CN218896699U - Battery - Google Patents

Abstract

The utility model discloses a battery, comprising: the shell is internally provided with an installation space, and is provided with an opening and a plurality of heat dissipation air inlets; the plurality of electric cores are sequentially arranged in the installation space along the first direction; the main air pipe is arranged in the installation space and extends along the first direction, one end of the main air pipe is arranged in the opening and provided with a main air outlet, the side end of the main air pipe, which is close to the battery cell, is provided with a main air inlet, a sealing ring is arranged between the main air pipe and the battery cell, and the main air inlet is positioned in an area surrounded by the sealing ring; an auxiliary air pipe is arranged between any two adjacent electric cores, each auxiliary air pipe is provided with an auxiliary air inlet and an auxiliary air outlet, the auxiliary air outlet corresponds to the main air inlet, and the auxiliary air inlet corresponds to the heat dissipation air inlet; the exhaust fan is arranged in the main air outlet. The battery can effectively inhibit the loss and the random phenomenon of natural wind, improve the utilization efficiency of the natural wind, balance the temperature of the battery during charging and discharging, and inhibit the thermal runaway heat spreading of the battery.

Description

Battery

technical field

The utility model relates to the technical field of batteries, in particular to a battery.

Background technique

In recent years, with the progress and development of science and technology, energy storage battery has become the focus of people's research. It promotes the development of high-tech products, but also restricts the development of this industry. From mobile phones to trams to power stations and even aerospace, the energy of such mobile technology products is mostly provided by batteries. The development of core batteries has been relatively slow, so that it is even one of the factors holding back the development of large-scale energy storage and automotive industries. With the continuous optimization of the functions and performance of electronic products, higher-quality power supply is required. Therefore, in recent years, the energy density of energy storage batteries in the industry has become higher and higher. When the energy density of the battery, that is, the capacity, continues to increase, more heat is generated during charging and discharging, which is more difficult to control, which poses new challenges to the cooling system of the energy storage system.

At present, the most widely used in the industry is the air-cooled cooling system with mature technology and relatively more cost-effective. By installing a ventilated harmonica pipe between the batteries, convective heat exchange is formed by means of ventilation or blowing, so that the heat generated by the battery during operation can be quickly exported; at the same time, the main air duct is set to quickly discharge the heat generated by the battery through the main air duct . This solution can effectively control the temperature rise of the battery during operation and keep it within a reasonable temperature threshold. At the same time, it can reduce the temperature difference of the battery in the sub-box, improve the consistency of battery performance, and thus improve the cycle life of the battery. However, the main air duct is not sealed, and the control of the distribution of wind speed is weak, which is not conducive to the uniform heating of the battery and increases the temperature difference between the batteries. Therefore, designing a structural air duct that can control the distribution of wind speed and applying it to air-cooled subrack products has become an urgent problem to be solved in the development of the energy storage industry.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. Therefore, an object of this utility model is to propose a battery to solve the problem in the prior art that the control of the distribution state of the wind speed is weak, which is not conducive to the uniform heating of the battery and increases the temperature difference between the batteries.

The battery according to the embodiment of the present invention includes: a casing, an installation space is provided inside the casing, an opening and a plurality of heat dissipation air inlets are arranged on the casing; The first direction is sequentially arranged in the installation space; the main air pipe is arranged in the installation space and extends along the first direction, and one end of the main air pipe is arranged in the opening And a main air outlet is provided, a main air inlet is provided at the side end of the main air duct close to the electric core, a sealing ring is provided between the main air duct and the electric core, and the main air inlet is located at In the area surrounded by the sealing ring; an auxiliary air duct, the auxiliary air duct is provided between any two adjacent cells, each of the auxiliary air ducts has an auxiliary air inlet and an auxiliary air outlet, The auxiliary air outlet corresponds to the main air inlet, and the auxiliary air inlet corresponds to the heat dissipation air inlet; the exhaust fan is arranged in the main air outlet.

According to the battery of the embodiment of the utility model, by setting a sealing ring between the main air duct and the battery cell, the main air inlet is located in the area surrounded by the sealing ring, so that the loss of natural wind and the phenomenon of random stringing can be effectively suppressed, and the protection against The utilization efficiency of natural wind balances the temperature of the battery during charging and discharging, and inhibits the thermal runaway and heat spread of the battery.

In some embodiments, the opening and the main air outlet are located at one end of the first direction.

In some embodiments, the main air inlet includes: a first air inlet, the first air inlet is close to the main air outlet; a second air inlet, the second air inlet is far away from the main air outlet; a third An air inlet, the third air inlet is arranged between the first air inlet and the second air inlet, the height of the third air inlet is smaller than that of the first air inlet and the second air inlet high.

In some embodiments, the height of the third air inlet decreases gradually towards the direction of the main air outlet.

In some embodiments, the auxiliary air duct includes a heat-conducting metal body and an insulating film, and the insulating film is coated on the heat-conducting metal body.

In some embodiments, a plurality of air cavities are formed inside the auxiliary air duct, the air cavities extend along the length direction of the auxiliary air duct, one end of each of the air cavities communicates with the auxiliary air inlet, and the other One end communicates with the auxiliary air outlet.

In some embodiments, each of the heat dissipation air inlets includes a plurality of sub-air inlets, and the number of the sub-air inlets is equal to that of the air cavity and corresponds to each other.

In some embodiments, it also includes: a first end plate, the first end plate abuts against the electric core at one end of the first direction; a second end plate, the second end plate abuts against On the electric core at the other end of the first direction; a fixing band, the fixing band is sheathed on the first end plate, the second end plate and the electric core.

In some embodiments, the first end plate, the second end plate, the fixing belt, the auxiliary air duct and a plurality of the electric cores form a module, and the number of the modules is two, two The modules are arranged on both sides of the main air duct in the first direction.

In some embodiments, the first end plate, the second end plate, the fixing belt, the auxiliary air duct and a plurality of the battery cells form a module, the battery further includes a wiring harness plate, the The wiring harness board is arranged on the module and extends along the first direction, and the wiring harness board is provided with a plurality of temperature detection points.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is the structural representation of battery in the embodiment of the utility model;

Fig. 2 is the enlarged view of part I in Fig. 1 of the utility model;

Fig. 3 is a schematic diagram of the main air duct of the present utility model;

Fig. 4 is a partial structural schematic diagram of a battery in an embodiment of the present invention;

Fig. 5 is the plan view of Fig. 4 of the utility model;

Fig. 6 is the enlarged view of II part in Fig. 5 of the utility model;

Fig. 7 is the left side view of Fig. 4 of the utility model;

Fig. 8 is the enlarged view of III part in Fig. 7 of the utility model;

Fig. 9 is a top view of Fig. 1 of the utility model;

Fig. 10 is the temperature change figure of 14 temperature detection points in the utility model embodiment;

Fig. 11 is a diagram of the maximum temperature difference of the temperature detection points at the same time in the embodiment of the utility model.

Reference signs:

100. battery;

10. Shell; 101. Sub air inlet;

20, electric core; 201, first end plate; 202, second end plate; 203, fixing belt;

30. Main air duct; 301. Main air outlet; 302. Main air inlet; 3021. First air inlet; 3022. Second air inlet; 3023. Third air inlet;

40. Sealing ring;

50. Auxiliary air duct; 501. Thermally conductive metal body; 5011. Auxiliary air inlet; 502. Insulating film;

60. Exhaust fan;

70. Wiring harness board; 701. Temperature detection point;

80. BMS.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "centre", "length", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description , rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features, which are used to describe the features differently, without order or importance.

In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The following describes a battery 100 according to an embodiment of the present invention with reference to FIGS. 1-9 .

As shown in FIG. 1 , FIG. 2 and FIG. 4 , the battery 100 according to the embodiment of the present invention includes: a casing 10 , a battery cell 20 , a main air duct 30 , a sealing ring 40 , an auxiliary air duct 50 and an exhaust fan 60 .

According to the battery 100 of the embodiment of the present invention, the housing 10 is provided with an installation space, and the housing 10 is provided with an opening and a plurality of heat dissipation air inlets; there are a plurality of battery cells 20, which are sequentially arranged in the installation space along the first direction The main air duct 30 is located in the installation space and extends along the first direction. One end of the main air duct 30 is located in the opening and is provided with a main air outlet 301. The side end of the main air duct 30 near the electric core 20 is provided with a main Air inlet 302, a sealing ring 40 is provided between the main air duct 30 and the battery cell 20, and the main air inlet 302 is located in the area surrounded by the sealing ring 40; an auxiliary air duct is provided between any two adjacent battery cells 20 50, each auxiliary air duct 50 has an auxiliary air inlet 5011 and an auxiliary air outlet, the auxiliary air outlet corresponds to the main air inlet 302, and the auxiliary air inlet 5011 corresponds to the heat dissipation air inlet; the exhaust fan 60 is arranged in the main air outlet 301.

It can be understood that, referring to FIG. 1 and FIGS. 5-8 , the housing 10 is a cuboid structure with an installation space inside, and a heat dissipation air inlet is opened on the side of the housing 10 . The exhaust fan 60 provides a power source, so that the outside air enters the auxiliary air duct 50 between adjacent battery cells 20 from the heat dissipation air inlet, that is, enters through the auxiliary air inlet 5011, and then is discharged from the auxiliary air outlet. The heat generated during charging and discharging of the battery 100 is taken away by the principle of convective heat exchange and collected into the main air duct 30 , and finally discharged from the main air outlet 301 . During this process, due to the sealing ring 40 attached to the circumferential edge between the main air duct 30 and the battery core 20, the casing 10, the battery core 20 and the main air duct 30 are tightly combined, thereby effectively reducing useless The generation of wind improves the working efficiency of the exhaust fan 60 , better balances the temperature of the battery 100 during charging and discharging, increases the rate of heat dissipation of the battery 100 to the environment, and increases the working rate of the battery 100 . It should be noted that the main air duct 30 can be made of plastic materials such as PC+ABS/PA66+GF30/PA6+GF30/PP+GF20 to reduce costs and also play the role of insulation protection. The auxiliary air duct 50 can be made of duct harmonica.

According to the battery 100 of the embodiment of the present invention, the sealing ring 40 is provided between the main air duct 30 and the battery cell 20, and the main air inlet 302 is located in the area surrounded by the sealing ring 40, so that the loss of natural wind can be effectively suppressed and chaos phenomenon, improve the utilization efficiency of natural wind, balance the temperature of the battery 100 during charging and discharging, and restrain the thermal runaway and heat spread of the battery 100.

In some embodiments, referring to FIG. 1 , the opening and the main air outlet 301 are located at one end in the first direction. It can be understood that both the opening and the main air outlet 301 are located at the front end of the main air duct 30 , so that more heat generated by the battery 100 is taken away. It should be noted that the "first direction" refers to the front-back direction in FIG. 1 .

In some embodiments, referring to Fig. 3, the main air inlet 302 includes a first air inlet 3021, a second air inlet 3022 and a third air inlet 3023, the first air inlet 3021 is close to the main air outlet 301; the second air inlet 3022 is far away from the main air inlet 3023; The air outlet 301 ; the third air inlet 3023 is located between the first air inlet 3021 and the second air inlet 3022 , and the height of the third air inlet 3023 is smaller than the height of the first air inlet 3021 and the second air inlet 3022 . It can be understood that, on the side of the main air duct 30, a first air inlet 3021, a third air inlet 3023 and a second air inlet 3022 are arranged from front to back, and the first air inlet 3021 and the second air inlet 3022 at the front and rear ends The 3022 is set at a higher height to enhance the wind force at the corners and prevent stagnant air in the corners.

In some embodiments, referring to FIG. 3 , the height of the third air inlet 3023 gradually decreases toward the main air outlet 301 . It can be understood that the height of the third inlet and outlet gradually decreases from the rear to the front, so as to solve the step-shaped wind speed distribution caused by the difference in distance from the exhaust fan 60, improve the consistency of the wind speed at the front and rear air inlets, and weaken the Disturbance phenomenon of main air duct convergence.

In some embodiments, referring to FIG. 4 , the auxiliary air duct 50 includes a heat-conducting metal body 501 and an insulating film 502 , and the insulating film 502 is coated on the heat-conducting metal body 501 . It can be understood that when the battery 100 system is in normal operation, the battery cells 20 will release heat, and the auxiliary air duct 50 made of metal between the battery cells 20 has better convective heat transfer performance than the auxiliary air duct made of plastic material; On the other hand, a layer of insulating film 502 wrapped on the surface of the heat-conducting metal body 501 can have a certain insulating effect and protect the battery 100 . It should be noted that the heat-conducting metal body 501 can be made of 6061/6063 metal, which can effectively improve the heat conduction between the battery cell 20 and the auxiliary air duct 50 and enhance the heat conduction efficiency. The insulating film 502 can be an insulating blue film.

In some embodiments, referring to FIG. 4 , multiple air cavities are formed inside the auxiliary air duct 50, and the air cavities extend along the length direction of the auxiliary air duct 50. One end of each air cavity communicates with the auxiliary air inlet 5011, and the other end communicates with the auxiliary air inlet 5011. The air outlet is used to further improve the heat dissipation rate of the battery 100 . It should be noted that the "length direction" refers to the up-down direction in FIG. 4 .

In some embodiments, referring to FIG. 1 , each heat dissipation air inlet includes a plurality of sub-air inlets 101, and the number of sub-air inlets 101 and the air cavity are equal and correspond one-to-one, so that the resistance of natural wind entering the air cavity can be reduced, and the use of materials.

In some embodiments, referring to FIG. 1 and FIG. 2 , the battery 100 further includes a first end plate 201 , a second end plate 202 and a fixing band 203 , and the first end plate 201 stops against the cell 20 at one end in the first direction. ; The second end plate 202 stops against the cell 20 at the other end in the first direction; It can be understood that the battery cell 20 will expand during operation, and the longer the operation time, the greater the expansion force, and the fixing belt 203 can play a pre-tightening role. The battery cell 20 is the best working condition under the condition that the preload is 3000N. The first end plate 201 and the second end plate 202 play the role of equalizing the pre-tightening force, fixing the battery module and the positive and negative electrode protection bases.

In some embodiments, referring to FIG. 1 , the first end plate 201, the second end plate 202, the fixing belt 203, the auxiliary air duct 50 and a plurality of electric cores 20 constitute a module, and there are two modules, and the two modules are set On both sides of the main air duct 30 in the first direction, the two modules can be dissipated simultaneously, and the heat dissipation efficiency of the battery 100 can be improved.

In some embodiments, referring to FIG. 1 , the first end plate 201, the second end plate 202, the fixing belt 203, the auxiliary air duct 50 and a plurality of battery cells 20 form a module, and the battery 100 also includes a wiring harness plate 70, a wiring harness plate 70 Located on the module and extending along the first direction, the wiring harness board 70 is provided with a plurality of temperature detection points 701 . It can be understood that, by setting the wiring harness board 70 , the voltage and temperature of the battery cells 20 can be collected and collected.

In some embodiments, referring to FIG. 1 , a BMS 80 is provided on the housing 10. The BMS 80 is used to collect the voltage and temperature of the battery cells 20, monitor the state of charge of each battery cell 20, and input the results to the next level in the form of data to provide a basis for remote control.

The utility model is described below with reference to specific embodiments. It should be noted that these embodiments are only illustrative, and do not limit the utility model in any way.

Example

Referring to FIG. 1-FIG. 9, a specific embodiment of the battery 100 of the present invention is described.

The battery 100 includes: a casing 10 , a battery cell 20 , a main air duct 30 , an auxiliary air duct 50 , a sealing ring 40 , an exhaust fan 60 , a first end plate 201 , a second end plate 202 , a fixing belt 203 and a harness plate 70 .

There is an installation space inside the casing 10, and the casing 10 is provided with an opening and a plurality of heat dissipation air inlets; there are twelve batteries 20, and they are arranged in the installation space in sequence along the front and rear directions; the main air duct 30 is arranged in the installation space And extend along the front-to-back direction, one end of the main air duct 30 is arranged in the opening and is provided with a main air outlet 301, the side end of the main air duct 30 near the electric core 20 is provided with a main air inlet 302, the main air duct 30 and the electric core A sealing ring 40 is provided between the 20, and the main air inlet 302 is located in the area surrounded by the sealing ring 40; an auxiliary air duct 50 is provided between any two adjacent battery cells 20, and each auxiliary air duct 50 has an auxiliary air inlet The air outlet 5011 and the auxiliary air outlet, the auxiliary air outlet corresponds to the main air inlet 302, and the auxiliary air inlet 5011 corresponds to the heat dissipation air inlet; the exhaust fan 60 is arranged in the main air outlet 301. The first end plate 201 stops against the battery cell 20 at the front end; the second end plate 202 stops against the battery cell 20 at the rear end; the fixing belt 203 is sleeved on the first end plate 201, the second end plate 202 and the battery cell 20 on. The first end plate 201, the second end plate 202, the fixing belt 203, the auxiliary air duct 50 and twelve electric cores 20 form a module. There are two modules, and the two modules are located on the left and right sides of the main air duct 30. sides. The opening and the main air outlet 301 are located at the front end of the casing 10 . The wire harness board 70 is arranged on the module and extends along the left and right directions, and fourteen temperature detection points 701 are arranged on the wire harness board 70 .

The main air inlet 302 includes a first air inlet 3021, a second air inlet 3022 and a third air inlet 3023, the first air inlet 3021 is close to the main air outlet 301; the second air inlet 3022 is far away from the main air outlet 301; the third air inlet 3023 Located between the first air inlet 3021 and the second air inlet 3022 , the height of the third air inlet 3023 is smaller than the height of the first air inlet 3021 and the second air inlet 3022 . The height of the third air inlet 3023 gradually decreases toward the main air outlet 301 .

The auxiliary air duct 50 includes a heat-conducting metal body 501 and an insulating film 502 , and the insulating film 502 is coated on the heat-conducting metal body 501 . Six air cavities are formed inside the auxiliary air duct 50 . The air cavities extend along the left and right directions of the auxiliary air duct 50 . One end of each air cavity is connected to the auxiliary air inlet 5011 , and the other end is connected to the auxiliary air outlet. Each cooling air inlet includes six sub-air inlets 101, and the number of sub-air inlets 101 and the air chambers are equal and one-to-one correspondence.

The initial charge and discharge energy test was carried out on the battery obtained in the above examples at 25±2°C, and the test was carried out according to the following steps:

(1) Hold for 10s;

(2) Discharge at constant power to Vmin≤2.8V;

(3) Set aside for 10 minutes;

(4) Charge with constant power to Vmax≥3.55V;

(5) Set aside for 10 minutes;

(6) Discharge with constant power to Vmin≤2.8V;

(7) Set aside for 10 minutes;

(8) Circulate steps (4) to (7) 2 times in total;

(9) Set aside for 10 minutes;

(10) END.

During the charging and discharging test, temperature monitoring is performed on 14 temperature detection points. The positions of the temperature detection points are shown in Figure 9, and the temperature change curves of the temperature detection points are shown in Figure 10.

It can be seen from the test results that the overall temperature of the 14 temperature detection points is 32-37°C, and the temperature during charging and discharging is mainly concentrated at 33-36°C. In this temperature range, the charging and discharging efficiency of the battery is relatively high. Figure 11 shows that the temperature difference between the temperature detection points at the same time is not more than 3°C. This result shows that the application can effectively equalize the internal temperature of the casing, especially when the casing is in the final charging and shelving conditions, the maximum temperature difference is only 1 ℃ to 2℃, and the discharge temperature difference, that is, the maximum temperature difference when the battery is working, is only 3℃, which shows that the solution has a good effect on the temperature control of the battery core in the shell.

In the description of this specification, descriptions with reference to the terms "some embodiments", "optionally", "further" or "some examples" mean that specific features, structures, materials or Features are included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A battery, comprising:

the shell (10) is internally provided with an installation space, and the shell (10) is provided with an opening and a plurality of heat dissipation air inlets;

the battery cells (20) are arranged in the installation space in sequence along the first direction, and the battery cells (20) are a plurality of;

the main air pipe (30) is arranged in the installation space and extends along the first direction, one end of the main air pipe (30) is arranged in the opening and provided with a main air outlet (301), a main air inlet (302) is formed in the side end, close to the battery cell (20), of the main air pipe (30), a sealing ring (40) is arranged between the main air pipe (30) and the battery cell (20), and the main air inlet (302) is located in an area surrounded by the sealing ring (40);

an auxiliary air pipe (50) is arranged between any two adjacent battery cells (20), the auxiliary air pipe (50) is provided with an auxiliary air inlet (5011) and an auxiliary air outlet, the auxiliary air outlet corresponds to the main air inlet (302), and the auxiliary air inlet (5011) corresponds to the heat dissipation air inlet;

and the exhaust fan (60) is arranged in the main air outlet (301).

2. The battery according to claim 1, wherein the opening and the main air outlet (301) are located at one end of the first direction.

3. The battery according to claim 2, wherein the main intake (302) comprises:

-a first air inlet (3021), the first air inlet (3021) being close to the main air outlet (301);

-a second air inlet (3022), the second air inlet (3022) being remote from the main air outlet (301);

the third air inlet (3023), the third air inlet (3023) is arranged between the first air inlet (3021) and the second air inlet (3022), and the height of the third air inlet (3023) is smaller than the height of the first air inlet (3021) and the height of the second air inlet (3022).

4. A battery according to claim 3, characterized in that the height of the third air inlet (3023) decreases gradually towards the main air outlet (301).

5. The battery according to claim 1, characterized in that the auxiliary air duct (50) comprises a heat conducting metal body (501) and an insulating film (502), the insulating film (502) being coated on the heat conducting metal body (501).

6. The battery according to claim 1, wherein a plurality of air cavities are formed in the auxiliary air duct (50), the air cavities extend along the length direction of the auxiliary air duct (50), one end of each air cavity is communicated with the auxiliary air inlet (5011), and the other end is communicated with the auxiliary air outlet.

7. The battery according to claim 6, wherein each of the heat dissipation air inlets includes a plurality of sub air inlets (101), and the number of sub air inlets (101) and the number of air chambers are equal and correspond to each other one by one.

8. The battery of claim 1, further comprising:

a first end plate (201), the first end plate (201) abutting against the battery cell (20) at one end of the first direction;

a second end plate (202), the second end plate (202) abutting against the battery cell (20) at the other end of the first direction;

the fixing belt (203) is sleeved on the first end plate (201), the second end plate (202) and the battery cell (20).

9. The battery according to claim 8, wherein the first end plate (201), the second end plate (202), the fixing band (203), the auxiliary air duct (50) and the plurality of electric cells (20) constitute two modules, and the two modules are provided on both sides of the main air duct (30) in the first direction.

10. The battery according to claim 8, wherein the first end plate (201), the second end plate (202), the fixing band (203), the auxiliary air duct (50) and the plurality of electric cells (20) form a module, the battery further comprises a wire harness plate (70), the wire harness plate (70) is arranged on the module and extends along the first direction, and a plurality of temperature detection points (701) are arranged on the wire harness plate (70).

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