CN211519269U

CN211519269U - Electric automobile

Info

Publication number: CN211519269U
Application number: CN201922086907.5U
Authority: CN
Inventors: 周大卫; 唐志明; 文晓欢; 黄佳松
Original assignee: Huizhou Jocol Industrial Co ltd
Current assignee: Huizhou Jiake Sensing Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-09-18
Anticipated expiration: 2029-11-26

Abstract

An electric automobile comprises an automobile body assembly, a buffer assembly, a battery assembly and a temperature measuring assembly, wherein the automobile body assembly comprises a chassis; the buffer component comprises an ejector piece, an elastic piece and a buffer seat; the battery component comprises a box body and a battery piece; the temperature measurement subassembly includes a plurality of temperature measurement pieces, and in a temperature measurement piece, the temperature measurement piece includes probe, wire and polytetrafluoroethylene protective layer, the utility model discloses an electric automobile through setting up automobile body subassembly, buffering subassembly, battery pack and temperature measurement subassembly for temperature sensor can be high temperature resistant, corrosion-resistant and resistant striking, thereby can carry out temperature detection to every battery, and can prevent that the power battery from bumping so that temperature sensor is destroyed.

Description

Electric automobile

Technical Field

The utility model relates to a technical field of car especially relates to an electric automobile.

Background

Electric automobile refers to and uses the electric energy as the power supply, through the car that motor drive travel, belongs to new energy automobile, including pure electric vehicles, hybrid electric vehicles and fuel cell electric vehicles, electric vehicles's constitution includes: the electric driving and control system is the core of an electric automobile and is also the biggest difference of the electric automobile from an internal combustion engine automobile, and the electric driving and control system comprises a driving motor, a power supply and a speed regulation control device of the motor, wherein the power supply is a power battery.

The power battery is a main or only energy source of the electric vehicle, the power battery generates heat during charging and discharging, in order to enable the power battery to be safely used, a temperature sensor is required to be used for detecting the power battery, however, in the conventional temperature detection method, the temperature sensor is mounted and fixed on a housing of the power battery, and the temperature of the battery is detected by detecting the temperature of the housing of the battery assembly, however, the temperature detection method easily causes a delay in temperature detection, that is, after the internal battery is heated due to a fault, the housing of the battery assembly is heated and then can be detected by the temperature sensor, however, when the temperature sensor detects the temperature rise, the internal battery may be damaged by heat, even the battery assembly in a larger range is damaged, and therefore, the temperature sensor is required to directly detect the temperature of a single battery, however, the conventional temperature sensor cannot resist high temperature and corrosion, and is not suitable for a use environment in which the temperature of the battery cell is detected, further, if the electric vehicle runs on a bumpy road, the power battery can shake along with the vehicle frame, the power battery is composed of a plurality of battery cells, when the power battery shakes, the battery cells inside the power battery easily collide, and since the temperature sensor is mounted and fixed on the battery cell, the temperature sensor is likely to collide, but the conventional temperature sensor cannot effectively resist the collision; on the other hand, if the temperature sensor is in close proximity to the impact-resistant property of the temperature sensor, it is not ensured that the temperature sensor will not be damaged by impact, and therefore, the power battery still has a risk of being damaged by impact, that is, the temperature sensor inside the power battery still has a risk of being damaged by impact.

Therefore, how to make the temperature sensor able to resist high temperature, corrosion and impact to adapt to the service environment of the battery, and further, how to prevent the power battery from colliding so that the temperature sensor is damaged is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide an electric automobile for temperature sensor can be high temperature resistant, corrosion-resistant and resistant striking, thereby can carry out the temperature detection to battery monomer, and can prevent that the power battery from bumping so that temperature sensor is destroyed.

The purpose of the utility model is realized through the following technical scheme:

an electric vehicle comprising:

the vehicle body assembly comprises a chassis, and the chassis is provided with a buffer tank;

the buffer assembly comprises an ejector, an elastic piece and a buffer seat, the buffer seat is accommodated in the buffer groove, a positioning through hole is formed in the middle of the buffer seat, the ejector penetrates through the positioning through hole, and two ends of the elastic piece are respectively abutted against the ejector and the buffer seat;

the battery component comprises a box body and a battery piece, the box body is connected with the ejector piece, the box body is provided with a plurality of accommodating cavities, the battery piece comprises a plurality of battery parts, each battery part is accommodated in each accommodating cavity in a one-to-one correspondence mode, in one battery part, each battery part comprises a plurality of battery monomers and a plurality of isolating blocks, and each isolating block is connected with each battery monomer in a one-to-one correspondence mode; and

the temperature measuring component comprises a plurality of temperature measuring pieces, each temperature measuring piece is arranged on each battery monomer in a one-to-one correspondence mode, each temperature measuring piece comprises a probe, a lead and a polytetrafluoroethylene protective layer, the probes are connected with the battery monomers, the leads are connected with the probes, and the polytetrafluoroethylene protective layers are coated outside the probes and the leads.

In one embodiment, the ejector comprises an ejector rod, a limiting ring and an abutting column, the ejector rod penetrates through the positioning through hole, the limiting ring is connected with one end of the ejector rod, the abutting column is connected with the other end of the ejector rod, two ends of the elastic piece are respectively abutted against the abutting column and the buffer seat, and the box body is connected with the ejector rod.

In one embodiment, the limit ring is screwed on one end of the ejector rod.

In one embodiment, the stop collar has a diameter larger than the positioning through hole.

In one embodiment, the buffer seat is further provided with a position avoiding cavity, the position avoiding cavity is communicated with the positioning through hole, and the limiting ring is located in the position avoiding cavity.

In one embodiment, the buffer seat is further provided with a buffer cavity, the buffer cavity is communicated with the positioning through hole, and the elastic piece is located in the buffer cavity.

In one embodiment, the spacer is resilient.

In one embodiment, the probe is a thermistor.

In one embodiment, the wire comprises a core wire and an insulating layer, the core wire is connected with the probe, and the insulating layer is coated on the core wire.

In one embodiment, the battery assembly further includes a plurality of fixing members, and each of the fixing members is connected to each of the battery portions in a one-to-one correspondence.

Compared with the prior art, the utility model discloses at least, following advantage has:

the utility model discloses an electric automobile, which comprises an automobile body component, a buffer component, a battery component and a temperature measuring component, wherein the automobile body component comprises a chassis; the buffer component comprises an ejector piece, an elastic piece and a buffer seat; the battery component comprises a box body and a battery piece; the temperature measurement subassembly includes a plurality of temperature measurement pieces, and in a temperature measurement piece, the temperature measurement piece includes probe, wire and polytetrafluoroethylene protective layer, the utility model discloses an electric automobile through setting up automobile body subassembly, buffering subassembly, battery pack and temperature measurement subassembly for temperature sensor can be high temperature resistant, corrosion-resistant and resistant striking, thereby can carry out temperature detection to every battery, and can prevent that the power battery from bumping so that temperature sensor is destroyed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an electric vehicle according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the battery assembly of the electric vehicle shown in FIG. 1;

FIG. 3 is a sectional view of the buffering assembly of the electric vehicle shown in FIG. 1;

fig. 4 is a schematic structural view of the temperature measuring part of the electric vehicle shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It is noted that as used herein, reference to an element being "connected" to another element also means that the element is "in communication" with the other element, and fluid can be in exchange communication between the two.

In one embodiment, the electric automobile comprises an automobile body assembly, a buffer assembly, a battery assembly and a temperature measuring assembly, wherein the automobile body assembly comprises a chassis, and the chassis is provided with a buffer groove; the buffer assembly comprises an ejector, an elastic piece and a buffer seat, the buffer seat is accommodated in the buffer groove, a positioning through hole is formed in the middle of the buffer seat, the ejector penetrates through the positioning through hole, and two ends of the elastic piece are respectively abutted against the ejector and the buffer seat; the battery component comprises a box body and a battery piece, the box body is connected with the ejector piece, the box body is provided with a plurality of accommodating cavities, the battery piece comprises a plurality of battery parts, each battery part is accommodated in each accommodating cavity in a one-to-one correspondence mode, in one battery part, each battery part comprises a plurality of battery monomers and a plurality of isolating blocks, and each isolating block is connected with each battery monomer in a one-to-one correspondence mode; temperature measurement subassembly includes a plurality of temperature measurement pieces, and each temperature measurement piece one-to-one sets up on each battery monomer, and in a temperature measurement piece, the temperature measurement piece includes probe, wire and polytetrafluoroethylene protective layer, and the probe is connected with the battery monomer, wire and probe connection, polytetrafluoroethylene protective layer cladding outside probe and wire, the utility model discloses an electric automobile through setting up automobile body subassembly, buffering subassembly, battery pack and temperature measurement subassembly for temperature sensor can be high temperature resistant, corrosion-resistant and crashproof, thereby can carry out temperature detection to every battery, and can prevent that the power battery from bumping so that temperature sensor is destroyed.

To better explain the electric vehicle and to better understand the concept of the electric vehicle, please refer to fig. 1 and fig. 2, an electric vehicle 10 includes a vehicle body assembly 100, a buffer assembly 200, a battery assembly 300 and a temperature measuring assembly 400, wherein the vehicle body assembly 100 includes a chassis 110, and the chassis 110 is provided with a buffer slot 111.

It should be noted that the chassis 110 is provided with the buffer slot 111, the battery is the main or only energy source of the electric vehicle, for the electric vehicle 10, the battery assembly 300 and the driving motor constitute the driving system, which is also the core device of the whole vehicle, because the battery assembly 300 contains energy, so excellent protection measures are required, in the utility model, by installing the battery assembly 300 on the chassis 110, not only the space of the electric vehicle 10 can be effectively used, but also the battery assembly 300 can be better protected, specifically, by providing the buffer slot 111 on the chassis 110, the battery assembly 300 is fixedly installed in the buffer slot 111 by using the buffer assembly 200, in an embodiment, the buffer slot 111 is disposed in the middle of the chassis 110, so that the battery assembly 300 can be better protected, in an embodiment, the buffer slot 111 is a rectangular slot, to the cuboid groove, including four sides and a bottom surface, after placing battery pack 300 in the cuboid groove, buffer assembly 200 is all installed respectively at four sides and the bottom surface in the cuboid groove, so, buffer assembly 200 can carry out the omnidirectional cushioning effect around from top to bottom to battery pack 300, furthermore, when electric automobile 10 bumps, also can utilize buffer assembly 200 to carry out quick shock attenuation to battery pack 300, thereby avoided the inside battery individuality of battery pack 300 to bump, can prevent that the temperature sensor between the battery individuality from bumping so that temperature sensor is damaged promptly, in an embodiment, automobile body subassembly 100 still includes the frame, the frame sets up on chassis 110.

Further, referring to fig. 1 again with reference to fig. 3, the buffer assembly 200 includes an ejector 210, an elastic member 220 and a buffer base 230, the buffer base 230 is accommodated in the buffer slot 111, a positioning through hole 231 is disposed at a middle position of the buffer base 230, the ejector 210 is disposed through the positioning through hole 231, and two ends of the elastic member 220 are respectively abutted to the ejector 210 and the buffer base 230.

It should be noted that the buffer base 230 is installed in the buffer slot 111, a positioning through hole 231 is opened in the middle position of the buffer base 230, the positioning through hole 231 penetrates through the buffer base 230, the ejector 210 can pass through the positioning through hole 231, that is, the ejector 210 can move relative to the buffer base 230 in the positioning through hole 231, specifically, the buffer base 230 is stationary, the position of the ejector 210 relative to the buffer base 230 can be changed, the buffer base 230 moves in the positioning through hole 231, two ends of the elastic member 220 respectively abut against the ejector 210 and the buffer base 230, specifically, one end of the elastic member 220 abuts against the buffer base 230, the other end of the elastic member 220 abuts against the ejector 210, and the elastic member 220 is sleeved in the ejector 210, the ejector 210 can originally move in the positioning through hole 231 without hindrance, however, since the ejector 210 is connected to the elastic member 220, under the elastic force of the elastic member 220, the ejector 210 is supported by the elastic member 220, specifically, when a pressure is applied to the ejector 210, the ejector 210 receives the rebounding force of the elastic member 220 while the positioning through hole 231 moves, and the elastic resistance received by the ejector 210 is larger as the relative distance between the ejector 210 and the buffer seat 230 is smaller, which is the principle of elastic buffering, and an article connected to the ejector 210 can be effectively buffered by using the elastic resistance of the elastic member 220, in an embodiment, the elastic member 220 is a spring.

Further, referring to fig. 2 again, the battery assembly 300 includes a box 310 and a battery piece 320, the box 310 is connected to the pushing member 210, the box 310 is provided with a plurality of accommodating cavities 311, the battery piece 320 includes a plurality of battery portions 321, each battery portion 321 is accommodated in each accommodating cavity 311 in a one-to-one correspondence, in one battery portion 321, each battery portion 321 includes a plurality of battery cells 321a and a plurality of isolating blocks 321b, and each isolating block 321b is connected to each battery cell 321a in a one-to-one correspondence.

It should be noted that the box body 310 is fixed on the pushing member 210, a plurality of accommodating cavities 311 are arranged in the box body 310, the accommodating cavities 311 are not communicated, and the isolation plates between the accommodating cavities 311 are plates with reinforced strength, so that the accommodating cavities 311 are not communicated by using the plates with reinforced strength, the battery piece 320 refers to the sum of all batteries in all the accommodating cavities 311, the battery part 321 refers to the sum of all the batteries in one accommodating cavity 311, one battery part 321 is fixed in one accommodating cavity 311, the plurality of battery parts 321 and the plurality of accommodating cavities 311 are in a one-to-one corresponding relationship, one battery part 321 includes a plurality of battery monomers 321a and a plurality of isolation blocks 321b, the plurality of battery monomers 321a are arranged in sequence, and an isolation block 321b is arranged between every two adjacent battery monomers 321a, in an embodiment, four isolation blocks 321b are arranged between every two adjacent battery monomers 321a, by using the isolation blocks 321b, a gap can exist between every two battery cells 321a, so that effective ventilation and heat dissipation can be achieved between the batteries.

Further, referring to fig. 2 again in conjunction with fig. 4, the temperature measuring assembly 400 includes a plurality of temperature measuring elements 410, each of the temperature measuring elements 410 is disposed on each of the battery cells 321a in a one-to-one correspondence, in one of the temperature measuring elements 410, the temperature measuring element 410 includes a probe 411, a lead 412 and a teflon protective layer 413, the probe 411 is connected to the battery cell 321a, the lead 412 is connected to the probe 411, and the teflon protective layer 413 covers the probe 411 and the lead 412.

It should be noted that, the temperature measuring element 410 is a temperature sensor, the temperature measuring element 410 is installed and fixed on the battery cell 321a, in an embodiment, the temperature measuring element 410 may be adhered to the outer sidewall of the battery cell 321a by adhering, or the temperature measuring element 410 is fixed on the outer sidewall of the battery cell 321a by using a bandage or the like, the probe 411 is a detection head of the temperature measuring element 410, the temperature measuring element 410 is fixed on the battery cell 321a by using the probe 411 to detect the temperature of the battery cell 321a, actually, the probe 411 is fixed on the battery cell 321a, the lead 412 is connected to the probe 411, so that the detected temperature of the battery cell 321a can be obtained by detecting the resistance value at the end of the lead 412 through corresponding calculation, the polytetrafluoroethylene protective layer 413 is a layer of polytetrafluoroethylene material, since polytetrafluoroethylene can resist acid, alkali and high temperature, and has certain intensity, therefore, the polytetrafluoroethylene protective layer 413 made of polytetrafluoroethylene can resist high temperature, corrosion and impact, so, after wrapping the polytetrafluoroethylene protective layer 413 on the outer surfaces of the probe 411 and the lead 412, the temperature measuring piece 410 can meet the use requirement, that is, the temperature measuring piece 410 can resist high temperature, corrosion and impact.

Further, referring to fig. 3 again, in an embodiment, the ejecting member 210 includes an ejecting rod 211, a limiting ring 212 and a supporting column 213, the ejecting rod 211 is disposed through the positioning through hole 231, the limiting ring 212 is connected to one end of the ejecting rod 211, the supporting column 213 is connected to the other end of the ejecting rod 211, two ends of the elastic member 220 are respectively abutted to the supporting column 213 and the buffer base 230, and the box 310 is connected to the ejecting rod 211.

It should be noted that the ejector rod 211 penetrates through the positioning through hole 231, that is, the ejector rod 211 penetrates through the positioning through hole 231, then the limit ring 212 is installed at one end of the ejector rod 211, so that the ejector rod 211 cannot exit from the positioning through hole 231 in one direction due to the action of the limit ring 212, then the elastic member 220 is installed at one end of the ejector rod 211 away from the limit ring 212, at this time, one end of the elastic member 220 abuts against the buffer seat 230, then the support column 213 is installed at the end of the ejector rod 211 away from the limit ring 212, at this time, the other end of the elastic member 220 abuts against the support column 213, at this time, the end of the ejector rod 211, which is desired to fix the limit ring 212, exits from the positioning through hole 231, because the end fixed by the limit ring 212 cannot pass through the positioning through hole 231, and the end of the ejector rod 211 moves in the opposite direction, because the two ends of the elastic member 220 abut against the support column 213 and the, make ejector pin 211 reverse direction motion can receive the bounce-back effort of elastic component 220, so, can play the effect of buffering, in an embodiment, spacing ring 212 spiro union is in ejector pin 211 one end, through the screw thread spiro union, can adjust the initial position of ejector pin 211 relative to buffer base 230, because support post 213 installation is fixed on ejector pin 211, can adjust the initial position of support post 213 relative to buffer base 230 promptly, thereby can carry out initial position adjustment to box 310 fixed on support post 213, thereby can make the initial position of box 310 can be adjusted to horizontal position.

Further, referring to fig. 3 again, in one embodiment, the diameter of the limiting ring 212 is larger than the diameter of the positioning through hole 231, so that the ejector rod 211 cannot be ejected from the positioning through hole 231 under the limiting action of the limiting ring 212.

Further, referring to fig. 3 again, in an embodiment, the buffer base 230 further defines an avoiding cavity 232, the avoiding cavity 232 is communicated with the positioning through hole 231, and the limiting ring 212 is located in the avoiding cavity 232.

It should be noted that, the avoiding cavity 232 is formed at one side close to the limit ring 212, and the avoiding cavity 232 is communicated with the positioning through hole 231, in an embodiment, the avoiding cavity 232 is larger than the limit ring 212, and the depth of the avoiding cavity 232 is larger than the stroke of the elastic member 220, so that even if the elastic member 220 is compressed to the limit stroke, the limit ring 212 is also in the avoiding cavity 232, so that the ejector rod 211 and the limit ring 212 can be well protected.

Further, referring to fig. 3 again, in an embodiment, the buffer base 230 further defines a buffer cavity 233, the buffer cavity 233 is communicated with the positioning through hole 231, and the elastic element 220 is located in the buffer cavity 233.

It should be noted that, a buffer cavity 233 is formed at one end of the buffer seat 230 close to the abutting column 213, and the elastic member 220 is located in the buffer cavity 233, so that the ejector rod 211 and the elastic member 220 can be protected, and impurities such as dust can be prevented from falling into the elastic member 220, thereby affecting the elastic force of the elastic member 220, i.e. the buffering and damping effect of the buffer assembly 200.

Further, referring to fig. 3 again, in an embodiment, the isolation block 321b has elasticity, and the isolation block 321b is configured to have elasticity, so that the battery cell 321a contacting with the isolation block 321b can be better buffered and prevented from collision, and the collision possibility of the battery cell 321a is effectively reduced.

Further, referring to fig. 4 again, in one embodiment, the probe 411 is a thermistor.

The resistance value of the thermistor can be changed in response to a change in temperature, and specifically, the resistance value of the thermistor can be increased or decreased as the temperature increases, and the change in temperature can be calculated by measuring the resistance value of the thermistor and calculating the value.

Further, referring to fig. 4 again, in an embodiment, the conductive wire 412 includes a core wire 412a and an insulating layer 412b, the core wire 412a is connected to the probe 411, the insulating layer 412b covers the core wire 412a, and the insulating layer 412b covers the core wire 412a, so that the core wire 412a can be effectively prevented from being interfered by an external electrical signal, and the accuracy of temperature detection of the probe 411 is ensured.

Further, referring to fig. 2 again, in an embodiment, the battery assembly 300 further includes a plurality of fixing members 330, each fixing member 330 is connected to each battery portion 321 in a one-to-one correspondence, in one battery portion 321, the battery portion 321 includes a plurality of battery cells 321a and a plurality of spacers 321b, one fixing member 330 is connected to the battery portion 321, that is, one fixing member 330 fixes the plurality of battery cells 321a and the plurality of spacers 321b as a whole, so that the battery portion 321 is more conveniently and quickly mounted, and the mounting efficiency of the battery assembly 300 is greatly improved.

the utility model discloses an electric automobile 10, including body assembly 100, buffering subassembly, battery pack 300 and temperature measurement subassembly 400, body assembly 100 includes chassis 110; the buffer assembly 200 includes an ejector 210, an elastic member 220 and a buffer base 230; the battery assembly 300 includes a case 310 and a battery 320; temperature measurement subassembly 400 includes a plurality of temperature measurement pieces 410, and in a temperature measurement piece 410, the temperature measurement piece includes probe 411, wire 412 and polytetrafluoroethylene protective layer 413, the utility model discloses an electric automobile 10 through setting up automobile body subassembly 100, buffering subassembly 200, battery pack 300 and temperature measurement subassembly 400 for temperature sensor can be high temperature resistant, corrosion-resistant and crashproof, thereby can carry out temperature detection to every battery, and can prevent that the power battery from colliding so that temperature sensor is damaged.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An electric vehicle, comprising:

2. The electric automobile of claim 1, wherein the ejector member comprises an ejector rod, a limiting ring and a holding column, the ejector rod is inserted into the positioning through hole, the limiting ring is connected with one end of the ejector rod, the holding column is connected with the other end of the ejector rod, two ends of the elastic member are respectively abutted against the holding column and the buffer seat, and the box body is connected with the ejector rod.

3. The electric vehicle of claim 2, wherein the retainer ring is screwed to one end of the ejector rod.

4. The electric vehicle of claim 2, wherein the stop collar has a larger diameter than the locating through hole.

5. The electric automobile of claim 2, wherein the buffer seat is further provided with a position avoiding cavity, the position avoiding cavity is communicated with the positioning through hole, and the limit ring is located in the position avoiding cavity.

6. The electric automobile of claim 1, wherein the buffer seat further defines a buffer cavity, the buffer cavity is communicated with the positioning through hole, and the elastic member is located in the buffer cavity.

7. The electric vehicle of claim 1, wherein the spacer is resilient.

8. The electric vehicle of claim 1, wherein the probe is a thermistor.

9. The electric vehicle of claim 1, wherein the conductive wire comprises a core wire and an insulating layer, the core wire is connected with the probe, and the insulating layer is coated on the core wire.

10. The electric vehicle of claim 1, wherein the battery assembly further comprises a plurality of fasteners, each fastener being connected to each battery portion in a one-to-one correspondence.