CN213022018U

CN213022018U - Temperature detection subassembly, battery package and vehicle

Info

Publication number: CN213022018U
Application number: CN202021846486.8U
Authority: CN
Inventors: 廖正远; 郑卫鑫; 曾毅
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-04-20
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a temperature detect subassembly, battery package and vehicle belongs to vehicle technical field. The temperature detection assembly is fixed on a bracket, the bracket is fixed on the battery cell, and the temperature detection assembly comprises a protection piece, a fixing piece and a temperature sensor; the protection piece is provided with an accommodating cavity, the temperature sensor is fixed in the accommodating cavity, and the temperature sensor is used for acquiring the temperature of the battery cell; the mounting is fixed in on the support, protection piece and mounting fixed connection, and protection piece and electric core contact. Therefore, the protection piece is tightly attached to the surface of the battery core through the fixed connection of the fixing piece and the protection piece. And the fixing piece is fixedly connected with the bracket, so that the position of the fixing piece is fixed, the protecting piece cannot be changed in the assembling process or the vehicle running process, and the temperature sensor is fixed in the accommodating cavity formed in the protecting piece, so that the temperature sensor cannot fall off, and the surface of the temperature sensor cannot be damaged.

Description

Temperature detection subassembly, battery package and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle, concretely relates to temperature detecting component, battery package and vehicle.

Background

With the continuous development of new energy, products using the new energy as a power source have received wide attention. Taking a new energy vehicle as an example, the new energy vehicle takes electric energy as a power source, so the development is particularly rapid in recent years. The power of new energy vehicles mainly comes from the battery package, and the battery package includes electric core, and at the in-process of vehicle operation, through measuring the temperature of electric core, the temperature of real-time regulation and control electric core avoids appearing the electric core high temperature of somewhere, the too fast problem of energy decay.

At present, the Temperature of the battery cell is measured in real time mainly by additionally installing an NTC (Negative Temperature CoeffiCient) thermistor on the battery cell. During the assembly, NTC thermistor connects at the tip of sampling pencil, and the mounting supports through supporting with the support and presses on the sampling pencil, and then makes NTC thermistor and electric core contact.

However, in the process of implementing the present application, the inventors found that at least the following problems exist in the prior art: on one hand, the fixing piece is pressed against the sampling wire harness, so that the NTC thermistor is easy to fall off in the assembling process or the vehicle running process, and the normal detection of the battery core temperature is influenced; on the other hand, the surface of the NTC thermistor is not protected, so that the NTC thermistor is easy to damage, and the service life of the NTC thermistor is shortened.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a temperature detect subassembly, battery package and vehicle can solve NTC thermistor and easily drop and fragile problem.

In order to solve the technical problem, the utility model discloses a realize like this:

in a first aspect, an embodiment of the present invention provides a temperature detection assembly, which is fixed on a bracket, the bracket is fixed on an electrical core, and the temperature detection assembly includes a protection member, a fixing member, and a temperature sensor;

the protection piece is provided with an accommodating cavity, the temperature sensor is fixed in the accommodating cavity, and the temperature sensor is used for acquiring the temperature of the battery cell;

the fixing piece is fixed on the support, the protection piece is fixedly connected with the fixing piece, and the protection piece is in contact with the battery core.

Optionally, the fixing member is fixed to the bracket in a clamping manner.

Optionally, the fixing member includes a first connecting plate and a second connecting plate connected to each other, the protecting member is disposed on one side of the first connecting plate close to the battery cell, and the first connecting plate and the second connecting plate are respectively fixed to the bracket in a clamping manner.

Optionally, the fixing element further includes a third connecting plate, the third connecting plate is connected between the first connecting plate and the second connecting plate, the third connecting plate and the first connecting plate enclose a limiting cavity, the protecting element is disposed in the limiting cavity, and the second connecting plate and the third connecting plate extend in a direction from the protecting element to the first connecting plate and in a direction away from each other.

Optionally, the second connecting plate includes a plate body and a shoulder arranged on the plate body and deviating from the battery core, a limiting portion is arranged on one side of the shoulder deviating from the first connecting plate, the limiting portion is far away from the support relative to the plate body in the direction from the protecting member to the first connecting plate, and when one end of the limiting portion is abutted to the support, a gap exists between the limiting portion and the support.

Optionally, the protection member is adhesively fixed to one side of the fixing member close to the battery core.

Optionally, the protective member is a thermally conductive member.

Optionally, the protection member is any one of a heat-conducting silicone member, a heat-conducting silicone grease member, a heat-conducting mica member, a heat-conducting ceramic member, or a heat-conducting silicone member.

In a second aspect, an embodiment of the present invention further provides a battery pack, the battery pack includes a support, an electrical core and any one of the temperature detecting assembly of the first aspect, the support is fixed on the electrical core, and the temperature detecting assembly is fixed on the support.

In a third aspect, an embodiment of the present invention provides a vehicle, which includes the battery pack of the second aspect.

According to the temperature detection assembly provided by the embodiment of the present invention, it can be seen that, in the embodiment of the present invention, the temperature detection assembly includes a protection member, a fixing member and a temperature sensor; the protection piece is provided with an accommodating cavity, the temperature sensor is fixed in the accommodating cavity, and the temperature sensor is used for acquiring the temperature of the battery cell; the fixing piece is fixed on the support, the protection piece is fixedly connected with the fixing piece, and the protection piece is used for being in contact with the battery core. Therefore, the protection piece is tightly attached to the surface of the battery cell through the fixed connection of the fixing piece and the protection piece. And the fixing piece is fixedly connected with the bracket, so that the fixing piece is fixed in position, the protecting piece cannot be changed in position in the assembling process or the vehicle running process, and the temperature sensor is fixed in the accommodating cavity formed in the protecting piece, so that the temperature sensor cannot fall off in the assembling process or the vehicle running process, the surface of the temperature sensor cannot be damaged under the protection of the protecting piece, and the service life of the temperature sensor is further prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of a part of a structure of a battery pack according to an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

fig. 3 is a partial schematic view illustrating a temperature acquisition assembly in contact with a battery cell according to an embodiment of the present invention;

fig. 4 is a partial cross-sectional view of a temperature acquisition assembly coupled to a support provided by an embodiment of the present invention;

fig. 5 is an exploded schematic view of a temperature detecting assembly according to an embodiment of the present invention;

fig. 6 is a schematic connection diagram of a fixing member and a protecting member according to an embodiment of the present invention.

Reference numerals

1-electric core; 2-a temperature detection component; 3-a scaffold; 4-a protective cover; 21-a protective element; 22-a fixing member; 23-a temperature sensor; 24-sampling line beam; 31-a clamping part; 32-a bayonet joint; 221-a first connection plate; 222-a second connecting plate; 223 a third connecting plate; 2211-pressing plate; 2212-clamping projection; 2213-fitting projection; 2221-plate body; 2222-shoulder; 2223-a first stop surface; 2224-a second stop surface; 22221 and a stopper.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The terms "first," "second," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention may be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The embodiment of the utility model provides a provide a battery pack, figure 1 is the utility model provides a partial structure schematic diagram of battery pack, as shown in figure 1, this battery pack includes support 3, electric core 1 and temperature detect subassembly 2, on support 3 was fixed in electric core 1, temperature detect subassembly 2 was fixed in on support 3.

It should be noted that, as shown in fig. 1, a protection cover 43 is further assembled on one side of the battery cell 1 where the electrode leading-out terminal is disposed, and the electrode terminal of the battery cell 1 can be protected from being damaged by the protection cover 4, the embodiment of the present invention provides a temperature detection assembly 2 located on one side of the protection cover 4. The support 3 is fixed on the surface of the battery cell 1, the support 3 can also be used for bearing a connecting sheet, and the battery cells 1 are electrically connected through the connecting sheet. In addition, the support 3 may also serve as an insulating support, in which case the support 3 is an insulating support, for example, a plastic support. Support 3 can set up the mounting groove, and the mounting groove can make the local surface of electric core 1 expose, and then fixes back in the mounting groove at temperature detect component, and temperature detect component 2 can and electric core 1's surface contact.

It is right that the embodiment two provides the temperature detection assembly 2 before carrying out the detailed description, at first right the utility model discloses the application scene of the temperature detection assembly 2 that the embodiment two provided introduces.

The embodiment of the utility model provides a temperature-detecting subassembly 2 is applied to the temperature-detecting of electricity core 1. Electric core 1 is the unit of composition of battery package, also is the energy storage unit, and electric core 1 must have higher energy density to storage electric energy as much as possible, makes the vehicle possess farther continuation of the journey mileage, and in addition, the influence of temperature to electric core 1 is also more important, if the electric core 1 high temperature of a certain department, then the energy decay of electric core 1 of this department is then too fast, also can cause the influence to the continuation of the journey mileage of vehicle.

Based on this, need detect the real-time temperature of electricity core 1, when detecting the too high temperature of electricity core 1 of a certain department, then regulate and control electricity core 1 of this department to avoid the battery package to appear the condition of local overheat.

The temperature detecting assembly provided by the second embodiment of the present invention is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof. Fig. 1 is a partial structure diagram of a battery pack provided by an embodiment of the present invention, fig. 2 is a partial enlarged schematic diagram of a position a in fig. 1, and fig. 3 is a partial schematic diagram of a temperature acquisition assembly in contact with a battery cell provided by an embodiment of the present invention. As shown in fig. 1 to 3, the temperature detection assembly is fixed on a bracket 3, the bracket 3 is fixed on the battery cell 1, and the temperature detection assembly 2 includes a protection member 21, a fixing member 22 and a temperature sensor 23; the protection piece 21 is provided with an accommodating cavity, the temperature sensor 23 is fixed in the accommodating cavity, and the temperature sensor 23 is used for acquiring the temperature of the battery cell 1; the fixing member 22 is fixed on the bracket 3, the protecting member 21 is fixedly connected with the fixing member 22, and the protecting member 21 contacts with the battery cell 1.

As shown in fig. 4 and 5, the temperature detection assembly 2 includes a protector 21, a fixing member 22, and a temperature sensor 23. In addition, the temperature detection assembly 2 may further include a sampling harness 24 for transmitting measurement data information and a processor for processing information, specifically, a first end of the sampling harness 24 is electrically connected to the temperature sensor 23, and a second end of the sampling harness 24 is electrically connected to the processor, so that temperature information acquired by the temperature sensor 23 may be directly transmitted to the processor through the sampling harness 24, and then the processor regulates and controls the electric core 1 according to the acquired temperature information, so as to avoid that the energy attenuation of the electric core 1 at a certain position is too fast due to an excessively high temperature of the electric core 1 at the certain position.

The temperature sensor 23 fixed at the end of the sampling wire harness 24 can be a negative temperature coefficient thermistor or a positive temperature coefficient thermistor, and the embodiment of the utility model provides a do not limit this.

In one possible implementation, the temperature sensor 23 may be a negative temperature coefficient thermistor. The temperature sensor 23 is made of metal oxides such as manganese, cobalt, nickel, copper and the like as main materials by adopting a ceramic process, so that the temperature sensor has the property of a semiconductor, and when the temperature is low, the number of current carriers of the negative temperature coefficient thermistor is small, so that the resistance value of the negative temperature coefficient thermistor is high; as the temperature increases, the number of carriers increases and the resistance value of the ntc thermistor decreases. Thus, under the condition that the first end of the sampling wire harness 24 is electrically connected with the temperature sensor 23, and the second end of the sampling wire harness 24 is electrically connected with the processor, when the temperature of the electric core 1 at a certain position rises, the resistance value of the temperature sensor 23 connected at the position is reduced, the corresponding current information changes, and the processor can judge the temperature condition of the electric core 1 at the position based on the change condition of the current, generally, the temperature measurement precision of the electric core 1 needs to reach +/-0.5 ℃, the temperature resolution needs to reach 0.1 ℃, the temperature measurement range is-40 ℃ to 150 ℃, and the temperature sensor 23 can meet the temperature measurement requirement of the electric core 1 when being a negative temperature coefficient thermistor because the change range at room temperature is 100 to 1000000 ohms and the temperature coefficient is-2% to-6.5%.

In another possible implementation, the temperature sensor 23 may be a positive temperature coefficient thermistor. Such a temperature sensor 23 is sensitive to temperature and exhibits different resistance values at different temperatures. The positive temperature coefficient thermistor has a larger resistance value at a higher temperature. In this way, when the first end of the sampling harness 24 is electrically connected to the temperature sensor 23 and the second end of the sampling harness 24 is electrically connected to the processor, when the temperature of the battery cell 1 at a certain location increases, the resistance value of the temperature sensor 23 connected to the certain location increases, and the corresponding current information changes, so that the processor can determine the temperature condition of the battery cell 1 at the certain location based on the change condition of the current.

In order to prevent the temperature sensor 23 from falling off or being damaged during the assembly or the running of the vehicle, in the embodiment of the present invention, the temperature sensor 23 is fixed in the protector 21.

Specifically, the protection member 21 may be a rectangular parallelepiped, a cylinder, or some other workpiece, which is not limited by the embodiment of the present invention. If the installation difficulty of the protection member 21 and the contact area between the protection member 21 and the battery cell 1 are considered, in the embodiment of the present invention, it is preferable that the protection member 21 is a rectangular parallelepiped workpiece. As shown in fig. 6, the interior of the protection member 21 may be opened with a receiving cavity, which may be a through hole or a blind hole. The temperature sensor 23 is fixed in the accommodating cavity, in one possible implementation, the temperature sensor 23 can be clamped with the accommodating cavity, and in another possible implementation, the temperature sensor 23 can be bonded in the accommodating cavity. Specifically, after the temperature sensor 23 is accommodated in the accommodating cavity, the temperature sensor 23 can be fixed in the accommodating cavity by injecting glue or the like, so that the temperature sensor 23 is prevented from falling off from the accommodating cavity in the assembling process or the vehicle running process. In addition, the temperature sensor 23 is fixed in the accommodation cavity, and the bottom surface of the protection member 21 is in contact with the surface of the battery cell 1, so that heat generated from the battery cell 1 can be directly transmitted to the temperature sensor 23 through the protection member 21, so that the temperature sensor 23 senses the heat.

Alternatively, the protective member 21 may be a heat conductive member.

The embodiment of the utility model provides an in, when protection piece 21 is the higher heat-conducting member of coefficient of heat conductivity, the heat that electric core 1 produced can be transmitted temperature sensor 23 by protection piece 21 in, the temperature loss of this in-process is less, and then makes the data that temperature sensor 23 detected more accurate.

Further, the protective member 21 is any one of a heat conductive silicone member, a heat conductive silicone grease member, a heat conductive mica protective member, a heat conductive ceramic member, or a heat conductive silicone member.

The heat conductive silicone grease has a thermal conductivity of 1W/mK to 5W/mK, and the heat conductive mica has a thermal conductivity of 0.419W. (m.K)^-1～0.670W.(m.K)^-1The thermal conductivity of the thermal conductive ceramic is 3W/m.k to 5W/m.k, and the thermal conductivity of the thermal conductive silicone is 1.2W/m.k, so that when the protection member 21 is any one of the thermal conductive silicone member, the thermal conductive mica member, the thermal conductive ceramic member, or the thermal conductive silicone member, the protection member 21 can have a high thermal conductivity, and thus, the heat generated from the battery cell 1 can be transferred from the protection member 21 to the temperature sensor 23.

After temperature sensor 23 is fixed in protection piece 21, in order to avoid protection piece 21 to take place to remove at the in-process that the vehicle went, in the embodiment of the utility model provides an embodiment, make protection piece 21 can be firm support press on the surface of electric core 1 through the cooperation of mounting 22 and support 3 is connected.

Specifically, as shown in fig. 6, the protection member 21 is fixedly connected to the fixing member 22, the protection member 21 contacts with the battery cell 1, and the fixing member 22 is fixedly connected to the bracket 3. For example, the first surface of the protection member 21 contacts with the surface of the battery cell 1, the second surface of the protection member 21 is fixedly connected with the fixing member 22, and the fixing member 22 is fixedly connected with the bracket 3, wherein the first surface and the second surface may be two surfaces opposite to the protection member 21, or two surfaces intersecting with the protection member 21, which is not limited in the embodiment of the present invention. Further, in the case that the first surface and the second surface are two opposite surfaces of the protection member 21, the fixing member 22 may be pressed against the second surface of the protection member 21, so that the first surface of the protection member 21 contacts with the surface of the battery cell 1, and the fixing member 22 is fixedly connected with the bracket 3, so that the protection member 21 may be fixed on the surface of the battery cell 1. It should be further noted that the fixing member 22 may be clamped to the bracket 3, may also be adhered to the bracket 3, or may be fixedly connected by a fastening member such as a bolt, which is not limited in the embodiment of the present invention.

Alternatively, the fixing member 22 is snap-fixed to the holder 3.

Specifically, in the embodiment of the present invention, the fixing member 22 can be a rectangular plate, a triangular plate, or a plate of other shapes, and is fixed to the bracket 3 by the fixing member 22, so that the fixing member 22 can be fixed to the bracket 3, and further, the fixing between the fixing member 22 and the protection member 21 is more firm by the limitation of the bracket 3.

Alternatively, as shown in fig. 3 and fig. 6, the fixing member 22 includes a first connecting plate 221 and a second connecting plate 222 that are connected, the protection member 21 is disposed on a side of the first connecting plate 221 near the battery cell 1, and the first connecting plate 221 and the second connecting plate 222 are respectively snap-fitted to the bracket 3.

Specifically, the plane where the first connecting plate 221 is located intersects with the plane where the second connecting plate 222 is located, and the bracket 3 abuts against the top surface of the first connecting plate 221, so that the bottom surface of the first connecting plate 221 abuts against the top surface of the protection member 21, and in order to avoid the single-side tilting of the fixing member 22, the second connecting plate 222 is clamped with the bracket 3, so that the bottom surface of the protection member 21 can firmly abut against the surface of the electric core 1. It should be noted that the fixing member 22 may also be made of a plastic material, and since the plastic material has a certain elasticity, on one hand, damage to the surface of the fixing member 22 due to hard contact during assembly can be avoided, and on the other hand, the elasticity of the plastic material can overcome the assembly error during assembly, so that the fixing member 22 can be clamped with the bracket 3 and can press against the protection member 21.

It should be noted that, as shown in fig. 6, the first connecting plate 221 may include a pressing plate 2211 and a clamping protrusion 2212, one end of the pressing plate 2211 is connected to the first end of the third connecting plate 223, the pressing plate 2211 extends in a direction away from the first end of the third connecting plate 223, and the clamping protrusion 2212 is located at the other end of the pressing plate 2211. The clamping protrusion 2212 includes a clamping surface facing a direction away from the electric core 1, the bracket 3 is pressed against the clamping surface, and the pressing plate 2211 is pressed against the second surface of the protection member 21. The clamping protrusion 2212 is mainly used for providing a clamping surface for the support 3, the clamping protrusion 2212 is arranged on one side of the pressing plate 2211, and the distance between the clamping protrusion 2212 and the surface of the electric core 1 is smaller than the distance between the clamping part 31 of the support 3 and the surface of the electric core 1, so that, as shown in fig. 4, the clamping part 31 of the support 3 can be lapped on the top surface of the clamping protrusion 2212, and the clamping surface of the clamping protrusion 2212 and the clamping part 31 of the support 3 are in interference fit, so that the pressing plate 2211 is always subjected to a force close to the direction of the electric core 1, and the bottom surface of the pressing plate 2211 is pressed on the top surface of the protection piece 21, so that the protection piece 21 and the electric core 1 are fixed more firmly.

Alternatively, as shown in fig. 6, a side of the first connecting plate 221 facing away from the protection member 21 is provided with a fitting projection 2212, and the fitting projection 2212 extends in a direction away from the battery cell 1.

It should be noted that, under the condition that the assembling protrusion 2212 extends along the direction away from the electric core 1, the assembling protrusion 2212 protrudes from the top surface of the pressing plate 2211, so that during assembling, a certain holding point can be provided through the assembling protrusion 2212, and the operation of an installer is more convenient.

Optionally, the protection member 21 is adhesively fixed to a side of the fixing member 22 close to the battery cell 1. Specifically, the protection member 21 is adhesively fixed to one side of the first connection plate 221 of the fixing member 22, which is close to the battery cell 1.

After the protection member 21 is adhesively fixed to one side of the first connecting plate 221, the protection member 21 and the fixing member 22 form a whole, so that under the condition that the fixing member 22 and the bracket 3 are fixed, even under the condition that the vehicle runs, relative displacement does not occur between the protection member 21 and the fixing member 22, and the overall stability of the temperature detection assembly 2 provided by the embodiment of the invention is further improved.

Optionally, the fixing member 22 further includes a third connecting plate 223, the third connecting plate 223 is connected between the first connecting plate 221 and the second connecting plate 222, the third connecting plate 223 and the first connecting plate 221 enclose a limiting cavity, the protecting member 21 is disposed in the limiting cavity, and the second connecting plate 222 and the third connecting plate 223 extend along a direction from the protecting member 21 to the first connecting plate 221 and a direction away from each other.

Specifically, a third connecting plate 223 is further included between the second connecting plate 222 and the first connecting plate 221, the third connecting plate 223 and the first connecting plate 221 enclose a limiting cavity, and the protection member 21 is disposed in the limiting cavity, so that after the first connecting plate 221 and the bracket 3 are clamped, the protection member 21 is fixed between the bracket 3 and the third connecting plate 223, the protection member 21 cannot slide along the surface of the battery cell 1, and the position of the protection member 21 is fixed. Further, since the second and

third connection plates

222 and 223 extend in the direction from the protector 21 to the first connection plate 221 and in the direction away from each other, when the second connection plate 222 or the first connection plate 221 is subjected to a force, the second and

third connection plates

222 and 223 may be separated to both sides, so that the gap between the second connection plate 222 and the first connection plate 221 is increased. In the process of increasing the gap between the second connecting plate 222 and the first connecting plate 221, a part of the pressure can be removed, thereby reducing the overall pressure of the fixing member 22. It should be noted that, under the condition that the fixing member 22 is a plastic member with elasticity, the third connecting plate 223 may provide a certain buffer, and under the condition that the stress on the fixing member 22 is relatively large, the local deformation of the third connecting plate 223 may cause the pressure to be dispersed to the two sides of the third connecting plate 223, thereby preventing the fixing member 22 from being damaged due to the relatively large local stress on the fixing member 22, and further preventing the fixing member 21 from being fixed.

Optionally, as shown in fig. 6, the second connection board 222 includes a board body 2221 and a shoulder 2222 disposed at one end of the board body 2221 away from the battery cell 1, a position-limiting portion 22221 is disposed at one side of the shoulder 2222 away from the first connection board 221, in a direction from the protective part 21 to the first connection board 221, the position-limiting portion 22221 is away from the bracket 3 relative to the board body 2221, and when an end of the board body 2221 away from the battery cell 1 abuts against the bracket 3, a gap exists between the position-limiting portion 22221 and the bracket 3.

It should be noted that one end of the plate body 2221 is connected to the third connecting plate 223, the other end of the plate body 2221 is provided with a shoulder 2222, one side of the shoulder 2222, which is away from the first connecting plate 221, is provided with a limiting portion 22221, the limiting portion 22221 includes a first limiting surface 2223, the end of the plate body 2221, which is away from the battery cell 1, includes a second limiting surface 2224, the first limiting surface 2223 faces the battery cell 1, and the second limiting surface 2224 faces away from the battery cell 1. As shown in fig. 4 and fig. 6, the bracket 3 may include a clamping head 32, the clamping head 32 presses against the second limiting surface 2224, the clamping head 32 always gives the plate 2221 a force in a direction close to the battery cell 1, and similarly, the first connecting plate 221 always receives a force in a direction close to the battery cell 1, so that the first connecting plate 221 always presses against the protecting member 21, and the protecting member 21 and the battery cell 1 are fixed more firmly.

It should be noted that, when the end of the plate 2221 away from the battery cell 1 abuts against the bracket 3, there is a gap between the limiting portion 22221 and the bracket 3, and when the fixing member 22 is under external pressure, because there is a gap between the limiting portion 22221 and the bracket 3, the limiting portion 22221 and the bracket 3 are not in contact with each other, and further when the temperature detection assembly 2 is under pressure, the limiting portion 22221 may be in contact with the bracket 3 first, so that the bracket 3 can also bear a part of pressure, the pressure borne by the temperature sensor 23 is reduced, the protection of the temperature sensor 23 is further increased, and the service life of the temperature detector is further prolonged. In addition, the protruding shoulder 2222 may be located in the middle of one end of the plate 2221 away from the battery cell 1, so that two sides of the end of the plate 2221 may have a second limiting surface 2224, and further the second connecting plate 222 and the bracket 3 are fixed more firmly, and the distribution of the pressing force of the clamping head 32 of the bracket 3 on the second connecting plate 222 is more uniform, thereby further increasing the stability of the whole device.

As can be seen from the above embodiments, in the embodiment of the present invention, the temperature detection assembly 2 includes a protection member 21, a fixing member 22, and a temperature sensor 23; the protection piece 21 is provided with an accommodating cavity, the temperature sensor 23 is fixed in the accommodating cavity, and the temperature sensor 23 is used for acquiring the temperature of the battery cell 1; the protection member 21 is fixedly connected with the fixing member 22, the protection member 21 is used for contacting with the battery cell 1, and the fixing member 22 is fixedly connected with the bracket 3. In this way, the bottom surface of the protection member 21 is tightly attached to the surface of the battery cell 1 by the fixed connection of the fixing member 22 and the protection member 21. In addition, the fixing piece 22 is fixedly connected with the bracket 3, so that the position of the fixing piece 22 is fixed, the protecting piece 21 cannot be changed in position in the assembling process or the vehicle running process, and the temperature sensor 23 is fixed in the accommodating cavity formed in the protecting piece 21, so that the temperature sensor 23 cannot fall off in the assembling process or the vehicle running process, the surface of the temperature sensor 23 cannot be damaged under the protection of the protecting piece 21, and the service life of the temperature sensor 23 is further prolonged.

Besides, in the embodiment of the present invention, when the protection member 21 is a heat conducting member with a higher thermal conductivity, because the protection member 21 is tightly attached to the surface of the electrical core 1, the heat generated by the electrical core 1 can be transmitted to the temperature sensor 23 by the protection member 21, the temperature loss in the process is smaller, and the data detected by the temperature sensor 23 is more accurate.

It should be noted that, when the battery package includes the temperature detection assembly 2 as in any one of the second embodiment, make the battery package also have the beneficial effect of above-mentioned temperature detection assembly 2, the embodiment of the present invention is not repeated here.

It should be noted that, the embodiment three of the utility model provides a vehicle is still provided, this vehicle includes above-mentioned embodiment one the battery package, the beneficial effect that this vehicle possessed is unanimous with the beneficial effect that above-mentioned battery package possessed, the embodiment of the utility model provides a no longer describe to this again.

It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the apparatus of the embodiments of the present invention is not limited to performing functions in the order illustrated or discussed, but may include performing functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.

Claims

1. A temperature detection assembly is fixed on a bracket, and the bracket is fixed on an electric core;

2. The temperature sensing assembly of claim 1, wherein the fixture is snap-fit to the bracket.

3. The temperature detection assembly of claim 2, wherein the fixing member comprises a first connecting plate and a second connecting plate which are connected, the protection member is disposed on a side of the first connecting plate close to the battery cell, and the first connecting plate and the second connecting plate are respectively fixed to the bracket in a clamping manner.

4. The temperature sensing assembly of claim 3, wherein the mounting member further includes a third connecting plate, the third connecting plate is connected between the first connecting plate and the second connecting plate, the third connecting plate and the first connecting plate enclose a limiting cavity, the protection member is disposed in the limiting cavity, and the second connecting plate and the third connecting plate extend in a direction from the protection member to the first connecting plate and in a direction away from each other.

5. The temperature detecting assembly according to claim 3, wherein the second connecting plate includes a plate body and a shoulder disposed at an end of the plate body facing away from the battery cell, a side of the shoulder facing away from the first connecting plate is provided with a limiting portion, the limiting portion is away from the bracket relative to the plate body in a direction from the protecting member to the first connecting plate, and when an end of the plate body facing away from the battery cell abuts against the bracket, a gap exists between the limiting portion and the bracket.

6. The temperature detection assembly of claim 1, wherein the protection member is adhesively fixed to a side of the fixing member adjacent to the battery cell.

7. The temperature sensing assembly of claim 1, wherein the protective member is a thermally conductive member.

8. The temperature sensing assembly of claim 7, wherein the protective member is any one of a thermally conductive silicone member, a thermally conductive silicone grease member, a thermally conductive mica member, a thermally conductive ceramic member, or a thermally conductive silicone member.

9. A battery pack, comprising a support, a cell, and the temperature detection assembly of any of claims 1-8, wherein the support is fixed to the cell, and the temperature detection assembly is fixed to the support.

10. A vehicle characterized in that the vehicle comprises the battery pack according to claim 9.