that the length of the heat conduction path between the copper-clad layer 124 and the temperature sensor 11 is advantageously shortened, good heat conduction performance of copper can be better utilized, the temperature sensor 11 can feel the change condition of the temperature of the measurement position more quickly, and the response speed of the temperature sensor 11 is improved.

In some embodiments, the adapter 12 is a double sided flexible circuit board. Removing the film on the surface of the copper-clad layer 124 on one side of the mounting portion 121 to expose the copper-clad layer 124, and disposing the temperature sensor 11 on the exposed copper-clad layer 124; the film is removed from a portion of the area of the bond 122 so that the two copper-clad layers 124 of that portion are fully exposed and collectively function as the bond 122.

In some embodiments, referring to fig. 6 to 9, the temperature sampling structure 10 further includes a mounting member 13, a mounting cavity 13a is provided in the mounting member 13, one side of the mounting cavity 13a is open, the mounting member 13 is provided at the mounting portion 121, and the temperature sensor 11 is partially or completely located in the mounting cavity 13a through the open position of the mounting cavity 13 a.

In this way, the mounting member 13 can protect the temperature sensor 11 to a certain extent, and the probability of damage to the temperature sensor 11 due to collision with other objects is reduced.

The specific material of the mount 13 is not limited, and epoxy resin or the like is, for example.

In some embodiments, referring to fig. 9, the mounting cavity 13a extends through the mounting member 13 to facilitate maintaining the temperature sensor 11 from the opening of the mounting cavity 13a away from the mounting portion 121 without requiring additional disassembly of the mounting member 13.

In some embodiments, the temperature sensor 11 is spaced apart from the inner wall of the mounting cavity 13 a.

In some embodiments, referring to fig. 6, 7 and 9, the mounting cavity 13a is filled with an adhesive 14, so that, on the one hand, the mounting member 13 and the mounting portion 121 can be fixed by the adhesive 14; on the other hand, the adhesive 14 can serve the purpose of protecting the temperature sensor 11 after solidification.

In some embodiments, the temperature sensor 11 is completely immersed in the adhesive 14, so that the adhesive 14 can isolate the interference of impurities such as outside water and air on the temperature sensor 11 after solidification, which is beneficial to improving the measurement accuracy of the temperature sensor 11.

The temperature sampling structure 10 in one embodiment of the present utility model is as follows:

The temperature sampling structure 10 comprises a temperature sensor 11, a mounting part 13 and an adapter part 12, wherein the temperature sensor 11 is used for acquiring temperature information, the adapter part 12 is a double-layer flexible circuit board, the adapter part 12 comprises a mounting part 121, a connecting part 123 and at least two welding parts 122, the temperature sensor 11 is electrically connected with the mounting part 121, the welding parts 122 are used for being welded with the sampling circuit board 40 so as to electrically connect the two, the mounting part 121 is connected with one end of the connecting part 123 along a first direction, the welding parts 122 are connected with the other end, a separation groove 12a penetrating through the adapter part 12 is formed between the welding parts 122, the welding parts 122 and the separation groove 12a extend along the first direction, the dimension range of the separation groove 12a perpendicular to the first direction is 3mm to 10mm, the welding parts 122 comprise a connecting section 1221 and a welding section 1222, the connecting section 1221 extends along the first direction, the welding section 1222 is positioned at one end of the connecting section 1221 along the first direction away from the mounting part 121, the connecting sections 1221 of the two adjacent welding parts 122 are different in size along the first direction, so that the welding sections 1222 of the two adjacent welding parts 122 are staggered along the first direction, the welding parts 122 are provided with through holes 122b penetrating through the adapter 12, the number of the through holes 122b is a plurality, the through holes 122b are staggered along the first direction, the connecting parts 123 are bent and extended in a reciprocating manner, the connecting parts 123 comprise bending sections 1231, the number of the bending sections 1231 is a plurality, the bending sections 1231 protrude towards the second direction, the first direction is perpendicular to the second direction, the bending sections 1231 are sequentially connected end to end along the first direction, the protruding directions of the two adjacent bending sections 1231 are opposite, the temperature sensor 11 is electrically connected with the copper-clad layer 124 on one side of the mounting part 121 along the thickness direction of the adapter 12, in the projection perpendicular to the thickness direction of the adapter 12, the projection of the temperature sensor 11 is partially or completely overlapped with the projection of the copper-clad layer 124 on the other side, the mounting part 121 is used for contacting with the measuring position along one side of the thickness direction of the adapter 12, which is away from the temperature sensor 11, the mounting part 13 is provided with a mounting cavity 13a, the mounting cavity 13a penetrates through the mounting part 13, the mounting part 13 is arranged on the mounting part 121, the temperature sensor 11 is partially or completely positioned in the mounting cavity 13a through the opening of the mounting cavity 13a, and the mounting cavity 13a is used for filling the adhesive 14.

Embodiments of the present utility model also provide a battery sampling assembly 50, referring to fig. 10, the battery sampling assembly 50 includes a sampling circuit board 40 and one or more of the temperature sampling structures 10 of any of the previous embodiments, and a soldering portion 122 is soldered to the sampling circuit board 40 to electrically connect the two.

The sampling circuit board 40 is used for acquiring and collecting various devices in the battery 100 for measuring the temperature, voltage and other signals of the battery cells 30, and transmitting the information to the battery management system 70.

In this way, through the welding parts 122 arranged at intervals, the probability of short circuit between the positive electrode and the negative electrode of the sampling circuit board 40 and the temperature sampling structure 10 is reduced, and the success rate of welding operation is improved; meanwhile, the sampling circuit board 40 and the temperature sampling structure 10 are independent components respectively, so that the number and the connection positions of the temperature sampling structures 10 adapted to the sampling circuit board 40 can be conveniently adjusted according to different requirements.

Referring to fig. 10, the battery 100 includes the battery management system 70 and the battery sampling assembly 50 of the foregoing embodiment, the sampling circuit board 40 is electrically connected to the battery management system 70, and the mounting portion 121 is used for contacting with the measurement position in the battery 100.

In this manner, the purpose of transferring the temperature information acquired by the temperature sampling structure 10 to the battery management system 70 is achieved; by spacing the welds 122, the chance of shorting during welding is reduced, and the chance of battery 100 failure due to shorting of the battery sampling assembly 50 is reduced.

The battery 100 further includes a plurality of battery cells 30 and a bus member 60, and the bus member 60 is electrically connected to the poles of the respective battery cells 30 to realize serial and parallel connection between the plurality of battery cells 30.

The specific position of the measurement position in the battery 100 is not limited, and referring to fig. 10, the position to be measured may be the surface of the bus member 60 or the surface of the battery cell 30.

The embodiment of the utility model also provides an electric device, which comprises the battery 100 in the previous embodiment, wherein the battery 100 is used as a power source of the electric device.

Therefore, through the welding parts 122 arranged at intervals, the probability of short circuit in the daily use process of the electric device is reduced, and the use safety of the electric device is improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the embodiments of the present utility model, and various modifications and variations can be made to the embodiments of the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.

Claims (13)

1. A temperature sampling structure for transmitting temperature information of a measurement location to a sampling circuit board, the temperature sampling structure comprising:

The temperature sensor is used for acquiring the temperature information;

The switching piece, the switching piece includes installation department and two at least welding portions, welding portion locates one side of installation department along the first direction and with the installation department electricity is connected, each separate between the welding portion and form and run through the separating groove of switching piece, temperature sensor with the installation department electricity is connected, welding portion be used for with sampling circuit board welding so that both electricity are connected, welding portion including be used for with sampling circuit board welded welding area, adjacent two welding portion the welding area is followed first direction staggers.

2. The temperature sampling structure according to claim 1, wherein the welded portion includes a connecting section extending in the first direction and a welded section located at an end of the connecting section away from the mounting portion in the first direction, the welded section forming the welded region, the connecting sections of adjacent two of the welded portions being different in size in the first direction.

3. The temperature sampling structure of claim 1, wherein the separation groove extends along the first direction, the separation groove having a dimension perpendicular to the first direction in a range of 3mm to 10mm.

4. The temperature sampling structure according to claim 1, wherein the welded portion is provided with a through hole penetrating the adapter.

5. The temperature sampling structure according to claim 4, wherein the number of through holes is plural, and each of the through holes is staggered in the first direction.

6. The temperature sampling structure according to claim 1, wherein the adapter further comprises a connection portion, the connection portion is a flexible circuit board, the connection portion is bent and extended reciprocally, the mounting portion is connected to one end of the connection portion along the first direction, and the soldering portion is connected to the other end.

7. The temperature sampling structure of claim 6, wherein the connection portion comprises a bent section that protrudes toward a second direction, the first direction being perpendicular to the second direction.

8. The temperature sampling structure according to claim 7, wherein the number of the bending sections is plural, each bending section is sequentially connected end to end along the first direction, and the protruding directions of two adjacent bending sections are opposite.

9. The temperature sampling structure according to claim 1, wherein the adapter is a double-sided circuit board, the temperature sensor is electrically connected with the copper-clad layer on one side of the mounting portion in the thickness direction of the adapter, and in a projection perpendicular to the thickness direction of the adapter, the projection of the temperature sensor partially or entirely coincides with the projection of the copper-clad layer on the other side, and the side of the mounting portion facing away from the temperature sensor in the thickness direction of the adapter is used for contacting with a measurement position.

10. The temperature sampling structure according to claim 1, further comprising a mounting member in which a mounting chamber is provided, one side of the mounting chamber being open, the mounting member being provided at the mounting portion and the temperature sensor being partially or entirely located in the mounting chamber through the open portion of the mounting chamber, the mounting chamber being for filling with an adhesive.

11. A battery sampling assembly comprising a sampling circuit board and one or more of the temperature sampling structures of any of claims 1-10, the solder being soldered to the sampling circuit board to electrically connect the two.

12. A battery comprising a battery management system and the battery sampling assembly of claim 11, the sampling circuit board electrically connected to the battery management system, the mounting portion for contacting a measurement location in the battery.

13. An electric power consumption device, characterized in that the electric power consumption device comprises the battery as claimed in claim 12, the battery being used as a power source of the electric power consumption device.