CN117388696A - A thermostat simulation model, thermostat and thermostat room - Google Patents

Abstract

The invention relates to the technical field of battery testing devices, in particular to an incubator simulation model, an incubator and a constant temperature room. The invention relates to an incubator simulation model, which comprises a simulation box body, a simulation baffle plate and a simulation baffle plate; the simulation flow baffle is respectively stuck to the top plate and the bottom plate, the small side surface at the rear part is stuck to the side wall where the air inlet is positioned, and the side wall where the air inlet is positioned; the simulation flow deflector is connected with the simulation flow baffle, and an obtuse included angle is formed between the simulation flow deflector and the simulation flow baffle. According to the invention, the air flow can be guided by arranging the flow baffle and the flow guide plate, so that the flow field in the box body is uniform, the difference of the cell temperatures at different positions in the incubator can be reduced, the testing precision and the testing efficiency can be improved, the space of the incubator can be saved, and the number of the tested cells can be increased.

Description

A constant temperature box simulation model, a constant temperature box and a constant temperature room

Technical field

The invention relates to the technical field of battery testing devices, and in particular to a thermostat simulation model, a thermostat and a thermostat room.

Background technique

With the policies of energy conservation and emission reduction, the development prospects of the battery industry are very good. Whether it is the current electric vehicle or energy storage field, batteries are its key equipment.

Temperature is the key to battery life. In different environments, batteries work at different temperatures. However, our country has a wide geographical area, and some cities have large temperature changes throughout the seasons. Batteries will inevitably have harsh working environments when working, so different batteries need to be inspected. The working status of the battery is tested under ambient temperature to optimize and improve the battery. The process of experimental testing requires the use of a thermostat.

In order to ensure uniform wind speed in the thermostat and to make the temperature at different locations in the thermostat uniform, it is usually necessary to first establish a thermostat simulation model, and then simulate and optimize the flow channel of the thermostat simulation model.

When optimizing the thermostat simulation model in the prior art, it is often limited to optimizing and simulating the entire thermostat model. As a result, the wind speed in the thermostat is difficult to meet the requirements, and the battery testing effect is poor.

Contents of the invention

The object of the present invention is to provide a thermostat simulation model, a thermostat and a thermostat room to solve the problem in the prior art that it is difficult to ensure uniform wind speed in the thermostat.

In order to solve the above technical problems, the present invention provides a thermostat simulation model, which includes a simulation box, a simulation baffle and a simulation guide plate;

The simulation box includes a top plate, a bottom plate and a plurality of side walls, at least one of which is provided with an air inlet;

There is an acute angle between the simulated baffle and the side wall where the air inlet is located, and the simulated baffle is close to the top plate and the bottom plate respectively, and close to the side wall where the air inlet is located. the side wall;

The simulated air guide plate is connected to the simulated air baffle plate, and there is an obtuse angle between the simulated air guide plate and the simulated air baffle plate.

Furthermore, a simulated supporting plate is provided, and a plurality of battery core placement positions are provided on the front side of the simulated supporting plate away from the air inlet.

Further, a plurality of battery core placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the simulated supporting plate is sequentially reduced.

Further, there are multiple simulated pallets, and the plurality of simulated pallets are arranged in the simulation box at intervals along the up and down direction.

Further, the simulated pallet is provided with an avoidance gap for avoiding the simulated deflector and the simulated baffle.

Further, the included angle between the simulated baffle and the side wall where the air inlet is located ranges from 30° to 70°.

The invention also provides a thermostatic box, which includes a box body, a baffle and a deflector;

The box includes a top plate, a bottom plate and a plurality of side walls, at least one of which is provided with an air inlet;

There is an acute angle between the baffle and the side wall where the air inlet is located, and the baffle is close to the top plate and the bottom plate respectively, and close to the part where the air inlet is located. Said side wall;

The flow guide plate is connected to the flow baffle plate, and there is an obtuse angle between the flow guide plate and the flow baffle plate.

Furthermore, a supporting plate is provided, and a front side portion of the supporting plate away from the air inlet is provided with a plurality of battery core placement positions.

Further, a plurality of battery core placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the supporting plate is sequentially reduced.

Further, there are multiple supporting plates, and the plurality of supporting plates are arranged in the box at intervals along the up and down direction.

Further, the supporting plate is provided with an escape notch to avoid the deflector and the baffle.

Further, the included angle between the baffle and the side wall where the air inlet is located ranges from 30° to 70°.

The invention also provides a constant temperature room, which includes a main body of the house, a baffle and a deflector;

The main body of the house includes a roof, a bottom and a plurality of side walls, at least one of which is provided with an air inlet;

There is an acute angle between the baffle and the side wall where the air inlet is located, and the baffle is close to the top plate and the bottom plate respectively, and close to the part where the air inlet is located. Said side wall;

The flow guide plate is connected to the flow baffle plate, and there is an obtuse angle between the flow guide plate and the flow baffle plate.

Furthermore, a supporting plate is provided, and a front side portion of the supporting plate away from the air inlet is provided with a plurality of battery core placement positions.

Further, a plurality of battery core placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the supporting plate is sequentially reduced.

Further, there are a plurality of supporting plates, and the plurality of supporting plates are arranged in the main body of the house at intervals along the up and down direction.

Further, the supporting plate is provided with an escape notch to avoid the deflector and the baffle.

Further, the included angle between the baffle and the side wall where the air inlet is located ranges from 30° to 70°.

Compared with the prior art, the present invention at least has the following beneficial effects:

By arranging baffles and deflectors, the present invention can guide the air flow, thereby making the flow field inside the box more uniform, narrowing the temperature gap of the battery cores at different positions in the thermostatic box, and improving test accuracy and efficiency. In addition, since the baffle and deflector only need to be arranged at the air inlet, they occupy less space, thus saving space in the thermostat box and increasing the number of test cells, thereby further improving test efficiency.

Description of the drawings

Figure 1 is a schematic structural diagram of the initial simulation model of the constant temperature box simulation model of the present invention;

Figure 2 is a velocity cloud diagram of Scheme 1 of the initial simulation model of the constant temperature box simulation model of the present invention;

Figure 3 is a velocity cloud diagram of Scheme 2 of the initial simulation model of the constant temperature box simulation model of the present invention;

Figure 4 is a velocity cloud diagram of Scheme 3 of the initial simulation model of the constant temperature box simulation model of the present invention;

Figure 5 is a schematic structural diagram of the thermostat simulation model of the present invention;

Figure 6 is a schematic structural diagram of the simulation baffle and simulation guide plate of the thermostat simulation model in Figure 5;

Figure 7 is a speed cloud diagram of Scheme 4, Scheme 5 and Scheme 6 of the thermostatic box simulation model of the present invention;

Figure 8 is a speed cloud diagram of Scheme 7 of the thermostat simulation model of the present invention;

Figure 9 is a speed cloud diagram of Scheme 8 of the thermostatic box simulation model of the present invention;

Figure 10 is a velocity cloud diagram of the front wall surface of the battery core in the ninth solution of the thermostatic box simulation model of the present invention;

Figure 11 is a velocity cloud diagram of the rear wall surface of the battery core in the ninth solution of the thermostatic box simulation model of the present invention;

Figure 12 is a schematic structural diagram of the supporting plate of the thermostat simulation model in Figure 5;

Reference signs:

100. Simulation box; 110. Air inlet; 120. Air outlet; 200. Simulation baffle; 300. Simulation deflector; 400. Simulation support plate; 410. Plate hole; 420. Avoidance gap; 430. Battery core Placement position; 600, simulated battery core wiring box.

Detailed ways

A thermostat simulation model, a thermostat and a thermostat room of the present invention will be described below in conjunction with schematic diagrams, which represent preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the invention described here and still realize Advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and is not intended to limit the present invention.

The serial numbers assigned to components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connection" and "connection" mentioned in this application include direct and indirect connections (connections) unless otherwise specified. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientations or positional relationships indicated by "bottom", "inner", "outside", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. , rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

The invention is described in more detail by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and use imprecise proportions, and are only used to conveniently and clearly assist in explaining the embodiments of the present invention.

The inventor's research found that when optimizing the flow path of the conventional thermostatic box simulation model, it is limited to optimizing the simulation of the entire thermostatic box, and rarely considers the impact of internal factors such as the placement of the support plate and the battery core on the flow field. , resulting in uneven air flow speed in the thermostat. When performing battery testing, the battery temperatures at different locations in the thermostat are inconsistent, the test accuracy is not high, and the test efficiency is low.

In order to improve battery testing accuracy and testing efficiency, the inventor started from the actual situation, fully considered the impact of the items inside the thermostatic box on the flow field inside the box, and optimized the thermostatic box simulation model.

In order to obtain the required simulation model of the thermostat, as shown in Figure 1, an initial simulation model is first established using three-dimensional modeling software. The initial simulation model is arranged with two layers of battery cells, each layer has three battery cells, starting from close to the air outlet. Starting from the direction of 120, they are named the first row of cells, the second row of cells and the third row of cells;

Then conduct a ventilation physical test on the physical thermostat box, and the wind speed tester conducts speed sampling and summary at key locations such as the air inlet 110 and the air outlet 120;

Then extract the flow field distribution in the physical thermostatic box, pay attention to the gas flow rate, and conduct simulation and measurement comparisons;

Then the initial simulation model is optimized until the initial simulation model is consistent with the physical thermostat box.

In order to optimize the initial simulation model, the inventor started from two aspects. First, he directly placed the battery core on the pallet in the simulation box 100 to determine the flow field distribution on the positive and negative surfaces of the battery core; second, , optimize the flow field in the simulation box 100, and then place the battery cells into the optimized flow field, so that the battery cells can obtain better and smooth distribution.

Specifically, the initial simulation model was first analyzed for the flow field, and the conclusion was drawn: the uneven wind speed inside the thermostatic box resulted in uneven distribution of the flow field on the pallets of each layer, and the wind speed was smaller at the rear section of the pallet, so During subsequent simulation optimization, the battery core will be placed on the front part of the support plate.

Based on the above conclusion, the inventor made the following attempts: without changing the internal structure of the thermostatic box, simply changing the arrangement of the cells in each layer, setting up plan one and plan two, placing the cells in each layer at equal intervals in a staggered manner, where the plan One battery cell gradually approaches the front end of the pallet, and the resulting velocity contour (Velocity Contour) is shown in Figure 2, which corresponds to the wire frame. Figure 2 shows the first column of cells and the second column from top to bottom. The speed cloud diagram of the battery core and the third row of battery cells; the battery cells of the second row are gradually moved away from the front end of the pallet. The obtained speed cloud diagram is shown in Figure 3, which corresponds to the wire frame. Figure 3 shows it from top to bottom. The speed cloud diagram of the first row of cells, the second row of cells and the third column of battery cells; the cells of the third column are placed horizontally and equally spaced in sequence, and the resulting speed cloud diagram is shown in Figure 4. By comparing each of the three schemes The speed cloud diagram of the large surface of the battery cell is used to select the best solution. If the solution satisfies the speed consistency of the large surface of each battery cell, then the optimization is successful. If it is inconsistent, further attempts are required.

After simulation, it was found that the velocity cloud diagrams presented in each group of each scheme are extremely uneven. Simply changing the arrangement position of the cells cannot change the inconsistent flow field on the surface of each cell. Therefore, further attempts are needed, as follows:

Change the internal structure of the thermostatic box, and do not place batteries inside the box, so as to evenly distribute the flow field at the battery drag plates on each layer inside the box. In order to achieve this goal, the inventor creatively provided a simulated baffle 200 and a simulated deflector 300 in the simulation box 100 . Specifically, as shown in Figures 5 and 6, the simulated baffle 200 and the simulated baffle 300 are connected so that an acute angle is formed between the simulated baffle 200 and part of the side wall of the simulated box 100 where the air inlet is located. , according to different angles, scheme four, scheme five and scheme six are respectively formed. Among the three schemes, the angles between the simulation baffle 200 and the side wall of the simulation box 100 are 40°, 50° and 60° respectively. , and then conduct further simulation analysis. Of course, you can also increase the number of plans and set different angles. From these options, find a better set of options.

Select three sections from each scheme, as shown in Figure 7. The first column is the velocity cloud diagram of the three sections of scheme 4, the second column is the velocity cloud diagram of the three sections of scheme 5, and the third column is the velocity cloud diagram of scheme 6. After comparison with the velocity cloud diagrams of the three sections, it was found that the flow field distribution in the box in Scheme 5 is relatively uniform.

On this basis, the cells in different arrangements in Schemes 1, 2 and 3 were placed in the better flow field of Scheme 5 for further simulation analysis. Based on the simulation results, the arrangement was continuously optimized. From the simulation From the results, three better technical solutions were selected for comparison, as Option 7, Option 8 and Option 9. Among them, the positions of the battery cells used to place the batteries in different schemes are different.

The simulation cloud diagram of Scheme 7 is shown in Figure 8. Among them, the three simulation diagrams in the first row show the velocity cloud diagram of the rear wall of the battery cell, and the three simulation diagrams in the second row show the velocity cloud diagram of the front wall surface of the battery cell. , corresponding to the wire frame, in Figure 8, the first column of simulation diagrams shows the speed cloud diagrams of the first and second rows of cells, and the second column of simulation diagrams shows the third cell of the first layer. The velocity cloud diagram of the core. The third column of simulation pictures shows the velocity cloud diagram of the third battery cell in the second layer. Table 1 below shows the average velocity sampling points of the front and rear walls of the battery cell in Scheme 7.

Table 1

The simulation cloud diagram of Scheme 8 is shown in Figure 9. Among them, the three simulation diagrams in the first row show the velocity cloud diagram of the rear wall of the battery cell, and the three simulation diagrams in the second row show the velocity cloud diagram of the front wall surface of the battery cell. , corresponding to the wire frame, in Figure 9, the first column of simulation diagrams shows the speed cloud diagrams of the first and second rows of cells, and the second column of simulation diagrams shows the third cell of the first layer. The velocity cloud diagram of the core. The third column of simulation pictures shows the velocity cloud diagram of the third battery cell in the second layer. Table 2 below shows the average velocity sampling points of the front and rear walls of the battery cell in Scheme 8.

Table 2

The simulation cloud diagrams of Scheme 9 are shown in Figures 10 and 11. Figure 10 shows the velocity cloud diagram of the front wall of the battery cell, and Figure 11 shows the velocity cloud diagram of the rear wall surface of the battery cell. Table 3 below shows the battery of Scheme 9. The average value of the wall velocity sampling points at the front and rear of the core.

table 3

By comparing Table 1, Table 2 and Table 3, it can be seen that the mean values of the sampling points on the front and rear walls of the battery cells in Scheme 9 are relatively uniform, and the flow field distribution is better, making the flow field distribution on the front and reverse surfaces of each battery cell relatively uniform.

Through the above method, a better embodiment of the constant temperature box simulation model of the present invention is obtained, and based on the constant temperature box simulation model, continuous optimization is performed, and finally the constant temperature box and constant temperature room of the present invention are formed.

The thermostat simulation model in the first embodiment of the present invention will be introduced in detail below with reference to the accompanying drawings of the description.

In one of the embodiments, as shown in Figures 5 and 6, the thermostatic box simulation model of this embodiment includes a simulation box 100, a simulation baffle 200 and a simulation baffle 300.

The simulation box 100 includes a top plate, a bottom plate and a plurality of side walls, at least one of which is provided with an air inlet 110 . In this embodiment, four side walls are provided, which are respectively named front side wall, rear side wall, left side wall and right side wall. The air inlet 110 is provided on the rear side wall. In order to adapt to different For the wind speed test, there are multiple air inlets 110, which can blow winds of different wind speeds into the simulation box 100, such as 2.47m/s, 4.62m/s, 9.09m/s, 4.50m/s, 7.16m /s. In other embodiments, different numbers of side walls can also be provided according to requirements, such as three or five. An air outlet 120 is also provided on the rear side wall. In other embodiments, the air outlet 120 can also be provided on other side walls.

There is an acute angle between the simulated baffle 200 and the side wall where the air inlet 110 is located. The simulated baffle 200 is a rectangular parallelepiped plate, extending in the up and down direction, with two large surfaces and Four small sides, the four small sides are respectively an upper small side, a lower small side, a front small side and a rear small side. The upper small side and the lower small side are respectively close to the top plate and the bottom plate. , the small side of the rear part is close to the side wall where the air inlet 110 is located, so that there is no gap between the baffle and the side wall where the air inlet 110 is located, and gas cannot easily enter and will not affect the simulation box. Flow field within 100.

The simulated baffle 300 is connected to the front small side of the simulated baffle 200, and there is an obtuse angle between the simulated baffle 300 and the simulated baffle 200, so that gas can be guided. , the connection method between the two can be a fixed connection, for example, a fixed connection through welding or gluing, or a rotatable connection through a hinge.

The thermostatic box simulation model of this embodiment can guide the air flow by arranging the simulation baffle 200 and the simulation guide plate 300, so that the internal flow field of the simulation box 100 is relatively uniform, and the flow field at different positions in the thermostatic box can be reduced. The difference in cell temperature improves test accuracy and efficiency. In addition, since the simulated baffle 200 and the simulated guide plate 300 only need to be arranged at the air inlet 110, they occupy less space. Therefore, the space of the thermostat can be saved, and the number of test cells can be increased, thereby further improving the test. efficiency.

In order to test the battery cores, a simulated battery core wiring box 600 is also provided in the simulation box 100, and the simulated battery core wiring box 600 extends along the arrangement direction of the battery cells.

In one embodiment, as shown in FIGS. 5 and 12 , the thermostat simulation model also includes a simulation support plate 400 , and a plurality of battery cores are arranged on the front side of the simulation support plate 400 away from the air inlet. Bit 430. The simulated supporting plate 400 can be provided to support the battery core, thereby facilitating the placement of the battery core. Since the wind speed in the rear part of the simulated pallet 400 is small, arranging the battery core placement position 430 in the front part of the simulated pallet 400 can make the battery cores more likely to be blown by the wind, thereby making it easier to measure the battery core temperature. adjust.

Preferably, a plurality of the battery core placement positions 430 are sequentially arranged in a direction away from the air inlet 110 , and the distance from the front end of the simulated supporting plate 400 is sequentially reduced.

It should be noted that the position of the battery core placement position 430 on the simulation pallet 400 in Figure 12 is only an exemplary illustration, and does not mean that the battery core placement position 430 can only be set at the specific position shown in Figure 12. In practical applications, the position of the battery cell placement position 430 on the simulation pallet 400 can be flexibly adjusted according to actual working conditions and specific needs.

Specifically, as shown in FIG. 5 , the air inlet 110 of this embodiment is disposed on the left side of the rear side wall, and a plurality of battery cell placement positions 430 are arranged in sequence from left to right, and in the front and rear direction. The distance from the front end of the pallet gradually decreases. When the battery core is arranged at the corresponding battery cell placement position 430, the distance between the battery core and the front end of the supporting plate in the front-to-back direction also gradually decreases. After simulation analysis, it can be found that the front and rear faces of each battery core The speed consistency is better.

In one embodiment, as shown in FIGS. 5 and 12 , in order to arrange a larger number of electric cores, there are multiple simulated pallets 400 , and the multiple simulated pallets 400 are arranged at intervals along the up and down direction. In the simulation box 100, multiple batteries can be arranged on each simulation pallet 400, and the simulation pallets 400 are provided with plate holes 410 that can allow air flow to pass through. Of course, when the height of the simulation box 100 is small, only one simulation pallet 400 can be provided.

In one embodiment, the simulated baffle 300 is an integrated structure, and the simulated baffle 200 is also an integrated structure. In order to install the simulated baffle 300 and the simulated baffle 200, the simulated supporting plate 400 is provided with There is an avoidance gap 420 for avoiding the simulated air deflector 300 and the simulated air baffle 200 . In other embodiments, the simulated baffle 300 and the simulated baffle 200 are segmented structures, that is, a section of the simulated baffle 300 and the simulated windproof board are arranged on each layer of the simulated pallet 400. In this case, no installation is required. Avoid gap 420.

In one embodiment, preferably, the included angle between the simulated baffle 200 and the side wall where the air inlet 110 is located ranges from 30° to 70°. According to the simulation results, it can be seen that when the angle range between the simulated baffle 200 and the side wall where the air inlet 110 is located is 30° to 70°, such as 40°, 50° or 60°, the simulation box The flow field within the body 100 has good uniformity.

In addition, through further optimization, one of the better embodiments obtained is: the angle between the simulated baffle 200 and the rear side wall is 50°, and the angle between the simulated baffle 300 and the simulated baffle 200 is 50°. The angle is 120°, the length of the simulation box 100 is 100cm, the width is 60cm, and the height is 100cm. The width of the simulation baffle 200 is 13cm, the width of the simulation baffle 300 is 11.5cm, and the simulation baffle 200 The height of the simulated guide plate 300 is 100cm, the length of the battery wiring box is 100cm, the width and height are both 9cm, and there are three battery placement positions 430 on each layer of supporting plates, from left to right. layout, and the distances from the front end of the simulation pallet 400 are 22cm, 12cm, and 11cm in sequence.

The thermostatic box in the embodiment of the second aspect of the present invention is introduced below.

The thermostat in the embodiment of this aspect is manufactured according to the thermostat simulation model of the first embodiment, and its structure is the same as the thermostat simulation model of the first embodiment.

In one of the embodiments, the thermostatic box of this embodiment includes a box body, a baffle and a baffle.

The box includes a top plate, a bottom plate and a plurality of side walls, one of which is provided with an air inlet. In this embodiment, four side walls are provided, named front side wall, rear side wall, left side wall and right side wall respectively. The air inlet is provided on the rear side wall in order to adapt to different wind speeds. In the test, there are multiple air inlets, which can blow wind at different wind speeds into the simulation box, such as 2.47m/s, 4.62m/s, 9.09m/s, 4.50m/s, 7.16m/s. In other embodiments, different numbers of side walls can also be provided according to requirements, such as three or five. An air outlet is also provided on the rear side wall. In other embodiments, the air outlet can also be provided on other side walls.

There is an acute angle between the baffle and the side wall where the air inlet is located. The baffle is a rectangular parallelepiped-shaped plate, extending in the up and down direction, with two large faces and four small sides. The four small sides are respectively an upper small side, a lower small side, a front small side and a rear small side. The upper small side and the lower small side are respectively close to the top plate and the bottom plate. The rear part The small side is close to the side wall where the air inlet is located, so that there is no gap between the baffle and the side wall where the air inlet is located, so that gas cannot easily enter and will not affect the flow field in the box.

The flow guide plate is connected to the front small side of the flow baffle plate, and there is an obtuse angle between the flow guide plate and the flow baffle plate, so that the gas can be guided. The connection method of the two can be: The fixed connection may be, for example, by welding or gluing, or it may be rotatably connected by a hinge.

The thermostatic box of this embodiment can guide the air flow by providing baffles and deflectors, thereby making the flow field inside the box more uniform, narrowing the gap in battery core temperatures at different locations in the thermostatic box, and improving test performance. accuracy and testing efficiency. In addition, since the baffle and deflector only need to be arranged at the air inlet, they occupy less space, thus saving space in the thermostat box and increasing the number of test cells, thereby further improving test efficiency.

In order to be able to test the battery cores, a battery core wiring box is also provided in the box, and the battery core wiring box extends along the arrangement direction of the battery cores.

In one embodiment, the thermostatic box further includes a support plate, and a front side portion of the support plate away from the air inlet is provided with a plurality of battery placement positions. A supporting plate can be provided to support the battery core, making it easier to place the battery core. Since the wind speed at the rear part of the pallet is small, arranging the battery placement position on the front part of the pallet can make the battery cores more likely to be blown by the wind, making it easier to adjust the temperature of the battery cores.

Preferably, a plurality of battery core placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the supporting plate is sequentially reduced.

Specifically, the air inlet of this embodiment is arranged on the left side of the rear side wall, and the plurality of battery core placement positions are arranged in sequence from left to right, and the distance from the front end of the supporting plate in the front and rear direction is in order decrease. When the battery cores are arranged at the corresponding battery placement positions, the distance between the battery cores and the front end of the support plate in the front-to-back direction also gradually decreases. After simulation analysis, it can be found that the speed of the front and rear surfaces of each battery core The consistency is better.

In one of the embodiments, in order to arrange a larger number of electric cores, there are multiple pallets, and the plurality of pallets are arranged in the box at intervals along the up and down direction, and each pallet can be arranged There are multiple cells, and the supporting plate is provided with plate holes for air flow to pass through. Of course, when the height of the box is small, only one supporting plate can be provided.

In one embodiment, the flow guide plate is an integrated structure, and the flow baffle is also an integrated structure. In order to install the flow guide plate and the flow baffle, the supporting plate is provided with a guide plate to avoid the flow guide plate and the flow baffle. Avoidance gaps in the deflector. In other embodiments, both the deflector and the baffle have a segmented structure, that is, a section of the deflector and the windproof board are arranged on each layer of pallets. In this case, there is no need to set an avoidance gap.

In one embodiment, preferably, the angle between the baffle and the side wall where the air inlet is located ranges from 30° to 70°. According to the simulation results, it can be seen that when the angle between the simulated baffle and the side wall where the air inlet is located is from 30° to 70°, such as 40°, 50° or 60°, the simulation box 100 The flow field inside is more uniform.

In addition, through further optimization, one of the better embodiments obtained is: the angle between the baffle and the rear side wall is 50°, the angle between the baffle and the baffle is 120°, and the box The length of the body is 100cm, the width is 60cm, the height is 100cm, the width of the baffle is 13cm, the width of the baffle is 11.5cm, the height of the baffle and baffle is 100cm, the battery wiring box The length dimension is 100cm, the width dimension and height dimension are both 9cm. There are three battery placement positions on each pallet, which are arranged from left to right, and the distances from the front end of the simulated pallet are 22cm, 12cm, and 11cm.

The constant temperature room in the third embodiment of the present invention is introduced below.

The constant temperature room in the embodiment of this aspect is manufactured based on the simulation model of the constant temperature box in the embodiment of the first aspect.

In one of the embodiments, the constant-temperature room of this embodiment includes a main body of the house, a baffle and a deflector.

The main body of the house includes a roof, a bottom and a plurality of side walls, one of which is provided with an air inlet. In this embodiment, four side walls are provided, respectively named front side wall, rear side wall, left side wall and right side wall, wherein the air inlet is provided on the rear side wall. In other embodiments, different numbers of side walls can also be provided according to requirements, such as three or five. An air outlet is also provided on the rear side wall. In other embodiments, the air outlet can also be provided on other side walls.

Due to the large size of the constant temperature room, in order to facilitate the placement of products to be tested in the main body of the house, there are also doors that can be opened and closed on the side walls. Through the doors, testers can enter the main body of the house. The constant temperature room in this embodiment and the constant temperature box in the above-mentioned second embodiment can not only test battery cells, but can also be used for other products that are sensitive to temperature. Of course, since the constant temperature room is large in size, the constant temperature room in this embodiment can also test products of larger volume.

There is an acute angle between the baffle and the side wall where the air inlet is located. The baffle is a rectangular parallelepiped-shaped plate, extending in the up and down direction, with two large faces and four small sides. The four small sides are respectively an upper small side, a lower small side, a front small side and a rear small side. The upper small side and the lower small side are respectively close to the top plate and the bottom plate. The rear part The small side is close to the side wall where the air inlet is located, so that there is no gap between the baffle and the side wall where the air inlet is located, so that gas cannot easily enter and will not affect the flow field in the main body of the house.

The flow guide plate is connected to the front small side of the flow baffle plate, and there is an obtuse angle between the flow guide plate and the flow baffle plate, so that the gas can be guided. The connection method of the two can be: The fixed connection may be, for example, by welding or gluing, or it may be rotatably connected by a hinge.

The constant-temperature room of this embodiment can guide the airflow by setting baffles and deflectors, thereby making the flow field inside the box more uniform, narrowing the gap in battery core temperatures at different locations in the constant-temperature room, and improving test efficiency. accuracy and testing efficiency. In addition, since only the baffle and deflector need to be arranged at the air inlet, they occupy less space, thus saving space in the constant-temperature room and increasing the number of test cells, thereby further improving test efficiency.

In order to be able to test the battery cores, a battery core wiring box is also provided in the main body of the house, and the battery core wiring box extends along the arrangement direction of the battery cores.

In one embodiment, the constant temperature room further includes a support plate, and a plurality of battery core placement positions are provided on the front side of the support plate away from the air inlet. A supporting plate can be provided to support the battery core, making it easier to place the battery core. Since the wind speed at the rear part of the pallet is small, arranging the battery placement position on the front part of the pallet can make the battery cores more likely to be blown by the wind, making it easier to adjust the temperature of the battery cores.

Preferably, a plurality of battery core placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the supporting plate is sequentially reduced.

Specifically, as shown in Figures 1 and 5, the air inlet of this embodiment is arranged on the left side of the rear side wall, and a plurality of battery core placement positions are arranged in sequence from left to right, and in the front and rear direction. The distance between the top and the front end of the pallet gradually decreases. When the battery cores are arranged at the corresponding battery placement positions, the distance between the battery cores and the front end of the support plate in the front-to-back direction also gradually decreases. After simulation analysis, it can be found that the speed of the front and rear surfaces of each battery core The consistency is better.

In one embodiment, in order to arrange a larger number of electric cores, there are multiple pallets, and the plurality of pallets are arranged in the main body of the house at intervals along the up and down direction, and each pallet can Multiple cells are arranged, and the supporting plate is provided with plate holes for air flow to pass through. Of course, when the height of the main body of the house is small, only one supporting plate can be provided.

In one embodiment, the flow guide plate is an integrated structure, and the flow baffle is also an integrated structure. In order to install the flow guide plate and the flow baffle, the supporting plate is provided with a guide plate to avoid the flow guide plate and the flow baffle. Avoidance gaps in the deflector. In other embodiments, both the deflector and the baffle have a segmented structure, that is, a section of the deflector and the windproof board are arranged on each layer of pallets. In this case, there is no need to set an avoidance gap.

In one embodiment, preferably, the angle between the baffle and the side wall where the air inlet is located ranges from 30° to 70°. When the angle between the baffle and the side wall where the air inlet is located is 30° to 70°, such as 40°, 50° or 60°, the flow field in the main body of the house will be more uniform. . Through further optimization, according to the simulation results, in a preferred embodiment, the angle between the baffle and the rear side wall is 50°, so that the angle between the baffle and the baffle is 120°.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims (18)

1. A thermostat simulation model, which is characterized in that it includes a simulation box, a simulation baffle and a simulation guide plate; The simulation box includes a top plate, a bottom plate and a plurality of side walls, at least one of which is provided with an air inlet; There is an acute angle between the simulated baffle and the side wall where the air inlet is located, and the simulated baffle is close to the top plate and the bottom plate respectively, and close to the side wall where the air inlet is located. The side wall of; The simulated air guide plate is connected to the simulated air baffle plate, and there is an obtuse angle between the simulated air guide plate and the simulated air baffle plate. 2. The thermostat simulation model according to claim 1, further comprising a simulation support plate, the front side portion of the simulation support plate away from the air inlet is provided with a plurality of battery core placement positions. 3. The thermostatic box simulation model according to claim 2, characterized in that a plurality of battery core placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the simulation support plate decreases in sequence. Small. 4. The constant temperature box simulation model according to claim 2, characterized in that there are multiple simulation pallets, and the plurality of simulation pallets are arranged in the simulation box at intervals along the up and down direction. 5. The thermostat simulation model according to claim 4, characterized in that the simulation support plate is provided with an avoidance gap for avoiding the simulation guide plate and the simulation baffle plate. 6. The thermostat simulation model according to any one of claims 1 to 5, characterized in that the angle range between the simulation baffle and the side wall where the air inlet is located is 30°. to 70°. 7. A thermostatic box, characterized in that it includes a box body, a baffle and a deflector; The box includes a top plate, a bottom plate and a plurality of side walls, at least one of which is provided with an air inlet; There is an acute angle between the baffle and the side wall where the air inlet is located, and the baffle is close to the top plate and the bottom plate respectively, and close to the part where the air inlet is located. Said side wall; The flow guide plate is connected to the flow baffle plate, and there is an obtuse angle between the flow guide plate and the flow baffle plate. 8. The thermostatic box according to claim 7, further comprising a support plate, the front portion of the support plate away from the air inlet is provided with a plurality of battery cell placement positions. 9. The thermostatic box according to claim 8, wherein a plurality of battery core placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the supporting plate decreases in sequence. 10. The thermostatic box according to claim 8, characterized in that there are multiple supporting plates, and the plurality of supporting plates are arranged in the box at intervals along the up and down direction. 11. The thermostatic box according to claim 10, wherein the supporting plate is provided with an avoidance gap for avoiding the flow guide plate and the flow baffle. 12. The thermostatic box according to any one of claims 7 to 11, characterized in that the included angle between the baffle and the side wall where the air inlet is located ranges from 30° to 70°. . 13. A constant temperature room, characterized in that it includes a main body of the house, a baffle and a deflector; The main body of the house includes a roof, a bottom and a plurality of side walls, at least one of which is provided with an air inlet; There is an acute angle between the baffle and the side wall where the air inlet is located, and the baffle is close to the top plate and the bottom plate respectively, and close to the part where the air inlet is located. Said side wall; The flow guide plate is connected to the flow baffle plate, and there is an obtuse angle between the flow guide plate and the flow baffle plate. 14. The constant temperature room according to claim 13, further comprising a support plate, the front portion of the support plate away from the air inlet is provided with a plurality of battery cell placement positions. 15. The constant-temperature room according to claim 14, wherein a plurality of battery cell placement positions are arranged sequentially in a direction away from the air inlet, and the distance from the front end of the supporting plate decreases in sequence. 16. The constant-temperature room according to claim 14, characterized in that there are multiple supporting plates, and the plurality of supporting plates are arranged in the main body of the house at intervals along the up and down direction. 17. The constant-temperature room according to claim 16, wherein the supporting plate is provided with an avoidance gap for avoiding the flow guide plate and the flow baffle. 18. The constant temperature room according to any one of claims 13 to 17, characterized in that the included angle between the baffle and the side wall where the air inlet is located ranges from 30° to 70°. .