Battery cover plate and battery

Abstract

The utility model discloses a battery cover plate and a battery, the battery cover plate comprises a cover plate assembly, a positive pole, a negative pole and a sensor, and the cover plate assembly is at least partially made of a conductive material; the positive pole is arranged on the cover plate assembly and is electrically connected with the cover plate assembly; the negative pole is arranged on the cover plate assembly and is insulated from the cover plate assembly; the sensor is arranged on the cover plate assembly and connected with a first electric wire and a second electric wire, the first electric wire is electrically connected to the negative pole, the second electric wire is electrically connected to the cover plate assembly, and the sensor is used for detecting temperature and air pressure signals in the battery. According to the technical scheme, the battery cover plate can be mounted on the battery to detect the internal temperature and air pressure of the battery, so that the safety of the battery is improved, and a quantitative basis is provided for subsequent research, development and design of the battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, especially a kind of battery cover plate and battery. BACKGROUND

[0002] To respond to the call of energy saving and emission reduction, new energy vehicle industry develops rapidly, and drives the development of new energy vehicle power battery.As the core components of new energy vehicle, power battery has decisive effect on the performance of vehicle.

[0003] At present, battery cover plate as the sealing device of battery, after covering battery with battery cover plate, the internal pressure and temperature of battery cannot be monitored in real time, so the internal pressure value and temperature value of battery under different voltages cannot be quantitatively analyzed, and it is impossible to give quantitative basis for the matching of subsequent research and development design system, and it is difficult to effectively prevent the occurrence of battery explosion or damage and other accidents according to the internal pressure value and temperature value of battery. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of battery cover plate and battery, to realize that battery cover plate is installed on battery and has the function of detecting the internal temperature and air pressure of battery.

[0005] To achieve the above purpose, the battery cover plate provided by the utility model comprises:

[0006] Cover plate assembly, at least part is made of conductive material;

[0007] Positive pole is arranged on the cover plate assembly and electrically connected with the cover plate assembly;

[0008] Negative pole is arranged on the cover plate assembly and insulated from the cover plate assembly;

[0009] Sensor, the sensor is arranged on the cover plate assembly, the sensor is connected with first electric wire and second electric wire, the first electric wire is electrically connected to the negative pole, and the second electric wire is electrically connected to the cover plate assembly, and the sensor is used to detect the temperature and air pressure signal in the battery.

[0010] Preferably, the cover plate assembly comprises first cover plate and second cover plate, the first cover plate is arranged above the second cover plate, the first cover plate is made of aluminum material, the second cover plate is made of plastic, the sensor is arranged on the second cover plate, and the first cover plate is electrically connected with the second electric wire and the positive pole.

[0011] Preferably, buckle part is arranged on the second cover plate, and the buckle part is used to buckle the sensor on the second cover plate.

[0012] Preferably, the buckle part comprises a plurality of clamping blocks, which are arranged in a ring shape at equal intervals and are pressed on the periphery of the sensor.

[0013] Preferably, the material of the clamping blocks is plastic.

[0014] Preferably, the second cover plate is provided with a through hole, and the second wire is connected to the second cover plate through the through hole.

[0015] Preferably, the first cover plate and the second cover plate are provided with liquid injection holes in the thickness direction.

[0016] Preferably, the sensor is fixed on the second cover plate by means of adhesion.

[0017] Preferably, the second cover plate is provided with a pressing hole, and the sensor is pressed in the pressing hole.

[0018] The utility model also provides a kind of battery, including battery cover plate and battery main body, the battery cover plate is installed on the battery main body, and the battery cover plate includes:

[0019] Cover plate assembly, at least partly by conductive material is made;

[0020] Positive pole is arranged on the cover plate assembly and is electrically connected with the cover plate assembly;

[0021] Negative pole is arranged on the cover plate assembly and is insulated with the cover plate assembly;

[0022] Sensor, the sensor is arranged on the cover plate assembly, the sensor is connected with first wire and second wire, the first wire is electrically connected to the negative pole, and the second wire is electrically connected to the cover plate assembly, and the sensor is used to detect the temperature and pressure signal in the battery.

[0023] Compared with the prior art, the circuit conduction direction in the circuit loop formed by the battery cover plate applied to the battery in the normal working state of the battery can be: the positive pole, the conductive part of the cover plate assembly, the sensor, and the negative pole. Since the battery cover plate itself has a sensor, the sensor can test the actual values of the internal pressure and temperature of the battery during the detection process. According to the actual values of the internal pressure and temperature of the battery, on the one hand, the temperature and pressure value range can be monitored in real time to determine whether it exceeds the normal range, and on the other hand, the relationship between the temperature data and the voltage of the battery or the relationship between the pressure data and the voltage of the battery can be analyzed according to the real-time monitoring data, thereby providing a quantitative basis for the matching of the subsequent research and design system, and the safety performance of the battery is improved. In this way, the sensor in the battery cover plate of the utility model does not need to be connected to an external circuit, but only needs to be connected to the conductive part of the cover plate assembly and the negative pole, so that the sensor can be powered, the structure is simple, convenient and fast, and the battery cover plate can be mass-produced to ensure that each battery cover plate can detect the internal pressure and temperature values of the battery after being installed on the battery, and the production efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the battery cover plate of the utility model;

[0025] Figure 2 It is a structural schematic view of another perspective of the battery cover plate of the utility model;

[0026] Figure 3 It is a separation schematic view of the first cover plate and the second cover plate of the battery cover plate of the utility model.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 100, cover plate assembly; 210, positive pole; 220, negative pole; 300, sensor; 310, first wire; 320, second wire; 110, first cover plate; 120, second cover plate; 121, buckle part; 122, clamping block; 123, through hole; 101, liquid injection hole; 102, positive pole through hole; 103, negative pole through hole; 400, explosion-proof valve. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figures 1 to 3 The utility model provides a kind of battery cover plate, for encapsulation on battery.

[0030] The battery cover plate comprises a cover plate assembly 100, a positive pole 210, a negative pole 220 and a sensor 300, the cover plate assembly 100 is at least partially made of conductive material; the positive pole 210 is arranged on the cover plate assembly 100 and is electrically connected to the cover plate assembly 100; the negative pole 220 is arranged on the cover plate assembly 100 and is insulated from the cover plate assembly 100; the sensor 300 is arranged on the cover plate assembly 100, the sensor 300 is connected with a first wire 310 and a second wire 320, the first wire 310 is electrically connected to the negative pole 220, the second wire 320 is electrically connected to the cover plate assembly 100, and the sensor 300 is used for detecting the temperature and air pressure signals inside the battery.

[0031] Specifically, the sensor 300 transmits the detected air pressure and temperature data inside the battery to an external data unit or a control unit in a wireless communication mode. An insulating protective pad can be arranged between the negative pole 220 and the cover plate assembly 100 to insulate the two, which is a very common prior art and will not be described here. When the battery cover plate is applied to a battery, the circuit conduction direction in the circuit loop formed in the normal working state of the battery can be: the positive pole 210, the conductive part of the cover plate assembly 100, the sensor 300, and the negative pole 220. Since the battery cover plate itself has the sensor 300, the sensor 300 can test the actual values of the air pressure and temperature inside the battery during the detection process. According to the actual values of the air pressure and temperature inside the battery, on the one hand, it can monitor whether the temperature and air pressure value range exceeds the normal range in real time, and on the other hand, it can analyze the relationship between the temperature data and the voltage of the battery or the relationship between the air pressure data and the voltage of the battery according to the real-time monitoring data, giving quantitative basis for the matching of the subsequent research and design system, which is beneficial to improving the safety performance of the battery. In this way, the sensor 300 in the battery cover plate of the utility model does not need to be connected to an external circuit, but only needs to be connected to the conductive part of the cover plate assembly 100 and the negative pole 220, so as to supply power to the sensor 300, which is simple in structure, convenient and fast, and the battery cover plate can be mass-produced to ensure that each battery cover plate can detect the air pressure and temperature values inside the battery after being installed on the battery, thereby improving the production efficiency.

[0032] Please refer to Figures 1 to 3Preferably, the cover plate assembly 100 comprises a first cover plate 110 and a second cover plate 120, the first cover plate 110 is arranged above the second cover plate 120, the first cover plate 110 is made of aluminum material, the second cover plate 120 is made of plastic, the sensor 300 is arranged on the second cover plate 120, and the first cover plate 110 is electrically connected with the second wire 320 and the positive pole 210. Specifically, the first cover plate 110 has a negative pressure through hole for the negative pole 220 to penetrate and a positive pressure through hole for the positive pole 210 to penetrate, an insulating protective pad can be arranged between the negative pole 220 and the negative pressure through hole of the first cover plate 110 to insulate the two, the positive pole 210 is in direct electrical contact with the first cover plate 110, realizing electrical connection between the positive pole 210 and the first cover plate 110, and the negative pole 220 is insulated from the first cover plate 110. In this way, when the battery cover plate is applied to a battery, the circuit conduction direction in the circuit loop formed in the normal working state of the battery can be: positive pole 210, first cover plate 110, sensor 300, negative pole 220, so that even if the current in the circuit is very small, it is enough to enable the sensor 300 to operate to provide corresponding power, and to ensure that the sensor 300 detects the internal pressure and temperature signals of the battery.

[0033] Please refer to Figure 1 and Figure 3 Preferably, the second cover plate 120 is provided with a buckle part 121, and the buckle part 121 is used for buckling the sensor 300 on the second cover plate 120. In this way, the sensor 300 is fixed on the second cover plate 120 in a buckling manner, which is convenient and fast.

[0034] Please refer to Figure 1 and Figure 3 Preferably, the buckle part 121 comprises a plurality of clamping blocks 122, and the plurality of clamping blocks 122 are arranged in a ring shape at equal intervals and are overlaid on the periphery of the sensor 300. By buckling the plurality of clamping blocks 122 on the periphery of the sensor 300, the clamping blocks 122 realize the buckling and fixing of the sensor 300, which is simple in structure and easy to realize, and keeps the force of the sensor 300 balanced.

[0035] Preferably, the material of the clamping block 122 is plastic. Of course, the clamping block 122 can also be made of other materials.

[0036] Please refer to Figures 1 to 3 Preferably, the second cover plate 120 is provided with a through hole 123, and the second wire 320 penetrates the through hole 123 to be connected to the second cover plate 120. The second wire 320 is welded on the first cover plate 110 through the through hole 123 of the second cover plate 120, so that the sensor 300 can be electrically connected with the first cover plate 110.

[0037] Please refer to Figures 1 to 3Preferably, the first cover plate 110 and the second cover plate 120 are formed with the liquid injection hole 101 in the thickness direction. The battery can be injected with liquid from the liquid injection hole 101, and the liquid injection hole 101 is sealed with a sealing aluminum nail after the liquid injection is completed, so as to avoid exposure of the electrolyte in the battery. The battery cover plate is also provided with an explosion-proof valve 400, which allows gas to escape to the outside of the battery when the internal pressure of the battery is too large.

[0038] The sensor 300 can be fixed on the second cover plate 120 in various ways. Preferably, the sensor 300 is fixed on the second cover plate 120 by adhesion.

[0039] The sensor 300 can also be fixed on the second cover plate 120 by pressing. Preferably, the second cover plate 120 is provided with a pressing hole, and the sensor 300 is pressed in the pressing hole. The sensor 300 is pressed on the second cover plate 120 by using its own structural strength.

[0040] The utility model also provides a battery, the battery includes battery cover plate and battery main body, battery cover plate is installed on battery main body, this battery cover plate includes cover plate subassembly 100, positive pole 210, negative pole 220 and sensor 300, cover plate subassembly 100 is made at least partially of conductive material;Positive pole 210 is arranged on cover plate subassembly 100 and is electrically connected with cover plate subassembly 100;Negative pole 220 is arranged on cover plate subassembly 100 and is insulated with cover plate subassembly 100;Sensor 300 is arranged on cover plate subassembly 100, and sensor 300 is connected with first electric wire 310 and second electric wire 320, and first electric wire 310 is electrically connected to negative pole 220, and second electric wire 320 is electrically connected to cover plate subassembly 100, and sensor 300 is used to detect the temperature and pressure signal in the battery. Since the battery includes the above-mentioned battery cover plate, the battery has all the beneficial effects of the battery cover plate, which will not be repeated here.

[0041] The above is only an optional embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A battery cover plate for encapsulating on a battery, characterized by, The battery cover plate comprises: a cover plate assembly made at least partially of conductive material; a positive pole column arranged on the cover plate assembly and electrically connected to the cover plate assembly; a negative pole column arranged on the cover plate assembly and insulated from the cover plate assembly; a sensor arranged on the cover plate assembly, the sensor being connected with a first electric wire and a second electric wire, the first electric wire being electrically connected to the negative pole column, and the second electric wire being electrically connected to the cover plate assembly, the sensor being used for detecting temperature and air pressure signals inside the battery.

2. The battery cover plate of claim 1, wherein, The cover plate assembly comprises a first cover plate and a second cover plate, the first cover plate being arranged above the second cover plate, the first cover plate being made of aluminum material, and the second cover plate being made of plastic, the sensor being arranged on the second cover plate, and the first cover plate being electrically connected to the second electric wire and the positive pole column.

3. The battery cover plate of claim 2, wherein, The second cover plate is provided with a buckle part, the buckle part being used for buckling the sensor on the second cover plate.

4. The battery cover plate of claim 3, wherein, The buckle part comprises a plurality of buckle blocks, the buckle blocks being arranged in a ring shape at equal intervals and being pressed on the periphery of the sensor.

5. The battery cover plate of claim 4, wherein, The buckle blocks are made of plastic.

6. The battery cover plate of claim 2, wherein, The second cover plate is provided with a through hole, and the second electric wire is connected to the second cover plate through the through hole.

7. The battery cover plate of claim 6, wherein, The first cover plate and the second cover plate are provided with liquid injection holes in the thickness direction.

8. The battery cover plate of claim 2, wherein, The sensor is fixed on the second cover plate by means of gluing.

9. The battery cover plate of claim 2, wherein, The second cover plate is provided with a pressing hole, and the sensor is pressed in the pressing hole.

10. A battery, characterized by The battery cover plate as claimed in any one of claims 1 to 9 is installed on a battery body.

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