CN216488220U - Last temperature and voltage acquisition device of power battery - Google Patents
Last temperature and voltage acquisition device of power battery Download PDFInfo
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- CN216488220U CN216488220U CN202123000424.2U CN202123000424U CN216488220U CN 216488220 U CN216488220 U CN 216488220U CN 202123000424 U CN202123000424 U CN 202123000424U CN 216488220 U CN216488220 U CN 216488220U
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- temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a temperature and voltage acquisition device on a power battery, which comprises a bearing part arranged on a top cover of a battery core of the power battery; the voltage acquisition terminals are positioned on the bearing part and connected with the anode and the cathode of the battery core, and the voltage acquisition terminals are connected with voltage acquisition lines; and the temperature sensor is positioned on the bearing part and is in contact with the battery core, and the temperature sensor is connected with a temperature acquisition line. The utility model has the following advantages: by collecting the temperature of the top cover of the battery core, the response speed is high when the temperature of the battery core changes; when heavy current is charged and discharged, the acquired temperature has no deviation with the true temperature of the battery core; the vehicle vibrates for a long time, the NTC has no fatigue fracture risk, and the service life is longer; the direct assembly need not the welding, has saved equipment, human cost.
Description
Technical Field
The utility model relates to an acquisition device, in particular to a temperature and voltage acquisition device on a power battery.
Background
The temperature acquisition mode of traditional pencil class collection system utilizes the temperature of gathering the aluminium bar to come the representation battery temperature, gathers electric core voltage through the mode of wire ultrasonic welding on the aluminium bar, gathers aluminium bar surface temperature through the mode of aluminium terminal NTC ultrasonic welding on the aluminium bar, and then the temperature of representation electric core.
The temperature of the battery cell is characterized by collecting the surface temperature of the aluminum bar, and the method has the following defects: the cell temperature is conducted through the aluminum bar, and when the cell temperature changes, the response speed is low; when heavy current is charged and discharged, the aluminum bar can be heated, so that the acquired temperature deviates from the actual temperature of the battery cell; the vehicle vibrates for a long time, and the welded root has fatigue fracture risk, so that the acquisition function is lost; the process of ultrasonic welding the aluminum terminal needs to invest equipment and labor cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the technology, the utility model provides a temperature and voltage acquisition device on a power battery.
In order to solve the technical problems, the utility model adopts the technical scheme that: a temperature and voltage acquisition device on a power battery comprises a bearing part arranged on a top cover of a battery core of the power battery; the voltage acquisition terminals are positioned on the bearing part and connected with the positive electrode and the negative electrode of the battery core, and the voltage acquisition terminals are connected with voltage acquisition lines; and the temperature sensor is positioned on the bearing part and is in contact with the battery core, and the temperature sensor is connected with a temperature acquisition line.
Furthermore, the bearing part is a plate-shaped body with a plane bottom, the plane shape of the bottom surface of the plate-shaped body is consistent with the plane shape of the cell top cover of the power battery, and the bottom surface of the plate-shaped body and the cell top cover are mutually attached.
Furthermore, the voltage acquisition terminal is an aluminum bar, a plurality of voltage acquisition bins are arranged on the plate-shaped body, one aluminum bar is arranged in each voltage acquisition bin, and each aluminum bar is connected with the positive electrode and the negative electrode of the battery cell at the corresponding position of the aluminum bar.
Furthermore, a temperature sensing bin is arranged on the plate-shaped body, a clamping component is arranged in the temperature sensing bin, and the temperature sensor is clamped on the top cover of the battery core through the clamping component.
Furthermore, the clamping component comprises a holding part and a cantilever part, the cantilever part and the holding part form a forked structure, the holding part is connected with the temperature sensing bin, a clamping groove is formed in the cantilever part, and the temperature sensor is clamped in the clamping groove.
Further, the temperature sensor is an NTC thermistor.
Furthermore, a wire slot is formed in the plate-shaped body, and the voltage acquisition line and the temperature acquisition line are arranged in the wire slot along the wire slot opening direction and extend out of the plate-shaped body.
The utility model discloses a temperature and voltage acquisition device on a power battery, which is used on a separation plate, can enable an NTC to directly acquire the temperature of a top cover of a battery cell and has the following advantages: by collecting the temperature of the top cover of the battery cell, the response speed is high when the temperature of the battery cell changes; when heavy current is charged and discharged, the acquired temperature has no deviation from the true temperature of the battery cell; the vehicle vibrates for a long time, the NTC has no fatigue fracture risk, and the service life is longer; the direct assembly need not the welding, has saved equipment, human cost.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a sectional view of the temperature-sensitive chamber of the present invention.
In the figure: 1. a carrier member; 2. a voltage acquisition terminal; 3. a voltage collection line; 4. a temperature sensor; 5. a temperature acquisition line; 6. a voltage collection bin; 7. a temperature sensing bin; 8. a wire slot; 9. a clip member; 91. a holding section; 92. a cantilever portion; 93. a clamping groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The temperature and voltage acquisition device on the power battery shown in fig. 1 and fig. 2 is a device for quickly mounting and acquiring the temperature and voltage of a battery cell on a vehicle battery cell, and has a specific structure as follows, and comprises a bearing part 1 arranged on a top cover of the battery cell of the power battery; the bearing part 1 is a plate-shaped body with a planar bottom, is equivalent to a separation plate with a bearing function, the planar shape of the bottom surface of the plate-shaped body is consistent with that of the top cover of the battery core of the power battery, and the bottom surface of the plate-shaped body and the top cover of the battery core are mutually attached, so that a sampling end is conveniently arranged on the bottom of the plate-shaped body, and meanwhile, the assembly is convenient, welding is not needed, and much equipment and labor cost are saved.
The voltage acquisition terminal 2 is positioned on the bearing part 1 and connected with the positive electrode and the negative electrode of the battery core, the voltage acquisition terminal 2 is an aluminum bar, a plurality of voltage acquisition bins 6 are arranged on the plate-shaped body in a vertically penetrating manner, one aluminum bar is arranged in each voltage acquisition bin 6, the aluminum bars are mutually bonded or connected with the voltage acquisition bins through side walls in other modes, and each aluminum bar is connected with the positive electrode and the negative electrode of the battery core at the corresponding position. Principle of collecting voltage: the aluminium bar is connected with the positive and negative electrodes of the battery cell, so that the battery cell is connected in series into a module. Welding a lead on each aluminum bar, wherein the voltage difference between every two leads is that the voltage aluminum bar of the current electric core is connected with a voltage acquisition line, and the acquired voltage is transmitted to the back-end processing equipment through the voltage acquisition line;
temperature sensing storehouse 7 has been seted up on the platelike body, is provided with joint part 9 in the temperature sensing storehouse 7, and temperature sensor 4 passes through joint part 9 block on electric core top cap. The temperature sensor 4 is an NTC thermistor which is a negative temperature coefficient resistor, each temperature corresponds to a resistance value, the NTC thermistor is placed above the top cover of the battery core, the temperature of the NTC thermistor is the same as that of the battery core, a temperature acquisition line is connected on the NTC thermistor, the acquired temperature value is transmitted to a BMS battery management system through the temperature acquisition line, the resistance value of the NTC thermistor is read, and the temperature of the battery core can be obtained.
The clamping component 9 is used on the isolation plate to fix the NTC thermistor above the top cover of the battery core, so that the temperature of the NTC thermistor is the same as that of the top cover of the battery core, and the real temperature of the battery core is obtained. Specifically, as shown in fig. 2, the clamping member 9 includes a holding portion 91 and a cantilever portion 92, the cantilever portion 92 and the holding portion 91 form a bifurcated structure, which is V-shaped in this embodiment, the holding portion 91 is connected to the temperature-sensing chamber 7, a clamping groove 93 is formed in the cantilever portion 92, the temperature sensor 4 is clamped in the clamping groove 93, and the bifurcated structure formed by the cantilever portion 92 and the holding portion 91 has elasticity, so that the clamping groove of the cantilever portion 92 generates downward elastic force, thereby clamping the temperature sensor, and preventing the temperature sensor from falling off along with the vibration of the vehicle.
In addition, a wire slot 8 is formed in the plate-shaped body, and the voltage collecting wire 3 and the temperature collecting wire 5 are arranged in the wire slot 8 and are arranged along the opening direction of the wire slot 8 and extend out of the plate-shaped body.
The utility model discloses a temperature and voltage acquisition device on a power battery, which is used on a separation plate, can enable an NTC to directly acquire the temperature of a top cover of a battery cell and has the following advantages: by collecting the temperature of the top cover of the battery cell, the response speed is high when the temperature of the battery cell changes; when heavy current is charged and discharged, the acquired temperature has no deviation from the true temperature of the battery cell; the vehicle vibrates for a long time, the NTC has no fatigue fracture risk, and the service life is longer; the direct assembly need not the welding, has saved equipment, human cost.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (7)
1. The utility model provides a temperature and voltage acquisition device on power battery which characterized in that: the battery comprises a bearing component (1) arranged on a top cover of a battery core of the power battery; the voltage acquisition terminals (2) are positioned on the bearing part (1) and connected with the positive electrode and the negative electrode of the battery core, and the voltage acquisition terminals (2) are connected with voltage acquisition lines (3); and the temperature sensor (4) is positioned on the bearing part (1) and is in contact with the battery cell, and a temperature acquisition line (5) is connected to the temperature sensor (4).
2. The temperature and voltage acquisition device on a power battery of claim 1, wherein: the bearing part (1) is a plate-shaped body with a plane bottom, the plane shape of the bottom surface of the plate-shaped body is consistent with the plane shape of a battery core top cover of the power battery, and the bottom surface of the plate-shaped body is mutually attached to the battery core top cover.
3. The temperature and voltage harvesting device on a power cell of claim 2, wherein: the voltage acquisition terminal (2) is an aluminum bar, a plurality of voltage acquisition bins (6) are arranged on the plate-shaped body, one aluminum bar is arranged in each voltage acquisition bin (6), and each aluminum bar is connected with the positive electrode and the negative electrode of the battery cell at the corresponding position of the aluminum bar.
4. The temperature and voltage harvesting device on a power cell of claim 3, wherein: the temperature sensing device is characterized in that a temperature sensing bin (7) is formed in the plate-shaped body, a clamping component (9) is arranged in the temperature sensing bin (7), and the temperature sensor (4) is clamped on the top cover of the battery core through the clamping component (9).
5. The temperature and voltage harvesting device on a power cell of claim 4, wherein: the clamping component (9) comprises a holding part (91) and a cantilever part (92), the cantilever part (92) and the holding part (91) form a branched structure, the holding part (91) is connected with the temperature sensing bin (7), a clamping groove (93) is formed in the cantilever part (92), and the temperature sensor (4) is clamped in the clamping groove (93).
6. The temperature and voltage harvesting device on a power cell of claim 5, wherein: the temperature sensor (4) is an NTC thermistor.
7. The temperature and voltage harvesting device on a power cell of claim 6, wherein: the plate-shaped body is provided with a wire slot (8), and the voltage collecting wire (3) and the temperature collecting wire (5) are arranged in the wire slot (8) along the direction of the wire slot (8) and extend out of the plate-shaped body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000424.2U CN216488220U (en) | 2021-12-01 | 2021-12-01 | Last temperature and voltage acquisition device of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000424.2U CN216488220U (en) | 2021-12-01 | 2021-12-01 | Last temperature and voltage acquisition device of power battery |
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| Publication Number | Publication Date |
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| CN216488220U true CN216488220U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123000424.2U Active CN216488220U (en) | 2021-12-01 | 2021-12-01 | Last temperature and voltage acquisition device of power battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060625A1 (en) * | 2022-09-21 | 2024-03-28 | 中国第一汽车股份有限公司 | Battery temperature measurement system and temperature measurement control method therefor, and electric vehicle |
-
2021
- 2021-12-01 CN CN202123000424.2U patent/CN216488220U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060625A1 (en) * | 2022-09-21 | 2024-03-28 | 中国第一汽车股份有限公司 | Battery temperature measurement system and temperature measurement control method therefor, and electric vehicle |
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