Battery connecting cable

Abstract

The utility model discloses a battery connecting cable, which relates to the technical field of cables and comprises a conductor, a current measuring unit, an isolating layer, an insulating layer and a protective sleeve, the isolating layer is coated outside the conductor, the current measuring unit is arranged between the conductor and the isolating layer, the insulating layer is coated outside the isolating layer, and the protective sleeve is sleeved outside the insulating layer. The current measuring unit comprises an iron core and a magnetic sensor, when the current passing through the conductor is increased, the magnetic field of the iron core changes, and the magnetic sensor transmits a current increasing signal to the control system. The current measuring unit transmits a current increasing signal passing through the cable to the control system, and the battery connected with the current increasing cable is withdrawn.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a battery connection cable. Background Art

[0002] With the advent of the global energy revolution, the global proportion of the use of discontinuous energy is increasing. For example, photovoltaic and wind energy are discontinuous energy sources. Due to the discontinuity of solar and wind energy, the requirements for energy storage regulation are getting higher and higher. Cables used for battery connection can control the transmission of electric energy and signals. However, some existing cables still have certain problems during use.

[0003] The occurrence of fires in electrochemical energy storage systems is generally due to overcharging and over-discharging of batteries, resulting in abnormal temperature rise and thus causing fires. In the prior art, battery connection cables usually use ordinary cables. When the current passing through the cable increases, it causes imbalance between charge and discharge. Overcharged and over-discharged batteries do not withdraw from the energy storage system in time, which affects the balance of the energy storage system and also poses a great fire hazard.

[0004] Therefore, it is very necessary to develop a cable for an energy storage system that can cut off the passing current in time when the current increases, so that overcharged or over-discharged batteries can withdraw in time. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies in the prior art and propose a battery connection cable.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A battery connection cable includes a conductor, a current measurement unit, an isolation layer, an insulating layer, and a protective sheath. The conductor is coated with an isolation layer. A current measurement unit is arranged at the middle position between the conductor and the isolation layer. The isolation layer is coated with an insulating layer, and the insulating layer is coated with a protective sheath. The current measurement unit includes: an iron core and a magnetic sensor. When the current passing through the conductor increases, the magnetic field of the iron core changes, and the magnetic sensor transmits the current increase signal to the control system.

[0007] Further, the insulating layer is made of 125°C irradiated cross-linked elastomeric polyolefin flame retardant material.

[0008] Further, the protective sheath is made of halogen-free low-smoke flame retardant polyolefin.

[0009] Further, the magnetic sensor converts the received magnetic field change into a current change.

[0010] The utility model has the following beneficial effects:

[0011] In the present utility model, by providing a current measurement unit and a control system, the current measurement unit includes: an iron core and a magnetic sensor. When the current passing through a conductor increases, the magnetic field of the iron core changes, and the magnetic sensor converts the received magnetic field change into a current change, and then transmits the current increase signal to the control system. The control system withdraws the battery connected to the current-increasing cable from the power energy storage system, and the battery no longer performs charge and discharge. The overcharged or over-discharged battery is withdrawn in time to prevent damage to the balance of the energy storage system and avoid potential fire hazards at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the cable structure proposed by the present utility model;

[0013] Figure 2 is a schematic diagram of the cable appearance proposed by the present utility model;

[0014] Figure 3 is a schematic diagram of the current measurement unit structure of the present utility model;

[0015] Figure 4 is a control flow chart of the power energy storage system of the present utility model.

[0016] Legend:

[0017] 1 - Conductor, 2 - Current measurement unit, 21 - Iron core, 22 - Magnetic sensor, 3 - Isolation layer, 4 - Protective sleeve, 5 - Insulating layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Referring to Figures 1-3 , a battery connection cable provided by the present utility model includes a conductor 1, a current measurement unit 2, an isolation layer 3, an insulating layer 5, and a protective sleeve 4. The conductor 1 is coated with an isolation layer 3, and a current measurement unit 2 is provided at the middle position between the conductor 1 and the isolation layer 3. The isolation layer is coated with an insulating layer 5, and the insulating layer 5 is coated with a protective sleeve 4. The current measurement unit 2 includes: an iron core 21 and a magnetic sensor 22. When the current passing through the conductor 1 increases, the magnetic field of the iron core 21 changes, and the magnetic sensor 22 transmits the current increase signal to the control system.

[0020] Working principle: When the energy storage system is working properly, the charging and discharging voltages of the battery are the same. When the battery is overcharged or over-discharged, the current passing through the cable connected to the battery increases. As the current increases, the magnetic field of the iron core 21 of the current measurement unit 2 changes. The magnetic sensor 22 of the current measurement unit 2 is connected to the iron core. The magnetic sensor 22 receives the magnetic field change of the iron core 21, converts the received magnetic field change into a current change, and then transmits the current change signal to the receiver through the transmission device. The receiver displays the signal on the display. The display shows the cable with increased current. At the same time, the controller removes the battery connected to the cable with increased current from the energy storage system, effectively avoiding the impact of overcharged or over-discharged batteries on the balance of the energy storage system and also avoiding fires caused by overcharged or over-discharged batteries.

[0021] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

Claims

1. A battery connection cable, comprising a conductor (1), a current measurement unit (2), an isolation layer (3), an insulating layer (5), and a protective sheath (4). It is characterized in that: The conductor (1) is coated with an isolation layer (3), a current measurement unit (2) is arranged at the middle position between the conductor (1) and the isolation layer (3), the isolation layer is coated with an insulating layer (5), the insulating layer (5) is coated with a protective sheath (4), and the current measurement unit (2) includes: an iron core (21) and a magnetic sensor (22). When the current passing through the conductor (1) increases, the magnetic field of the iron core (21) changes, and the magnetic sensor (22) transmits the current increase signal to the control system.

2. A battery connection cable according to claim 1, It is characterized in that: The insulating layer (5) is made of a 125°C irradiated cross-linked elastomeric polyolefin flame retardant material.

3. A battery connection cable according to claim 1, It is characterized in that: The protective sheath (4) is made of a halogen-free low-smoke flame retardant polyolefin.

4. A battery connection cable according to claim 1, It is characterized in that: The magnetic sensor (22) converts the received magnetic field change into a current change.

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