Capacity grading equipment

Abstract

The utility model relates to the technical field of battery capacity grading, and discloses capacity grading equipment, which comprises an equipment body, a heat exchange air duct, a plurality of fan groups and a heat exchanger, the side surface of the equipment body is provided with the heat exchange air duct, and the heat exchange air duct is provided with an air outlet and an air inlet positioned on the lower side of the air outlet; the plurality of fan groups are arranged in the equipment body and comprise a plurality of cooling fan groups and an air outlet group, cold air sent out by the air inlet faces the plurality of cooling fan groups, the plurality of cooling fan groups are used for guiding the cold air to the plurality of batteries, and the air outlet group is used for guiding hot air passing through the plurality of batteries to the air outlet; the two ends of the heat exchanger are connected with the water inlet pipe and the water outlet pipe respectively. According to the utility model, the batteries in the equipment body can be effectively cooled by using the plurality of cooling fan groups, and the temperature consistency of the plurality of batteries is ensured, so that the improvement of the accuracy of battery capacity measurement is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery capacity grading technical field, concretely relates to capacity grading equipment. BACKGROUND

[0002] The battery manufacturing process is complex, and there is a certain difference after multiple battery manufacturing is completed. In order to distinguish the difference battery, generally, capacity grading equipment is used to screen the battery, and the consistency and safety of the screened battery are ensured. Among them, capacity calibration is the main function of capacity grading equipment, that is, the capacity of the battery is measured, and then the battery is classified according to capacity. Its technical principle is that the power supply equipment with certain precision control standard is used to charge and discharge the battery, the control system records all current and voltage data in the battery charging time, and the current data and time in the capacity calibration stage are selected for calculation, that is, the capacity information of the battery is obtained.

[0003] Because temperature can easily affect the polarization inside the battery, it can affect the battery cutoff voltage or cutoff current, so temperature has a greater influence on the charge and discharge performance of the battery.

[0004] The existing capacity grading equipment generally uses a tray to load the battery for operation. With the increasing requirement of the industry on production capacity efficiency, the number of batteries loaded in the tray is increasing, however, with the increase of the number of batteries in a single tray, the volume of the capacity grading equipment storage position does not increase in proportion, resulting in uneven heat dissipation effect of each battery, and further causing great difference in the environmental temperature of the multiple batteries in different storage positions or the same storage position of the capacity grading equipment, and finally resulting in large deviation of the accuracy of battery capacity measurement. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a capacity grading equipment to solve the problem that the capacity grading equipment loads multiple batteries, the heat dissipation is uneven, the temperature difference between different batteries is large, and the accuracy of battery capacity measurement exists deviation.

[0006] The utility model provides a capacity grading equipment, which comprises:

[0007] The equipment body is provided with a heat exchange air duct on the side, the heat exchange air duct is provided with an air outlet and an air inlet located on the lower side of the air outlet, and a plurality of batteries are arranged in the equipment body.

[0008] A plurality of fan groups are arranged in the equipment body, comprising a plurality of heat dissipation fan groups and an air outlet group, the cold air sent by the air inlet is directed to the plurality of heat dissipation fan groups, the plurality of heat dissipation fan groups are arranged at the bottom of the equipment body, and are used for guiding the cold air to the plurality of batteries, and the air outlet group is arranged above the plurality of batteries, and is used for guiding the hot air passing through the plurality of batteries to the air outlet.

[0009] A heat exchanger is arranged in the heat exchange air duct, and is used for heat exchanging with the hot air and forming the cold air.

[0010] Beneficial effects: the utility model discloses a plurality of radiating fans group output cold air to the air inlet of heat exchange air duct, and the plurality of radiating fans group guides the cold air to the plurality of batteries, carries away the heat of the plurality of batteries and forms hot air, and the hot air is guided to the air outlet of heat exchange air duct through the air outlet group, and then the heat exchanger is used to heat exchange with the hot air to form the cold air and send to the air inlet again, forms the heat dissipation circulation, realizes the uniform heat dissipation of the plurality of batteries, ensures the temperature consistency between the plurality of batteries, has good heat dissipation effect, thereby benefit to improve the accuracy of battery capacity determination. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0012] Figure 1 It is a structure schematic view of a capacity grading equipment of the utility model embodiment.

[0013] Mark explanation:

[0014] 1, equipment body;2, heat exchange air duct;201, air outlet;202, air inlet;3, fan group;301, radiating fan group;3011, fan;302, air outlet group;303, air inlet group;4, battery;5, heat exchanger;6, water inlet pipe;7, water outlet pipe;8, charge and discharge module;9, flow regulating valve;10, capacity grading tray. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the following will combine the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment is described clearly and completely, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creating creative labor belong to the protection scope of the utility model.

[0016] The following will combine Figure 1 to describe the embodiment of the utility model.

[0017] According to the embodiment of the utility model, such as Figure 1As shown, a capacity distribution device is provided, mainly comprising: a device body 1, a heat exchange air duct 2, a plurality of fan groups 3 and a heat exchanger 5. The device body 1 is provided with the heat exchange air duct 2, the heat exchange air duct 2 is provided with an air outlet 201 and an air inlet 202 located below the air outlet 201, and the device body 1 is provided with a plurality of batteries 4. The plurality of fan groups 3 are arranged in the device body 1, including a plurality of heat dissipation fan groups 301 and an air outlet group 302, the cold air sent by the air inlet 202 is directed to the plurality of heat dissipation fan groups 301, the plurality of heat dissipation fan groups 301 are arranged at the bottom of the device body 1 and are used for guiding the cold air to the plurality of batteries 4, and the air outlet group 302 is arranged above the plurality of batteries 4 and is used for guiding the hot air passing through the plurality of batteries 4 to the air outlet 201. The heat exchanger 5 is arranged in the heat exchange air duct 2 and is used for heat exchange of the hot air and formation of the cold air, and the heat exchanger 5 is connected with the water inlet pipe 6 and the water outlet pipe 7 at two ends respectively.

[0018] Therefore, the capacity distribution device provided by the embodiment of the utility model forms a heat dissipation cycle, realizes uniform heat dissipation of the plurality of batteries 4, ensures temperature consistency between the plurality of batteries 4, has good heat dissipation effect, and thus is beneficial to improving the accuracy of battery capacity determination.

[0019] Specifically, the device body 1 is provided with a containing cavity, and the plurality of batteries 4 are arranged in the containing cavity. The heat exchange air duct 2 sends the cold air into the containing cavity through the air inlet 202 at the lower side, the cold air flows to the plurality of heat dissipation fan groups 301, and the heat exchange air duct 2 receives the hot air formed in the containing cavity through the air outlet 201 at the upper side. The plurality of batteries 4 are heat dissipated by the plurality of heat dissipation fan groups 301, and the fan 3011 in each heat dissipation fan group 301 has consistent wind speed and separately heat dissipates the batteries 4 in one region.

[0020] In addition, the water inlet pipe 6 is connected with the inlet end of the heat exchanger 5 and is used for inputting cold water. The water outlet pipe 7 is connected with the outlet end of the heat exchanger 5 and is used for outputting the hot water formed after the heat exchange of the heat exchanger 5 and the hot air.

[0021] Exemplarily, the water inlet pipe 6 inputs cooling water, the temperature of the cooling water is about 16-18℃, the cooling water exchanges heat with the hot air at the heat exchanger 5, and the hot water flows out from the water outlet pipe 7. The pipe diameter of the water inlet pipe 6 and the water outlet pipe 7 depends on the number of the batteries 4, the charging and discharging current specification, the internal resistance of the batteries 4 and the like, and the "heat absorption amount" of the cooling water in the water inlet pipe 6 and the water outlet pipe 7 needs to balance the "heat generation amount" of the batteries 4, so as to stabilize the temperature of the battery 4 environment.

[0022] Further, the water inlet pipe 6 and the water outlet pipe 7 can also be connected to other heat exchange devices and form a heat exchange cycle to improve the heat exchange capacity of the heat exchanger 5. An air inlet pipe can also be arranged at the air inlet 202, which is located at the lower end of the side of the device body 1 and can guide the cold air to the multiple heat dissipation fan groups 301 to uniformly deliver the cold air to the multiple heat dissipation fan groups 301. Similarly, a return air pipe can also be arranged at the air outlet 201, which is arranged at the upper end of the side of the device body 1 to deliver the hot air to the heat exchange air duct 2 for heat exchange.

[0023] In one embodiment, as shown in Figure 1 , the heat exchange air duct 2 is arranged at opposite sides of the device body 1, and the heat exchange air ducts 2 at both sides simultaneously deliver cold air into the device body 1 and recover hot air to further improve the heat dissipation effect of the multiple batteries 4.

[0024] In one embodiment, as shown in Figure 1 , the multiple fan groups 3 further include an air inlet group 303 arranged at the air inlet 202. The air inlet group 303 is arranged at the air inlet 202 to guide the cold air after heat exchange of the heat exchanger 5 to the multiple heat dissipation fan groups 301, and the air outlet group 302 is arranged at the upper end of the device body 1 to guide the hot air to the air outlet 201.

[0025] Specifically, the cold air at the air inlet 202 of the heat exchange air duct 2 flows to the multiple heat dissipation fan groups 301 under the guidance of the air inlet group 303, and under the guidance of the multiple heat dissipation fan groups 301, the cold air flows upward and carries away the heat generated by the multiple batteries 4 to reduce the temperature of the batteries 4, and then the hot air is gathered at the top of the accommodating cavity of the device body 1. The hot air flows to the air outlet 201 under the guidance of the air outlet group 302, and is input into the heat exchange air duct 2, and after heat exchange of the heat exchanger 5, the cold air is formed again to be input into the air inlet 202 and into the accommodating cavity, forming a heat dissipation cycle, and the flow direction of the air flow is shown by arrows in Figure 1 .

[0026] Further, in one embodiment, the multiple heat dissipation fan groups 301 are arranged at the bottom of the device body 1, and the installation height of the air inlet group 303 is higher than that of the multiple heat dissipation fan groups 301. The air inlet group 303 guides the cold air to enter the device body 1, and the cold air sinks and flows to the multiple heat dissipation fan groups 301 at the bottom to guide the cold air to flow to the batteries 4 to improve the heat dissipation effect of the batteries 4.

[0027] Since the cold air is heavier, the hot air is lighter, and the fans 3011 of the heat dissipation fan groups 301 are arranged in a row at the bottom of the equipment body 1, the cold air at the air inlet 202 will sink and pass through the heat dissipation fan groups 301, and the cold air flows upwards under the guidance of the fans 3011 of the heat dissipation fan groups 301 and carries away the heat emitted by the plurality of batteries 4 to reduce the temperature of the batteries 4, and then the hot air is formed and gathered at the top of the accommodating cavity of the equipment body 1, and the hot air is input into the heat exchange air duct 2 through the air outlet 201.

[0028] In one embodiment, as shown in Figure 1 The upper part of the plurality of batteries 4 is provided with a charging and discharging module 8, and the fans of the air outlet group 302 are uniformly and spacedly arranged above the charging and discharging module 8. The charging and discharging module 8 is provided with a positive current probe and a negative current probe, and the positive and negative poles of the battery 4 are in contact with the positive current probe and the negative current probe respectively, so that the charging and discharging of the battery 4 is realized.

[0029] Since the charging and discharging module 8 also emits heat, the charging and discharging module 8 is arranged between the plurality of batteries 4 and the air outlet group 302, and the airflow passes through the charging and discharging module 8 after passing through the plurality of batteries 4, and then passes through the air outlet group 302 and is discharged into the air outlet 201, so that the heat dissipation of the charging and discharging module 8 is realized, and the heat dissipation effect is improved.

[0030] In one embodiment, the installation height of the air outlet group 302 is lower than the installation height of the air outlet 201 of the heat exchange air duct 2, and the airflow formed by the air outlet of the air outlet group 302 is directed towards the air outlet 201 of the heat exchange air duct 2. Since the hot air flows upwards, when the installation height of the air outlet group 302 is lower than the installation height of the air outlet 201 of the heat exchange air duct 2, the hot air is beneficial to flow from the air outlet group 302 to the air outlet 201 of the heat exchange air duct 2, and the accumulation of the hot air in the equipment body 1 is avoided, and the heat dissipation effect of the battery 4 is affected.

[0031] In one embodiment, the capacity dividing device further comprises a plurality of temperature sensors. The plurality of heat dissipation fan groups 301 are arranged corresponding to the plurality of batteries 4. The air speed of each heat dissipation fan group 301 can be adjusted individually. The plurality of temperature sensors are arranged one by one corresponding to the plurality of batteries 4, and are used for detecting the temperature of each battery 4. Each temperature sensor is electrically connected with the heat dissipation fan group 301 corresponding to the battery 4.

[0032] Each battery 4 of the embodiment of the utility model is configured with a single temperature sensor to detect the temperature thereof, and is configured with an independent heat dissipation fan group 301. The air speed of the heat dissipation fan group 301 is adjusted according to the real-time temperature of the battery 4, so that the temperatures of the plurality of batteries 4 tend to be consistent, and the heat dissipation effect is good, thereby being beneficial to improving the accuracy of the capacity determination of the battery 4.

[0033] Specifically, the temperature sensor can be selected according to the needs of any existing structure, and the embodiments of the utility model do not make too many restrictions. Each fan 3011 can be provided with a drive motor, and the duty cycle (pulse width PWM) of the control signal is used to adjust the speed of the drive motor, so as to realize accurate control of the fan speed of the fan 3011, and more effectively control the flow of cold air, so as to improve the heat dissipation effect of the battery 4 and maintain the consistency of the temperature of the multiple batteries 4.

[0034] It should be noted that the embodiments of the utility model do not limit the number of fans 3011 in the heat dissipation fan group 301, and one, two or more than two can be selected according to the needs.

[0035] In addition, the corresponding relationship between the heat dissipation fan group 301 and the battery 4 is not limited. Each heat dissipation fan group 301 can be individually corresponding to one battery 4, or can be corresponding to a pair of batteries 4, three batteries 4 or more than three batteries 4. When one heat dissipation fan group 301 corresponds to multiple batteries 4, the batteries 4 can be divided into multiple areas, a fixed number of batteries 4 are arranged in each area, and one heat dissipation fan group 301 is corresponding to each area. The batteries 4 in each area can share one temperature sensor to reduce the use cost.

[0036] In one embodiment, as shown in Figure 1 Each heat dissipation fan group 301 includes at least one fan 3011, and each heat dissipation fan group 301 corresponds to at least one battery 4.

[0037] Further, in one embodiment, each heat dissipation fan group 301 includes one fan 3011, and one fan 3011 is arranged at the bottom of the equipment body 1 and corresponds to a pair of batteries 4. The air outlet of the fan 3011 faces the corresponding pair of batteries 4.

[0038] In one embodiment, as shown in Figure 1 The water inlet pipe 6 is provided with a flow regulating valve 9. The flow regulating valve 9 is electrically connected with the multiple temperature sensors. By setting the flow regulating valve 9, the flow of cold water input by the water inlet pipe 6 can be adjusted. The flow regulating valve 9 is electrically connected with the multiple temperature sensors, so as to adjust the heat exchange capacity of the heat exchanger 5 according to the real-time temperature of the battery 4. When the temperature of the battery 4 rises, the speed of the fan 3011 of the heat dissipation fan group 301 and the opening of the flow regulating valve 9 are simultaneously increased, and the heat dissipation effect of the battery 4 is further improved. When the temperature of the battery 4 decreases, the speed of the fan 3011 of the heat dissipation fan group 301 and the opening of the flow regulating valve 9 are simultaneously reduced.

[0039] Further, the device for battery capacity measurement further comprises a plurality of ambient temperature sensors, which are electrically connected with the flow regulating valve 9 and arranged in the device body 1 respectively.

[0040] In one embodiment, as shown in the drawings, the device body 1 is provided with a battery capacity measurement tray 10, and the plurality of batteries 4 are arranged in the battery capacity measurement tray 10 so as to transport the batteries 4. Figure 1

[0041] The working principle of the device for battery capacity measurement is as follows:

[0042] The airflow in the heat exchange air duct 2 forms cold air after passing through the heat exchanger 5, and the cold air passes through the air inlet 202 and is blown to the plurality of heat dissipation fan groups 301 under the driving of the air inlet group 303. Under the guiding action of the plurality of heat dissipation fan groups 301, the cold air flows upwards through the batteries 4 and the charging and discharging module 8 and carries away the heat of the plurality of batteries 4 and the charging and discharging module 8, and then forms hot air and is gathered at the top of the accommodating cavity of the device body 1. The hot air flows to the air outlet 201 of the heat exchange air duct 2 under the driving of the air outlet group 302 and enters the heat exchange air duct 2. After heat exchange by the heat exchanger 5, the hot air re-forms cold air and is input into the accommodating cavity from the air inlet 202, thereby forming a heat dissipation cycle.

[0043] The water inlet pipe 6 inputs cooling water to the heat exchanger 5, and the cooling water exchanges heat with the hot air at the heat exchanger 5, thereby forming hot water flowing out from the water outlet pipe 7.

[0044] The plurality of temperature sensors are used to detect the temperatures of the plurality of batteries 4 respectively, and each battery 4 corresponds to a heat dissipation fan group 301. The rotation speed of the fan 3011 in the heat dissipation fan group 301 is adjusted according to the temperature value detected by the battery 4 in real time. When the temperature value increases, the rotation speed of the fan 3011 is increased, and when the temperature value decreases, the rotation speed of the fan 3011 is decreased.

[0045] Through the heat dissipation cycle, the temperature difference between different batteries 4 in the device body 1 is less than or equal to 4℃, which can significantly improve the heat dissipation effect of the batteries 4, ensure the temperature consistency between different batteries 4, and improve the accuracy of capacity measurement of the batteries 4.

[0046] ​To realize the basic function of the battery capacity grading device, the battery capacity grading device in the embodiment can further include other necessary modules or components, such as a control system, a shell, etc. It should be noted that the other necessary modules or components included in the battery capacity grading device can be selected from any suitable existing configuration. To clearly and simply illustrate the technical solutions provided in the embodiment, the above-mentioned parts will not be described in detail here, and the accompanying drawings are also simplified accordingly. However, it should be understood that the utility model is not limited in scope by this.

[0047] Although the embodiments of the utility model have been described in conjunction with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A capacity-distributing device, characterized in that, include: The device body (1) has a heat exchange air duct (2) on the side. The heat exchange air duct (2) has an air outlet (201) and an air inlet (202) located below the air outlet (201). The device body (1) has multiple batteries (4). Multiple fan groups (3) are disposed inside the device body (1), including multiple cooling fan groups (301) and air outlet groups (302). The cold air delivered by the air inlet (202) is directed toward the multiple cooling fan groups (301). The multiple cooling fan groups (301) are disposed at the bottom of the device body (1) to guide the cold air to the multiple batteries (4). The air outlet group (302) is disposed above the multiple batteries (4) to guide the hot air passing through the multiple batteries (4) to the air outlet (201). A heat exchanger (5) is located in the heat exchange duct (2) and is used to exchange heat with the hot air and form the cold air. The two ends of the heat exchanger (5) are respectively connected to the inlet pipe (6) and the outlet pipe (7).

2. The capacity-dividing device according to claim 1, characterized in that, The heat exchange duct (2) is located on opposite sides of the equipment body (1).

3. The capacity-dividing device according to claim 1 or 2, characterized in that, The plurality of fan assemblies (3) further include an air inlet assembly (303) located at the air inlet (202).

4. The capacity-distributing device according to claim 3, characterized in that, Multiple cooling fan assemblies (301) are spaced apart at the bottom of the device body (1), and the air intake assembly (303) is installed at a height higher than the multiple cooling fan assemblies (301).

5. The capacity-dividing device according to claim 1 or 2, characterized in that, A charging and discharging module (8) is provided above the multiple batteries (4), and the fans of the air outlet group (302) are evenly spaced above the charging and discharging module (8).

6. The capacity-dividing device according to claim 5, characterized in that, The installation height of the air outlet group (302) is lower than the installation height of the air outlet (201) of the heat exchange duct (2), and the airflow formed by the air outlet of the air outlet group (302) is directed toward the air outlet (201) of the heat exchange duct (2).

7. The capacity-dividing device according to claim 1 or 2, characterized in that, Each of the cooling fan groups (301) includes at least one fan (3011), and each of the cooling fan groups (301) corresponds to at least one of the batteries (4).

8. The capacity-dividing device according to claim 7, characterized in that, Each of the cooling fan assemblies (301) includes a fan (3011), one of the fans (3011) being located at the bottom of the device body (1) and corresponding to a pair of batteries (4), with the air outlet of the fan (3011) facing the pair of batteries (4) corresponding to it.

9. The capacity-dividing device according to claim 1 or 2, characterized in that, The inlet pipe (6) is equipped with a flow regulating valve (9); The capacity distribution device also includes multiple ambient temperature sensors, which are electrically connected to the flow regulating valve (9) and are respectively located inside the device body (1).

10. The capacity-dividing device according to claim 1 or 2, characterized in that, The device body (1) is provided with a capacity tray (10), and a plurality of batteries (4) are disposed in the capacity tray (10).

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