Lithium iron phosphate battery charging and discharging detection device

Abstract

The utility model discloses a lithium iron phosphate battery charging and discharging detection device which is composed of an air pump, a controller, an outer box body and a heat preservation box body. The outer box body is sleeved with the heat preservation box body, and the top of the heat preservation box body is detachably covered with a heat preservation box cover. The air pump is located outside the heat preservation box body, a hard inner box body is erected in the outer box body in a spaced mode, a placing frame is erected in the outer box body, and a hard inner box cover covers the top of the outer box body. An air spraying pipe surrounding the inner box body is arranged on the inner side wall of the outer box body, multiple holes are formed in the pipe wall, and the pipe wall is connected with an air inlet pipe penetrating out of the heat preservation box body and connected with an air pump. In addition, a heating component and a temperature sensor are arranged in the outer box body. The heat preservation box cover and the inner box cover are respectively provided with a first sealing plug and a second sealing plug which are detachable, and threading holes are formed in the centers. Ventilation holes penetrating through the outer box body are further formed in the side wall of the heat preservation box body. The controller is arranged outside the heat preservation box body and electrically connected with the air pump, the heating component and the temperature sensor. The device can control the environment temperature of the battery at low cost, and creates favorable conditions for charge and discharge detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery detection technical field, concretely relates to a kind of lithium iron phosphate battery charge-discharge detection device. BACKGROUND

[0002] The charge-discharge speed, charge-discharge stability and storage capacity of lithium iron phosphate battery are closely related to ambient temperature.In the process of matching vehicle with lithium iron phosphate battery, multiple charge-discharge detections are needed according to the power consumption of the matched vehicle, charging power and ambient temperature, so as to obtain the actual application value and optimize the electric control matching mechanism.The control of ambient temperature is a difficult detection condition.

[0003] The current mainstream equipment simulates the ambient temperature by building an environmental chamber, but the establishment of the environmental chamber is costly, the use is also expensive, and the temperature control is slow, so the use effect needs to be improved.

[0004] Therefore, a lithium iron phosphate battery charge-discharge detection device is designed to control the ambient temperature of the battery at a low cost and create favorable conditions for charge-discharge detection. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a lithium iron phosphate battery charge-discharge detection device to solve the problems described in the background.

[0006] The technical solution of the utility model is as follows:

[0007] The utility model provides a kind of lithium iron phosphate battery charging and discharging detection device, including adjustable flow air pump, including controller, still including the outer box body of hard material and the upper end opening, the outer box body is equipped with the heat preservation box body of heat preservation material and the upper end opening, detachable cover of heat preservation box body top is equipped with the heat preservation box cover of heat preservation material, the air pump is located outside heat preservation box body, the inside of outer box body is equipped with the inner box body of hard material, the outer wall of inner box body and the inner wall of outer box body are spaced apart, the inside of inner box body is equipped with rack, detachable cover of inner box body top is equipped with the inner box cover of hard material, the inner wall of outer box body is further equipped with air jet pipe, air jet pipe surrounds inner box body a circle and is connected head to tail, multiple air injection holes are formed on the wall of air jet pipe, air jet pipe is further connected with air inlet pipe, the other end of air inlet pipe is connected with air pump by passing through outer box body and heat preservation box body, heating component is further equipped in outer box body, heat preservation box cover is equipped with first threading hole, first sealing plug is detachably mounted in first threading hole, second threading hole is formed in the center of first sealing plug, third threading hole is formed in inner box cover, second sealing plug is detachably mounted in third threading hole, fourth threading hole is formed in the center of second sealing plug, temperature sensor is further equipped in outer box body, the side wall of heat preservation box body is further equipped with air exchange hole, which penetrates the side wall of outer box body simultaneously, controller is located outside heat preservation box body, air pump, heating component, temperature sensor are electrically connected with controller.

[0008] When using the above scheme, the wire harness for charging and discharging detection is sequentially threaded through the second threading hole, the first threading hole, the fourth threading hole and the third threading hole. Then the lithium iron phosphate battery is placed on the rack, and the outer wall of the battery is kept spaced apart from the inner wall of the inner box body. The wire harness is connected to the battery, and then the inner box cover is closed. The second sealing plug is loaded into the third threading hole, and then the heat preservation box cover is closed. The first sealing plug is loaded into the first threading hole.

[0009] When the required test temperature is higher than the ambient temperature, the heating component is started by the controller to warm the air in the outer box body. When the temperature measured by the temperature sensor is lower than the set range, the heating component keeps working. When the temperature measured by the temperature sensor is higher than the set range, the heating component stops working. After the temperature in the outer box body reaches the preset temperature range for one hour, the temperature of the air in the inner box body and the temperature of the battery also basically remain consistent with the temperature in the outer box body. At this time, the charging and discharging detection is started. During the charging and discharging process of the battery, the temperature will rise. When the temperature in the outer box body is higher than the set temperature range, the air pump is started to blow low-temperature air from outside into the air inlet pipe, and then into the air jet pipe from the air inlet pipe. The air is sprayed out from the air injection holes to cool the air in the outer box body. When the temperature drops to the set temperature range, the air pump is turned off.

[0010] When the required test temperature is lower than the ambient temperature, the incubator is placed in the refrigerator, the incubator cover and the inner cover are opened, and the temperature of the refrigerator is set to the required test temperature. After one hour, the temperature of the battery is equal to the temperature of the refrigerator, and the inner cover and the incubator cover are closed. At this time, the outer box body functions to isolate the circulating air in the refrigerator, avoiding the direct effect of the circulating cold air on the inner box body, thereby simulating the case where the battery does not directly contact the cold air flow in the vehicle compartment. Set the temperature range, and at this time, start the charge and discharge detection. When the temperature measured by the temperature sensor is higher than the set range, the air pump is started to cool the air in the outer box body. When the temperature drops to the set temperature range, the air pump is turned off.

[0011] The working principle of the device can completely simulate the use of lithium iron phosphate batteries in vehicles. The inner box body is equivalent to the battery compartment on the vehicle, and the air temperature in the outer box body is equivalent to the constant air temperature in a large space environment. The heat generated by the battery in the inner box body heats the inner box body, and the inner box body exchanges heat with the air in the outer box body through the box wall, so that the temperature change in the inner box body is close to the use state of the vehicle-mounted battery.

[0012] The device can control the test environment temperature by using a simple refrigerator and heating components, which is low in cost and fast in temperature change response, thereby creating favorable conditions for charge and discharge detection and improving the reliability of lithium iron phosphate battery charge and discharge detection.

[0013] Further, a plurality of pipe clamps are fixed on the inner side wall of the outer box body, and the air injection pipe is clamped in the pipe clamps.

[0014] Further, the temperature sensor is arranged in the incubator cover, and the measurement part of the temperature sensor is arranged in the gap between the outer box body and the inner box body.

[0015] Further, the second support is fixed on the inner bottom wall of the outer box body, and the inner box body is fixed on the second support.

[0016] Further, the third support is fixed on the inner bottom wall of the inner box body, and the placing rack is fixed on the third support.

[0017] Further, the placing rack is a placing net made of hard material.

[0018] Further, the first support is further fixed on the inner bottom wall of the outer box body, and the heating component is arranged on the first support.

[0019] Further, the incubator is a foam box, and the incubator cover is a foam box cover.

[0020] Further, the first sealing plug and the second sealing plug are made of EVA foam material.

[0021] Further technical solutions are that the air pump is a peristaltic pump.

[0022] The utility model discloses beneficial effect lies in:

[0023] 1, simulate real environment: the inner box body is equivalent to the battery compartment on the car, and the heat exchange is carried out with the air in the outer box body through the box wall, so that the temperature change in the inner box body is close to the use state of the vehicle-mounted battery, and the reliability of test is improved.

[0024] 2, low cost and quick response: utilize simple refrigerator and heating component to realize the control of test environment temperature, reduce the cost, and the temperature change is quick in response, and create favorable conditions for charge and discharge detection. DRAWINGS

[0025] Figure 1 It is the top view schematic diagram of the device;

[0026] Figure 2 It is Figure 1 The schematic diagram of the heat preservation box cover is hidden;

[0027] Figure 3 It is Figure 2 The schematic diagram of the inner box cover is hidden;

[0028] Figure 4 It is the side view schematic diagram of the device;

[0029] Figure 5 It is Figure 4 The internal section view schematic diagram of the device.

[0030] In the drawing, 1, foam box cover, 2, temperature sensor, 3, first threading hole, 4, first sealing plug, 5, second threading hole, 6, foam box, 7, outer box body, 8, pipe buckle, 9, air jet pipe, 10, heating rod, 11, first support, 12, air inlet pipe, 13, inner box cover, 14, third threading hole, 15, second sealing plug, 16, fourth threading hole, 17, inner box body, 18, placing net, 19, second support, 20, third support, 21, air hole. DETAILED DESCRIPTION

[0031] In order to better understand the technical content of the utility model, the following specific embodiment is provided, and the utility model is further explained in combination with the drawings.

[0032] Referring to Figures 1 to 5 A lithium iron phosphate battery charge and discharge detection device, comprising an air pump with adjustable flow, comprising a controller.

[0033] Preferably, the air pump is a peristaltic pump, and the peristaltic pump is electrically connected with the controller.

[0034] Preferably, the controller adopts an STM32 single-chip microcomputer or a SMART200 PLC controller.

[0035] The device also comprises an outer box body 7 made of hard material and having an open top end.

[0036] Preferably, the outer box body 7 is a cuboid box body made of hard plastic.

[0037] The outer box body 7 is externally sleeved with a heat-insulating box body made of heat-insulating material and having an open top end, and a heat-insulating box cover made of heat-insulating material is detachably arranged on the top of the heat-insulating box body. The peristaltic pump and the controller are arranged outside the heat-insulating box body.

[0038] It should be particularly noted that the peristaltic pump and the controller are external carriers, and there is no mandatory requirement for fixed installation. When the device is used, the peristaltic pump and the controller can be used as movable external carriers, or can be selected to be installed on the outer wall of the heat-insulating box body according to actual use. Since the peristaltic pump and the controller are common technical means in the art, the specific structure of the peristaltic pump and the controller is not given in the drawings.

[0039] Preferably, the heat-insulating box body is a foam box 6, and the heat-insulating box cover is a foam box 6 cover 1.

[0040] The inner box body 17 made of hard material is arranged in the inner space of the outer box body 7, the outer wall of the inner box body 17 is arranged in spaced relation to the inner wall of the outer box body 7, a placing rack is arranged in the inner space of the inner box body 17, and an inner box cover 13 made of hard material is detachably arranged on the top of the inner box body 17.

[0041] Preferably, a second support 19 is fixedly arranged on the inner bottom wall of the outer box body 7, and the inner box body 17 is fixedly arranged on the second support 19.

[0042] Preferably, the material of the inner box body 17 and the inner box cover 13 is the same as the material of the battery compartment of the vehicle-mounted battery.

[0043] Preferably, a third support 20 is fixedly arranged on the inner bottom wall of the inner box body 17, and the placing rack is fixedly arranged on the third support 20.

[0044] Preferably, the placing rack is a placing net 18 made of hard material.

[0045] Preferably, the material of the placing net 18 is the same as the material of the battery compartment of the vehicle-mounted battery.

[0046] The inner side wall of the outer box body 7 is further provided with an air jet pipe 9, the air jet pipe 9 surrounds the inner box body 17 once and is connected at the first end and the second end, a plurality of air jet holes are formed in the pipe wall of the air jet pipe 9, and an air inlet pipe 12 is further connected to the air jet pipe 9, the other end of the air inlet pipe 12 penetrates through the side wall of the outer box body 7 and the side wall of the heat-insulating box body and is connected to an air pump.

[0047] Preferably, a plurality of pipe clamps 8 are fixed on the inner side wall of the outer box body 7, and the air injection pipe 9 is clamped in the pipe clamps 8.

[0048] The heating component is further arranged in the outer box body 7.

[0049] Preferably, the heating component is a heating rod 10, and a first support 11 is further fixed on the inner bottom wall of the outer box body 7, the heating component is arranged on the first support 11, and the electric wire of the heating rod 10 is connected with the electric wire of the controller by penetrating the side wall of the outer box body 7 and the side wall of the heat preservation box body.

[0050] The heat preservation box cover is provided with a first wire penetrating hole 3, and a first sealing plug 4 is detachably arranged in the first wire penetrating hole 3, and a second wire penetrating hole 5 is arranged in the center of the first sealing plug 4. The inner box cover 13 is provided with a third wire penetrating hole 14, and a second sealing plug 15 is detachably arranged in the third wire penetrating hole 14, and a fourth wire penetrating hole 16 is arranged in the center of the second sealing plug 15.

[0051] Preferably, the first sealing plug 4 and the second sealing plug 15 are made of EVA foam material, the first sealing plug 4 is detachably arranged by being inserted into the first wire penetrating hole 3, and the second sealing plug 15 is detachably arranged by being inserted into the third wire penetrating hole 14.

[0052] The temperature sensor 2 is further arranged in the outer box body 7, and the temperature sensor 2 is electrically connected with the controller.

[0053] Preferably, the temperature sensor 2 is arranged in the heat preservation box cover, and the measuring part of the temperature sensor 2 is arranged in the interval between the outer box body 7 and the inner box body 17.

[0054] The side wall of the heat preservation box body is further provided with an air exchange hole 21 which penetrates the side wall of the outer box body 7.

[0055] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lithium iron phosphate battery charge and discharge detection device, comprising an air pump with adjustable flow, comprising a controller, characterized in that: The outer box body is made of hard material and has an open upper end, an outer heat-insulating box body made of heat-insulating material is sleeved on the outer box body, a detachable cover on the top of the outer heat-insulating box body is provided with a heat-insulating box cover made of heat-insulating material, the air pump is arranged outside the outer heat-insulating box body, an inner box body made of hard material is arranged in the inner space of the outer box body, the outer wall of the inner box body is spaced from the inner wall of the outer box body, a placing rack is arranged in the inner space of the inner box body, a detachable cover on the top of the inner box body is provided with an inner box cover made of hard material, a gas jet pipe is further arranged on the inner side wall of the outer box body, the gas jet pipe surrounds the inner box body and is connected at the head and tail, a plurality of gas jet holes are arranged on the pipe wall of the gas jet pipe, an air inlet pipe is further connected to the gas jet pipe, the other end of the air inlet pipe penetrates through the outer box body and the outer heat-insulating box body and is connected to the air pump, a heating component is further arranged in the outer box body, the heat-insulating box cover is provided with a first wire hole, a first sealing plug is detachably arranged in the first wire hole, a second wire hole is arranged at the center of the first sealing plug, a third wire hole is arranged in the inner box cover, a second sealing plug is detachably arranged in the third wire hole, a fourth wire hole is arranged at the center of the second sealing plug, a temperature sensor is further arranged in the outer box body, a gas exchange hole penetrating through the side wall of the outer box body is further arranged in the side wall of the outer heat-insulating box body, and a controller is arranged outside the outer heat-insulating box body.

2. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: A plurality of pipe buckles are fixedly arranged on the inner side wall of the outer box body, and the gas jet pipe is clamped in the pipe buckles.

3. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: The temperature sensor is arranged in the heat-insulating box cover, and a measurement part of the temperature sensor is arranged in the space between the outer box body and the inner box body.

4. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: A second support is fixedly arranged on the inner bottom wall of the outer box body, and the inner box body is fixedly arranged on the second support.

5. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: A third support is fixedly arranged on the inner bottom wall of the inner box body, and the placing rack is fixedly arranged on the third support.

6. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: The placing rack is a placing net made of hard material.

7. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: A first support is further fixedly arranged on the inner bottom wall of the outer box body, and the heating component is arranged on the first support.

8. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: The outer heat-insulating box body is a foam box, and the heat-insulating box cover is a foam box cover.

9. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: The first sealing plug and the second sealing plug are made of EVA foam material.

10. The lithium iron phosphate battery charge and discharge detection device according to claim 1, characterized in that: The air pump is a peristaltic pump.

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